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。 KnC;j-j
插入排序: 9N [PZD
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package org.rut.util.algorithm.support; w<hw>e^.
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import org.rut.util.algorithm.SortUtil; OeuM9c{
/** dT%$"sj5
* @author treeroot 5;5DEMe
* @since 2006-2-2 ^qaS
* @version 1.0 Y?(kE` R
*/ "Z&-:1tP{9
public class InsertSort implements SortUtil.Sort{ X4:\Shb97
1jJ>(S
/* (non-Javadoc) nl)!)t=n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XA~Cc<v
*/ .X;zEyd
public void sort(int[] data) { mZ^z%+Ca|
int temp; \G?GX
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7|IOn5
} E*ug.nxy
} K 9ytot
} 'E{n1[b
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} <6]TazW?S
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冒泡排序: eC^UL5>%
:Rh?#yO5
package org.rut.util.algorithm.support; p`jkyi
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import org.rut.util.algorithm.SortUtil; GHaOFLY
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/** ,Jy@n]x
* @author treeroot +!'\}"q
* @since 2006-2-2 OS k+l
* @version 1.0 [i18$q5D
*/ prvvr;Ib
public class BubbleSort implements SortUtil.Sort{ phu`/1;p
@_Ko<fKSX
/* (non-Javadoc) "lcNjyU\O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZqhCGHy
*/ #,0PLU3%
public void sort(int[] data) { YRXXutm
int temp; +/tNd2
for(int i=0;i for(int j=data.length-1;j>i;j--){ @)A) cBv#
if(data[j] SortUtil.swap(data,j,j-1); 42a.@JbLQ
} Wj"\nT4
} M]O
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} "K3"s Ec%
} @l)HX'z0d
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} w-%V9]J1
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选择排序: =IQ+9Fl2
q6h'=By
package org.rut.util.algorithm.support; ~c&ygL3
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import org.rut.util.algorithm.SortUtil; Yv?nw-HM
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/** >wz&{9ni
* @author treeroot G%{J.J41F
* @since 2006-2-2 |,*N>e
* @version 1.0 :+%"kgJNL
*/ 4K_rL{s0U
public class SelectionSort implements SortUtil.Sort { 'Vwsbm
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/* Arg604V3
* (non-Javadoc) ~)\9f 1O{^
* zn| S3c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gnjh=anVX1
*/ b&AGVWhh
public void sort(int[] data) { `mar-r_m
int temp; <L4.*
for (int i = 0; i < data.length; i++) { ^I =W<
int lowIndex = i; ;D}8acQ
for (int j = data.length - 1; j > i; j--) { {MP8B'r-6
if (data[j] < data[lowIndex]) { lSGtbSyDI
lowIndex = j; toDv~v
} 3uSj5+@q6
} td*1
SortUtil.swap(data,i,lowIndex); i3bH^WwE&k
} ?b?6/_W~R
} ,/?7sHK-0
Y>Oh]?
} BHoy:Tp
\ 5MD1r}
Shell排序: ET t7?,x@
bXSsN\:Y@[
package org.rut.util.algorithm.support; x*]&Ca0+
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import org.rut.util.algorithm.SortUtil; ]mDsd* 1
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/** vL>cYbJ<
* @author treeroot _[D6WY+
* @since 2006-2-2 *C/bf)w
* @version 1.0 ,t"?~Hl".
