- Recent Update : 14 Dec 2024
- LeetCode Algorithm site : https://leetcode.com/problemset/algorithms/
- Python 3 Solution
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| Number | Problem | Difficulty | Links |
|---|---|---|---|
| 1 | Two Sum | Easy | Problem, Solution |
| 2 | Add Two Numbers | Medium | Problem, Solution |
| 7 | Reverse Integer | Easy | Problem, Solution |
| 9 | Palindrome Number | Easy | Problem, Solution |
| 13 | Roman to Integer | Easy | Problem, Solution |
| 14 | Longest Common Prefix | Easy | Problem, Solution |
| 20 | Valid Parentheses | Easy | Problem, Solution |
| 21 | Merge Two Sorted Lists | Easy | Problem, Solution |
| 26 | Remove Duplicates from Sorted Array | Easy | Problem, Solution |
| 27 | Remove Element | Easy | Problem, Solution |
| 28 | Implement strStr() | Easy | Problem, Solution |
| 35 | Search Insert Position | Easy | Problem, Solution |
| 53 | Maximum Subarray | Easy | Problem, Solution |
| 58 | Length of Last Word | Easy | Problem, Solution |
| 66 | Plus One | Easy | Problem, Solution |
| 67 | Add Binary | Easy | Problem, Solution |
| 69 | Sqrt(x) | Easy | Problem, Solution |
| 70 | Climbing Stairs | Easy | Problem, Solution |
| 83 | Remove Duplicates from Sorted List | Easy | Problem, Solution |
| 88 | Merge Sorted Array | Easy | Problem, Solution |
| 94 | Binary Tree Inorder Traversal | Easy | Problem, Solution |
| 100 | Same Tree | Easy | Problem, Solution |
| 101 | Symmetric Tree | Easy | Problem, Solution |
| 104 | Maximum Depth of Binary Tree | Easy | Problem, Solution |
| 108 | Convert Sorted Array to Binary Search Tree | Easy | Problem, Solution |
| 110 | Balanced Binary Tree | Easy | Problem, Solution |
| 111 | Minimum Depth of Binary Tree | Easy | Problem, Solution |
| 112 | Path Sum | Easy | Problem, Solution |
| 118 | Pascal's Triangle | Easy | Problem, Solution |
| 119 | Pascal's Triangle II | Easy | Problem, Solution |
| 121 | Best Time to Buy and Sell Stock | Easy | Problem, Solution |
| 122 | Best Time to Buy and Sell Stock II | Easy | Problem, Solution |
| 125 | Valid Palindrome | Easy | Problem, Solution |
| 136 | Single Number | Easy | Problem, Solution |
| 141 | Linked List Cycle | Easy | Problem, Solution |
| 144 | Binary Tree Preorder Traversal | Easy | Problem, Solution |
| 145 | Binary Tree Postorder Traversal | Easy | Problem, Solution |
| 155 | Min Stack | Easy | Problem, Solution |
| 160 | Intersection of Two Linked Lists | Easy | Problem, Solution |
| 167 | Two Sum II - Input array is sorted | Easy | Problem, Solution |
| 168 | Excel Sheet Column Title | Easy | Problem, Solution |
| 169 | Majority Element | Easy | Problem, Solution |
| 171 | Excel Sheet Column Number | Easy | Problem, Solution |
| 172 | Factorial Trailing Zeroes | Easy | Problem, Solution |
| 190 | Reverse Bits | Easy | Problem, Solution |
| 191 | Number of 1 Bits | Easy | Problem, Solution |
| 202 | Happy Number | Easy | Problem, Solution |
| 203 | Remove Linked List Elements | Easy | Problem, Solution |
| 204 | Count Primes | Easy | Problem, Solution |
| 205 | Isomorphic Strings | Easy | Problem, Solution |
| 206 | Reverse Linked List | Easy | Problem, Solution |
| 217 | Contains Duplicate | Easy | Problem, Solution |
| 219 | Contains Duplicate II | Easy | Problem, Solution |
| 222 | Count Complete Tree Nodes | Easy | Problem, Solution |
| 225 | Implement Stack using Queues | Easy | Problem, Solution |
| 226 | Invert Binary Tree | Easy | Problem, Solution |
| 228 | Summary Ranges | Easy | Problem, Solution |
| 231 | Power of Two | Easy | Problem, Solution |
| 232 | Implement Queue using Stacks | Easy | Problem, Solution |
| 234 | Palindrome Linked List | Easy | Problem, Solution |
| 235 | Lowest Common Ancestor of a Binary Search Tree | Easy | Problem, Solution |
| 237 | Delete Node in a Linked List | Easy | Problem, Solution |
| 242 | Valid Anagram | Easy | Problem, Solution |
| 257 | Binary Tree Paths | Easy | Problem, Solution |
