Practice Problems
1) What will be the output from the following code:
char [] letters={'a','b','c','d'};
letters[2]=letters[1]
System.out.println(letters[1]);
2) Given:
int array[ ]={9,5,8,14,2}; int sum=0; double result=0;
for(int count=0;count <array.length;count++)
sum=sum+array[count];
result=sum/array.length;
System.out.print(result);
What will be the value of result:
A. The sum of all the values in the array added together
B. The average of all the values in the array
C. 0
D. 5, since there are 5 values in the array
3)What will be the output of the following code:
int array[ ]=new int[5];
for(int count=0;count<array.length;count++)
{
array[count]=count*3;
System.out.print(array[count]+" ");
}
A. 0 3 6 9 12
B. 0 0 0 1 1 1 2 2 2 3 3 3 4 4 4 5 5 5
C. 3 6 9 12
D. 0 3 6 9 12 15
4) What will be the output of the following code:
int array[]=new int[10];
for(int count=0;count<array.length;count++)
{
array[count]=count*2;
System.out.print(array[count]+" ");
}