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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。 H6/C7  
插入排序: <Z58"dg.5  
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package org.rut.util.algorithm.support; <|R`N)AV;  
fjwUh>[ }  
import org.rut.util.algorithm.SortUtil; "+GKU)  
/** .GH#`j  
* @author treeroot W\l"_^d*  
* @since 2006-2-2 Z9vJF.clO  
* @version 1.0 $(JB"%S8c  
*/ ,a1 1&"xl  
public class InsertSort implements SortUtil.Sort{ `-QY<STTP9  
]v6s](CE  
/* (non-Javadoc) A:5B6Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) * M,'F^E2  
*/ 9]^ CDL  
public void sort(int[] data) { Rd^X.  
int temp; cc_v4d{x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NwB;9ZhZ  
} 0CFON2I  
} EXD Qr'"  
} %L;;W,l$`)  
byB ESyV!O  
} i$b Het  
yYri.n  
冒泡排序:  q{*4BL'  
g (:%E  
package org.rut.util.algorithm.support; L4?)N&V  
NP_b~e6O=  
import org.rut.util.algorithm.SortUtil; _}RzJKl@  
*4oj' }  
/** '"QN{ja  
* @author treeroot ~|t 7  
* @since 2006-2-2 <~}# Q,9  
* @version 1.0 h%yw'?s  
*/ X5`#da  
public class BubbleSort implements SortUtil.Sort{ :2_8.+:  
c 6"hk_  
/* (non-Javadoc) 6}aH>(3!A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5l ioL)  
*/ 7g a|4j3%  
public void sort(int[] data) { j9XRC9   
int temp; S_EN,2'e  
for(int i=0;i for(int j=data.length-1;j>i;j--){ qh<h|C]V  
if(data[j] SortUtil.swap(data,j,j-1); 0-!K@#$>=  
} /18VQ  
} ` e~nn  
} gBZ1Weu-'  
} bw\a\/Dw  
4?s ~S. %  
} {vL4:K  
6JYVC>i  
选择排序: TDtS^(2A7K  
B-`,h pp  
package org.rut.util.algorithm.support; A^9RGz4=  
yS)73s/MrY  
import org.rut.util.algorithm.SortUtil; @! gJOy  
OE4hG xG  
/** <,S5(pZ  
* @author treeroot X$<s@_#1  
* @since 2006-2-2 OE=]/([  
* @version 1.0 NWt`X!  
*/ ",hPy[k  
public class SelectionSort implements SortUtil.Sort { WHM|kt  
uIO<6p)  
/* k{ru< cf  
* (non-Javadoc) ^lp#j;Df  
* v9t26>{~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3wQUNv0z  
*/ !&n'1gJ)kd  
public void sort(int[] data) { yG`J3++ S  
int temp; R zOs,  
for (int i = 0; i < data.length; i++) { P&s-U6  
int lowIndex = i; aU)NbESu  
for (int j = data.length - 1; j > i; j--) { ])sIQ{P  
if (data[j] < data[lowIndex]) { #9a\Ab  
lowIndex = j; :=iP_*#  
} d\_$Nb*  
} )M!6y%b67  
SortUtil.swap(data,i,lowIndex); K9*vWoP'  
} [K\Vc9  
} {-T}"WHg7  
oVK3=m@ {  
} #'@pL0dj  
DhVF^=x$  
Shell排序: IYo{eX~=  
]f3eiHg*  
package org.rut.util.algorithm.support; +p%!G1Yz  
!Rq.L  
import org.rut.util.algorithm.SortUtil; r? w^#V  
8K]5fkC|  
/** 'K L" i  
* @author treeroot $mV1K)ege  
* @since 2006-2-2 5 +Ei! E89  
* @version 1.0 s?:&#  
*/ :oYz=c  
public class ShellSort implements SortUtil.Sort{ EU@ BNja  
w=ib@_:f  
/* (non-Javadoc) _DlX F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a+U^mPe  
*/ T ke3X\|  
public void sort(int[] data) { <K(qv^C  
for(int i=data.length/2;i>2;i/=2){ iB]xYfQ&@V  
for(int j=0;j insertSort(data,j,i); -|"[S"e  
} Q1A_hW2x  
} Hd/|f;  
insertSort(data,0,1); `Mh 3v@K:  
} J@Qt(rRxi  
j.?c~Fh  
/** ,v#F6xv8  
* @param data H'Oy._,]t  
* @param j xzZ2?z Wi  
* @param i R;G"LT  
*/ o#D;H[' A  
private void insertSort(int[] data, int start, int inc) { _+OnH!G0  
int temp; y.xyr"-Q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %OIJ.  
