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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。 LA +BH_t&  
插入排序: Bm e_#  
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package org.rut.util.algorithm.support; !<EQVqj6  
"J.7@\^ h/  
import org.rut.util.algorithm.SortUtil; QXaE2}}P  
/** 5u:{lcC.X  
* @author treeroot {.r jp`39  
* @since 2006-2-2 'gD,H X  
* @version 1.0 %@q/OVnM  
*/  UZ*Yt  
public class InsertSort implements SortUtil.Sort{ J 7/)XS  
M= ]]kJ:I  
/* (non-Javadoc) g %ZKn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uo<iZ3J  
*/ kO)+%'L!8  
public void sort(int[] data) { Hyn*O)q!  
int temp; ",O}{z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g %e"KnU  
} ^7p>p8  
} ?7eD< |  
} <T^:`p/]4  
RJ63"F $  
} 9im<J'  
!et[Rdbu  
冒泡排序: `@tn Eg  
#P,C9OQD  
package org.rut.util.algorithm.support; Q($.s=&l;  
cD5^mxd%  
import org.rut.util.algorithm.SortUtil; 9)~Ha iVB  
Cju%CE3a  
/** #q-7#pp  
* @author treeroot uG:xd0X+W  
* @since 2006-2-2 cs\/6gSCo  
* @version 1.0 p$+.]  
*/ n7$2 1*,  
public class BubbleSort implements SortUtil.Sort{ } N$soaUs  
97L|IZ s)  
/* (non-Javadoc) DtRu&>o_6D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J|gRG0O9Ya  
*/ O\z]1`i*o  
public void sort(int[] data) { `9>1 w d  
int temp; N5%Cwl6i  
for(int i=0;i for(int j=data.length-1;j>i;j--){ EWZ?q$  
if(data[j] SortUtil.swap(data,j,j-1); HuRq0/"  
} >vny9^_  
} EZw<)Q   
} $ KAOJc4<  
} B{dR/q3;@  
>`S $(f  
} h!4jl0 oX]  
g UAx8=h  
选择排序: i p"LoCE  
gOSFvH8FU  
package org.rut.util.algorithm.support; QGkMT +A  
(7k}ysc  
import org.rut.util.algorithm.SortUtil; mDB?;a>  
lij>u  
/** !$1'q~sO  
* @author treeroot EW}7T3g  
* @since 2006-2-2 -w3KBlo  
* @version 1.0 lq[o2\  
*/ Yfa`}hQ  
public class SelectionSort implements SortUtil.Sort { \YN(rD-  
W81 dLeTZg  
/* UifuRmn  
* (non-Javadoc) xJemc3]2  
* U1,f$McZs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u}~jNV  
*/ 7{fOo%(7  
public void sort(int[] data) { ]A%S&q  
int temp; AJWV#J%nB  
for (int i = 0; i < data.length; i++) { ]@G$ L,3  
int lowIndex = i; a"Q>K7K  
for (int j = data.length - 1; j > i; j--) { =j&qat  
if (data[j] < data[lowIndex]) { 8+=-!": ]  
lowIndex = j; >r8$vQGj  
} K'tckJ#%  
} qbZY[Q+F  
SortUtil.swap(data,i,lowIndex); |u5Xi5q.f  
} 9~Ve}NB#z&  
} LF?MO1!M  
x4 .Y&Wq#  
} ;"T,3JQPn6  
1:Dm, d;  
Shell排序: Of?3|I3 l  
Uk0Fo(HY  
package org.rut.util.algorithm.support; c'Mi9,q  
QgB%\mO=  
import org.rut.util.algorithm.SortUtil; \7elqX`.yY  
x+;"(]#  
/** 2nsW)bd  
* @author treeroot  ~d\>f  
* @since 2006-2-2 4Y!_tZ>  
* @version 1.0 c!20(( 2|I  
*/ uu`G<n  
public class ShellSort implements SortUtil.Sort{ V 'e _gH  
PEIf)**0N  
/* (non-Javadoc) _G1C5nkDl4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hOH DXc"  
*/ ZBcT@hxm  
public void sort(int[] data) { Bq 9 Eu1  
for(int i=data.length/2;i>2;i/=2){ j$Unw  
for(int j=0;j insertSort(data,j,i); _`LQnRp(  
} \ W.uV[\  
} blHJhB&8  
insertSort(data,0,1); i<>zN^zn  
} } 0^wJs  
\&#pJBBG  
/** l$mfsm|{:  
