C4
Streda
package sk.paz1a.practicals.task04;
import sk.upjs.jpaz2.Turtle;
public class StringTurtle extends Turtle {
public int countChar(String s, char c) {
int counter = 0;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == c) {
counter++;
}
}
return counter;
}
public String obratRetazec(String s) {
// Specialne osetrime pripad, kedy je referencia na zadany retazec null
if (s == null)
return null;
// Referencia na medzivysledkovy retazec
// String vysledok = ""; je to skratka pre
// String vysledok = new String("");
String vysledok = "";
// Strategia: postupne budujeme vysledny retazec tak, ze nan prilepujeme
// znaky retazca s od konca, t.j. zaciname indexom LENGTH-1 a koncime s
// indexom 0
for (int i = s.length() - 1; i >= 0; i--) {
// Vytvorime novy objekt triedy String prilepenim znaku na indexe i
// na koniec retazca referencovaneho z premennej vysledok.
// Referenciu na novovytvoreny retazec ulozime do premennej
// vysledok
vysledok = vysledok + s.charAt(i);
}
// Vratime vysledok
return vysledok;
}
public boolean isPalindrome1(String s) {
String sObrateny = obratRetazec(s);
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) != sObrateny.charAt(i)) {
return false;
}
}
return true;
}
public boolean isPalindrome2(String s) {
String sObrateny = obratRetazec(s);
if (s.equals(sObrateny)) {
return true;
}
return false;
}
public boolean isPalindrome3(String s) {
for (int i = 0; i < s.length() / 2; i++) {
if (s.charAt(i) != s.charAt(s.length() - i - 1)) {
return false;
}
}
return true;
}
public boolean containsDoubleSpace(String s) {
for (int i = 1; i < s.length(); i++) {
if (s.charAt(i - 1) == s.charAt(i) && s.charAt(i) == ' ') {
return true;
}
}
return false;
}
public boolean containsDoubleSpace2(String s) {
boolean checker = false;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == ' ') {
if (checker == true) {
return true;
}
checker = true;
} else {
checker = false;
}
}
return false;
}
public String unicharString(char c, int n) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < n; i++) {
sb.append(c);
}
return (sb.toString());
}
public boolean isUnicharString1(String s) {
for (int i = 0; i < s.length() - 1; i++) {
if (s.charAt(i) != s.charAt(i + 1)) {
return false;
}
}
return true;
}
public boolean isUnicharString2(String s) {
if (s == null) {
return false;
}
if (s.length() == 0) {
return false;
}
char first = s.charAt(0);
for (int i = 1; i < s.length(); i++) {
if (s.charAt(i) != first) {
return false;
}
}
return true;
}
public String duplicateChars(String s) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
sb.append(c);
sb.append(c);
}
return (sb.toString());
}
public String removeExtraSpaces(String s) {
StringBuilder sb = new StringBuilder();
boolean checker = false;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == ' ') {
checker = true;
if (checker == false) {
sb.append(s.charAt(i));
}
} else {
sb.append(s.charAt(i));
}
}
String sNew = sb.toString();
sNew.trim();
return sNew;
}
public int countWords(String s) {
if (s == null) {
return 0;
}
s = " " + s;
int pocetSlov = 0;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) != ' ' && s.charAt(i - 1) == ' ') {
pocetSlov++;
}
}
return pocetSlov;
}
import sk.upjs.jpaz2.Turtle;
public class StringTurtle extends Turtle {
public int countChar(String s, char c) {
int counter = 0;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == c) {
counter++;
}
}
return counter;
}
public String obratRetazec(String s) {
// Specialne osetrime pripad, kedy je referencia na zadany retazec null
if (s == null)
return null;
// Referencia na medzivysledkovy retazec
// String vysledok = ""; je to skratka pre
// String vysledok = new String("");
String vysledok = "";
// Strategia: postupne budujeme vysledny retazec tak, ze nan prilepujeme
// znaky retazca s od konca, t.j. zaciname indexom LENGTH-1 a koncime s
// indexom 0
for (int i = s.length() - 1; i >= 0; i--) {
// Vytvorime novy objekt triedy String prilepenim znaku na indexe i
// na koniec retazca referencovaneho z premennej vysledok.
