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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。 IhiGP {  
插入排序: %Td )0Lqp  
}6-ZE9H-v  
package org.rut.util.algorithm.support; ow/57P  
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import org.rut.util.algorithm.SortUtil; CN2_bz  
/** P0i V<T4^  
* @author treeroot phYDs9-K  
* @since 2006-2-2 / EMJSr  
* @version 1.0 1mSaS4!"B  
*/ O3N_\B:  
public class InsertSort implements SortUtil.Sort{ f7hXQ|$  
 Q2p)7G  
/* (non-Javadoc) \]Dt4o*yZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I<=Df5M  
*/ &48_2Q"{  
public void sort(int[] data) { i1oKrRv  
int temp; M0c 9pE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *RR[H6B^]X  
}  UkfB^hA  
} +<.\5+  
} #Rew [\$  
%vO<9fE|1  
} Vh<A2u3&  
+ q''y  
冒泡排序: kz q29S  
'(#g1H3  
package org.rut.util.algorithm.support; S:8OQI  
XjE>k!=I  
import org.rut.util.algorithm.SortUtil; gLL\F1|0x  
S*"u/b;  
/** -Z^4L  
* @author treeroot quo^fqS&a  
* @since 2006-2-2 RiO="tX'  
* @version 1.0 gcJF`H/iNK  
*/ -@IL"U6  
public class BubbleSort implements SortUtil.Sort{ eX2<}'W<  
d'l$$%zJ  
/* (non-Javadoc) Iia.k'N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `!G7k  
*/ !RlC~^ -  
public void sort(int[] data) { M8@_Uj  
int temp; 5M23/= N  
for(int i=0;i for(int j=data.length-1;j>i;j--){ cgj.e  
if(data[j] SortUtil.swap(data,j,j-1); On1v<SD$[  
} #vf_D?^  
} l #@&~f[  
} z}.D" P+  
} cX At :m  
1Qh`6Ya f  
} /.=r>a }l  
2 [!Mx&^  
选择排序: P` '$  
kDB iBNdB  
package org.rut.util.algorithm.support; m]IysyFFK  
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import org.rut.util.algorithm.SortUtil; >Jm"2U}lZW  
@ERu>nSP  
/** )Hf~d=GG  
* @author treeroot >WM3|  
* @since 2006-2-2 ?z"KnR+?Q  
* @version 1.0 `<j_[(5yb  
*/ 1.R kIB  
public class SelectionSort implements SortUtil.Sort { X^< >6|)  
gvnj&h.GV  
/* djT. 1(  
* (non-Javadoc) 9b6!CNe!  
* y67uH4&Vm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ggou*;'  
*/ !%mi&ak(Rn  
public void sort(int[] data) { 9.0WKcwg  
int temp; =p&sl;PsLw  
for (int i = 0; i < data.length; i++) { 4w{-'M.B  
int lowIndex = i; Yb=6C3l@  
for (int j = data.length - 1; j > i; j--) { wk 02[  
if (data[j] < data[lowIndex]) { E '%lxr  
lowIndex = j; * Zd_ HJi  
} CW:gEm+  
} D&*LBQ/K  
SortUtil.swap(data,i,lowIndex); >;i\v7  
} Qg0vG]  
} " OGdE_E  
{rPk3  
} d.pp3D 9/  
Q @2(aR  
Shell排序: :HW>9nD.  
WF/l7u#4i  
package org.rut.util.algorithm.support; i<u9:W  
y3yvZD  
import org.rut.util.algorithm.SortUtil; G[q9A$yw  
0RyFv+  
/** yx0Q+Sm1:  
* @author treeroot O3!d(dY=_  
* @since 2006-2-2 K&UE0JO'  
* @version 1.0 B <+K<,S  
*/ k!doIMj  
public class ShellSort implements SortUtil.Sort{ 3c u9[~K  
PV,"-Nv,  
/* (non-Javadoc) JIUtj7 HQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~tNY"{OV#  
*/ A1Q +0  
public void sort(int[] data) { n(jjvLf  
for(int i=data.length/2;i>2;i/=2){ TmiWjQv`  
for(int j=0;j insertSort(data,j,i); 797X71>  
} 5.k}{{+  
} S+FQa7k  
insertSort(data,0,1); G&o64W;-s  
} ,U%=rfB~  
y~p4">]  
/** k_Tswf3  
* @param data <bdyAUeFw  
* @param j BPWnck=%  
* @param i Z}[xQ5  
*/ J v<$*TVS0  
private void insertSort(int[] data, int start, int inc) { Ofm5[q=  
int temp; >h[(w  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); sA\L7`2H  
} M@O2 WB1ws  
} Ea4 * o  
} 6{7 3p@  
ycjJbL(.  