* @param data w>6~ zAh  
* @param j =Ti[Q5SZ  
* @param i !hS~\+E  
*/ sn=_-uoU  
private void insertSort(int[] data, int start, int inc) { PY{])z3N  
int temp; =U)e_q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); h|Os T  
} f.X<Mo   
} W]l&mr  
} B+Ox#[<75  
i *9Bu;  
} NL7CeHs5  
~wl 4  
快速排序: yWkg4  
 p;k7\7  
package org.rut.util.algorithm.support; co-dq\P  
@GrQ /F7  
import org.rut.util.algorithm.SortUtil; g[ dI%  
<f+ 9wuZ  
/** !caY  
* @author treeroot ?r"QJa>  
* @since 2006-2-2 vD@ =V#T  
* @version 1.0 C!%\cy%Xj  
*/ } 63Qh}_Y  
public class QuickSort implements SortUtil.Sort{ 0S}ogU[k  
b!hs|emo;  
/* (non-Javadoc) zFpM\{`[g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /6@~XO) w  
*/ $ &III  
public void sort(int[] data) { d} {d5-_a  
quickSort(data,0,data.length-1); |2'u@<(Z/  
} sH_5.+,`  
private void quickSort(int[] data,int i,int j){ 5l]G1+  
int pivotIndex=(i+j)/2; gZ b +m  
file://swap Y(D&JKx  
SortUtil.swap(data,pivotIndex,j); Iq%f*Zm<  
TcjTF|q>  
int k=partition(data,i-1,j,data[j]); l%^VBv> 2  
SortUtil.swap(data,k,j); 3LK]VuZE  
if((k-i)>1) quickSort(data,i,k-1); oMNgyAp^  
if((j-k)>1) quickSort(data,k+1,j); |gP9^B?3  
dY6A)[dAH'  
} pA|Z%aL  
/** 4x;vn8 yh  
* @param data 9f/RD?(1O  
* @param i H,I k&{@j  
* @param j %DqPRl.Gu  
* @return RD1N@sHDKc  
*/ d@u)'AY%/  
private int partition(int[] data, int l, int r,int pivot) { : U:>X6f  
do{ 7=e!k-G  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); tn@MOOP l  
SortUtil.swap(data,l,r); %n7mN])  
} vsDR@Y}k  
while(l SortUtil.swap(data,l,r); N%:)MT,&g  
return l; V_.n G;  
} y;1 'hP&  
'tRaF  
} LEJ8 .z6$  
&t0toEj  
改进后的快速排序: T+9#&  
:j=/>d],%  
package org.rut.util.algorithm.support; E,fG<X{  
#4Z]/D2G  
import org.rut.util.algorithm.SortUtil; 6gSo>F4=  
%M/rpEE"b%  
/** O5;$cP:  
* @author treeroot NjL^FqA[  
* @since 2006-2-2 afJ`1l  
* @version 1.0 beN(7jo  
*/ NDt +m  
public class ImprovedQuickSort implements SortUtil.Sort { ecjjCt2S  
5qx,b&^w  
private static int MAX_STACK_SIZE=4096; 8T2iqqG/1  
private static int THRESHOLD=10; Q:/BC= ~  
/* (non-Javadoc) S9'8rn!_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5/m^9@A  
*/ l_`DQ8L`  
public void sort(int[] data) { k OycS  
int[] stack=new int[MAX_STACK_SIZE]; 9*"Ae0ok1  
9)Jc'd|  
int top=-1; oK!W<#  
int pivot; |D ?}6z  
int pivotIndex,l,r; 'W>Zr}:  
GdxMHnn=  
stack[++top]=0; 2d`:lk%\  
stack[++top]=data.length-1; f Cq  
Tn'_{@E;  
while(top>0){ $Bd13%>)  
int j=stack[top--]; N0:gY]o%  
int i=stack[top--]; <o\2-fWvY  
qg(rG5kD@  
pivotIndex=(i+j)/2; ~sd+ch*  
pivot=data[pivotIndex]; tk"+PTGJT  
&$!'Cw`,  
SortUtil.swap(data,pivotIndex,j); ~PoBvHi  
n<. T6  
file://partition %S2^i3  
l=i-1; JMnk~8O  
r=j; iyRB}[y  
do{ "HuV'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .7!n%Ks  
SortUtil.swap(data,l,r); vw'`t6  
} gx*rxid  
while(l SortUtil.swap(data,l,r); 7:Jyu/*]  
SortUtil.swap(data,l,j); J:{$\m'  
T vEN0RV2  
if((l-i)>THRESHOLD){ /Ww_fY  
stack[++top]=i; q $Hg\ {c  
stack[++top]=l-1; /p=9"?  
