四种排序结果都一样吗

运行下面这段程序：

def bubble(a):
    b = list(a)
    n = len(b)
    for i in range(n - 1):
        for j in range(n - 1 - i):
            if b[j] > b[j + 1]:
                b[j], b[j + 1] = b[j + 1], b[j]
    return b

def insertion(a):
    b = list(a)
    for i in range(1, len(b)):
        key = b[i]
        j = i - 1
        while j >= 0 and b[j] > key:
            b[j + 1] = b[j]
            j -= 1
        b[j + 1] = key
    return b

def merge(left, right):
    out = []
    i = 0
    j = 0
    while i < len(left) and j < len(right):
        if left[i] <= right[j]:
            out.append(left[i])
            i += 1
        else:
            out.append(right[j])
            j += 1
    while i < len(left):
        out.append(left[i])
        i += 1
    while j < len(right):
        out.append(right[j])
        j += 1
    return out

def msort(a):
    if len(a) <= 1:
        return list(a)
    m = len(a) // 2
    return merge(msort(a[:m]), msort(a[m:]))

A = [17, 24, 15, 13, 23]
same = (bubble(A) == insertion(A) == msort(A) == sorted(A))
print(same)