*/ =<,>dBs}\
public class ShellSort implements SortUtil.Sort{ ^HJvT)e4
p:*)rE
/* (non-Javadoc) v:2*<;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O*;$))<wX
*/ xF:}a:c@H
public void sort(int[] data) { =ttvC"4?
for(int i=data.length/2;i>2;i/=2){ G~z=,72
for(int j=0;j insertSort(data,j,i); K90wX1&
} PxuE(n V[
} e"^ /xF
insertSort(data,0,1); xEW>7}+\
} <c`+ fPW
1~J:hjKQ
/** DdUT"%
* @param data YkOl@l$D
* @param j ]H ze
* @param i Sz!mn
*/ S&yKi
private void insertSort(int[] data, int start, int inc) { .b.pyVk
int temp; `^:>sU
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); r#8t@W
} vy:-a G
} GSHJ?}U,
} %pikt7,Z~
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} Lek!5Ug
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快速排序: F0.Rv):
CcGE4BB
package org.rut.util.algorithm.support; sBN"eHg
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import org.rut.util.algorithm.SortUtil; wSy|h*a,
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/** xqZZ(jZ
* @author treeroot }PC_qQF
* @since 2006-2-2 ID{62>R
* @version 1.0 }s9eRmJs
*/ V-1H(wRu
public class QuickSort implements SortUtil.Sort{ 5|nT5oS
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/* (non-Javadoc) Yz%A Kp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ":qhO0
*/ "3&bh>#qY
public void sort(int[] data) { UyFvj4SU
quickSort(data,0,data.length-1); g2Hz[C(
} A7`+XqG
private void quickSort(int[] data,int i,int j){ 2F}D?]A
int pivotIndex=(i+j)/2; vkR,Sn
file://swap M%yeI{m
SortUtil.swap(data,pivotIndex,j); ?*{Vn5aX{
+#;t.&\80N
int k=partition(data,i-1,j,data[j]); Z=[qaJ{]
SortUtil.swap(data,k,j); r$8(Q'
if((k-i)>1) quickSort(data,i,k-1); V4["+Y
if((j-k)>1) quickSort(data,k+1,j); n]3Lqe;
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06
} f9%M:cl
/** !t;B.[U *
* @param data #<$pl]>}t
* @param i +.czj,Sq
* @param j /8cfdP Ba
* @return GbXa=*
<-<
*/ l:@`.'-=
private int partition(int[] data, int l, int r,int pivot) { s%bm1$}
do{ k<Y}BvAYB
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _?}[7K!~d
SortUtil.swap(data,l,r); R!+_mPb=Q*
} =qJlSb
while(l SortUtil.swap(data,l,r); qS9z0HLE
return l; (93$ L zZ
} >~F_/Z'5
&.v|yG]&
} F
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改进后的快速排序: ,J@A5/B,AA
\kR:GZ`{UV
package org.rut.util.algorithm.support; w/1Os!p
Il4R R
import org.rut.util.algorithm.SortUtil; J<9;Ix8R
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/** a_T3<
* @author treeroot WC7ltw2
* @since 2006-2-2 w/oXFs&FK
* @version 1.0 #5%\~f
*/ _xmS$z)TO
public class ImprovedQuickSort implements SortUtil.Sort { *SmR|Qy
K ; eR)
private static int MAX_STACK_SIZE=4096; d#U~>wr
private static int THRESHOLD=10; #xoFcjRE
/* (non-Javadoc) C"*8bVx]$n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q; ?Kmk
*/ WJ&a9]&C
public void sort(int[] data) { 4(D1/8
int[] stack=new int[MAX_STACK_SIZE]; 4/N{~
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int top=-1;
/D>G4PP<
int pivot; WbwS!F<au
int pivotIndex,l,r; (7 O?NS
GlOSCJZ
stack[++top]=0; DX(!G a
stack[++top]=data.length-1; &~&oB;uR
oXgi#(y
while(top>0){ ([ODmZHv
int j=stack[top--]; h|{DIG3
int i=stack[top--]; CeINODcT
o:c:hSV
pivotIndex=(i+j)/2; MC~<jJ,
pivot=data[pivotIndex]; \"|7o8
vUR@P
-
SortUtil.swap(data,pivotIndex,j); wv.HPmq
TMG|"|
file://partition 8D&yFal
l=i-1; SH5a&OVZhn
r=j; 1~ZFkcV_C
do{ yt{?+|tXU
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =`OnFdI
SortUtil.swap(data,l,r); Fql|0Fq
} l_i&8*=Px
while(l SortUtil.swap(data,l,r); J,D^fVIw
SortUtil.swap(data,l,j); QIC? `hk1
fA"9eUu
if((l-i)>THRESHOLD){ ^u+#x2$Mg
stack[++top]=i; pC/13|I
stack[++top]=l-1; aXgngwq
} 7U2?in}?Qi
if((j-l)>THRESHOLD){ /_!Ed]
stack[++top]=l+1; +lhnc{;WJv
stack[++top]=j; /2x@Z>
} y1bo28
V|vXxWm/
} 'j$n;3
file://new InsertSort().sort(data); V)Ze>Pp
insertSort(data); )W^$7Em
} ^D?{[LBc
/** 62 9g_P)
* @param data (b"kN(
*/ =3EE-%eF!
