31 lines
866 B
Java
31 lines
866 B
Java
|
//: net/mindview/util/Range.java
|
||
|
|
// Array creation methods that can be used without
|
||
|
|
// qualifiers, using Java SE5 static imports:
|
||
|
|
package net.mindview.util;
|
||
|
|
|
||
|
|
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 a 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;
|
||
|
|
}
|
||
|
|
} ///:~
|