Merge pull request #1210 from xiaofei-2020/greed07

添加（0055.跳跃游戏.md）：增加typescript版本

problems/0055.跳跃游戏.md

@@ -154,6 +154,23 @@ var canJump = function(nums) {
 };
 ```
 
+### TypeScript
+
+```typescript
+function canJump(nums: number[]): boolean {
+    let farthestIndex: number = 0;
+    let cur: number = 0;
+    while (cur <= farthestIndex) {
+        farthestIndex = Math.max(farthestIndex, cur + nums[cur]);
+        if (farthestIndex >= nums.length - 1) return true;
+        cur++;
+    }
+    return false;
+};
+```
+
+
+
 
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