Write a program to compare the performance of the lru and the optimal page replacement algorithms. the program will take a reference string and the number of frames as inputs. assume the maximum length of a reference string is 20 and there are 5 diffent pages from page 1 to page 5. the reference string can be randomly generated and the number of frames is entered through the keyboard. for example, the system generates a reference string 2 1 3 4 5 2 3 and you enter the number of frames 3. compare the number of page faults generated by the optimal and lru algorithms. print out the page replacement process and you can see how lru differs from the optimal.

a) A lightly inflated balloon is placed in a freezer: the size will decrease.

b)if it was instead kept outside in the sun for some time: the size will increase.

Explanation:

a) When we keep an inflated balloon in a freezer, it means we are keeping the balloon at lower temperature. According to kinetic molecular theory, if we decrease the temperature of gas sample, the kinetic energy of molecules will decrease, and they will move less randomly. The space between them will decrease, and the volume of the gas will decrease. This makes the size of balloon to decrease.

b) in second case, if we keep it in sun, the temperature will increase. The increase in temperature will increase the kinetic energy of molecules and thus molecules will move more randomly. The space between them will increase, this will increase the volume.

In extreme case the balloon may burst even.