Good afternoon! Here's our prompt for today.

We're given a set in the form of an array with a unique integers. Can you write a function that tells us whether it can be separated into two subsets whose elements have equal sums?

Here's an example: [5, 9, 7, 21]:

The below would return true because newSet can be divided into [5, 9, 7] and [21]. Both subsets sum to 21 and are equal.

1function hasEqualSubsets(arr) {
2  // fill
3}
4const newSet = [5, 7, 21, 9]
5
6console.log(hasEqualSubsets(newSet));   // true

And in another example, the below returns false since newSet cannot be divided into equal subsets.

1const newSet = [9, 3, 1]
2
3console.log(hasEqualSubsets(newSet));   // false

Constraints

• Length of the array <= 1000
• The values will always contain integer values between -1000 and 1000
• The final answer will always fit in the integer value
• Expected time complexity : O(n^2)
• Expected space complexity : O(n^2)

Try to solve this here or in Interactive Mode.

How do I practice this challenge?

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    'PASSED: hasEqualSubsets([18,1,5,19,5,15,15,7,19,11,8,7,13]) should return false'

var assert = require('assert');

​

function hasEqualSubsets(nums) {

  // Fill in this method

  return nums;

}

​

try {

  assert.deepEqual(hasEqualSubsets([14, 20, 9]), false);

​

  console.log('PASSED: ' + 'hasEqualSubsets([14,20,9]) should return false');

} catch (err) {

  console.log(err);

}

​

try {

  assert.deepEqual(hasEqualSubsets([3, 9, 5, 2, 9, 2, 8, 0, 11]), false);

​

  console.log(

    'PASSED: ' + 'hasEqualSubsets([3,9,5,2,9,2,8,0,11]) should return false'

  );

} catch (err) {

  console.log(err);

}

​

try {

  assert.deepEqual(hasEqualSubsets([8, 13, 12, 20, 10, 0, 17, 3, 4]), false);

​

  console.log(

Here's our guided, illustrated walk-through.

How do I use this guide?