Java – print arrays in random order

See English answers > random shuffling of an array 27

Example:

int [] myArray = {5,4,3,2,1};

When printing, the result may be:

3 2 1 4 5

or

4 3 2 5 1

Solution

You should read and write a fisher Yates shuffle It's easy and efficient In fact, you can logically partition the array into "shuffled" and "unwashed" – then repeatedly select a random element from the unwashed part and exchange it with the first element in the unwashed part to form part of the shuffle part

Alternatively, create a list < integer > instead, and use collections shuffle. Unfortunately, there is no corresponding array, but the Java type system does not do well in making arrays or primitives universal:（

(I assume you know how to print, and this is a very difficult aspect for you.)