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[JAVA]用Java实现的各种排序

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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。 Q t!X<.  
插入排序: 'dnTu@mUT  
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package org.rut.util.algorithm.support; #U46Au  
FIB 9W@oao  
import org.rut.util.algorithm.SortUtil; iMrNp  
/** x B%Felz  
* @author treeroot Rh:@@4<  
* @since 2006-2-2 B%|cp+/  
* @version 1.0 8T}Ycm5}  
*/ M.h)]S>  
public class InsertSort implements SortUtil.Sort{ [sM~B  
qre.^6x  
/* (non-Javadoc) =bVaB<!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N*k`'T  
*/ z[7j`J|Kk  
public void sort(int[] data) { D~KEjz!bQ  
int temp; hXvg<Rf  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?5%0zMC  
} m{U+aqAQK  
} JWu^7}@~=  
} ^>g7Kg"0  
B/*`u  
} r%*UU4xvB  
0a#2 Lo  
冒泡排序: ]cz*k/*0  
U1+X!&OCp  
package org.rut.util.algorithm.support; Bf&,ACOf  
*?k~n9n5U  
import org.rut.util.algorithm.SortUtil; uC _&?  
mOLP77(o  
/** Cst:5m0!  
* @author treeroot S 1%/ee3  
* @since 2006-2-2 -Qs4 s  
* @version 1.0 RJ#xq#l  
*/ ;8Z\bHQ>  
public class BubbleSort implements SortUtil.Sort{ N8<Wm>GLX~  
+/g/+B_b  
/* (non-Javadoc) $oefG}h2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9~6FWBt  
*/ sknta 0^=2  
public void sort(int[] data) { L*A9a  
int temp; 1^bI9 /  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \]uo^@$bm  
if(data[j] SortUtil.swap(data,j,j-1); $)L=MEdx  
} W!$aK)]4u  
} tMWDKatb  
} !'4HUB>+  
} ?m)3n0Uh  
R7/"ye:7J  
} 6LGy0dWpG  
n4albG4  
选择排序: RHV& m()Q  
{b|:q>Be8  
package org.rut.util.algorithm.support; MEOVw[hO  
xMk0Xf'_  
import org.rut.util.algorithm.SortUtil; <X7x  
6cCC+*V{  
/** 6K/j,e>L  
* @author treeroot _uvRC+~R  
* @since 2006-2-2 {8NnRnzU  
* @version 1.0 DEGEr-  
*/ 9-<EeV_/  
public class SelectionSort implements SortUtil.Sort { }Q7 ~tu  
Et\z^y  
/* e 1W9Z $m  
* (non-Javadoc) F_m[EB  
* g~5$X{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 93z oJiLRf  
*/ =WaZy>n}7  
public void sort(int[] data) { hpftVEB  
int temp; N :#"4e  
for (int i = 0; i < data.length; i++) { u$7o d$&S  
int lowIndex = i; =.@{ uu;  
for (int j = data.length - 1; j > i; j--) { t)Iu\bP  
if (data[j] < data[lowIndex]) {  V~V_+  
lowIndex = j; P4{8pO]B  
} l]BIFZ~  
} ]!yuD/4A  
SortUtil.swap(data,i,lowIndex); 6 ufF34tA  
} aP}kl[W  
} D^(Nijl9U  
W'Wr8~{h  
} 5*.JXx E;U  
JLS|G?#0  
Shell排序: gr\UI!]F  
.OLm{  
package org.rut.util.algorithm.support; kaSy 9Y{  
%3L4&W _T  
import org.rut.util.algorithm.SortUtil; %P!6cyQS  
C_SJ4Sh  
/** KrcL*j&^  
* @author treeroot +{Qk9Z  
* @since 2006-2-2 BDW%cs  
* @version 1.0 }O_kbPNw  
*/ [P5+}@t  
public class ShellSort implements SortUtil.Sort{ h J*2q"  
0w'%10"&U+  
/* (non-Javadoc) Te%2(w,B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @dl{ .,J  
*/ [O) Q\|k  
public void sort(int[] data) { _K(w &Kr  
for(int i=data.length/2;i>2;i/=2){ ?:D#\4=US  
for(int j=0;j insertSort(data,j,i); jQ &$5&o  
} \'z&7;px  
} K `|%-k+D  
insertSort(data,0,1); gq[|>Rs75  
} D6cqON0a.  
clE_a?  
