new：新增Cangjie题解：最长公共子序列

problems/1143.最长公共子序列.md

@@ -399,6 +399,24 @@ int longestCommonSubsequence(char* text1, char* text2) {
 }
 ```
 
+### Cangjie
+```cangjie
+func longestCommonSubsequence(text1: String, text2: String): Int64 {
+    let n = text1.size
+    let m = text2.size
+    let dp = Array(n + 1, {_ => Array(m + 1, repeat: 0)})
+    for (i in 1..=n) {
+        for (j in 1..=m) {
+            if (text1[i - 1] == text2[j - 1]) {
+                dp[i][j] = dp[i - 1][j - 1] + 1
+            } else {
+                dp[i][j] = max(dp[i - 1][j], dp[i][j - 1])
+            }
+        }
+    }
+    return dp[n][m]
+}
+```
 
 
 <p align="center">