最近學(xué)習(xí)了python基礎(chǔ),寫一下3大排序練練手:
復(fù)制代碼
代碼如下:
'''
Created on 2013-8-23
@author: codegeek
'''
//冒泡排序
def bubble_sort(seq):
??? for i in range(len(seq)):
??????? for j in range(i,len(seq)):
??????????? if seq[j] < seq[i]:
??????????????? tmp = seq[j]
??????????????? seq[j] = seq[i]
??????????????? seq[i] = tmp
//選擇排序
def selection_sort(seq):
??? for i in range(len(seq)):
??????? position = i
??????? for j in range(i,len(seq)):
??????????? if seq[position] > seq[j]:
??????????????? position = j
??????? if position != i:
??????????????? tmp = seq[position]
??????????????? seq[position] = seq[i]
??????????????? seq[i] = tmp
//插入排序
def insertion_sort(seq):
??? if len(seq) > 1:
??????? for i in range(1,len(seq)):
??????????? while i > 0 and seq[i] < seq[i-1]:
??????????????? tmp = seq[i]
??????????????? seq[i] = seq[i-1]
??????????????? seq[i-1] = tmp
??????????????? i = i - 1
//???????
if __name__ == "__main__":
??? print "--------bubble_sort-------------"
??? seq = [22,1,33,4,7,6,8,9,11]
??? bubble_sort(seq)
??? print seq
??? print "--------selection_sort-------------"
??? seq = [88,44,33,4,7,6,8,9,11]
??? selection_sort(seq)
??? print seq
??? print "--------insertion_sort-------------"
??? seq = [777,44,33,4,7,6,1111,100,11]
??? insertion_sort(seq)
??? print seq
以上就是3則Python中冒泡,選擇,插入排序的代碼及使用方法了,希望小伙伴們能夠喜歡。
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