} am'11a@*  
} r+0<A.''a  
} .+@;gVZx1  
u . xUM  
} \6{w#HsP8  
(R9{wGV [  
快速排序: /:+f5\"-b  
ccdP}|9e  
package org.rut.util.algorithm.support; 2`Ojw_$W7  
}MCh$  
import org.rut.util.algorithm.SortUtil; ]g3RVA%\l  
U '$W$()p  
/** '4"9f]:  
* @author treeroot u!B6';XY  
* @since 2006-2-2 (}#8$ )  
* @version 1.0 As y&X  
*/ ma gZmY~  
public class QuickSort implements SortUtil.Sort{ Q[wTV3d  
MXsCm(  
/* (non-Javadoc) _K4E6c_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zc`gm~@  
*/ or8`.h EHI  
public void sort(int[] data) { KkIgyLM  
quickSort(data,0,data.length-1); YUGEGXw  
} +n)_\@aQ  
private void quickSort(int[] data,int i,int j){ a7? )x])e  
int pivotIndex=(i+j)/2;  v<_wf  
file://swap '1 }ybSG  
SortUtil.swap(data,pivotIndex,j); nB &[R  
2m*g,J?ql  
int k=partition(data,i-1,j,data[j]); '#oNOU  
SortUtil.swap(data,k,j); pkKcTY1Fx  
if((k-i)>1) quickSort(data,i,k-1); #B^A"?*S  
if((j-k)>1) quickSort(data,k+1,j); <\fB+ AZ  
[Zpx :r}  
} TdCC,/c 3  
/** dPm_jX  
* @param data TpSv7kT]  
* @param i wAvnj  
* @param j $!ATj`}kb  
* @return C9FzTg/c  
*/ -_KO}_  
private int partition(int[] data, int l, int r,int pivot) { 9K6G%  
do{ u^ 3,~:E  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {tDH !sX  
SortUtil.swap(data,l,r); &*JU N}86  
} yU{Q`6u T  
while(l SortUtil.swap(data,l,r); C]bre^q  
return l; [Nw%fuB  
} TpH-_ft  
1zP)~p3a  
} fN!lXPgM  
H5)8TR3La  
改进后的快速排序: yP^C)  
*De}3-e1b  
package org.rut.util.algorithm.support; e a3f`z  
Ds<~JfVl  
import org.rut.util.algorithm.SortUtil; ?nCo?A  
itn<c2UyA  
/** ]F#}8$  
* @author treeroot iU/v; T(  
* @since 2006-2-2 GD -cP5$  
* @version 1.0 !SPu9:  
*/ 4/?@ %  
public class ImprovedQuickSort implements SortUtil.Sort { EZee kxs  
|6O7_U#q  
private static int MAX_STACK_SIZE=4096; >At* jg48  
private static int THRESHOLD=10; b9Mp@I7Q-  
/* (non-Javadoc) )#Le"&D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $l=&  
*/ N!~5S`  
public void sort(int[] data) { dZ,IXA yB  
int[] stack=new int[MAX_STACK_SIZE]; f6])M)  
d2U+%%Tdw  
int top=-1; }`uFLBG3  
int pivot; s|[CvjL#0  
int pivotIndex,l,r; eD,'M  
)C>8B`^S  
stack[++top]=0; BA6(Owb  
stack[++top]=data.length-1; %5 ovW<E:  
X8\UTHT& 0  
while(top>0){ d^+0=_[PmK  
int j=stack[top--]; EpCF/i?9:  
int i=stack[top--]; \&MJ(F>vJ  
=1+/`w  
pivotIndex=(i+j)/2; ]R*h3U@5#K  
pivot=data[pivotIndex]; i?:#lbw_  
zhgvqg-  
SortUtil.swap(data,pivotIndex,j); AaLbJYuKd  
k!"6mo@rd  
file://partition yXT.]%)  
l=i-1; JI[{n~bhGD  
r=j; D%*Ryg  
do{ _A~>?gJ;,  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); f=IF_|@^S  
SortUtil.swap(data,l,r); Y3JIDT^  
} ?3y>K!D(A  
while(l SortUtil.swap(data,l,r); gx.\&W b  
SortUtil.swap(data,l,j); Vtv~jJ{m  
KP)t,\@f!  
