小A 和 小B 在玩猜数字。小B 每次从 1, 2, 3 中随机选择一个,小A 每次也从 1, 2, 3 中选择一个猜。他们一共进行三次这个游戏,请返回 小A 猜对了几次?
输入的guess数组为 小A 每次的猜测,answer数组为 小B 每次的选择。guess和answer的长度都等于3。
示例 1:
输入:guess = [1,2,3], answer = [1,2,3]
输出:3
解释:小A 每次都猜对了。
示例 2:
输入:guess = [2,2,3], answer = [3,2,1]
输出:1
解释:小A 只猜对了第二次。
限制:
guess的长度 = 3
answer的长度 = 3
guess的元素取值为 {1, 2, 3} 之一。
answer的元素取值为 {1, 2, 3} 之一。
来源:力扣(LeetCode)
链接:https://leetcode-cn.com/problems/guess-numbers
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代码:
public int uniqueMorseRepresentations(String[] words) {
String[] dict = new String[]{".-","-...","-.-.","-..",".","..-.","--.","....","..",".---","-.-",".-..","--","-.","---",".--.","--.-",".-.","...","-","..-","...-",".--","-..-","-.--","--.."};
Set<String> set = new HashSet<>();
for (String word : words) {
StringBuilder sb = new StringBuilder();
for (char s : word.toCharArray()) {
sb.append(dict[s-'a']);
}
set.add(sb.toString());
}
return set.size();
}