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。 o.Jq1$)~y
插入排序: hR] AUH
KP[H&4eoC
package org.rut.util.algorithm.support; R4R SXV
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import org.rut.util.algorithm.SortUtil; =R>%}5
/** pNHO;N[&
* @author treeroot 7JedS
* @since 2006-2-2 y+C.2 ca
* @version 1.0 N!`8-ap\^
*/ A/xWe
public class InsertSort implements SortUtil.Sort{ l9 |x7GB
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/* (non-Javadoc) @"`{gdB$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nn"Wn2ciS
*/ ?QnVWu2K
public void sort(int[] data) { 3gn)q>Xj$
int temp; ;bZIj`D(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~[mAv#d&i
} u
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} Vo\RtM/6{
} [;Q8xvVZ'
kJ JUu
} sp0j2<$a
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冒泡排序: jQKlJi2xu
CTbz?Kn
package org.rut.util.algorithm.support; CZ/bO#~
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import org.rut.util.algorithm.SortUtil; J#0oL_xY#
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/** Dm=Em-ST6
* @author treeroot 5PJB<M_m:
* @since 2006-2-2 Z(S=2r.
* @version 1.0 }@*Me+
*/ $>3/6(bW
public class BubbleSort implements SortUtil.Sort{ w2:!yQk_
0`KB|=>
/* (non-Javadoc) %0PdN@I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i4Y_5
*/ (O
N
\-*
public void sort(int[] data) { )U`"3R
int temp; gz K"'4`
for(int i=0;i for(int j=data.length-1;j>i;j--){ wo>srZs
if(data[j] SortUtil.swap(data,j,j-1); H<M
ggs-
} -$(,&qyk
} K)Nbl^6x
} FQR{w
} 9E (VU.
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} web=AQ5I4
Lc|5&<8ZG1
选择排序: 8t$a8 PE
o0~+%&
package org.rut.util.algorithm.support; y)W.xR
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import org.rut.util.algorithm.SortUtil; lD!o4ZAo
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/** ZhKYoPIq
* @author treeroot s D]W/
* @since 2006-2-2 J}7iXTh
* @version 1.0 {4Q4aL(
*/ )*@Oz
public class SelectionSort implements SortUtil.Sort { uc?QS~H&w
krTH<- P
/* IKM=Q.
7j
* (non-Javadoc) "HW~|M7>(
* X6mY#T'fQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5Qp5JMK
*/ YF=@nR$_~j
public void sort(int[] data) { Urhh)i
int temp; G 3P3
for (int i = 0; i < data.length; i++) { x. r~e)x=
int lowIndex = i; J{=by]-rD,
for (int j = data.length - 1; j > i; j--) { cO2
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if (data[j] < data[lowIndex]) { tvptawA.
lowIndex = j; @3bQ2jn
} x`^~|Q
} m,3?*0BMp=
SortUtil.swap(data,i,lowIndex); Vtm5&-
} !!ZNemXct$
} M'D;2qo
}io9Hk>|
} #;U_ L`q
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Shell排序: u0h {bu
oUEpzv,J
package org.rut.util.algorithm.support; -p`hevRr
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import org.rut.util.algorithm.SortUtil; ,,oiL
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/** /reSU 2
* @author treeroot Q"CZ}B1<
* @since 2006-2-2 \$s<G|<P
* @version 1.0 AFL* a*
*/ 0@1AH<
public class ShellSort implements SortUtil.Sort{ \1f$]oS
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/* (non-Javadoc) 3A]Y=gfa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {m F:m5e
*/ $lci{D32,
public void sort(int[] data) { [i.2lt#]
for(int i=data.length/2;i>2;i/=2){ -yOrNir}W
for(int j=0;j insertSort(data,j,i); Os9xZ
} noa?p&Y1m
} 2}1(j
insertSort(data,0,1); ]*U\ gm%
} It!%/Y5
L~Epd.,Dt
/** |)i-c`x
* @param data ?stx3sZ
* @param j gKcP\m
* @param i 4p&qH igG
*/ (L8H.|.
