Selection sort

selectionSort.cpp

void selectionSort(int *arr, int length){
  for(int i = 0; i < length; i++){
    int minIndex = i;
    for(int j = i + 1; j < length; j++){
      if(arr[minIndex] > arr[j]){
        minIndex = j;
      }
    }
    if(minIndex != i){
      int temp = arr[minIndex];
      arr[minIndex] = arr[i];
      arr[i] = temp;
    }
  }
}