public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
//"600000000000000000000000000000000000000000000000000006";
//liczba podzielna przez 6 jak dzieli sie przez 2 i 3
Main.printPiramid(5);
System.out.println(Main.isDevidedBy6("138"));
System.out.println("devide 6" + Main.isDevidedBy6("60000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000061"));
Main.printL(6, 3, 2, 8);
System.out.println();
Main.printL(5,4,5,5);
System.out.println("Semi: " + Main.isSemiPrimeNumber(27));
System.out.println(Main.isPrimal(4));
}
static boolean isPrimal(int n){
if(n<2) {
return false;
}
for(int i=2;i*i<=n;i++) {
if(n%i==0) {
return false;
}
}
return true;
}
static boolean isSemiPrimeNumber(int n) {
for(int i=0;i<Math.sqrt(n);++i) {
if(Main.isPrimal(i) && n%i==0 && isPrimal(n/i) && i!=n/i) {
return true;
}
}
return false;
}
static boolean isDevidedBy6(String s) {
int sum=0;
for(int i=0;i<s.length();++i) {
try {
sum+=Character.getNumericValue(s.charAt(i));
}catch(NumberFormatException e) {
return false;
}
}
if(sum%3==0 && Character.getNumericValue(s.charAt(s.length()-1)) % 2 ==0) {
return true;
}
return false;
}
static void printPiramid(int n) {
for(int i=0;i<n;i++) {
for(int j=0;j<n-i;j++) {
System.out.print(" ");
}
for(int k=0;k<=i;k++) {
System.out.print("* ");
}
System.out.println();
}
}
static void printL(int wysokoscGorna, int wysokoscDolna, int szerokoscGorna, int szerokoscDolna) {
if(szerokoscGorna != szerokoscDolna) {
for(int i=0;i<wysokoscGorna;++i) {
for(int j=0;j<szerokoscGorna;++j) {
System.out.print("X");
}
System.out.println();
}
for(int i=0;i<wysokoscDolna;++i) {
for(int j=0;j<szerokoscDolna;++j) {
System.out.print("X");
}
System.out.println();
}
}else {
System.out.println("Nie można narysowac litery L.");
}
}
}
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