Merge pull request #2133 from CodingTestStudy2/이진희

[이진희] 2026/10/05

Author: github-actions[bot]

leetcode3/이진희/14. Longest Common Prefix.java

@@ -0,0 +1,19 @@
+class Solution {
+    public String longestCommonPrefix(String[] strs) {
+        StringBuilder sb = new StringBuilder();
+
+        String base = strs[0];
+
+        for(int i=0; i<base.length(); i++) {
+            char c = base.charAt(i);
+            for(int j=1; j<strs.length; j++) {
+                if((strs[j].length()-1)<i || strs[j].charAt(i) != c) {
+                    return sb.toString();
+                }
+            }
+            sb.append(c);
+        }
+
+        return sb.toString();
+    }
+}