Question

11. Describe an algorithm that interchanges the values of the variables x and y, using only assignments. What is the minimum number of assignment statements needed to do this?

Answer 1

Following is the algorithm to interchange the value of two variable x and y.

step 1:Read the two integer x and y.

step 2 :t=x

Step 3: x=y

step 4: y=t

The minimum number of assignment to do this is 3

Explanation:

After reading two integer x & y, create a variable "t" of integer type.

with the help of variable "t", we can swap the value of variable x and y.

It requires 3 assignment to interchange the value.