} L*O>IQh2  
XTj73 MWY  
快速排序: k6J\Kkk(  
+=, u jO:  
package org.rut.util.algorithm.support; S$K}v,8.sr  
.b _?-Fv  
import org.rut.util.algorithm.SortUtil; W^(Iw%ek  
o PaZ  
/** m %Y( O  
* @author treeroot s$3`X(Pn  
* @since 2006-2-2 WFj*nS^~l  
* @version 1.0 DoG%T(M!a9  
*/  ,F}r@  
public class QuickSort implements SortUtil.Sort{  i_y:4  
sVcdj|j  
/* (non-Javadoc) +@>:%yX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tc,$TCF  
*/ }3sN+4  
public void sort(int[] data) { gV.f*E1C  
quickSort(data,0,data.length-1); qwP$~Bj  
} &>V/X{>$`K  
private void quickSort(int[] data,int i,int j){ 2C{/`N  
int pivotIndex=(i+j)/2; (0g7-Ci  
file://swap }Eb]9c\  
SortUtil.swap(data,pivotIndex,j); ^vn\4  
lO_c/o$  
int k=partition(data,i-1,j,data[j]); :Q=z=`*2w  
SortUtil.swap(data,k,j); UnjNR[=  
if((k-i)>1) quickSort(data,i,k-1);  6s5b$x  
if((j-k)>1) quickSort(data,k+1,j); ,$BgR2^  
tO4):i1  
} T\cR2ZT~  
/** =Pj@g/25u  
* @param data s@ z{dmL  
* @param i Ym:{Mm=ud  
* @param j  s<d!+<  
* @return KJ pj  
*/ N GSS:  
private int partition(int[] data, int l, int r,int pivot) { Pn J*Zea  
do{ [%t3[p<)O  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); enPLaiJ'|q  
SortUtil.swap(data,l,r); 94+/wzWvi  
} +:!ScG*  
while(l SortUtil.swap(data,l,r); ~xE=mg4le  
return l; Tr$i= M  
} e^Aa!  
jPpRsw>  
} eB7>t@ED  
& L3UlL  
改进后的快速排序:  *0-v!\{  
[5!'ykZ  
package org.rut.util.algorithm.support; &!6DC5  
T|!D>l'  
import org.rut.util.algorithm.SortUtil; . Jb?]n  
2pjW,I!`  
/** O!yakU+  
* @author treeroot L=,Y1nO:p  
* @since 2006-2-2 &:q[-K@!  
* @version 1.0 '}T;b}&s  
*/ =tNzGaWJ  
public class ImprovedQuickSort implements SortUtil.Sort { ;*.(.  
w'|&5cS  
private static int MAX_STACK_SIZE=4096; N-D(y  
private static int THRESHOLD=10; Yg$@Wb6  
/* (non-Javadoc) '1]+8E `Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l3BD <PB2S  
*/ 2DUr7r M  
public void sort(int[] data) { /<6ywLD  
int[] stack=new int[MAX_STACK_SIZE]; \ U Ax(;  
^J0zXe -d  
int top=-1; l`G(O$ct  
int pivot; w/O<.8+  
int pivotIndex,l,r; erXy>H[;  
'HJ/2-=  
stack[++top]=0; *$JB`=Q  
stack[++top]=data.length-1; t18UDR{  
v&e-`.xR  
while(top>0){ 6#fOCr;f7  
int j=stack[top--]; T7^ulG1'  
int i=stack[top--]; A"0wvk)UcY  
J &{qppN  
pivotIndex=(i+j)/2; _IC,9bbg  
pivot=data[pivotIndex]; {zY`h6d  
@T5YsX]qb7  
SortUtil.swap(data,pivotIndex,j); sE-x"c  
xcw%RUC-  
file://partition cJSVT8  
l=i-1; m; 1'u;  
r=j; 0GS{F8f~,  
do{ ?_8%h`z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T.J`S(oI  
SortUtil.swap(data,l,r); 4|FRg  
} NP$e-" 1  
while(l SortUtil.swap(data,l,r); *&(2`#C;  
SortUtil.swap(data,l,j); @X K>  
N?\bBt@  
if((l-i)>THRESHOLD){ E]\D>[0O  
stack[++top]=i; :m]/u( /N  
stack[++top]=l-1; g'KzdG`O0  
} O >nK ,.  
