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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。 / Hexv#3  
插入排序: >=ng?  
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package org.rut.util.algorithm.support; :_+Fe,h>|  
fQ~YBFhlr  
import org.rut.util.algorithm.SortUtil; J/^|Y6  
/** ZTP&*+d  
* @author treeroot ]}jY] l  
* @since 2006-2-2 c>e~$b8  
* @version 1.0 =j!Ruy1  
*/ /,2${$c!  
public class InsertSort implements SortUtil.Sort{ f m'Qif q^  
Zk n1@a  
/* (non-Javadoc) (Y?" L_pC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @|J+ f5O  
*/ ""^.fh  
public void sort(int[] data) { ~<w9a]  
int temp; e025m}%SU  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^DS+O>  
} WjvD C"  
} 3QzHQU  
} 0YVkq?1x9  
W]DZ'  
} J2adA9R/,  
C/x<_VJzN/  
冒泡排序: l/w<R  
:$>TeCm  
package org.rut.util.algorithm.support; &GH ,is  
? $LKn2C  
import org.rut.util.algorithm.SortUtil; b_T?jCyW  
4`#3p@-  
/** DEkFmmw   
* @author treeroot 1f^4J~{  
* @since 2006-2-2 *eo<5YUHt  
* @version 1.0 {JlW1;Jc7  
*/ pC'GKk 8  
public class BubbleSort implements SortUtil.Sort{ D#n^U `\if  
s`:-6{E  
/* (non-Javadoc) .OC{,f+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4_w+NI,;  
*/ idr,s\$>  
public void sort(int[] data) { E)dV;1t  
int temp; h[0,/`qb{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ F! ;0eS"xp  
if(data[j] SortUtil.swap(data,j,j-1); ~rX2oLw{&  
} dM1)wkbET  
} O8N\  
} 1wpeYn7>W  
} {D jz']  
eSgCS*}0$z  
} (&G4@Vd  
{^xp?zpV  
选择排序: &T8prE?  
6NV- &0 _  
package org.rut.util.algorithm.support; r>hkm53  
4#z@B1Jx  
import org.rut.util.algorithm.SortUtil; pA*cF!tq 7  
dw60m,m  
/** n(gw%w+\7  
* @author treeroot ncluA~8  
* @since 2006-2-2 _tg&_P+kV  
* @version 1.0 &\$l%icuo  
*/  >y&4gm  
public class SelectionSort implements SortUtil.Sort { zhDmZ  
)hHkaI>eYv  
/* aD~3C/?aW  
* (non-Javadoc) mACj>0Z'  
* :o}J u}t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {iqH 27\E  
*/ r`|/qP:T[  
public void sort(int[] data) { `":ch9rK  
int temp; K YFumR  
for (int i = 0; i < data.length; i++) { ?#^_yd|<  
int lowIndex = i; r[zxb0YA  
for (int j = data.length - 1; j > i; j--) { cPxA R]'U  
if (data[j] < data[lowIndex]) { .,pGW8Js  
lowIndex = j; iNR6BP W  
} A+T! DnVof  
} }Lx?RU+@=  
SortUtil.swap(data,i,lowIndex); t)LD-%F  
} ;f7(d\=y  
} M$z.S0"  
wj/\ !V!  
} cjU*  
}"<|.[V)  
Shell排序: VpJ/M(UD-  
q&Sd+y&  
package org.rut.util.algorithm.support; #N%xr'H  
8oG0tX3i  
import org.rut.util.algorithm.SortUtil; 4!<8Dd  
3~\mP\/4v  
/** }u&.n pc  
* @author treeroot A('=P}I^  
* @since 2006-2-2 15_OtK  
* @version 1.0 |b{XnD_g  
*/ V?v,q'? $  
public class ShellSort implements SortUtil.Sort{ mHo}, |  
(bi}?V*  
/* (non-Javadoc) _|xO4{X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sB ]~=vUP  
*/ A1:<-TF6^p  
public void sort(int[] data) { Y25S:XHk9  
for(int i=data.length/2;i>2;i/=2){ |k:MXI  
for(int j=0;j insertSort(data,j,i); 7=t4;8|j;  
} j0!Z 20  
} 1FUadSB5)  
insertSort(data,0,1); kJqgY|  
} )_OKw?Zi  
mc;Z#"kf  
/** Y@N}XH<4R  
* @param data @.T '>;izr  
* @param j wp`a:QZ8N  
* @param i 9hEIf,\  
*/ Yjv}@i"  
private void insertSort(int[] data, int start, int inc) { Y~vI@$<~(  
int temp; ^$SI5WK&)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); V} Y %9V  
} Od70w*,  
} Iodk1Y;  
} tgH@|Kg  
9S@PY_ms  
} ulV)X/]1  
*|ez|*-  
快速排序: _Iy0-=G  
Ub*Gv(Pg  
package org.rut.util.algorithm.support; R>U0W{1NO  
-l<b|`s=w.  
