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52 changes: 52 additions & 0 deletions Java/BucketSort.java
Original file line number Diff line number Diff line change
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import java.util.Random;

public class BucketSort {

static int[] bucketSort(int[] sequence, int maxValue) {
// Bucket Sort
int[] Bucket = new int[maxValue + 1];
int[] sortedSequence = new int[sequence.length];

for (int i = 0; i < sequence.length; i++)
Bucket[sequence[i]]++;

int outPos = 0;
for (int i = 0; i < Bucket.length; i++)
for (int j = 0; j < Bucket[i]; j++)
sortedSequence[outPos++] = i;

return sortedSequence;
}

static void printSequence(int[] sortedSequence) {
for (int i = 0; i < sortedSequence.length; i++)
System.out.print(sortedSequence[i] + " ");
}

static int maxValue(int[] sequence) {
int maxValue = 0;
for (int i = 0; i < sequence.length; i++)
if (sequence[i] > maxValue)
maxValue = sequence[i];
return maxValue;
}

public static void main(String args[]) {
System.out.println("Sorting of randomly generated numbers using BUCKET SORT");
Random random = new Random();
int N = 20;
int[] sequence = new int[N];

for (int i = 0; i < N; i++)
sequence[i] = Math.abs(random.nextInt(100));

int maxValue = maxValue(sequence);

System.out.println("\nOriginal Sequence: ");
printSequence(sequence);

System.out.println("\nSorted Sequence: ");
printSequence(bucketSort(sequence, maxValue));

}
}