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。 FQ>kTm`d
插入排序: t3!OqM
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package org.rut.util.algorithm.support; E%(s=YhW
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import org.rut.util.algorithm.SortUtil; ,
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/** ;l1.jQh
* @author treeroot =j{tFxJ
* @since 2006-2-2 ?"^{:~\N
* @version 1.0 [?hvx}
*/ xXc>YTK'
public class InsertSort implements SortUtil.Sort{ rHM^_sYRb
& Zn`2%
/* (non-Javadoc) h@Jg9AM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4U_+NC>b
*/ S>>wf:\ c
public void sort(int[] data) { LR{bNV[i
int temp; :8]8[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V0rQtxE{F
} .k-6LR
} w@&z0ODJ
} M^Y[Y@U=p
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} U<Tv<7`
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冒泡排序: [^?i<z{0C
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package org.rut.util.algorithm.support; (9oo8&GG
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import org.rut.util.algorithm.SortUtil; qHp2;
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/** Lui6;NY
* @author treeroot {lH'T1^m
* @since 2006-2-2
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* @version 1.0 Z5n-3h!+ED
*/ j~1K(=Ng
public class BubbleSort implements SortUtil.Sort{ xZ)K#\
u<uc"KY=
/* (non-Javadoc) `kxC#
&HO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fv#ov+B
*/ auc:|?H~1n
public void sort(int[] data) { Exqz$'(W9
int temp; S6(48/
for(int i=0;i for(int j=data.length-1;j>i;j--){ <W!n lh
if(data[j] SortUtil.swap(data,j,j-1); 87[ ,.W
} =
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} rh1PpsSc
} Jw@X5-(Cp
} |n)4APX\Q
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} >;1w-n
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选择排序: o-Dfud@
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package org.rut.util.algorithm.support; XVt;hO
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import org.rut.util.algorithm.SortUtil; x}pH'S7
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/** \fEG5/s}T
* @author treeroot kJJiDDL0;*
* @since 2006-2-2 G-2~$ u
* @version 1.0 q[VQ?b~9
*/ l"E{ ?4
public class SelectionSort implements SortUtil.Sort { }dzVwP=
p?>J86%[
/* $3l#eKZA
* (non-Javadoc) .z_nW1id
* {Kr}RR*{X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~`&4?c3p
*/ ;"0bVs`.^e
public void sort(int[] data) { *X$qgSW
int temp; >QvqH 2
for (int i = 0; i < data.length; i++) { 1Z)P.9c
int lowIndex = i; hWbu
Z%
for (int j = data.length - 1; j > i; j--) { { 22ey`@`h
if (data[j] < data[lowIndex]) { y\;oZ]J
lowIndex = j; .<>t2,Af
} ;"Qq/knVL
} _g/d/{-{Q
SortUtil.swap(data,i,lowIndex); >*gf1"
} SF*mY=1
} KTT!P 4
BM:p)%Pv#P
} d*Su
c
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Shell排序: F/lL1nTdK
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package org.rut.util.algorithm.support; ?>*d82yO
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import org.rut.util.algorithm.SortUtil; i^jM9MAi
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/** Lf^
7|
* @author treeroot Y=<ABtertS
* @since 2006-2-2 ~FYC'd
* @version 1.0 *!y04'p`<
*/ c^1JSGv
public class ShellSort implements SortUtil.Sort{ OfBWf6b
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/* (non-Javadoc) 89D`!`Ah]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3{co.+
*/ rwUhNth-Qh
public void sort(int[] data) { ^0>^5l'n
for(int i=data.length/2;i>2;i/=2){ T+P{,,a/]
for(int j=0;j insertSort(data,j,i); uGXvP(Pg'
} SGZYDxFC@
} EJC}"%h
insertSort(data,0,1); um]*nXIr
} 1_LKqBgo
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/** "~=}&
* @param data T<7}IH$6xE
* @param j E#m^.B-}
* @param i YK8l#8K
*/ gM1:*YK
private void insertSort(int[] data, int start, int inc) {
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int temp; CpN*1s})d
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); XU}i<5
} \)\n5F:Zu
} E5P.x^
} nY1PRX\
xP1D 9
} aMydeTCHi
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快速排序: "N%W5[C{
j^ 8Hjg
package org.rut.util.algorithm.support; 7SkW!5
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import org.rut.util.algorithm.SortUtil; md{1Jn"
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/** 6@^
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* @author treeroot B\AyG4J
* @since 2006-2-2 r\b$/:y<e
* @version 1.0 -6F\=
*/ Ve[Kv07
public class QuickSort implements SortUtil.Sort{ :X9;KoJl-V
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/* (non-Javadoc) Rb
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u5qaLHoEP
*/ su\Lxv
public void sort(int[] data) { Aj\m57e,6
quickSort(data,0,data.length-1); >/GYw"KK
} O&.gc p!