| 258 | Add Digits | Easy | Problem, Solution |
| 263 | Ugly Number | Easy | Problem, Solution |
| 268 | Missing Number | Easy | Problem, Solution |
| 278 | First Bad Version | Easy | Problem, Solution |
| 283 | Move Zeroes | Easy | Problem, Solution |
| 290 | Word Pattern | Easy | Problem, Solution |
| 292 | Nim Game | Easy | Problem, Solution |
| 303 | Range Sum Query - Immutable | Easy | Problem, Solution |
| 326 | Power of Three | Easy | Problem, Solution |
| 338 | Counting Bits | Easy | Problem, Solution |
| 342 | Power of Four | Easy | Problem, Solution |
| 344 | Reverse String | Easy | Problem, Solution |
| 345 | Reverse Vowels of a String | Easy | Problem, Solution |
| 349 | Intersection of Two Arrays | Easy | Problem, Solution |
| 350 | Intersection of Two Arrays II | Easy | Problem, Solution |
| 367 | Valid Perfect Square | Easy | Problem, Solution |
| 374 | Guess Number Higher or Lower | Easy | Problem, Solution |
| 383 | Ransom Note | Easy | Problem, Solution |
| 387 | First Unique Character in a String | Easy | Problem, Solution |
| 389 | Find the Difference | Easy | Problem, Solution |
| 392 | Is Subsequence | Easy | Problem, Solution |
| 401 | Binary Watch | Easy | Problem, Solution |
| 404 | Sum of Left Leaves | Easy | Problem, Solution |
| 405 | Convert a Number to Hexadecimal | Easy | Problem, Solution |
| 409 | Longest Palindrome | Easy | Problem, Solution |
| 412 | Fizz Buzz | Easy | Problem, Solution |
| 414 | Third Maximum Number | Easy | Problem, Solution |
| 415 | Add Strings | Easy | Problem, Solution |
| 434 | Number of Segments in a String | Easy | Problem, Solution |
| 441 | Arranging Coins | Easy | Problem, Solution |
| 448 | Find All Numbers Disappeared in an Array | Easy | Problem, Solution |
| 453 | Minimum Moves to Equal Array Elements | Easy | Problem, Solution |
| 455 | Assign Cookies | Easy | Problem, Solution |
| 459 | Repeated Substring Pattern | Easy | Problem, Solution |
| 461 | Hamming Distance | Easy | Problem, Solution |
| 463 | Island Perimeter | Easy | Problem, Solution |
| 476 | Number Complement | Easy | Problem, Solution |
| 482 | License Key Formatting | Easy | Problem, Solution |
| 485 | Max Consecutive Ones | Easy | Problem, Solution |
| 492 | Construct the Rectangle | Easy | Problem, Solution |
| 495 | Teemo Attacking | Easy | Problem, Solution |
| 496 | Next Greater Element I | Easy | Problem, Solution |
| 500 | Keyboard Row | Easy | Problem, Solution |
| 501 | Find Mode in Binary Search Tree | Easy | Problem, Solution |
| 504 | Base 7 | Easy | Problem, Solution |
| 506 | Relative Ranks | Easy | Problem, Solution |
| 507 | Perfect Number | Easy | Problem, Solution |
| 509 | Fibonacci Number | Easy | Problem, Solution |
| 520 | Detect Capital | Easy | Problem, Solution |
| 521 | Longest Uncommon Subsequence I | Easy | Problem, Solution |
| 530 | Minimum Absolute Difference in BST | Easy | Problem, Solution |
| 541 | Reverse String II | Easy | Problem, Solution |
| 543 | Diameter of Binary Tree | Easy | Problem, Solution |
| 551 | Student Attendance Record I | Easy | Problem, Solution |
| 557 | Reverse Words in a String III | Easy | Problem, Solution |
| 559 | Maximum Depth of N-ary Tree | Easy | Problem, Solution |
| 561 | Array Partition I | Easy | Problem, Solution |
| 563 | Binary Tree Tilt | Easy | Problem, Solution |
| 566 | Reshape the Matrix | Easy | Problem, Solution |
| 572 | Subtree of Another Tree | Easy | Problem, Solution |
| 575 | Distribute Candies | Easy | Problem, Solution |
| 589 | N-ary Tree Preorder Traversal | Easy | Problem, Solution |
| 590 | N-ary Tree Postorder Traversal | Easy | Problem, Solution |
| 594 | Longest Harmonious Subsequence | Easy | Problem, Solution |
| 598 | Range Addition II | Easy | Problem, Solution |
| 599 | Minimum Index Sum of Two Lists | Easy | Problem, Solution |
| 605 | Can Place Flowers | Easy | Problem, Solution |
| 606 | Construct String from Binary Tree | Easy | Problem, Solution |
