practiceWithArrays

pragma solidity ^0.8.0;

// Define a new contract
contract practiceWithArrays {
    
    // Declare public arrays of unsigned integers
    uint[] public myArray;
    uint[] public myArray2;
    // Declare a public array of unsigned integers with a fixed length of 200
    uint[200] public myFixedLengthArray;

    // Define a function to add a number to the end of myArray
    function push(uint number) public {
        myArray.push(number);
    }

    // Define a function to remove the last element from myArray
    function pop() public {
        myArray.pop();
    }

    // Define a function to get the length of myArray
    function getLength() public view returns (uint) {
        return myArray.length;
    }

    // Define a function to remove an element from myArray at a specific index
    function remove(uint i) public {
        delete myArray [i];
    }

    // Declare another public array of unsigned integers
    uint[] public changeArray;

    // Define a function to remove an element from changeArray at a specific index
    // This function replaces the element to be removed with the last element in the array, then removes the last element
    function removeElement(uint i) public {
        changeArray[i] = changeArray[changeArray.length - 1];
        changeArray.pop();
    }

    // Define a function to add the numbers 1 through 4 to changeArray
    function test() public {
        for(uint i = 1; i <=4; i++) {
            changeArray.push(i);
        }
    }

    // Define a function to get all elements in changeArray
    function getChangeArray() public view returns(uint[] memory) {
        return changeArray;
    }
}