private void quickSort(int[] data,int i,int j){ uKIR$n"
int pivotIndex=(i+j)/2; ri"=)]
file://swap x51p'bNy
SortUtil.swap(data,pivotIndex,j); !_o1;GzK
yP@#1KLa+
int k=partition(data,i-1,j,data[j]); YL;*%XmAG
SortUtil.swap(data,k,j); =}0>S3a.7
if((k-i)>1) quickSort(data,i,k-1); \@ZD.d#
if((j-k)>1) quickSort(data,k+1,j); q,Nqv[va
GZ:1bV37%
} Vz,"vBds
/** pDr/8HEh
* @param data 9WoTo ,q
* @param i J{uqbrJICr
* @param j "el3mloR8
* @return %kBrxf
*/ +@Kq
private int partition(int[] data, int l, int r,int pivot) { jw2hB[WR
do{ S|RUc}(
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Jn0L_@
SortUtil.swap(data,l,r); Fok`-U
} LwQYO'X
while(l SortUtil.swap(data,l,r); ~ebm,3?
return l; 1RQM-0W,
} ,8p-EH
S^e e<%-
} #{bT=:3a
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改进后的快速排序: Z79Y$d>G<E
H0lAu]~R_W
package org.rut.util.algorithm.support; 7&|&y
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import org.rut.util.algorithm.SortUtil; [DSzhi]
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/** Wc##.qU
* @author treeroot Dm;aTe
* @since 2006-2-2 8`b_,(\ N
* @version 1.0 _ =O;Lz$x
*/ :bp8S@
public class ImprovedQuickSort implements SortUtil.Sort { >Cr'dKZ}
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private static int MAX_STACK_SIZE=4096; Z=s]@r
private static int THRESHOLD=10; #k)J);&ZA
/* (non-Javadoc) 8g_GXtn(z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /Q9iO&Vu
*/ +r =p,leb
public void sort(int[] data) { g9gyx/'*
int[] stack=new int[MAX_STACK_SIZE]; Bd13p_V"6
j =b-Y
int top=-1; #5IfF~*i
int pivot; i'Q 4touy
int pivotIndex,l,r; 9;pD0h|
:?gk=JH:
stack[++top]=0; Q;p%
VQ
stack[++top]=data.length-1; CM%;r5
+u7nx
while(top>0){ za4:Jdr
int j=stack[top--]; V@ph.)z
int i=stack[top--]; =G/`r!r*0I
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pivotIndex=(i+j)/2; f'M7x6W
pivot=data[pivotIndex]; 3:P "6mN
G?yG|5.pU
SortUtil.swap(data,pivotIndex,j); 1FEY&rpR
s\1c.
file://partition N^tH&\G\m
l=i-1; a: OuDjFp
r=j; h IUO=f
do{ [E%Ov0OC
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); z 4`H<Pn
SortUtil.swap(data,l,r); e#uF?v]O
} |S VL%agZ
while(l SortUtil.swap(data,l,r); RT=(vq @
SortUtil.swap(data,l,j); w8AHs/'r
F1zsGlObu}
if((l-i)>THRESHOLD){ e~BUAz
stack[++top]=i; 8 =<&9TmE
stack[++top]=l-1; Y)v_O_`
} wd~!j&`a
if((j-l)>THRESHOLD){ 3HmJixy
stack[++top]=l+1; SE!0f&
stack[++top]=j; *e-+~/9~
} VbzW4J_
Jyu*{
} {[.<BU-
file://new InsertSort().sort(data); wS1zd?
insertSort(data); a<`s'N1G
} k39;7J
/** &!FWo@
* @param data ?wS/KEl=O
*/ q]o^Y
private void insertSort(int[] data) { |b:91l
int temp; $5/lU
}To
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FY;R0+N
} V2|XcR
} !
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} '&$xLZ8
ZiOL7#QWX
} h wfKgsm
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归并排序: 1
9C=' TMS
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package org.rut.util.algorithm.support; %CiZ>`5n#
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import org.rut.util.algorithm.SortUtil; C_DXg-a2lu
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/** ep2#a#&'
* @author treeroot t<2B3&o1
* @since 2006-2-2 eE-@dU?
* @version 1.0 $]yHk
*/ 'hi.$G_R
public class MergeSort implements SortUtil.Sort{ =m?x|Zc_v
!,< )y}L^)
/* (non-Javadoc) ?5g0#wqI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jk!*j
*/ I=I'O?w
public void sort(int[] data) { !*C9NX
int[] temp=new int[data.length]; x7]Yn'^'
mergeSort(data,temp,0,data.length-1); &*#- %<=1
} !
