96 lines
3.7 KiB
Java
96 lines
3.7 KiB
Java
import java.util.*;
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import java.io.*;
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public class Alphabet {
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// initialising a String containing all the letters of the alphabet and turning it into a character array (to save typing)
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public static String alphabetString = "abcdefghijklmnopqrstuvwxyz";
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public static char alphabet[] = alphabetString.toCharArray();
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// declaring a Scanner object to use to scan in the user input
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public static Scanner scanner = new Scanner(System.in);
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public static void main(String args[]) {
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System.out.println("Type the alphabet in order (lowercase).");
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// prompting the user to enter 'f' or 'b' and scanning in the input (only scanning the 0th character of input)
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System.out.println("Forwards or Backwards? (f/b): ");
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char fb = scanner.next().charAt(0);
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// switch statement to determine forward or backwards, or exit
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switch(fb) {
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case 'f':
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System.out.println("Time taken: " + forwards() + "s");
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break;
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case 'b':
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System.out.println("Time taken: " + backwards() + "s");
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break;
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default:
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System.out.println("Invalid input!. You must enter either 'f' or 'b' to start.");
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System.exit(1);
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}
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}
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// method for going through the alphabet forwards
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private static long forwards() {
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// getting the time when the user started
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long start = System.currentTimeMillis();
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// looping for each of the 26 letters
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int i = 0;
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while (i < 26) {
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// checking if the scanned in character was the correct one
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// if the it was not, then i will not be incremented, and it will loop again on the same letter.
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if (scanner.next().charAt(0) == alphabet[i]) {
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if (i == 25) { // checking if it's the last letter, and if so, printing a special message
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System.out.println("Correct! Well done!");
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i++;
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}
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else { // otherwise, prompting the user to enter the next letter
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System.out.println("[" + alphabet[i] + ": Correct! Now type '" + alphabet[++i] + "']"); // i gets incremented
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}
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}
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}
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// calculating the total time taken
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long total = System.currentTimeMillis() - start;
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// returning the total time taken in seconds (by dividing by 1000)
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return total / 1000;
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}
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// method for going through the alphabet backwards
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private static long backwards() {
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// getting the time when the user started
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long start = System.currentTimeMillis();
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// looping for each of the 26 letters
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int i = 25;
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while (i >= 0) {
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// checking if the scanned in character was the correct one
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// if the it was not, then i will not be decremented, and it will loop again on the same letter.
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if (scanner.next().charAt(0) == alphabet[i]) {
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if (i == 0) { // checking if it's the last letter, and if so, printing a special message
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System.out.println("Correct! Well done!");
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i--;
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}
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else { // otherwise, prompting the user to enter the next letter
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System.out.println("[" + alphabet[i] + ": Correct! Now type '" + alphabet[--i] + "']"); // i gets decremented
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}
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}
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}
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// calculating the total time taken
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long total = System.currentTimeMillis() - start;
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// returning the total time taken in seconds (by dividing by 1000)
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return total / 1000;
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}
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}
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