< > BotCompany Repo | #1002109 // isNonNegativeInteger

JavaX fragment (include)

static boolean isNonNegativeInteger(String s) {
  int n = l(s);
  if (n == 0) ret false;
  int i = 0;
  while (i < n) {
    char c = s.charAt(i);
    if (c < '0' || c > '9') ret false;
    ++i;
  }
  ret true;
}

Author comment

Began life as a copy of #1000567

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