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。 1!"0fZh9U
插入排序: W8Z&J18AU
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package org.rut.util.algorithm.support; GZ#6}/;b
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import org.rut.util.algorithm.SortUtil; /sf:.TpVh
/** j4L )D
* @author treeroot >-YPCW
* @since 2006-2-2 U+t|wK
* @version 1.0 d/G`w{H}y
*/ j?ihUNY!+
public class InsertSort implements SortUtil.Sort{ " d3pkY
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/* (non-Javadoc) Paz
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pOlo_na}[
*/ r>1M&Y=<
public void sort(int[] data) { A0sydUc
int temp; TTaSg\K
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
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} a;J{'PHu
} PR=:3-#R
} N.OC _H&
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冒泡排序: )&}\2NK6L
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package org.rut.util.algorithm.support; FN5*pVD;<
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import org.rut.util.algorithm.SortUtil; n*G[ZW*Uc
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/** ZcgSVMqEX
* @author treeroot Fx2z lM&
* @since 2006-2-2 i|PQNhUe
* @version 1.0 OI"vC1.5
*/ f>i6f@
public class BubbleSort implements SortUtil.Sort{ Q.Hy"~
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/* (non-Javadoc) Kl<qp7o0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K2,oP )0.Y
*/ .8hB <G
public void sort(int[] data) { :nYl]Rm
int temp; sXp>4MomV
for(int i=0;i for(int j=data.length-1;j>i;j--){ [OBj2=
if(data[j] SortUtil.swap(data,j,j-1); !={Z]J
} Z.+-MN WV
} 09<O b[%h
} 2@ vSe
} )tGeQXVhbJ
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} az@{O4
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选择排序: /v"u4Ipj
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package org.rut.util.algorithm.support; ~Emeo&X
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import org.rut.util.algorithm.SortUtil; g#qt<d}j
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/** wvsKnYKX
* @author treeroot mh;<lW\K/Z
* @since 2006-2-2 P]:r'^Yn
* @version 1.0 )O~LXK=b
*/ 8#NtZ
public class SelectionSort implements SortUtil.Sort { k"F5'Od
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/* _2+}_ >d
* (non-Javadoc) T8E=}!68w}
* q
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9X&Xc
*/ 3RG*:9
public void sort(int[] data) { nPh5(&E
int temp; S05+G}[$
for (int i = 0; i < data.length; i++) { rlr)n\R#
int lowIndex = i; ]2\|<.
for (int j = data.length - 1; j > i; j--) { 4hdxqI!y2
if (data[j] < data[lowIndex]) { {h/[!I`
lowIndex = j; R{GOlxKs C
} fCTdM+t
} 9,\b$?9
SortUtil.swap(data,i,lowIndex); ei)ljvvmHP
} (@*[^@ipV
} [2I1W1pd
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} /tI8JXcUK
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Shell排序: ~pA_E!3W
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package org.rut.util.algorithm.support; c?B@XIl
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import org.rut.util.algorithm.SortUtil; p`:hY`P
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/** 7YT%.ID
* @author treeroot ^6j: lL
* @since 2006-2-2 0zfh:O
* @version 1.0 9I>qD
*/ %PozxF:
public class ShellSort implements SortUtil.Sort{ *YmR7g |k
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/* (non-Javadoc) 9/3gF)I}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @\0U`*]^)
*/ UFBggT\
public void sort(int[] data) { pEgQ)
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for(int i=data.length/2;i>2;i/=2){ 5v6 x
for(int j=0;j insertSort(data,j,i); ApHs`0=(
} Z5iP1/&D
} c,nE@~ul2
insertSort(data,0,1); uFQ;}k;}
} Hhx"47:
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/** R6l`IlG`
* @param data u6^cLQO+
* @param j "SC }C
* @param i -|;{/ s5
*/ *R1m=
private void insertSort(int[] data, int start, int inc) { BSt^QH-'
int temp; GJ"S*30
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Er/h:=
} pu#h:nb>88
} "(bnr0
}
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快速排序: j}9][Fm1*
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package org.rut.util.algorithm.support; x(oL\I_Z
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import org.rut.util.algorithm.SortUtil; eC`} oEz
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/** oz3N
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* @author treeroot <u "xHl8Io
* @since 2006-2-2 B(tLV9B3Q
* @version 1.0 o/0cd
*/ <12 ia"}
public class QuickSort implements SortUtil.Sort{ ;75m 9yGo
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/* (non-Javadoc) L#U-dzy\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7{jB!Xj
*/ ^h wF=
public void sort(int[] data) { #snwRW>=[
quickSort(data,0,data.length-1); $sF'Sr{)y
} 0"l*8%g
private void quickSort(int[] data,int i,int j){ \S#Mc
int pivotIndex=(i+j)/2; 581Jp'cje
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SortUtil.swap(data,pivotIndex,j); Cj{+DXT