/** !j'9>G{T  
* @param data ~p9nAACU  
* @param j 2g>4fZ  
* @param i QU4/hS;Ux  
*/ -6wjc rTD  
private void insertSort(int[] data, int start, int inc) { >HvgU_  
int temp; T$ <l<.Qd  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); V`F]L^m=L  
} 4/6?wX  
} FW](GWp`:  
} -4  ~(*  
.Ux bwTup  
} X rBe41  
Q-scL>IkCb  
快速排序: VB*`"4e@b<  
l~|x*JTq  
package org.rut.util.algorithm.support; CC?L~/gPN  
m Mp(  
import org.rut.util.algorithm.SortUtil; O$<m(~[S  
azEN_oUV  
/** PtfxF]%H  
* @author treeroot F+%6?2 J  
* @since 2006-2-2 1N8:,bpsT  
* @version 1.0 7x 6q:4Ep\  
*/ \^l273  
public class QuickSort implements SortUtil.Sort{ }6U`/"RfcO  
tw<mZd2H  
/* (non-Javadoc) |wef[|@%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PubO|Mf  
*/ Me*woCos'  
public void sort(int[] data) { dA[MjOd3  
quickSort(data,0,data.length-1); %E1_)^ ^  
} @m#1[n;  
private void quickSort(int[] data,int i,int j){ BWtGeaW/sr  
int pivotIndex=(i+j)/2; 6p=OM=R  
file://swap =f{)!uW<4  
SortUtil.swap(data,pivotIndex,j); 9E@}@ZV(  
mA{G: d  
int k=partition(data,i-1,j,data[j]); 3Ryae/Nk  
SortUtil.swap(data,k,j); K<BS%~,I  
if((k-i)>1) quickSort(data,i,k-1); S"}G/lBx.  
if((j-k)>1) quickSort(data,k+1,j); zO@7V>2  
UKfC!YR2J8  
} cJIA/HQe  
/** ZvQ~K(3  
* @param data -XbO[_Wf  
* @param i aPELAU-  
* @param j  Sj,>O:p  
* @return \A~r~  
*/ JPs R7f  
private int partition(int[] data, int l, int r,int pivot) { '[T#d!T  
do{ '4T]=s~N  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0=WZ 8|R  
SortUtil.swap(data,l,r); ?3=D-Xrb  
} gwm}19JC  
while(l SortUtil.swap(data,l,r); e9F\U   
return l; qGAb h  
} :o2^?k8k&#  
@c >a  
} bwr}Ge  
J)148/  
改进后的快速排序: vk^/[eha  
-pF3q2zb  
package org.rut.util.algorithm.support; {9/ayG[98  
ZysZS%  
import org.rut.util.algorithm.SortUtil; {6/Yu: ;  
u'm[wjCj c  
/** .q!U@}k.  
* @author treeroot A_:YpQ07@  
* @since 2006-2-2 |Z"5zL10  
* @version 1.0 CH`_4UAX%  
*/ N:_U2[V^d  
public class ImprovedQuickSort implements SortUtil.Sort { MO1t 0Myc  
o<J_?7c~}  
private static int MAX_STACK_SIZE=4096; {I]X-+D|_  
private static int THRESHOLD=10; hYj!*P)uV  
/* (non-Javadoc) L,KK{o|Eq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qjtrU#n  
*/  Z>O2  
public void sort(int[] data) { fw[Z7`\Q5  
int[] stack=new int[MAX_STACK_SIZE]; wM2[i  
[|:kS  
int top=-1; 7,pn0,HI  
int pivot; s={jwI50  
int pivotIndex,l,r; bPe|/wp  
J7p'_\  
stack[++top]=0; 2$Fy?08q  
stack[++top]=data.length-1; fD1a)Az  
F$!K/Mm[  
while(top>0){ F5Xj}`}bq  
int j=stack[top--]; ZQ0R3=52r  
int i=stack[top--]; &idPO{G  
[1 ?  
