162.寻找峰值

寻找峰值

峰值元素是指其值严格大于左右相邻值的元素。给你一个整数数组 nums，找到峰值元素并返回其索引。

解析

var findPeakElement = function (nums) {
  let left = 0, right = nums.length - 1;
  while (left < right) {
    const mid = (left + right) >> 1;
    if (nums[mid] > nums[mid + 1]) right = mid;
    else left = mid + 1;
  }
  return left;
};