字符串初学3（0.5）
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说明
给你有n个字符串的数组，找出里面有多少个字符串是包含有字符‘a’的。
5
egg sds wedf aqwe aa
2
You cannot submit for this problem because the contest is ended. You can click "Open in Problem Set" to view this problem in normal mode.
给你有n个字符串的数组，找出里面有多少个字符串是包含有字符‘a’的。
5
egg sds wedf aqwe aa
2