import org.rut.util.algorithm.SortUtil; Ro$'|}(+A  
W"+*%x  
/** X[:Hp`_$  
* @author treeroot :zZK%} G<  
* @since 2006-2-2 = ;#?CAa:  
* @version 1.0 MZ o\1tU-i  
*/ vO!p8r F  
public class QuickSort implements SortUtil.Sort{ c1M/:*?%  
^%V'l-}/  
/* (non-Javadoc) jIwz G+)$P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sL|*0,#K  
*/ ]#;;)K}>  
public void sort(int[] data) { =.O8G=;DOA  
quickSort(data,0,data.length-1); 6/Y3#d  
} FuiG=quY  
private void quickSort(int[] data,int i,int j){ P:vAU8d>  
int pivotIndex=(i+j)/2; NrT!&>M  
file://swap Ecp]fUQK  
SortUtil.swap(data,pivotIndex,j); `"zXf-qeE  
F|3Te?_  
int k=partition(data,i-1,j,data[j]); }#5V t  
SortUtil.swap(data,k,j); mH2XwA|  
if((k-i)>1) quickSort(data,i,k-1); .6aC2A]es  
if((j-k)>1) quickSort(data,k+1,j); ;`',M6g  
x9q?^\x  
} ;rZR9fR  
/** F8mS5oB|^  
* @param data esU9  
* @param i -qaJ@T+J+7  
* @param j ;"46H'>!  
* @return {Qbg'|HO=l  
*/ >Lj0B%^EvM  
private int partition(int[] data, int l, int r,int pivot) { &7_xr.c7  
do{ -J*BY2LU3f  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); TG 9 a1q  
SortUtil.swap(data,l,r); a(RTb<  
} ^k6 A,Ak  
while(l SortUtil.swap(data,l,r); =REMSe j  
return l; ci*rem  
} xa#;<8 iV  
Pj(Dl C7G,  
} hB/4.K]8  
8AL`<8$  
改进后的快速排序: -P#PyZEH&I  
shlMJa?  
package org.rut.util.algorithm.support; k|V%*BvY>  
&$$KC?!w  
import org.rut.util.algorithm.SortUtil; ramYSX@  
F6XrJ?JM  
/** VRden>vKN  
* @author treeroot Ok63 w7  
* @since 2006-2-2 mQ(6ahD U  
* @version 1.0 A$d)xq-]K  
*/ } )D E  
public class ImprovedQuickSort implements SortUtil.Sort { tNpBRk(}  
LF6PKS  
private static int MAX_STACK_SIZE=4096; zv[$ N,  
private static int THRESHOLD=10; Xa o*h(Q@L  
/* (non-Javadoc) b,C2(?hg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V+`gkWe/  
*/ ZAATV+Z  
public void sort(int[] data) { -DAkVFsN  
int[] stack=new int[MAX_STACK_SIZE]; h&5bMW  
rdj_3Utv  
int top=-1; S7oPdzcU-  
int pivot; {"kE u  
int pivotIndex,l,r; Qc4r?7S<  
b$@vJ7V!  
stack[++top]=0; 6g fn5G  
stack[++top]=data.length-1; Uk1|y\  
2Xw=kwu  
while(top>0){ eR1SPS1+  
int j=stack[top--]; D;?cf+6$  
int i=stack[top--]; @ FNaCmBX  
K Eda6zZH  
pivotIndex=(i+j)/2; ^Pwtu  
pivot=data[pivotIndex]; %<dvdIB  
b@v_db]|t.  