| 617 | Merge Two Binary Trees | Easy | Problem, Solution |
| 628 | Maximum Product of Three Numbers | Easy | Problem, Solution |
| 637 | Average of Levels in Binary Tree | Easy | Problem, Solution |
| 643 | Maximum Average Subarray I | Easy | Problem, Solution |
| 645 | Set Mismatch | Easy | Problem, Solution |
| 653 | Two Sum IV - Input is a BST | Easy | Problem, Solution |
| 657 | Robot Return to Origin | Easy | Problem, Solution |
| 661 | Image Smoother | Easy | Problem, Solution |
| 671 | Second Minimum Node In a Binary Tree | Easy | Problem, Solution |
| 674 | Longest Continuous Increasing Subsequence | Easy | Problem, Solution |
| 680 | Valid Palindrome II | Easy | Problem, Solution |
| 682 | Baseball Game | Easy | Problem, Solution |
| 693 | Binary Number with Alternating Bits | Easy | Problem, Solution |
| 696 | Count Binary Substrings | Easy | Problem, Solution |
| 697 | Degree of an Array | Easy | Problem, Solution |
| 700 | Search in a Binary Search Tree | Easy | Problem, Solution |
| 703 | Kth Largest Element in a Stream | Easy | Problem, Solution |
| 704 | Binary Search | Easy | Problem, Solution |
| 705 | Design HashSet | Easy | Problem, Solution |
| 706 | Design HashMap | Easy | Problem, Solution |
| 709 | To Lower Case | Easy | Problem, Solution |
| 717 | 1-bit and 2-bit Characters | Easy | Problem, Solution |
| 724 | Find Pivot Index | Easy | Problem, Solution |
| 728 | Self Dividing Numbers | Easy | Problem, Solution |
| 733 | Flood Fill | Easy | Problem, Solution |
| 744 | Find Smallest Letter Greater Than Target | Easy | Problem, Solution |
| 746 | Min Cost Climbing Stairs | Easy | Problem, Solution |
| 747 | Largest Number At Least Twice of Others | Easy | Problem, Solution |
| 748 | Shortest Completing Word | Easy | Problem, Solution |
| 762 | Prime Number of Set Bits in Binary Representation | Easy | Problem, Solution |
| 766 | Toeplitz Matrix | Easy | Problem, Solution |
| 771 | Jewels and Stones | Easy | Problem, Solution |
| 783 | Minimum Distance Between BST Nodes | Easy | Problem, Solution |
| 796 | Rotate String | Easy | Problem, Solution |
| 804 | Unique Morse Code Words | Easy | Problem, Solution |
| 806 | Number of Lines To Write String | Easy | Problem, Solution |
| 812 | Largest Triangle Area | Easy | Problem, Solution |
| 819 | Most Common Word | Easy | Problem, Solution |
| 821 | Shortest Distance to a Character | Easy | Problem, Solution |
| 824 | Goat Latin | Easy | Problem, Solution |
| 830 | Positions of Large Groups | Easy | Problem, Solution |
| 832 | Flipping an Image | Easy | Problem, Solution |
| 836 | Rectangle Overlap | Easy | Problem, Solution |
| 844 | Backspace String Compare | Easy | Problem, Solution |
| 852 | Peak Index in a Mountain Array | Easy | Problem, Solution |
| 859 | Buddy Strings | Easy | Problem, Solution |
| 860 | Lemonade Change | Easy | Problem, Solution |
| 867 | Transpose Matrix | Easy | Problem, Solution |
| 868 | Binary Gap | Easy | Problem, Solution |
| 872 | Leaf-Similar Trees | Easy | Problem, Solution |
| 876 | Middle of the Linked List | Easy | Problem, Solution |
| 883 | Projection Area of 3D Shapes | Easy | Problem, Solution |
| 884 | Uncommon Words from Two Sentences | Easy | Problem, Solution |
| 888 | Fair Candy Swap | Easy | Problem, Solution |
| 892 | Surface Area of 3D Shapes | Easy | Problem, Solution |
| 896 | Monotonic Array | Easy | Problem, Solution |
| 897 | Increasing Order Search Tree | Easy | Problem, Solution |
| 905 | Sort Array By Parity | Easy | Problem, Solution |
| 908 | Smallest Range I | Easy | Problem, Solution |
| 914 | X of a Kind in a Deck of Cards | Easy | Problem, Solution |
| 917 | Reverse Only Letters | Easy | Problem, Solution |
| 922 | Sort Array By Parity II | Easy | Problem, Solution |
| 925 | Long Pressed Name | Easy | Problem, Solution |
| 929 | Unique Email Addresses | Easy | Problem, Solution |
| 933 | Number of Recent Calls | Easy | Problem, Solution |
