Problem Solving Approach

// Output: 56(2^2 + 4^2 + 6^2 = 4 + 16 + 36 = 56)
/*
[2, 4, 6]
[4, 16, 36]
56
*/
//Time complexity (n)
//space complexity (n)
//Sum of Event Square
// function sumOfEvenSquare(inputArr) {
//   Define a array to track even numbers
//   const evenArr = []
//   Define array to track down the squared number
//   const squaredArr = []
//   Define a variable to track down the sum
//   let total = 0

//  find out the even numbers
//   for (let elm of inputArr) {
//     console.log(elm)
//     if (elm % 2 === 0) {
//       evenArr.push(elm)
//     }
//   }
//   Squared the even numbers and return an array
//   for (let elm of evenArr) {
//     squaredArr.push(elm * elm)
//   }
//   sum of the squared number array
//   for (let elm of squaredArr) {
//     total += elm
//   }
// return the result
//   return total
// }

//Sum of Event Square
function sumOfEvenSquare(inputArr) {
  //find out the even numbers and squared and sum of those numbers
  const total = inputArr
    .filter((elm) => elm % 2 === 0)
    .map((elm) => elm * elm)
    .reduce((acc, elm) => acc + elm)

  //return the result
  return total
}
console.log(sumOfEvenSquare([1, 2, 4, 6, 7]))