pivotIndex=(i+j)/2; }8zw| (GR,  
pivot=data[pivotIndex]; "IvFkS=*Q  
/W vgC)  
SortUtil.swap(data,pivotIndex,j); YpGG^;M$  
k9'`<82Y  
file://partition i8kyYMPP  
l=i-1; h VQj$TA  
r=j; !^,<nP  
do{ F/QRgXV  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +ROwk  
SortUtil.swap(data,l,r); V1 H3}  
} l-} );zH74  
while(l SortUtil.swap(data,l,r); p1O[QQ|  
SortUtil.swap(data,l,j); +im>|  
^J[r<Dm8F  
if((l-i)>THRESHOLD){ -/7[\S  
stack[++top]=i; 9A-=T>|of  
stack[++top]=l-1; ;:%*h2  
} \QZ~w_  
if((j-l)>THRESHOLD){ pI>[^7  
stack[++top]=l+1; P`HDQ/^O  
stack[++top]=j; -VO&#Mt5u  
} Vzs_g]V  
lo!.%PP|  
} %+{[%?xh  
file://new InsertSort().sort(data); Ow@ }6&1  
insertSort(data); O\"k[V?.V  
} iz0GL&<  
/** t@Bl3Nt{  
* @param data WcG}9)9  
*/ CBVL/pxy  
private void insertSort(int[] data) { 5xsGSoa+  
int temp; kw gsf5[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bRhc8#kw)  
} VsrYU@V  
} lO>9Q]S<  
} /4!.G#DLQ  
w|AHE  
} ]m(C}}  
)qL UHE=  
归并排序: \D<w:\P  
TGxmc37?  
package org.rut.util.algorithm.support; H E'1Wa0r  
NY,ZTl_  
import org.rut.util.algorithm.SortUtil; DA(ur'D  
~@Wg3'&  
/** L  (#DVF  
* @author treeroot _Z>I"m  
* @since 2006-2-2 )^)j=xs  
* @version 1.0 gl$Ks+o d  
*/ tS@J)p+_(  
public class MergeSort implements SortUtil.Sort{ b;K]; o-/f  
6zf3A:]&{  
/* (non-Javadoc) u |EECjJn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  el"XD"*  
*/ eM1=r:jgE  
public void sort(int[] data) { I/&uiC{l@  
int[] temp=new int[data.length]; $ OAak  
mergeSort(data,temp,0,data.length-1); MB:VACCr  
} Xe J|Z)qZ  
Q6e;hl  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5{esL4k  
int mid=(l+r)/2; 97]$*&fH  
if(l==r) return ; %_>+K;<  
mergeSort(data,temp,l,mid); [Up0<`Q{I_  
mergeSort(data,temp,mid+1,r); dm+}nQI \  
for(int i=l;i<=r;i++){ r@.3.Q  
temp=data; dPtQ Sa  
} nbhzLUK  
int i1=l; RhPEda2  
int i2=mid+1; (X(296<;  
for(int cur=l;cur<=r;cur++){ TlA*~HG<Q  
if(i1==mid+1) i=ztWKwKf  
data[cur]=temp[i2++]; _Cd_i[K[  
else if(i2>r) 3SU:Xd(\o  
data[cur]=temp[i1++]; <.N33 7!  
else if(temp[i1] data[cur]=temp[i1++]; *GMs>" C  
else O6Gg?j  
data[cur]=temp[i2++]; H)Kt!v8  
} |fd}B5!c  
} 4YmN3i  
.0eHP  
} 49;2tl;F  
1,/L&_=_A  
改进后的归并排序: I {o\d'/  
Z#i5=,Bk  
package org.rut.util.algorithm.support; Mb2rHUr  
vA(')"DDT  
import org.rut.util.algorithm.SortUtil;  Du*O|  
] SErM#$*  
/** R\+O.vX  
* @author treeroot 5ZPe=SQ{  
* @since 2006-2-2 u{/!BCKE  
* @version 1.0 [p%OIqC`pB  
*/ UhX`BGpM{  
public class ImprovedMergeSort implements SortUtil.Sort { yU"'h[^  
+EnJyli  
private static final int THRESHOLD = 10; 3XeCaq'N  
6kc/  
/* f7Dx.-  
* (non-Javadoc) LhM{d  
* ,iUYsY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lYz$~/sd  
*/ OcBn1k.  