| 937 | Reorder Data in Log Files | Easy | Problem, Solution |
| 938 | Range Sum of BST | Easy | Problem, Solution |
| 941 | Valid Mountain Array | Easy | Problem, Solution |
| 942 | DI String Match | Easy | Problem, Solution |
| 944 | Delete Columns to Make Sorted | Easy | Problem, Solution |
| 953 | Verifying an Alien Dictionary | Easy | Problem, Solution |
| 961 | N-Repeated Element in Size 2N Array | Easy | Problem, Solution |
| 965 | Univalued Binary Tree | Easy | Problem, Solution |
| 976 | Largest Perimeter Triangle | Easy | Problem, Solution |
| 977 | Squares of a Sorted Array | Easy | Problem, Solution |
| 989 | Add to Array-Form of Integer | Easy | Problem, Solution |
| 993 | Cousins in Binary Tree | Easy | Problem, Solution |
| 997 | Find the Town Judge | Easy | Problem, Solution |
| 999 | Available Captures for Rook | Easy | Problem, Solution |
| 1002 | Find Common Characters | Easy | Problem, Solution |
| 1005 | Maximize Sum Of Array After K Negations | Easy | Problem, Solution |
| 1009 | Complement of Base 10 Integer | Easy | Problem, Solution |
| 1013 | Partition Array Into Three Parts With Equal Sum | Easy | Problem, Solution |
| 1018 | Binary Prefix Divisible By 5 | Easy | Problem, Solution |
| 1021 | Remove Outermost Parentheses | Easy | Problem, Solution |
| 1022 | Sum of Root To Leaf Binary Numbers | Easy | Problem, Solution |
| 1025 | Divisor Game | Easy | Problem, Solution |
| 1030 | Matrix Cells in Distance Order | Easy | Problem, Solution |
| 1037 | Valid Boomerang | Easy | Problem, Solution |
| 1046 | Last Stone Weight | Easy | Problem, Solution |
| 1047 | Remove All Adjacent Duplicates In String | Easy | Problem, Solution |
| 1051 | Height Checker | Easy | Problem, Solution |
| 1071 | Greatest Common Divisor of Strings | Easy | Problem, Solution |
| 1078 | Occurrences After Bigram | Easy | Problem, Solution |
| 1089 | Duplicate Zeros | Easy | Problem, Solution |
| 1103 | Distribute Candies to People | Easy | Problem, Solution |
| 1108 | Defanging an IP Address | Easy | Problem, Solution |
| 1122 | Relative Sort Array | Easy | Problem, Solution |
| 1128 | Number of Equivalent Domino Pairs | Easy | Problem, Solution |
| 1137 | N-th Tribonacci Number | Easy | Problem, Solution |
| 1154 | Day of the Year | Easy | Problem, Solution |
| 1160 | Find Words That Can Be Formed by Characters | Easy | Problem, Solution |
| 1175 | Prime Arrangements | Easy | Problem, Solution |
| 1184 | Distance Between Bus Stops | Easy | Problem, Solution |
| 1185 | Day of the Week | Easy | Problem, Solution |
| 1189 | Maximum Number of Balloons | Easy | Problem, Solution |
| 1200 | Minimum Absolute Difference | Easy | Problem, Solution |
| 1207 | Unique Number of Occurrences | Easy | Problem, Solution |
| 1217 | Minimum Cost to Move Chips to The Same Position | Easy | Problem, Solution |
| 1221 | Split a String in Balanced Strings | Easy | Problem, Solution |
| 1232 | Check If It Is a Straight Line | Easy | Problem, Solution |
| 1252 | Cells with Odd Values in a Matrix | Easy | Problem, Solution |
| 1260 | Shift 2D Grid | Easy | Problem, Solution |
| 1266 | Minimum Time Visiting All Points | Easy | Problem, Solution |
| 1275 | Find Winner on a Tic Tac Toe Game | Easy | Problem, Solution |
| 1281 | Subtract the Product and Sum of Digits of an Integer | Easy | Problem, Solution |
| 1287 | Element Appearing More Than 25% In Sorted Array | Easy | Problem, Solution |
| 1290 | Convert Binary Number in a Linked List to Integer | Easy | Problem, Solution |
| 1295 | Find Numbers with Even Number of Digits | Easy | Problem, Solution |
| 1299 | Replace Elements with Greatest Element on Right Side | Easy | Problem, Solution |
| 1304 | Find N Unique Integers Sum up to Zero | Easy | Problem, Solution |
| 1309 | Decrypt String from Alphabet to Integer Mapping | Easy | Problem, Solution |
| 1313 | Decompress Run-Length Encoded List | Easy | Problem, Solution |
