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(This is from Review Exercise R4.1 at the end of Chapter 4 of Java for Everyone.) Assume variables SimpleWriter out and int n are already declared in each case. Write a separate while loop for each of the following tasks:Print all squares less than n. For example, if n is 100, print 0 1 4 9 16 25 36 49 64 81.Print all positive numbers that are divisible by 10 and less than n. For example, if n is 100, print 10 20 30 40 50 60 70 80 90.Print all powers of two less than n. For example, if n is 100, print 1 2 4 8 16 32 64.

Question

(This is from Review Exercise R4.1 at the end of Chapter 4 of Java for Everyone.) Assume variables SimpleWriter out and int n are already declared in each case. Write a separate while loop for each of the following tasks:Print all squares less than n. For example, if n is 100, print 0 1 4 9 16 25 36 49 64 81.Print all positive numbers that are divisible by 10 and less than n. For example, if n is 100, print 10 20 30 40 50 60 70 80 90.Print all powers of two less than n. For example, if n is 100, print 1 2 4 8 16 32 64.

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Solution

Sure, here are the step-by-step instructions for each task:

  1. Print all squares less than n:
  • Initialize a variable i to 0.
  • While i squared is less than n, do the following:
    • Print i squared.
    • Increment i by 1.

Here's the code:

int i = 0;
while (i * i < n) {
    out.print(i * i + " ");
    i++;
}
  1. Print all positive numbers that are divisible by 10 and less than n:
  • Initialize a variable i to 10.
  • While i is less than n, do the following:
    • Print i.
    • Increment i by 10.

Here's the code:

int i = 10;
while (i < n) {
    out.print(i + " ");
    i += 10;
}
  1. Print all powers of two less than n:
  • Initialize a variable i to 1.
  • While i is less than n, do the following:
    • Print i.
    • Multiply i by 2.

Here's the code:

int i = 1;
while (i < n) {
    out.print(i + " ");
    i *= 2;
}

This problem has been solved

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