简单
给出第一个词 first 和第二个词 second,考虑在某些文本 text 中可能以 “first second third” 形式出现的情况,其中 second 紧随 first 出现,third 紧随 second 出现。对于每种这样的情况,将第三个词 “third” 添加到答案中,并返回答案。
示例 1:
输入:text = “alice is a good girl she is a good student”, first = “a”, second = “good”
输出:[“girl”,”student”]
示例 2:
输入:text = “we will we will rock you”, first = “we”, second = “will”
输出:[“we”,”rock”]
来源:力扣(LeetCode)
链接:https://leetcode-cn.com/problems/occurrences-after-bigram
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代码
/**
* @param {string} text
* @param {string} first
* @param {string} second
* @return {string[]}
*/
var findOcurrences = function (text, first, second) {
const s = text.split(" ");
const ans = [];
// return s;
for (let i = 0; i < s.length - 2; i++) {
if (s[i] === first && s[i + 1] === second) {
ans.push(s[i + 2]);
}
}
return ans;
};