Finding Pair of Sums

JavaScript
#1

I want to go though an array and check if any two numbers would sum to the target value. Here’s my code:

function findPairForSum(arr, target) {
  var pairSums = []
  var newArr = []
  for (var i = 0; i < arr.length; i++) { 
    if (arr[i] < target) {
      newArr.push(arr[i])
    }
  }

// the above loop is to get rid of values that can't possibly be sumed to target (i.e. numbers larger than target)
  
//For the next loop, let's assume newArr[i] is 3

for (var k = 0; k < newArr.length; k++) {
    var otherPair = target - newArr[i] // 6 = 9 - 3
    if (newArr.includes(otherPair)) { // if newArr has 6
      pairSums.push(newArr[i], otherPair) // push [3,6] to pairSum array
    }
  }
  return pairSums
}

findPairForSum([3, 34, 4, 12, 5, 2], 9);

Can anyone tell me what I did wrong? It just returns an empty array. Thanks!

#2

You have two issues

  1. You are using i when you mean k

  2. You are pushing two numbers 3, 6 instead of [3, 6]

Also, you are getting duplicates, which you might not want.

#3

Thanks for the answer! How do I just get one array with those numbers ([3, 6])? I tried pairSums.push([newArr[k], otherPair]) but that didn’t work.

#4