Adds array left_rotation challenge

InterviewPreparationKit/arrays/left_rotation.py

@@ -0,0 +1,24 @@
+#!/bin/python3
+
+def rot_left(a, d):
+ for i in range(len(a) - 1):
+ if i < d:
+ a.append(a[0])
+ a.pop(0)
+ return a
+
+if __name__ == '__main__':
+ # 5 4
+ # 1 2 3 4 5
+ nd = [5, 4]
+ n = int(nd[0])
+ d = int(nd[1])
+ a = [1, 2, 3, 4, 5]
+
+ print(rot_left(a, d))
+
+# Complete the 'rotLeft' function below.
+# The function is expected to return an INTEGER_ARRAY.
+# The function accepts following parameters:
+# 1. INTEGER_ARRAY a
+# 2. INTEGER d