7. Without using your computer, what is the output of the following code int[] a

Question

7. Without using your computer, what is the output of the following code

int[] a = { 1, -2, 4, 7, 23 };

for (int k=1; k<a.length; k++)

   a[k]=a[k-1];

for (int x: a)

   System.out.println(x);

8. Write code that will sort an array of Rational objects from Lab xx. Test your code with the values

Rational[ ] fracs = new Rational[5];

   fracs[0] = new Rational(1, 2);

   fracs[1] = new Rational(1,3);

   fracs[2] = new Rational(7,8);

   fracs[3] = new Rational(1, 100);

   fracs[4] = new Rational(5, 16);

Explanation / Answer

Please find the explanation for the problem::7

//Analysis the below code

//declaring the array
int[] a = { 1, -2, 4, 7, 23 };

//loop from k=1 to end of array
for (int k=1; k<a.length; k++)

//set current value equal to before array value
a[k]=a[k-1];

//loop and print array
for (int x: a)

System.out.println(x);

So when k = 1 , it will set a[1] = a[0] that is 1 hence a[1] will be 1
array will be 1,1,4,7,23

Similiarly when k=2 it will set a[2] = a[`] that is 1 hence a[1] will be 1
array will be 1,1,1,7,23

It will do the same till end of array
Finally value of array will be
1,1,1,1,1 and same will print in console

So output will be 1 in each line 5 times like below

1

1

1

1

1

Problem 8. Please provide the Rational class

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