题解 | #字符统计#
字符统计
https://www.nowcoder.com/practice/c1f9561de1e240099bdb904765da9ad0
import sys
def do(sentence):
# 统计
d_c = dict()
d_r = dict()
for c in sentence:
if c in d_c.keys():
d_c[c] += 1
else:
d_c[c] = 1
# 排序
return ''.join(dict(sorted(d_c.items(), key=lambda x:(-x[1], ord(x[0])))).keys())
if __name__ == '__main__':
sentence = sys.stdin.readline().strip()
r = do(sentence)
print(r)
