Given an array A of N integers. You have to find whether a combination of four elements in the array whose sum is equal to a given value X exists or not.
Example 1:
Input:
N = 6
A[] = {1, 5, 1, 0, 6, 0}
X = 7
Output:
1Explantion:
1, 5, 1, 0 are the four elements which makes sum 7.
Your Task:
You don't need to read input or print anything. Your task is to complete the function find4Numbers() which takes the array A[], its size N and an integer X as inputs and returns true if combination is found else false. Driver code will print 1 or 0 accordingly.
Expected Time Complexity: O(N3) Expected Auxiliary Space: O(1)
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Avoid using static/global variables in coding problems as your code is tested
against multiple test cases and these tend to retain their previous values.
Passing the Sample/Custom Test cases in coding problems does not guarantee the
correctness of code. On submission, your code is tested against multiple test cases
consisting of all possible corner cases and stress constraints.
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