feat: finish sqrt_x in python

Author: bujosa

alternative/easy/sqrt_x.py

@@ -0,0 +1,25 @@
+def my_sqrt(x):
+    left = 0
+    right = x
+    ans = -1
+
+    while left <= right:
+        mid = left + (right - left) // 2
+
+        if mid > 0 and mid > x // mid:
+            right = mid - 1
+        else:
+            ans = mid
+            left = mid + 1
+
+    return ans
+
+# Test cases
+assert my_sqrt(0) == 0
+assert my_sqrt(1) == 1
+assert my_sqrt(4) == 2
+assert my_sqrt(8) == 2
+assert my_sqrt(9) == 3
+assert my_sqrt(10) == 3
+assert my_sqrt(30) == 5
+assert my_sqrt(2147395599) == 46339