// Referenciu na novovytvoreny retazec ulozime do premennej
// vysledok
vysledok = vysledok + s.charAt(i);
}
// Vratime vysledok
return vysledok;
}
public boolean isPalindrome1(String s) {
String sObrateny = obratRetazec(s);
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) != sObrateny.charAt(i)) {
return false;
}
}
return true;
}
public boolean isPalindrome2(String s) {
String sObrateny = obratRetazec(s);
if (s.equals(sObrateny)) {
return true;
}
return false;
}
public boolean isPalindrome3(String s) {
for (int i = 0; i < s.length() / 2; i++) {
if (s.charAt(i) != s.charAt(s.length() - i - 1)) {
return false;
}
}
return true;
}
public boolean containsDoubleSpace(String s) {
for (int i = 1; i < s.length(); i++) {
if (s.charAt(i - 1) == s.charAt(i) && s.charAt(i) == ' ') {
return true;
}
}
return false;
}
public boolean containsDoubleSpace2(String s) {
boolean checker = false;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == ' ') {
if (checker == true) {
return true;
}
checker = true;
} else {
checker = false;
}
}
return false;
}
public String unicharString(char c, int n) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < n; i++) {
sb.append(c);
}
return (sb.toString());
}
public boolean isUnicharString1(String s) {
for (int i = 0; i < s.length() - 1; i++) {
if (s.charAt(i) != s.charAt(i + 1)) {
return false;
}
}
return true;
}
public boolean isUnicharString2(String s) {
if (s == null) {
return false;
}
if (s.length() == 0) {
return false;
}
char first = s.charAt(0);
for (int i = 1; i < s.length(); i++) {
if (s.charAt(i) != first) {
return false;
}
}
return true;
}
public String duplicateChars(String s) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
sb.append(c);
sb.append(c);
}
return (sb.toString());
}
public String removeExtraSpaces(String s) {
StringBuilder sb = new StringBuilder();
boolean checker = false;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == ' ') {
checker = true;
if (checker == false) {
sb.append(s.charAt(i));
}
} else {
sb.append(s.charAt(i));
}
}
String sNew = sb.toString();
sNew.trim();
return sNew;
}
public int countWords(String s) {
if (s == null) {
return 0;
}
s = " " + s;
int pocetSlov = 0;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) != ' ' && s.charAt(i - 1) == ' ') {
pocetSlov++;
}
}
return pocetSlov;
}
package sk.paz1a.practicals.task04;
import sk.upjs.jpaz2.*;
public class Launcher {
public static void main(String[] args) {
WinPane sandbox = new WinPane();
SmartTurtle franklin = new SmartTurtle();
sandbox.add(franklin);
ObjectInspector oi = new ObjectInspector();
oi.inspect(franklin);
oi.inspect(sandbox);
StringTurtle jano = new StringTurtle();
String s = "jaano";
System.out.println(jano.countChar(s,'a'));
String s2 = "abcba";
System.out.println(jano.isPalindrome3(s2));
System.out.println(jano.containsDoubleSpace(s2));
}
}
import sk.upjs.jpaz2.*;
public class Launcher {
public static void main(String[] args) {
WinPane sandbox = new WinPane();
SmartTurtle franklin = new SmartTurtle();
sandbox.add(franklin);
ObjectInspector oi = new ObjectInspector();
oi.inspect(franklin);
oi.inspect(sandbox);
StringTurtle jano = new StringTurtle();
String s = "jaano";
System.out.println(jano.countChar(s,'a'));
String s2 = "abcba";
System.out.println(jano.isPalindrome3(s2));
System.out.println(jano.containsDoubleSpace(s2));
}
}
Štvrtok
package sk.paz1a.practicals.task04;
import sk.upjs.jpaz2.Turtle;
public class StringTurtle extends Turtle {
public int countChar(String s, char c) {
int counter = 0;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == c) {
counter++;
}
}
return counter;
}
public String obratRetazec(String s) {
// Specialne osetrime pripad, kedy je referencia na zadany retazec null
if (s == null)
return null;
// Referencia na medzivysledkovy retazec
// String vysledok = ""; je to skratka pre
// String vysledok = new String("");
String vysledok = "";
// Strategia: postupne budujeme vysledny retazec tak, ze nan prilepujeme
// znaky retazca s od konca, t.j. zaciname indexom LENGTH-1 a koncime s
// indexom 0
for (int i = s.length() - 1; i >= 0; i--) {
// Vytvorime novy objekt triedy String prilepenim znaku na indexe i
// na koniec retazca referencovaneho z premennej vysledok.
