P21672 [GeeksforGeeks] Who will win 1587115621
普及-
题目描述

Given an array arr[] sorted in ascending order of size N and an integer K. Check if K is present in the array or not.
Example 1:
Input:
N = 5, K = 6
arr[] = {1,2,3,4,6}
Output: 1
Exlpanation: Since, 6 is present in
the array at index 4 (0-based indexing),
output is 1.

Example 2:
Input:
N = 5, K = 2
arr[] = {1,3,4,5,6}
Output: -1
Exlpanation: Since, 2 is not present
in the array, output is -1.

Your Task:
You don't need to read input or print anything. Complete the function searchInSorted() which takes the sorted array arr[], its size N and the element K as input parameters and returns 1 if K is present in the array, else it returns -1.
Expected Time Complexity: O(Log N)
Expected Auxiliary Space: O(1)

Constraints:
1 <= N <= 10^{6}
1 <= K <= 10^{6}
1 <= arr[i] <= 10^{6}

输入格式

见题面

输出格式

见题面

样例输入
N = 5, K = 6 arr[] = {1,2,3,4,6}
样例输出
1