题解 | #二分查找-I#
二分查找-I
https://www.nowcoder.com/practice/d3df40bd23594118b57554129cadf47b
/** * 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 * @param target int整型 * @return int整型 */ function search( nums , target ) { let left = 0; let len = nums.length let right = len -1; let res = -1 if (len === 1 && nums[left] === target) { return 0 } while(left <= right) { let mid = (left+right)>>1 if (nums[mid] === target) { res = mid break; } else if (nums[mid] < target) { left = mid + 1 } else { right = mid -1 } } return res; } module.exports = { search : search };