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。 ID# qKFFW
插入排序: rq["O/2
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package org.rut.util.algorithm.support; G D{fXhgk
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import org.rut.util.algorithm.SortUtil; `yX+NRi(s
/** eZ5}O0sfp
* @author treeroot T,2Dr;
* @since 2006-2-2 2%C5P0;QX
* @version 1.0 DN':-PK
*/ OKP_3Ns
public class InsertSort implements SortUtil.Sort{ ESjJHZoD(
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/* (non-Javadoc) 3H#/u! W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #r)1<}_e#
*/ }lUpC}aq_
public void sort(int[] data) { Ty0T7D
int temp; W<|K
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Bi:wP/>v
} oEoJa:h
} }9udo,RWu
} ?J@qg20z
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} ?En|
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冒泡排序: RG
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package org.rut.util.algorithm.support; -s%-*K+,W
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import org.rut.util.algorithm.SortUtil; s8Ry}{
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/** ro^6:w3O^
* @author treeroot "Xk%3\{P
* @since 2006-2-2 +M
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* @version 1.0 J*~2:{=%
*/ gq_7_Y/
public class BubbleSort implements SortUtil.Sort{ j /dE6d
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/* (non-Javadoc) ?Ga2K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ph12x: @B
*/ ]n]uN~)9
public void sort(int[] data) { 7M#$: Fdb
int temp; NQiecxvt=
for(int i=0;i for(int j=data.length-1;j>i;j--){ l9NOzAH3
if(data[j] SortUtil.swap(data,j,j-1); D7WI(j\
} ]RXtC*
} ,C,e/>+My
} '=,rb
} kH8$nk eev
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} vgA!?P3
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选择排序: +V);'"L
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package org.rut.util.algorithm.support; xe gL!
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import org.rut.util.algorithm.SortUtil; |Iok(0V
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/** 7hF,gl5
* @author treeroot akvwApn5
* @since 2006-2-2 W^d4/]
* @version 1.0 c."bTq4tJ
*/ r]JC~{
public class SelectionSort implements SortUtil.Sort { ,KhMzE8_a
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/* ;;w6b:}-c
* (non-Javadoc) #ON#4WD?
* 3aE[F f[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }]g95xT
*/ ]Z$TzT&@%
public void sort(int[] data) { (O_t5<A*X
int temp; 2Z;`#{
for (int i = 0; i < data.length; i++) { mU3Y)
int lowIndex = i; +)JNFy-
for (int j = data.length - 1; j > i; j--) { '/u:,ar
if (data[j] < data[lowIndex]) { `gt&Y-
lowIndex = j; or%gTVZ
} >1a\%G
} f05"3L:
SortUtil.swap(data,i,lowIndex); przubMt
} %EVV-n@
} I`"-$99|t1
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} jW1YTQ
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Shell排序: ]D?# \|
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package org.rut.util.algorithm.support; @!":(@3[
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import org.rut.util.algorithm.SortUtil; Iu-'o
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/** 65waq~#
* @author treeroot uP(B<NfL:'
* @since 2006-2-2 zr3q>]oma
* @version 1.0 cZaF
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*/ A{4G@k+#d
public class ShellSort implements SortUtil.Sort{ S_|9j{w)
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/* (non-Javadoc) `CAG8D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y|e2j&m
*/ |6sT,/6
public void sort(int[] data) { dXhCyr%"6
for(int i=data.length/2;i>2;i/=2){ oN[Fz a>
for(int j=0;j insertSort(data,j,i); tKG;k"wk
} "GwWu-GS
} nIV.9#~&
insertSort(data,0,1); !@^y)v
} '0R/6Z|/Y
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/** q,;".3VQ
* @param data W$ JY M3!
