APCS 6

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what is the syntax of a while loop?

(probably should initialize some variables) while( boolean expression) { statements }

update action in a for statement

incrementing/decrementing the loop control variable

true/ false: ( ) are required

true

what is a nested loop?

a loop inside another loop

Boolean expression in a for statement

anything that evaluates true or false- testing the value of the loop control variable against a final value

what is difference between break statement and continue statement? (TEST Q)

break statements completely jump of the loop while a continue statement just skips the current iteration of the innermost loop.

for any loop to work correctly, 3 parts must be present (TEST Q)

counter initialization condition check counter update

true / false: you need a semicolon after the ( )

false

true or false: the indefinite loop and infinite loop are the same thing

false

true or false: the inner loops are DO NOT RESET every time the last statement is wrong and it restarts again at the first statement

false, it does RESET

true or false: it is not an infinite loop when there is NO COUNTER UPDATE

falso

the Java "for loop" is used to repeat a statement or a block of statements a _______________ number of times.

fixed

what is the syntax for the "for loop" statement?

for (initialization action; Boolean expression; update action) { statements; }

what are the 3 types of loops?

for loop, while loop, and for each loop.

what is the difference between a definite and indefinite loop? (TEST Q)

in a definite loop, the number of iterations is known, while in an indefinite loop the number of iterations is not known beforehand

initialization action in a for statement

is assigning a starting value to the loop control variable

each pass through a loop is called a/an...................

iteration

definite loops

number of iterations is known before we start the execution of the body of the loop- we know how many times it will repeat

indefinite loops

number of iterations is not known before

define continue statement

skips CURRENT ITERATION of innermost for or while loop

if the Boolean expression is false, then the loop is........

terminated

in a group of nested loops, which loop is executed the most number of times?

the innermost loop

what is the loop control variable?

the variable whose value determines whether another iteration is done

True or false: loop body is entirely skipped if boolean check is false the first time

true

true or false: each nested loop must have its own lcv

true

define break statement

used to jump out of the loop when specific condition occurs

when is a while statement used?

when there is a possibility that an entire loop body may skipped

when is "for loop" used?

when you know the exact # of iterations that occur


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