package algs12;

import stdlib.*;
public class XStrings {
  public static boolean isPalindrome (String s) {
    int N = s.length ();
    for (int i = 0; i < N / 2; i++)
      if (s.charAt (i) != s.charAt (N - 1 - i)) return false;
    return true;
  }

  public static boolean isSorted (String[] a) {
    for (int i = 1; i < a.length; i++) {
      if (a[i - 1].compareTo (a[i]) > 0) return false;
    }
    return true;
  }

  public static void printBaseAndExtension (String s) {
    // extract file name and extension from a command-line argument
    int dot = s.lastIndexOf (".");
    String base = s.substring (0, dot);
    String extension = s.substring (dot + 1, s.length ());
    StdOut.format ("base: %s\nextension: %s\n", base, extension);
  }

  public static void printLinesThatContain (String query) {
    // print all lines in standard input that contain a string specified on the command line
    while (!StdIn.isEmpty ()) {
      String s = StdIn.readLine ();
      if (s.contains (query)) StdOut.println (s);
    }
  }

  public static void printSplit () {
    // create an array of the strings on StdIn delimited by whitespace
    String input = StdIn.readAll ();
    String[] words = input.split ("\\s+");
    for (int i = 0; i < words.length; i++) {
      StdOut.println (words[i]);
    }
  }

  public static void main (String[] args) {
    //printBaseAndExtension ("the/place/for/pig.dog.cat");
    //StdIn.fromFile ("data/tale.txt");  printLinesThatContain ("children");
    StdIn.fromFile ("data/tinyTale.txt"); printSplit ();
  }
}