For Loops 102

Executes a complex loop structure that has many nested loops. This program will challenge your analytical skills in programming.

Download files: ForLoops102.java
Areas: Nested loops.

ForLoops102.java

1	import java.io.*;
2
3
4	/**
5	* A good for loop example.
6	*/
7	public class ForLoops102 {
8
9	public static void doSomething(int n) {
10	int count = 1;

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Question 1

What will be printed if doSomething(1) is called?

Question 2

Suppose that doSomething(7) is called and the first loop begins to execute for the first time (so that i is 1). How many iterations will the second loop make before i is changed again?

Question 3

Suppose that doSomething(13) is called and the first loop begins to execute for the first time (so that i is 1). How many times will line 22 be executed before i is changed again?

Question 4

How many times is the expression count += 5 executed when doSomething( (m+1) * m ) is called?

Question 5

How many nested for loops are there in the function doSomething(int n)?

Question 6

Look at each of the 4 for loops. Work out a formula for the number of times the loop body is executed before the loop terminates, for any value of n >= 2.

Question 7

Out of the four for loops, which loop will always make at most one iteration?

Question 8

Which for loop can be replaced by its loop body such that the function will perform the same calculations as before.