28 lines
753 B
Java
28 lines
753 B
Java
// arrays/ParallelPrefix1.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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import java.util.*;
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import onjava.*;
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import static onjava.ArrayShow.*;
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public class ParallelPrefix1 {
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public static void main(String[] args) {
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int[] nums = new Count.int_().array(10);
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show(nums);
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System.out.println(Arrays.stream(nums)
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.reduce(Integer::sum).getAsInt());
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Arrays.parallelPrefix(nums, Integer::sum);
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show(nums);
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System.out.println(Arrays.stream(
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new Count.int_().array(6))
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.reduce(Integer::sum).getAsInt());
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}
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}
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/* Output:
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[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
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45
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[0, 1, 3, 6, 10, 15, 21, 28, 36, 45]
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15
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*/
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