} xKKR'v:o\  
if((j-l)>THRESHOLD){ 2(, `9  
stack[++top]=l+1; _Gpq=(q)  
stack[++top]=j; (Oc[j{6q  
} i&r56m<  
1D,$Az~.  
} ed,w-;(n~  
file://new InsertSort().sort(data); &*}NN5Sv  
insertSort(data); NW.<v /?=,  
} q;))3aQe  
/** UeG$lMV  
* @param data Bh9O<|E  
*/ {|}tp<:2  
private void insertSort(int[] data) { 'wo[iNy[  
int temp; Z=ayVsJ3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nt/+?Sj  
} _.xT :b36  
} I 9yN TD  
} AnbY<&OC1  
6\MJvg\;  
} Ek [V A\G  
`ym@ U(;N  
归并排序: C-;y#a)  
4T-9F  
package org.rut.util.algorithm.support; 2V}tDN7c  
O IF0X!  
import org.rut.util.algorithm.SortUtil; ;;zKHS  
Lx-ofN\  
/** }w \["r  
* @author treeroot E^.y$d~dS  
* @since 2006-2-2 't$(Ruw  
* @version 1.0 f\Bd lOJ>  
*/ Md \yXp  
public class MergeSort implements SortUtil.Sort{ UFxQ-GV4  
tylMJ$ 9*.  
/* (non-Javadoc) {Gnji] v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,3G8afo  
*/ KzeTf?G  
public void sort(int[] data) { DWB.dP *8  
int[] temp=new int[data.length]; >EFjyhVE  
mergeSort(data,temp,0,data.length-1); JM5 w`=  
} h1.]Nl C  
vUGEzCM  
private void mergeSort(int[] data,int[] temp,int l,int r){ pYo]lO  
int mid=(l+r)/2; =J0X{Ovn4z  
if(l==r) return ; `A@{})+  
mergeSort(data,temp,l,mid); +/60$60[z  
mergeSort(data,temp,mid+1,r); O:fv1  
for(int i=l;i<=r;i++){ tBgB>-h(  
temp=data; ;z;O}<8s  
} hKw4[wB]  
int i1=l; \ajy%$;$}  
int i2=mid+1; ^Bw2y&nN  
for(int cur=l;cur<=r;cur++){ \|Pp%U [  
if(i1==mid+1) =6b^j]1  
data[cur]=temp[i2++]; etdI:N*x  
else if(i2>r) gc-yUH0I  
data[cur]=temp[i1++]; "d'D:>z]%  
else if(temp[i1] data[cur]=temp[i1++]; WL4{_X  
else :ND5po#(  
data[cur]=temp[i2++]; 7aVQp3<  
} =Mb!&qq  
} 1u&}Lq(  
*.wX9g9\  
} YaJ[39V  
q3\ YL?  
