Java-based binaries

/*
Different binary data performance:
Binary: Consists of 0, 1. Start with 0b.
Octal: by 0,1,... 7 composition. Start with 0.
Decimal: By 0,1,... 9 composition. The default integer is decimal.
Hex: by 0,1,... 9,a,b,c,d,e,f (both uppercase and lowercase) are composed. Start with 0x.
*/
Class Jinzhidemo {
public static void Main (string[] args) {
SYSTEM.OUT.PRINTLN (100); Decimal

System.out.println (0b100); Binary
System.out.println (0100); Octal
System.out.println (0x100); Hexadecimal
}

}

1: Get the decimal value of the following data:
0b10101
=1*2^4 + 1*2^2 + 1*2^0
=16 + 4 + 1
=21


0123
=1*8^2 + 2*8^1 + 3*8^0
=64 + 16 + 3
=83
0x3c
=3*16^1 + c*16^0
=48 + 12
=60

2: Binary, decimal, hexadecimal for the data below
52 respectively get binary, decimal, hexadecimal


Get binary:
52/2 = 26 0
26/2 = 13 0
13/2 = 6 1
6/2 = 3 0
3/2 = 1 1
1/2 = 0 1

0b110100

Get octal:
52/8 = 6 4
6/8 = 0 6

064

Get 16 binary:
52/16 = 3 4
3/16 = 03

0x34

3: Practice of symbolic data representation
A: It is known that a number of X's original code is 10110100B, try to find X's complement and anti-code.

Sign bit Value bit

Original code: 10110100

Anti-code: 11001011

Complement: 11001100

B: A number of X's complement 11101110B is known, try to find its original code.

Sign bit Value bit

Complement: 11101110

Anti-code: 11101101

Original code: 10010010

4:

Java-based binaries