[Link to this article]
Http://www.cnblogs.com/hellogiser/p/inversion-pairs-by-merge-sort.html
[Question]
With the beauty of programming, the issue of cutting light and shade can be further transformed into reverse order.
[Analysis]
Solving the
Learned blogger: Myzee, Shengweison's articleThe number of reverse order in a segment tree or tree-like array Suppose to give you a sequence 6 1 2 7 3 4 8 5, first we start to calculate the number of reverse, set the number of reverse order N;In
The series output in reverse order and the series output in reverse order.
This topic is the fifth week of programming assignments in NetEase cloud's C language programming advanced (Weng Kai). It is completed by referring to the demo given by the
Brainman
Time limit:1000 MSMemory limit:30000 KB
64-bit integer Io format:% I64d, % i64uJava class name:Main
[Submit] [Status] [discuss]Descriptionbackground Raymond Babbitt drives his brother Charlie mad. recently Raymond counted 246 toothpicks
[C Language] three digits in reverse order, digits in reverse order in C Language
Bytes ----------------------------------------------------------------------------------------
// Main. c
// Demo8
// Created by weichen on 14/12/18.
// Copyright
Huawei trial-the product of the single digit and the reverse order of the numbers, and the reverse order of Huawei
# Include # include using namespace std; // reverse string revs (string s) {int j = s. length ()-1; int I = 0; char t; while (
Shocked! Vector two lines of code to reverse order, six lines of code through the normal balancing tree, vector Reverse OrderReturns the reverse order of two lines of code in Vector.
Background
First, let's think about the Bubble sorting process. It'
Number of reverse order permutationsTitle DescriptionSearch engines on the internet often need to compare information, for example, by a person's ranking of something to estimate his or her interest in a variety of different information, so as to
T4: Reverse Order
A [I] is the prefix and
Derivation (A [J]-A [I])/(J-I)> = m
A [J]-A [I]> = m (J-I)
A [J]-M * j> = A [I]-M * I
Set B [] = A []-M *();
B [J]> = B [I]
That is, reverse order;
There are two methods for reverse order query:
Merge and
The number of reverse order refers to the example: Array a={2,4,3,5} then is an inverse number.One: Violent matchFor the elements in array a, I from 0 to n-1,j from I+1 to N, judging whether each is an inverse number, time complexity O (LgN). It's
Reverse Order: Set A to an array with n different elements. If I A [J], (I, j) is called a reverse order of.
Given an array and finding the number of Reverse Order pairs, we can use a loop to find the number of Reverse Order pairs in the time of N ^
First, the topicIn the array of two digits, if the previous number is greater than the number that follows, then these two numbers form an inverse pair. Enter an array to find the total number of reverse pairs in this array p. and the output of p to
Write RecursionProgramYou must pay attention to the logic of the recursive body, and assume that the sub-problem has been solved.
The Helper function only needs to solve the current layer's self-asked body well. Don't think too much about the
Sword Point 36: Reverse order in an arraytitle: in the array of two numbers, if the previous number is greater than the following number, then the two numbers constitute an inverse pair. Enter an array to find the total number of reverse pairs in
Merge sort-Calculate reverse order numberMerge sort uses the thought of divide and conquer, Time complexity O (N*LOGN) dynamic memory utilization can reduce the space overhead;Merge sort can also be used to calculate reverse order number;Number of
Definition of Kendall tau distance
The following definitions are taken from the Wiki encyclopedia Kendall tau Distance:
The Kendall tau rank distance is a metric that counts the number of pairwise disagreements between the ranking lists. The larger
Spoj cowpic (reverse-order deformation question)SPOJ COWPIC
Question Link
A sequence that can be exchanged adjacent to each other. One of the 1-N pairs that can be exchanged at least a few times turns into a loop
Train of Thought: for the original
1019 Reverse Order numberBase time limit:1 seconds space limit:131072 KBIn one arrangement, if the front and back positions of a pair of numbers are opposite to the size order, that is, the previous number is greater than the subsequent number, then
Http://www.hookcn.org/2011/01/reverse-bits.html
The question originated from a company is very simple:Input a byte (8 bits) and sort it in reverse order.
That is to say, if the eight bits in the input byte are "abcdefgh", you need to get "hgfedcba
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