if((l-i)>THRESHOLD){ s=>^ 8[0O  
stack[++top]=i; va2FgW`Bd+  
stack[++top]=l-1; :{s0tw>Z  
} fb[? sc  
if((j-l)>THRESHOLD){ 6F_:,b^  
stack[++top]=l+1; M=54xTh0Y  
stack[++top]=j; :;jRAjq"  
} :7?n)=Tx  
3Mq%3jX  
} Z#%s/TL  
file://new InsertSort().sort(data); =9;b|Y"aQ  
insertSort(data); >eWORf>7  
} .cz7jD  
/** &ZL4/e  
* @param data uT>"(wnJ|  
*/ |j4p  
private void insertSort(int[] data) { Dxe]LES\]  
int temp; <m,bP c :R  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SB`xr!~A]  
} 2^qJ'<2]M  
} @<yYMo7  
} deEc;IAo  
uFuP%f!yY  
} PPde!}T$  
q ,+29  
归并排序: C@g/{?\  
'Hsd7Dpi}  
package org.rut.util.algorithm.support; MeYu  
IP^1ca#<  
import org.rut.util.algorithm.SortUtil; P('bnDU  
DiskGq@T  
/** <Ira~N  
* @author treeroot 8Vy/n^3)  
* @since 2006-2-2 p*l=rni4  
* @version 1.0 I%{ 1K+V/  
*/ })j N 8px  
public class MergeSort implements SortUtil.Sort{ OVE?;x>n/1  
!DD4Bqez  
/* (non-Javadoc) Rq`5ff3,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (+}44Ldt  
*/ /4}y2JVv)  
public void sort(int[] data) { 8@ f+?g*i  
int[] temp=new int[data.length]; j8%Y[:~D  
mergeSort(data,temp,0,data.length-1); R[rOzoNp0  
} -;Te+E_  
sq@c?!'  
private void mergeSort(int[] data,int[] temp,int l,int r){ Y?-Ef sK  
int mid=(l+r)/2; TPLv]$n  
if(l==r) return ; 1@9M[_<n5  
mergeSort(data,temp,l,mid); 53?Ati\Y)  
mergeSort(data,temp,mid+1,r); CdMV(  
for(int i=l;i<=r;i++){ |E;+j\   
temp=data; t^2$ent  
} RY1-Zjlb<  
int i1=l; |{RCvm  
int i2=mid+1; m}f{o  
for(int cur=l;cur<=r;cur++){ KL*+gq0k  
if(i1==mid+1) cM\BEh h  
data[cur]=temp[i2++]; $LG.rJ/*  
else if(i2>r) p.H`lbVY  
data[cur]=temp[i1++]; e7tio!  
