def selectionSort(alist):
    for fillslot in range(len(alist)-1, 0, -1):
        positionOfMax = 0
        for location in range(1, fillslot+1):
            if alist[location] > alist[positionOfMax]:
                positionOfMax = location

        alist[positionOfMax], alist[fillslot] = \
                alist[fillslot], alist[positionOfMax]