| 1317 | Convert Integer to the Sum of Two No-Zero Integers | Easy | Problem, Solution |
| 1323 | Maximum 69 Number | Easy | Problem, Solution |
| 1331 | Rank Transform of an Array | Easy | Problem, Solution |
| 1332 | Remove Palindromic Subsequences | Easy | Problem, Solution |
| 1337 | The K Weakest Rows in a Matrix | Easy | Problem, Solution |
| 1342 | Number of Steps to Reduce a Number to Zero | Easy | Problem, Solution |
| 1346 | Check If N and Its Double Exist | Easy | Problem, Solution |
| 1351 | Count Negative Numbers in a Sorted Matrix | Easy | Problem, Solution |
| 1360 | Number of Days Between Two Dates | Easy | Problem, Solution |
| 1365 | How Many Numbers Are Smaller Than the Current Number | Easy | Problem, Solution |
| 1370 | Increasing Decreasing String | Easy | Problem, Solution |
| 1374 | Generate a String With Characters That Have Odd Counts | Easy | Problem, Solution |
| 1379 | Find a Corresponding Node of a Binary Tree in a Clone of That Tree | Easy | Problem, Solution |
| 1380 | Lucky Numbers in a Matrix | Easy | Problem, Solution |
| 1385 | Find the Distance Value Between Two Arrays | Easy | Problem, Solution |
| 1389 | Create Target Array in the Given Order | Easy | Problem, Solution |
| 1394 | Find Lucky Integer in an Array | Easy | Problem, Solution |
| 1399 | Count Largest Group | Easy | Problem, Solution |
| 1403 | Minimum Subsequence in Non-Increasing Order | Easy | Problem, Solution |
| 1408 | String Matching in an Array | Easy | Problem, Solution |
| 1413 | Minimum Value to Get Positive Step by Step Sum | Easy | Problem, Solution |
| 1417 | Reformat The String | Easy | Problem, Solution |
| 1422 | Maximum Score After Splitting a String | Easy | Problem, Solution |
| 1431 | Kids With the Greatest Number of Candies | Easy | Problem, Solution |
| 1436 | Destination City | Easy | Problem, Solution |
| 1437 | Check If All 1's Are at Least Length K Places Away | Easy | Problem, Solution |
| 1446 | Consecutive Characters | Easy | Problem, Solution |
| 1450 | Number of Students Doing Homework at a Given Time | Easy | Problem, Solution |
| 1455 | Check If a Word Occurs As a Prefix of Any Word in a Sentence | Easy | Problem, Solution |
| 1460 | Make Two Arrays Equal by Reversing Subarrays | Easy | Problem, Solution |
| 1464 | Maximum Product of Two Elements in an Array | Easy | Problem, Solution |
| 1470 | Shuffle the Array | Easy | Problem, Solution |
| 1475 | Final Prices With a Special Discount in a Shop | Easy | Problem, Solution |
| 1480 | Running Sum of 1d Array | Easy | Problem, Solution |
| 1486 | XOR Operation in an Array | Easy | Problem, Solution |
| 1491 | Average Salary Excluding the Minimum and Maximum Salary | Easy | Problem, Solution |
| 1496 | Path Crossing | Easy | Problem, Solution |
| 1502 | Can Make Arithmetic Progression From Sequence | Easy | Problem, Solution |
| 1507 | Reformat Date | Easy | Problem, Solution |
| 1512 | Number of Good Pairs | Easy | Problem, Solution |
| 1518 | Water Bottles | Easy | Problem, Solution |
| 1523 | Count Odd Numbers in an Interval Range | Easy | Problem, Solution |
| 1528 | Shuffle String | Easy | Problem, Solution |
| 1534 | Count Good Triplets | Easy | Problem, Solution |
| 1539 | Kth Missing Positive Number | Easy | Problem, Solution |
| 1544 | Make The String Great | Easy | Problem, Solution |
| 1550 | Three Consecutive Odds | Easy | Problem, Solution |
| 1556 | Thousand Separator | Easy | Problem, Solution |
| 1560 | Most Visited Sector in a Circular Track | Easy | Problem, Solution |
| 1566 | Detect Pattern of Length M Repeated K or More Times | Easy | Problem, Solution |
| 1572 | Matrix Diagonal Sum | Easy | Problem, Solution |
| 1576 | Replace All ?'s to Avoid Consecutive Repeating Characters | Easy | Problem, Solution |
| 1582 | Special Positions in a Binary Matrix | Easy | Problem, Solution |
| 1588 | Sum of All Odd Length Subarrays | Easy | Problem, Solution |
