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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。 z#RuwB+  
插入排序: 7u|%^Ao6  
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package org.rut.util.algorithm.support; pD[pTMG@$  
bH,M,xIL2  
import org.rut.util.algorithm.SortUtil; -8/JP  
/** rfc|`*m}0  
* @author treeroot k1 RV'  
* @since 2006-2-2 /eb-'m  
* @version 1.0 ZB$NVY  
*/ pu#[pa  
public class InsertSort implements SortUtil.Sort{ HJ",Sle  
nn'Af,ko/  
/* (non-Javadoc) ~{$L9;x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I qx84  
*/ L/%Y#  
public void sort(int[] data) { |*ReqM|_C  
int temp; 3[.3dy7,Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); UG #X/%p  
} nSHNis  
} \WX@PfL  
} _CL{IY  
m d_g}N(C  
} me:iQ.g  
tJAnuhX  
冒泡排序: L?Cjo4xS  
WI{; #A  
package org.rut.util.algorithm.support; @<a|  
M|H 2kvl  
import org.rut.util.algorithm.SortUtil;  pr/'J!{^  
FllX za)  
/** cf\&No?-p  
* @author treeroot >MPa38  
* @since 2006-2-2 %0zS  
* @version 1.0 w{r8kH  
*/ lCHo+>\Z  
public class BubbleSort implements SortUtil.Sort{ ; [FLT:$  
e,"FnW  
/* (non-Javadoc) #"<?_fao~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c ;^A)_/  
*/ 9(Jy0]E~  
public void sort(int[] data) { 8jNOEM(0Y+  
int temp; C5MqwNX  
for(int i=0;i for(int j=data.length-1;j>i;j--){ *E7R(#,yC  
if(data[j] SortUtil.swap(data,j,j-1); Mt=R*M}D0  
} 86qcf"?E  
} /?U!y?t&@  
} %I0}4$  
} %/!+(7 D  
QAUykS8  
} 1mix+.d  
z37Z %^  
选择排序: e=L*&X  
\XDmK   
package org.rut.util.algorithm.support; h$/JGm5uDb  
H?{ MRe  
import org.rut.util.algorithm.SortUtil; a'A s  
QF&6?e06p0  
/** ]'UgZsJ  
* @author treeroot NNp}|a9  
* @since 2006-2-2 _#vGs:-x&  
* @version 1.0 wASX\D }  
*/ GFt1  
public class SelectionSort implements SortUtil.Sort { yquAr$L!  
]x_F{&6U8  
/* shzG Eb  
* (non-Javadoc) uJ 8x  
* D2]ZMDL.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }I'^./za  
*/ ?0) @jc=  
public void sort(int[] data) { CIy^`2wq  
int temp; =f `=@]  
for (int i = 0; i < data.length; i++) { u(Rk'7k  
int lowIndex = i; 2LZS|fB9o  
for (int j = data.length - 1; j > i; j--) { MQ9vPgh  
if (data[j] < data[lowIndex]) { gwq`_/d}  
lowIndex = j; D )gD<  
} #g{Mne  
} v2=/[E@  
SortUtil.swap(data,i,lowIndex); `x2,;h!:)N  
} & g$rrpTzv  
} >f%,`r  
JhH`uA&  
} x?=B\8m  
}AJ L,Q7q  
Shell排序: =y<0UU  
Gnv!]c&S>l  
package org.rut.util.algorithm.support; {$|/|*  
10O3Z9  
import org.rut.util.algorithm.SortUtil; 63C(Tp"  
GMe0;StT  
/** ll2Vk*xs  
* @author treeroot ZRP y~wy>  
* @since 2006-2-2 kC31$jMC3!  
