Java Loops

A loop is a way to (choose ALL the correct options)

• make life simpler for the programmer

• make life simpler for the user

• hang up the computer infinitely

• efficiently repeat instructions

• efficiently work with data structures such as files and arrays

When you know exactly how many times the loop needs to repeat you should use a

• repeat loop

• for loop

• while loop

• try case loop

What is the minimum number of times that ANY for loop will repeat?

• 0

• 1

• 2

• 10

What is the minimum number of times that ANY while loop will repeat?

• 0

• 1

• 2

• 10

The best loop to use when working with an array is

• for

• for-each

• while

• do while

A for-each loop is initialised with

• a counter, a comparison and an increment value

• an array

• a set of conditions

A while loop is initialised with

• a counter, a comparison and an increment value

• an array

• a set of conditions

A for loop is initialised with

• a counter, a comparison and an increment value

• an array

• a set of conditions

What does the following code do?

for (int i = 0; i < 50; i++) {

System.out.println(i);

}

• Print out the numbers from 1 - 50

• Print out the numbers from 0 - 49

• Print out 1 and 50

• Print out 0 and 49

How many times will this loop repeat?

for (int i = 0; i <= 10; i = i + 2) {

System.out.println(i);

}

• 0

• 10

• 5

• 6

• 8