// Referenciu na novovytvoreny retazec ulozime do premennej
// vysledok
vysledok = vysledok + s.charAt(i);
}
// Vratime vysledok
return vysledok;
}
public boolean isPalindrome1(String s) {
String sObrateny = obratRetazec(s);
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) != sObrateny.charAt(i)) {
return false;
}
}
return true;
}
public boolean isPalindrome2(String s) {
String sObrateny = obratRetazec(s);
if (s.equals(sObrateny)) {
return true;
}
return false;
}
public boolean isPalindrome3(String s) {
for (int i = 0; i < s.length() / 2; i++) {
if (s.charAt(i) != s.charAt(s.length() - i - 1)) {
return false;
}
}
return true;
}
public boolean containsDoubleSpace(String s) {
for (int i = 1; i < s.length(); i++) {
if (s.charAt(i - 1) == s.charAt(i) && s.charAt(i) == ' ') {
return true;
}
}
return false;
}
public boolean containsDoubleSpace2(String s) {
boolean checker = false;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == ' ') {
if (checker == true) {
return true;
}
checker = true;
} else {
checker = false;
}
}
return false;
}
public String unicharString(char c, int n) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < n; i++) {
sb.append(c);
}
return (sb.toString());
}
public boolean isUnicharString1(String s) {
for (int i = 0; i < s.length() - 1; i++) {
if (s.charAt(i) != s.charAt(i + 1)) {
return false;
}
}
return true;
}
public boolean isUnicharString2(String s) {
if (s == null) {
return false;
}
if (s.length() == 0) {
return false;
}
char first = s.charAt(0);
for (int i = 1; i < s.length(); i++) {
if (s.charAt(i) != first) {
return false;
}
}
return true;
}
public String duplicateChars(String s) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
sb.append(c);
sb.append(c);
}
return (sb.toString());
}
public String removeExtraSpaces(String s) {
StringBuilder sb = new StringBuilder();
boolean checker = false;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == ' ') {
if (checker == false) {
sb.append(s.charAt(i));
}
checker = true;
} else {
sb.append(s.charAt(i));
checker=false;
}
}
String sNew = sb.toString();
sNew.trim();
return sNew;
}
public int countWords(String s) {
if (s == null) {
return 0;
}
s = " " + s;
int pocetSlov = 0;
for (int i = 1; i < s.length(); i++) {
if (s.charAt(i) != ' ' && s.charAt(i - 1) == ' ') {
pocetSlov++;
}
}
return pocetSlov;
}
}
import sk.upjs.jpaz2.Turtle;
public class StringTurtle extends Turtle {
public int countChar(String s, char c) {
int counter = 0;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == c) {
counter++;
}
}
return counter;
}
public String obratRetazec(String s) {
// Specialne osetrime pripad, kedy je referencia na zadany retazec null
if (s == null)
return null;
// Referencia na medzivysledkovy retazec
// String vysledok = ""; je to skratka pre
// String vysledok = new String("");
String vysledok = "";
// Strategia: postupne budujeme vysledny retazec tak, ze nan prilepujeme
// znaky retazca s od konca, t.j. zaciname indexom LENGTH-1 a koncime s
// indexom 0
for (int i = s.length() - 1; i >= 0; i--) {
// Vytvorime novy objekt triedy String prilepenim znaku na indexe i
// na koniec retazca referencovaneho z premennej vysledok.
// Referenciu na novovytvoreny retazec ulozime do premennej
// vysledok
vysledok = vysledok + s.charAt(i);
}
// Vratime vysledok
return vysledok;
}
public boolean isPalindrome1(String s) {
String sObrateny = obratRetazec(s);
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) != sObrateny.charAt(i)) {
return false;
}
}
return true;
}
public boolean isPalindrome2(String s) {
String sObrateny = obratRetazec(s);
if (s.equals(sObrateny)) {
return true;
}
return false;
}
public boolean isPalindrome3(String s) {
for (int i = 0; i < s.length() / 2; i++) {
if (s.charAt(i) != s.charAt(s.length() - i - 1)) {
return false;
}
}
return true;
}
public boolean containsDoubleSpace(String s) {
for (int i = 1; i < s.length(); i++) {
if (s.charAt(i - 1) == s.charAt(i) && s.charAt(i) == ' ') {
return true;
}
}
return false;
}
public boolean containsDoubleSpace2(String s) {
boolean checker = false;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == ' ') {
if (checker == true) {
return true;
}
checker = true;
} else {
checker = false;
}
}
return false;
}
public String unicharString(char c, int n) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < n; i++) {
sb.append(c);
}
return (sb.toString());
