1535. Find the Winner of an Array Game

https://leetcode.com/problems/find-the-winner-of-an-array-game

Description

Given an integer array arr of distinct integers and an integer k.

A game will be played between the first two elements of the array (i.e. arr[0] and arr[1]). In each round of the game, we compare arr[0] with arr[1], the larger integer wins and remains at position 0 and the smaller integer moves to the end of the array. The game ends when an integer wins k consecutive rounds.

Return the integer which will win the game.

It is guaranteed that there will be a winner of the game.

Example 1:

**Input:** arr = [2,1,3,5,4,6,7], k = 2
**Output:** 5
**Explanation:** Let's see the rounds of the game:
Round |       arr       | winner | win\_count
  1   | [2,1,3,5,4,6,7] | 2      | 1
  2   | [2,3,5,4,6,7,1] | 3      | 1
  3   | [3,5,4,6,7,1,2] | 5      | 1
  4   | [5,4,6,7,1,2,3] | 5      | 2
So we can see that 4 rounds will be played and 5 is the winner because it wins 2 consecutive games.

Example 2:

**Input:** arr = [3,2,1], k = 10
**Output:** 3
**Explanation:** 3 will win the first 10 rounds consecutively.

Example 3:

**Input:** arr = [1,9,8,2,3,7,6,4,5], k = 7

**Output:** 9

Example 4:

**Input:** arr = [1,11,22,33,44,55,66,77,88,99], k = 1000000000

**Output:** 99

Constraints:

• 2 <= arr.length <= 10^5

• 1 <= arr[i] <= 10^6

• arr contains distinct integers.

• 1 <= k <= 10^9

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