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。 ,4Qct=%L_
插入排序: t(r}jU=qw
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package org.rut.util.algorithm.support; vf/|b6'y
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import org.rut.util.algorithm.SortUtil; [l:}#5\]4
/** /~}<[6ZGCY
* @author treeroot h:~
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* @since 2006-2-2 w)Wg 8
* @version 1.0 z z2'h>
*/ ]~t4E'y)z
public class InsertSort implements SortUtil.Sort{ ]Z=O+7(r
8%#pv}
/* (non-Javadoc) 6sz:rv}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /4%ycr6
*/ `71(wf1q[f
public void sort(int[] data) { zwJK|S k
int temp; ty-erdsP
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U "kD)\
} a@s@E
} !rPU5y*
} q-R'5p\C?|
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} aZB$%#'vR
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冒泡排序: dH_g:ocA
]mdO3P
package org.rut.util.algorithm.support; MGfIA?u
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import org.rut.util.algorithm.SortUtil; *z6m644H
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/**
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* @author treeroot I`4k5KB;
* @since 2006-2-2 Q@5v> `
* @version 1.0 X(dHhO
*/ D+('1E?
public class BubbleSort implements SortUtil.Sort{ 6hAMk<kx?i
CA5q(ID_
/* (non-Javadoc) O#3PUuE%d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +xn59V
*/ c(r8
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public void sort(int[] data) { tr-muhuK
int temp; vuO~^N]G
for(int i=0;i for(int j=data.length-1;j>i;j--){ M.0N`NmS
if(data[j] SortUtil.swap(data,j,j-1); P2=u-{?~
} m(p0)X),_i
} ,;~@t:!c
} ZDTp/5=?K/
} J*m~fZ^
3 Q~zli:
} /Q\|u:oO,
sQgJ`+Y8_
选择排序: &LDA=B
idSc#n22
package org.rut.util.algorithm.support; |tdsg
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import org.rut.util.algorithm.SortUtil; YW'l),Z
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/** cByUP#hW
* @author treeroot XG;Dj<Dm
* @since 2006-2-2 Lu9`(+
* @version 1.0 x{I,
gu|+
*/ QrRnXlEM8
public class SelectionSort implements SortUtil.Sort { |P(8T'
tde&w=ec
/* )A=&3Ui)ab
* (non-Javadoc) S/)yi
* {^_K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /\d@A B^5I
*/ rkWiGiisM
public void sort(int[] data) { qz&?zzz;
int temp; #v}pn2g%>
for (int i = 0; i < data.length; i++) { / MV2#P@
int lowIndex = i; @JU
Xp
for (int j = data.length - 1; j > i; j--) { -Gd@baV
if (data[j] < data[lowIndex]) { Bf8[(oc~
lowIndex = j; a}5/?/
} LQXMGgp
} `*w!S8} m;
SortUtil.swap(data,i,lowIndex); UB3hC`N\
} y?ypRCgO.u
} ak$D1#hY
B(,j*,f
} jWcfQ
cxc-|Xori
Shell排序: Bz4;R9_%I
Y20T$5{#
package org.rut.util.algorithm.support; Q1[EiM3
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import org.rut.util.algorithm.SortUtil; UIK4]cYC'
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/** QW=
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* @author treeroot *IIuGtS
* @since 2006-2-2 /A1qTG=Br
* @version 1.0 jYE
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*/ +XpQ9Cd
public class ShellSort implements SortUtil.Sort{ @
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O[W/=j[
/* (non-Javadoc) Eu`K2_b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q(/F7"m
*/ [1g
public void sort(int[] data) { O~D]C
for(int i=data.length/2;i>2;i/=2){ k@^T<Ci
for(int j=0;j insertSort(data,j,i); e7M6|6nb
} :aWC6"ik-W
} b{a\j%
insertSort(data,0,1); jq(QL%)_O
} F~wqt7*
36\_Y?zx%
/** PYr'1D'
* @param data bj7r"_
* @param j =PYS5\k
* @param i rFhi:uRV
*/ ~qkn1N%'
private void insertSort(int[] data, int start, int inc) { BjV;/<bt
int temp; 1-~sj)*k
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); q" @%W K
} l^R1XBP
} iHlee=}od
} F5%IsAH
StU9r0`
} gfQ1p ?