public void sort(int[] data) { z+J4XpX0,  
int[] temp=new int[data.length]; sT^^#$ub  
mergeSort(data,temp,0,data.length-1); -i}@o1o\  
} 1Xv- e8M  
,B,2t u2  
private void mergeSort(int[] data, int[] temp, int l, int r) { L'>t:^QTh  
int i, j, k; cE*Gd^  
int mid = (l + r) / 2; 3j2% '$>E^  
if (l == r) kdWk{ZT^  
return; 05<MsxB"w  
if ((mid - l) >= THRESHOLD) #hBDOXHPf  
mergeSort(data, temp, l, mid); fRTQ5V  
else Ve4!MM@ti  
insertSort(data, l, mid - l + 1); }tIIA"dZ  
if ((r - mid) > THRESHOLD) 7@.UkBOx  
mergeSort(data, temp, mid + 1, r); Mb I';Mq  
else ijYSYX@  
insertSort(data, mid + 1, r - mid); wHQyMq^  
FafOd9>AO  
for (i = l; i <= mid; i++) { ~D4%7U"dv  
temp = data; :EK.&% 2  
} mn=G6h T}W  
for (j = 1; j <= r - mid; j++) { ]hBp elKJ  
temp[r - j + 1] = data[j + mid]; crJyk#_  
} BO b#9r  
int a = temp[l]; a9ab>2G?FR  
int b = temp[r]; `]^JOw5o  
for (i = l, j = r, k = l; k <= r; k++) { o0>z6Ya<  
if (a < b) { e1dT~l  
data[k] = temp[i++]; ,qgph^C  
a = temp; ,$,6%"'"  
} else { 1 )aB']K%  
data[k] = temp[j--]; 9: bC{n  
b = temp[j]; nQc]f*  
} C?bq7kD:H  
} 05zBB  
} ,y[wS5li  
Q'] _3  
/** TR8<=  
* @param data JDi|]JY  
* @param l 2 $^n@<uZ@  
* @param i _MfB,CS  
*/ 'AX/?Srd  
private void insertSort(int[] data, int start, int len) { ,C88%k  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); uL^Qtmm>M  
} Y!LcS48X  
} 3_W1)vd{  
} yz}Agc4.I  
}  ZqQJFyV*  
Kb~s'cTxIO  
堆排序: 0/d+26lR  
)8ejT6r  
package org.rut.util.algorithm.support; }vkrWy^  
YFD'&N,sx  
import org.rut.util.algorithm.SortUtil; /sf:.TpVh  
+(iM]L$Fw%  
/** s+>VqyHgf  
* @author treeroot , ;L  
* @since 2006-2-2 MP\$_;&xB  
* @version 1.0 jN:!V t  
*/ &Avd  
public class HeapSort implements SortUtil.Sort{ <o^_il$W  
Y,OSQBgk  
/* (non-Javadoc) 9^Q:l0|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cg$@x\fJ  
*/ PR=:3-#R  
public void sort(int[] data) { %j%}iM/(<  
MaxHeap h=new MaxHeap(); /238pg~Cw5  
h.init(data); RwMK%^b  
for(int i=0;i h.remove(); [6Y6{.%~  
System.arraycopy(h.queue,1,data,0,data.length); :B?XNo  
} FN5*pVD;<  
<>`+" O}  
private static class MaxHeap{ kVk^?F  
JX,&im*BG  
void init(int[] data){ @e#eAJhU  
this.queue=new int[data.length+1]; _Z'j%/-4@D  
for(int i=0;i queue[++size]=data; d?(#NP#;  
fixUp(size); a<l(zJptG  
} @EH:4~  
} '+ 1<7jl&I  
{7 &(2Z]z  
private int size=0; kRs(A~ngc  
y*A#}b*0  
private int[] queue; [OBj2=  
z5-vx`  
public int get() { :IDD(<^9  
return queue[1]; rD)yEuYX  
} kD:O$8[J8  
2%"2~d7  
public void remove() { 9,=3D2x&  
SortUtil.swap(queue,1,size--); Z-;<R$  
fixDown(1); @K/}Ob4   
} _hyboQi  
file://fixdown Bsi HVr  
private void fixDown(int k) { j(mbUB*  
int j; `9rwu:3i  
while ((j = k << 1) <= size) { @O9.~6  
if (j < size %26amp;%26amp; queue[j] j++; tjc3;9  
if (queue[k]>queue[j]) file://不用交换 :U!knb"/>  
break; @.ebQR-:H  
SortUtil.swap(queue,j,k); p@]\ N  
k = j; )p'ZSXb  
} -o*IJQ_  
} uc9t0]o=h  
private void fixUp(int k) { 57IAH$n8o  
while (k > 1) { xWlj.Tjt}  
int j = k >> 1; =jIB5".  