* @version 1.0 H:{?3gk.P3  
*/ sZwZWD'  
public class ShellSort implements SortUtil.Sort{ yKlU6t&` G  
i7s\CY  
/* (non-Javadoc) .R\p[rv&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C=yD3mVz  
*/ uQ^hV%|"  
public void sort(int[] data) { H0+:XF\M  
for(int i=data.length/2;i>2;i/=2){ q0g1E Jar  
for(int j=0;j insertSort(data,j,i); k}s+ca!B  
} gsfhH0  
} `@MPkC y1  
insertSort(data,0,1); T5q-" W6\  
} 8,y{q9O  
m_$JWv\|\  
/** W #47Cz  
* @param data y+RRg[6|  
* @param j o$t &MST?i  
* @param i f B7ljg  
*/ k:mlt:  
private void insertSort(int[] data, int start, int inc) { 0-GKu d  
int temp; {(!)P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); kF?S 2(vH  
} 3>M.]w6{  
} }7Jp :.qk  
} >>j+LRf*  
#4N >d~  
} qw2)v*Fn  
XECikld>  
快速排序: s6/cL|Ex  
4]EvT=Ro  
package org.rut.util.algorithm.support; Rf?%Tv0\  
O{nC^`X  
import org.rut.util.algorithm.SortUtil; g}YToOs  
B*2{M  
/** >] -<uT_  
* @author treeroot p7$3`t 6u  
* @since 2006-2-2 )tvc/)&A}  
* @version 1.0 P8IRH#ED  
*/ 5Xj|:qz<(  
public class QuickSort implements SortUtil.Sort{ !?6.!2  
qsTq*G  
/* (non-Javadoc) oc:x&`j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $ hoYkA  
*/ ,6RQvw  
public void sort(int[] data) { =EWD |<  
quickSort(data,0,data.length-1); /cYk+c  
} F@EZ;[  
private void quickSort(int[] data,int i,int j){ GZS{&w!  
int pivotIndex=(i+j)/2; RyE_|]I62u  
file://swap ,8~dz  
SortUtil.swap(data,pivotIndex,j); ]`K[W&  
<ZV7|'^  
int k=partition(data,i-1,j,data[j]); WSS(Bm|B  
SortUtil.swap(data,k,j); ExQ--!AC=  
if((k-i)>1) quickSort(data,i,k-1); w~]} acP  
if((j-k)>1) quickSort(data,k+1,j); F=: c5z  
aX]y`  
} Lg b  
/** 1 0V+OIC  
* @param data C`pan /t  
* @param i =O,e97  
* @param j gkLr]zv  
* @return t:disL& !E  
*/ 6kC)\ uy  
private int partition(int[] data, int l, int r,int pivot) { [RW, {A  
do{ F=V oFmF@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [:BW+6  
SortUtil.swap(data,l,r); 0O_E\- =  
} 0$!.c~  
while(l SortUtil.swap(data,l,r); sv@}x[L  
return l; #|q;t   
} ,rXW`7!2  
bu;vpNa  
} u$\Tg3du2  
~O8] 3+U  
改进后的快速排序: >H8^0n)?  
|]I#CdO  
package org.rut.util.algorithm.support; >|(WS.n3C  
{8_:4`YZ  
import org.rut.util.algorithm.SortUtil; S~}$Ly@  
6B /Jp  
/** (Y&R0jt  
* @author treeroot 7@3M]5:3g  
* @since 2006-2-2 :3:)E  
* @version 1.0 WGluZhRuT3  
*/ E#m76]vkCU  
public class ImprovedQuickSort implements SortUtil.Sort { ]D?oQ$q7  
p<ry$=`  
private static int MAX_STACK_SIZE=4096; Y/#:)(&@  
private static int THRESHOLD=10; 2zwuvgiZ  
/* (non-Javadoc) XNy:0C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *%;6P5n%  
*/ H#_}^cGPR=  
public void sort(int[] data) { G6f %/m`  
int[] stack=new int[MAX_STACK_SIZE]; j^:b-:F  
A-}PpH~.Z  
int top=-1; +ESX.Vel  
int pivot; !:&2+%  
int pivotIndex,l,r; S`iM.;|`O  
@b4b{d5[  
stack[++top]=0; RiwEuY  
stack[++top]=data.length-1; `;R|V  
zjzqKdy}F  
while(top>0){ @:I \\S@bN  
int j=stack[top--]; 4+ykE:  
int i=stack[top--]; 9 <y/Wv  
Uzy ;#q  
pivotIndex=(i+j)/2; Z8N@e<!*~8  
pivot=data[pivotIndex]; lrM.RM96  
\z<ws&z3`$  
SortUtil.swap(data,pivotIndex,j); `W6:=H  
<#:Ebofsn  
file://partition _Jt_2o%G  
l=i-1; ]KfghRUH  
r=j; "87O4 #$  
do{ a>#d=.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (v9!g#  
SortUtil.swap(data,l,r); 9_I[o.q   
} o<9yaQ;  
while(l SortUtil.swap(data,l,r); Q5T(;u6  
SortUtil.swap(data,l,j); 94S .9A  
yOn H&Jj  
if((l-i)>THRESHOLD){ 5VCMpy  
stack[++top]=i; uMljH@xBc  
stack[++top]=l-1; 2y&_Z^kI?  