private void insertSort(int[] data) { ?#lHQT
int temp; xs^wRE_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <"@5. f1"Y
} G<>h>c1>z
} I#:Dk?"O2
} S#b)RpY
sf Zb$T
J
} >^GAfvW
6 2LLfD
归并排序: 3a0% J'
@;7Ht Z`
package org.rut.util.algorithm.support; 5"&=BD~D
fbW<c`L H
import org.rut.util.algorithm.SortUtil; "J{A}g[
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/** U"535<mR
* @author treeroot ]92=PA>75
* @since 2006-2-2 >rY^Un{Z
* @version 1.0 3
p!t_y|SX
*/ |w.h97fj
public class MergeSort implements SortUtil.Sort{ l}~9xa}:D|
42=/$V
/* (non-Javadoc) SedVp cb+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >">grDX
*/ :_:o%
public void sort(int[] data) { """pe+Y
int[] temp=new int[data.length]; XB<Q A>dLh
mergeSort(data,temp,0,data.length-1); N=j$~,yG
} 9)$gD
H`nd |
private void mergeSort(int[] data,int[] temp,int l,int r){ *})Np0k
int mid=(l+r)/2; >"[Nmx0;w
if(l==r) return ; \xKhbpO~
mergeSort(data,temp,l,mid); 5Un)d<!7&u
mergeSort(data,temp,mid+1,r); t[:G45].-k
for(int i=l;i<=r;i++){ %&!B2z}
temp=data;
rw#?NI:
} J~}i}|YC>
int i1=l; ]\F}-I[
int i2=mid+1; #c(BBTuX
for(int cur=l;cur<=r;cur++){ B:6VD /qC
if(i1==mid+1) 0,wmEV!)
data[cur]=temp[i2++]; XnB-1{a1
else if(i2>r) %FJB9?9=|
data[cur]=temp[i1++]; LJOJ2x
else if(temp[i1] data[cur]=temp[i1++]; VgO.in^q
else #]J"j]L
data[cur]=temp[i2++]; s1J(-O
} GHFYIor
} z}-8pDD'
p/gf
} 0Vj!'=Ntv
p:xVi0
改进后的归并排序: w|:ev_c|
#kp+e)F
package org.rut.util.algorithm.support; o`.5NUn
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import org.rut.util.algorithm.SortUtil; X<d`!,bn@
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/** .[o`TlG%
* @author treeroot yGC3B00Z
* @since 2006-2-2 $1n\jN
* @version 1.0 $*C'{&2
*/ yc0_7Im?
