Python字符串操作

            #
             -*- coding:utf-8 -*-
            class
             MaxInnerRec:
    
            def
             countArea(self, A, n):
        
            #
             write code here
        l = []
        for ii in range(n - 1, 0, -1):
            for jj in range(0, ii):
                if A[jj] > A[jj + 1]:
                    # tmp = A[jj]# A[jj] = A[jj + 1]# A[jj + 1] = A[jj]
                    A[jj],A[jj + 1] = A[jj + 1],A[jj]

        print (A)                   #排序完成后for i in range(n):
            l.append(A[i] * (n - i))    #计算面积for ii in range(n):
            if l[0] < l[ii]:
                l[0], l[ii] = l[ii], l[0]
        print(l)                    #对面积排序print(l[0])


if__name__ == "__main__":

    A = []
    ss = input()
    aa = ss.replace(‘[‘,‘‘)
    aa = aa.replace(‘]‘,‘‘)
    aa = aa.split(‘,‘)
    n = int(aa[-1])
    for i in range(int(aa[-1])):
        A.append(int(aa[i]))
    print(A)

    # A = [2,7,9,4,1]# n = 5
    ch = MaxInnerRec()
    ch.countArea(A,n)

ss = [2,7,9,4,1]
aa = ss.replace(‘[‘,‘‘)　　#ss字符串中所有的‘[‘用‘ ‘空格代替　
aa =  2,7,9,4,1]

    A = ‘2,7,9,4,1’      #A为一个字符串    
    aa = aa.split(‘,‘)    #用，分割A，使A成为一个string类型的list

            import
             re
s1 = [8,4,6,2,5,9,1],7

s2=re.split(r‘[[s],]+‘,s1) #去掉[、空格、]，+表示多个符号print (s2)

[‘‘, ‘8‘, ‘4‘, ‘6‘, ‘2‘, ‘5‘, ‘9‘, ‘1‘, ‘7‘]    #为什么前面有个空格，去不掉

a = [‘a‘,‘b‘,‘c‘,‘d‘]     　　　　　　#a[1]=‘a‘,a[-1]=‘d‘
content = ‘‘.join(a)
print content

abcd