Create 2486. Append Characters to String to Make Subsequence (#493)

Author: Chayandas07

2486. Append Characters to String to Make Subsequence

@@ -0,0 +1,18 @@
+class Solution {
+public:
+    int appendCharacters(string s, string t) {
+         int i = 0, j = 0;
+    int len_s = s.size(), len_t = t.size();
+    
+    // Traverse both strings
+    while (i < len_s && j < len_t) {
+        if (s[i] == t[j]) {
+            j++;
+        }
+        i++;
+    }
+    
+    // The characters that need to be appended
+    return len_t - j;
+    }
+};