private void insertSort(int[] data, int start, int inc) { sN 1x|pkN
int temp; b&~rZ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); J@(=#z8xS
} e2;19bj&
} 5NbI Vz
} :x]gTZ?
iN5~@8jAzz
} 3zY"9KUN
5 |{0|mP
快速排序: VR2BdfKU,
+w:[By"
package org.rut.util.algorithm.support; wqyx{W`~w
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import org.rut.util.algorithm.SortUtil; ]K?z|&N|HK
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/** C78YHjy
* @author treeroot Yn[y9;I{
* @since 2006-2-2 .
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* @version 1.0 KWCA9.w4q
*/ SoS[yr
public class QuickSort implements SortUtil.Sort{ Wk$[;>NU3
KQaw*T[Q3w
/* (non-Javadoc) #* j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k# ZO4
*/ ypwVzCUG
public void sort(int[] data) { "d/x`Dx
quickSort(data,0,data.length-1); 0wB ?U~
} l~AmHw
e
private void quickSort(int[] data,int i,int j){ 0!o&=Qh
int pivotIndex=(i+j)/2; +dSe"W9
file://swap /@lXQM9T
SortUtil.swap(data,pivotIndex,j); @fRB0m"3
Nj*J~&6G
int k=partition(data,i-1,j,data[j]); XB UO
SortUtil.swap(data,k,j); -uqJ~g D
if((k-i)>1) quickSort(data,i,k-1); $dFEC}1t
if((j-k)>1) quickSort(data,k+1,j); fxXZ^#2wX
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} &48wa^d
/** <<6i6b
* @param data r^n%PH<
* @param i vi["G7
* @param j L qMH]W
* @return &sh
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*/ A&~G
private int partition(int[] data, int l, int r,int pivot) { tmDI2Z%7
do{ !3v!BJ#+,&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (WCpaC
SortUtil.swap(data,l,r); &`0y<0z
} 7]@vPr;:
while(l SortUtil.swap(data,l,r); HtgVD~[]
return l; ~4.Tq{
} %L=roqz
CSRcTxH
} .<gAa"
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改进后的快速排序: I5wf|wB-
ba1zu|@w
package org.rut.util.algorithm.support; \kF}E3~+#
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import org.rut.util.algorithm.SortUtil; xqmP/1=NO
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/** 6{8qATLR
* @author treeroot 6c^2Nl8e
* @since 2006-2-2 UN'hnqC
* @version 1.0 cAM1\3HWT"
*/ D06'"
public class ImprovedQuickSort implements SortUtil.Sort { m4<8v
(^ZC8)0i(
private static int MAX_STACK_SIZE=4096; ^SpD) O{
private static int THRESHOLD=10; 'vgw>\X(
/* (non-Javadoc) 8E H#IiP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *^bqpW2$q
*/ I;qeDCM
public void sort(int[] data) { lj/?P9
int[] stack=new int[MAX_STACK_SIZE]; M}!7/8HUC
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int top=-1; @
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int pivot; @`G_6<.`
int pivotIndex,l,r; sg;Gk/]
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stack[++top]=0; L7el5Q!Y=
stack[++top]=data.length-1; lsCD%P
SouPk/-B80
while(top>0){ 3;Kv9i<~LE
int j=stack[top--]; ;J Dn1(6
int i=stack[top--]; x$QOOE]
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pivotIndex=(i+j)/2; Lfx&DK !
pivot=data[pivotIndex]; EjV,&7o)
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SortUtil.swap(data,pivotIndex,j);
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@\e2Q&O
file://partition 0V`s 3,k
l=i-1; j#$ R.
