Merge pull request #1288 from xiaofei-2020/dp22

添加（0070.爬楼梯完全背包版本.md）：增加typescript版本

problems/0070.爬楼梯完全背包版本.md

@@ -199,6 +199,28 @@ var climbStairs = function(n) {
 };
 ```
 
+TypeScript：
+
+```typescript
+function climbStairs(n: number): number {
+    const m: number = 2;    // 本题m为2
+    const dp: number[] = new Array(n + 1).fill(0);
+    dp[0] = 1;
+    // 遍历背包
+    for (let i = 1; i <= n; i++) {
+        // 遍历物品
+        for (let j = 1; j <= m; j++) {
+            if (j <= i) {
+                dp[i] += dp[i - j];
+            }
+        }
+    }
+    return dp[n];
+};
+```
+
+
+
 
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