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。 !DXKn\aQf
插入排序: dYW19$W
n
BoXQBcG]w
package org.rut.util.algorithm.support; ur"ckuG!9
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import org.rut.util.algorithm.SortUtil; C}%g(YRhb
/** 6*Rz}RQ
* @author treeroot Jva&"}Cb
* @since 2006-2-2 [Cvo^cC
* @version 1.0 hK3?m.>"g
*/ \ c9EE-
public class InsertSort implements SortUtil.Sort{ *o`bBdZ
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/* (non-Javadoc) "2$C_aE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &K/5AH"q
*/ Y}Y2Vx
public void sort(int[] data) { !'[f!vsyM{
int temp; [*Wq6n
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Jr|"` f%V
} vQ$ FMKz7
} ,a_\o&V
} V_$ BZm%8J
L6O*aZ|
} 5fjmr
fMy7pXa_
冒泡排序: 9ssTG4Sa
">j}!n
8J
package org.rut.util.algorithm.support; <%Bsb}h,
9Y3_.qa(.
import org.rut.util.algorithm.SortUtil; ULNU'6
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/** UzWf_r
* @author treeroot r1}YN<+,s
* @since 2006-2-2 W^Wr
* @version 1.0 =bi:<%"
*/ g kT`C
public class BubbleSort implements SortUtil.Sort{ q]DV49UK
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/* (non-Javadoc) ia?{]!7$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c=0S]_
*/ E.R,'Y;x
public void sort(int[] data) { Ivmiz{Oii
int temp; lQ
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for(int i=0;i for(int j=data.length-1;j>i;j--){ .i)
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if(data[j] SortUtil.swap(data,j,j-1); <j+DY@*
} bx#GOK-
} 9LI#&\lba
} |7LhE+E
} .Ks%ar
L'iENZI$
} tURjIt,I
j'R{llZW
选择排序: mmE\=i~
%}elh79H*
package org.rut.util.algorithm.support; MqDz cB]
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import org.rut.util.algorithm.SortUtil; .B_LQ;0:
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/** 6vAq&Y{JB'
* @author treeroot *](maF~%C
* @since 2006-2-2 hd^?mZ
* @version 1.0 x1VBO.t=*
*/ d}2tqPy a
public class SelectionSort implements SortUtil.Sort { CoO..
gi\2bzWkbX
/* S~X&^JvT
* (non-Javadoc) ~)xg7\k
* *-'u(o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T a8;
*/ -.<fGhmU
public void sort(int[] data) { +m8CN(c
int temp; E!nEB(FD
for (int i = 0; i < data.length; i++) { va 7I_J
int lowIndex = i; j}t"M|`
for (int j = data.length - 1; j > i; j--) { 33IJbg
if (data[j] < data[lowIndex]) { -}#=L@
lowIndex = j; Jh`Pq,B:
} W6%\Zwav?)
} ur7sf$
SortUtil.swap(data,i,lowIndex); ?-C=_eZJ
} g?&_5)&
} =;Ap+}
Hj(ay48
} O=m_P}K
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Shell排序: utOATjB.z
@{/GdB,}
package org.rut.util.algorithm.support; Sp/t[\,'
r{2V`h1/|
import org.rut.util.algorithm.SortUtil; cBcfGNTJ~
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/** l ld,&N8
* @author treeroot +5~5BZP
* @since 2006-2-2 T6mbGE*IeE
* @version 1.0
ja !K2^
*/ 0i/!by{@
public class ShellSort implements SortUtil.Sort{ ),cozN=NM
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/* (non-Javadoc) d?[gd(O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^EtBo7^t
*/ v<0\+}T1R
public void sort(int[] data) { _C"=Hy{
for(int i=data.length/2;i>2;i/=2){ C.]\ 4e
for(int j=0;j insertSort(data,j,i); 4gD;X NrV
} :DWvH,{+&
} Dnk}
insertSort(data,0,1); E3hql3=
} *ay&&S*
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/** [Ey[A|g
* @param data a9LK}xc={
* @param j =f~8"j
* @param i _EHz>DJ9
*/ omdoH?
