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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。 : seL=  
插入排序: B K;w!]  
dG$0d_Pq  
package org.rut.util.algorithm.support; .NC}TFN|  
%lmRe(M  
import org.rut.util.algorithm.SortUtil; wpI4P:  
/** Zi)8KO[/0  
* @author treeroot T480w6-@  
* @since 2006-2-2 PyF4uCn"H  
* @version 1.0 }O{"qs#)  
*/ f}!26[_9{  
public class InsertSort implements SortUtil.Sort{ t"Hrn3w  
?@(H. D6'v  
/* (non-Javadoc) uK5Px!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hj1 jY  
*/ ::`wx@  
public void sort(int[] data) { 0E[Se|!  
int temp; 4et#Q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^)pY2t<^  
} Q1[s{,  
} ".ZiR7Z:$Y  
} YPEd XU8}  
es]m 6A  
} N8vl< Mq  
c.WT5|:qw  
冒泡排序: /XB1U[b  
0xcqX!(  
package org.rut.util.algorithm.support; uy{KV"%"^g  
1hG O*cq!  
import org.rut.util.algorithm.SortUtil; BI]t}7  
G#v7-&Yl6  
/** d`/{0:F  
* @author treeroot 9@B+$~:}7  
* @since 2006-2-2 ISmnZ@  
* @version 1.0 <,C})H?  
*/ T5;D0tM/  
public class BubbleSort implements SortUtil.Sort{ 2ZeL  
D ]eF3a.G  
/* (non-Javadoc) iH=@``Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |_*1/Wz@  
*/ uBgHtjmae  
public void sort(int[] data) { ;8Cqy80K  
int temp; ,Pm/ci( s  
for(int i=0;i for(int j=data.length-1;j>i;j--){ }tPl?P'`  
if(data[j] SortUtil.swap(data,j,j-1); ZP<X#]$qb  
} CcTJCuOS  
} s_TM!LRUcw  
} oJ+$&P(  
} 1P_bG47  
5 S& >9l  
} _K>m9Q2  
<-pbLL9  
选择排序: $@j7VPE  
/<Et   
package org.rut.util.algorithm.support; Vi_|m?E  
5P!17.W'u  
import org.rut.util.algorithm.SortUtil; IM/\t!*7  
L\[jafb_`  
/** ~^*tIIOX  
* @author treeroot ='j  
* @since 2006-2-2 Z5=!R$4  
* @version 1.0 V'$ eun  
*/ 4J1Q])G9  
public class SelectionSort implements SortUtil.Sort { {cA )jW\'  
L8 J/GVmj  
/* K3^2R-3:8  
* (non-Javadoc) CmZ?uo+Y  
* s>X;m.<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .Yx. Lm}  
*/ s@|?N+z  
public void sort(int[] data) { ceCshxTU  
int temp; KI{u:Lbi  
for (int i = 0; i < data.length; i++) { hl+Yr)0\  
int lowIndex = i; 6>Y}2fT}o3  
for (int j = data.length - 1; j > i; j--) { iC]}M  
if (data[j] < data[lowIndex]) { v oxlo>:  
lowIndex = j; W8^gPW*c5  
} g:g>;" B O  
} "$&F]0  
SortUtil.swap(data,i,lowIndex); "<WS Es  
} 2h!3[{M\  
} :jPAA`,  
T9^i#8-^  
} N\?iU8w=  
wF(FV4#gs  
Shell排序: lI 8"o>-~  
mx yT==E  
package org.rut.util.algorithm.support; UPC& O  
K&*FI (a  
import org.rut.util.algorithm.SortUtil; &g`a [#  
pqK3u)  
/** 0)NHjKP  
* @author treeroot l?q^j;{Dw  
* @since 2006-2-2 v\c3=DbO  
* @version 1.0 khfE<<$=  
*/ `dK\VK^  
public class ShellSort implements SortUtil.Sort{ '9)@U+yfQ  
3kMiC$  
/* (non-Javadoc) BhjXNf9[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^:0?R/A  
*/ ]Vsze4>Z[  
public void sort(int[] data) { c2nZd.SD|  
for(int i=data.length/2;i>2;i/=2){ zSO[f  
