comefrom: <gouthampradhan>string_MonotoneIncreasingDigits_1.java
code: public int monotoneIncreasingDigits(int N) {
      String s = String.valueOf(N);
      if (s.length() == 1) return N;
      int p = -1;
      int prev = N % 10;
      for (int i = s.length() - 2; i >= 0; i--) {
        int curr = Integer.parseInt(String.valueOf(s.charAt(i)));
        if (curr > prev) {
          p = i;
          prev = curr - 1;
        } else {
          prev = curr;
        }
      }
      if (p == -1) return N;
      StringBuilder result = new StringBuilder();
      for (int i = 0; i < s.length(); i++) {
        if (i == p) {
          int pV = Integer.parseInt(String.valueOf(s.charAt(i)));
          result.append(pV - 1);
          break;
        }
        result.append(String.valueOf(s.charAt(i)));
      }
      for (int i = p + 1; i < s.length(); i++) {
        result.append("9");
      }
      return Integer.parseInt(result.toString());
    }
masked: public int sample_funcname ( int var_0 ) {
    String var_3 = String . valueOf ( var_0 ) ;
    if ( var_3 . length ( ) == 1 ) return var_0 ;
    int var_6 = - 1 ;
    int var_8 = var_0 % 10 ;
    for ( int var_10 = var_3 . length ( ) - 2 ;
    var_10 >= 0 ;
    var_10 -- ) {
      int var_15 = Integer . parseInt ( String . valueOf ( var_3 . charAt ( var_10 ) ) ) ;
      if ( var_15 > var_8 ) {
        var_6 = var_10 ;
        var_8 = var_15 - 1 ;
      }
      else {
        var_8 = var_15 ;
      }
    }
    if ( var_6 == - 1 ) return var_0 ;
    StringBuilder var_17 = new StringBuilder ( ) ;
    for ( int var_10 = 0 ;
    var_10 < var_3 . length ( ) ;
    var_10 ++ ) {
      if ( var_10 == var_6 ) {
        int var_18 = Integer . parseInt ( String . valueOf ( var_3 . charAt ( var_10 ) ) ) ;
        var_17 . append ( var_18 - 1 ) ;
        break ;
      }
      var_17 . append ( String . valueOf ( var_3 . charAt ( var_10 ) ) ) ;
    }
    for ( int var_10 = var_6 + 1 ;
    var_10 < var_3 . length ( ) ;
    var_10 ++ ) {
      var_17 . append ( "9" ) ;
    }
    return Integer . parseInt ( var_17 . toString ( ) ) ;
  }
  