r=j; tH,}_Bp
do{ PCF!Y(l
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wo5"f}vd#
SortUtil.swap(data,l,r); `YVdIDl]
} ><}FyK4C
while(l SortUtil.swap(data,l,r); L(XGD
SortUtil.swap(data,l,j); S75wtz)e
&Ey5 H?U!
if((l-i)>THRESHOLD){ JaoRkl?F
stack[++top]=i; Ki(qA(r
stack[++top]=l-1; |&`NB|
} 2Vas`/~u~
if((j-l)>THRESHOLD){ !*HH5qh6
stack[++top]=l+1; lCLz!k2di
stack[++top]=j; W(Z_ac^e[
} XrS. [
*&9_+F8ly
} PVH^yWi
n
file://new InsertSort().sort(data); 5+].$
insertSort(data); ,+-l1GpL
} lM`M70~
/** .Qm"iOyM
* @param data [g`9C!P-G
*/ *%5.{J!
private void insertSort(int[] data) { 6*8"?S'
int temp; `[3Iz$K=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fw$/@31AP?
} :#s6,
} U\a.'K50F
} qgg/_H:;w
DP ,owk
} $"1Unu&P
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归并排序: +EjH9;gx
c,pR+DP
package org.rut.util.algorithm.support; )#n0~7
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import org.rut.util.algorithm.SortUtil; }tA77Cm)45
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/** (oTtnQ""+
* @author treeroot Bd jo3eX
* @since 2006-2-2 WP[h@#7<
* @version 1.0 KU# w%
*/ d/5i4g[q
public class MergeSort implements SortUtil.Sort{ AdB B#zd
lx_jy>$}r
/* (non-Javadoc) Z^ynw8k"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %EkV-%o*
*/ 3Kuu9<0
public void sort(int[] data) { v zgR3r
int[] temp=new int[data.length]; ]S;^QZ
mergeSort(data,temp,0,data.length-1); dz@L}b*
} hG51jVYtw
)7!q>^S{B
private void mergeSort(int[] data,int[] temp,int l,int r){ =j#1HI=Fe
int mid=(l+r)/2; 9RA~#S|(T
if(l==r) return ; P`r@<cgb=
mergeSort(data,temp,l,mid); gS{hfDpk,h
mergeSort(data,temp,mid+1,r); 4UwXrEQp
for(int i=l;i<=r;i++){ !SRElb A;i
temp=data; $>Md]/I8
} v0uDL7
int i1=l; 7^1yZ1(
int i2=mid+1; lh^-L+G:Ok
for(int cur=l;cur<=r;cur++){ (ndXz
if(i1==mid+1) OBrbWXp@
data[cur]=temp[i2++]; `! ~~Wf'
else if(i2>r) PNy)TqdRS
data[cur]=temp[i1++]; Itq248+Ci
else if(temp[i1] data[cur]=temp[i1++]; `;KU^dH
else $Ro]]NUz|
data[cur]=temp[i2++]; H'2&3v
} qyi5j0)W
} .quui\I3
<X@XbM
} D1w;cV7/d
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改进后的归并排序: E|R^tETb
bm/pLC6%.
package org.rut.util.algorithm.support; 2I:x)
v9?hcJ=
import org.rut.util.algorithm.SortUtil; 7oUecyoj
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/** z}Y23W&sX
* @author treeroot 9Q\CJ9
* @since 2006-2-2 Vyy;mEBg
* @version 1.0 \tv^],^`
*/ [/Q .MmnL
public class ImprovedMergeSort implements SortUtil.Sort { RWyDX_z#<
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private static final int THRESHOLD = 10; h?t#ABsVK
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/* 0}LBnV
* (non-Javadoc) +Cs[]~
* 0%x"Va~"z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kjw==5)}
*/ ?+3vK=Rf}
public void sort(int[] data) { ,=TY:U;?
int[] temp=new int[data.length]; FYOQ}N
mergeSort(data,temp,0,data.length-1); x}^:Bs+j
} K)ZW1d;
,)&ansN
private void mergeSort(int[] data, int[] temp, int l, int r) { ;)nkY6-
int i, j, k; qS8p )pw
int mid = (l + r) / 2; c<k=8P
if (l == r) Uz4!O
return; CBkI!
