Leetcode—374. 猜数字大小【简单】

2024每日刷题（202）

Leetcode—374. 猜数字大小

C++实现代码

/** * Forward declaration of guess API.* @param  num   your guess* @return 	     -1 if num is higher than the picked number*			      1 if num is lower than the picked number*               otherwise return 0* int guess(int num);*/class Solution {
public:int guessNumber(int n) {int l = 1;int r = n;// [1, n]while(l <= r) {int pick = l + (r - l) / 2;if(guess(pick) < 0) {r = pick - 1;} else if(guess(pick) == 0) {return pick;} else {l = pick + 1;}}return l;}
};

运行结果

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