Python uses for loop to sort elements in a list
This article introduces how Python uses a for loop to sort elements in a list
list = [13, 22, 6, 99, 11] for m in range(len(list)-1): for n in range(m+1, len(list)): if list[m]> list[n]: temp = list[n] list[n] = list[m] list[m] = temp print list
Result:
[6, 11, 13, 22, 99]
Analysis:
list = [13, 22, 6, 99, 11] for i in range(len(list)-1): for j in range (i+1,len(list)): # print str(i) # print "init--" + str(j) print '本次进行比较的list下标值' + str(i),str(j) if list[i] > list[j]: # print i,j # print '-----' + str(list[i]) + str(list[j]) + '-------' T = list[j] list[j]= list[i] list[i]=T # print T # print list[i],list[j] print '********内部的一次循环***************' print list print list print '++++++++本次内部循环结束+++++++\n\n'
--You can see the cycle process from the printed information--
Result:
本次进行比较的list下标值0 1 [13, 22, 6, 99, 11] 本次进行比较的list下标值0 2 ********内部的一次循环*************** [6, 22, 13, 99, 11] 本次进行比较的list下标值0 3 [6, 22, 13, 99, 11] 本次进行比较的list下标值0 4 [6, 22, 13, 99, 11] [6, 22, 13, 99, 11] ++++++++本次内部循环结束+++++++ 本次进行比较的list下标值1 2 ********内部的一次循环*************** [6, 13, 22, 99, 11] 本次进行比较的list下标值1 3 [6, 13, 22, 99, 11] 本次进行比较的list下标值1 4 ********内部的一次循环*************** [6, 11, 22, 99, 13] [6, 11, 22, 99, 13] ++++++++本次内部循环结束+++++++ 本次进行比较的list下标值2 3 [6, 11, 22, 99, 13] 本次进行比较的list下标值2 4 ********内部的一次循环*************** [6, 11, 13, 99, 22] [6, 11, 13, 99, 22] ++++++++本次内部循环结束+++++++ 本次进行比较的list下标值3 4 ********内部的一次循环*************** [6, 11, 13, 22, 99] [6, 11, 13, 22, 99] ++++++++本次内部循环结束+++++++
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