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。 ]w[ThHRJ
插入排序: S^j,f'2
jQ$BPEG&X
package org.rut.util.algorithm.support; zP nC=h|g
h(N=V|0
import org.rut.util.algorithm.SortUtil; Uw <{i
/** M-Sv1ZLh
* @author treeroot :Q-F9o
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* @since 2006-2-2 XU9'Rfp
* @version 1.0 9o_-=>(
*/ yL&/m~{s
public class InsertSort implements SortUtil.Sort{ u-.L^!k
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/* (non-Javadoc) ~L'nzquF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f#OQ (WTJE
*/ ZqK]jT6V/X
public void sort(int[] data) { i@,]Z~]
int temp; T4GW1NP
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E474l
} ( 3;`bvYH"
} P']Y(
!L
} =x
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} o;QZe&
Sk=N [hwU
冒泡排序: it,w^VU_]
k?j Fh6%
package org.rut.util.algorithm.support; ipZHSA
&yLc1#H
import org.rut.util.algorithm.SortUtil; @]?R2bI
TSQhX~RN
/** Z*eoA
* @author treeroot r0btC@Hxy
* @since 2006-2-2 YoAg
* @version 1.0 f:vD`Fz1
*/ RIjM(P
public class BubbleSort implements SortUtil.Sort{ D]u=PqHk2
*P xf#X
/* (non-Javadoc) [`nY2[A$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9L"?wv
*/ fSI %c3
public void sort(int[] data) { * nCx[
int temp; 9L HuS
for(int i=0;i for(int j=data.length-1;j>i;j--){ Tz` ,{k
if(data[j] SortUtil.swap(data,j,j-1); tcOnM w
} v}P!HczmMP
} &t6Tcy
} 6LM9e0oxy
} 9v~5qv;
%U?)?iZdL
} oMc1:=EG
|-61(X.
选择排序: %nQmFIt
O<X
)p`,`
package org.rut.util.algorithm.support; 38wq (
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import org.rut.util.algorithm.SortUtil; w-FHhf
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/** +^gO/0
* @author treeroot C #aFc01B
* @since 2006-2-2 xb`CdtG2.
* @version 1.0 o4~kX
*/ or.\)(m#(
public class SelectionSort implements SortUtil.Sort { 5"gL.Ez
rzT{-DZB[4
/* all*P #[X
* (non-Javadoc) }Vl^EAR
* V6*?$o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8ds}+TtbY
*/ )X%oXc&C|
public void sort(int[] data) { P`
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int temp; \Tkp
for (int i = 0; i < data.length; i++) { qTy v.#{y
int lowIndex = i; hr~.Lj5^W
for (int j = data.length - 1; j > i; j--) { +WLD
if (data[j] < data[lowIndex]) { 2sun=3qb
lowIndex = j; NCDxcz;Gb
} D|TR!
} b1)\Zi
SortUtil.swap(data,i,lowIndex); v,0<9!'v
} 7d9Z/J@>
} (hsZ
0WXVc
} **HrWM%?8o
!NA`g7'
Shell排序: L*^
V5^-
.vaJ Avg
package org.rut.util.algorithm.support; 8&?p
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import org.rut.util.algorithm.SortUtil; bd{\{[^S!
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/** {aIZFe}B
* @author treeroot !Bj^i
cR
* @since 2006-2-2 y@ . b
4
* @version 1.0 3?^NN|xg
*/ a7*COh
public class ShellSort implements SortUtil.Sort{ ]bu9-X&T&
JMePI%#8
/* (non-Javadoc) 2Fq=jOA)z$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A^L?_\e6
*/
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public void sort(int[] data) { 5L3{w+V
for(int i=data.length/2;i>2;i/=2){ ' &N20w
for(int j=0;j insertSort(data,j,i); qK-qcPLsl
} L!vWRwZwC
} K0 QH?F
insertSort(data,0,1); +.K*n&
} S}mm\<=1
CjV7q y
/** $eMK{:$O
* @param data eI?HwP{m
* @param j WKOI\
* @param i RNe9h lr
*/ G<fS(q
private void insertSort(int[] data, int start, int inc) { tNB%eb{
int temp; Y{j7Q4{
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <(?'