for(int j=0;j insertSort(data,j,i); ZS-9|EA<  
} |&JL6hN  
} C*9m `xh  
insertSort(data,0,1); vC7sJIch2<  
} ZttL*KK  
/dqKFxB1  
/** |F<aw?%  
* @param data ?>_.~b ~  
* @param j =h)H`  
* @param i q )[g VL  
*/  4Zq5  
private void insertSort(int[] data, int start, int inc) { $I9zJ"*  
int temp; :PLsA3[}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); oOlI*/OMb  
} 7~',q"4P/_  
} r0sd_@Oj  
} Q pX@;j  
YpL}R#  
} }Z6/b _kV  
?|33Np)  
快速排序: Z Uh<2F  
{1Qwwhov  
package org.rut.util.algorithm.support; 4aRYz\yT=  
BhKxI  
import org.rut.util.algorithm.SortUtil; TuU.yvkU  
c(jA"K[|b  
/** D fb&/ }  
* @author treeroot t*x;{{jL#(  
* @since 2006-2-2 %(E6ADB  
* @version 1.0 ubL Lhf  
*/ .28*vkH%C=  
public class QuickSort implements SortUtil.Sort{ o8,K1ic5#  
k"Is.[I?^  
/* (non-Javadoc) !qR(Rn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0KZ 3h|4lP  
*/ Hq9(6w9w  
public void sort(int[] data) { efh wbn  
quickSort(data,0,data.length-1); |'.SOm9)*  
} EPI*~=Z.U  
private void quickSort(int[] data,int i,int j){ A1C@'9R*  
int pivotIndex=(i+j)/2; &jJgAZ!  
file://swap q\,H9/.0k  
SortUtil.swap(data,pivotIndex,j); Ov9.qNT  
,[~EThcq  
int k=partition(data,i-1,j,data[j]); *<@  
SortUtil.swap(data,k,j); `/U:u9H9v  
if((k-i)>1) quickSort(data,i,k-1); 8_lD*bEt   
if((j-k)>1) quickSort(data,k+1,j); ^K"`k43{  
]?r8^LyZ4  
} [B4?Z-K%  
/** 5E@V@kw  
* @param data qg O)@B+  
* @param i Z-Uq89[HZ  
* @param j ^uj+d"a)  
* @return pv T!6+  
*/ \|(;q+n?k  
private int partition(int[] data, int l, int r,int pivot) { [bp"U*!9P  
do{ ,QQ:o'I!  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); L.R  
SortUtil.swap(data,l,r); u/zC$L3B(  
} Y /+ D4^ L  
while(l SortUtil.swap(data,l,r); Wp'\NFe 8  
return l; {p-%\nOC  
} X;1q1X)K  
;2iZX=P`n  
} $5A XE;~{  
:J"e{|g',  
改进后的快速排序: f|`{P P`\  
H [v~  
package org.rut.util.algorithm.support; Cn"N5(i  
gk&?h7P"<  
import org.rut.util.algorithm.SortUtil; iTX.? *  
&5a>5ZG}  
/** 'i,<j s3\f  
* @author treeroot uYl ?Q  
* @since 2006-2-2 My ^pQ]@  
* @version 1.0 e\h:==f  
*/ ka'MF;!rc  
public class ImprovedQuickSort implements SortUtil.Sort { gW, ET  
#RSxo 4  
private static int MAX_STACK_SIZE=4096; XBc+_=)$  
private static int THRESHOLD=10; }bHpFe  
/* (non-Javadoc) uJWX7UGuz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HGKm?'['   
*/ =19]a  
public void sort(int[] data) { "P|G^*"~2  
int[] stack=new int[MAX_STACK_SIZE]; 1#@'U90xf  
e7;]+pN]J  
int top=-1; sJD"u4#y  
int pivot; 4?&=H *H:  
int pivotIndex,l,r; OT[t EqQ  
/i"EVN`t  
stack[++top]=0; sq^,l6es>  
stack[++top]=data.length-1; A@#dv2JzP  
0'~ ?u'  
while(top>0){ M$GD8|*e  
int j=stack[top--]; Dn@ n:m  
int i=stack[top--]; VcP#/&B|  
l9Vim9R5T  
pivotIndex=(i+j)/2; Ax\Fg 5  
pivot=data[pivotIndex]; 5 9X|l&/  
O e#k|  
SortUtil.swap(data,pivotIndex,j); %9Ue`8  
q^Z\V?  
