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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。 Af3|l  
插入排序: 2<D| {  
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package org.rut.util.algorithm.support; P6+ B!pY  
nI:M!j5s`  
import org.rut.util.algorithm.SortUtil; 5(>=};r+  
/** ">}6i9o  
* @author treeroot /,\V}`Lx"  
* @since 2006-2-2 -^_2{i  
* @version 1.0 /7}pReUj  
*/ "i0>>@NR'  
public class InsertSort implements SortUtil.Sort{ (b25g!  
sN41Bz$q.  
/* (non-Javadoc) y4-kuMYR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B;k'J:-"  
*/ f-%M~:  
public void sort(int[] data) { QjTSbHtH  
int temp; /U;j-m&   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {JE [  
} IkCuw./  
} *yBVZD|?H  
} %8*:VR  
z\ZnxZ@  
} DY2*B"^  
/ VYT](  
冒泡排序: u)oAQ<w  
~ZKJ:&f  
package org.rut.util.algorithm.support; eF+F"|1h  
'f( CN3.!  
import org.rut.util.algorithm.SortUtil; X1#Ar)  
<>HtXn/  
/** x^ `/&+m  
* @author treeroot VYG@_fd!x  
* @since 2006-2-2 ~?\U];l  
* @version 1.0 q?!HzZ  
*/ JL M Xkcc  
public class BubbleSort implements SortUtil.Sort{ =gVMt  
jQ{ @ol}n  
/* (non-Javadoc) 0'o[ 2,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <h -)zI  
*/ ZJDV'mC}  
public void sort(int[] data) { q`xc h[H  
int temp; v>8.TE~2  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^ 4`aONydl  
if(data[j] SortUtil.swap(data,j,j-1); 0 qS/>u*  
} sOhn@*X  
} Qs1CK;+zU  
} j_<qnBeQ  
} DTO_IP  
{$8+n::  
} ~/rD _K  
{H)7K.hQN  
选择排序: >7W)iwF  
]IV{;{E)  
package org.rut.util.algorithm.support; x}/jh  
JSL&` `  
import org.rut.util.algorithm.SortUtil; }#ink4dK:  
@2E52$zu  
/** )Cy>'l*Og7  
* @author treeroot /a\i  
* @since 2006-2-2 u@Hz7Q} P  
* @version 1.0 5} %R  
*/ 5zK,(cF0-  
public class SelectionSort implements SortUtil.Sort { )LGVR 3#  
. 1kB8&}  
/* OBWb0t5H?  
* (non-Javadoc) D!.c??   
* Y(UK:LZ'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,`f]mv l  
*/ Im6gWDdq@6  
public void sort(int[] data) { v0 C+DKi  
int temp; |]G%b[  
for (int i = 0; i < data.length; i++) { aM~IRLmK  
int lowIndex = i; cKTjQJ#  
for (int j = data.length - 1; j > i; j--) { Ta\F~$M  
if (data[j] < data[lowIndex]) { J _rrc;F  
lowIndex = j; }ny7LQ  
} #B\s'j[A"  
} j|KDgI<0  
SortUtil.swap(data,i,lowIndex); -,y p?<  
} ]Thke 4  
} q/@2=$]hH3  
<tvLKx  
} (.UU40:t  
r D@*xMW  
Shell排序: a3 }V/MY  
qSP &Fi  
package org.rut.util.algorithm.support; 8KJUC&`  
:i&]J$^;  
import org.rut.util.algorithm.SortUtil; ,7d/KJ^7  
F^GNOD3J  
/** $b`nV4p  
* @author treeroot ~dS15E4-Pp  
* @since 2006-2-2 e@P(+.Ke  
* @version 1.0 ~cc }yDe  
*/ lTC0kh  
public class ShellSort implements SortUtil.Sort{ ao)';[%9s  
Gwk$<6E  
/* (non-Javadoc) ,8r?C!m]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,IB\1#  
