Generating Unique Random Numbers in an Array using Loop

Question

So the question is to develop a [5][5] table, each containing unique numbers from 1-100 (no duplicates)

so here\'s what I came up with:

#inc         


        

Answer 1

Just create array of boolean of size 100 : bool numberUsed[100]. Then in cycle:

1.Generate random number r
2.If numberUsed[r] is true, dont add that r anywhere and continue in loop
3.numberUsed[r] = true

Note that you need to use WHILE cycle with this approach, not FOR cycle.