SortUtil.swap(data,pivotIndex,j); zv%]j0 ?  
y  J|/^qs  
file://partition ]u5B]ZQnA  
l=i-1; Ga<Uvr%+  
r=j; YL?2gBT  
do{ hZZ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wak:"B[  
SortUtil.swap(data,l,r); g49G7sk  
} gDN7ly]6M  
while(l SortUtil.swap(data,l,r); %3%bRP  
SortUtil.swap(data,l,j); xF8U )j !  
%[cZ,F=  
if((l-i)>THRESHOLD){ NZb}n`:  
stack[++top]=i; kuq&8f~!  
stack[++top]=l-1; :  I q  
} ?<;9=l\Q  
if((j-l)>THRESHOLD){ J#'8]p3E  
stack[++top]=l+1; Cg8s9qE?  
stack[++top]=j; 9}|x N8  
} "M;aNi^B  
P.y06^ X}A  
} IRknD3LX  
file://new InsertSort().sort(data); 79*f <Gr  
insertSort(data); eae`#>XP  
} _|Uv7>}J^  
/** tE8aL{<R  
* @param data |NdWx1  
*/ ~dBx<  
private void insertSort(int[] data) { RVN;j4uMg  
int temp; 7gc?7TM  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0f5c#/7C9  
} M!wa }  
} *t{^P*pc  
} eH_< <Xh!v  
=OeLF  
} ^O3i)GO  
^ 'ws/(  
归并排序: j.ZXLe~  
m9=93W?   
package org.rut.util.algorithm.support; s'^sT=b  
} *jmW P  
import org.rut.util.algorithm.SortUtil; 4KX\'K  
`m`Y3I  
/** (PC)R9r5  
* @author treeroot :V0sKg|sS  
* @since 2006-2-2 z*)kK  
* @version 1.0 *.6m,QqJ(  
*/ MW2{w<-]7  
public class MergeSort implements SortUtil.Sort{ C"QB`f:  
sOO_J!bblP  
/* (non-Javadoc) 8AJ#].q0F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e-Z ul.m  
*/ 3UX6Y]E3  
public void sort(int[] data) { I}+9@d  
int[] temp=new int[data.length]; ?="?)t[  
mergeSort(data,temp,0,data.length-1); 90 >V he  
} Bm5\*Xd1(  
[]$L"?]0uk  
private void mergeSort(int[] data,int[] temp,int l,int r){ CB0p2WS_  
int mid=(l+r)/2; 5.LfN{gE)  
if(l==r) return ; h0?w V5H  
mergeSort(data,temp,l,mid); X4<Y5?&0  
mergeSort(data,temp,mid+1,r); FR']Rj  
for(int i=l;i<=r;i++){ 8},:  
temp=data; q?qH7={,eu  
} qP$)V3l  
int i1=l; `B~zB=}  
int i2=mid+1; mqtYny'  
for(int cur=l;cur<=r;cur++){ _3IRj=Cs  
if(i1==mid+1) _SnD)k+TgJ  
data[cur]=temp[i2++]; X"sJiFS  
else if(i2>r) -\7_^8 am  
data[cur]=temp[i1++]; D\| U_>  
else if(temp[i1] data[cur]=temp[i1++]; k;Fxr%  
else @*E=O|  
data[cur]=temp[i2++]; 6 ZAZJn|  
} $*:g~#bh  
} "A> _U<Y  
p=m:^9/  
} =Qf{  
/Pxny3  
改进后的归并排序: 6OB3%R'p  
l.P;85/+  
package org.rut.util.algorithm.support; LJ K0WWch  
cbYQ';{  
import org.rut.util.algorithm.SortUtil; ^#XQ2UN  
(I#mo2  
/** B}"V.Msv/  
* @author treeroot I1#MS4;$^  
* @since 2006-2-2 M?AKJE j5  
* @version 1.0 \8g= Ix  
*/ Omi/sKFMi  
public class ImprovedMergeSort implements SortUtil.Sort { ^ FM  
:G#+ 5 }  
private static final int THRESHOLD = 10; F B:nkUR`  
+* j8[sz  
/* ?\)h2oi!F5  
* (non-Javadoc) h?H|)a<^9  
* do*aE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nEPTTp+B  
*/ S{3c}>n  
public void sort(int[] data) { /::Y &&$f  
int[] temp=new int[data.length]; _''un3eCY  
mergeSort(data,temp,0,data.length-1); . :>e"D  
} 5f MlOP_  
vt n T   
private void mergeSort(int[] data, int[] temp, int l, int r) { S;y4Z:!  