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AGxG*KuZ
private void mergeSort(int[] data,int[] temp,int l,int r){ #2023Zo]
int mid=(l+r)/2; wfxg@<WR
if(l==r) return ; Z>H
y+Q4
mergeSort(data,temp,l,mid); \{ui{8+G
mergeSort(data,temp,mid+1,r); ?xuhN
G@
for(int i=l;i<=r;i++){ %kJ_o*"
temp=data; n^AQ!wC
} ,1+)qv#|i
int i1=l; 2Y@:Vgg
int i2=mid+1; q-fxs8+m|
for(int cur=l;cur<=r;cur++){ C&vUZa[p
if(i1==mid+1) BM&.Tw|x
data[cur]=temp[i2++]; >wpC45n)9N
else if(i2>r) #X(KW&;m
data[cur]=temp[i1++]; b!R\ u1b
else if(temp[i1] data[cur]=temp[i1++]; 5@6%/='I q
else 02_%a1g
data[cur]=temp[i2++]; zMkjdjb
} *c+Kqz-
} y[s* %yP3l
s3*h=5bX=
} E K)7g~
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改进后的归并排序: '@ym-\,
.'q0*Pe
package org.rut.util.algorithm.support; ^nYS@
n'yC- ;
import org.rut.util.algorithm.SortUtil; (CRY$+d
CVh^~!"7j
/** K>2mm!{
* @author treeroot 8 ]N
* @since 2006-2-2 ^;b$`*M1
* @version 1.0 4|Dxyb>pS
*/ v(?^#C>6W
public class ImprovedMergeSort implements SortUtil.Sort { 06 kjJ4
cvR|qHNX
private static final int THRESHOLD = 10; AS34yM(h
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/* L {6y]t7^
* (non-Javadoc) ZE@!s3\
* sglYT!O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ng?n}$g*
*/ mX)UoiXue
public void sort(int[] data) { -0 [^w
int[] temp=new int[data.length]; ;&Q8xC2
mergeSort(data,temp,0,data.length-1); ;F@N2j#
} 0f).F
6% @@~"
private void mergeSort(int[] data, int[] temp, int l, int r) { qm-G=EX
int i, j, k; 28u)q2s^W|
int mid = (l + r) / 2; ~VZ)LQ'7
if (l == r) jg]_'^pVzr
return; tN&x6O+@
if ((mid - l) >= THRESHOLD) Fi+v:L|
mergeSort(data, temp, l, mid); YN1P9j#0d
else seh1(q?Va4
insertSort(data, l, mid - l + 1); :yN;_bC!b%
if ((r - mid) > THRESHOLD) Y_3{\g|x
mergeSort(data, temp, mid + 1, r); ozZW7dveU
else $=7[.z&
insertSort(data, mid + 1, r - mid); /
AFn8=9'^
-iu7/4!j
for (i = l; i <= mid; i++) { ^YddVp
temp = data; A"t~
)
} CA7 ZoMB#
for (j = 1; j <= r - mid; j++) { hr&&"d {s
temp[r - j + 1] = data[j + mid]; m}\G.$ h4
} p2N;-
int a = temp[l]; D[2I_3[wp
int b = temp[r]; 6/ir("LK
for (i = l, j = r, k = l; k <= r; k++) { A)/
8FYc
if (a < b) { Az29?|e
data[k] = temp[i++]; 5?+ECxPt
a = temp; tG(# &54
} else { byl#8=?
data[k] = temp[j--]; =B9Ama
b = temp[j]; `+_UG^aeW
} -lr)z=})
} eMk?#&a)
} D9
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rPVz!(;k
/** p\]Mf#B
* @param data *NdSL
* @param l `y5?lS*
* @param i Ca]+*Eb9z{
*/ R[Q`2ggG
private void insertSort(int[] data, int start, int len) { LeBuPR$
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 413,O~^
} V!#+Ti/w4
} )UA$."~O
} 1|)l6#hOL
} ig(a28%
J<h^V+x
堆排序: 6/`$Y!.ub
H79XP. TtE
package org.rut.util.algorithm.support; >U\,(VB
:_;9&[H9ha
import org.rut.util.algorithm.SortUtil; kwRXNE(k]_
tz&'!n}
/** h2g|D(u)
* @author treeroot ">vxYi
* @since 2006-2-2 J%d\ 7
* @version 1.0 p=m) lR9
*/ s`W\`w}
public class HeapSort implements SortUtil.Sort{ J-t5kU;L{
KE3/sw0
/* (non-Javadoc) yyke"D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BgLW!|T[
*/ w
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public void sort(int[] data) { NF`WA-W8@
MaxHeap h=new MaxHeap(); Ox ;q +5
h.init(data); f\O)+Vc
for(int i=0;i h.remove(); _"
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System.arraycopy(h.queue,1,data,0,data.length); J(+I`
} ^R.kThG
R/8>^6
private static class MaxHeap{ >%jQw.