0`Y"xN`'i
快速排序: b_']S0$c\
PE<(eIr
package org.rut.util.algorithm.support; WP >VQZ&
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import org.rut.util.algorithm.SortUtil; 7.bPPr&
8SoTABHV
/** 7',WLuD
* @author treeroot Qq3UC%Z1
* @since 2006-2-2 Ue(\-b\)
* @version 1.0
>f*Zf(F
*/ {ZKXT8'
public class QuickSort implements SortUtil.Sort{ ZiC~8p_f
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/* (non-Javadoc) \-CL}Z}S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 91M5F$
*/ a]@BS6
public void sort(int[] data) { )wCV]TdF
quickSort(data,0,data.length-1); 6xoCB/]
} aRcVoOq
private void quickSort(int[] data,int i,int j){ ]K|td)1X
int pivotIndex=(i+j)/2; G<Y}QhFU
file://swap K[l5=)G0L
SortUtil.swap(data,pivotIndex,j); 'M,O(utGv
qv3% v3\4
int k=partition(data,i-1,j,data[j]); U &RZx&W
SortUtil.swap(data,k,j); ;nAI;Qw L
if((k-i)>1) quickSort(data,i,k-1); PLRMW2
if((j-k)>1) quickSort(data,k+1,j); o<Qt<*
;@H:+R+(
} \nU_UH
/** qe |U*K
2_
* @param data g9gi7.'0
* @param i x+EEMv3u:
* @param j G{gc]7\=Cd
* @return >J/8lS{#
*/ :H>0/^Mg0
private int partition(int[] data, int l, int r,int pivot) { /]-a 1
do{ w#{S=^`}
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~8U 0(n:^
SortUtil.swap(data,l,r); lPw`KW
} 3<_=Vyf
while(l SortUtil.swap(data,l,r); GezMqt;2
return l; HNd? '
} VM<$!Aaz
d fSj= 4
} #@J{ )
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改进后的快速排序: ~W-5-Nl{s
C4)m4r%
package org.rut.util.algorithm.support; P4fnBH4OQ
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import org.rut.util.algorithm.SortUtil; 4@QR2K|
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/** ?X$*8;==6
* @author treeroot h!?rk|
* @since 2006-2-2 fWyXy%Qq
* @version 1.0 *
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*/ .$o
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public class ImprovedQuickSort implements SortUtil.Sort { 7G%:ckg
_pxurq{
private static int MAX_STACK_SIZE=4096; v^B2etiX_
private static int THRESHOLD=10; 6eb~Z6n&?
/* (non-Javadoc) (U@$gkUx}G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O bc>f|l]
*/ _gw paAJ
public void sort(int[] data) { 1p8hn!V
int[] stack=new int[MAX_STACK_SIZE]; a}X.ewg
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int top=-1; c$x>6&&L
int pivot; bu{dT8g'U
int pivotIndex,l,r; -t: U4r(
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stack[++top]=0; !C ZFbz~:
stack[++top]=data.length-1; AWd,qldv
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while(top>0){ d>V#?1$h
int j=stack[top--]; 6Ad=#MM
int i=stack[top--]; !|8"}ZF
[Y.=bfV!
pivotIndex=(i+j)/2; XSGBC:U)l
pivot=data[pivotIndex]; L3A2A
{W HK|l
SortUtil.swap(data,pivotIndex,j); J$lfI^^
45&Rl,2
file://partition 3,n" d-
l=i-1; KDb`g}1Q
r=j; ~K"nm {.
do{ !j}L-1*{ l
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Hbn78,~.
SortUtil.swap(data,l,r); k5Su&e4]]
} Cj$:TWYIh[
while(l SortUtil.swap(data,l,r); s+(@UUl
SortUtil.swap(data,l,j); 0o:R:*
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if((l-i)>THRESHOLD){ }Rw6+;
stack[++top]=i; RhC|x,E
stack[++top]=l-1; $Ggnn#
} JKy~'>Q
if((j-l)>THRESHOLD){ .R
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stack[++top]=l+1; a$Hq<~46
stack[++top]=j; lQEsa45
} 7O:g;UI#
IR#BSfBZ
} Dt{WRe\#
file://new InsertSort().sort(data); hRMya#%-
insertSort(data); =3`|D0E
} 9M5W4&
/** \BN$WV
* @param data r=~K#:66
*/ w*&vH/D
private void insertSort(int[] data) { i,S1|R
int temp; uB#U(
jl
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WA0D#yuJ/
} pb)kN%
} 43]y]/do
} ;<_a ,5\Q
HUAYtUBH
} Js vdC]+
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归并排序: Y}:4y$<
Ga-cto1Y
package org.rut.util.algorithm.support; v/=\(
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import org.rut.util.algorithm.SortUtil;
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/** {dm>]@"S
* @author treeroot j/fniyJ)
* @since 2006-2-2 x)GheM^
* @version 1.0 "j8)l4}
*/ H%gAgXHn
public class MergeSort implements SortUtil.Sort{ m C`*#[
"|[9 Q?