if((j-l)>THRESHOLD){ ZGA)r0] P`  
stack[++top]=l+1; :jBZK=3F>  
stack[++top]=j; Q@7l"8#[t  
} nt drXg  
,tcP=f dk]  
} "3\oQvi.  
file://new InsertSort().sort(data); | A3U@>6  
insertSort(data); MRjH40" 2  
} +{5JDyh0  
/** 1XqIPiXJ  
* @param data A<mj8qz  
*/ o`b$^hv{A  
private void insertSort(int[] data) { Hde]DK,d  
int temp; W\&WS"=~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N 9c8c  
} :a#F  
} N$C{f;xV  
} L[CU  
@>M8Pe  
} &/sGh0  
oK#\HD4U  
归并排序: K5 5} Wi  
D LNa6  
package org.rut.util.algorithm.support; o lYPlH F  
;RNM   
import org.rut.util.algorithm.SortUtil; caGML|DeI  
c:3@[nF~  
/** 1P(%9  
* @author treeroot w 9G_>+?E  
* @since 2006-2-2 f0/jwfL  
* @version 1.0 l.XknF  
*/ 17WNJ  
public class MergeSort implements SortUtil.Sort{ 7vi i9Am7  
h9w@oRp`~  
/* (non-Javadoc) _=o1?R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "L9C  
*/ N|UBaPS|o  
public void sort(int[] data) { 0q:(-z\S4  
int[] temp=new int[data.length]; c_@XQ&DC`  
mergeSort(data,temp,0,data.length-1); bc `UA  
} T g3:VD  
<I>%m,  
private void mergeSort(int[] data,int[] temp,int l,int r){ =@Q#dDnFu%  
int mid=(l+r)/2; ,AdusM  
if(l==r) return ; ]jHgo](%  
mergeSort(data,temp,l,mid); ,:v.L}+Z  
mergeSort(data,temp,mid+1,r); &?KPu?9  
for(int i=l;i<=r;i++){ 4C l, Iw/;  
temp=data; o}WB(WsG  
} H @_eFlT t  
int i1=l; 4$0jz'  
int i2=mid+1; A Oby*c  
for(int cur=l;cur<=r;cur++){ A8 \U CG  
if(i1==mid+1) @`w'   
data[cur]=temp[i2++]; B.]qrS|  
else if(i2>r) -s9Y(>  
data[cur]=temp[i1++]; 1 ;cv-W  
else if(temp[i1] data[cur]=temp[i1++]; r{pI-$  
else UiJ^~rn  
data[cur]=temp[i2++]; *Gg1h@&  
} di-O*ug  
} Aivu%}_|  
l84h%,  
} a9yIV5_N  
ArNur~  
改进后的归并排序: 2(c<U6#C'l  
4a(g<5wfI  
package org.rut.util.algorithm.support; @?<N +qdH>  
Iq4Kgc  
import org.rut.util.algorithm.SortUtil; 4 ?9soc  
(Wm/$P;  
/** d%}crM-KTL  
* @author treeroot r4;5b s6wm  
* @since 2006-2-2 gGtep*k  
* @version 1.0 YH /S2D  
*/ !Z#_X@NFc  
public class ImprovedMergeSort implements SortUtil.Sort { D__lqboz  
anHBy SI3  
private static final int THRESHOLD = 10; ]I{qp~^#n  
n.2E8m/  
/* vDu0  
* (non-Javadoc) tb-OKZq  
* }4bB7,j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p{mxk)A  
*/ '#cT4_D^lI  
public void sort(int[] data) { uznoyj6g  
int[] temp=new int[data.length]; K$MJ#Zx^  
mergeSort(data,temp,0,data.length-1); ;whFaQi 4  
} #JJp:S~`   
/E`l:&89)  
private void mergeSort(int[] data, int[] temp, int l, int r) { l%sp[uqcg  
int i, j, k; Nw9-pQ  
int mid = (l + r) / 2; ,omp F$%  
if (l == r) AJ;u&&c4C\  
return; rK(x4]I l"  
if ((mid - l) >= THRESHOLD) 8w{#R{w  
mergeSort(data, temp, l, mid); xm%[}Dt]  
else XBfiaj  
insertSort(data, l, mid - l + 1); ,W)IVc   
if ((r - mid) > THRESHOLD) q|47;bK'  
mergeSort(data, temp, mid + 1, r); /RA1d<~$q  
else E1Ru)k{B  
insertSort(data, mid + 1, r - mid); -V;0_Nx7p  
)8 "EI-/.  
