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- public class Tasks {
- public static void main(String[] args) {
- /* Task 1 */
- System.out.println("---------------------- Task 1 ----------------------");
- task1_method(4, 'x');
- System.out.println();
- /* Task 2 */
- System.out.println("---------------------- Task 2 ----------------------");
- int[][] task2_array = new int[5][5];
- for (int i = 0; i <= task2_array.length - 1 ; i++) {
- for (int j = 0; j <= task2_array[i].length - 1; j++) {
- task2_array[i][j] = j;
- }
- }
- isDiagonal(task2_array);
- System.out.println();
- /* Task 3 */
- System.out.println("---------------------- Task 3 ----------------------");
- String text = "qweqweqw";
- char[] task3_array = text.toCharArray();
- task3_method(task3_array);
- System.out.println();
- /* Task 4 */
- System.out.println("---------------------- Task 4 ----------------------");
- System.out.println(task4_method(5));
- System.out.println();
- /* Task 6 */
- System.out.println("---------------------- Task 6 ----------------------");
- String palindrom = "kajak";
- task6_method(palindrom);
- }
- static void task1_method(int colrow, int start) {
- char[] znaki = new char[2];
- znaki[0] = 'x';
- znaki[1] = 'o';
- int licznik = start;
- for (int i = 1; i <= colrow; i++) {
- for (int j = 1; j <= colrow; j++) {
- if (licznik == 0) { licznik = 1; } else { licznik = 0;}
- System.out.print(znaki[licznik]);
- }
- System.out.println();
- }
- }
- static void isDiagonal(int[][] task2_array) {
- boolean cond1 = true;
- for (int i = 0; i <= task2_array.length - 1 ; i++) {
- if ( task2_array.length == task2_array[i].length && cond1 == true ) {
- cond1 = true;
- } else {
- cond1 = false;
- }
- }
- }
- static void task3_method(char[] table) {
- StringBuilder a = new StringBuilder();
- a.append(table);
- System.out.println(a.toString());
- }
- static int task4_method(int i) {
- if (i <= 0) { return 1; } else { return i*task4_method(i-1); }
- }
- static boolean task6_method(String palindrom) {
- int x = (int)(palindrom.length() /2 );
- while(x >= 0) {
- if(palindrom.charAt(x) != palindrom.charAt(palindrom.length()-x-1)) return false;
- x--;
- }
- return true;
- }
- }
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