Two Sum - JavaScript

two-sum.js

const twoSum = (nums, target) => {
  // given an array, return pair of indices corresponding to numbers in array that equal target
  // there is exactly 1 solution per array of nums
  
  // need variable to store indices of solution
  const solution = []

  // need variable to store count to leverage while loop
  let count = 0
  
  // create while loop to be able to iterate through entire nums for each num
  while (count < nums.length) {
    // need to iterate through nums and add nums[count] + num
    nums.forEach((num, index) => {
      // check if index < count, if so, do not calculate
      if (nums[count] + num === target && index > count) {
        solution.push(count)
        solution.push(index)
        console.log(count, index)
      }
    })
    
    // need to increase count to continue loop
    count ++
  }
  
  // return solution array with indices
  return solution
};