Random number from 1 - 25 in java sequence

Question

So I am trying to generate a random number, but I can't use the Java random function because I need the numbers to be in the range of 1-25. What is the easiest aka most efficient way of doing this? If possible, an explanation would be great!

Bohemian · Accepted Answer · 2013-09-05T23:35:15.290

3

int random = (int)(Math.random() * 25 + 1);

or

int random = new Random.nextInt(24) + 1;

edited Sep 05 '13 at 23:35

answered Sep 05 '13 at 23:25

Bohemian

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I would use Random#nextInt instead. Floating point math scares me. – Thilo Sep 05 '13 at 23:28

score 1 · Answer 2 · answered Sep 05 '13 at 23:31

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I prefer to use the Java Random Class.

import java.util.Random;

And then generate the random nuber like this - assuming you want an integer:

Random gen = new Random();
int r = gen.nextInt(25) + 1;

answered Sep 05 '13 at 23:31

finn

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score 0 · Answer 3 · answered Sep 05 '13 at 23:33

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Random numbers between 1 and 25 (1-25)

Random.nextInt(24) + 1

answered Sep 05 '13 at 23:33

user2693979

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That won't ever return 25. – Thilo Sep 06 '13 at 04:37

Random number from 1 - 25 in java sequence

3 Answers3