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。 /kU@S
插入排序: ?]D+H%3[$i
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package org.rut.util.algorithm.support; }]+}Tipd
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import org.rut.util.algorithm.SortUtil; $Wzv$4;
/** [KI`e
* @author treeroot Ko|xEz=
* @since 2006-2-2 OW}j4-~wL
* @version 1.0 oy
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*/ ( L\G!pP.
public class InsertSort implements SortUtil.Sort{ s4`*0_n
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/* (non-Javadoc) n UCk0:{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YCBML!L
*/ rqe_zyc&
public void sort(int[] data) { h$ iyclX
int temp; B9)qv>m
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p]|ME
} ":#x\;
} w^E]N
} GdeR#%z
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} A|_%'8
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冒泡排序: MQH8Q$5D
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package org.rut.util.algorithm.support; 0*IY%=i
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import org.rut.util.algorithm.SortUtil; bA^:p3
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/** %802H%+
* @author treeroot YZ:'8<
* @since 2006-2-2 m\Fb ,
* @version 1.0 5`'au61/2
*/ T{{AZV"pB
public class BubbleSort implements SortUtil.Sort{ `)!2E6 =
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/* (non-Javadoc) 2j/1@Z1j=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &Yks,2:P
*/ f.84=epv
public void sort(int[] data) { xiOrk
int temp; qMdtJ(gq
for(int i=0;i for(int j=data.length-1;j>i;j--){ xVz -_z
if(data[j] SortUtil.swap(data,j,j-1); u:H 3.5)%
} }V#9tWW
} i~Ob( YIH
} 2N8sq(LK{
} ^@LhUs>3
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} Nw$[a$^n
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选择排序: =']};
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package org.rut.util.algorithm.support; q{Ta?|x#
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import org.rut.util.algorithm.SortUtil; @uM3iO7&
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/** Hs`#{W{.
* @author treeroot !_z<W~t"
* @since 2006-2-2 /Zeg\}/4[
* @version 1.0 yZ~eLWz
*/ `_g?y)
public class SelectionSort implements SortUtil.Sort { J%-lw{FC
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/* pT;-1c%:
* (non-Javadoc) c>WpO Z,
* 'UXj\vJ3E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -G<2R"Q#N
*/ B/9<b{6
public void sort(int[] data) { IU'!?XVo
int temp; N"
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for (int i = 0; i < data.length; i++) { MHr0CYyb.
int lowIndex = i; XG\a-dq[
for (int j = data.length - 1; j > i; j--) { Vh.;p.!e
if (data[j] < data[lowIndex]) { OxHw1k
lowIndex = j; ;GgQ@s@
} 2*FWIHyf
} D.&eM4MZ
SortUtil.swap(data,i,lowIndex); ~SR(K{nf#.
} K0DXOVT\
} E%2!C/+B
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} ND55`KT4
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Shell排序: lfpt:5a9&
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package org.rut.util.algorithm.support; WP@JrnxO\`
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import org.rut.util.algorithm.SortUtil; .M53, 8X
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/** 9p\wTzA
* @author treeroot 1nlE3Y?AV
* @since 2006-2-2 sRe#{EuJ
* @version 1.0 Q!2iOvK
*/ AR+\uD=\I-
public class ShellSort implements SortUtil.Sort{ s?G'l=CcKu
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/* (non-Javadoc) $G-N0LV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WP%{{zR$
*/ d0}%%T
public void sort(int[] data) { DvRA2(M
for(int i=data.length/2;i>2;i/=2){ RqN_vk\
for(int j=0;j insertSort(data,j,i); |p8"9jN@}c
} {sfmWVp
} il>x!)?o
insertSort(data,0,1); n2y/zP>TC
} Ky'3z"
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/** /,uSCITD
* @param data Gkodk[VuLs
* @param j pT
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* @param i ;( Ajf.i
*/ gGI#QPT`X
private void insertSort(int[] data, int start, int inc) { @^:7UI_
int temp; \Sq"3_m4T
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); r_V2 J{B
} EYJ i6#
} Ot2zhR )
} mOz&6T<|
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} ~*PK080N}
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快速排序: .cH{WZ
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package org.rut.util.algorithm.support; GEe 0@q#YA
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import org.rut.util.algorithm.SortUtil;
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/** rKy-u
* @author treeroot V$-~%7@>;9
* @since 2006-2-2 1|l)gfcP
* @version 1.0 I4o=6ts
*/ ,>QMyI
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public class QuickSort implements SortUtil.Sort{ *b6I%MZn
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/* (non-Javadoc) Xew1LPI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) StdS$XW
*/ O7'<I|aD
public void sort(int[] data) { p29yaM
quickSort(data,0,data.length-1); ,{uW8L
} 6HEqm>Yau
private void quickSort(int[] data,int i,int j){ Ha=_u+@
int pivotIndex=(i+j)/2; d Y:|Ef|v(
file://swap y} $P,
SortUtil.swap(data,pivotIndex,j); %EJ\|@N:
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int k=partition(data,i-1,j,data[j]); !Ig|m+
SortUtil.swap(data,k,j); ##EB; Y
if((k-i)>1) quickSort(data,i,k-1); zldfRo\wl
if((j-k)>1) quickSort(data,k+1,j); )y%jLiQv
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} R%Ui6dCLo
/** `FzYvd"N
* @param data \ifK~?
