// onjava/Range.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// Array creation methods that can be used without
// qualifiers, using static imports:
package onjava;

public class Range {
 // Produce a sequence [0..n)
 public static int[] range(int n) {
 int[] result = new int[n];
 for(int i = 0; i < n; i++)
 result[i] = i;
 return result;
 }
 // Produce a sequence [start..end)
 public static int[] range(int start, int end) {
 int sz = end - start;
 int[] result = new int[sz];
 for(int i = 0; i < sz; i++)
 result[i] = start + i;
 return result;
 }
 // Produce sequence [start..end) incrementing by step
 public static
 int[] range(int start, int end, int step) {
 int sz = (end - start)/step;
 int[] result = new int[sz];
 for(int i = 0; i < sz; i++)
 result[i] = start + (i * step);
 return result;
 }
}