Minimum number characters to append to a string to make it a subsequence

of another string

z-problems/leetcode/2486.py

@@ -0,0 +1,21 @@
+class Solution:
+    def appendCharacters(self, s: str, t: str) -> int:
+        sn = len(s)
+        tn = len(t)
+
+        cnt = 0
+        for i in range(0, sn):
+            if cnt < tn and s[i] == t[cnt]:
+                cnt += 1
+
+        ans = 0 if cnt == tn else tn - cnt
+        return ans
+
+
+if __name__ == '__main__':
+    obj = Solution()
+    s = "coaching"
+    t = "coding"
+    ans = obj.appendCharacters(s, t)
+    print(ans)
+    print(s[5])