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  1. class Main {
  2.     public static void main(String[] args) {
  3.         int n = 4;
  4.         test(n);
  5.     }
  6.  
  7.     static void test(int max) {
  8.         String str = "";
  9.         for (int i = 1; i <= max; i++) {
  10.             str = str + i + str;
  11.             System.out.println(str);
  12.         }
  13.     }
  14. }
Success #stdin #stdout 0.15s 54436KB
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Standard input is empty
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1
121
1213121
121312141213121
https://ideone.com/MO4s4P
language:
Java (HotSpot 12)
created:
1 year ago
visibility:
public

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