FirstSaturday/WriteLoops.java

package FirstSaturday;

import com.sun.org.apache.xpath.internal.SourceTree;

import java.awt.SystemTray;
import java.util.concurrent.ThreadLocalRandom;
import java.util.function.Supplier;

/**
 * Writeloops get you thinking about how to do different things with loops.
 *
 * @author anonymous coward
 * @version -0.3
 * 
 */
public class WriteLoops {

    private static final int _3 = 3;

    public int oneToFive() {
        int w = 0;

        // Write a FOR loop that counts from 1 to 5.
        for (int i = 0; i < 5; i++){
            // calling
            w = w + 1;
            // each time through the loop
        }
        // this will tell the test how many times the loop executed.
        return w;
    }

    public int oneToTen() {
        int w = 0;
        for (int i = 0; i < 10; i++){
            // Write a FOR loop that counts from 1 to 10.
            // calling
            w = w + 1;
            // each time through the loop
        }
        return w;
    }

    public int startAtTwentyOne() {
        int w = 0;

        for (int i = 21; i <= 31; i++){
            // Write a FOR loop that makes 10 iterations, start at 21.
            // calling
            w = w + 1;
            // each time through the loop
        }
        return w;
    }

    public int countDown() {
        int w = 0;

        for (int i = 100; i > 0; i--){
            // Write a FOR loop that counts down from 100 to 0.
            // calling
            w = w + 1;
            // each time through the loop
        }
        return w;
    }

    public int byTwoTo32() {
        int w = 0;

        for (int i = 0; i <= 32; i = i + 2){
            // Write a FOR loop from 0 to 32 by 2s.
            // calling
            w = w + 1;
        }
        // each time through the loop
        return w;
    }

    public int countDownFrom5000() {
        int w = 0;

        for (int i = 1; i < 5001; i = i + 11){
            // Write a FOR loop from 1 to less than 5001 by 11s.
            // calling
            w = w + 1;
            // each time through the loop

        }
        return w;
    }

    public int nestedFors() {
        int w = 0;

        for (int i = 0; i < 20; i++){
            // Write a nested FOR loop(s), where one counts from
            // 0 to less than 20 and the inner one counts from 0 to 4
            // calling
            for (int j = 0; j < 5; j++){
                w = w + 1;
            }
            // each time through the inner loop
        }
        return w;
    }

    public int helloZipCode() {
        int w = 0;

        for (int i = 5; i <= 105; i++){
            // Write a FOR loop that counts from 5 to 105. Put an IF
            // statement inside the loop that checks the
            // loop index counter and if it’s greater than 51,
            // prints “Hello Zipcode” instead of the statement w = w + 1;

            System.out.println(w);

            // calling
            if (i > 51){
                System.out.println("Hello Zipcode");
            } else {
                w = w + 1;
            }
            // each time through the inner loop
        }
        return w;
    }

    public void simpleLoops() {
        int i = 0;

        // sample while loop
        while (i <= 5) {
            System.out.println("Eww.");
            i = i + 1;
        }

        // sample do...while loop
        i = 8;
        do {
            System.out.println("Eww.");
            i = i - 1;
        } while (i > 0);
        // what's the primary difference between them?!?
    }

    // Write a WHILE loop that checks “gpsCurrentLocation()”
    // and if that is not equal to “Home” then and it calls “driveSomeMore()”.
    // After the loop is done, print “Honey, I’m Home!”
    public int driveHome() {
        int w = 0;

        gpsCurrentLocation();
        // you need to use a .equals for two Strings.

        while (gpsCurrentLocation().equals("Not Home")){
            driveSomeMore();

            // calling
            w = w + 1;
            // each time through the inner loop
        }
        return w;
    }

    // Getting harder...
    // First declare and set “highestScore” to 236. Then set “currentScore” to
    // “gameNextScore()”. Then write a WHILE loop that checks "runningScore"
    // is less than “highestScore” and if it is, adds “currentScore” to
    // "runningScore"
    // and then sets “currentScore” to “gameNextScore()”
    public int checkGameScore() {
        int w = 0;
        int highestScore = 236;
        int currentScore = gameNextScore();
        int runningScore = 0;

        // do your while loop here
        while (runningScore < highestScore) {
            runningScore += currentScore;
            // calling

            if (runningScore < highestScore){
                w = w + 1;
            }
            // each time through the inner loop
        }
        return w; // >= 3;
    }

    // Rewrite the previous WHILE loop as a DO..WHILE loop.
    // Notice how the “runningScore” variable usage is different.
    public boolean checkGameScoreDoWhile() {
        int w = 0;
        int highestScore = 236;
        int currentScore = gameNextScore();
        int runningScore = 0;

        // do your while loop here
        do {
            runningScore += currentScore;
            w = w + 1;
            if (runningScore < highestScore){

            }

        } while (runningScore < highestScore);

        // calling

        // each time through the inner loop

        return w >= 3;
    }

    // Write a WHILE loop that checks “serverIsRunning()” and if true
    // calls “waitFor(5)” After the loop, write an IF and check “serverIsRunning()”
    // is false, and if so, call “sendEmergencyText(“Help!”, adminPhoneNumber)”
    // and also calls “tryServerRestart()”
    public int checkServerStatus() {
        int w = 0;
        String adminPhoneNumber = "+1 202 456 1111";

        while(serverIsRunning()){
            waitFor(5);
            // calling
            if (serverIsRunning() == false){
                sendEmergencyText("Help!", adminPhoneNumber);
                tryServerRestart("Help!", adminPhoneNumber);
            }
            w = w + 1;
            // each time through the inner loop
        }
        return w;
    }

