python 排序模块 ———— heapq（学习笔记）

from heapq import *
def heasort(initi):# 排序
    h=[]
    for value in initi:
        heappush(h,value)#将每一个item进入heap中
    return [heappop(h) for  i in range(len(h))]
def merge_sort(seq):#堆排序
    if len(seq) <= 1:#如果seq的list长度小于1 直接返回
        return seq
    else:              
        middle = int(len(seq)/2)
        left = merge_sort(seq[:middle])
        right = merge_sort(seq[middle:])
        return list(merge(left, right)) 
if __name__ == ‘__main__‘:
    seq=[1,3,6,2,4]
    print(merge_sort(seq))
    print(heasort([11,2,31,4]))