int n = 10;

while (n<20) {

System.out.println("тaкт " + n);

n++;

int n = 20;

while (n<=20) {

System.out.println("тaкт " + n);

n++;

int n = 10;

while (n>0) {

System.out.println("тaкт " + n);

n--;

int n = 10;

while (n>0){

System.out.println("тaкт " + n);

n++;