* @param i FUyB"-<
* @param j s.R-<Y3
* @return 68koQgI[^
*/ (
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private int partition(int[] data, int l, int r,int pivot) { `x{.z=xC
do{ Sc4obcw%
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); sFQ4O- SM
SortUtil.swap(data,l,r); M1/M}~
} MG7 ?N #
while(l SortUtil.swap(data,l,r); ~|y^\U@
return l; `j&0VIU>>
} ()QOZ+x_!
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} (B_7\}v|_
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改进后的快速排序: %1-K);SJ
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package org.rut.util.algorithm.support; kCaO\#ta
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import org.rut.util.algorithm.SortUtil; A9\]3 LY
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/** b 0LGH.
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* @author treeroot DU5:+"
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* @since 2006-2-2 KP[NuXA`
* @version 1.0 GI2eJK
*/ "3{#d9Gs
public class ImprovedQuickSort implements SortUtil.Sort { >63)z I
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private static int MAX_STACK_SIZE=4096; ^[{`q9A#d
private static int THRESHOLD=10; Q0zW ]a
/* (non-Javadoc) {fGd:2dh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \H Wcd|
*/ EJf #f
public void sort(int[] data) { DA<F{n.Z:
int[] stack=new int[MAX_STACK_SIZE]; _BZ1Vnv
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int top=-1; kzZDtI)
int pivot; q"gqO%Wb|
int pivotIndex,l,r; qP~WEcH`[
,?l~rc
stack[++top]=0; _j:UGMTi(U
stack[++top]=data.length-1; R)0N0gH
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while(top>0){ "z
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int j=stack[top--]; ~bdv_|k
int i=stack[top--]; 0HGl f
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pivotIndex=(i+j)/2;
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pivot=data[pivotIndex]; :83,[;GO2
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SortUtil.swap(data,pivotIndex,j); ^4c,U9J=
0U$:>bQ
file://partition 8F#osN
l=i-1; 63W{U/*aao
r=j; bGbqfO`
do{ 2t+D8 d|c<
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Fi mN?s
SortUtil.swap(data,l,r); nz4<pvC,*
} *IC^IC:
while(l SortUtil.swap(data,l,r); A_!QrM
SortUtil.swap(data,l,j); O0^?f/&k
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if((l-i)>THRESHOLD){ WfTD7?\dw
stack[++top]=i; 10p8|9rE}B
stack[++top]=l-1; \)ip>{WG
} )uZoH8?
if((j-l)>THRESHOLD){ #
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stack[++top]=l+1; C:]s;0$3'9
stack[++top]=j; 8wr8:(Y$
} \gLxC
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} D^Te%qnW
file://new InsertSort().sort(data); w/ TKRCO3
insertSort(data); l , ..5
} {Fbg]'FQ
/** ]eE 1n2
* @param data ]kx-,M(
*/ #~L!pKM
private void insertSort(int[] data) { 5sCFzo<=vh
int temp; ;HDZ+B
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S}[l*7
} 3y99O
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} KU-'+k2s;p
} 11@]d]v ,
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} <3 A0={En
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归并排序: yL6^\x
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package org.rut.util.algorithm.support; H@GE)I>^@
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import org.rut.util.algorithm.SortUtil; 1BJ<m5/1%
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/** Ga v"C{G
* @author treeroot H$!+A
* @since 2006-2-2 Z7fg
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* @version 1.0 T-'~? [v
*/ ;f:gX`"\
public class MergeSort implements SortUtil.Sort{ +Mk#9r
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/* (non-Javadoc) l<(cd,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }Dn^d}?s||
*/ HTV ~ ?E
public void sort(int[] data) { k;k}qq`d
int[] temp=new int[data.length]; e+. \pe\
mergeSort(data,temp,0,data.length-1); l4rMk^>>
} ad9CsvW
ks*Y9D*=
private void mergeSort(int[] data,int[] temp,int l,int r){ q*,Q5
int mid=(l+r)/2; uRE*%d>
if(l==r) return ; Rf)ke("
mergeSort(data,temp,l,mid); ?7
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mergeSort(data,temp,mid+1,r); R_^/,^1
for(int i=l;i<=r;i++){ qz!Ph5(
temp=data; ]dSK
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} Bq@zaMv
int i1=l; /`[!_4i
int i2=mid+1; LvcuZZ`1a
for(int cur=l;cur<=r;cur++){ Z<U>A
if(i1==mid+1) dH\XO-Z7v
data[cur]=temp[i2++]; >O#grDXb
else if(i2>r) 24ux
data[cur]=temp[i1++]; 2?W7I/F
else if(temp[i1] data[cur]=temp[i1++]; .Pe9_ZH$W
else 7\ypW $Ot
data[cur]=temp[i2++]; PY`L$e
} hN3u@P^
} YuQ~AE'i
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