Update 0718.最长重复子数组.md

0178.最长重复子数组新增C语言实现

problems/0718.最长重复子数组.md

@@ -560,10 +560,30 @@ impl Solution {
 }
 ```
 
+### C:
+
+```c
+int findLength(int* nums1, int nums1Size, int* nums2, int nums2Size) {
+    int dp[nums1Size + 1][nums2Size + 1];
+    memset(dp, 0, sizeof(dp));
+    int result = 0;
+    for (int i = 1; i <= nums1Size; ++i) {
+        for (int j = 1; j <= nums2Size; ++j) {
+            if(nums1[i - 1] == nums2[j - 1]){
+                dp[i][j] = dp[i - 1][j - 1] + 1;
+            }
+            if(dp[i][j] > result){
+                result = dp[i][j];
+            }
+        }
+    }
+    return result;
+}
+```
+
 
 
 <p align="center">
 <a href="https://programmercarl.com/other/kstar.html" target="_blank">
   <img src="../pics/网站星球宣传海报.jpg" width="1000"/>
 </a>
-