用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 kgy:Q'
插入排序: ;=geHiQHA
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package org.rut.util.algorithm.support; L,SGT8lL
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import org.rut.util.algorithm.SortUtil; k4,BNJt'Z
/** fq5_G~c=
* @author treeroot C|d\3S\(
* @since 2006-2-2 |X,|QC*7?
* @version 1.0 /c"efnb!
*/ Ob}?zl@
public class InsertSort implements SortUtil.Sort{ $"dR
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/* (non-Javadoc) DVah
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AgOp.~*Z~V
*/ |l&vkRrN
public void sort(int[] data) { -:Fe7c
int temp; 3<k `+,'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u\LiSGePN
} fLDg~;3
} 90|7ArM_[
} 6lkl7zm
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} 8~9030>Q
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冒泡排序: <c)+Fno[E_
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package org.rut.util.algorithm.support; @Ys!DScY,
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import org.rut.util.algorithm.SortUtil;
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/** @[#$J0qq
* @author treeroot s
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* @since 2006-2-2 W?0 lV5/
* @version 1.0 YoN*:jB<M
*/ ysmNio
public class BubbleSort implements SortUtil.Sort{ ?pYKZg/c
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/* (non-Javadoc) %|^OOU}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ *<E]E?
public void sort(int[] data) { 'xhcuVl
int temp; o;W`4S^
for(int i=0;i for(int j=data.length-1;j>i;j--){ G P:FSprP
if(data[j] SortUtil.swap(data,j,j-1); cTD!B% x
} h Ggx
} Oy<5>2^P
} : p{+G
} Ma'_e=+A
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} %q!8={J8
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选择排序: HDda@Jy
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package org.rut.util.algorithm.support; 6ZKsz5:=
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import org.rut.util.algorithm.SortUtil; t~E<j+<2B
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/** P6 ;'Sza
* @author treeroot 4Sm]>%F':
* @since 2006-2-2 6`0mta Q
* @version 1.0 _*IPk
*/ ?gO8kPg/D
public class SelectionSort implements SortUtil.Sort { DHw&+MY
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/* v1|Bf8
* (non-Javadoc) J[A14z]#`
* /0W9g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @*0cMO;SpG
*/ `%E8-]{uS
public void sort(int[] data) { "]m+z)lWd
int temp; Vo9F
for (int i = 0; i < data.length; i++) { dWXstb:[
int lowIndex = i; P7 ]z
for (int j = data.length - 1; j > i; j--) { Q~MC7-n>
if (data[j] < data[lowIndex]) { Q.9qImgN
lowIndex = j; I.Y['%8,5~
} {ekCQeDo
} nI/kw%<
SortUtil.swap(data,i,lowIndex); j,t#B"hOnp
} CW)Z[<d8
} ~%/Wupf
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} :LWn<,4F&
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Shell排序: .MVY B\6Q0
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package org.rut.util.algorithm.support; rUlS'L;$"
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import org.rut.util.algorithm.SortUtil; mAeuw7Ni
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/** 4<lQwV6=
* @author treeroot BaO1/zk
* @since 2006-2-2 Tzt ,/e
* @version 1.0 zOHypazOTq
*/ kWlAY%
public class ShellSort implements SortUtil.Sort{ \XF}?*8
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/* (non-Javadoc) Z2Zq'3*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2[B4f7
*/ SR^_cpZoi
public void sort(int[] data) { d'*]ns
for(int i=data.length/2;i>2;i/=2){ =(EI~N
for(int j=0;j insertSort(data,j,i); E"%2)
} aYn8^
} 4J|t?]ij|E
insertSort(data,0,1); YC=S5;
} 3IR
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/** B_ja&) !s1
* @param data `^(jm
* @param j `k;KBW
* @param i ZUp\Ep}
*/ Y4F6qyP)"
private void insertSort(int[] data, int start, int inc) { \dlph
int temp; z305{B:Y
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <]Wlx`=/D
} _1*7Z=|
} w-b' LP
} Vvt ;
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} ?(
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快速排序: 6*nAo8gl
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package org.rut.util.algorithm.support; spQLG_o,J
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import org.rut.util.algorithm.SortUtil; QC0!p"
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/** '4OcZ/oI
* @author treeroot B/J&l
* @since 2006-2-2 b@t5`Y-+K
* @version 1.0 IN7<@OS7
*/ 0rokR&Y-d
public class QuickSort implements SortUtil.Sort{ 9p@C4oen
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/* (non-Javadoc) V8-h%|$p3W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0IT@V5Gdj
*/ BHj\G7,S
public void sort(int[] data) { B|%tE{F
quickSort(data,0,data.length-1); !r+IXuqV,!
} 'R9g7,53R
private void quickSort(int[] data,int i,int j){ "PH6e bm
int pivotIndex=(i+j)/2; -6=<#9R
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SortUtil.swap(data,pivotIndex,j); %8)W0WMe
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int k=partition(data,i-1,j,data[j]); 0_ yP\m
SortUtil.swap(data,k,j); XM|%^ry
if((k-i)>1) quickSort(data,i,k-1); i3mAfDF
if((j-k)>1) quickSort(data,k+1,j); 2UP,Tgn..
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} PT9v*3Bq~
/** |%D%0TR&Q
* @param data Zg:gY"^
* @param i !EF(*~r!9L
* @param j O'NW
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* @return &hV Zx
*/ f+Dn9t
private int partition(int[] data, int l, int r,int pivot) { kw,$NK'
do{ gJ3c;
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~^N]yb
SortUtil.swap(data,l,r); 9.M{M06;
} O\OE0 [[
while(l SortUtil.swap(data,l,r); {SG>'KXZ
return l; -s__E
} +`bC%\T8?
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} C:\(~D*GS
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改进后的快速排序: Ulqh@CE)
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package org.rut.util.algorithm.support; ujgLJ77
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import org.rut.util.algorithm.SortUtil; oP,9#FC|(
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/** `_ (~ Ud
* @author treeroot > %*B`oqo
* @since 2006-2-2 VY'Q|[
* @version 1.0 ; !$m1
*/ x:5dCI
public class ImprovedQuickSort implements SortUtil.Sort {
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. p^xS6e{
private static int MAX_STACK_SIZE=4096; +=cam/A
private static int THRESHOLD=10; We`'>'W0
/* (non-Javadoc) ^[->
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gbOCR1PBg
*/ \gccQig1CJ
public void sort(int[] data) { mog9 jw
int[] stack=new int[MAX_STACK_SIZE]; b>cafu
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int top=-1; :kw0y
int pivot; m/USC'U%
int pivotIndex,l,r; <>4!XPo%J
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stack[++top]=0; MV+i{]
stack[++top]=data.length-1; 3;$bS<>
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while(top>0){ d,'!.#e
int j=stack[top--]; ]1fZupM^6
int i=stack[top--]; C?H{CP
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pivotIndex=(i+j)/2; #*%fu
pivot=data[pivotIndex]; %my
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SortUtil.swap(data,pivotIndex,j); ER|!KtCSM
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