Programming loopss

Question 1

What are the three main types of loops?

Answer 1

• For loop
• While loop
• do while loop

Question 2

What are the 2 types of loop situations?

Answer 2

• Indeterminate

- Determinate

Question 3

What is an Indeterminate loop situation?

Answer 3

• A situation where we don’t know in advance how many times we may have to repeat or iterate a loop body code.
• Usually a while or do while loop is used in this scenario

Question 4

What is a determinate loop situation?

Answer 4

• We know ahead of time exactly how many iterations our loop body code has to do.
• Usually a for or a counter controlled loop is used in this scenario

Question 5

What happens in a while loop?

Answer 5

• The loop continuation condition is checked (The brackets next to the while loop) before trying to run the loop body statement.
• You need to include some information in the loop body that will eventually cause the condition to be false so that we can exit the loop.

Question 6

What is a do- while loop?

Answer 6

• A do while loop will always run at least once before the condition is checked
• Often used as a data validation loop

Question 7

What is the difference between break and continue?

Answer 7

• The continue keyword will stop the current iteration of the loop whereas break will exit the loop completely

Question 8

What are the steps in creating a for loop?

Answer 8

1. ) Set initial conditions for the loop and create the loop control variable
2. ) Specify the conditions for the loop to continue. The brackets next to it aka the LCC
3. ) Arrange it so that the loop control variable is incremented after each iteration of the loop

Question 9

What is an array?

Answer 9

• A names set of contiguous memory cells

- Can be used to store both primitive and object data

Question 10

What indexing do arrays use?

Answer 10

• Arrays use zero based indexing. The first value in the array always starts at zero

Question 11

Can data types be mixed in the elements of an array?

Answer 11

• No

Question 12

The operator used in creating the array is the square brackets []. What is another name for this?

Answer 12

• Array Index Operator

Question 13

What is an array classified as in java

Answer 13

• Arrays are objects in Java

Question 14

Instantiation gives values to the array. Once created can the array size change?

Answer 14

• Array size is fixed and cant be changed once created

Question 15

Arrays are Homogeneous. What does this mean?

Answer 15

• Means they can only store one type of data