Java Random Double Array from -50 to 50-CodePudding

I need to populate an array with random numbers from -50 to 50 and need to use Math.random(). Here is my current code:

double[] randomNums = new double[5];

for (int i = 0; i < randomNums.length; i  ) {
    randomNums[i] = 100 * Math.random() - 50;
}
for (double i: randomNums) {
    System.out.println(i   ',');
}

Output:

-5.836717454677796,
44.07635593282988,
23.650145270722884,
93.00810678750743,
54.0536237451922

Why is this going above 50?

CodePudding user response：

You are adding the value of the char ,, which has value 44 to each double. You can test this using:

System.out.println(0   ',');

Output: 44

To fix this you can simply remove the ','