Merge pull request #1293 from xiaofei-2020/dp24

添加（0279.完全平方数.md）：增加typescript版本

problems/0279.完全平方数.md

@@ -355,5 +355,24 @@ var numSquares2 = function(n) {
 };
 ```
 
+TypeScript：
+
+```typescript
+function numSquares(n: number): number {
+    const goodsNum: number = Math.floor(Math.sqrt(n));
+    const dp: number[] = new Array(n + 1).fill(Infinity);
+    dp[0] = 0;
+    for (let i = 1; i <= goodsNum; i++) {
+        const tempVal: number = i * i;
+        for (let j = tempVal; j <= n; j++) {
+            dp[j] = Math.min(dp[j], dp[j - tempVal] + 1);
+        }
+    }
+    return dp[n];
+};
+```
+
+
+
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