pta天梯L1-003 个位数统计

L1-003 个位数统计 - 团体程序设计天梯赛-练习集

import sys
input = lambda: sys.stdin.readline().strip()
def slove():
    n = input()
    dic = {}
    ans = []
    for i in n:
        if i in dic:
            dic[i] += 1
        else:
            dic[i] = 1
    for key,value in dic.items():
        ans.append([int(key),value])
    ans.sort()
    for i,j in ans:
        a = str(i) + ':' + str(j)
        print(a)
slove()