*/ DQGrXMpV0  
public void sort(int[] data) { FO*Gc Z  
for(int i=data.length/2;i>2;i/=2){ }||u {[  
for(int j=0;j insertSort(data,j,i); {&+M.Xn  
} 0`"oR3JY  
} ;t0 q ?9  
insertSort(data,0,1); t`B@01;8A  
} T +vo)9w  
x'g4DYl  
/** -J3~j kf  
* @param data *H!BThft4  
* @param j 'LMj.#A<g  
* @param i rfk{$g  
*/ Q yw@ r  
private void insertSort(int[] data, int start, int inc) { Y#}qXXZ>]  
int temp; 6J>AU  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4'z)J1M  
} pVc+}Wzh  
} Qs\a&Q=0H  
} q=pRe-{  
jJIP $  
} N# }A9t  
v,iZnANZ&P  
快速排序: =!t;e~^8]  
S]fu M%  
package org.rut.util.algorithm.support; 5, $6mU#=  
OMK,L:poC  
import org.rut.util.algorithm.SortUtil; JlYZ\  
@<P2di  
/** n~UI 47  
* @author treeroot wH?)ZL  
* @since 2006-2-2 + ,Krq 3P  
* @version 1.0 8xENzTR  
*/ ^2- <XD)  
public class QuickSort implements SortUtil.Sort{ WO.u{vW]'  
VgVDTWs7  
/* (non-Javadoc) Qa,=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G%sq;XT61  
*/ :|n[zjK/S  
public void sort(int[] data) { {.2\}7.c  
quickSort(data,0,data.length-1); JaUzu3*=  
} *b>RUESF  
private void quickSort(int[] data,int i,int j){ t.8r~2(?  
int pivotIndex=(i+j)/2; V22z-$cb  
file://swap sQ`G'<!  
SortUtil.swap(data,pivotIndex,j); ;mEn@@{  
O q$_ q  
int k=partition(data,i-1,j,data[j]); jRjeL'"G  
SortUtil.swap(data,k,j); f|,Kh1{e  
if((k-i)>1) quickSort(data,i,k-1); 2]vTedSOl  
if((j-k)>1) quickSort(data,k+1,j); wPM&N@Pf  
s)- ;74(  
} wj6u,+  
/** 5TJd9:\Af  
* @param data bY#BK_8 :  
* @param i opa}z-7>^  
* @param j MS\vrq'_  
* @return ?=9'?K/~a  
*/ y.A3hV%6b  
private int partition(int[] data, int l, int r,int pivot) { 41<~_+-@  
do{ n725hY6}<l  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); X8ulaa  
SortUtil.swap(data,l,r); d#E&,^@M  
} }gQ2\6o2g  
while(l SortUtil.swap(data,l,r); 7(1`,Y  
return l; %_W4\  
} 0{b} 1D  
T [$-])iK  
} $6Q^u r:  
mcQL>7ts  
改进后的快速排序: SO6)FiPy!n  
_CHzwNU  
package org.rut.util.algorithm.support; AtJ{d^  
qS\#MMsTd  
import org.rut.util.algorithm.SortUtil; kL1<H%1'  
?5EH/yV;  
/** [XY%<P3D  
* @author treeroot J- S.m(  
* @since 2006-2-2 ;(?tlFc  
* @version 1.0 T^7Cv{[  
*/ s21} a,eB  
public class ImprovedQuickSort implements SortUtil.Sort { 67iI wY*8'  
xuv W6Q;  
private static int MAX_STACK_SIZE=4096; G{!er:Vwdh  
private static int THRESHOLD=10; 5csh8i'V  
/* (non-Javadoc) D#LV&4e>.E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YJv$,Z&;HO  
*/ mi] WZlg$  
public void sort(int[] data) { SyVGm@  
int[] stack=new int[MAX_STACK_SIZE]; Wu{=QjgY  
eMRH*MyD  
int top=-1; >>J3"XHX  
int pivot; 5(H%Ia  
int pivotIndex,l,r; j"nOxs  
W+&5G(z~  
stack[++top]=0; d AcSG  
stack[++top]=data.length-1; _H]^7`;  
