[Java Basics] 14. bitwise operations-bitwise AND (&) operations-(fast modulo algorithm) and java Basics 14 Operations
The redis dictionary structure is learned. The hash Value & sizemask operation is used when the hash is used to find the index
Using the method of constructing a hash table instead of a simple traversal lookup
is a common algorithm for optimization
When calculating the hash value based on the keyword
The final bucket subscript is usually computed using the modulo
NYOJ modulo of the power of 102
Power modulus time limit: 1000 MS | memory limit: 65535 KB difficulty: 3
Description
Evaluate the remainder of a's power B on c
Input
Enter an integer n in the first line to
I. Problem description:
Calculate (a ^ power) % m, where power is a non-negative big integer, A, M is an integer greater than 1.
Ii. Problem Analysis:
Obviously, power is a big integer, so the overflow of Power computing must be considered. How can
Power modulus time limit: 1000 MS | memory limit: 65535 kb difficulty: 3
Description
Evaluate the remainder of A's power B on C
Input
Enter an integer N in the first line to indicate the number of groups of
Proof and use of Barrett reduction algorithm.
The author has just finished the course design work, free to write an article.
Exponential operations in large numbers require a number to be modeled, because the maximum possible binary is 2048 bits
You have to colorM X N(1M,N108) Two dimen1_grid. You will be providedK(2K108) different colors to do so. You will also be provided a listB(0B500) List of blocked cells of this grid. You cannot color those blocked cells. A cell can be described (X,Y),
[Problem]Calculate the value of a ** B % C."**" Indicates the power (which is expressed in Python); "%" indicates the modulo operation.
[Analysis]First, the following formula is obtained based on the nature of the modulo operation:(A * B) % C =
First of all, the purpose of the fast power is to do a quick exponentiation, assuming we ask a^b, according to the naïve algorithm is to connect A to B, so that the time complexity is O (b) is also the O (n) level, fast power to do O (Logn), a lot
What kind of storage is best? For example, you only need to check whether there is a "9d9720.dfc685f9b10d8d1b944330c09" in this database. Is it best to return trueorfalse for storage? For example, you only need to check whether there is a "9d971_dfc6
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