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Main.java
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Main.java
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package com.company;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.List;
import java.util.Queue;
public class Main {
public static void main(String[] args) {
// write your code here
}
public int numMatchingSubseq(String s, String[] words) {
Queue<StringBuilder>[] record = new ArrayDeque[26];
for (int i = 0; i < 26; i++)
record[i] = new ArrayDeque<>();
int res = 0;
for (String word : words)
record[word.charAt(0) - 'a'].offer(new StringBuilder(word));
for (Character l : s.toCharArray()) {
Queue<StringBuilder> candidates = record[l - 'a'];
int size = candidates.size();
for (int i = 0; i < size; i++) {
StringBuilder word = candidates.poll();
word.deleteCharAt(0);
if (word.length() == 0)
res++;
else
record[word.charAt(0) - 'a'].offer(word);
}
}
return res;
}
}