Add code file for calculating the square of input number without multiplication operations.

Author: rishiraj88

Python101/squareOfNumberWithoutMultiplication.py

@@ -0,0 +1,8 @@
+# Python code​​​​​​‌​‌​‌‌‌‌‌​‌‌​‌‌​‌‌​​‌​​‌​ below
+def triangle(num):
+    if num == 1:
+        return num
+    return num + triangle(num - 1)
+
+def square(num):
+    return triangle(num)+triangle(num)-num