| 1592 | Rearrange Spaces Between Words | Easy | Problem, Solution |
| 1598 | Crawler Log Folder | Easy | Problem, Solution |
| 1603 | Design Parking System | Easy | Problem, Solution |
| 1608 | Special Array With X Elements Greater Than or Equal X | Easy | Problem, Solution |
| 1614 | Maximum Nesting Depth of the Parentheses | Easy | Problem, Solution |
| 1619 | Mean of Array After Removing Some Elements | Easy | Problem, Solution |
| 1624 | Largest Substring Between Two Equal Characters | Easy | Problem, Solution |
| 1629 | Slowest Key | Easy | Problem, Solution |
| 1636 | Sort Array by Increasing Frequency | Easy | Problem, Solution |
| 1637 | Widest Vertical Area Between Two Points Containing No Points | Easy | Problem, Solution |
| 1640 | Check Array Formation Through Concatenation | Easy | Problem, Solution |
| 1646 | Get Maximum in Generated Array | Easy | Problem, Solution |
| 1652 | Defuse the Bomb | Easy | Problem, Solution |
| 1656 | Design an Ordered Stream | Easy | Problem, Solution |
| 1662 | Check If Two String Arrays are Equivalent | Easy | Problem, Solution |
| 1668 | Maximum Repeating Substring | Easy | Problem, Solution |
| 1672 | Richest Customer Wealth | Easy | Problem, Solution |
| 1678 | Goal Parser Interpretation | Easy | Problem, Solution |
| 1684 | Count the Number of Consistent Strings | Easy | Problem, Solution |
| 1688 | Count of Matches in Tournament | Easy | Problem, Solution |
| 1694 | Reformat Phone Number | Easy | Problem, Solution |
| 1700 | Number of Students Unable to Eat Lunch | Easy | Problem, Solution |
| 1704 | Determine if String Halves Are Alike | Easy | Problem, Solution |
| 1710 | Maximum Units on a Truck | Easy | Problem, Solution |
| 1716 | Calculate Money in Leetcode Bank | Easy | Problem, Solution |
| 1720 | Decode XORed Array | Easy | Problem, Solution |
| 1725 | Number Of Rectangles That Can Form The Largest Square | Easy | Problem, Solution |
| 1732 | Find the Highest Altitude | Easy | Problem, Solution |
| 1736 | Latest Time by Replacing Hidden Digits | Easy | Problem, Solution |
| 1742 | Maximum Number of Balls in a Box | Easy | Problem, Solution |
| 1748 | Sum of Unique Elements | Easy | Problem, Solution |
| 1752 | Check if Array Is Sorted and Rotated | Easy | Problem, Solution |
| 1758 | Minimum Changes To Make Alternating Binary String | Easy | Problem, Solution |
| 1763 | Longest Nice Substring | Easy | Problem, Solution |
| 1768 | Merge Strings Alternately | Easy | Problem, Solution |
| 1773 | Count Items Matching a Rule | Easy | Problem, Solution |
| 1779 | Find Nearest Point That Has the Same X or Y Coordinate | Easy | Problem, Solution |
| 1784 | Check if Binary String Has at Most One Segment of Ones | Easy | Problem, Solution |
| 1790 | Check if One String Swap Can Make Strings Equal | Easy | Problem, Solution |
| 1791 | Find Center of Star Graph | Easy | Problem, Solution |
| 1796 | Second Largest Digit in a String | Easy | Problem, Solution |
| 1800 | Maximum Ascending Subarray Sum | Easy | Problem, Solution |
| 1805 | Number of Different Integers in a String | Easy | Problem, Solution |
| 1812 | Determine Color of a Chessboard Square | Easy | Problem, Solution |
| 1816 | Truncate Sentence | Easy | Problem, Solution |
| 1822 | Sign of the Product of an Array | Easy | Problem, Solution |
| 1827 | Minimum Operations to Make the Array Increasing | Easy | Problem, Solution |
| 1832 | Check if the Sentence Is Pangram | Easy | Problem, Solution |
| 1837 | Sum of Digits in Base K | Easy | Problem, Solution |
| 1844 | Replace All Digits with Characters | Easy | Problem, Solution |
| 1848 | Minimum Distance to the Target Element | Easy | Problem, Solution |
| 1854 | Maximum Population Year | Easy | Problem, Solution |
| 1859 | Sorting the Sentence | Easy | Problem, Solution |
| 1863 | Sum of All Subset XOR Totals | Easy | Problem, Solution |
| 1869 | Longer Contiguous Segments of Ones than Zeros | Easy | Problem, Solution |
