题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
strs = input()
hash_table = {}
for sub in strs:
if not hash_table.get(sub):
hash_table.setdefault(sub, 1)
else:
hash_table[sub] += 1
print(len(hash_table))
饿了么成长空间 144人发布