if (queue[j]>queue[k]) 3a #2 }  
break; 4d3]L` f  
SortUtil.swap(queue,j,k); 2= 'gC|&s6  
k = j; j+AAhn  
} R{GOlxKs C  
} \xG>>A%  
d:*,HzG  
} Br.$:g#  
xrDHXqH  
} OW1i{  
!Kr|04Qp#x  
SortUtil: (hej 3;W  
wYy=Tl-N  
package org.rut.util.algorithm; ||3%REliC  
 4b]/2H  
import org.rut.util.algorithm.support.BubbleSort; d2sY.L  
import org.rut.util.algorithm.support.HeapSort; 7Y T%.ID  
import org.rut.util.algorithm.support.ImprovedMergeSort; Qa@b-v'by  
import org.rut.util.algorithm.support.ImprovedQuickSort; $qG;^1$  
import org.rut.util.algorithm.support.InsertSort; y<(q<V#0!S  
import org.rut.util.algorithm.support.MergeSort; 'fO[f}oa_.  
import org.rut.util.algorithm.support.QuickSort; vgY ) L  
import org.rut.util.algorithm.support.SelectionSort; nNJU@<|{*  
import org.rut.util.algorithm.support.ShellSort; 6L[Yn?;  
sy`@q<h(  
/** -d]-R ?mQ  
* @author treeroot !$N^Ak5#  
* @since 2006-2-2 #DK@&Gv  
* @version 1.0 ! J`>;&  
*/ D/QSC]"  
public class SortUtil { ;hb;%<xqT  
public final static int INSERT = 1; <[mT*  
public final static int BUBBLE = 2; pw|f4c7AH  
public final static int SELECTION = 3; 2"+8NfFl  
public final static int SHELL = 4; &#!5I;3EN  
public final static int QUICK = 5; 87WIDr  
public final static int IMPROVED_QUICK = 6; eV:I :::  
public final static int MERGE = 7; zOJ4I^^  
public final static int IMPROVED_MERGE = 8; d-/{@   
public final static int HEAP = 9; 3z7SK Gy  
u#(VR]u\7  
public static void sort(int[] data) { k4:$LFw@  
sort(data, IMPROVED_QUICK); <q@/ Yy32  
} QOXG:?v\  
private static String[] name={ $yxwB/O(  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ILi{5L  
}; !p$HS0c  
|f5WN&c  
private static Sort[] impl=new Sort[]{ kaM=Fk=t  
new InsertSort(), ptJ58U$Bb  
new BubbleSort(), #dy z  
new SelectionSort(), 4 mj\wBp  
new ShellSort(), 7#/->Y  
new QuickSort(), g7\MFertR^  
new ImprovedQuickSort(), 38ac~1HjE  
new MergeSort(), P?|F+RoX$  
new ImprovedMergeSort(), 9!'qLO  
new HeapSort() ]q!,onJ  
}; BK>3rjXi>a  
wf*G+&b d2  
public static String toString(int algorithm){ r~f*aD  
return name[algorithm-1]; ^a+W!  
} ivTx6-]  
w:[1,rRvT  
public static void sort(int[] data, int algorithm) { Qm9r>m6p@N  
impl[algorithm-1].sort(data); %3p~5jhm1  
} 2ed4xh V  
LPuc&8lGWf  
public static interface Sort { GSlvT:k  
public void sort(int[] data); m@(8-_  
} wWq(|"  
GFA D  
public static void swap(int[] data, int i, int j) { _6U=7<f  
int temp = data; ^7b[s pqE  
data = data[j]; 96a2G,c >V  
data[j] = temp; op!ft/Yyb  
} dP[vXhc  
} %w9/ gD  
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