} UXXqE4x  
if((j-l)>THRESHOLD){ zEnC[~W  
stack[++top]=l+1; fq)Ohb  
stack[++top]=j; mg/C Ux  
} e/g<<f-  
Nn~tb2\vk  
} `HMligT  
file://new InsertSort().sort(data); Te{aB"B  
insertSort(data); ^R&_}bp  
} <T4 7kLI  
/** ZdJVs/33Vn  
* @param data yHV^a0e7EH  
*/ E` :ZH  
private void insertSort(int[] data) { !8H!Fj`|j  
int temp; 5x93+DkO\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); eUGm ns  
} HY@kw>I  
} 0jl:Yzo&\  
} OgzGkc@A  
;@h'Mb  
} 98"z0nI%  
sYW1T @  
归并排序: MZ >0K  
:~qtvs;{  
package org.rut.util.algorithm.support;  Y,<WX v  
f D]An<  
import org.rut.util.algorithm.SortUtil; ]DL> .<]d  
,Jw\3T1V  
/** giA~+m~fN  
* @author treeroot Z`0r]V`Ys  
* @since 2006-2-2 3\+[38 _  
* @version 1.0 S]#=ES'^/  
*/ ;'Z,[a  
public class MergeSort implements SortUtil.Sort{ O4'kS @  
?[*@T2Ck  
/* (non-Javadoc) Y'+F0IZ+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8xeun~e"vS  
*/ .3g\[p   
public void sort(int[] data) { GSUOMy[M-  
int[] temp=new int[data.length]; @ B}c4,  
mergeSort(data,temp,0,data.length-1); [|m>vY!  
} @h z0:ezg:  
_mI:Lr#dT  
private void mergeSort(int[] data,int[] temp,int l,int r){ *cb D&R\  
int mid=(l+r)/2; 8O;rp(N.n  
if(l==r) return ; }SJLBy0  
mergeSort(data,temp,l,mid); 80R= r  
mergeSort(data,temp,mid+1,r); +lXdRc`6  
for(int i=l;i<=r;i++){ qAuUe=w%p  
temp=data; s\3Z?zm8  
} ux/[d6To  
int i1=l; A+bu bH,  
int i2=mid+1; 2=Vkjh-  
for(int cur=l;cur<=r;cur++){ o#KPrW`XJ/  
if(i1==mid+1) 8m1 3M5r  
data[cur]=temp[i2++]; ?L ~=Z\H  
else if(i2>r) )=SYJ-ta<  
data[cur]=temp[i1++]; }X W#?l  
else if(temp[i1] data[cur]=temp[i1++]; JVIcNK)  
else "8C(_z+]K`  
data[cur]=temp[i2++]; k*UR# z(I  
} SjNwT[.nr7  
} !]jNVg  
L{o >D"  
} +-KRp1qq  
<}x|@u  
改进后的归并排序: MIMPJXT#.  
