Why Bitshift(1)
One “old school” reason to use bitshift, is division and multiplication.
As you know, doing division or multiplication in computer it taskes a lot step then add/minus.(Now mordern PC will not feel this. But it still an issue in some extreme cases.)
Bitshift help PC do super faster on division and multiplication.
When we shift right 1 bit, it performs a division by 2 in decimal:
code snippet start
Before: 00001100 // 12 in decimal
----right sihift 1bit-------
After: 00000110 // 6 in decimalcode snippet end
When we shift “left” 1 bit, it performs a multiplication by 2 in decimal:
code snippet start
Before: 00001100 // 12 in decimal
----left sihift 1bit-------
After: 00011000 // 24 in decimalcode snippet end