题解 | #寻找峰值# 二分查找
寻找峰值
https://www.nowcoder.com/practice/fcf87540c4f347bcb4cf720b5b350c76
import java.util.*;
public class Solution {
/**
* 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
*
*
* @param nums int整型一维数组
* @return int整型
*/
public int findPeakElement (int[] nums) {
// write code here
int left = 0;
int right = nums.length - 1;
while (left < right) {
int mid = left + (right - left) / 2;
if (mid - 1 >= 0 && nums[mid - 1] > nums[mid]) {
right = mid - 1;
} else if (mid + 1 < nums.length && nums[mid + 1] > nums[mid]){
left = mid + 1;
} else {
return mid;
}
}
return left;
}
}
查看29道真题和解析