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Partition array to K subsets
Hard Accuracy: 30.34% Submissions: 8579 Points: 8

Given an integer array a[ ] of N elements and an integer K, the task is to check if the array a[ ] could be divided into K non-empty subsets with equal sum of elements.
Note: All elements of this array should be part of exactly one partition.

Example 1:

N = 5
a[] = {2,1,4,5,6}
K = 3
Explanation: we can divide above array 
into 3 parts with equal sum as (2, 4), 
(1, 5), (6)

​Example 2:

N = 5 
a[] = {2,1,5,5,6}
K = 3
Explanation: It is not possible to divide
above array into 3 parts with equal sum.

Your Task:
You don't need to read input or print anything. Your task is to complete the function isKPartitionPossible() which takes the array a[], the size of the array N, and the value of K as inputs and returns true(same as 1) if possible, otherwise false(same as 0).

Expected Time Complexity: O(N*2N).
Expected Auxiliary Space: O(2N).

1 ≤ K ≤ N ≤ 10
1 ≤ a[i] ≤ 100

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Partition array to K subsets

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