file://partition M|Se| *w  
l=i-1; v`fUAm/  
r=j; QXrK-&fju  
do{ C]`Y PM5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,lUo@+  
SortUtil.swap(data,l,r); J]N}8 0  
} qdm!]w.G5  
while(l SortUtil.swap(data,l,r); Ia\Nj _-%L  
SortUtil.swap(data,l,j); .UDZW*  
+VeLd+Q}  
if((l-i)>THRESHOLD){ crT[;w  
stack[++top]=i; qm '$R3g  
stack[++top]=l-1; NUU}8a(K  
} 9O)>>1}*S  
if((j-l)>THRESHOLD){ 3aOFpCs|#  
stack[++top]=l+1; oM VJ+#[x  
stack[++top]=j; =FKB)#N  
} ( u _ sz  
)CB?gW  
} zqeU>V~<F  
file://new InsertSort().sort(data); $D89|sy  
insertSort(data); HaSH0eTw  
} UOY1^wY  
/** 3S9~rLrn?  
* @param data T;%SB&  
*/ ygPZkvZ  
private void insertSort(int[] data) { fG{oi(T  
int temp; 07#!b~N  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :Y'nye3:  
} p[wjHfIq  
} 3ty){#:  
} 5|b/G  
w.3R1}R  
} i6-K!  
#=tWCxf=  
归并排序: *vb)d0}P  
@Q^;qMy  
package org.rut.util.algorithm.support; #i,O "`4  
v:>P;\]r9M  
import org.rut.util.algorithm.SortUtil; 8 2qe|XD4p  
HlO+^(eX  
/** Ju\"l8[f  
* @author treeroot NX; &V7  
* @since 2006-2-2 ) ad-s  
* @version 1.0 w7C=R8^  
*/ bcZonS  
public class MergeSort implements SortUtil.Sort{ IIPf5 Z}A  
pxF!<nN1,  
/* (non-Javadoc) -K !-a'J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vuAjAeKm  
*/ e,BJD>N ?  
public void sort(int[] data) { G pd:k  
int[] temp=new int[data.length]; ;CW$/^QNr5  
mergeSort(data,temp,0,data.length-1); 3)ip@29F  
} |j+~Td3})&  
>"[u.1J_'I  
private void mergeSort(int[] data,int[] temp,int l,int r){ YU`{  
int mid=(l+r)/2; YszhoHYh  
if(l==r) return ; 26**tB<  
mergeSort(data,temp,l,mid); &td#m"wI  
mergeSort(data,temp,mid+1,r); Gl:AS PZ6  
for(int i=l;i<=r;i++){ x:xQXjJ  
temp=data; {)y4Qp  
} RoTT%c P_  
int i1=l; )t4C*+9<U  
int i2=mid+1; 71%u|k8|  
for(int cur=l;cur<=r;cur++){ -FI1$  
if(i1==mid+1)  fwEi//1  
data[cur]=temp[i2++]; J]UH q$B  
else if(i2>r) '3Ri/V,  
data[cur]=temp[i1++]; ,?qS#B+>  
else if(temp[i1] data[cur]=temp[i1++]; "xOeBNRjV  
else Ojs\2('u  
data[cur]=temp[i2++]; L:<'TXsRA  
} ke0W?  
} QKO(8D6+  
I%Awj(9BS  
} qha<.Ro  
nAzr!$qbNv  
改进后的归并排序: (tgaH,G  
hq BRh+[  
package org.rut.util.algorithm.support; 8n)Q^z+ K  
Ua]zTMI  
import org.rut.util.algorithm.SortUtil; sF$m?/Kt  
D4\I;M^  
/** ]Oy<zU  
* @author treeroot -O5m@rwt<  
* @since 2006-2-2 R4/@dA0  
* @version 1.0 Ir'f((8:  
*/ (0+m&, z  
public class ImprovedMergeSort implements SortUtil.Sort { $W]bw#NH  
[OcD#~drO  
private static final int THRESHOLD = 10; riL!]'akV  
|#wz)=mD  
/* rXPXO=F1/  
* (non-Javadoc) S&*pR3,u  
* 5*AKl< Jl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #vSI_rt9I  
*/ b<n)`;  
public void sort(int[] data) { %?fzT+-=%  
int[] temp=new int[data.length]; }>w4!  
mergeSort(data,temp,0,data.length-1); 4Z] 35*  
} T!PX?  