for (i = l; i <= mid; i++) { 68&6J's;  
temp = data; Pe+ 8~0o=R  
} U/1[~429  
for (j = 1; j <= r - mid; j++) { mV:RmA  
temp[r - j + 1] = data[j + mid]; r 85Xa'hh  
} ,? 0-=o  
int a = temp[l]; F:*[  
int b = temp[r]; L}e"nzTE6I  
for (i = l, j = r, k = l; k <= r; k++) { <B ]i80.  
if (a < b) { Dyouk+08x  
data[k] = temp[i++]; 1jUhG2y  
a = temp; rZ8Y=) e  
} else { (n":] 8}  
data[k] = temp[j--]; WuP([8  
b = temp[j]; X/`#5<x  
} :/yr(V{  
} [6,]9|~  
} J'G`=m"-'  
.R$+#_  
/** s0XRL1kWr  
* @param data .T#y N\S1  
* @param l #q~3c;ec  
* @param i *!r\GGb  
*/ :Fi%Cef|  
private void insertSort(int[] data, int start, int len) { IS0HV$OI  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); h30QCk  
} DJ mQZ+{2  
} (PsSE:r}+  
} jM3Y|}+  
} !_XU^A>  
 \pewbu5^  
堆排序: #FQm/Q<0  
)5GdvqA  
package org.rut.util.algorithm.support; hSx+ {4PZ  
0TuOY%+  
import org.rut.util.algorithm.SortUtil; 68'-1}  
lry& )G=5  
/** JGSk4  
* @author treeroot }l]3m=)  
* @since 2006-2-2 pU:C =hq4  
* @version 1.0 x;ICV%g/  
*/ K+h9bI/Sf  
public class HeapSort implements SortUtil.Sort{ (2O} B.6  
[/+dHW|  
/* (non-Javadoc) #U!(I#^3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kbz7  
*/ 8CnI%_Su  
public void sort(int[] data) { -KIVnV=&m  
MaxHeap h=new MaxHeap(); A<YZBR_  
h.init(data); U2[3S\@  
for(int i=0;i h.remove(); (jo(bbpj  
System.arraycopy(h.queue,1,data,0,data.length); 48~m=mI  
} l# !@{ <  
NDIc?kj~  
private static class MaxHeap{ p(x1D]#Z[  
^O$[Y9~*  
void init(int[] data){ ~P]HG;$?n  
this.queue=new int[data.length+1]; r_g\_y7ua  
for(int i=0;i queue[++size]=data; 0'q(XB`i=  
fixUp(size); H%01&u  
} SVg@xu+  
} Wy^[4|6  
7>#L  
private int size=0; ~G{$P'[  
WnJLX ^;  
private int[] queue; I?>-  
#)PGQ)(  
public int get() { MOqA$b  
return queue[1]; VH7iH|eW  
} W3o }.|]  
S,"ChR  
public void remove() { OO !S w  
SortUtil.swap(queue,1,size--); S\v&{  
fixDown(1); St3(1mApl  
} W kDn  
file://fixdown j6R{  
private void fixDown(int k) { 0IPhVG~#  
int j; t7!>5e)C}  
while ((j = k << 1) <= size) { t5jhpPVf  
if (j < size %26amp;%26amp; queue[j] j++;  ,3@15j  
if (queue[k]>queue[j]) file://不用交换 :|m~<'g  
break; vY0V{u?J  
SortUtil.swap(queue,j,k); LG&Q>pt.  
