at the given time there are the following gaps in the memory allocation (in memory order) M1=9k, M2= 13k, M3=52k, M4=18k, M5=15k. Next process requests P1=36k memory and is allocated in M3 gap (52k). Show the memory allocation after the next four successive process requests of P2=15k P3=3k, P4=10k and P5=8k using each of the four placement algorithms; first fit, best fit, next fit and worst fit