quicksort

Just learn ruby, it happens algorithm teacher encourage in unfamiliar language to write algorithm, I use Ruby Bar ~ ~In other words, Ruby is really awesome, and it's a lot of intuitive way to use ... In the infinite worship .... During the period I encountered a invalid multibyte char (US-ASCII) error, the solution was to add a #encoding:utf-8 at the beginningThe mistake was asked by someone on the StackOverflow, and the answer wasWrite # Encoding:utf-8 on the top of that file. That is changes

unordered decimal group, followed by execution, our array is ordered. is actually a recursive process. The quickSort () below is the process. First, the partition () method is not required to be split, and then the quickSort () method is called again to execute the first half, and the same call to the QuickSort () method executes the second half. The code is sho

1 Import Java. util. arrays; 2 Import Java. util. Stack; 3 4 5 Public Class Quicksort { 6 7 8 Public Static Void Main (string [] ARGs ){ 9 Int [] Arr = {72, 6, 57, 88, 60, 42, 83, 73, 48, 85 }; 10 // Quicksort (ARR, 0, arr. Length-1 ); 11 Quicksort (ARR ); 12 System. Out. println (arrays. tostring (ARR

Take a value and compare it with other values. put a small value on the left of the value, a large value on the right of the value, and then follow this method to recursively code 1: The code is as follows: Function quicksort ($ str ){ If (count ($ str) $ Key = $ str [0]; // Obtain a value for comparison later; $ Left_arr = array (); $ Right_arr = array (); For ($ I = 1; $ I If ($ str [$ I] $ Left_arr [] = $ str [$ I]; Else $ Right_arr [] = $

To imagine such a requirement, we need to provide a sort component for our framework. Currently, Bubble Sorting is required.AlgorithmAccording to the idea of "interface-oriented programming", we can provide a unified interface isort for these sorting algorithms, in which there is a method sort (), it can accept an object array parameter. Returns the array after sorting the array. The interface is defined as follows: Public interface isort{Void sort (ref object [] besorted );} The class diagr

Public class quicksort { /** *Quick sorting * @ Param strdate * @ Param left * @ Param right */ Public void quicksort (string [] strdate, int left, int right ){ String middle, tempdate; Int I, J; I = left; J = right; Middle = strdate [(I + J)/2]; Do { While (strdate [I]. compareto (middle) I ++ ;//Find the number on the left that is greater than the median. While (strdate [J

the divide-and-conquer method to divide a string (list) into two substrings (sub-lists). The specific algorithm is described as follows: Select an element from the series, called the "Datum" (pivot); Reorder the columns, where all elements are placed in front of the datum in a smaller position than the base value, and all elements are larger than the base value behind the datum (the same number can be on either side). After the partition exits, the datum is in the middle of the seq

PHP$arr=Array(9,4,12,34,1,43,23,7,3,4,5,6,33,22,12,21,15,62,1222,21,322,432,31,54,64);//$sorted _arr = QuickSort ($arr);$sorted _arr= Bubllesort ($arr);Var_dump($sorted _arr);//Fast Sorting algorithmfunctionQuickSort ($arr){ if(Count($arr) >1){ $k=$arr[0]; $x=Array(); $y=Array(); $_size=Count($arr); for($i= 1;$i$_size;$i++){ if($arr[$i]$k){ $x[]=$arr[$i]; }Else{ $y[]=$arr[$i]; } } $x=

sorting: The code is as follows: #encoding: Utf-8 #author: Xu Jin, 4100213 #date: Oct 20, 2012 #RandomizedQuickSort #to sort an array by using QuickSort #example: #The original Array is:[10, 35, 25, 67, 69, 52, 24, 40, 69, 76, 6, 49] #The sorted array is: [6, 10, 24, 25, 35, 40, 49, 52, 67, 69, 69, 76] Arrayint = Array.new index = 0 while (Index Arrayint[index] = rand (m) #produce random number Index + + 1 End Puts "The original arra

Ruby implements three fast sorting algorithms: I just learned Ruby. It happened that the algorithm teacher encouraged me to write algorithms in unfamiliar languages. I will use Ruby ~~Ruby is really amazing, and many intuitive methods can be used ..... Infinite worship .... While I encountered an invalid multibyte char (US-ASCII) error, the solution is to add a # encoding: UTF-8 at the beginningThis error was asked by someone on stackoverflow. The answer Someone gave is:Write # encoding: UTF-8 o

:*/ 2.1 core code bool BubbleSort::sort(void){ int i,j; for( i=0; i 2.2 Time complexity and Space complexity /*** For sort algorithm, it's basic operation is swap two values. So we can compute it's sentence frequency f (n ):* F (n) = n * n = n ^ 2* (At worst situation)* And it's time complexity is:* T (n) = O (f (n) = O (n ^ 2)*** Obviously, It's space complexity is:* S (n) = O (g (n) = O (C) = O (1)* Because it use only constant space whatever n change.*/ /** The totally example sourc

than s If I >= J, then leave the loop If I Swap the left axis with J Recursive to the left of the axis Recursive to the right of the axis By performing the algorithm, the value on the left side of the axis will be less than s, and the value on the right side of the axis will be greater than s, so that the left and right sides of the axis are handed back, so that the order can be completed. In the above example, the value on the left side of 41 is smaller than it, and the val

Code Listing 1: Copy the code code as follows: function Quicksort ($STR) { if (count ($str) $key = $str [0];//takes a value, which is later used for comparison; $left _arr=array (); $right _arr=array (); for ($i =1; $i if ($str [$i]$left _arr[]= $str [$i]; Else $right _arr[]= $str [$i]; } $left _arr=quicksort ($left _arr);//recursive; $right _arr=quicksort ($righ

Take a value and compare it with other values. put a small value on the left of the value, a large value on the right of the value, and then follow this method to recursively code 1: The code is as follows: Function quicksort ($ str ){If (count ($ str) $ Key = $ str [0]; // Obtain a value for comparison later;$ Left_arr = array ();$ Right_arr = array ();For ($ I = 1; $ I If ($ str [$ I] $ Left_arr [] = $ str [$ I]; Else $ Right_arr [] =

mergesort(dataary) { if(dataary.length 2) {returndataary; }varStep =1;//control sub-sequence Size varleft, right;//left and right subscript while(step 0; right = step; while(right + Step) //elements that cannot be grouped if(right 2; }returndataary;}/** * Merge Array function mergearrays(ary, startleft, endleft, startright, endright) { varLeftary =New Array(endleft-startleft +1), rightary =New Array(endright-startright +1);varK = startleft; for(vari =0; I 1); I++) {l

Void QuickSort (SeqList R, int low, int high) { // Fast sorting of R [low... high] Int pivotPos; // the location of the benchmark record after Division If (low { // Sorting is required only when the Interval Length is greater than 1 Extends TPOs = Partition (R, low, high); // divide R [low... high] QuickSort (R, low, pivotPos-1); // recursively sorts the left Interval Q