In2
if ((mid - l) >= THRESHOLD) y
nue;*rM
mergeSort(data, temp, l, mid); 8-JOfq}s
else g4eEkG`XTS
insertSort(data, l, mid - l + 1); ]VKM3[
if ((r - mid) > THRESHOLD) 7lLh4__;`6
mergeSort(data, temp, mid + 1, r); :.VI*X:aQh
else D,3Kx ^
insertSort(data, mid + 1, r - mid); f6of8BOg
3p+V~n.+
for (i = l; i <= mid; i++) { @p$Nw.{'
temp = data; s'7PHP)LOJ
} mM[KT}
A
for (j = 1; j <= r - mid; j++) { Vx
Vpl@
temp[r - j + 1] = data[j + mid]; mRurGaR
} Hto RN^9
int a = temp[l]; KD<smwXjG
int b = temp[r]; qsT@aSIo9
for (i = l, j = r, k = l; k <= r; k++) { h]+UK14m
if (a < b) { 0I v(ioB=
data[k] = temp[i++]; 2@Nt6r
a = temp; }O+a
} else { mhNX05D
data[k] = temp[j--]; ShIJ6LZ
b = temp[j]; x]Pp|rHj
} Nc da~h
Q
} v 1.8]||^
} {}n]\zO %
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/** GXnrVI
* @param data IDY2X+C#U
* @param l {i^F4A@=Z
* @param i u\AL`'v
*/ u]z87#4
private void insertSort(int[] data, int start, int len) { 5r` x\
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); v[2N-
} ~Fe$/*v
} n~Yr`5+Z
} u~~H'*EM
} KU=+ 1,Jf
B'v~0Kau
堆排序: Y6E0-bL@Fe
] :SbvsPm
package org.rut.util.algorithm.support; W9G1wU
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import org.rut.util.algorithm.SortUtil; #z5$_z?_
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/** VvUP;o&/
* @author treeroot Gspb\HJ^
* @since 2006-2-2 [9;[g~;E%m
* @version 1.0 0O!A8FA0
*/ | Kq<}R
public class HeapSort implements SortUtil.Sort{ 3De(:c)@
bs_< UE
/* (non-Javadoc) O9P4r*prA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vhGX&
*/ C({r1l4[D
public void sort(int[] data) { _)Ad%LPsd7
MaxHeap h=new MaxHeap(); ) E*-
h.init(data); m^o?{
(K
for(int i=0;i h.remove(); 1l s 8 h
System.arraycopy(h.queue,1,data,0,data.length); NpH:5hi
} GQ 0(lS
)tx2lyY:
private static class MaxHeap{ .1f!w!ltVR
i.0d>G><@
void init(int[] data){ s[;1?+EI
this.queue=new int[data.length+1]; { ^Rr:+
for(int i=0;i queue[++size]=data; IqFmJs|C
fixUp(size); `4,]Mr1b
} o0_H(j?
} u/apnAW@M
zHD8\*
private int size=0; sitgz)Ki^
-FS!v^
private int[] queue; eB9F35[
Z~ K} @
public int get() { -Dwe,N"{2
return queue[1]; I2gSgv%
} ;;N#'.xD
wlDo(]mj=O
public void remove() { F$S/zh$)0
SortUtil.swap(queue,1,size--); XEUS)X)
fixDown(1); g,B@*2Uj
} DAy|'%rF1-
file://fixdown ,xutI
private void fixDown(int k) { 8l<~zIoO
int j; tm.&k6%
while ((j = k << 1) <= size) { 1
J[z ![Tf
if (j < size %26amp;%26amp; queue[j] j++; X=? \A{Y
if (queue[k]>queue[j]) file://不用交换 jGYl*EBx
break; w+{{4<+cd
SortUtil.swap(queue,j,k); .uB[zJc
k = j; Lr Kx
} orFB*{/Z
} ~ujg250.L
private void fixUp(int k) { Mo]iVj8~
while (k > 1) { }OSf C~5P
int j = k >> 1; u4xJ-Vu
if (queue[j]>queue[k]) uN0'n}c;1.
