Occurrences After Bigram

就是按照题意做呗

class Solution {
    public String[] findOcurrences(String text, String first, String second) {
        String[] strings = text.split(" ");
        List<String> res = new ArrayList<String>();
        String t = first+second;
        for(int i = 0 ; i < strings.length; i++) {
            if(i + 2 < strings.length && t.equals(strings[i]+strings[i+1])){
                res.add(strings[i+2]);
                i+=1;
            }
        }
        String[] s = new String[res.size()];
        for(int i = 0 ; i < res.size(); i++){
            s[i] = res.get(i);
        }
        return s;
    }
}