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  1. import java.util.Map;
  2. import java.util.Objects;
  3. import java.util.function.Function;
  4. import java.util.stream.Collectors;
  5. import java.util.stream.IntStream;
  6. import java.util.stream.Stream;
  7.  
  8. class Scratch {
  9.  
  10.   public static void main(String[] args) {
  11.     if (areAnagrams("aab", "aac")) {
  12.       System.out.println("anagram");
  13.     } else {
  14.       System.out.println("not anagram");
  15.     }
  16.   }
  17.  
  18.   private static boolean areAnagrams(String s, String t) {
  19.     return Objects.equals(
  20.         calculateCharacterFrequencyMap(s),
  21.         calculateCharacterFrequencyMap(t));
  22.   }
  23.  
  24.   private static Map<Character, Integer> calculateCharacterFrequencyMap(String s) {
  25.     return toCharStream(s)
  26.         .collect(Collectors.toMap(
  27.             Function.identity(),
  28.             c -> 1,
  29.             Integer::sum));
  30.   }
  31.  
  32.   private static Stream<Character> toCharStream(String s) {
  33.     final char[] chars = s.toCharArray();
  34.     return IntStream.range(0, chars.length)
  35.         .mapToObj(i -> chars[i]);
  36.   }
  37. }
Success #stdin #stdout 0.08s 48864KB
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not anagram
https://ideone.com/rRwItc
language:
Java (HotSpot 12)
created:
3 years ago
visibility:
public

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