Sort

def selectionSort(list, order=True):
    for i in range(len(list) - 1):
        # mark minimal index
        min_index = i
        # select minimal element
        for j in range(i + 1, len(list)):
            if order:
                if list[j] < list[min_index]:
                    min_index = j
            else:
                if list[j] > list[min_index]:
                    min_index = j
            # exchange index
            if min_index != i:
                list[i], list[min_index] = list[min_index], list[i]