s9
} oN ;-M-(
} )@,N7Y1h
} IywiCMjH
)r#,ML
} hpas'H>J
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R~
快速排序: pJocI_v9
PY\W
package org.rut.util.algorithm.support; T+(M8qb
+K&?)?/=
import org.rut.util.algorithm.SortUtil; ;t~*F#p(!
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/** $':JI#
* @author treeroot sX!3_'-
* @since 2006-2-2 G
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* @version 1.0 }pKv.
*/ >~^`5a`$uI
public class QuickSort implements SortUtil.Sort{ XJ O[[G`
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/* (non-Javadoc) '(T mV#3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?N`qLGRm
*/ cB<O.@
public void sort(int[] data) { |zh +
quickSort(data,0,data.length-1); eX@v7i,}
} "&Gw1.p
private void quickSort(int[] data,int i,int j){ U Q)!|@&
int pivotIndex=(i+j)/2; R~$hWu}}
file://swap &M$Bt} <
SortUtil.swap(data,pivotIndex,j); F:S"gRKz
\Vz,wy%-
int k=partition(data,i-1,j,data[j]); !"`Jqs
SortUtil.swap(data,k,j); u?H@C)P
if((k-i)>1) quickSort(data,i,k-1); C_-%*]*,j
if((j-k)>1) quickSort(data,k+1,j); <8*A\&
<5M_EJp
} z>7=k`x`:
/** }'v{dK
* @param data %uj[ `
* @param i ~z &0qQ
* @param j *.:! Ax
* @return 1y 1_6TZ+
*/ "~_$T@^k>
private int partition(int[] data, int l, int r,int pivot) { pL8H8kn
do{ ~Po\ En
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~};]k }
SortUtil.swap(data,l,r); )=y.^@UT@
} Q*Y4m8wY
while(l SortUtil.swap(data,l,r); K[*h+YO
return l; ,}u,)7
} i},d[
C0gfJ~M)
} ^u3*hl}YKy
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4
改进后的快速排序: (X*'y*:
R08&cd#$
package org.rut.util.algorithm.support; /q T E
b-2pzcK{#
import org.rut.util.algorithm.SortUtil; q)vK`\Y
) sRN!~
/** Z>X9J(=
* @author treeroot uW )
\,
* @since 2006-2-2 4{Q$!O>
* @version 1.0 U7jhV,gO4
*/ eU`;L[
public class ImprovedQuickSort implements SortUtil.Sort { F|6
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3xP~~j;7
private static int MAX_STACK_SIZE=4096; JR])xPI`
private static int THRESHOLD=10; -!@H["
/* (non-Javadoc) jiqi!*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0h^uOA; c
*/ vf6`s\6
public void sort(int[] data) { Rq"VB.ef&{
int[] stack=new int[MAX_STACK_SIZE]; dJloH)uJZ>
04P.p6
int top=-1; $|rCrak;
int pivot; ={\![{L
int pivotIndex,l,r; fBf]4@{
C?8PT/
stack[++top]=0; NS
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stack[++top]=data.length-1; 3T"2S[gT
VIb;96$Or
while(top>0){ I+*osk
int j=stack[top--]; $I\))*a
int i=stack[top--]; d:A\<F
+d.u##$
pivotIndex=(i+j)/2; pi|\0lH6W
pivot=data[pivotIndex]; mluW=fE
p 7
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SortUtil.swap(data,pivotIndex,j); :b.3CL\.6
a:=q8Qy
file://partition Ti hnSb
l=i-1; |Uc<;> l
r=j; X";TZk
do{ "w>rlsT<O
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tX@0:RX%
SortUtil.swap(data,l,r); ]^Sd9ba
} Tw2Xe S
while(l SortUtil.swap(data,l,r); 0Ulxp
SortUtil.swap(data,l,j); :8](&B68gE
@m5O{[euj<
if((l-i)>THRESHOLD){ Y=AH%Gy9)
stack[++top]=i; bjuYA/w<
stack[++top]=l-1; AqKHjCI
} | -JI`!7
if((j-l)>THRESHOLD){ E7V38Z
stack[++top]=l+1; qsD?dHi7
stack[++top]=j; !>CE(;E>z
} W/b"a? wE{
s.f`.o
} B0 6s6Q
file://new InsertSort().sort(data); >_rzT9gX&
insertSort(data); ` 52%XI
} j kSc&
/** kTr6{9L
* @param data E%-Pyg*
*/ @<hF.4,]
private void insertSort(int[] data) { ;gZwQ6)i
int temp; 2b; rr
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CW.&Y?>Tv
} V*~1,6N[
} ,h3269$J
} v]B0!k&4.
