38 lines
1.0 KiB
Java
38 lines
1.0 KiB
Java
package wtf.beatrice.hidekobot.utils;
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import java.util.Random;
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public class RandomUtil
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{
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private static final Random random = new Random();
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/**
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* Returns a random integer picked in a range.
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*
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* @param min the minimum value (inclusive)
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* @param max the maximum value (inclusive)
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* @return a random number in range [min; max]
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*/
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public static int getRandomNumber(int min, int max)
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{
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if(min == max) return min; // dumbass
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if(min > max) // swap em
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{
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min = min - max;
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max = min + max;
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min = max - min;
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}
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// find our range of randomness (eg. 5 -> 8 = 4), add +1 since we want to be inclusive at both sides
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int difference = (max - min) + 1;
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// find a number between 0 and our range (eg. 5 -> 8 = 0 -> 3)
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int randomTemp = random.nextInt(difference);
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// add the minimum value, so we are sure to be in the original range (0->5, 1->6, 2->7, 3->8)
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return randomTemp + min;
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}
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}
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