break; @h5 Q?I
SortUtil.swap(queue,j,k); r<;Y4<,BZ
k = j; 3*R(&O6}
} ;1k_J~Qei
} &<) _7?
V/ZWyYxjLi
} DvTbt?i[
R(2MI}T
} [n +(
nb@<UbabW}
SortUtil: 0.#%KfQ
s%?<:9
package org.rut.util.algorithm; &WdP=E"
0qBXL;sE
import org.rut.util.algorithm.support.BubbleSort; eXdH)|l,\
import org.rut.util.algorithm.support.HeapSort; pe+m%;nzR
import org.rut.util.algorithm.support.ImprovedMergeSort; '=IuwCB|;
import org.rut.util.algorithm.support.ImprovedQuickSort; d%Ku'Jy
import org.rut.util.algorithm.support.InsertSort; eoPoGC
import org.rut.util.algorithm.support.MergeSort; _K~?{".
import org.rut.util.algorithm.support.QuickSort; 7RgnL<t~:8
import org.rut.util.algorithm.support.SelectionSort; K$M,d-
`b
import org.rut.util.algorithm.support.ShellSort; ,->
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* =O@D2g0
/** 'eoI~*}3WQ
* @author treeroot #elaz8 5
* @since 2006-2-2 ]j(Ld\:L
* @version 1.0 [oH,FSuO!2
*/ CjA}-ee
public class SortUtil { \g|;7&%l3
public final static int INSERT = 1; UKSI"/8I
public final static int BUBBLE = 2; wJF$<f7P
public final static int SELECTION = 3; OL[_2m*;9p
public final static int SHELL = 4; hpticW|
public final static int QUICK = 5; y] ~X{v
public final static int IMPROVED_QUICK = 6; Pq(
)2B
public final static int MERGE = 7; X .S8vlb4z
public final static int IMPROVED_MERGE = 8; CY9`HQ1
public final static int HEAP = 9; t{/
EN)J
wT\dzp>/
public static void sort(int[] data) { ?/ s=E+
sort(data, IMPROVED_QUICK); 5{6ebq55"
} Ia)^
private static String[] name={ NPR{g!tK%
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^F1zkIE
}; ZZ6F0FLXJ
0 .p $q
private static Sort[] impl=new Sort[]{ Th*mm3D6
new InsertSort(), m;I;{+"u
new BubbleSort(), KBGJB`D*
new SelectionSort(), iF]vIg#h
new ShellSort(), *'(dcy9
new QuickSort(), h-h}NCP
new ImprovedQuickSort(), v]27+/a$c
new MergeSort(), s/'gl
new ImprovedMergeSort(), Ljxn}):[
new HeapSort() ]j:Ikb}
}; c5rQkDW
@.iOFY
public static String toString(int algorithm){ _V|'iz9.
return name[algorithm-1]; ^q$vyY
} g^En6n)
(jYs_8;
public static void sort(int[] data, int algorithm) { Dl/_jM
impl[algorithm-1].sort(data); BmUzsfD
} 3B"rI
$Y0bjS2J
public static interface Sort { <FK7Rz:4T
public void sort(int[] data); U>x2'B v
} [%nG_np
ddHIP`wb
public static void swap(int[] data, int i, int j) { AQ
7e
int temp = data; @4B2O"z`
data = data[j]; v981nJ>w,
data[j] = temp; L}a3!33)C
} M7Hk54U+t
} $'FPst8Q<