| 1876 | Substrings of Size Three with Distinct Characters | Easy | Problem, Solution |
| 1880 | Check if Word Equals Summation of Two Words | Easy | Problem, Solution |
| 1886 | Determine Whether Matrix Can Be Obtained By Rotation | Easy | Problem, Solution |
| 1893 | Check if All the Integers in a Range Are Covered | Easy | Problem, Solution |
| 1897 | Redistribute Characters to Make All Strings Equal | Easy | Problem, Solution |
| 1903 | Largest Odd Number in String | Easy | Problem, Solution |
| 1909 | Remove One Element to Make the Array Strictly Increasing | Easy | Problem, Solution |
| 1913 | Maximum Product Difference Between Two Pairs | Easy | Problem, Solution |
| 1920 | Build Array from Permutation | Easy | Problem, Solution |
| 1925 | Count Square Sum Triples | Easy | Problem, Solution |
| 1929 | Concatenation of Array | Easy | Problem, Solution |
| 1935 | Maximum Number of Words You Can Type | Easy | Problem, Solution |
| 1941 | Check if All Characters Have Equal Number of Occurrences | Easy | Problem, Solution |
| 1945 | Sum of Digits of String After Convert | Easy | Problem, Solution |
| 1952 | Three Divisors | Easy | Problem, Solution |
| 1957 | Delete Characters to Make Fancy String | Easy | Problem, Solution |
| 1961 | Check If String Is a Prefix of Array | Easy | Problem, Solution |
| 1967 | Number of Strings That Appear as Substrings in Word | Easy | Problem, Solution |
| 1971 | Find if Path Exists in Graph | Easy | Problem, Solution |
| 1974 | Minimum Time to Type Word Using Special Typewriter | Easy | Problem, Solution |
| 1979 | Find Greatest Common Divisor of Array | Easy | Problem, Solution |
| 1984 | Minimum Difference Between Highest and Lowest of K Scores | Easy | Problem, Solution |
| 1991 | Find the Middle Index in Array | Easy | Problem, Solution |
| 1995 | Count Special Quadruplets | Easy | Problem, Solution |
| 2000 | Reverse Prefix of Word | Easy | Problem, Solution |
| 2006 | Count Number of Pairs With Absolute Difference K | Easy | Problem, Solution |
| 2011 | Final Value of Variable After Performing Operations | Easy | Problem, Solution |
| 2016 | Maximum Difference Between Increasing Elements | Easy | Problem, Solution |
| 2022 | Convert 1D Array Into 2D Array | Easy | Problem, Solution |
| 2027 | Minimum Moves to Convert String | Easy | Problem, Solution |
| 2032 | Two Out of Three | Easy | Problem, Solution |
| 2037 | Minimum Number of Moves to Seat Everyone | Easy | Problem, Solution |
| 2042 | Check if Numbers Are Ascending in a Sentence | Easy | Problem, Solution |
| 2047 | Number of Valid Words in a Sentence | Easy | Problem, Solution |
| 2053 | Kth Distinct String in an Array | Easy | Problem, Solution |
| 2057 | Smallest Index With Equal Value | Easy | Problem, Solution |
| 2062 | Count Vowel Substrings of a String | Easy | Problem, Solution |
| 2068 | Check Whether Two Strings are Almost Equivalent | Easy | Problem, Solution |
| 2073 | Time Needed to Buy Tickets | Easy | Problem, Solution |
| 2078 | Two Furthest Houses With Different Colors | Easy | Problem, Solution |
| 2085 | Count Common Words With One Occurrence | Easy | Problem, Solution |
| 2089 | Find Target Indices After Sorting Array | Easy | Problem, Solution |
| 2094 | Finding 3-Digit Even Numbers | Easy | Problem, Solution |
| 2099 | Find Subsequence of Length K With the Largest Sum | Easy | Problem, Solution |
| 2103 | Rings and Rods | Easy | Problem, Solution |
| 2108 | Find First Palindromic String in the Array | Easy | Problem, Solution |
| 2114 | Maximum Number of Words Found in Sentences | Easy | Problem, Solution |
| 2119 | A Number After a Double Reversal | Easy | Problem, Solution |
| 2124 | Check if All A's Appears Before All B's | Easy | Problem, Solution |
| 2129 | Capitalize the Title | Easy | Problem, Solution |
| 2133 | Check if Every Row and Column Contains All Numbers | Easy | Problem, Solution |
| 2138 | Divide a String Into Groups of Size k | Easy | Problem, Solution |
