Question

Class Main {

static void printPowers(int howMany, int nrRows) {

int n=1;

while(n<=nrRows) {

int power = 1;

while(power <= howMany) {

System.out.printf("%d ", (int) Math.pow(n,power));

power++;

}

System.out.println();

n++;

}

}



public static void main(String[] args) {

printPowers(3,5);

}

}
1. Rewrite your method printPowers from 7B to use a for loop instead of a while loop.

2. Rewrite your method printPowers from 7B to use a do-while loop instead of a while loop.

Answer 1

class Main {

static void printPowers(int howMany, int nrRows) {

for(int n=1; n<=nrRows; n++) {

for(int power = 1; power<=howMany; power++) {

System.out.printf("%d ", (int) Math.pow(n, power));

}

System.out.println();

}

}

public static void main(String[] args) {

printPowers(3, 5);

}

}

class Main {

static void printPowers(int howMany, int nrRows) {

int n = 1;

do {

int power = 1;

do {

System.out.printf("%d ", (int) Math.pow(n, power));

power++;

} while (power <= howMany);

System.out.println();

n++;

} while (n <= nrRows);

}

public static void main(String[] args) {

printPowers(3, 5);

}

}

Step-by-step explanation:

The for loop gives the cleanest, shortest code.