add 3884

Author: fishercoder1534

paginated_contents/algorithms/4th_thousand/README.md

@@ -24,6 +24,7 @@
 | 3903 | [Smallest Stable Index I](https://leetcode.com/problems/smallest-stable-index-i/)                                                               | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3903.java) |                                                                               | Easy       |
 | 3898 | [Find the Degree of Each Vertex](https://leetcode.com/problems/find-the-degree-of-each-vertex/)                                                               | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3898.java) |                                                                               | Easy       |
 | 3894 | [Traffic Signal Color](https://leetcode.com/problems/traffic-signal-color/)                                                               | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3894.java) |                                                                               | Easy       |
+| 3884 | [First Matching Character From Both Ends](https://leetcode.com/problems/first-matching-character-from-both-ends/)                                                               | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3884.java) |                                                                               | Easy       |
 | 3838 | [Weighted Word Mapping](https://leetcode.com/problems/weighted-word-mapping/)                                                               | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3838.java) |                                                                               | Easy       |
 | 3813 | [Vowel-Consonant Score](https://leetcode.com/problems/vowel-consonant-score/)                                                               | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3813.java) |                                                                               | Easy       |
 | 3701 | [Compute Alternating Sum](https://leetcode.com/problems/compute-alternating-sum/)                                                               | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3701.java) |                                                                               | Easy       |

src/main/java/com/fishercoder/solutions/fourththousand/_3884.java

@@ -0,0 +1,14 @@
+package com.fishercoder.solutions.fourththousand;
+
+public class _3884 {
+    public static class Solution1 {
+        public int firstMatchingIndex(String s) {
+            for (int i = 0; i < s.length(); i++) {
+                if (s.charAt(i) == s.charAt(s.length() - i - 1)) {
+                    return i;
+                }
+            }
+            return -1;
+        }
+    }
+}