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  1. public class Main {
  2. public static void main(String[] args) {
  3. for (int i = 1; i <= 5; i++)
  4. System.out.print(String.format("%s ", String.valueOf(i)).repeat(i));
  5. }
  6. }
Success #stdin #stdout 0.12s 55940KB
stdin
Standard input is empty
stdout
1 2 2 3 3 3 4 4 4 4 5 5 5 5 5