Check if it is perfect square number

northtree · northtree · commit 523dec5b50eb · 2019-10-27T15:14:43.000+11:00
diff --git a/algorithms/math/perfect_square.py b/algorithms/math/perfect_square.py
@@ -0,0 +1,21 @@
+def is_perfect_square(num):
+    """
+    Given a positive integer num, write a function which returns True if num is a perfect square else False.
+
+    Note: Do not use any built-in library function such as `sqrt`.
+
+    :type num: int
+    :rtype: bool
+    """
+    i = 0
+    while i * i < num:
+        i += 1
+    if i * i == num:
+        return True
+    else:
+        return False
+        
+
+# Test
+print(is_perfect_square(16))
+print(is_perfect_square(14))
