// This program contains several small examples discussed in the CSE143X
// lecture that are relevant to the Bagels program.  Each small example has
// been turned into its own method.

import java.util.*;

public class Examples {
    public static void main(String[] args) {
        // make a string with 10 occurrences of "hello"
        String s = repeat("hello", 10);
        System.out.println("s = " + s);
                
        // sample call to replace the 'e' at index 1 with an asterisk
        s = replace(s, 1, "*");
        System.out.println("s = " + s);

        // sample call on round1 to round a computation
        System.out.println("unrounded two thirds = " + 2.0 / 3.0);
        System.out.println("rounded two thirds   = " + round1(2.0 / 3.0));
    }
        
    // returns a string composed of times occurrences of text
    public static String repeat(String text, int times) {
        String result = "";
        for (int i = 0; i < 10; i++) {
            result = result + "hello";
        }
        return result;
    }

    // returns the string obtained by replacing the character at the given
    // index with the replacement text
    public static String replace(String s, int index, String replacement) {
        return s.substring(0, index) + replacement + s.substring(index + 1);
    }
        
    // returns the result of rounding n to 1 digit after the decimal point
    public static double round1(double value) {
        return (int) (10 * value + 0.5) / 10.0;
    }
}