]"_c-=  
while(top>0){ P)K $+oo  
int j=stack[top--]; ]QaKXg)3q  
int i=stack[top--]; `sKyvPtG  
LJ[zF~4#  
pivotIndex=(i+j)/2; B)Y[~4o  
pivot=data[pivotIndex]; :rL%,o"  
l?*DGW(t{  
SortUtil.swap(data,pivotIndex,j); %(6IaqJ[  
\o!3TK"N  
file://partition #`u}#(  
l=i-1; 96^aI1:  
r=j; lndz  
do{ N_T5sZ\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &q>8D'  
SortUtil.swap(data,l,r); e\C-a4[C8P  
} dQ8RrD=$&  
while(l SortUtil.swap(data,l,r); Z i6s0Uck  
SortUtil.swap(data,l,j); V8/d27\  
fLe~X!#HF  
if((l-i)>THRESHOLD){ Z oXz@/T  
stack[++top]=i; z&gma Ywq  
stack[++top]=l-1; (S!UnBb&  
} `2 <:$]  
if((j-l)>THRESHOLD){ 59oTU  
stack[++top]=l+1; B2[f1IMI  
stack[++top]=j; vR\E;V  
} w||t3!M+n  
D<J'\mo  
} 8lV:-"+5  
file://new InsertSort().sort(data); t.ulG *  
insertSort(data); K+`GVmD  
} NTt4sWP!I  
/** bJ_rU35s>  
* @param data i%9vZ  
*/ )5b_>Uy  
private void insertSort(int[] data) { \( s `=(t  
int temp; Qbv@}[f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =c@hE'{  
} \< .BN;t{  
} 9;L4\  
} ;3/}"yG<p  
^i8,9T'=  
} q8$t4_pF  
Leb Kzqe  
归并排序: 1)= H2n4)  
y8$3kXh  
package org.rut.util.algorithm.support; i W6O9 ~  
?1ey$SSU]  
import org.rut.util.algorithm.SortUtil; X)!XR/?  
r^ Dm|^f#  
/** CC=I|/mBM  
* @author treeroot `&A`&-nc=  
* @since 2006-2-2 ,w~3K%B4  
* @version 1.0 50MM05aC  
*/ Tm`@5  
public class MergeSort implements SortUtil.Sort{ rT` sY  
!kSemDC  
/* (non-Javadoc) ]S%_&ZMCM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FXr^ 4B}  
*/ j9k:!|(2'  
public void sort(int[] data) { 9Vm aB  
int[] temp=new int[data.length]; L~5f*LE$1  
mergeSort(data,temp,0,data.length-1); 3g;Y  
} pl>b 6 |  
{O>Td9  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7SHllZ  
int mid=(l+r)/2; 9YI@c_1 Q  
if(l==r) return ; ;((t|  
mergeSort(data,temp,l,mid); 'KjH|u  
mergeSort(data,temp,mid+1,r); QT+kCN  
for(int i=l;i<=r;i++){ US)i"l7:H*  
temp=data; 1#x5 o2n  
} C[,h!  
int i1=l; +1wEoU.l2  
int i2=mid+1; 0cG[<\qT  
for(int cur=l;cur<=r;cur++){ n=-vOa%  
if(i1==mid+1) (LK@w9)i;  
data[cur]=temp[i2++]; !U?C _  
else if(i2>r) X.#*+k3s0  
data[cur]=temp[i1++]; &Z~_BT  
else if(temp[i1] data[cur]=temp[i1++]; %/3+:}@G  
else 4vL\t uoz  
data[cur]=temp[i2++]; O + aK#eF  
} qVh?%c1.Y  
} MX]#|hEeQ  
"=Z=SJ1D  
} |WaWmp(pQ  
<*J"6x  
改进后的归并排序: @rT$}O1?`  
)s>|;K{  
package org.rut.util.algorithm.support; `mcb0  
[,U l  
import org.rut.util.algorithm.SortUtil; Z><+4 '  
)$p36dWl  
/** # fF5O2E'3  
* @author treeroot ?xwi2<zz  
* @since 2006-2-2 y" H5>  
* @version 1.0 |\Gkhi>;  
*/ N $>Ml!J  
public class ImprovedMergeSort implements SortUtil.Sort { j?C[ids<  
RK@K>)"f  
private static final int THRESHOLD = 10; P6%qNR/ x  
$|7"9W}m*  