改进后的归并排序: q/,>UtRr  
NF <|3|  
package org.rut.util.algorithm.support; y^:!]-+  
G2Eke;  
import org.rut.util.algorithm.SortUtil; [mKPOg-t  
!6: kJL}U  
/** E(Tvj\9  
* @author treeroot oJJ2y  
* @since 2006-2-2 )(`I1"1   
* @version 1.0 O,"4HZG  
*/ He att?(RR  
public class ImprovedMergeSort implements SortUtil.Sort { I/D (gY06<  
v'(p."g  
private static final int THRESHOLD = 10; T!C39T  
Y.&nxT95=  
/* UN'[sHjOnD  
* (non-Javadoc) hnag <=  
* xMNUy B{?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rf_(pp)  
*/ H'E(gc)>)  
public void sort(int[] data) { x5_V5A/@LU  
int[] temp=new int[data.length]; .}Va~[0j  
mergeSort(data,temp,0,data.length-1); `,|"rn#S  
} ssGp:{]v/  
Q$!dPwDg  
private void mergeSort(int[] data, int[] temp, int l, int r) { SoX\S|}%6[  
int i, j, k; EYNi`  
int mid = (l + r) / 2; z97RNT|Y7U  
if (l == r) UfcQFT{()  
return; ^$-ID6  
if ((mid - l) >= THRESHOLD) rEEoR'c6  
mergeSort(data, temp, l, mid); gE$D#PZa  
else rw(EI,G  
insertSort(data, l, mid - l + 1); LUSBRr8  
if ((r - mid) > THRESHOLD) KITC,@xE_O  
mergeSort(data, temp, mid + 1, r); Q!7il<S  
else W]b>k lp;  
insertSort(data, mid + 1, r - mid); J?VMQTa/+  
v4c*6(m  
for (i = l; i <= mid; i++) { F uYjrzmx  
temp = data; KQGdV{VFs  
} aQzDOeTi  
for (j = 1; j <= r - mid; j++) { V0 70oZ  
temp[r - j + 1] = data[j + mid]; LsB|}_j7  
} ]\DZW4?'  
int a = temp[l]; f@Oi$9CZn  
int b = temp[r]; Msj(>U&}+  
for (i = l, j = r, k = l; k <= r; k++) { E6+c{41B  
if (a < b) { /G*]3=cSe  
data[k] = temp[i++]; 8SH&b8k<<  
a = temp; *?Hc8y-dG,  
} else { b ]A9$-  
data[k] = temp[j--]; Lg6;FbY?  
b = temp[j]; ->"Z1  
} w)xiiO[  
} #6okd*^  
} T$ w`=7  
'0ks`a4q  
/** )>-94xx|  
* @param data !q]@/<=  
* @param l rnNB!T   
* @param i AN)exU ?  
*/ +"P!es\q  
private void insertSort(int[] data, int start, int len) { Ht`kmk;I)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ULT,>S6r  
} Lp1\vfU<+  
} ( AI gW  
} zDK"Y{  
} QVT|6znw  
Pi/V3D) B  
堆排序: qS|ns'[  
v?6g. [;?  
package org.rut.util.algorithm.support; /&>vhpZ}  
bf4QW JZD  
import org.rut.util.algorithm.SortUtil; p)&Yr  
hiT&QJB` _  
/** Xzn}gH]  
* @author treeroot 1\u{1 V  
* @since 2006-2-2 DH IC:6EY  
* @version 1.0 V'iT>  
*/ h85 kQ^%  
public class HeapSort implements SortUtil.Sort{ /^M|$JRI  
qT153dNA&  
/* (non-Javadoc) pB;8yz=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kry^ 47"  
*/ |#i|BVnoE  
public void sort(int[] data) { ;0"p)O@s04  
MaxHeap h=new MaxHeap(); Bx" eX>A8  
h.init(data); :P/0"  
for(int i=0;i h.remove(); DnP "7}v  
System.arraycopy(h.queue,1,data,0,data.length); ;${_eab ]  
} ehTRw8"R  
qK-\`m  
private static class MaxHeap{ \c(Z?`p]R1  
wAA9M4  
void init(int[] data){ LW#$%}  
this.queue=new int[data.length+1]; <FofRFaS  
for(int i=0;i queue[++size]=data; =6O<1<[y  
fixUp(size); a<CJ#B2K  
} /w/um>>K.  
} k [eWhdSw  
?#0m[k&`  
private int size=0; q]\GBRp  
5sZqX.XVF  
private int[] queue; BenUyv1d  
N@x5h8  
public int get() { /cC4K\M  
return queue[1]; ozUsp[W>  
} c2~oPUj  
XCyAt;neon  
public void remove() { I7]qTS[vg  
SortUtil.swap(queue,1,size--); P ~rTuj  
fixDown(1); Q&`if O  
} p%#=OtkC  
file://fixdown m#|h22^H  
private void fixDown(int k) { z/P^Bx]r  
int j; Wagb|B\  
while ((j = k << 1) <= size) { =2OLyZDI  
if (j < size %26amp;%26amp; queue[j] j++; J/>9w  
if (queue[k]>queue[j]) file://不用交换 $*qQ/hi  
break; ojbms>a  
SortUtil.swap(queue,j,k); |y DaFv  
k = j; W%P$$x5&  
} P;V5f8r?  