k = j; *v:,rh  
} ?^yh5   
} /_k hFw  
private void fixUp(int k) { UwL"%0u  
while (k > 1) { jzJ1+/9  
int j = k >> 1; ]!tYrSM!  
if (queue[j]>queue[k]) y9G57D  
break; Cj4b]*Q,  
SortUtil.swap(queue,j,k); YAC zznN  
k = j; )(ZPSg$/F  
} o wpJ7S1~  
} ~gi( 1<#  
@Pb 1QLiz  
} d"d)<f   
%\{?(baOA  
} Eps\iykB  
tFST.yT>zg  
SortUtil: bJ,=yB+0  
eZ.0,A*1B1  
package org.rut.util.algorithm; MY<!\4/  
AXU!-er$  
import org.rut.util.algorithm.support.BubbleSort; Acq>M^E3  
import org.rut.util.algorithm.support.HeapSort; ^0ZKHR(}e  
import org.rut.util.algorithm.support.ImprovedMergeSort; j=jrzG+`  
import org.rut.util.algorithm.support.ImprovedQuickSort; E'BH7JV  
import org.rut.util.algorithm.support.InsertSort; _@~kYz  
import org.rut.util.algorithm.support.MergeSort; FUqhSW  
import org.rut.util.algorithm.support.QuickSort; <C.$Db&9  
import org.rut.util.algorithm.support.SelectionSort; RkH oT^  
import org.rut.util.algorithm.support.ShellSort; -< dMD_  
W'2-3J  
/** R:IS4AaS  
* @author treeroot |v %RjN  
* @since 2006-2-2 l3pW{p  
* @version 1.0 9y|&T  
*/ Fx88 R !  
public class SortUtil { In9|n^=H@  
public final static int INSERT = 1; jVFRqT%  
public final static int BUBBLE = 2; HH~  du  
public final static int SELECTION = 3; @#--dOWYR  
public final static int SHELL = 4; KlqJ EtO_  
public final static int QUICK = 5; =3v 1]7 X  
public final static int IMPROVED_QUICK = 6; UVBw;V  
public final static int MERGE = 7; W$MEbf%1  
public final static int IMPROVED_MERGE = 8; iQ}sp64  
public final static int HEAP = 9; *6x^w%=A  
:qSi>KCGh  
public static void sort(int[] data) { )|^<woli,  
sort(data, IMPROVED_QUICK); >yT@?!/Q>'  
} zm3MOH^a  
private static String[] name={ ~lalc ^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" < ,cIc]eX  
}; \,bFm,kC?  
Y %D*O  
private static Sort[] impl=new Sort[]{ WWs[]zr  
new InsertSort(), gS<{ekN  
new BubbleSort(), pS@VLXZP  
new SelectionSort(), gK#fuQ$hH  
new ShellSort(), x< y[na  
new QuickSort(), fJ"~XTN}T  
new ImprovedQuickSort(), L+ETMk0  
new MergeSort(), gZ >orZL'  
new ImprovedMergeSort(), wZ3 vF)2s  
new HeapSort() F']%q 0  
}; U;Y}2  
aj'8;E+  
public static String toString(int algorithm){ }L7F g%,  
return name[algorithm-1]; J'^$|/Q  
} 1> @|  
F-7b`cF9[r  
public static void sort(int[] data, int algorithm) { KsU&<eQ  
impl[algorithm-1].sort(data); <QW1fE  
} :8|3V~%m  
*Qwhi&k  
public static interface Sort { KRR^?  
public void sort(int[] data); <<zz*;RJJ  
} 6M vR R  
7 }MJK)  
public static void swap(int[] data, int i, int j) { -0IFPL8  
int temp = data; !#4HGjPI  
data = data[j]; kR~4O$riG  
data[j] = temp; mF:s-+  
} ABe^]HlH  
} !2M[  
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