Merge pull request #617 from speztra/power_py

Create power.py

Author: probot-auto-merge[bot]

Python/power.py

@@ -0,0 +1,28 @@
+def power(x, y):
+    if(y == 0):
+        return 1
+    if(y < 0):
+        n = (1/x) * power(x, (y+1)/2)
+        return n*n
+    if(y%2 == 0):
+        m = power(x, y/2)
+        return m*m
+    else:
+        return x * power(x, y-1)
+
+def main():
+    print("To calculate x^y ...\n")
+    x = float(input("Please enter x: "))
+    y = float(input("Please enter y: "))
+
+    if(x==0):
+        if(y > 0):
+            print(0)
+        else:
+            print("x^y is not defined\n")
+    else:
+        print(power(x,y))
+    exit
+
+if __name__ == '__main__':
+    main()