Memory fragmentation in C: Design, implement, and execute a C-program that does the following: 

It allocates memory for a sequence of 3m arrays of size 800,000 elements each; then it explicitly deallocates all even-numbered arrays and allocates a sequence of m arrays of size 1,000,000 elements each. 

Measure the amounts of time your program requires for the allocation of the first sequence and for the second sequence. Choose m so that you exhaust almost all of the main memory available to your program. Explain.