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//: arrays/IceCream.java

package arrays; /* Added by Eclipse.py */

// Returning arrays from methods.

import java.util.*;

public class IceCream {

private static Random rand = new Random(47);

static final String[] FLAVORS = {

"Chocolate", "Strawberry", "Vanilla Fudge Swirl",

"Mint Chip", "Mocha Almond Fudge", "Rum Raisin",

"Praline Cream", "Mud Pie"

};

public static String[] flavorSet(int n) {

if(n > FLAVORS.length)

throw new IllegalArgumentException("Set too big");

String[] results = new String[n];

boolean[] picked = new boolean[FLAVORS.length];

for(int i = 0; i < n; i++) {

int t;

do

t = rand.nextInt(FLAVORS.length);

while(picked[t]);

results[i] = FLAVORS[t];

picked[t] = true;

}

return results;

}

public static void main(String[] args) {

for(int i = 0; i < 7; i++)

System.out.println(Arrays.toString(flavorSet(3)));

}

} /* Output:

[Rum Raisin, Mint Chip, Mocha Almond Fudge]

[Chocolate, Strawberry, Mocha Almond Fudge]

[Strawberry, Mint Chip, Mocha Almond Fudge]

[Rum Raisin, Vanilla Fudge Swirl, Mud Pie]

[Vanilla Fudge Swirl, Chocolate, Mocha Almond Fudge]

[Praline Cream, Strawberry, Mocha Almond Fudge]

[Mocha Almond Fudge, Strawberry, Mint Chip]

*///:~