    // Declare an “int” i. Set i to 7.
    // Write a WHILE loop that checks “i” is less than 50,
    // and if it is, add 7 to “i”
    public int loop50by7() {
        int w = 0;
        int i = 7;

        while (i < 50){
            i += 7;
            w = w + 1;
        }
        // calling
        // each time through the inner loop

        return w;
    }

    int[] threes_array = { 3, 6, 9, 12, 15, 18, 21 };

    // Foo is method that add the first 7 factors of three together and prints
    // out the sum of them all.
    public int foo() {
        int w = 0;
        // this is an array of ints. it is of length 7 (from 0 -> 6)
        int sumOfThrees = 0;

        // this is a so called Enhanced for loop
        for (int index : threes_array) {
            sumOfThrees = sumOfThrees + threes_array[index];
            // calling
            w = w + 1;
            // each time through the inner loop
        }
        System.out.print("The Sum is ");
        System.out.println(sumOfThrees);

        return w;
    }

    // Ponder this: can all FOR loops be rewritten as WHILE loops?
    // rewrite the loop inside of "foo()" as a standard for loop
    // with 'i' as its index variable.
    public int rewriteFooAsFor() {
        int w = 0;
        int sumOfThrees = 0;

        for (int i = 0; i < threes_array.length; i++){
            // calling
            sumOfThrees = threes_array[i];
            
            w = w + 1;

            // each time through the inner loop
        }

        System.out.print("The Sum is ");
        System.out.println(sumOfThrees);

        return w;
    }

    // Ponder this: can all WHILE loops be rewritten as FOR loops?
    // rewrite the loop inside of "foo()" as a 'while' loop
    public int rewriteFooAsWhile() {
        int w = 0;
        int sumOfThrees = 0;
        int i = 0;

        while (i < threes_array.length){
        // calling
        sumOfThrees = threes_array[i];
            i++;
            w = w + 1;
        }
        // each time through the inner loop

        System.out.print("The Sum is ");
        System.out.println(sumOfThrees);

        return w;
    }

    // Declare a boolean “yardNeedsMowed” and initialize to true.
    // Write WHILE loop that checks for “isSummer()”.
    // inside the loop, write an IF that checks “yardNeedsMowed” and if true calls
    // “yellAtJuniorToMowLawn()”
    // After loop, call
    // “sendJuniorBackToSchool()” with an argument that decribes the day junior goes
    // back.
    public int manageYardAndJunior() {
        int w = 0;
        boolean onTime = true;
        boolean yardNeedsMowed = true;
        
        while (isSummer()){
            w = w + 1;
            if (yardNeedsMowed){
                yellAtJuniorToMowLawn();
                
            }
        }

        // ADD YOUR CODE here.

        // be sure to call
        
        // each time inside the loop
        sendJuniorBackToSchool("September 12");
        return w;
    }

    String voteTallies[] = { "Lincoln", "Washington", "Adams", "Lincoln", "Washington", "Adams", "Lincoln",
            "Washington", "Adams", "Lincoln", "Washington", "Adams", "Roosevelt" };

    // Given an array voteTallies[], write a FOR loop that prints out each value in
    // the array.
    public int tallyVote1() {
        int w = 0;
        int numberOfVotes = voteTallies.length;

        for (int i = 0; i < numberOfVotes; i++){
        // calling
        System.out.println(voteTallies[i]);
        w = w + 1;
        // each time through the inner loop

    }
        return w;
    }

    // Given an array voteTallies[], write a WHILE loop that prints out each value
    // in the array. You should declare and use an index “idx” to keep track of
    // where you are.
    public int tallyVote2() {
        int w = 0;
        int numberOfVotes = voteTallies.length;
        int idx = 0;

        while(idx < voteTallies.length){
            System.out.println(voteTallies[idx]);
            idx++;
        // calling
        w = w + 1;
        // each time through the inner loop
    }
        return w;
    }

    /**
     * CONGRATS, you've written all the code. Does it all pass their tests?!?
     * 
     * 
     * If not, why not? :-)
     * 
     * 
     */

    /**
     * IGNORE the CODER behind the CURTAIN. These are the support routines to make
     * all the examples interesting.
     */
    // instance variables - replace the example below with your own
    private int x;

    /**
     * Constructor for objects of class WriteLoops
     */
    public WriteLoops() {
        // initialise instance variables
        x = 0;
    }

    private int gps = 0;

    private String gpsCurrentLocation() {
        if (this.gps > 5) {
            return "Home";
        }
        return "Not Home";
    }

    private void driveSomeMore() {
        this.gps += 1;
    }

    private int scr = 31;

    private int gameNextScore() {
        return this.scr = this.scr + ThreadLocalRandom.current().nextInt(20, 99 + 1);
    }

    private void yellAtJuniorToMowLawn() {
        /* dammit, mow the yard */}

    private void sendJuniorBackToSchool(String timeForSchool) {
        if (!timeForSchool.equalsIgnoreCase("First Day of School")) {
            throw new IllegalArgumentException();
        }
        /* dammit, mow the yard */}

    // private Supplier<Boolean> isSummer = () -> {
    //     int i = 0;
    //     return Supplier<Boolean> () -> {
    //         i = i + 1;
    //         return (i >= 3);
    //     };
    // };
    private int summer = 0;
    private boolean isSummer() {
        if (summer == 3) {
            return true;
        }
        summer++;
        return false;
    }

    private void sendEmergencyText(String mesg, String phone) {
    }

    private void tryServerRestart(String mesg, String phone) {
    }

    int serverStatus = 5;

    private boolean serverIsRunning() {
        return (serverStatus < 20);
    }

    private void waitFor(int interval) {
        serverStatus += interval;
    }

}