# -*- coding:utf-8 -*-
from collections import Counter
c = Counter()
for ch in "programmer":
print(c[ch])
c[ch] = c[ch]+1
print(c)
确实没大懂这里的逻辑c[ch] = c[ch]+1
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我的脾气太好辣
# -*- coding:utf-8 -*-
from collections import Counter
c = Counter()
for ch in "programmer":
print(c[ch])
c[ch] = c[ch]+1
print(c[ch])
print(c)