else if(temp[i1] data[cur]=temp[i1++]; 9i D&y)$"  
else kh8 M=  
data[cur]=temp[i2++]; a-AA$U9hj  
} _#uRKy<`N  
} .EvP%A m  
,1]VY/  
} =dmxE*C  
'v=BAY=Ef  
改进后的归并排序: GIfs]zVr`  
J% ZM V  
package org.rut.util.algorithm.support; Vy^mEsQC+h  
mX, @yCI  
import org.rut.util.algorithm.SortUtil; K92M9=>  
d,Oe3?][0p  
/** kWs:7jiiu  
* @author treeroot +n)bWB%  
* @since 2006-2-2 ad9u;uS  
* @version 1.0 b@sq}8YD|z  
*/ i[w&!mn%  
public class ImprovedMergeSort implements SortUtil.Sort { ;iJ}[HUo  
{hm-0Q  
private static final int THRESHOLD = 10; $Rn9*OKr  
C4t~k  
/* b,'rz04^  
* (non-Javadoc) ;yCtk ~T%  
* 1_StgFu u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aC<fzUD;  
*/ )Y"t$Iw"  
public void sort(int[] data) { s?fEorG  
int[] temp=new int[data.length]; 1v<uA9A%[  
mergeSort(data,temp,0,data.length-1); AgB$ w4  
} KXUJ*l-5  
Q8]S6,pt  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4{b/Nv:b  
int i, j, k; }:1qK67S  
int mid = (l + r) / 2; ;<%d^   
if (l == r) xsrdHP1  
return; \lyHQ-gWhc  
if ((mid - l) >= THRESHOLD) g91xUG  
mergeSort(data, temp, l, mid); q^~w:$^ U  
else 'C;KNc  
insertSort(data, l, mid - l + 1); RER93:(  
if ((r - mid) > THRESHOLD) qQS&K%F  
mergeSort(data, temp, mid + 1, r); FY]Et= p  
else Hl8\*#;C&>  
insertSort(data, mid + 1, r - mid); u!b0 <E  
MW=rX>tE  
for (i = l; i <= mid; i++) { "L9pFz</  
temp = data; 6c}nP[6|  
} Wck WX]};S  
for (j = 1; j <= r - mid; j++) { :z$+leNH\  
temp[r - j + 1] = data[j + mid]; 6']WOM#  
} -NDB.~E^DJ  
int a = temp[l]; q@Zeu\T,*#  
int b = temp[r]; uiWo<}t}{  
for (i = l, j = r, k = l; k <= r; k++) { lvUWs  
if (a < b) { |8{ \j*3  
data[k] = temp[i++]; |1T[P)Q  
a = temp; ;3Q3!+%j  
} else { 9v7}[`^  
data[k] = temp[j--]; @^HZTuP2;  
b = temp[j]; ^n\g,  
} c2d1'l]n  
} qf%p#+:B3  
} .;&4'ga4  
}IKU^0M9<T  
/** yQC8Gt8  
* @param data E FBvi  
* @param l t<+gyAW  
* @param i <h`}I3Ao  
*/ (T",6xBSG  
private void insertSort(int[] data, int start, int len) { x0xQFlGk  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yeV|j\TJI.  
} SqoO"(1x  
} c2yZvi  
} IY|>'}UU#  
} ~vfPsaRh  
=8 DS~J{  
堆排序: OL623jQX  
1c$c e+n~  
package org.rut.util.algorithm.support; 1*B'o<?P1  
H7Pw>Ta ;  
import org.rut.util.algorithm.SortUtil; ;GZ'Rb  
.3xf!E*  
/** s18A  
* @author treeroot 8ZDWaq8^2N  
* @since 2006-2-2 et`rPK~m  
* @version 1.0 ,*;g+[Bhpl  
*/ a,[NcdG  
public class HeapSort implements SortUtil.Sort{ H(Ad"1~.#  
CrX1qyR  
/* (non-Javadoc) ABhQ7 x|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -4S4I  
*/ !Ee&e~"  
public void sort(int[] data) { [uu<aRAg3O  
MaxHeap h=new MaxHeap(); ZZW%6-B  
h.init(data); iM{cr&0  
for(int i=0;i h.remove(); kfy|3KA3m  
System.arraycopy(h.queue,1,data,0,data.length); ?O/!pUAu  
} .Kk'N  
"%+9p6/  
private static class MaxHeap{ ?;p45y~n%  
M V~3~h8  
void init(int[] data){ 'zYx4&s  
this.queue=new int[data.length+1]; 6am<V]Hw0F  
for(int i=0;i queue[++size]=data; 8' +I8J0l  
fixUp(size); $eh>.c'&]  
} uq@_DPA7  
} < #7j~<  
qLm g18  
private int size=0; O)}5`0@L  
@86I|cY  
private int[] queue; Yf x'7gj  
THnZbh4#)  
public int get() { W/<C$T4  
return queue[1]; 4G=KyRKh  
} DX8pd5 U  
+rOd0?  
