longest common subsequence solution

Author: jinvicky

longest-common-subsequence/jinvicky.java

@@ -0,0 +1,18 @@
+class Solution {
+    public int longestCommonSubsequence(String text1, String text2) {
+        int m = text1.length();
+        int n = text2.length();
+        int[][] dp = new int[m + 1][n + 1];
+
+        for (int i = 1; i <= m; i++) {
+            for (int j = 1; j <= n; j++) {
+                if (text1.charAt(i - 1) == text2.charAt(j - 1)) {
+                    dp[i][j] = dp[i - 1][j - 1] + 1;  // 문자가 같으면 대각선 값 + 1
+                } else {
+                    dp[i][j] = Math.max(dp[i - 1][j], dp[i][j - 1]);  // 위 or 왼쪽 중 큰 값
+                }
+            }
+        }
+        return dp[m][n];
+    }
+}