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g0501_0600.s0503_next_greater_element_ii.readme.md Maven / Gradle / Ivy

503\. Next Greater Element II

Medium

Given a circular integer array `nums` (i.e., the next element of `nums[nums.length - 1]` is `nums[0]`), return _the **next greater number** for every element in_ `nums`.

The **next greater number** of a number `x` is the first greater number to its traversing-order next in the array, which means you could search circularly to find its next greater number. If it doesn't exist, return `-1` for this number.

**Example 1:**

**Input:** nums = [1,2,1]

**Output:** [2,-1,2] Explanation: The first 1's next greater number is 2; The number 2 can't find next greater number. The second 1's next greater number needs to search circularly, which is also 2.

**Example 2:**

**Input:** nums = [1,2,3,4,3]

**Output:** [2,3,4,-1,4]

**Constraints:**

*   1 <= nums.length <= 104
*   -109 <= nums[i] <= 109