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  1. class Ideone {
  2.     public static void main(String[] args) {
  3.         final int valueForJ = 37;
  4.         System.out.println(replaceJWith("5+2+5+2 --j *2*7+3", valueForJ));
  5.         System.out.println(replaceJWith("5+2+5+2 j-- *2*7+3", valueForJ));
  6.         System.out.println(replaceJWith("5+2+5+2 ++j *2*7+3", valueForJ));
  7.         System.out.println(replaceJWith("5+2+5+2 j++ *2*7+3", valueForJ));
  8.     }
  9.  
  10.     public static String replaceJWith(String s, int valueForJ) {
  11.         s = s.replaceAll("j(?:[+]{2}|[-]{2})", Integer.toString(valueForJ));
  12.         s = s.replaceAll("[+]{2}j", Integer.toString(valueForJ + 1));
  13.         return s.replaceAll("[-]{2}j", Integer.toString(valueForJ - 1));
  14.     }
  15. }
Success #stdin #stdout 0.07s 33524KB
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stdin
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Standard input is empty
stdout
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5+2+5+2 36 *2*7+3
5+2+5+2 37 *2*7+3
5+2+5+2 38 *2*7+3
5+2+5+2 37 *2*7+3
https://ideone.com/mX4z6l
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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