Generate a random character data generated by the formation of large data files (for example, the size of ≥ 1GB). All the bytes in the file upside down, into the original file, is about the first byte of the file and tail bytes on the exchange, and sub-sub-byte Last byte swapping, and so on. Write two programs, one program file access using conventional methods, another program using memory-mapped file method. Record the time to complete the two methods of bytes needed to rewind and compared.

Memmng2\Debug\Memmng2.exe
.......\.....\Memmng2.ilk
.......\.....\Memmng2.pdb
.......\Memmng2\data.txt
.......\.......\Debug\CL.read.1.tlog
.......\.......\.....\CL.write.1.tlog
.......\.......\.....\link-cvtres.read.1.tlog
.......\.......\.....\link-cvtres.write.1.tlog
.......\.......\.....\link-rc.read.1.tlog
.......\.......\.....\link-rc.write.1.tlog
.......\.......\.....\link.read.1.tlog
.......\.......\.....\link.write.1.tlog
.......\.......\.....\Map.obj
.......\.......\.....\Memmng2.lastbuildstate
.......\.......\.....\Memmng2.log
.......\.......\.....\vc110.idb
.......\.......\.....\vc110.pdb
.......\.......\Map.cpp
.......\.......\Memmng2.vcxproj
.......\.......\Memmng2.vcxproj.filters
.......\.......\Release\CL.read.1.tlog
.......\.......\.......\CL.write.1.tlog
.......\.......\.......\link-cvtres.read.1.tlog
.......\.......\.......\link-cvtres.write.1.tlog
.......\.......\.......\link-rc.read.1.tlog
.......\.......\.......\link-rc.write.1.tlog
.......\.......\.......\link.read.1.tlog
.......\.......\.......\link.write.1.tlog
.......\.......\.......\Map.obj
.......\.......\.......\Memmng2.lastbuildstate
.......\.......\.......\Memmng2.log
.......\.......\.......\vc110.pdb
.......\Memmng2.sdf
.......\Memmng2.sln
.......\Memmng2.v11.suo
.......\Release\Memmng2.exe
.......\.......\Memmng2.pdb
...Mng\Debug\MemMng.exe
......\.....\MemMng.ilk
......\.....\MemMng.pdb
......\MemMng\data.txt
......\......\Debug\CL.read.1.tlog
......\......\.....\CL.write.1.tlog
......\......\.....\link-cvtres.read.1.tlog
......\......\.....\link-cvtres.write.1.tlog
......\......\.....\link-rc.read.1.tlog
......\......\.....\link-rc.write.1.tlog
......\......\.....\link.read.1.tlog
......\......\.....\link.write.1.tlog
......\......\.....\MemMng.lastbuildstate
......\......\.....\MemMng.log
......\......\.....\Normal.obj
......\......\.....\vc110.idb
......\......\.....\vc110.pdb
......\......\MemMng.vcxproj
......\......\MemMng.vcxproj.filters
......\......\Normal.cpp
......\......\Release\CL.read.1.tlog
......\......\.......\CL.write.1.tlog
......\......\.......\link-cvtres.read.1.tlog
......\......\.......\link-cvtres.write.1.tlog
......\......\.......\link-rc.read.1.tlog
......\......\.......\link-rc.write.1.tlog
......\......\.......\link.read.1.tlog
......\......\.......\link.write.1.tlog
......\......\.......\MemMng.lastbuildstate
......\......\.......\MemMng.log
......\......\.......\Normal.obj
......\......\.......\vc110.pdb
......\MemMng.sdf
......\MemMng.sln
......\MemMng.v11.suo
......\Release\MemMng.exe
......\.......\MemMng.pdb
...mng2\Memmng2\Debug
.......\.......\Release
...Mng\MemMng\Debug
......\......\Release
...mng2\Debug
.......\Memmng2
.......\Release
...Mng\Debug
......\MemMng
......\Release
Memmng2
MemMng

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