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BucketSort.java
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41 lines (33 loc) · 859 Bytes
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package sorting;
import java.util.Arrays;
/**
* Sort numbers using Bucket Sort.
*
* Link: http://www.geeksforgeeks.org/bucket-sort-2/
*
* @author shivam.maharshi
*/
public class BucketSort {
public static void sort(int[] a, int maxVal) {
int[] bucket = new int[maxVal + 1];
for (int i = 0; i < bucket.length; i++) {
bucket[i] = 0;
}
for (int i = 0; i < a.length; i++) {
bucket[a[i]]++;
}
int outPos = 0;
for (int i = 0; i < bucket.length; i++) {
for (int j = 0; j < bucket[i]; j++) {
a[outPos++] = i;
}
}
}
public static void main(String[] args) {
int maxVal = 15;
int[] data = { 5, 3, 0, 2, 4, 1, 0, 15, 2, 3, 1, 14 };
System.out.println("Before: " + Arrays.toString(data));
sort(data, maxVal);
System.out.println("After: " + Arrays.toString(data));
}
}