public class ImprovedMergeSort implements SortUtil.Sort { -Xt0=3,
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private static final int THRESHOLD = 10; Nc*z?0wP
f\~A72-
/* P9M. J^<
* (non-Javadoc) l@g%A#
_
* C~"b-T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jp(CBCG{F
*/ MS& 'Nj
public void sort(int[] data) { Asli<L(?`
int[] temp=new int[data.length]; }^azj>p5
mergeSort(data,temp,0,data.length-1); 1SG^X-(GM/
} :`Xg0J+P
"]B%V!@
private void mergeSort(int[] data, int[] temp, int l, int r) { Na<);Pg
int i, j, k; Mh=j^ [4Q
int mid = (l + r) / 2; Ub`vf4EB
if (l == r) w~>tpkUB
return; c"pu"t@/Z
if ((mid - l) >= THRESHOLD) -EG=}uT['b
mergeSort(data, temp, l, mid); :_kZkWD5
else bdHHOpXM
insertSort(data, l, mid - l + 1); Q@/Z~xw"'I
if ((r - mid) > THRESHOLD) vA*Q}]Ov
mergeSort(data, temp, mid + 1, r); WNF#eM?[a
else s ?|Hw|j
insertSort(data, mid + 1, r - mid); KVPWJHGr
4E@_Fn_#
for (i = l; i <= mid; i++) { n4 o}}tI
temp = data; 2I{kLN1TY
} U3|9a8^H
for (j = 1; j <= r - mid; j++) { ^<Zye>KO
temp[r - j + 1] = data[j + mid]; WU~L#Ih.V
} uYXkD#{
int a = temp[l]; yE|hA2G?0
int b = temp[r]; EU.!/'<
for (i = l, j = r, k = l; k <= r; k++) { ~c@@m\C"b
if (a < b) { qb+Gjgp
data[k] = temp[i++]; g])iU9)8
a = temp; ,YF1*69
} else { KdC'#$
data[k] = temp[j--]; mJ+mTA5bW
b = temp[j]; =}2k+v-B
} {11xjvAD
} mj&$+z M>
} =a(]@8$!1
T}K@ykT
/** *V{Y.`\
* @param data KB8_yo{y
* @param l yo
:63CPP
* @param i F-GH?sfvi
*/ [m(n-MuF
private void insertSort(int[] data, int start, int len) { a6 w'.]m
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Wx|De7*
} 5?8jj
} &)!4rABn
} f*Yr*yC
} &p5^Cjy L
~$m:j];
堆排序: l{hO"fzy
ISg-?h/
package org.rut.util.algorithm.support; 'LC0hoV
+$#ytvDy
import org.rut.util.algorithm.SortUtil; "-g5$v$de
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/** bkiMF$K,K
* @author treeroot E6fs&
* @since 2006-2-2 6\xfoy|j
* @version 1.0 :*eJ*(M
*/ ]BfJ~+ N
public class HeapSort implements SortUtil.Sort{ b
4A1M
[vOk=
/* (non-Javadoc) $.3J1DU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dlBr2 9
*/ N[kl3h%q
public void sort(int[] data) { lCGEd 3
MaxHeap h=new MaxHeap(); %:\GYs(Y
h.init(data); A}_0iwG
for(int i=0;i h.remove(); HEm XB=
System.arraycopy(h.queue,1,data,0,data.length); Wcki=ac\v!
} x| r#
.qrS[ w
private static class MaxHeap{ G' mg-{
t(xe*xS
void init(int[] data){ Xr{
r&Rl
this.queue=new int[data.length+1]; Yduj3Ht:w
for(int i=0;i queue[++size]=data; I$*LMzve
fixUp(size); G!7A]s>C
} petq6)g?
