for loops & while loops
Computers
University - Professional Development
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is the correct?
for (int i = 0; i < COUNT; i++)
{
}
for (int i = 0; i < COUNT; i++);
{
}
for (int i = 0; i < COUNT; i+)
for (int i = 0 i < COUNT i++)
{
}
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which will print "Hello Karel" 1000 times?
for (int i = 0; i < 100; i++)
{
System.out.println("Hello Karel");
}
for (int i = 0; i < 1000; i++)
{
System.out.println("Hello Karel");
}
for (int i = 0 i < 1000; i++)
System.out.println("Hello Karel");
}
for (int i = 0; i < 1000; i+)
{
System.out.println("Hello Karel");
}
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following will count down from 1 to 10 without error?
public class WhileLoop extends ConsoleProgram
{
public void run()
{
int i = 10;
while(i >= 0)
System.out.println(i);
i--;
}
}
public class WhileLoop extends ConsoleProgram
{
public void run()
{
int i = 10;
while(i >= 0)
{
System.out.print(i);
i--;
}
}
}
public class WhileLoop extends ConsoleProgram
{
public void run()
{
int i = 9;
while(i >= 0)
{
System.out.println(i);
i--;
}
}
}
public class WhileLoop extends ConsoleProgram
{
public void run()
{
int i = 10;
while(i >= 0)
{
System.out.println(i);
i--;
}
}
}
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pick the for loop which duplicates this while loop:
int x = 0;
while ( x < 500 )
{
System.out.println( x );
x = x + 5;
}
for ( int x = 5; x <= 500; x+=5 )
System.out.println( x );
for ( int x = 0; x < 500; x+=5 )
System.out.println( x );
for ( float x = 0.0; x < 500.0; x += 5.0 )
System.out.println( x );
for ( int x = 500; x >= 0; x-=5 )
System.out.println( x );
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the following print?
for ( int j = 0; j < 5; j++ )
{
for ( int k = 0; k < 10 ; k++ )
System.out.print( "*" );
System.out.println( );
}
**********
**********
**********
**********
**********
**********
**********
**********
**********
**********
**********
**********
**********
**********
**********
*****
*****
*****
*****
*****
*****
*****
*****
*****
*****
*
*
*
*
*
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the output of the following code fragment?
for ( int count = 0; count <= 20; count+=2 )
System.out.print( count + " " );
System.out.println( );
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
0 2 4 6 8 10
0 2 4 6 8 10 12 14 16 18
0 2 4 6 8 10 12 14 16 18 20
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
var i = 0;
while (i < 3)
{
println("Hello There");
i++;
}
What does the code output?
Hello There
Hello There
Hello There
Hello There
Hello There
Hello There
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