jVLY!7Z4
} ='7er.~\
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归并排序: ]ev *m&O
s]$HkSH
package org.rut.util.algorithm.support; lo\: ]/&6
6\; 4
4,3
import org.rut.util.algorithm.SortUtil; OAmES;Ck$(
m\<<oIlH
/** Q2JdO 6[96
* @author treeroot RpBiE8F4
* @since 2006-2-2 5x:Ift
*
* @version 1.0 p>2||
*/ }v_p gatC
public class MergeSort implements SortUtil.Sort{ szf"|k!
ST[2]
/* (non-Javadoc) 9zXu6<|qrL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;b, -$A
*/ 'CP/ym f/a
public void sort(int[] data) { <m?GJuQ'
int[] temp=new int[data.length]; *LY~l
mergeSort(data,temp,0,data.length-1); +P>Gy`D9
} uPa/,"p
`4q5CJ2
private void mergeSort(int[] data,int[] temp,int l,int r){ 43vGgGW
int mid=(l+r)/2; v_y!Oh?EG
if(l==r) return ; {Q{lb(6Ba
mergeSort(data,temp,l,mid); v p"%IW
mergeSort(data,temp,mid+1,r); 0!9?H1>
for(int i=l;i<=r;i++){ W,QnU d'N
temp=data; *>H M$.?Q
} r]8wOu-'
int i1=l; Q%M'[L?[
int i2=mid+1; o0zc}mm
for(int cur=l;cur<=r;cur++){ 08<k'Oi]
if(i1==mid+1) 1x~%Ydy
data[cur]=temp[i2++]; $sA,$x:^xI
else if(i2>r) KzEuPJ?
data[cur]=temp[i1++]; >2l13^Y
else if(temp[i1] data[cur]=temp[i1++]; hgTM5*fD}
else -@EBbM&
data[cur]=temp[i2++]; g*:ae;GP
} (|yRo
} 4+ASwN9
oUW)H
} nz,Mqol
71oFm1m{
改进后的归并排序: -X"5G
Z!C`f/h9
package org.rut.util.algorithm.support; $nUd\B$.=
6{JR 0
import org.rut.util.algorithm.SortUtil; "#mXsp-ut
*u|lmALs
/** DFt=%aV[
* @author treeroot _hAj2%SL
* @since 2006-2-2 =]_d pE EQ
* @version 1.0 viW~'}^k7
*/ mF6@Y[/B
public class ImprovedMergeSort implements SortUtil.Sort { *G%1_
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private static final int THRESHOLD = 10; e5*5.AB6&
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/* (cOND/S
* (non-Javadoc) `c qH}2s#
* `^ieT#(O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yj}bY?4I
*/ 8ktjDs$=.:
public void sort(int[] data) { A}>|tm7|
int[] temp=new int[data.length]; nUI63?
