_748.java

package com.fishercoder.solutions.firstthousand;

public class _748 {

    public static class Solution1 {
        public String shortestCompletingWord(String licensePlate, String[] words) {
            int[] counts = new int[26];
            for (char c : licensePlate.toCharArray()) {
                if (Character.isAlphabetic(c)) {
                    counts[Character.toLowerCase(c) - 'a']++;
                }
            }
            String result = "";
            for (String word : words) {
                if (isComplete(word, counts)) {
                    if (result.equals("")) {
                        result = word;
                    } else if (word.length() < result.length()) {
                        result = word;
                    }
                }
            }
            return result;
        }

        private boolean isComplete(String word, int[] counts) {
            int[] tmp = counts.clone();
            for (char c : word.toCharArray()) {
                if (tmp[c - 'a'] > 0) {
                    tmp[c - 'a']--;
                }
            }
            for (int i : tmp) {
                if (i != 0) {
                    return false;
                }
            }
            return true;
        }
    }
}