Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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What is the output of the following code segment?
for ( int j = 10; j > 5; j-- )
{
System.out.print( j +
" " );
}
System.out.println();
a. | 10 11 12 13 14
15 | b. | 9 8 7 6 5 4 3 2 1
0 | c. | 10 9 8 7 6
5 | d. | 10 9 8 7
6 |
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2.
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What is the number of times that the loop below will display
“HELLO”assuming that b>a?
for(x=a; x<=b;
x++)
System.out.println(“HELLO”);
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3.
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Which of the following represents the proper structure of a for loop?
a. | for (initialize counter; update counter) {
statement;
statement;
. .
.;
} | b. | for (initialize counter; test counter; update counter)
{
statement;
statement;
. .
.;
} | c. | for (update counter; initialize counter; test counter )
{
statement;
statement;
. .
.;
} | d. | for (test counter; initialize counter; update counter)
{
statement;
statement;
. .
.;
} |
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4.
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What will be the output of the following while statement?
int x=10;
while(x>0)
{
System.out.println(x + “ “);
x-=3;
}
a. | 10 7 4 1 | c. | 10 8 6 4
2 0 | b. | 10 9 8 7 6 5 4 3 2
1 | d. | 10 8 6
4 2 |
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5.
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Consider the following two code segments: | Segment 1 | Segment 2 | int x = 0;
while(x<10)
{
x++;
System.out.println(x);
} | for(int y=0; y<10;
y++)
{
System.out.println(y);
} | | |
Which of
the following statements is true? a. | Both segments produce the same output | b. | Both segments do NOT produce the same
output | c. | The segments would produce the same output if the statements inside the while loop
were reversed | d. | Both b and c are correct |
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6.
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Which of the following code snippets would display the square roots of 25, 20,
15, and 10?
a. | int number = 25;
while (number >
10){
System.out.println ("The square root of " +
number + " is " + Math.sqrt
(number));
number -= 5;
} | b. | int number = 25;
while (number <= 10){
System.out.println ("The square root of " +
number + " is " + Math.sqrt
(number));
number--;
} | c. | int number = 25;
while (number >= 10){
System.out.println ("The square root of " +
number + " is " + Math.sqrt
(number));
number -= 5;
} | d. | int number = 25;
while (number >= 10){
System.out.println ("The square root of " +
number + " is " + Math.sqrt
(number));
number--;
} |
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7.
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Consider the following code segment: int x = 2, y =
0;
while(x>y)
{
x--;
y++;
}
System.out.println(x -
y);
What is the output of the System.out.println
statement?
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8.
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Consider the following code segment, which will be used to determine the number
of years required for a $10,000 investment to grow to $25,000 at a simple interest rate of
3%.. int years = 0;
double balance = 10000,
interest;
while(balance<25000)
{
years++;
interest = balance * .03;
<BLANK>
}
System.out.println(“Years = “ + years);
What is the
following statements should be placed where <BLANK> is so that the code works as
intended? a. | balance = interest; | b. | balance++; | c. | balance +=
interest; | d. | balance *= interest; |
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9.
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Consider the following code segment. for(int k=0; k<10; k++)
{
for(int j=0; j<5;
j++)
System.out.print(“*”);
}How many asterisks (stars) will be
displayed when this code segment is executed?
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10.
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Which code segment will correctly print the following?
x
xx
xxx
xxxx
a. | for(int x=1; x<=4; x++)
{
for(int y=1; y<=4; y++)
System.out.print(x);
System.out.println();
} | b. | for(int x=1; x<=4; x++)
{
for(int y=1; y<=x;
y++)
System.out.print(x);
System.out.println();
} | c. | for(int x=1; x<=4; x++)
{
for(int y=1; y<=4;
y++)
System.out.print(“x”);
System.out.println();
} | d. | for(int x=1; x<=4; x++)
{
for(int y=1; y<=x;
y++)
System.out.print(“x”);
System.out.println();
} |
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