7r>W r#  
private void mergeSort(int[] data, int[] temp, int l, int r) { DFonK{  
int i, j, k; NSq=_8  
int mid = (l + r) / 2; U~m.I  
if (l == r) 0YL0Oa+7  
return; #7=LI\  
if ((mid - l) >= THRESHOLD) St`m52V(5X  
mergeSort(data, temp, l, mid); YLGLr @:q  
else Q)>'fZ)  
insertSort(data, l, mid - l + 1); EMG*8HRI>r  
if ((r - mid) > THRESHOLD) ;j=1 oW  
mergeSort(data, temp, mid + 1, r); -+> am?  
else u i1m+  
insertSort(data, mid + 1, r - mid); RHbwq]  
w.f [)  
for (i = l; i <= mid; i++) { 9YABr> ?  
temp = data; $b} +5  
} #pfosC[  
for (j = 1; j <= r - mid; j++) { i"xDQ$0G6  
temp[r - j + 1] = data[j + mid]; %a `dO EO  
} k:Q<Uanc[  
int a = temp[l]; 3:Wr)>l}#  
int b = temp[r]; gwJu&HA/  
for (i = l, j = r, k = l; k <= r; k++) { I>a a'em  
if (a < b) { w C"%b#(}  
data[k] = temp[i++]; S41>VbtEp  
a = temp; P{18crC[1  
} else { DF2&j!  
data[k] = temp[j--]; Ysu/7o4  
b = temp[j]; 5ov%(QI  
} :(Bi {cw  
} $Stu-l1e a  
} $P3nP=mf  
[3Rj?z"S  
/** 5b p"dIe  
* @param data Qs:r@"hE  
* @param l s 'x mv{|  
* @param i 7g9^Jn  
*/ Ziimz}WHF  
private void insertSort(int[] data, int start, int len) { ".f:R9-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5g5NTm`=<  
} Umg81!  
} WKsx|a]U  
} P hu| hx<  
} Sj?sw]3  
R:?vY!  
堆排序: `x)bw  
|m- `, we  
package org.rut.util.algorithm.support; 1#"Q' ,7  
4a!7|}W  
import org.rut.util.algorithm.SortUtil; (+dRD] |T  
vq1&8=  
/** G`"Cqs<  
* @author treeroot <>_Wd AOuD  
* @since 2006-2-2 QE2^.|d{  
* @version 1.0 -QDgr`%5  
*/ 6/ipdi[ _  
public class HeapSort implements SortUtil.Sort{ \DK*> k  
2]=I'U<E!  
/* (non-Javadoc) @~3c"q;i7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dRm'$ G9  
*/ j*d~h$[k  
public void sort(int[] data) { N1~$ +  
MaxHeap h=new MaxHeap(); "|`9{/]  
h.init(data); X>7]g670@  
for(int i=0;i h.remove(); \*aLyyy3  
System.arraycopy(h.queue,1,data,0,data.length); <|3v@  
} @l GnG  
XWpnZFjE  
private static class MaxHeap{ ^1=|(Z/  
+Q31K7Gr  
void init(int[] data){ pIiED9  
this.queue=new int[data.length+1]; +z0}{,HX  
for(int i=0;i queue[++size]=data; [nIG_j>D-f  
fixUp(size); v qMk)htIz  
} jSp&mD*xv  
} +|)1_NK  
x=Jn&4q  
private int size=0; 6xh#;+e }  
_PUm Pom.  
private int[] queue; z.&% >%TPP  
N09+idg  
public int get() { Mk/!,N<h#  
return queue[1]; h./vTNMc  
} ^jjJM|a  
E :=KH\2f  
public void remove() { )+4}Ix/q  
SortUtil.swap(queue,1,size--); E(kpK5h{  
fixDown(1); SoU'r]k1x  
} #UCQiQfP  
file://fixdown yVQz<tX|  
private void fixDown(int k) { Y zW7;U S  
int j; "UGj4^1f  
while ((j = k << 1) <= size) { r5fkt>HZ  
if (j < size %26amp;%26amp; queue[j] j++; 3H#/u! W  
if (queue[k]>queue[j]) file://不用交换 #r)1<}_e#  
break; ugCS &  
SortUtil.swap(queue,j,k); h?3l  
k = j; Ny,A#-?  