} F x3X  
private void fixUp(int k) { k`=&m"&#  
while (k > 1) { XF i!=|F  
int j = k >> 1; PL*1-t?#  
if (queue[j]>queue[k]) |0$7{nQ  
break; |'!9mvt=  
SortUtil.swap(queue,j,k); hOR1R B  
k = j; u,`cmyZ  
} ftRzgW);  
} V7)<MY  
il~A(`+YO  
} 4YyVh.x  
;dqu ld+q  
} TFI$>Oz|  
rOTxD/  
SortUtil: [;$9s=:[  
V]6CHE:BS  
package org.rut.util.algorithm; 6g 5Lf)yG  
4|/=]w  
import org.rut.util.algorithm.support.BubbleSort; k{E!X  
import org.rut.util.algorithm.support.HeapSort; c;doxNd6  
import org.rut.util.algorithm.support.ImprovedMergeSort; qrkJ:  
import org.rut.util.algorithm.support.ImprovedQuickSort; SGUZ'}  
import org.rut.util.algorithm.support.InsertSort; 1+9}Xnxb  
import org.rut.util.algorithm.support.MergeSort; x.ucsb  
import org.rut.util.algorithm.support.QuickSort; 5uO.@0  
import org.rut.util.algorithm.support.SelectionSort; VskdC?yIp  
import org.rut.util.algorithm.support.ShellSort; 3}nkTZG  
H&=fD` Xq  
/** XG8UdR|  
* @author treeroot sG:tyvln  
* @since 2006-2-2 0xzS9  
* @version 1.0 }HxC ~J"  
*/ [KNA5(Y0  
public class SortUtil { n7iIY4gZ  
public final static int INSERT = 1; IZ&FNOSZ+4  
public final static int BUBBLE = 2; 18AlQ+')?w  
public final static int SELECTION = 3; P*3PDa@  
public final static int SHELL = 4; i ?]`9z  
public final static int QUICK = 5; 4N_iHe5U  
public final static int IMPROVED_QUICK = 6; )5Ofr-Y  
public final static int MERGE = 7; =m/BH^|&W  
public final static int IMPROVED_MERGE = 8; 2A(IsUtqO:  
public final static int HEAP = 9; hs?cV)hDS  
KpfQ=~'  
public static void sort(int[] data) { L /V;;  
sort(data, IMPROVED_QUICK); OHK]=DH:M  
} ;[!W*8.c  
private static String[] name={ >m4HCs>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" f#| wb~  
}; O[\obi"}  
]udH`{]  
private static Sort[] impl=new Sort[]{ j[Oh>yG  
new InsertSort(), lj"72   
new BubbleSort(), ` l}+BI`4  
new SelectionSort(), Hi#f Qji  
new ShellSort(), QO <.l`F  
new QuickSort(), p[:E$#W~;  
new ImprovedQuickSort(), uM@ve(8\  
new MergeSort(), mE"},ksg  
new ImprovedMergeSort(), BiD}C  
new HeapSort() 0` UrB:  
}; TmUN@h  
}D*5PV%d  
public static String toString(int algorithm){  :qrCqFl  
return name[algorithm-1]; MznMt2-u  
} zi= gOm  
>;Vy{bL8  
public static void sort(int[] data, int algorithm) { %617f=(E?!  
impl[algorithm-1].sort(data); |5#iPw_wMY  
} (VB-5&b  
qL/XGIxL?  
public static interface Sort { o 76QQ+hP  
public void sort(int[] data); #ByrX\  
} IT0 [;eqR  
q+cx.Rc#  
public static void swap(int[] data, int i, int j) { b";D*\=x  
int temp = data; B'~CFj0W%=  
data = data[j]; /6nj 4.xxc  
data[j] = temp; g: ,*Y^T  
} ;}QM#5Xdt  
} } DQ KfS  
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