插入排序和冒泡排序的概念我就不解釋了吧spa
。。。插入排序代碼:code
1 if __name__ =='__main__': 2 l = [4,1,9,13,34,26,10,7,4] 3 4 #=========================insert_sort========================= 5 def insert_sort(l): 6 for i in range(len(l)): 7 min_index = i 8 for j in range(i+1,len(l)): 9 if l[min_index] > l[j]: 10 min_index = j 11 tmp = l[i] 12 l[i] = l[min_index] 13 l[min_index] = tmp 14 print(str(l)) 15 print("result: " + str(l)) 16 17 insert_sort(l) 18 print("insert_sort success!!!")
每次遍歷,先假設list[min_index]處的值最小,再跟後面的值依次比較,當發現list[j]比list[min_index]值小時,這時的min_index替換爲j,再跟後面的進行比較,指導找到最小的那個list[j],將j付給min_index,這時l[min_index]就是遍歷過程當中的最小值了,不知道說清楚了沒~~blog
結果以下:排序
[1, 4, 9, 13, 34, 26, 10, 7, 4] [1, 4, 9, 13, 34, 26, 10, 7, 4] [1, 4, 4, 13, 34, 26, 10, 7, 9] [1, 4, 4, 7, 34, 26, 10, 13, 9] [1, 4, 4, 7, 9, 26, 10, 13, 34] [1, 4, 4, 7, 9, 10, 26, 13, 34] [1, 4, 4, 7, 9, 10, 13, 26, 34] [1, 4, 4, 7, 9, 10, 13, 26, 34] [1, 4, 4, 7, 9, 10, 13, 26, 34] result: [1, 4, 4, 7, 9, 10, 13, 26, 34] insert_sort success!!!
下面再來看冒泡排序it
1 #==========================bubble_sort======================== 2 3 def bubble_sort(l): 4 for i in range(len(l),0,-1): 5 for j in range(len(l)-1): 6 if l[j] > l[j+1]: 7 tmp = l[j] 8 l[j] = l[j+1] 9 l[j+1] = tmp 10 11 print("result: " + str(l)) 12 13 bubble_sort(l) 14 print("bubble_sort success!!!")
不解釋了。。class