Negative integers are typically encoded using two's complement notation. That is, to convert the sign of any given integer, the bits are flipped (as per ones' complement) and 1 is added. Thus to convert the value +1 to -1 using 8-bit notation:
00000001 = 11111110 + 1 = 11111111
And reversing the process (-1 to +1):
11111111 = 00000000 + 1 = 00000001
In hexadecimal notation, the value 0x80 is the largest negative integer (-128) and 0x7F is the largest positive integer (+127). That is, 10000000 and 01111111 respectively.
Note that ones' complement was used in the past and while some systems still use it they are few and far between today. One of the problems with ones' complement is that +0 and -0 (00000000 and 11111111 respectively) would be treated as being two separate values, when the value 0 is neither positive nor negative. In twos complement, flipping the sign of zero becomes:
00000000 = 11111111 + 1 = 00000000
Note that the actual value is 100000000, but the most-significant bit (the overflow) is ignored because there can only be 8-bits in an 8-bit value. The same is true of 16-bit values, 24-bit values, etc. When all bits are filled with 1s, adding 1 wraps the value back to 0 again.
The encoding method used by the majority of processors is known as "two's compliment." To calculate a negative value, you use the form 2N-X, where N is the width of the number field (e.g. 8 bits), and X is the positive form of the number. Thus, 42 in signed byte is 28-42 = 256-42 = 214 (1101 0110). In two's compliment, the largest positive value is 2(N-1)-1, and the lowest negative value is -2(N-1). For 8 bits, this means the range is from -128 to +127. Zero is considered "positive" in two's compliment, which is why the positive maximum is one less than the negative maximum.
The correctness of either Prim's or Kruskal's algorithm, is not affected by negative edges in the graph. They both work fine with negative edges. The question boils down to "Does a Priority Queue of numbers work with negative numbers?" because of the fact that both Prim's and Kruskal's algorithm use a priority queue. Of course -- as negative numbers are simply numbers smaller than 0. The "<" sign will still work with negative numbers.
Enter the number, then press the button marked with +/-
Depends on the encoding. It is probably 0xF (15), but it could be -1 (if 4 bits in 2's complement), or any other value if a non-standard encoding. the coding can be octal or hexadecimal the value in decimal does not change in octal it is 17 in hexadecimal it is F in decimal is 15. ALL of these numbers are right it depends of what code the reference is to
18
acii value of 1 is 49 for a complete list check out: http://www.killersites.com/webDesignersHandbook/ascii_page2.htm
What is called a two's complement. A computer cannot store negative values (non-positive logical values don't exist in binary logic), so it transforms the value into its "positive complement", which can be stored and acted upon.
The product. Of three negative numbers is negative I hope you can get 100 in your homework
They will be negative numbers as for example -5+(-7) = -12
It doesn't. EBCDIC is a code for encoding characters, not numbers. Of course you can store numbers in an alphanumeric variable, in which case you would use the minus sign for a negative number; but usually, numbers are stored in a more compact format. For example, 2's complement is commonly used to store integers.
No. Whole numbers are counting numbers and zero.
The product of three negative numbers is negative.
Where do we see negative numbers
It belongs to the set of negative rational numbers, negative real numbers, fractionall numbers, rational numbers, real numbers.
No, not all negative numbers are rational. There are many negative numbers that are irrational, just like the positive numbers.
Rational numbers can be negative or positive.
What do I know about negative numbers? A lot.
We have negative numbers, because if there were no negative numbers, people wouldn't lose profit, they would always gain.