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Diffstat (limited to 'challenge-234/packy-anderson/java/Ch2.java')
| -rw-r--r-- | challenge-234/packy-anderson/java/Ch2.java | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/challenge-234/packy-anderson/java/Ch2.java b/challenge-234/packy-anderson/java/Ch2.java new file mode 100644 index 0000000000..ec53d291f7 --- /dev/null +++ b/challenge-234/packy-anderson/java/Ch2.java @@ -0,0 +1,48 @@ +import java.util.ArrayList; +import java.util.Arrays; +import java.util.stream.Collectors; + +public class Ch2 { + public static ArrayList<int[]> findTriplets(int[] ints) { + ArrayList<int[]> solutions = new ArrayList<int[]>(); + for (int i = 0; i < ints.length - 2; i++) { + for (int j = i + 1; j < ints.length - 1; j++) { + for (int k = j + 1; k < ints.length; k++) { + if (ints[i] != ints[j] && + ints[j] != ints[k] && + ints[i] != ints[k]) { + int triplet[] = {i, j, k}; + solutions.add( triplet ); + } + } + } + } + return solutions; + } + + public static void solution(int[] ints) { + String joined = Arrays.stream(ints) + .mapToObj(String::valueOf) + .collect(Collectors.joining(", ")); + System.out.println("Input: @ints = (" + joined + ")"); + ArrayList<int[]> solutions = findTriplets(ints); + System.out.println(String.format("Output: %1$d", solutions.size())); + for (int[] solution : solutions) { + System.out.println(String.format( + "(%1$d, %2$d, %3$d) because %4$d != %5$d != %6$d", + solution[0], solution[1], solution[2], + ints[solution[0]], ints[solution[1]], ints[solution[2]] + )); + } + } + public static void main(String[] args) { + System.out.println("Example 1:"); + solution(new int[] {4, 4, 2, 4, 3}); + + System.out.println("\nExample 2:"); + solution(new int[] {1, 1, 1, 1, 1}); + + System.out.println("\nExample 3:"); + solution(new int[] {4, 7, 1, 10, 7, 4, 1, 1}); + } +}
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