{ "data": { "question": { "questionId": "1428", "questionFrontendId": "1306", "categoryTitle": "Algorithms", "boundTopicId": 62635, "title": "Jump Game III", "titleSlug": "jump-game-iii", "content": "

Given an array of non-negative integers arr, you are initially positioned at start index of the array. When you are at index i, you can jump to i + arr[i] or i - arr[i], check if you can reach to any index with value 0.

\n\n

Notice that you can not jump outside of the array at any time.

\n\n

 

\n

Example 1:

\n\n
\nInput: arr = [4,2,3,0,3,1,2], start = 5\nOutput: true\nExplanation: \nAll possible ways to reach at index 3 with value 0 are: \nindex 5 -> index 4 -> index 1 -> index 3 \nindex 5 -> index 6 -> index 4 -> index 1 -> index 3 \n
\n\n

Example 2:

\n\n
\nInput: arr = [4,2,3,0,3,1,2], start = 0\nOutput: true \nExplanation: \nOne possible way to reach at index 3 with value 0 is: \nindex 0 -> index 4 -> index 1 -> index 3\n
\n\n

Example 3:

\n\n
\nInput: arr = [3,0,2,1,2], start = 2\nOutput: false\nExplanation: There is no way to reach at index 1 with value 0.\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "跳跃游戏 III", "translatedContent": "

这里有一个非负整数数组 arr，你最开始位于该数组的起始下标 start 处。当你位于下标 i 处时，你可以跳到 i + arr[i] 或者 i - arr[i]。

\n\n

请你判断自己是否能够跳到对应元素值为 0 的 任一 下标处。

\n\n

注意，不管是什么情况下，你都无法跳到数组之外。

\n\n

 

\n\n

示例 1：

\n\n
输入：arr = [4,2,3,0,3,1,2], start = 5\n输出：true\n解释：\n到达值为 0 的下标 3 有以下可能方案： \n下标 5 -> 下标 4 -> 下标 1 -> 下标 3 \n下标 5 -> 下标 6 -> 下标 4 -> 下标 1 -> 下标 3 \n
\n\n

示例 2：

\n\n
输入：arr = [4,2,3,0,3,1,2], start = 0\n输出：true \n解释：\n到达值为 0 的下标 3 有以下可能方案： \n下标 0 -> 下标 4 -> 下标 1 -> 下标 3\n
\n\n

示例 3：

\n\n
输入：arr = [3,0,2,1,2], start = 2\n输出：false\n解释：无法到达值为 0 的下标 1 处。 \n
\n\n

 

\n\n

提示：

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