[Solved] Adding a space after every other digit in java [closed]

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Try this:

String origStr = ...;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < origStr.length(); i++) {
  char ch = origStr.charAt(i);
  sb.append(ch);
  if (ch != ' ' && (i % 2 == 1)) {
    sb.append(' ');
  }
}
String result = sb.toString();

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solved Adding a space after every other digit in java [closed]