COMP PROG MIDTERM

42問 • 1年前

問題一覧

are used to execute a block of statements multiple times. It means it executes the same code multiple times so it saves code.

Looping Control Statements

It executes the code until condition is false

For loop

It is used when number of iterations are known.

For loop

for (initialization; condition; increment/decrement) {statements;}

Syntax

is also known as initialize expression

initialization

is also known as logical expression

condition

is also known as update expression

increment/decrement

is called the body of the for loop

statemt

are structures that control repeated executions of a block of statements.

Loops

Java programming language provides a powerful control structure called ____

loop

may not execute the body of the loop at all if the condition is initially false.

While loop

performing actions and testing for the stopping condition.

Both while and do while loops

uses a counter to control the loop.

counter controlled while loop

Body of the loop - must contain a statement that changes the value of the counter variable.

true

is a special value that marks the end of the input data.

Sentinel

✓ The sentinel must be similar, yet different, from all the data items.

true

uses to control the while loop. The while loop continues to execute until the sentinel is read.

sentinel-controlled while loop

simplifies the writing of a counter-controlled while loop. is counter-controlled, meaning that they are normally used whenever the number of iterations is known in advance.

for loop

is a a loop that doesn't contain any executable statement,

empty loop

is a loop that runs an infinite number of times.

infinite loop

are loops that repeat forever without stopping

Infinite loop

might not execute at all,

The body of the while and for loops

always executes at least once.

the body of a do...while loop

are two statements that allow us to further control flow within and out of loops.

Break and continue

causes execution to immediately jump out of the current loop, and proceed with the code following the loop.

break statement

causes the remainder of the current iteration of the loop to be skipped, and for execution to recommence with the next iteration.

continue statement

update statement in the body of the loop might not execute.

continue statement executes in a while or do ... while loop,

, the update statement is the next statement executed.

continue statement executes in a for loop

is evaluated before executing the body of the loop.

In a while or for loop

is evaluated after executing the body of the loop.

In a do… while loop

In a while/for loop are called

Pretest loops

In a do/while loop are called

post test loops

is a loop within a loop, an inner loop within the body of an outer one.

nested loop

is an abstract data type.

File

used to store related information is known as a File.

named location

to create a new file we can use____ it returns true if a new file is created; false if the file already exists in the specified location

createNewFile()

In order to write data into a file, we will use the

Scanner class

In order to write data into a file, we will use the We need to close the stream using the close() method to retrieve the allocated resources

FileWriter class and its write() method together.

executes till the conditions becomes false

While loop

It will execute the loop body only if the condition is true

Do-while loop

Called exit controlled

While for

called entry controlled

While loop

Data Structure (history)

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問題一覧

are used to execute a block of statements multiple times. It means it executes the same code multiple times so it saves code.

Looping Control Statements

It executes the code until condition is false

For loop

It is used when number of iterations are known.

For loop

for (initialization; condition; increment/decrement) {statements;}

Syntax

is also known as initialize expression

initialization

is also known as logical expression

condition

is also known as update expression

increment/decrement

is called the body of the for loop

statemt

are structures that control repeated executions of a block of statements.

Loops

Java programming language provides a powerful control structure called ____

loop

may not execute the body of the loop at all if the condition is initially false.

While loop

performing actions and testing for the stopping condition.

Both while and do while loops

uses a counter to control the loop.

counter controlled while loop

Body of the loop - must contain a statement that changes the value of the counter variable.

true

is a special value that marks the end of the input data.

Sentinel

✓ The sentinel must be similar, yet different, from all the data items.

true

uses to control the while loop. The while loop continues to execute until the sentinel is read.

sentinel-controlled while loop

simplifies the writing of a counter-controlled while loop. is counter-controlled, meaning that they are normally used whenever the number of iterations is known in advance.

for loop

is a a loop that doesn't contain any executable statement,

empty loop

is a loop that runs an infinite number of times.

infinite loop

are loops that repeat forever without stopping

Infinite loop

might not execute at all,

The body of the while and for loops

always executes at least once.

the body of a do...while loop

are two statements that allow us to further control flow within and out of loops.

Break and continue

causes execution to immediately jump out of the current loop, and proceed with the code following the loop.

break statement

causes the remainder of the current iteration of the loop to be skipped, and for execution to recommence with the next iteration.

continue statement

update statement in the body of the loop might not execute.

continue statement executes in a while or do ... while loop,

, the update statement is the next statement executed.

continue statement executes in a for loop

is evaluated before executing the body of the loop.

In a while or for loop

is evaluated after executing the body of the loop.

In a do… while loop

In a while/for loop are called

Pretest loops

In a do/while loop are called

post test loops

is a loop within a loop, an inner loop within the body of an outer one.

nested loop

is an abstract data type.

File

used to store related information is known as a File.

named location

to create a new file we can use____ it returns true if a new file is created; false if the file already exists in the specified location

createNewFile()

In order to write data into a file, we will use the

Scanner class

In order to write data into a file, we will use the We need to close the stream using the close() method to retrieve the allocated resources

FileWriter class and its write() method together.

executes till the conditions becomes false

While loop

It will execute the loop body only if the condition is true

Do-while loop

Called exit controlled

While for

called entry controlled

While loop