)MX1776kU  
package org.rut.util.algorithm.support; ?-6x]l=]  
0I ND9h. %  
import org.rut.util.algorithm.SortUtil; Z:o' +oh  
v'2OHb#  
/** Kw5+4R(5  
* @author treeroot bju,p"J1-E  
* @since 2006-2-2 #VMBn}   
* @version 1.0 N%M>,wT  
*/ BzG!Rg|J  
public class ImprovedMergeSort implements SortUtil.Sort { fAA@ziKg  
ss M9t  
private static final int THRESHOLD = 10; 3\U,Kg  
JwG5#CFu^  
/* e^l+ #^fR  
* (non-Javadoc) 0 S`b;f  
* oT5rX ,8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JXa%TpI: E  
*/ :N'[d e  
public void sort(int[] data) { h}VYA\+<B  
int[] temp=new int[data.length]; jJ{ w -$  
mergeSort(data,temp,0,data.length-1); x.4)p6  
} ` a<|CcUGU  
URzE+8m^  
private void mergeSort(int[] data, int[] temp, int l, int r) { fN? Lz%z3  
int i, j, k; v.8S V]  
int mid = (l + r) / 2; .qU%SmQ^  
if (l == r) Pt)}HF|u  
return; kHIQ/\3?Q  
if ((mid - l) >= THRESHOLD) mYs->mg1  
mergeSort(data, temp, l, mid); G QB^  
else HI`A;G]  
insertSort(data, l, mid - l + 1); p=5H^E m1  
if ((r - mid) > THRESHOLD) MAhPO!e5.  
mergeSort(data, temp, mid + 1, r); $R#L@iL-  
else 5t1DB'K9$_  
insertSort(data, mid + 1, r - mid); 5<GRi "7A@  
:aFpz6<  
for (i = l; i <= mid; i++) { p-03V"^&  
temp = data; bJMcI8`  
} ST [1'T+L  
for (j = 1; j <= r - mid; j++) { "OAZ<  
temp[r - j + 1] = data[j + mid]; Y Z2VP  
} j!8+|eA kk  
int a = temp[l]; {,mRMDEy  
int b = temp[r]; v}*u[GWl]  
for (i = l, j = r, k = l; k <= r; k++) { N)I T?  
if (a < b) {  ,8 NEnB  
data[k] = temp[i++]; l$~bkVNL  
a = temp; 7 |eSvC  
} else { +Q#Qu0_   
data[k] = temp[j--]; _w,0wn9N$  
b = temp[j]; 5$G??="K  
} Xq)%w#l5?  
} '!L1z45  
} ob5nk ^y  
0*M}QXt  
/** Y,Zv0-"  
* @param data :H8L(BsI  
* @param l g[+Q~/yq  
* @param i ZJ}LnPr  
*/ 7wEG<,D  
private void insertSort(int[] data, int start, int len) { D\&y(=fzf  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); N'BctKL  
} T-8nUo}i  
} Y/I6.K3  
} aZCT|M1  
} pC.T)k  
KIl.?_61O  
堆排序: m-FDCiN>  
&B,& *Lp  
package org.rut.util.algorithm.support; .E8p-R5)V>  
EuA<{%i  
import org.rut.util.algorithm.SortUtil; 7?WBzo!!L  
cTx/Y&\9  
/** 6 &Aa b56  
* @author treeroot SpiC0  
* @since 2006-2-2 f0bV]<_9  
* @version 1.0 =v=!x  
*/ yQ&%* ?J  
public class HeapSort implements SortUtil.Sort{ 1 b%7FrPkd  
R'HA>?D  
/* (non-Javadoc) \ OINzfbr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Afl'-  
*/ 17 iq  
public void sort(int[] data) { ga9:*G!b{)  
MaxHeap h=new MaxHeap(); =0yJ2[R7Do  
h.init(data); &/FwV'  
for(int i=0;i h.remove(); xyWdzc] (p  
System.arraycopy(h.queue,1,data,0,data.length); . TS=[WGMS  
} :Rx"WY  
la7QN QW  
private static class MaxHeap{ ]Wm ?<7H  
&nw ~gSe  
void init(int[] data){ Ou,_l  
this.queue=new int[data.length+1]; ZTC1t_  
for(int i=0;i queue[++size]=data; z6r/ w  
fixUp(size); ,PxQ[CGg  
} wo9f99  
} [mvHa;-w  
3+uoK f[  
private int size=0; XB 7^Ka  
uL AXN  
private int[] queue; " CoR?[,x  
,]qX_`qF  
public int get() { ]}y'3aW  
return queue[1]; nQ3goVRFP  
} WN1-J(x6  
C P v}A  
public void remove() { 4ux5G`oL  
SortUtil.swap(queue,1,size--); <t@*[Aw  
fixDown(1); ID+k`nP  
} Mwk_S Cy  
file://fixdown cBf{R^>Fd  
private void fixDown(int k) { ^C| 9K>M  
int j; _oVA0@#n  
while ((j = k << 1) <= size) { ?{")Wt  
if (j < size %26amp;%26amp; queue[j] j++; =@  
if (queue[k]>queue[j]) file://不用交换 (.+n1)L?  
