Merge pull request #1355 from xiaofei-2020/dp43

添加（0718.最长重复子数组.md）：增加typescript版本

problems/0718.最长重复子数组.md

@@ -297,6 +297,56 @@ const findLength = (nums1, nums2) => {
 }
 ```
 
+TypeScript：
+
+> 动态规划：
+
+```typescript
+function findLength(nums1: number[], nums2: number[]): number {
+    /**
+        dp[i][j]：nums[i-1]和nums[j-1]结尾，最长重复子数组的长度
+     */
+    const length1: number = nums1.length,
+        length2: number = nums2.length;
+    const dp: number[][] = new Array(length1 + 1).fill(0)
+        .map(_ => new Array(length2 + 1).fill(0));
+    let resMax: number = 0;
+    for (let i = 1; i <= length1; i++) {
+        for (let j = 1; j <= length2; j++) {
+            if (nums1[i - 1] === nums2[j - 1]) {
+                dp[i][j] = dp[i - 1][j - 1] + 1;
+                resMax = Math.max(resMax, dp[i][j]);
+            }
+        }
+    }
+    return resMax;
+};
+```
+
+> 滚动数组：
+
+```typescript
+function findLength(nums1: number[], nums2: number[]): number {
+    const length1: number = nums1.length,
+        length2: number = nums2.length;
+    const dp: number[] = new Array(length1 + 1).fill(0);
+    let resMax: number = 0;
+    for (let i = 1; i <= length1; i++) {
+        for (let j = length2; j >= 1; j--) {
+            if (nums1[i - 1] === nums2[j - 1]) {
+                dp[j] = dp[j - 1] + 1;
+                resMax = Math.max(resMax, dp[j]);
+            } else {
+                dp[j] = 0;
+            }
+        }
+    }
+    return resMax;
+};
+```
+
+
+
 
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