}t!,{ZryE1
void init(int[] data){ C2RR(n=N^
this.queue=new int[data.length+1]; bl. y4
for(int i=0;i queue[++size]=data; ~e,k71
fixUp(size); CAg\-*P|
} 6x%uWZa'
} b#%s!
/Po't(-x
private int size=0; lWj{pyZ
-QR&]U+
private int[] queue; <eRE;8C-
9Z}Y2:l'
public int get() { n"YY:Gm;8
return queue[1]; ]k~k6#),;
} ,4$ZB(\
mY9^W2:
public void remove() { vt0XCUnK
SortUtil.swap(queue,1,size--); d~f_wN&r
fixDown(1); FHpS ?htRy
} UJ-IK|P.#
file://fixdown emp*j@9
private void fixDown(int k) { a4HUP*
int j; +92/0
while ((j = k << 1) <= size) { v%O KOrJ
if (j < size %26amp;%26amp; queue[j] j++; 4DY\QvW5
if (queue[k]>queue[j]) file://不用交换 ((i%h^tGa;
break; Y;3DU1MG0
SortUtil.swap(queue,j,k);
l);M(<
k = j; gMe)\5`\Y
} {E*dDv
} ,Bh!|H(?L1
private void fixUp(int k) { "~~Js~
while (k > 1) { JWhi*je
int j = k >> 1; TR:V7d
if (queue[j]>queue[k]) 5~&9/ALk5
break; 61e)SIRz9I
SortUtil.swap(queue,j,k); PCzC8~t
k = j; [DS.@97n
} * SH5p
} Ua^#.K
hl`4_`3y
} h}PeXnRU
]?!#*<t r
} 5U)Ia>p
qcau(#I9.
SortUtil: K=|x"6\
GSzb
package org.rut.util.algorithm; E^kB|; Ki
?wzE+p-
import org.rut.util.algorithm.support.BubbleSort; x6Q,$B
import org.rut.util.algorithm.support.HeapSort; LIfQh
import org.rut.util.algorithm.support.ImprovedMergeSort; =
GUgb2TAT
import org.rut.util.algorithm.support.ImprovedQuickSort; ;&mefaFlWp
import org.rut.util.algorithm.support.InsertSort; 9[yW&t;#
import org.rut.util.algorithm.support.MergeSort; N!R>L{H>
import org.rut.util.algorithm.support.QuickSort; TEQs\d
import org.rut.util.algorithm.support.SelectionSort; VF8pH<
import org.rut.util.algorithm.support.ShellSort; aLZza"W
nf#;]FijB
/** OW}ny
* @author treeroot -/ 5" Py
* @since 2006-2-2 DIrQ5C
* @version 1.0 IM-O<T6r[N
*/ #.1+-^TQk
public class SortUtil { \0gU)tVZ
public final static int INSERT = 1; jz
CA2N%
public final static int BUBBLE = 2; }N@8zB~X
public final static int SELECTION = 3; R@ksYC3 F
public final static int SHELL = 4; 05o +VF;z
public final static int QUICK = 5; .|ZO2MCd
public final static int IMPROVED_QUICK = 6; A7U]wW9
public final static int MERGE = 7; }Xa1K;KM{
public final static int IMPROVED_MERGE = 8; !2YvG%t^6
public final static int HEAP = 9; -^C^3pms
. W ~&d_n
public static void sort(int[] data) { "{TVd>9_
sort(data, IMPROVED_QUICK); 2c)Ez?
} 94uAt&&b(
private static String[] name={ {,:yZ&(
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" CEQs}bz
}; b!lS=zIN
l~",<bTc
private static Sort[] impl=new Sort[]{ hj4!* c
new InsertSort(),
r Uau??
new BubbleSort(), x-E@[=
new SelectionSort(), 4$~A%JN3
new ShellSort(), m$XMq
new QuickSort(), wk+| }s
new ImprovedQuickSort(), >#u9W'@|
new MergeSort(), wqx9
new ImprovedMergeSort(), LH_VdLds
new HeapSort() Sbzx7 *X
}; zDD
H6o_*Y
public static String toString(int algorithm){ }BFX7X
return name[algorithm-1]; 7+'&(^c
} zCz"[9k
HpCTQ\H
public static void sort(int[] data, int algorithm) {
W!Qaa(o?
impl[algorithm-1].sort(data); :OEovk(`
} Vi9Kah+
xLN$!9t
public static interface Sort { ^*g= 65!1
public void sort(int[] data); @zs.M-F
} IjaFNZZC!
|BA&ixHe~C
public static void swap(int[] data, int i, int j) { 5MX7V4ist
int temp = data; x->H~/
data = data[j]; Rz03he
data[j] = temp; xj<
K6
} Iz_#wO
} zg}#X6\G<_