Key Pair
Easy Accuracy: 49.96% Submissions: 28718 Points: 2

Given an array Arr of N positive integers and another number X. Determine whether or not there exist two elements in Arr whose sum is exactly X.

Example 1:

Input:
N = 6, X = 16
Arr[] = {1, 4, 45, 6, 10, 8}
Output: Yes
Explanation: Arr[3] + Arr[4] = 6 + 10 = 16

Example 2:

Input:
N = 5, X = 10
Arr[] = {1, 2, 4, 3, 6}
Output: Yes
Explanation: Arr[2] + Arr[4] = 4 + 6 = 10

Your Task:
You don't need to read input or print anything. Your task is to complete the function hasArrayTwoCandidates() which takes the array of integers arr, n and x as parameters and returns boolean denoting the answer.

Expected Time Complexity: O(N)
Expected Auxiliary Space: O(N)

Constraints:
1 ≤ N ≤ 105
1 ≤ Arr[i] ≤ 105

 

We are replacing the old Disqus forum with the new Discussions section given below.
Click here to view old Disqus comments.


to report an issue on this page.

Editorial

We strongly recommend solving this problem on your own before viewing its editorial. Do you still want to view the editorial?

Yes

All Submissions

My Submissions:

Login to access your submissions.

Key Pair

Output Window