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BucketSort.java
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40 lines (33 loc) · 999 Bytes
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import java.util.ArrayList;
import java.util.Collections;
public class BucketSort {
public void bucketSort(float[] arr, int n) {
if (n <= 0)
return;
@SuppressWarnings("unchecked")
ArrayList<Float>[] bucket = new ArrayList[n];
for (int i = 0; i < n; i++)
bucket[i] = new ArrayList<Float>();
for (int i = 0; i < n; i++) {
int bucketIndex = (int) arr[i] * n;
bucket[bucketIndex].add(arr[i]);
}
for (int i = 0; i < n; i++) {
Collections.sort((bucket[i]));
}
int index = 0;
for (int i = 0; i < n; i++) {
for (int j = 0, size = bucket[i].size(); j < size; j++) {
arr[index++] = bucket[i].get(j);
}
}
}
public static void main(String[] args) {
BucketSort b = new BucketSort();
float[] arr = { (float) 0.42, (float) 0.32, (float) 0.33, (float) 0.52, (float) 0.37, (float) 0.47,
(float) 0.51 };
b.bucketSort(arr, 7);
for (float i : arr)
System.out.print(i + " ");
}
}