* @param j u\()E|?p
* @param i ERfd7V<c>
*/ VMxYZkMNd_
private void insertSort(int[] data, int start, int inc) { C!ZI&cD9
int temp; tp1KP/2w[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (XbMrPKG
} FylWbQU9
} /'Quu)~
} *=$[}!YG
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} *Nvy+V
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快速排序: CF3E]dt
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package org.rut.util.algorithm.support; lFiq<3Nk
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import org.rut.util.algorithm.SortUtil; LKR= =;qn
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/** DL'd&;6
* @author treeroot |`_ <@b
* @since 2006-2-2 i(M(OR/4
* @version 1.0 H_%d3 RI
*/ [<D+pqh
public class QuickSort implements SortUtil.Sort{ $:f.Krj
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*
/* (non-Javadoc) 84[|qB,ML
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }iPo8Ra
*/ PoYr:=S?
public void sort(int[] data) { QO5OnYh
quickSort(data,0,data.length-1); ; @7
} eZ!yPdgy|
private void quickSort(int[] data,int i,int j){ f![xn2T
int pivotIndex=(i+j)/2; y!7B,
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SortUtil.swap(data,pivotIndex,j); Nl~Z,hT$*
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int k=partition(data,i-1,j,data[j]); !: m`9o8
SortUtil.swap(data,k,j); :0M'=~[
if((k-i)>1) quickSort(data,i,k-1); Ff[H>Lp~
if((j-k)>1) quickSort(data,k+1,j); u{g]gA8s
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} <WM -@J(1
/** x9xzm5
* @param data DgDSVFk
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* @param i 2-8YSHlh
* @param j .HyjL5r-
* @return beJZpg
*/ nnfY$&3A
private int partition(int[] data, int l, int r,int pivot) { v$t{o{3
do{ 2yl6~(JC+
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \#
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SortUtil.swap(data,l,r); E/:+@'(k
} e.h~[^zg
while(l SortUtil.swap(data,l,r); a4yOe*Ak,F
return l; tW:W&|q
} @kwLBAK}@
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} N1YgYL
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改进后的快速排序: ^Lsc`<xC
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package org.rut.util.algorithm.support; L&:M8xiA~$
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import org.rut.util.algorithm.SortUtil; q|n97.vD
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/** 'GrRuT<
* @author treeroot ?$<SCN=
* @since 2006-2-2 d-hbvLn
* @version 1.0 XXXljh6
*/
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public class ImprovedQuickSort implements SortUtil.Sort { <Cu'!h_nL
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private static int MAX_STACK_SIZE=4096; i B%XBR
private static int THRESHOLD=10; dj3|f{kg{
/* (non-Javadoc) &K06}[J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +*n]tlk
*/ USE [N
public void sort(int[] data) { ah 4kA LO
int[] stack=new int[MAX_STACK_SIZE]; P\.WXe#j
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int top=-1; cL?\^K)
int pivot; D._{E*vg
int pivotIndex,l,r; U%Dit
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stack[++top]=0; DD2adu^
stack[++top]=data.length-1; SrSG{/{
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while(top>0){ 5RW@_%C
int j=stack[top--]; s5Pq$<
int i=stack[top--]; b([:,T7
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pivotIndex=(i+j)/2; I9;xz ES
pivot=data[pivotIndex]; S<V-ZV&_:U
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SortUtil.swap(data,pivotIndex,j); 1d`cTaQ-
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do{ ,cLH*@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); g&Z"_7L~
SortUtil.swap(data,l,r); N A8
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} _jW>dU^B
while(l SortUtil.swap(data,l,r); 9p5= _
SortUtil.swap(data,l,j); yGRR8F5>(
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if((l-i)>THRESHOLD){
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stack[++top]=i; (m6EQoW^s+
stack[++top]=l-1; Hyf"iYv+
} 3be6p
if((j-l)>THRESHOLD){ RZ*<n$#6
stack[++top]=l+1; # ?_#!T|
stack[++top]=j; nQ|GqU\oA
} $Tfm/ =e
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} 87pnSj/X"
file://new InsertSort().sort(data); 'gYg~=
insertSort(data); z23#G>I&
} 46ILs1T6
/** ;"D~W#0-v
* @param data V5~fMsse
*/ ^s=*J=k
private void insertSort(int[] data) { lHcA j{6
int temp; <&`:&