added more pattern programs

Author: thatsabhishek

README.md

@@ -40,6 +40,12 @@ In case, the list becomes too big in the future you can use `cmd + f` or `ctrl +
     - [Alpha Pattern 1](./patterns/triangularpattern/alphapattern1.py)
     - [Alpha Pattern 2](./patterns/triangularpattern/alphapattern2.py)
     - [Alpha Pattern 3](./patterns/triangularpattern/alphapattern3.py)
+  - [Mixed Pattern](./patterns/mixedpattern/)
+    - [Arrow Pattern](./patterns/mixedpattern/arrowpattern.py)
+    - [Print Number Pyramid](./patterns/mixedpattern/printnumberpyramid.py)
+    - [Pyramid Number Pattern](./patterns/mixedpattern/pyramidnumberpattern.py)
+    - [Rectangular Numbers](./patterns/mixedpattern/rectangularnumbers.py)
+    - [Zeros and Stars Pattern](./patterns/mixedpattern/zerosandstarspattern.py)
 - [Searching](./searching)
   - [Binary Search](./searching/binarysearch.py)
   - [Linear Search](./searching/linearsearch.py)

patterns/mixedpattern/arrowpattern.py

@@ -0,0 +1,40 @@
+# Print the following pattern for the given number of rows.
+# Assume N is always odd.
+# Note : There is space after every star.
+# Pattern for N = 7
+# *
+#  * *
+#    * * *
+#      * * * *
+#    * * *
+#  * *
+# *
+
+n = int(input("Enter the number of rows:"))
+i = 1
+inc = int(n/2) + 1
+while i <= inc:
+    sp = 1
+    while sp < i:
+        print(' ', end='')
+        sp = sp+1
+    j = 1
+    while j <= i:
+        print('* ', end='')
+        j = j+1 
+    print()
+    i = i+1
+i = 1
+dec = n-inc
+while i <= n-inc:
+    sp = 1
+    while sp < dec:
+        print(' ', end='')
+        sp = sp+1
+    j = 1
+    while j <= dec:
+        print('* ', end='')
+        j = j+1
+    print()
+    i = i+1
+    dec = dec-1

patterns/mixedpattern/printnumberpyramid.py

@@ -0,0 +1,40 @@
+# Print the following pattern for a given n.
+# For eg. N = 6
+
+# 123456
+#  23456
+#   3456
+#    456
+#     56
+#      6
+#     56
+#    456
+#   3456
+#  23456
+# 123456
+
+n = int(input("Enter the number of rows:"))
+i = 1
+a = 1
+while i <= n:
+    sp = 1
+    while sp < i:
+        print(' ', end='')
+        sp = sp+1
+    for j in range(a, n+1):
+        print(j, end='')
+    print()
+    a = a+1
+    i = i+1
+i = 1
+a = n-1
+while i <= n-1:
+    sp = 1
+    while sp <= n-i-1:
+        print(' ', end='')
+        sp = sp+1
+    for j in range(a, n+1):
+        print(j, end='')
+    print()
+    i = i+1
+    a = a-1

patterns/mixedpattern/pyramidnumberpattern.py

@@ -0,0 +1,24 @@
+# Print the following pattern for the given number of rows.
+# Pattern for N = 4
+#    1
+#   212
+#  32123
+# 4321234
+
+n = int(input())
+i = 1
+while i <= n:
+    sp = 1
+    while sp <= n-i:
+        print(' ', end='')
+        sp = sp+1
+    j = i
+    while j >= 1:
+        print(j, end='')
+        j = j-1
+    k = 2
+    while k <= i:
+        print(k, end='')
+        k = k+1
+    print()
+    i = i+1

patterns/mixedpattern/rectangularnumbers.py

@@ -0,0 +1,34 @@
+# Print the following pattern for the given number of rows.
+# Pattern for N = 4
+# 4444444
+# 4333334
+# 4322234
+# 4321234
+# 4322234
+# 4333334  
+# 4444444
+
+n = int(input())
+for i in range(1, n+1):
+    temp = n
+    for j in range(1,i):
+        print(temp, end='')
+        temp -= 1
+    for j in range(1, 2*(n-i)+2):
+        print(n-i+1, end='')
+    for j in range(1,i):
+        temp += 1
+        print(temp, end='')
+    print()
+
+for i in range(n-1, 0, -1):
+    temp = n
+    for j in range(1,i):
+        print(temp, end = '')
+        temp-=1
+    for j in range(1, 2*(n-i)+2):
+        print(n-i+1, end='')
+    for j in range(1,i):
+        temp+=1
+        print(temp, end='')
+    print()

patterns/mixedpattern/zerosandstarspattern.py

@@ -0,0 +1,21 @@
+# Print the following pattern
+# Pattern for N = 4
+# *000*000*
+# 0*00*00*0
+# 00*0*0*00
+# 000***000
+
+n = int(input("Enter the number of rows:"))
+i = 1
+a = 2*n+1
+while i <= n:
+    j = 1
+    while j <= 2*n+1:
+        if i == j or j == n+1 or j == a:
+            print("*", end='')
+        else:
+            print('0', end='')
+        j = j+1
+    print()
+    i = i+1
+    a = a-1