Create: 1143-longest-common-subsequence.c

mdmzfzl · web-flow · commit cd7c86cbaac8 · 2023-08-09T11:26:35.000+03:00
diff --git a/c/1143-longest-common-subsequence.c b/c/1143-longest-common-subsequence.c
@@ -0,0 +1,27 @@
+int longestCommonSubsequence(char * text1, char * text2) {
+    int m = strlen(text1);
+    int n = strlen(text2);
+    
+    int dp[m + 1][n + 1]; // dp[i][j] represents the length of the LCS of text1[0...i-1] and text2[0...j-1]
+    
+    // Initialize the first row and column to 0
+    for (int i = 0; i <= m; i++) {
+        dp[i][0] = 0;
+    }
+    for (int j = 0; j <= n; j++) {
+        dp[0][j] = 0;
+    }
+    
+    // Dynamic programming approach to fill the dp array
+    for (int i = 1; i <= m; i++) {
+        for (int j = 1; j <= n; j++) {
+            if (text1[i - 1] == text2[j - 1]) {
+                dp[i][j] = dp[i - 1][j - 1] + 1;
+            } else {
+                dp[i][j] = (dp[i - 1][j] > dp[i][j - 1]) ? dp[i - 1][j] : dp[i][j - 1];
+            }
+        }
+    }
+    
+    return dp[m][n];
+}
