... thenbeginmenu(x1,y1+(chon-1)*(dai +5) ,x2,y2+(chon-1)*(dai +5) ,nd[chon],h,mnc,mcc);menu(x1,y1+(chonm-1)*(dai +5) ,x2,y2+(chonm-1)*(dai +5) ,nd[chonm],h,mnr,mcr);setcolor( 15) ;settextstyle(4,0,2);outtextxy(180,420,'Mot ... exitelsebeginHeap_sort(Item, n);setcolor(1);outtextxy( 150 , 450 ,'An phim bat ky de tiep tuc, Esc de thoat !');setcolor( 15) ;outtextxy(100, 450 ,'Mang da duoc sap xep, an Enter de ve menu ... dobeginmenu(x1,y1,x2,y2,nd[i],h,mnc,mcc);dai:=y2-y1;y1:=y2 +5; y2:=y1+dai;setcolor( 15) ;settextstyle(4,0,2);outtextxy(180,420,'Mot so phuong phap sap xep.');settextstyle(0,0,0);end;y2:=y2-n*(dai +5) ;y1:=y1-n*(dai +5) ;menu(x1,round(y1),x2,round(y2),nd[chonm],h,mnr,mcr);setcolor( 15) ;settextstyle(4,0,2);outtextxy(180,420,'Mot...