/* C)m@/w  
* (non-Javadoc) tfHr'Qy BC  
* nrE.0Ue1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b6S"&hs  
*/ @8c@H#H  
public void sort(int[] data) { iJh{ ,0))g  
int[] temp=new int[data.length]; rWWp P<  
mergeSort(data,temp,0,data.length-1); "zw{m+7f,  
} ]iTP5~8U  
\#biwX  
private void mergeSort(int[] data, int[] temp, int l, int r) { 8cfsl lI  
int i, j, k; n=b!c@f4  
int mid = (l + r) / 2; $~q{MX&J  
if (l == r) V #vkj  
return; /QS Nv  
if ((mid - l) >= THRESHOLD) <,O| fY%  
mergeSort(data, temp, l, mid); yUcU-pQ  
else 4%}iKoT   
insertSort(data, l, mid - l + 1); G-D}J2r=F  
if ((r - mid) > THRESHOLD) MX*4d{l  
mergeSort(data, temp, mid + 1, r); [|$C2Dhw=  
else DPY+{5q2  
insertSort(data, mid + 1, r - mid); r!w4Br0  
PM@_ZJ 'x  
for (i = l; i <= mid; i++) { lrPIXIM  
temp = data; @[FO;4w  
} iaMl>ua  
for (j = 1; j <= r - mid; j++) { t(UBs-t  
temp[r - j + 1] = data[j + mid]; z*VK{O)o  
} 6GAEQ]  
int a = temp[l]; Y, Lpv|  
int b = temp[r]; WTD86A  
for (i = l, j = r, k = l; k <= r; k++) { .`KzA]&#  
if (a < b) { \|vo@E  
data[k] = temp[i++]; p}~Sgi  
a = temp; ymrnu-p o  
} else { ,4,Bc<  
data[k] = temp[j--]; 2 .Xx)(>  
b = temp[j]; ;|\j][A  
} nIOSP :'>  
} ~W"@[*6w  
} `<@ "WSn  
L5:1dF  
/** nCV7(ldmH  
* @param data GS>YfJ&DZ  
* @param l .5SYN -@  
* @param i @(6P L^I  
*/ iqoMQ7%  
private void insertSort(int[] data, int start, int len) { tw 3zw`o:  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); owa&HW/_  
} sOz {spA  
} >BJBM |  
} 3 q8S  
} \u6.*w5TI  
q(46v`u  
堆排序: SPe%9J+  
cAx$W6S  
package org.rut.util.algorithm.support; ,ZYPffu<*  
}]1C=~lC  
import org.rut.util.algorithm.SortUtil; `)8S Ix  
{Gh9(0,B?  
/** CE (zt  
* @author treeroot $<VH~Q<  
* @since 2006-2-2 _`*G71PS  
* @version 1.0 //3fgoly  
*/ ifWQwS/,a  
public class HeapSort implements SortUtil.Sort{ "J&WH~8+N  
TrgKl2xfx  
/* (non-Javadoc) m1K4_a)^[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z6So5r%wZ  
*/ /&qE,>hd.+  
public void sort(int[] data) { YHgNL LZ?  
MaxHeap h=new MaxHeap(); o*~=NoR  
h.init(data); O<AGAD  
for(int i=0;i h.remove(); <v\$r2C*  
System.arraycopy(h.queue,1,data,0,data.length); Jz0AYiCq  
} :v45Ls4J  
%b h: c5  
private static class MaxHeap{ S6JWsi4C:,  
]:n9MFv  
void init(int[] data){ );S8`V  
this.queue=new int[data.length+1]; b"Nd8f[  
for(int i=0;i queue[++size]=data; Om;` "5  
fixUp(size); W}k/>V_  
} hVz]' ,  
} )2^r 0(x  
[k%u$  
private int size=0; $E8}||d  
C%%gCPI^y  
private int[] queue; 2/F8kVx{  
 '"hSX=  
public int get() { ;i [;%  
return queue[1]; oFzmH!&ED  
} Fo0s<YlS-  
SgN?[r)  
public void remove() { vXM {)  
SortUtil.swap(queue,1,size--); 39 pA:3iTd  
fixDown(1); EKuLt*a/  
} sw:a(o&$  
file://fixdown m.gv?  
