LeetCode374-猜数字大小(二分查找)

public int guessNumber(int n) {
        
        //n是一个最大值
        
        //从1~n里面找一个数字
        
        
        int low = 1;
        int high = n;
        
        
        while(true){
            
            int mid = (low+high)/2;
            
            int result = guess(mid);
            
            //他的数字比较小，就是我猜的大了
            if(result==-1){
                high = mid-1;
            }else if(result == 1){
                low = mid+1;
            }else{
                return mid;
            }
            
        }
        
        
        
        
        
    }

int mid = low+(high-low)/2;