private void insertSort(int[] data, int start, int inc) { M9~eDw'Pr
int temp; +;#z"m]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); B|I9Ex~L
} =bKz$
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} XS#Jy
n
} pzr\<U`
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} )}!Z^ND*
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快速排序: dlv1liSXL5
&,*G}6wa;&
package org.rut.util.algorithm.support; ?58,Ja
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import org.rut.util.algorithm.SortUtil; mM#[XKOC<
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/** [d dKC)tA
* @author treeroot ;D8175px;
* @since 2006-2-2 &[yW}uV<7
* @version 1.0 vM3 b\yp
*/ zjE|UK{
public class QuickSort implements SortUtil.Sort{ 78~;j1^6u
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/* (non-Javadoc) Xmb001
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s2f6;Yc
*/ <Pn]{N
public void sort(int[] data) { }R&5Ye
quickSort(data,0,data.length-1); -tPia=^
} t/$:g9V%FA
private void quickSort(int[] data,int i,int j){ s2Rg-:7
int pivotIndex=(i+j)/2; g$/C-j4A[
file://swap Yq~$pVgf
SortUtil.swap(data,pivotIndex,j); Qxb%P<`u
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int k=partition(data,i-1,j,data[j]); 3*(w=;y
SortUtil.swap(data,k,j); h4,g pV>t
if((k-i)>1) quickSort(data,i,k-1); q9
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if((j-k)>1) quickSort(data,k+1,j); ~7 w"$H8
aw\0\'}
} )swu~Wb}U@
/** 1XppC[))
* @param data !+EE*-c1c
* @param i F=g+R~F
* @param j n9H4~[JiC
* @return 5mqwNAv
*/ 'g5 Gdn
private int partition(int[] data, int l, int r,int pivot) { UG !+&ii|
do{ "L9yG:
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xfzGixA
SortUtil.swap(data,l,r); Ss~yy0
} q?##S'
while(l SortUtil.swap(data,l,r); ;h~v,h
return l; EP'I
} <$>Jsv
Bj`ZH~T
} F1A7l"X]
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改进后的快速排序: a%YohfsY?U
lKSd]:3Xm
package org.rut.util.algorithm.support; h_y;NB(w
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import org.rut.util.algorithm.SortUtil; ix+sT|>
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/** ]EWEW*'j
* @author treeroot U(6=;+q
* @since 2006-2-2 I xk+y?
* @version 1.0 MszX9wl
*/ al1Nmc#
public class ImprovedQuickSort implements SortUtil.Sort { hk.vBbhs
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private static int MAX_STACK_SIZE=4096; PdD,~N#
private static int THRESHOLD=10; uGz>AW8a3
/* (non-Javadoc) ;oM7H*WC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @%b&(x^UD
*/ TbQ5
public void sort(int[] data) { Y;"rJxHD
int[] stack=new int[MAX_STACK_SIZE]; @b3jO
cii!
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int top=-1; NpAZuISD!
int pivot; X3zpU7`Av+
int pivotIndex,l,r; 0`Hr(J`F
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stack[++top]=0; lF#p1H>\
stack[++top]=data.length-1; W[SZZV_(tu
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while(top>0){ B,(zp#&yB
int j=stack[top--]; S{fFpe-
int i=stack[top--]; c( 8>|^M
?}ly`Js
pivotIndex=(i+j)/2; "CY#_)
pivot=data[pivotIndex]; Wi2Tg^
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SortUtil.swap(data,pivotIndex,j); _^MkC}8
YwaWhBCIF
file://partition b^^ .$Gu
l=i-1; U-ADdOh"q
r=j; J^gElp
do{ .H#<yPty
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (T|q]29
SortUtil.swap(data,l,r); BI|YaZa+p
} ~5]%+G
while(l SortUtil.swap(data,l,r); rHpxk
SortUtil.swap(data,l,j); Kd!.sB/%
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if((l-i)>THRESHOLD){ ,GUOq!z
stack[++top]=i; nm#,oX2C
stack[++top]=l-1; <! Z06
} 9D[Jn}E:
if((j-l)>THRESHOLD){ b]6@
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stack[++top]=l+1; uW0D m#
stack[++top]=j; NbPNcjPL
} >m+Fm=
^_c6Op<F
} AlA:MO]NM
file://new InsertSort().sort(data); y
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insertSort(data); ,X}Jpi;/
} *O'`&J
/** -*[:3%
* @param data \e9rXh%