break; YcZ4y@6"  
SortUtil.swap(queue,j,k); MX\-)e#  
k = j; W/Q%%)J  
} N)Kr4GC  
} @ xr   
private void fixUp(int k) { EIm\!'R]  
while (k > 1) { XnOl*#P  
int j = k >> 1; M3`A&*\;  
if (queue[j]>queue[k]) kn|l3+  
break; U8z"{  
SortUtil.swap(queue,j,k); dig76D_[e  
k = j;  p ivS8C  
}  2oASz|  
} @'4D9A  
k@U`?7X  
} [nD4\x+  
XePBA J  
} Jj:4@p:  
X  jN.X  
SortUtil: Q6>( Z  
5 Vqvb|  
package org.rut.util.algorithm; Hp AZ{P7  
*X=-^\G  
import org.rut.util.algorithm.support.BubbleSort; KL`>mJo$  
import org.rut.util.algorithm.support.HeapSort; v}D!  
import org.rut.util.algorithm.support.ImprovedMergeSort; *?&O8SSBH  
import org.rut.util.algorithm.support.ImprovedQuickSort; iK:]Q8b  
import org.rut.util.algorithm.support.InsertSort; RVnYe='  
import org.rut.util.algorithm.support.MergeSort; $g;xw?~#  
import org.rut.util.algorithm.support.QuickSort; "FS.&&1(  
import org.rut.util.algorithm.support.SelectionSort; L9)&9 /f  
import org.rut.util.algorithm.support.ShellSort; |pY0IqO  
RoRVu,1  
/** rd{( E  
* @author treeroot SbivW5|61  
* @since 2006-2-2 X_l,fu^C#$  
* @version 1.0 )v0vdAh'b  
*/ jp`N%O]6  
public class SortUtil { `_)dEu  
public final static int INSERT = 1; ;0gpS y$#  
public final static int BUBBLE = 2; mo$*KNW%\  
public final static int SELECTION = 3; k>`X! "  
public final static int SHELL = 4; I),8EEf\  
public final static int QUICK = 5; 4[q * 7m  
public final static int IMPROVED_QUICK = 6; JK`P mp>  
public final static int MERGE = 7; 5yID%  
public final static int IMPROVED_MERGE = 8; 'h6RZKG T  
public final static int HEAP = 9; h6t>yC\  
1 Y& d%AA  
public static void sort(int[] data) { .YRSd  
sort(data, IMPROVED_QUICK); YSif`W!  
} P+UK@~D+G  
private static String[] name={ cj *4 XYu  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,YTIYG](  
}; p2K9R4  
gK CIfxM  
private static Sort[] impl=new Sort[]{ "Wp<^ssMo  
new InsertSort(), Le!I-i( aD  
new BubbleSort(), < r~Tj  
new SelectionSort(), ehq6.+l  
new ShellSort(), }o4Cd$,8  
new QuickSort(),  2Mda'T8  
new ImprovedQuickSort(), kn\>ZgU  
new MergeSort(), Y')+/<Q2E  
new ImprovedMergeSort(), b'YbHUyu  
new HeapSort() Zpmy)W]1  
}; #UQ[8e  
sh1()vT  
public static String toString(int algorithm){ U|nk8 6r  
return name[algorithm-1]; i}19$x.D`  
} ,R+u%bmn#  
($kwlj~c  
public static void sort(int[] data, int algorithm) { JSU\Hh!  
impl[algorithm-1].sort(data); Y$^\D' .k  
} [6|vx},N  
jo~Pr  
public static interface Sort { `upNP/,  
public void sort(int[] data); MR}\fw$(.  
} _c2#  
x3Uv&  
public static void swap(int[] data, int i, int j) { :-)[B^0  
int temp = data; EIRf6jL  
data = data[j]; V_* ^2c)  
data[j] = temp; =j0V/=  
} [>;O'>  
} @!$NUY8,A#  
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