/* (non-Javadoc) ZWo~!Z [Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >TY;l3ew
*/ N5,LHO
public void sort(int[] data) { cjJfxD&q
int[] temp=new int[data.length]; GqR|hg
mergeSort(data,temp,0,data.length-1); lWtfcU?S[
} q7f`:P9~
2[HPU M2>
private void mergeSort(int[] data,int[] temp,int l,int r){ ,[zSz8R
int mid=(l+r)/2; I`H&b&
.`
if(l==r) return ; ENIg_s4
mergeSort(data,temp,l,mid); AvB=/p@]
mergeSort(data,temp,mid+1,r); cv-rEHT
for(int i=l;i<=r;i++){ u~ipB*Zf
temp=data; 5RFro^S9E
} X% j`rQk`
int i1=l; \Ta5c31S+
int i2=mid+1; *1{A'`.=\
for(int cur=l;cur<=r;cur++){ ]& ckq
if(i1==mid+1) yxHo0U
data[cur]=temp[i2++]; @#OL{yMy
else if(i2>r) ,;Wm>V)o
data[cur]=temp[i1++]; ^4+NPk
else if(temp[i1] data[cur]=temp[i1++]; GIH{tr1:<
else (${ #l
data[cur]=temp[i2++]; fmj}NV&ma
} k6&~)7 -f
} Zk((VZ(y
;!A8A4~nu
} N%}J:w
]tN)HRk1
改进后的归并排序: `G1"&q,i
q
i yK
package org.rut.util.algorithm.support; RQ=$,
i`
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import org.rut.util.algorithm.SortUtil; 7PMz6
g:ky;-G8b
/** os"R'GYmf
* @author treeroot Ig}hap]G
* @since 2006-2-2 S',h*e
* @version 1.0 BInSS*L
*/ ?D _4KFr
public class ImprovedMergeSort implements SortUtil.Sort { RU7+$Z0K
?.Vuet
private static final int THRESHOLD = 10; M$%ON>Kq
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/* JxtzI2
* (non-Javadoc) j0}wv~\
* @i!+Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Awxm[:r>^
*/ X^N6s"2
public void sort(int[] data) { klnNBo!
int[] temp=new int[data.length]; e}yF2|0FD
mergeSort(data,temp,0,data.length-1); 7;q0'_G
} GqL&hbpi
_Sfu8k>):
private void mergeSort(int[] data, int[] temp, int l, int r) { $I*}AUp
v?
int i, j, k; jyW={%&
int mid = (l + r) / 2; Mb2a;s
if (l == r) /)J]ItJlz
return; M?sax+'
if ((mid - l) >= THRESHOLD) kE'p=dXx
mergeSort(data, temp, l, mid); ]vz6DJs
else 1a(\F7
insertSort(data, l, mid - l + 1); &?bsBqpN
if ((r - mid) > THRESHOLD) _]o7iqtv
mergeSort(data, temp, mid + 1, r); N.q~\sF^
else ^g6v#]&WA
insertSort(data, mid + 1, r - mid); PWl;pBo
i=#\`"/
for (i = l; i <= mid; i++) { vc|tp_M67
temp = data; ,dQ*0XO!
} \-]Jm[]^
for (j = 1; j <= r - mid; j++) { I2CI9,0
temp[r - j + 1] = data[j + mid]; ffL]_E
} WuY#Kx~2
int a = temp[l]; qzxWv5UH
int b = temp[r]; J&~I4ko]
for (i = l, j = r, k = l; k <= r; k++) { 4z5qXI/<m4
if (a < b) { e_ epuki
data[k] = temp[i++]; D? %*L
a = temp; /r'Fq
=z
} else { VdM Ksx`r
data[k] = temp[j--]; jm<^WQ%Cc
b = temp[j]; (Ud"+a
} $!9U\Au>2
} N*Q*>q
} h/\Zq
%IVM1
/** 4K:Aqqhds
* @param data oe^JDb#
* @param l GPh;r7xg6
* @param i #]c_2V
*/ ""
^n^$
private void insertSort(int[] data, int start, int len) { TxQsi"0c
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); t&43)TPb.
