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。 UCWBYC+
插入排序: :gC#hmm^
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package org.rut.util.algorithm.support; FgO)DQm
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import org.rut.util.algorithm.SortUtil; aQ~s`^D
/** %XTI-B/K
* @author treeroot E\$W_Lmr
* @since 2006-2-2 dqAw5[qMJ
* @version 1.0 Ap !lQ>p
*/ -$@h1Y
public class InsertSort implements SortUtil.Sort{ GKCroyor
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/* (non-Javadoc) P|> ~_$W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h7@6T+#WoT
*/ S[QrS7
public void sort(int[] data) { jFb?b6b
int temp; mBC+6(5V
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YbLW/E\T
} v8DC21pb
} y?!"6t7&
} 4.(4x&
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冒泡排序: O9p|a%o
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package org.rut.util.algorithm.support; Ct|A:/z(
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import org.rut.util.algorithm.SortUtil; -{_PuJ "
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/** Hr4}3.8
* @author treeroot ,2)6s\]/b
* @since 2006-2-2 XZwK6F)L
* @version 1.0 DeYV$W
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*/ P
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public class BubbleSort implements SortUtil.Sort{ rN{ c7/|
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/* (non-Javadoc) 4`R(?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RFH0
*/ Ca3~/KrM
public void sort(int[] data) { ]s748+
int temp; 6 aV_@no.C
for(int i=0;i for(int j=data.length-1;j>i;j--){ IIqUZJ
if(data[j] SortUtil.swap(data,j,j-1); ~v"L!=~G;a
} nxHkv`s k
} 6`-jPR
} wvPk:1wD5
} Ic4H# w
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} qjc4.,/
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选择排序: +'w3 =2Bo
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package org.rut.util.algorithm.support; rXU\
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import org.rut.util.algorithm.SortUtil; ~3 bPIg7D
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/** I!?}jo3
* @author treeroot '`<w#z}AF
* @since 2006-2-2 IaXeRq?<
* @version 1.0 e 3TI|e_
*/ )>- =R5ZV
public class SelectionSort implements SortUtil.Sort {
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/* *D3/@S$B
* (non-Javadoc) xZv#Es%#
* o0vUj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N8FF3}>
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*/ @|%2f@h
public void sort(int[] data) { #lW`{i
int temp;
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for (int i = 0; i < data.length; i++) { .VzT:4-<Q"
int lowIndex = i; [zM-^
for (int j = data.length - 1; j > i; j--) { >oe]$r
if (data[j] < data[lowIndex]) { E+w<RNBmz
lowIndex = j; aAA U{EWW
} 8pgEix/M5o
} f`=-US
SortUtil.swap(data,i,lowIndex); 9p2&)kb6
} /~f'}]W
} Oo%d]8W
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} A$:U'ZG_
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Shell排序: #?9;uy<j.q
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package org.rut.util.algorithm.support; \)?HJ
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import org.rut.util.algorithm.SortUtil; hFl^\$Re
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/** =zKM=qba
* @author treeroot ?m?::R H
* @since 2006-2-2 e&aWq@D
* @version 1.0 )f<z%:I+Z
*/ }d}Ke_Q0
public class ShellSort implements SortUtil.Sort{ [^98fAlz6
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/* (non-Javadoc) R',rsGd`6j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hNmJ!Uo
*/ 'u |c
public void sort(int[] data) { DX
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for(int i=data.length/2;i>2;i/=2){ ByNn
for(int j=0;j insertSort(data,j,i); D\NKC@(M
} l&Q`wR5e
} !NvI:C_4|
insertSort(data,0,1); o!ebs0
} SmSH2m-
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/** o]M5b;1
* @param data ;P%1j| 7
* @param j )"aV* "
* @param i XXn67sF/
*/ ~;{;,8!)
private void insertSort(int[] data, int start, int inc) { 9c,'k#k
int temp; My[pr_xg
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;LSANr&
} MPg)=LI
} c>:wd@w
} 9} M?P
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} k],Q9
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快速排序: =BAW[%1b
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package org.rut.util.algorithm.support; ,,Q O^j]4~
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import org.rut.util.algorithm.SortUtil; 'UX!*5k<:
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/** 9oR@UW1
* @author treeroot ;1O_M9
* @since 2006-2-2 tKx~1-
* @version 1.0 gS]@I0y8
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*/ Mhf5bN|wQ
public class QuickSort implements SortUtil.Sort{ &n}f?