*/ A-f,&TO
private void insertSort(int[] data) { (sqI:a
int temp; bPA >xAH
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F3e1&aK6{
} m[DCA\Mo@
} B+2EIaI
} .R]DT5
} /*U~!t
} n?:%>O s$
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归并排序: .]YTS
7q(A&
package org.rut.util.algorithm.support; a.2Xl}2o5
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import org.rut.util.algorithm.SortUtil; IXv9mr?H}
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/** K~6u5 a9s
* @author treeroot RXRoMg!-P
* @since 2006-2-2 T# .pi@PF>
* @version 1.0 K$KVm^`
*/ lWakyCS
public class MergeSort implements SortUtil.Sort{ {I8C&GS
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/* (non-Javadoc) X/ lmj_v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tID=I0D
*/ "\+.S]~
public void sort(int[] data) { C7FxV2
int[] temp=new int[data.length]; T^icoX=c4
mergeSort(data,temp,0,data.length-1); nc^DFP
} +_1sFH`
weH3\@
private void mergeSort(int[] data,int[] temp,int l,int r){ hgK
4;R
int mid=(l+r)/2; =Q*x=}NH
if(l==r) return ; s#H_QOE
mergeSort(data,temp,l,mid); 0.[tEnLZ
mergeSort(data,temp,mid+1,r); qLV3Y?S!L
for(int i=l;i<=r;i++){ CE @[Z
temp=data; }<^QW't_Y
} "0 $UnR
int i1=l; Y94S!TbB
int i2=mid+1; Z&of-[)
for(int cur=l;cur<=r;cur++){ &B\ sG=
if(i1==mid+1) Ab6R ?mUM
data[cur]=temp[i2++]; 1Qw_P('}
else if(i2>r) 55FRPNx-x
data[cur]=temp[i1++]; sC A
else if(temp[i1] data[cur]=temp[i1++]; =Z ql6D
else E=Vp%08(
data[cur]=temp[i2++]; L1Jn@
} us E%eF]
} hHZ'*,9 y
nH<#MGBS
} 8S7#tb@3
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改进后的归并排序: iK=QP+^VN
qOy0QZ#0
package org.rut.util.algorithm.support; [
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import org.rut.util.algorithm.SortUtil; JvK]EwR
;
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/** 1m5*MY
* @author treeroot n,d)Wwe_`y
* @since 2006-2-2 n(`|:h"
* @version 1.0 "n_X4e+18P
*/ v-BQ>-& s
public class ImprovedMergeSort implements SortUtil.Sort { %>$Puy\U
*`8JJs0g
private static final int THRESHOLD = 10; loC~wm%Ql
D^gS.X ^
/* [X91nUz#
* (non-Javadoc) wh)F&@6 R!
* 0*_E'0L8e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,OERDWW|6
*/ |Sm/s;&c6
public void sort(int[] data) { ]6F\a= J
int[] temp=new int[data.length]; f>bL
}L
mergeSort(data,temp,0,data.length-1); A'.=SA2.Y
} H~^)^6)^T
}V[ORGzox
private void mergeSort(int[] data, int[] temp, int l, int r) { l6L?jiTl_
int i, j, k; PQp =bX,
int mid = (l + r) / 2;
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if (l == r) p{}4#+-<#H
return; A $ ]s{`
if ((mid - l) >= THRESHOLD) (k8}9[3G
mergeSort(data, temp, l, mid); X`1R&K;z^
else XDHi4i47`o
insertSort(data, l, mid - l + 1); 050,S`%<g8
if ((r - mid) > THRESHOLD) tHAe
mergeSort(data, temp, mid + 1, r); yRIXUCy
else ({Pjz;xM
insertSort(data, mid + 1, r - mid); a9UXg<4
^,#my<{
for (i = l; i <= mid; i++) { !JyY&D~`
temp = data; ]jYFrOMy4S
} SZEi+CRs0
for (j = 1; j <= r - mid; j++) { J!2j]?D/e
temp[r - j + 1] = data[j + mid]; %pxO<O
} Nk<^ Qv
int a = temp[l]; 4"_`Mu_%
int b = temp[r]; aZ+><1TD
for (i = l, j = r, k = l; k <= r; k++) { 9?8PMh.
if (a < b) { b+|3nc!
data[k] = temp[i++]; 2:_6nWl
a = temp; =#v? }JG
} else { mBE&>}G<
data[k] = temp[j--]; ^5.XQ0n
b = temp[j]; dI&Q5M8
} TL)*onA9
} (0B?OkQ
} DzQ
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/** #fYB4.i~
* @param data tc<uS%XT4^
* @param l 6pSi-FH
* @param i N0.|Mb"?t
*/ E5$]0#jB
private void insertSort(int[] data, int start, int len) { ?3p7MjvZ
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;AE-=/<
} 4(|yl^w
} nYFrp)DLK
} wD=]U@t`,
} I# &r5Q
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堆排序: M
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package org.rut.util.algorithm.support; u '7h(1@
kQ lU.J>^
import org.rut.util.algorithm.SortUtil; '*`#xNu[
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/** >WIc"y.