} =h[;'v{
?gG%FzfQ/
private int size=0; $'COsiK7
)p[Qj58
private int[] queue; n7hjYNJ
LrdX^_,nt
public int get() { N'YQ6U
return queue[1]; `:
9n
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} F{laA YE
;n.SRy6
public void remove() { &_,.*tha
SortUtil.swap(queue,1,size--); '}E"Mdb
fixDown(1); eOJ_L]y-
} `bW0Va
N
file://fixdown )|KZGr
private void fixDown(int k) { R*VEeLx
int j; }ni@]k#q<
while ((j = k << 1) <= size) { ek` 6 Uf
if (j < size %26amp;%26amp; queue[j] j++; ^_k`@SU
if (queue[k]>queue[j]) file://不用交换 rmPJid[8B~
break; Wt!8.d}=
SortUtil.swap(queue,j,k); "B*UZ.cC
k = j; -*W\$P
} '3
JVUHn
} Iy Vmz'
private void fixUp(int k) { lQG;WVqW
while (k > 1) { C5=m~
int j = k >> 1; [S?`OF12
if (queue[j]>queue[k]) Og?P5&C"9D
break; fnK H<
SortUtil.swap(queue,j,k); wN:vI(C
k = j; sq+cF/jo6
} ?6 "B4%7b
} na3lbwq
Ie4Xk
} bDnT><eH
Wo6C0Z3g}
} I|_U|H!`
`$yi18F
SortUtil: __[bKd.
_m3#g1m{
package org.rut.util.algorithm; #|F5Kh"
.cs4AWml<
import org.rut.util.algorithm.support.BubbleSort; vUB*Qm]Y\
import org.rut.util.algorithm.support.HeapSort; 'S6JpWG1
import org.rut.util.algorithm.support.ImprovedMergeSort; vxXrVPU3
import org.rut.util.algorithm.support.ImprovedQuickSort; =/(R_BFna
import org.rut.util.algorithm.support.InsertSort; wSG!.Ejc7
import org.rut.util.algorithm.support.MergeSort; J1Oe`my
import org.rut.util.algorithm.support.QuickSort; lSBu,UQP
import org.rut.util.algorithm.support.SelectionSort; y~Vl0f;
import org.rut.util.algorithm.support.ShellSort; O]G3 l0
}ssL;q
/** F,@uYMQs
* @author treeroot pI}6AAs}Z
* @since 2006-2-2 WTwura,
* @version 1.0 M^0^l9w
*/ i?6#>;f
public class SortUtil { #fq&yjl#A
public final static int INSERT = 1; 6d;RtCENo
public final static int BUBBLE = 2; '@WS7`@-y
public final static int SELECTION = 3; Je=k.pO1
public final static int SHELL = 4; <UbLds{+Uo
public final static int QUICK = 5; \6vr)1~N>
public final static int IMPROVED_QUICK = 6; ~--F?KUnL
public final static int MERGE = 7; |yi#6!}^
public final static int IMPROVED_MERGE = 8; 6&6t=
public final static int HEAP = 9; nmClP
53l !$#o
public static void sort(int[] data) { vd0uI#g%#
sort(data, IMPROVED_QUICK); .`/6[Zp
} c='uyx
private static String[] name={ 2@:Ztt6~
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jB3Rue:+g
}; =|IY[2^
4Vv$bbu+
private static Sort[] impl=new Sort[]{ T:S[[#f{5
new InsertSort(), R'h.lX
new BubbleSort(), }W
nvz;]B
new SelectionSort(), isor%R!
new ShellSort(), +}Qq#^:_\
new QuickSort(), .r \g]
new ImprovedQuickSort(), C@rIyBj1g
new MergeSort(), ;bkvdn}
new ImprovedMergeSort(), 0"koZd,c
new HeapSort() kw5`KfG9
}; [cw>; \J
0E/16@6=
public static String toString(int algorithm){ oe{,-<yck
return name[algorithm-1]; |[MtUWEW
} A8 j$c ~
@^,9O92l
public static void sort(int[] data, int algorithm) { jGtu>|Gj
impl[algorithm-1].sort(data); MmD1@fW32#
} rl:D>t(:.
eI=:z/pd
public static interface Sort { hGj`IAW
public void sort(int[] data); z;PF%F
} T;{"lp.
G>S3? jGk
public static void swap(int[] data, int i, int j) { C ,[q#D4
int temp = data; sdXZsQw
data = data[j]; FXFyF*w2
data[j] = temp; 1_5]3+r_U-
} -~&T0dt~
} %VwkYAgA