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int k=partition(data,i-1,j,data[j]); F)fCj^zL
SortUtil.swap(data,k,j); w:[1,rRvT
if((k-i)>1) quickSort(data,i,k-1); scr`] tD
if((j-k)>1) quickSort(data,k+1,j); >ZRCM
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} nV`n=x
/** _8zZ.~)
* @param data w3,DsEXu
* @param i GJTKqr|1O
* @param j ^YVd^<cE
* @return ,_SE!iL
*/ X8(H#Ef[
private int partition(int[] data, int l, int r,int pivot) { 9gWR djK:
do{ S
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :A2{
SortUtil.swap(data,l,r); |76G#K~<X
} r0MUv}p#|L
while(l SortUtil.swap(data,l,r); a4a/]q4T
return l; R0yPmh,{
} ]IF
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} o`tOnwt
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改进后的快速排序: +-%&,>R
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package org.rut.util.algorithm.support; |ZJ<J)y
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import org.rut.util.algorithm.SortUtil; pt/UY<@yoN
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/** .$ o0$`}
* @author treeroot |gV$ks\<
* @since 2006-2-2 !UzMuGj
* @version 1.0 Ca2He}r`
*/ N*^iOm]Y
public class ImprovedQuickSort implements SortUtil.Sort { yW=I*f
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private static int MAX_STACK_SIZE=4096; T
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private static int THRESHOLD=10; DfPC@`
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/* (non-Javadoc) Xa,d"R~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NA :_yA"
*/ 8D
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public void sort(int[] data) { 4J~ZZ
int[] stack=new int[MAX_STACK_SIZE]; {fd/:B 7T
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int top=-1; wI0NotC
int pivot; &EUI
int pivotIndex,l,r; %pJRu-D
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stack[++top]=0; B@+&?%ub:
stack[++top]=data.length-1; z~m{'O`
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while(top>0){ {s{bnU
int j=stack[top--]; Rfx}[!<{N
int i=stack[top--]; 6x.ZS'y
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pivotIndex=(i+j)/2; R(^2+mV?
pivot=data[pivotIndex]; On`T
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SortUtil.swap(data,pivotIndex,j); qH=<8Iu
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file://partition 5LX'fL7zU
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r=j; prdc}~J8{
do{ kq4ii`zi8
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); W5SCm(QS5
SortUtil.swap(data,l,r); rYKGBo8"
} xwJ.cy
while(l SortUtil.swap(data,l,r); wCitQ0?
SortUtil.swap(data,l,j); <E&8g[x6
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if((l-i)>THRESHOLD){ ]ZI ?U<0
stack[++top]=i; F,.dC&B
stack[++top]=l-1; $[6] Ly(F)
} ll^#I/
if((j-l)>THRESHOLD){ c $fYK
stack[++top]=l+1; w9aLTLv-
stack[++top]=j; H[DBL
} 0|chRX
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} n85d
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file://new InsertSort().sort(data); X~VJO|k pz
insertSort(data); #*tWhXU
} i.5?b/l0
/** P$H9
* @param data /lb"g_
*/ R^f-j-$o]
private void insertSort(int[] data) { cYx.<b
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int temp; = lMs1}S9
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q(s&2|
} j&|>Aa${
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} mzbMX
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} !?aL_{7J
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归并排序: 40m>~I^q}
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package org.rut.util.algorithm.support; M@a=|N~
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import org.rut.util.algorithm.SortUtil; Ch0t'
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/** "V>p
* @author treeroot g+pj1ycw/
* @since 2006-2-2 ;NPbEPL[5
* @version 1.0 )+dd
*/ vD91t/_+
public class MergeSort implements SortUtil.Sort{ "bmWr)
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/* (non-Javadoc) 1MYA/l$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |HfN<4NL
*/ I%'6IpR"d
public void sort(int[] data) { gbr-C
int[] temp=new int[data.length]; 4<<T#oW.:G
mergeSort(data,temp,0,data.length-1); v[!ZRwk4w3
} A[8vD</}_
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private void mergeSort(int[] data,int[] temp,int l,int r){ Scz/2vNi`
int mid=(l+r)/2; Nu4PY@m]C
if(l==r) return ; -;RW)n^n
mergeSort(data,temp,l,mid); %(d0`9
mergeSort(data,temp,mid+1,r); :&\^r=D
for(int i=l;i<=r;i++){ a[hQ<@1O
temp=data; *$*V#,V-
} .3:s4=(f
int i1=l; MzpDvnI9
int i2=mid+1; ,cwjieM
for(int cur=l;cur<=r;cur++){ a<Ksas'5S
if(i1==mid+1) 9`|~-b
data[cur]=temp[i2++]; hNUkaP
else if(i2>r) N}X7g0>hV
data[cur]=temp[i1++]; /;V:<mekf
else if(temp[i1] data[cur]=temp[i1++]; dA[S@ysvG
else 9 =zZ,dg
data[cur]=temp[i2++];
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} ;pVnBi
} 4fgYO]
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} |0s)aV|K
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改进后的归并排序: _eg&