面试题-求最大字典区间

 

给定一组字符串，求最大字典区间

string=list(input().strip())
target=[]
Max='0'
for i in range(len(string)-1, -1, -1):
    ch=string[i]
    if ch >=Max:
        target.append(ch)
        Max=ch
target.reverse()
print("".join(target))
t=(1,2)
print(t)

输入输出

E:\Anaconda\python.exe F:/pycharmprogram/test/test1.py
ACDBBCDACB
DDCB

Process finished with exit code 0