84 lines
1.5 KiB
Java
84 lines
1.5 KiB
Java
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// streams/RandomGenerators.java
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import java.util.*;
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import java.util.stream.*;
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public class RandomGenerators {
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public static <T> void show(Stream<T> stream) {
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stream
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.limit(4)
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.forEach(System.out::println);
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System.out.println("++++++++");
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}
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public static void main(String[] args) {
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Random rand = new Random(47);
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show(rand.ints().boxed());
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show(rand.longs().boxed());
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show(rand.doubles().boxed());
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// Control the lower and upper bounds:
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show(rand.ints(10, 20).boxed());
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show(rand.longs(50, 100).boxed());
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show(rand.doubles(20, 30).boxed());
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// Control the stream size:
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show(rand.ints(2).boxed());
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show(rand.longs(2).boxed());
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show(rand.doubles(2).boxed());
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// Control the stream size and bounds:
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show(rand.ints(3, 3, 9).boxed());
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show(rand.longs(3, 12, 22).boxed());
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show(rand.doubles(3, 11.5, 12.3).boxed());
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}
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}
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/* Output:
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-1172028779
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1717241110
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-2014573909
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229403722
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++++++++
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2955289354441303771
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3476817843704654257
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-8917117694134521474
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4941259272818818752
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++++++++
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0.2613610344283964
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0.0508673570556899
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0.8037155449603999
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0.7620665811558285
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++++++++
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16
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10
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11
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12
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++++++++
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65
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99
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54
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58
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++++++++
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29.86777681078574
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24.83968447804611
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20.09247112332014
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24.046793846338723
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++++++++
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1169976606
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1947946283
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++++++++
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2970202997824602425
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-2325326920272830366
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++++++++
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0.7024254510631527
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0.6648552384607359
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++++++++
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6
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7
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7
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++++++++
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17
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12
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20
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++++++++
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12.27872414236691
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11.732085449736195
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12.196509449817267
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++++++++
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*/
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