Create Solution.py

Author: chandrikadeb7

Interleaving String/Solution.py

@@ -0,0 +1,21 @@
+class Solution:
+    def isInterleave(self, s1: str, s2: str, s3: str) -> bool:
+        if len(s1) + len(s2) != len(s3):
+            return False
+        
+        m = len(s1)
+        n = len(s2)
+
+        dp = [[False] * (n+1) for _ in range(m+1)]
+
+        dp[0][0] = True
+        for i in range(1, m+1):
+            dp[i][0] = dp[i-1][0] and s3[i-1] == s1[i-1]
+        for j in range(1, n+1):
+            dp[0][j] = dp[0][j-1] and s3[j-1] == s2[j-1]
+
+        for i in range(1, m+1):
+            for j in range(1, n+1):
+                dp[i][j] = (dp[i-1][j] and s3[i+j-1]==s1[i-1]) or (dp[i][j-1] and s3[i+j-1]==s2[j-1])
+
+        return dp[-1][-1]