Count triplets with sum smaller than X
Basic Accuracy: 28.52% Submissions: 534 Points: 1

Given an array arr[] of distinct integers of size N and a sum value X, the task is to find count of triplets with the sum smaller than the given sum value X.

 

Example 1:

Input: N = 6, X = 2
arr[] = {-2, 0, 1, 3}
Output:  2
Explanation: Below are triplets with 
sum less than 2 (-2, 0, 1) and (-2, 0, 3). 


Example 2:

Input: N = 5, X = 12
arr[] = {5, 1, 3, 4, 7}
Output: 4
Explanation: Below are triplets with 
sum less than 12 (1, 3, 4), (1, 3, 5), 
(1, 3, 7) and (1, 4, 5).

 

Your Task:
This is a function problem. You don't need to take any input, as it is already accomplished by the driver code. You just need to complete the function countTriplets() that take array arr[], integer and integer X as parameters and returns the count of triplets.

 

Expected Time Complexity: O(N2).
Expected Auxiliary Space: O(1).

 

Constraints:
3 ≤ N ≤ 103

 

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.

Output Window