| 2144 | Minimum Cost of Buying Candies With Discount | Easy | Problem, Solution |
| 2148 | Count Elements With Strictly Smaller and Greater Elements | Easy | Problem, Solution |
| 2154 | Keep Multiplying Found Values by Two | Easy | Problem, Solution |
| 2160 | Minimum Sum of Four Digit Number After Splitting Digits | Easy | Problem, Solution |
| 2164 | Sort Even and Odd Indices Independently | Easy | Problem, Solution |
| 2169 | Count Operations to Obtain Zero | Easy | Problem, Solution |
| 2176 | Count Equal and Divisible Pairs in an Array | Easy | Problem, Solution |
| 2180 | Count Integers With Even Digit Sum | Easy | Problem, Solution |
| 2185 | Counting Words With a Given Prefix | Easy | Problem, Solution |
| 2190 | Most Frequent Number Following Key In an Array | Easy | Problem, Solution |
| 2194 | Cells in a Range on an Excel Sheet | Easy | Problem, Solution |
| 2200 | Find All K-Distant Indices in an Array | Easy | Problem, Solution |
| 2206 | Divide Array Into Equal Pairs | Easy | Problem, Solution |
| 2210 | Count Hills and Valleys in an Array | Easy | Problem, Solution |
| 2215 | Find the Difference of Two Arrays | Easy | Problem, Solution |
| 2220 | Minimum Bit Flips to Convert Number | Easy | Problem, Solution |
| 2224 | Minimum Number of Operations to Convert Time | Easy | Problem, Solution |
| 2231 | Largest Number After Digit Swaps by Parity | Easy | Problem, Solution |
| 2235 | Add Two Integers | Easy | Problem, Solution |
| 2236 | Root Equals Sum of Children | Easy | Problem, Solution |
| 2239 | Find Closest Number to Zero | Easy | Problem, Solution |
| 2243 | Calculate Digit Sum of a String | Easy | Problem, Solution |
| 2248 | Intersection of Multiple Arrays | Easy | Problem, Solution |
| 2255 | Count Prefixes of a Given String | Easy | Problem, Solution |
| 2259 | Remove Digit From Number to Maximize Result | Easy | Problem, Solution |
| 2264 | Largest 3-Same-Digit Number in String | Easy | Problem, Solution |
| 2269 | Find the K-Beauty of a Number | Easy | Problem, Solution |
| 2273 | Find Resultant Array After Removing Anagrams | Easy | Problem, Solution |
| 2278 | Percentage of Letter in String | Easy | Problem, Solution |
| 2283 | Check if Number Has Equal Digit Count and Digit Value | Easy | Problem, Solution |
| 2287 | Rearrange Characters to Make Target String | Easy | Problem, Solution |
| 2293 | Min Max Game | Easy | Problem, Solution |
| 2299 | Strong Password Checker II | Easy | Problem, Solution |
| 2303 | Calculate Amount Paid in Taxes | Easy | Problem, Solution |
| 2309 | Greatest English Letter in Upper and Lower Case | Easy | Problem, Solution |
| 2315 | Count Asterisks | Easy | Problem, Solution |
| 2319 | Check if Matrix Is X-Matrix | Easy | Problem, Solution |
| 2325 | Decode the Message | Easy | Problem, Solution |
| 2331 | Evaluate Boolean Binary Tree | Easy | Problem, Solution |
| 2335 | Minimum Amount of Time to Fill Cups | Easy | Problem, Solution |
| 2341 | Maximum Number of Pairs in Array | Easy | Problem, Solution |
| 2347 | Best Poker Hand | Easy | Problem, Solution |
| 2351 | First Letter to Appear Twice | Easy | Problem, Solution |
| 2357 | Make Array Zero by Subtracting Equal Amounts | Easy | Problem, Solution |
| 2363 | Merge Similar Items | Easy | Problem, Solution |
| 2367 | Number of Arithmetic Triplets | Easy | Problem, Solution |
| 2373 | Largest Local Values in a Matrix | Easy | Problem, Solution |
| 2379 | Minimum Recolors to Get K Consecutive Black Blocks | Easy | Problem, Solution |
| 2383 | Minimum Hours of Training to Win a Competition | Easy | Problem, Solution |
| 2389 | Longest Subsequence With Limited Sum | Easy | Problem, Solution |
| 2395 | Find Subarrays With Equal Sum | Easy | Problem, Solution |
| 2399 | Check Distances Between Same Letters | Easy | Problem, Solution |
| 2404 | Most Frequent Even Element | Easy | Problem, Solution |
| 2409 | Count Days Spent Together | Easy | Problem, Solution |