[题目] You're given strings J representing the types of stones that are jewels, and S representing the stones you have. Each character in S is a type of stone you have. You want to know how many of the stones you have are also jewels. The letters in …
题目: 给定字符串J 代表石头中宝石的类型,和字符串 S代表你拥有的石头. S 中每个字符代表了一种你拥有的石头的类型,你想知道你拥有的石头中有多少是宝石. You're given strings J representing the types of stones that are jewels, and S representing the stones you have. Each character in S is a type of stone you have. You want…
You're given strings J representing the types of stones that are jewels, and S representing the stones you have. Each character in S is a type of stone you have. You want to know how many of the stones you have are also jewels. The letters in J are…
Jewels and Stones You're given strings J representing the types of stones that are jewels, and S representing the stones you have. Each character inS is a type of stone you have. You want to know how many of the stones you have are also jewels. The…
Question 771. Jewels and Stones Solution 题目大意:两个字符串J和S,其中J中每个字符不同,求S中包含有J中字符的个数,重复的也算 思路:Set记录字符串J中的每个字符,遍历S中的字符,如果出现在Set中,count加1 Java实现: public int numJewelsInStones(String J, String S) { Set<Character> set = new HashSet<>(); int count = 0;…