* @author treeroot xbm%+
* @since 2006-2-2 ]S%(l,
* @version 1.0 l6y}>]
*/ PO`p.("h
public class HeapSort implements SortUtil.Sort{ C+llA
}Nsdk',}
/* (non-Javadoc) D%abBE1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) USEb} M`
*/ j/z=<jA
public void sort(int[] data) { >m>F {v
MaxHeap h=new MaxHeap(); ca{MJz'
h.init(data); _ i}W1i
for(int i=0;i h.remove(); l2qvYNMw
System.arraycopy(h.queue,1,data,0,data.length); N,c!1:b
} D2?H"PH
)63
$,y-;$
private static class MaxHeap{ dPwyiV0
kIVQ2hmv
void init(int[] data){ H*'1bLzq
this.queue=new int[data.length+1]; iCE!TmDT
for(int i=0;i queue[++size]=data; jYFJk&c
fixUp(size); \&5V';
} !Aw^X} C
} b,E ?{uG
D &"D[|@
private int size=0; y
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private int[] queue; _cX}!d!j
@"-\e|[N
public int get() { \</!kY*3@t
return queue[1]; kFv*>>X`
} Zd6ik&S
P[2!D)A
public void remove() { T&?g)
SortUtil.swap(queue,1,size--); NOo?
fixDown(1); (Jk&U8y
} q(6.VU@
file://fixdown <w{?b'/q
private void fixDown(int k) { /ce;-3+
int j; c Mgd
while ((j = k << 1) <= size) { #wI}93E
if (j < size %26amp;%26amp; queue[j] j++; d+
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if (queue[k]>queue[j]) file://不用交换 _x!idf
break; "XR=P>
xk
SortUtil.swap(queue,j,k); wlT8|
k = j; STp9Gh-
} L~Gr,i
} #h5lz%2g
private void fixUp(int k) { m&:&z7^p
while (k > 1) { mG jB{Q+
int j = k >> 1; tWIs
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if (queue[j]>queue[k]) :V(LBH0
break; 0O9b
7F
SortUtil.swap(queue,j,k); C#kE{Qw10r
k = j; ^#HaH
} #ES[),+|mB
} H<(F$7Q!\
68Fl/
} j
uA@"SG
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oVF'
} Q":_\inF
Alxf;[s
SortUtil: BNfj0e 5b
V\cbIx(Z^
package org.rut.util.algorithm; HwUaaK
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import org.rut.util.algorithm.support.BubbleSort; wa"0`a:`;
import org.rut.util.algorithm.support.HeapSort; rwRZGd *p
import org.rut.util.algorithm.support.ImprovedMergeSort; ^dI;B27E*
import org.rut.util.algorithm.support.ImprovedQuickSort; CS7b3p!I
import org.rut.util.algorithm.support.InsertSort; CO
wcus
import org.rut.util.algorithm.support.MergeSort; V eGSr
import org.rut.util.algorithm.support.QuickSort; (?jK|_
import org.rut.util.algorithm.support.SelectionSort; ';tlV
u
import org.rut.util.algorithm.support.ShellSort; n<.7tr0f\
/)ZjI
W"|
/** FDMQLx f
* @author treeroot Z hfp>D
* @since 2006-2-2 Uwc%'=@
* @version 1.0 Lce,]z\_
*/ g\q .
public class SortUtil { AY AU
public final static int INSERT = 1; \@gV$+{9
public final static int BUBBLE = 2; ,:?ibE=
public final static int SELECTION = 3; J,=K1>8s
public final static int SHELL = 4; hX.cdt_?
public final static int QUICK = 5; /5NWV#-
public final static int IMPROVED_QUICK = 6; 'Z{`P0/^o`
public final static int MERGE = 7; kL'4m
public final static int IMPROVED_MERGE = 8; ~H}Z;n]H
public final static int HEAP = 9; OrkcY39"~a
C4mkt2Eb0a
public static void sort(int[] data) { gP%<<yl
sort(data, IMPROVED_QUICK); 3:,%>#"
} )Te\6qM
private static String[] name={ ~7:q+\
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `<YMkp[
}; QVT0.GzR
G\sx'#Whc
private static Sort[] impl=new Sort[]{ w
<r*&
new InsertSort(), uw+nll*W%
new BubbleSort(), >z<L 60S
new SelectionSort(), q,P.)\0A
new ShellSort(), /!]K+6>u
new QuickSort(), 7X$CJ%6b
new ImprovedQuickSort(), iC#a+G*N_M
new MergeSort(), 1)z'-dQ-5$
new ImprovedMergeSort(), f(Xin3#'
new HeapSort() T9yI%;D
}; PaTOlHr
$DDO9
public static String toString(int algorithm){ 8-;.Ejz!\A
return name[algorithm-1]; ,RPb<3
B
} f#s 6 'g
)z7CT|h7S
public static void sort(int[] data, int algorithm) { `wi+/^);
impl[algorithm-1].sort(data); 1uo-?k
} 4e#g{,
< se ~wR
public static interface Sort { mS%4
public void sort(int[] data); qz`-?,pF
} LQF;T7VKS)
02]HwsvZ
public static void swap(int[] data, int i, int j) { <aPZE6z
int temp = data; aj?ZVa6
data = data[j]; WL+EpNKSf
data[j] = temp; 4 $k{,
} Id?-Og2iV
} /Z2u0jNArP