} sYXLVJ>b
} <ndY6n3
} Z<d=v3q
} 9s5s;ntz"
P|ibUxSA~,
堆排序: 8u)>o*
:
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package org.rut.util.algorithm.support; qmnl
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import org.rut.util.algorithm.SortUtil; ~P}ng{x4z
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nR3E
/** P*;[&Nn4
* @author treeroot KI\bV0$p<
* @since 2006-2-2 b(@GKH"W
* @version 1.0 <nk/w5nKL
*/ DS4y@,/)'
public class HeapSort implements SortUtil.Sort{ v\9f 8|K
e9'0CH<
/* (non-Javadoc) t
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B)DuikV.D
*/ :/Pxf N5
public void sort(int[] data) { I+Yq",{%
MaxHeap h=new MaxHeap(); fA1{-JzV<4
h.init(data);
N6BOUU]
for(int i=0;i h.remove(); M7Xn=jc
System.arraycopy(h.queue,1,data,0,data.length); =`(W^&|
} UT{`'#iT
4yTgH0(T
private static class MaxHeap{ Zr6.Nw
aEa.g.SZ
void init(int[] data){ .P5'\
this.queue=new int[data.length+1]; mIrN~)C4\
for(int i=0;i queue[++size]=data; +:aNgO#e8
fixUp(size); w?*79 u
} wLI1qoDM
} _2<UcC~
/74h+.amg
private int size=0; 3=Uy t
Dwr" -
private int[] queue; 7GErh,
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public int get() { CQ{{J{pU"
return queue[1]; 3U!=R-
} *L Y6hph"
7@k3-?q
public void remove() { g "c7$
SortUtil.swap(queue,1,size--); /Ah'KN|EN
fixDown(1); cc1M9kVi
} udc9KuR@
file://fixdown NMC0y|G
private void fixDown(int k) { \PG_i' R
int j; 'V <ZmJ2
while ((j = k << 1) <= size) { ~Dw%
d;
if (j < size %26amp;%26amp; queue[j] j++; xwHE,ykE
if (queue[k]>queue[j]) file://不用交换 Y;E'gP-J
break; *xj2Z,u
SortUtil.swap(queue,j,k); \O,yWyU4
k = j; v:9'k~4)
} 6o(.zk`d
} <*/Z>Z_c2
private void fixUp(int k) { qwn EVjf
while (k > 1) { QvOl-Lfc
int j = k >> 1; $
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if (queue[j]>queue[k]) `fG<iBD
break; +br'
2Pn
SortUtil.swap(queue,j,k); 9JILK9mVO
k = j; ]n:R#55A
} W(-son~I
} Znh;#%n|
#~qzaETv,
} CC$rt2\e
`/i/AZ{
} 3.ShAL
,KPrUM}
SortUtil: gt~u/Z%
hD, |CQ
package org.rut.util.algorithm; *UG?I|l|I
~u[1Vz4#3
import org.rut.util.algorithm.support.BubbleSort; VOg'_#I
import org.rut.util.algorithm.support.HeapSort; zx+}>(U\U
import org.rut.util.algorithm.support.ImprovedMergeSort; #P!M"_z
import org.rut.util.algorithm.support.ImprovedQuickSort; /,$V/q+
import org.rut.util.algorithm.support.InsertSort; )}_}D+2
import org.rut.util.algorithm.support.MergeSort; :RBeq,QaO
import org.rut.util.algorithm.support.QuickSort; #%#N.tB5
import org.rut.util.algorithm.support.SelectionSort; sP=^5K`g
import org.rut.util.algorithm.support.ShellSort; |;p.!FO
3e\IRF xzb
/** A
;|P\V
* @author treeroot OekE]`~w
* @since 2006-2-2 @2_E9{ T
* @version 1.0 <KoOJMx(
*/ 45jImCm
public class SortUtil { _?I*::
I
public final static int INSERT = 1; #2Iw%H 2q&
public final static int BUBBLE = 2; #60gjHYaV
public final static int SELECTION = 3; hx:^xW@r4P
public final static int SHELL = 4; hC]:+.Q+
public final static int QUICK = 5; }"kF<gG1
public final static int IMPROVED_QUICK = 6; )%8st'
public final static int MERGE = 7; L EFLKC
public final static int IMPROVED_MERGE = 8; >S{8sN
public final static int HEAP = 9; t/3qD7L
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public static void sort(int[] data) { P{StF`>Y
sort(data, IMPROVED_QUICK); 'S&Zq:
} ={o)82LV
private static String[] name={ zzd PR}VG
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" um( xZ6&m
}; GsiKL4|mj
t2m7Yh5B
private static Sort[] impl=new Sort[]{ qc';<
new InsertSort(), VAqZ`y
new BubbleSort(), zpzxCzU
new SelectionSort(), )YwLj&e4tf
new ShellSort(), Ya!PV&"Z
new QuickSort(), g{K \
new ImprovedQuickSort(), g{kjd2
new MergeSort(), yOk{l$+
new ImprovedMergeSort(), Gj[5ew?@
new HeapSort() WB `h)
}; PO:sF]5
M.EL^;r
public static String toString(int algorithm){ 6k{gI.SG
return name[algorithm-1]; f=8{cK0j
} ~I~lb/
(iJ
/
public static void sort(int[] data, int algorithm) { m5,&;~
impl[algorithm-1].sort(data); +NeoGnj
} ;sx4w!Y,
tOo\s&j
public static interface Sort { R+.kwq3CED
public void sort(int[] data); ]c6h'}
} ~b4kV)[ q
!lM.1gTTC
public static void swap(int[] data, int i, int j) { ,&Vir)S
int temp = data; 8~|v:qk
data = data[j]; 'rVB2
`z-
data[j] = temp; -av=5hm
} 1hc`s+N
} Fw#1?/K~