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/* (non-Javadoc) dkBIx$t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4,gK[ dc
*/ H-*yh!
public void sort(int[] data) { *>'V1b4}
quickSort(data,0,data.length-1); P& -Qc
} <~'"<HwtK
private void quickSort(int[] data,int i,int j){ `FDiX7M
int pivotIndex=(i+j)/2; a PfO$b:
file://swap J1RJ*mo7,
SortUtil.swap(data,pivotIndex,j); GmEJhr.3`=
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int k=partition(data,i-1,j,data[j]); 4n g]\ituS
SortUtil.swap(data,k,j); JZ*/,|1}EC
if((k-i)>1) quickSort(data,i,k-1); BmMGx8P
if((j-k)>1) quickSort(data,k+1,j); 6x[}g
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} ZC`wO%,
/** \[_t]'p
* @param data a /l)qB#
* @param i 0s3%Kqi[
* @param j g:D>.lKd
* @return -)]Yr #Q
*/ BsqP?/
private int partition(int[] data, int l, int r,int pivot) { #crQ1p) \
do{ x_6[P2"PP
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {V$|3m>:*
SortUtil.swap(data,l,r); ?2;&O`x*
} `maKN \;
while(l SortUtil.swap(data,l,r); i6tf2oqO7
return l; )c83/= <v
} kmsb hYM)
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} }{qZ[/JwqN
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改进后的快速排序: W*4-.*U8a
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package org.rut.util.algorithm.support; #ASz;$P
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import org.rut.util.algorithm.SortUtil; 9T}pT{~V
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/** 8'.Hyy@;
* @author treeroot EXwo,?I
* @since 2006-2-2 z(e xA
* @version 1.0 nntuLuW
*/ 2*< nu><b
public class ImprovedQuickSort implements SortUtil.Sort { w%VU/6~
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private static int MAX_STACK_SIZE=4096; C:* *;=.
private static int THRESHOLD=10; ,p@y]
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/* (non-Javadoc) L9\1+rq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k\YG^I
*/ a|x.C6Pe
public void sort(int[] data) { axRV:w;E<
int[] stack=new int[MAX_STACK_SIZE]; [b<oDX#
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int top=-1; /W30~y
int pivot; :P\7iW
int pivotIndex,l,r; Ic:(Gi- %
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stack[++top]=0; el<s8:lA
stack[++top]=data.length-1; WZejp}x
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while(top>0){ 9ni1f{k
int j=stack[top--]; $s c
int i=stack[top--]; dA`IEQJL
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pivotIndex=(i+j)/2; } FlT%>Gw
pivot=data[pivotIndex]; p8H'{f\G
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SortUtil.swap(data,pivotIndex,j); @* jz
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file://partition y8Z_Itlf
l=i-1; }wjw:M
r=j; "3"V3w
do{ N1S{suic
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); vq0Tk
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SortUtil.swap(data,l,r); 2dcV"lY
} E`0?
while(l SortUtil.swap(data,l,r); UA0Bzoky;
SortUtil.swap(data,l,j); 9y8&9<#
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if((l-i)>THRESHOLD){ Yty/3T3)e
stack[++top]=i; Mj?`j_X
stack[++top]=l-1; 4qbBc1,7y
} E *6Cw
l
if((j-l)>THRESHOLD){ R)(T^V`{
stack[++top]=l+1; :WS@=sZN
stack[++top]=j; B=T'5&
} >`mVY=Hi
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} D~fl JR
file://new InsertSort().sort(data); b-?gw64#
insertSort(data); sPQQ"|wU
} [{,T.;'<j
/** Apag{Z]^B
* @param data L>NL:68yN
*/ 9r<J"%*Q
private void insertSort(int[] data) { "]x'PI 4J
int temp; Y%aCMP9j~9
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PfD.:amN7
} ~i{(<.he
} c(E{6g?
} v2\FA(BPn
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} f=Gg9bnm3
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归并排序: y0.'?6k
9C9oUtS
package org.rut.util.algorithm.support; ,vawzq[oSy
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import org.rut.util.algorithm.SortUtil; a=1@*ID
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/** o]_dJB
* @author treeroot vjCu4+w($Z
* @since 2006-2-2 aQc leTb
* @version 1.0 $am$EU?s
*/ Xp% v.M
public class MergeSort implements SortUtil.Sort{ wqs?828x
uc\Kg1{
/* (non-Javadoc) e@07
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hJ? O],4J
*/ [`[|l
public void sort(int[] data) { ^_W#+>&--
int[] temp=new int[data.length]; aEWWP]
mergeSort(data,temp,0,data.length-1); a:`E0}C
} 8z`G,qh
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private void mergeSort(int[] data,int[] temp,int l,int r){ (Q!}9K3
int mid=(l+r)/2; .},'~NM]
if(l==r) return ; 7#a-u<HF"
mergeSort(data,temp,l,mid); .bg~>T+<
mergeSort(data,temp,mid+1,r); EwT"uL*V;
for(int i=l;i<=r;i++){ eA ?RK.e
temp=data; I)[DTCJ~
} aCj&O:]=
int i1=l; :#ik. D
int i2=mid+1; nEy&