public void remove() { hdxq@%Vs  
SortUtil.swap(queue,1,size--); -2*Pm1\Z  
fixDown(1); >66v+  
} SR { KL#NC  
file://fixdown Z`kI6  
private void fixDown(int k) { $U}GX'1LZ  
int j; <qCfw>%2F  
while ((j = k << 1) <= size) { ~ ^) 4*@i6  
if (j < size %26amp;%26amp; queue[j] j++; z4*`K4W  
if (queue[k]>queue[j]) file://不用交换 P:v|JER   
break; g2GHsVS  
SortUtil.swap(queue,j,k); 2k"!o~s^  
k = j; NEX{vZkgw  
} @# &y  
} ,$; pLjo6  
private void fixUp(int k) { kY`L[1G$  
while (k > 1) { i 9wk)  
int j = k >> 1; WhN~R[LE_  
if (queue[j]>queue[k]) Fs;_z9ej-u  
break; hZLwg7X!   
SortUtil.swap(queue,j,k); :<>=,`vQD  
k = j; .wz.Jr`{  
} Ce_E S.  
} @j?)uJ0Q  
^jZ4tH3K  
} 8K0@*0  
P+[\9Gg  
}  K na  
V<G=pPC'H  
SortUtil: B]|"ePj-  
}o MY  
package org.rut.util.algorithm; ![4<6/2gy  
T_*R^Ukb5  
import org.rut.util.algorithm.support.BubbleSort; b)Dzau  
import org.rut.util.algorithm.support.HeapSort; nRlvW{p;  
import org.rut.util.algorithm.support.ImprovedMergeSort; !L_\6;aP,x  
import org.rut.util.algorithm.support.ImprovedQuickSort; l|p \8=  
import org.rut.util.algorithm.support.InsertSort; Kn+m9  
import org.rut.util.algorithm.support.MergeSort; >@9>bI+Q  
import org.rut.util.algorithm.support.QuickSort; cq \()uF'c  
import org.rut.util.algorithm.support.SelectionSort; XhEd9>#  
import org.rut.util.algorithm.support.ShellSort; 0413K_  
}qOj^pkJ  
/** n; fUwon  
* @author treeroot s j{i  
* @since 2006-2-2 WN%KA TA  
* @version 1.0 1JXa/f+  
*/ Z:(yX0U,[  
public class SortUtil { <"Cacf g  
public final static int INSERT = 1; (( D*kd"  
public final static int BUBBLE = 2; ">^O{X\  
public final static int SELECTION = 3; ApxGrCu  
public final static int SHELL = 4; amY\1quD|  
public final static int QUICK = 5; UBy< vwnU  
public final static int IMPROVED_QUICK = 6; T2^0Q9E?  
public final static int MERGE = 7; #- hYjE5  
public final static int IMPROVED_MERGE = 8; 6(uK5eD(!n  
public final static int HEAP = 9; U*s QYt<?g  
1JI\e6]I  
public static void sort(int[] data) { !$i*u-%4  
sort(data, IMPROVED_QUICK);  DlWnz-  
} w[S!U<9/  
private static String[] name={ 05cyWg9a  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" toCxY+"nbU  
}; xF4>D!T%8  
ub0uxvz  
private static Sort[] impl=new Sort[]{ ] _WB^  
new InsertSort(), ;Xw'WMb*=  
new BubbleSort(), <-1(G1v  
new SelectionSort(), ,c;u]  
new ShellSort(), RS>;$O_(M  
new QuickSort(), )d\u_m W^  
new ImprovedQuickSort(), z!r-g(^G  
new MergeSort(), Gw5j6  
new ImprovedMergeSort(), D~i m1h;>  
new HeapSort() "#a_--"k9  
}; :bhpYEUMx  
` 5.PPI\h2  
public static String toString(int algorithm){ d }"Dp  
return name[algorithm-1]; nK" XyZ&  
} ?x|8"*N  
!e}LB%zf  
public static void sort(int[] data, int algorithm) { H~IN<3ko  
impl[algorithm-1].sort(data); g0P^O@8  
} $~[k?D  
_djr>C=H"  
public static interface Sort { d3$&I==;:  
public void sort(int[] data); gdu8O!9)  
} j}2,|9ne  
]+SVQ|v0  
public static void swap(int[] data, int i, int j) { ){PL6|5x  
int temp = data; \UdHN=A&  
data = data[j]; 8e`'Ox_5a  
data[j] = temp; b0A*zQA_)  
} I?l%RdGW  
} L|7F%oR  
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