To display the pattern. 0 12 345 6789 (Qbasic Code)

To display the pattern.
0
12
345
6789

• CLS
  n = 0
  FOR i = 1 TO 4
      FOR j = 1 TO i
          PRINT n;
          n = n + 1
      NEXT j
      PRINT
  NEXT i
  END

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