mergeSort(data,temp,0,data.length-1); t*Z .e.q+
} )bB"12Z|8
O:oU`vE
private void mergeSort(int[] data, int[] temp, int l, int r) { .u&&H_ UmE
int i, j, k; KKeb ioW
int mid = (l + r) / 2; SY!`a:It
if (l == r) !SLP8|Cd
return; C:'WX*W
if ((mid - l) >= THRESHOLD) >< <$
mergeSort(data, temp, l, mid); <GL}1W"Ay
else ql#{=oGDnA
insertSort(data, l, mid - l + 1); >,w\lf9
if ((r - mid) > THRESHOLD) rh:s
7
mergeSort(data, temp, mid + 1, r); TTA{#[=7
else d&PE,$XC
insertSort(data, mid + 1, r - mid); VYl_U?D
bqw/O`*wfN
for (i = l; i <= mid; i++) { /t$+Af,}
temp = data;
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} ifJv~asp
for (j = 1; j <= r - mid; j++) { J)7,&Gc6
temp[r - j + 1] = data[j + mid]; p=8M0k
} I2t-D1X
int a = temp[l]; p\\P50(-
int b = temp[r]; Xm"w,J&
for (i = l, j = r, k = l; k <= r; k++) { ;#5-.z
if (a < b) { 7AGZu?1]M
data[k] = temp[i++]; L:t)$iF5+
a = temp; %KJ"rvi4K
} else { PTuCN
data[k] = temp[j--]; N3XVT{yo
b = temp[j]; S7?f5ux
} O+(. 29
} fd!pM4"0
} ++J Bbuzj!
.XV]<)<K$
/** dK0}% ]i3#
* @param data |g7nh[
* @param l +BtLyQ
* @param i yBYuDfeZ
*/ )o
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private void insertSort(int[] data, int start, int len) { 5p]urfN-f
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); WryW3];0OR
} )*^OPVt
} >j(I[_g
} gZ`#tlA~
} iGEQXIr3
E i\J9zt
堆排序: )RAv[U1
:|3"H&FWK
package org.rut.util.algorithm.support; C1#o<pv
t?%}hs\!
import org.rut.util.algorithm.SortUtil; ;3.T* ?|o
>+A1 V[
/** J[&
7,}
* @author treeroot N8DiEB3~
* @since 2006-2-2 {Gk}3u/
* @version 1.0 uNPD~TYN
*/ E5Snl#Gl\0
public class HeapSort implements SortUtil.Sort{ n3HCd-z
*hk{q/*Qw
/* (non-Javadoc) k2_6<v
Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MQ9M%>
*/ ,z0~mN
public void sort(int[] data) { ~L\( /[
MaxHeap h=new MaxHeap(); Pq{YZMr
h.init(data); H649J)v+m
for(int i=0;i h.remove(); evndw>
System.arraycopy(h.queue,1,data,0,data.length); t(z(-G|&
} cjy0s+>>
n7`.<*:
private static class MaxHeap{ Sq?6R}q%
>n$EeJ
void init(int[] data){ IxEQh)J X
this.queue=new int[data.length+1]; k"DQbUy0L
for(int i=0;i queue[++size]=data; $X.'W\o|
fixUp(size); #RLch
} )'K!)?&d
} d 40'3]/{
BZ\EqB
private int size=0; |$.sB|_
N
ZaNyNxbp>z
private int[] queue; 5Re`D|8
R
uFu,H-
public int get() { v:J.d5
return queue[1]; eBYaq!t
k
} ^)C$8:@
9sO{1rF
public void remove() { ;K)?:
SortUtil.swap(queue,1,size--); I).^,%>Z)
fixDown(1); wEo-a< (
} ]mO+<{{4X
file://fixdown 6&OonYsP
private void fixDown(int k) { uc"[ qT(X
int j; H z< M
while ((j = k << 1) <= size) {
Skk3M?
