摘要: 1:已知字符串 str= 'skdaskerkjsalkj',请统计该字符串中各字母出现的次数 思路是:用字典 str='skdaskerkjsalkj'a=dict()for i in str: if i not in a.keys(): a[i]=1 else: a[i]=a[i]+1print 阅读全文
posted @ 2022-09-30 18:19 观呼吸 阅读(2208) 评论(0) 推荐(0)