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| 1 | + |
| 2 | +import java.util.Random; |
| 3 | + |
| 4 | +public class Bucket_Sort |
| 5 | +{ |
| 6 | + static int[] sort(int[] sequence, int maxValue) |
| 7 | + { |
| 8 | + // Bucket Sort |
| 9 | + int[] Bucket = new int[maxValue + 1]; |
| 10 | + int[] sorted_sequence = new int[sequence.length]; |
| 11 | + |
| 12 | + for (int i = 0; i < sequence.length; i++) |
| 13 | + Bucket[sequence[i]]++; |
| 14 | + |
| 15 | + int outPos = 0; |
| 16 | + for (int i = 0; i < Bucket.length; i++) |
| 17 | + for (int j = 0; j < Bucket[i]; j++) |
| 18 | + sorted_sequence[outPos++] = i; |
| 19 | + |
| 20 | + return sorted_sequence; |
| 21 | + } |
| 22 | + |
| 23 | + static void printSequence(int[] sorted_sequence) |
| 24 | + { |
| 25 | + for (int i = 0; i < sorted_sequence.length; i++) |
| 26 | + System.out.print(sorted_sequence[i] + " "); |
| 27 | + } |
| 28 | + |
| 29 | + static int maxValue(int[] sequence) |
| 30 | + { |
| 31 | + int maxValue = 0; |
| 32 | + for (int i = 0; i < sequence.length; i++) |
| 33 | + if (sequence[i] > maxValue) |
| 34 | + maxValue = sequence[i]; |
| 35 | + return maxValue; |
| 36 | + } |
| 37 | + |
| 38 | + public static void main(String args[]) |
| 39 | + { |
| 40 | + System.out.println("Sorting of randomly generated numbers using BUCKET SORT"); |
| 41 | + Random random = new Random(); |
| 42 | + int N = 20; |
| 43 | + int[] sequence = new int[N]; |
| 44 | + |
| 45 | + for (int i = 0; i < N; i++) |
| 46 | + sequence[i] = Math.abs(random.nextInt(100)); |
| 47 | + |
| 48 | + int maxValue = maxValue(sequence); |
| 49 | + |
| 50 | + System.out.println("\nOriginal Sequence: "); |
| 51 | + printSequence(sequence); |
| 52 | + |
| 53 | + System.out.println("\nSorted Sequence: "); |
| 54 | + printSequence(sort(sequence, maxValue)); |
| 55 | + } |
| 56 | +} |
| 57 | + |
| 58 | +#Output: |
| 59 | + |
| 60 | +$ javac Bucket_Sort.java |
| 61 | +$ java Bucket_Sort |
| 62 | + |
| 63 | +Sorting of randomly generated numbers using BUCKET SORT |
| 64 | + |
| 65 | +Original Sequence: |
| 66 | +95 9 95 87 8 81 18 54 57 53 92 15 38 24 8 56 29 69 64 66 |
| 67 | +Sorted Sequence: |
| 68 | +8 8 9 15 18 24 29 38 53 54 56 57 64 66 69 81 87 92 95 95 |
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