if (j < size %26amp;%26amp; queue[j] j++; VvMU)
if (queue[k]>queue[j]) file://不用交换 Tl/Dq(8JH
break; bb
O;AiHD
SortUtil.swap(queue,j,k); soQv?4
k = j; !Lg}q!*%>V
} qG2\`+v
} E3.W#=o
private void fixUp(int k) { e~2*>5\:
while (k > 1) { V)?x*R*T)
int j = k >> 1; #:ED 0</
if (queue[j]>queue[k]) m|Q&Lphb8
break; M*T# 5
SortUtil.swap(queue,j,k); qI V`zZc
k = j; 2)I'5?I
} G.q^Zd#.T
} v;F+fOo
p-(ADQS
} 9^Vx*KVrU
d@>k\6%j
} a,0o{*(u$
?w5nKpG#RI
SortUtil: )Ido|!]0d
si
mX
package org.rut.util.algorithm; z7l;|T
@=zBF'<.9
import org.rut.util.algorithm.support.BubbleSort; }~\].I6
import org.rut.util.algorithm.support.HeapSort; 82@;.%
import org.rut.util.algorithm.support.ImprovedMergeSort; 1Sc~Vb|>
import org.rut.util.algorithm.support.ImprovedQuickSort; `bt)'ERO%#
import org.rut.util.algorithm.support.InsertSort; .+JPtL
import org.rut.util.algorithm.support.MergeSort; e,j ?_p
import org.rut.util.algorithm.support.QuickSort; L&gEQDPgq|
import org.rut.util.algorithm.support.SelectionSort; k~9Ywf
import org.rut.util.algorithm.support.ShellSort; $qyM
X[
KAZkVL
/** 7i|hlk;
* @author treeroot o}^vREO
* @since 2006-2-2 I3E8vi%B.
* @version 1.0 C5lD
Hw[CX
*/ ^J5V!i$
public class SortUtil { ~3-YxCn%
public final static int INSERT = 1; nu<!2xs,
public final static int BUBBLE = 2; EV7+u0uN&Q
public final static int SELECTION = 3; ,IVr4#w0=
public final static int SHELL = 4; +KwF
U
public final static int QUICK = 5; e[k;SSs
public final static int IMPROVED_QUICK = 6; oWaIjU0
public final static int MERGE = 7; HS&uQc a
public final static int IMPROVED_MERGE = 8; uF.\dY\xv
public final static int HEAP = 9; r0$9c
JU%yqXO
public static void sort(int[] data) { v,.n/@s|X
sort(data, IMPROVED_QUICK); 1.d9{LO [-
} MPEBinE?
private static String[] name={ 7Hkf7\JY
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Xi`U`7?D(=
}; [@FeRIu8
^CZ|ci6bX
private static Sort[] impl=new Sort[]{ #y9K-}u
new InsertSort(), ^[\53\R~
new BubbleSort(), Ew,wNR`
new SelectionSort(), *1$~CC7
new ShellSort(), .L TFa.jxA
new QuickSort(), hpi_0lMkI
new ImprovedQuickSort(), <n~g+ps
new MergeSort(), !VZCM{
new ImprovedMergeSort(), K'rs9v"K|
new HeapSort() Nm:<rI,^
}; N, +g/o\f
#1!BD!u
public static String toString(int algorithm){ ^fiRRFr[
return name[algorithm-1]; @U.}Ei
} <.%8j\j(
kd4*Zab
public static void sort(int[] data, int algorithm) { {|wTZ
impl[algorithm-1].sort(data); ps;o[gB@5
} Eq.zCD8A
wm`"yNbD
public static interface Sort { K[;,/:Y
public void sort(int[] data); U[ O!&:6
} ^EBM;&;7
3UtXxL&L`
public static void swap(int[] data, int i, int j) { Mw7UU1 ei
int temp = data; Q+js2?7^
data = data[j]; cZ2,
u,4
data[j] = temp; iwTBE]J
} BL^Hj
} PaI63 !