}
public boolean isUnicharString1(String s) {
for (int i = 0; i < s.length() - 1; i++) {
if (s.charAt(i) != s.charAt(i + 1)) {
return false;
}
}
return true;
}
public boolean isUnicharString2(String s) {
if (s == null) {
return false;
}
if (s.length() == 0) {
return false;
}
char first = s.charAt(0);
for (int i = 1; i < s.length(); i++) {
if (s.charAt(i) != first) {
return false;
}
}
return true;
}
public String duplicateChars(String s) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
sb.append(c);
sb.append(c);
}
return (sb.toString());
}
public String removeExtraSpaces(String s) {
StringBuilder sb = new StringBuilder();
boolean checker = false;
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == ' ') {
if (checker == false) {
sb.append(s.charAt(i));
}
checker = true;
} else {
sb.append(s.charAt(i));
checker=false;
}
}
String sNew = sb.toString();
sNew.trim();
return sNew;
}
public int countWords(String s) {
if (s == null) {
return 0;
}
s = " " + s;
int pocetSlov = 0;
for (int i = 1; i < s.length(); i++) {
if (s.charAt(i) != ' ' && s.charAt(i - 1) == ' ') {
pocetSlov++;
}
}
return pocetSlov;
}
}
package sk.paz1a.practicals.task04;
import java.awt.Color;
import java.awt.event.MouseEvent;
import sk.upjs.jpaz2.Turtle;
import sk.upjs.jpaz2.WinPane;
public class GridPane extends WinPane {
private int counter;
public void drawGrid() {
int x = 0;
int y = 0;
int height = this.getHeight();
int width = this.getWidth();
Turtle kreslic = new Turtle();
this.add(kreslic);
while (x < width) {
kreslic.setPosition(x, 0);
kreslic.moveTo(x, height);
x = x + 50;
}
while (y < height) {
kreslic.setPosition(0, y);
kreslic.moveTo(width, y);
y = y + 50;
}
this.remove(kreslic);
}
public void drawDot(int column, int row, Color dotColor) {
Turtle kreslic = new Turtle();
this.add(kreslic);
kreslic.setFillColor(dotColor);
int x = 25 + column * 50;
int y = 25 + row * 50;
kreslic.setPosition(x, y);
kreslic.dot(20);
this.remove(kreslic);
}
protected void onMouseClicked(int x, int y, MouseEvent detail) {
if (counter % 2 == 0) {
drawDot(x / 50, y / 50, Color.RED);
} else {
drawDot(x / 50, y / 50, Color.BLUE);
}
counter++;
}
}
import java.awt.Color;
import java.awt.event.MouseEvent;
import sk.upjs.jpaz2.Turtle;
import sk.upjs.jpaz2.WinPane;
public class GridPane extends WinPane {
private int counter;
public void drawGrid() {
int x = 0;
int y = 0;
int height = this.getHeight();
int width = this.getWidth();
Turtle kreslic = new Turtle();
this.add(kreslic);
while (x < width) {
kreslic.setPosition(x, 0);
kreslic.moveTo(x, height);
x = x + 50;
}
while (y < height) {
kreslic.setPosition(0, y);
kreslic.moveTo(width, y);
y = y + 50;
}
this.remove(kreslic);
}
public void drawDot(int column, int row, Color dotColor) {
Turtle kreslic = new Turtle();
this.add(kreslic);
kreslic.setFillColor(dotColor);
int x = 25 + column * 50;
int y = 25 + row * 50;
kreslic.setPosition(x, y);
kreslic.dot(20);
this.remove(kreslic);
}
protected void onMouseClicked(int x, int y, MouseEvent detail) {
if (counter % 2 == 0) {
drawDot(x / 50, y / 50, Color.RED);
} else {
drawDot(x / 50, y / 50, Color.BLUE);
}
counter++;
}
}
package sk.paz1a.practicals.task04;
import java.awt.Color;
import sk.upjs.jpaz2.*;
public class Launcher {
public static void main(String[] args) {
WinPane sandbox = new WinPane();
SmartTurtle franklin = new SmartTurtle();
sandbox.add(franklin);
ObjectInspector oi = new ObjectInspector();
oi.inspect(franklin);
oi.inspect(sandbox);
StringTurtle jano = new StringTurtle();
String s = "jaano";
System.out.println(jano.countChar(s,'a'));
String s2 = "abcba";
System.out.println(jano.isPalindrome3(s2));
System.out.println(jano.containsDoubleSpace(s2));
GridPane mriezka = new GridPane();
oi.inspect(mriezka);
mriezka.drawGrid();
}
}
import java.awt.Color;
import sk.upjs.jpaz2.*;
public class Launcher {
public static void main(String[] args) {
WinPane sandbox = new WinPane();
SmartTurtle franklin = new SmartTurtle();
sandbox.add(franklin);
ObjectInspector oi = new ObjectInspector();
oi.inspect(franklin);
oi.inspect(sandbox);
StringTurtle jano = new StringTurtle();
String s = "jaano";
System.out.println(jano.countChar(s,'a'));
String s2 = "abcba";
System.out.println(jano.isPalindrome3(s2));
System.out.println(jano.containsDoubleSpace(s2));
GridPane mriezka = new GridPane();
oi.inspect(mriezka);
mriezka.drawGrid();
}
}