function selectionSort (arr) {
                const n = arr.length
                
                for (let i = 0; i < n - 1; i++) {
                  let minIndex = i
                  for (let j = i + 1; j < n; j++) {
                    if (arr[j] < arr[minIndex]) {
                      minIndex = j
                    }
                  }
                  if (minIndex !== i) {
                    let tempValue = arr[i]
                    arr[i] = arr[minIndex]
                    arr[minIndex] = tempValue
                  }
                }
              }