} MI'l4<>u  
} W<|K  
private void fixUp(int k) { Bi :wP/>v  
while (k > 1) { H9Q7({v  
int j = k >> 1; uf'P9MA}>  
if (queue[j]>queue[k]) 8pMZ~W;  
break; 8~(+[[TQ@  
SortUtil.swap(queue,j,k); >ydb?  
k = j; [=ak>>8  
} [Pwo,L,)  
} |z.GSI_!)  
bL],KW;Q  
} |\n)<r_  
#IhLpO  
} qL5#.bR  
ZHD0u)ri=J  
SortUtil:  Am%a4{b  
U"y'Kd  
package org.rut.util.algorithm; _7.GzQJ  
|+xtFe  
import org.rut.util.algorithm.support.BubbleSort; ca3BJWY}J  
import org.rut.util.algorithm.support.HeapSort; )):22}I#  
import org.rut.util.algorithm.support.ImprovedMergeSort; GHC?Tp   
import org.rut.util.algorithm.support.ImprovedQuickSort; (<R\  
import org.rut.util.algorithm.support.InsertSort; <ivqe"m  
import org.rut.util.algorithm.support.MergeSort; p/WH#4Xdr  
import org.rut.util.algorithm.support.QuickSort; 8 ]06!7S}  
import org.rut.util.algorithm.support.SelectionSort; *tfDXQ^mN  
import org.rut.util.algorithm.support.ShellSort; 1;kG[z=A  
+}XL>=-5  
/** ciGpluQF  
* @author treeroot N!Wq}#&l  
* @since 2006-2-2 `Ivw`}L  
* @version 1.0 Z++Z@J"  
*/ m7wc)"`t  
public class SortUtil { ?WQd  
public final static int INSERT = 1; 'Rkvsch  
public final static int BUBBLE = 2; pG F5aF7T  
public final static int SELECTION = 3; CziaxJ  
public final static int SHELL = 4; x"l lX  
public final static int QUICK = 5; :7Z\3_D/  
public final static int IMPROVED_QUICK = 6; opcR~tg@r  
public final static int MERGE = 7; D PS1GO*  
public final static int IMPROVED_MERGE = 8; J={OOj  
public final static int HEAP = 9; iPY vePQ  
<m /b]|  
public static void sort(int[] data) { yg-FJ/  
sort(data, IMPROVED_QUICK); MpIw^a3(r  
} Pm#x?1rAj  
private static String[] name={ (o6[4( G  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" AJ?}Hel[0  
}; E/8u'  
/x:(SR2,  
private static Sort[] impl=new Sort[]{ [[?[? V ,  
new InsertSort(), : >wQwf  
new BubbleSort(), T7lj39pJq  
new SelectionSort(), n:*_uc^C  
new ShellSort(), zJuRth)(,  
new QuickSort(), 4)odFq:  
new ImprovedQuickSort(), *pb:9JKi  
new MergeSort(), `gt&Y-  
new ImprovedMergeSort(), or%gTVZ  
new HeapSort() >1a \ %G  
}; juYA`:qE&  
!M]%8NTt2  
public static String toString(int algorithm){ pqH( Tbjq  
return name[algorithm-1]; (o*e<y,}W  
} vTMP&a'5L  
E)80S.V  
public static void sort(int[] data, int algorithm) { qb-2QPEB  
impl[algorithm-1].sort(data); RQo$iISwy  
} $d2kHT  
{8{t]LK<  
public static interface Sort { 8_<&f%/  
public void sort(int[] data); esh$*)1  
} a81!~1A  
^x_ >r6  
public static void swap(int[] data, int i, int j) { ;zZ,3pl-E  
int temp = data; ovQS ET18b  
data = data[j]; LZUA+x(  
data[j] = temp; (zS2Ndp  
} ^.@yF;H  
} |C$:]MZx  
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