private void fixDown(int k) { ;Ob^@OM  
int j; ]W`M <hEI  
while ((j = k << 1) <= size) { 8F$]@0v`%  
if (j < size %26amp;%26amp; queue[j] j++; }QCn>LXE  
if (queue[k]>queue[j]) file://不用交换 s`yg?CR`,  
break; mYk~ ]a-  
SortUtil.swap(queue,j,k); y\9#"=+  
k = j; E KJ2P$  
} hoiC J}us  
} Hkf]=kPy*  
private void fixUp(int k) { zlkW-rRkR  
while (k > 1) { E8lq2r=  
int j = k >> 1; F[B=sI  
if (queue[j]>queue[k]) p9MJa[}V  
break; '!MKZKer  
SortUtil.swap(queue,j,k); s gZlk9x!Q  
k = j; 6 !Mm")  
} qd'Z|'j  
} soLmr's  
V HLNJnA  
} Hh&qjf  
Osy_C<O  
} JPZH%#E(  
# x X  
SortUtil: @'Pay)P  
CLuQ=-[|  
package org.rut.util.algorithm; #B!M,TWf9s  
k2#|^N  
import org.rut.util.algorithm.support.BubbleSort; wT,=C'  
import org.rut.util.algorithm.support.HeapSort; (7$BF~s:,  
import org.rut.util.algorithm.support.ImprovedMergeSort; Nn?$}g  
import org.rut.util.algorithm.support.ImprovedQuickSort; [{>1wJ Pdj  
import org.rut.util.algorithm.support.InsertSort; Bq-}BN?pz  
import org.rut.util.algorithm.support.MergeSort; vr6YE;Rs  
import org.rut.util.algorithm.support.QuickSort; /z}b1m+  
import org.rut.util.algorithm.support.SelectionSort; @ W,<8  
import org.rut.util.algorithm.support.ShellSort; /* "pylm  
4l> d^L  
/** \lwLVe  
* @author treeroot $:A80(#+  
* @since 2006-2-2 }YM[aq?6  
* @version 1.0 m G+=0Rn^  
*/ CZ{7?:^f  
public class SortUtil { ^/}&z  
public final static int INSERT = 1; *.T?#H  
public final static int BUBBLE = 2; )tS;gn  
public final static int SELECTION = 3; R`Hy0;X  
public final static int SHELL = 4; <33,0."K  
public final static int QUICK = 5; 8WKY 4nkj  
public final static int IMPROVED_QUICK = 6; ^HE@ [b  
public final static int MERGE = 7; aej'cbO  
public final static int IMPROVED_MERGE = 8; wL>;_KdU`  
public final static int HEAP = 9; <q I!Dj{  
b9v<Jk  
public static void sort(int[] data) { x2OAkkH\]i  
sort(data, IMPROVED_QUICK); /?S^#q>m%  
} xm=$D6O:  
private static String[] name={ & Yx12B\  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }iU pBn  
}; _lm^v%J$  
Zdfh*MHMg  
private static Sort[] impl=new Sort[]{ B;piO-hH  
new InsertSort(), =NNxe"Kd;U  
new BubbleSort(), 3kwkU  
new SelectionSort(), W|s" ;EAM  
new ShellSort(), M7&G9SGZ  
new QuickSort(), i;29*"  
new ImprovedQuickSort(), hR.vJ2oa  
new MergeSort(), 5/CF_v  
new ImprovedMergeSort(), &$l#0?Kc^  
new HeapSort() @Q;s[Kg{!  
}; mwI7[I2q  
ua ky2SgN  
public static String toString(int algorithm){ dI!/H&`B]  
return name[algorithm-1]; >Ml5QO$*.q  
} *{\))Zmhd  
(<e<Q~(  
public static void sort(int[] data, int algorithm) { MY}K.^ 4^  
impl[algorithm-1].sort(data); jCIY(/  
} [r'A8!/|[  
ki1j~q  
public static interface Sort { Cbm^: _LR  
public void sort(int[] data); aEVy20wd  
} } .<(L  
Ji6.-[:  
public static void swap(int[] data, int i, int j) { Zp9kxm'  
int temp = data; >6)|># Wi  
data = data[j]; lJT"aXt'M  
data[j] = temp; 7;&,L H  
} Sn' +~6i  
} L1y71+iqU  
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