int i, j, k; !{{gL=_@  
int mid = (l + r) / 2; CxN xb)c &  
if (l == r) w0+X;aId  
return; ##} 7cFX  
if ((mid - l) >= THRESHOLD) MTN*{ug2:  
mergeSort(data, temp, l, mid); bdLi _k  
else L|}s Z\2!  
insertSort(data, l, mid - l + 1); ~@)s)K  
if ((r - mid) > THRESHOLD) V#b=mp  
mergeSort(data, temp, mid + 1, r); rlA/eQrS  
else mU~&oU  
insertSort(data, mid + 1, r - mid); ~ rQ,%dH  
Yufj y=!  
for (i = l; i <= mid; i++) { .c:h!-D;  
temp = data;  jr_z ?  
} 3!osQ1  
for (j = 1; j <= r - mid; j++) { "DA%vdu  
temp[r - j + 1] = data[j + mid]; A)V*faD  
} 9X%: ){  
int a = temp[l]; ,i??}Wm5G  
int b = temp[r]; uo J0wG.  
for (i = l, j = r, k = l; k <= r; k++) { D/~1?p  
if (a < b) { ]@b9m  
data[k] = temp[i++]; 2%L`b"9}V  
a = temp; gua7<z6=eh  
} else { /PeT4hW}  
data[k] = temp[j--];  oC*a;o  
b = temp[j]; w/ (c}%v}=  
} 3l45(%g+  
} HKJBR)T  
} KYtCN+vsG  
'vZIAnB8  
/** $Seh4  
* @param data 4xr^4\ lk  
* @param l ~/9RSdv7  
* @param i W dD889\  
*/ FZ ?eX`,  
private void insertSort(int[] data, int start, int len) { 0VSIyG_Z  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); A8{ xZsH  
} `G/g/>y  
} & ]] l0B  
} _1qR1< V  
} Ao$k[#px  
h !K" ;qw  
堆排序: *bf 5A9  
2Kz$y JTp  
package org.rut.util.algorithm.support; g.@[mf0r  
mV`R'*1UC  
import org.rut.util.algorithm.SortUtil; k|?[EWIi^  
q,@# cQBV  
/** e4SS'0|  
* @author treeroot T+@i;M  
* @since 2006-2-2 qvB{vU  
* @version 1.0 EI6kBRMo  
*/ ~M{/cv  
public class HeapSort implements SortUtil.Sort{ /go[}X5QR[  
xS tsw5d  
/* (non-Javadoc) X"+p=PGZK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qi7C.w;  
*/ T=tW'tlT\v  
public void sort(int[] data) { ' QG`^@Z  
MaxHeap h=new MaxHeap(); IiqqdU]  
h.init(data); I V# 8W  
for(int i=0;i h.remove(); O}Pqbx&  
System.arraycopy(h.queue,1,data,0,data.length); xm1di@  
} UTKyPCfj  
;Y;r%DJ  
private static class MaxHeap{ 03v+eT  
tm.60udbo  
void init(int[] data){ %K|f,w=m  
this.queue=new int[data.length+1]; F&R*njJcc  
for(int i=0;i queue[++size]=data; xw}yl4WT{  
fixUp(size); C0N}B1-MU  
} 'hU5]}=  
} ^rO"U[To  
vRC >=y*=  
private int size=0; (FApkvy  
AF"7 _  
private int[] queue; 4h|*r !  
p4f9v:b[  
public int get() {  4bA^Gq  
return queue[1]; yjL+1_"B  
} eZ(ThA*2=t  
SgewAng?@o  
public void remove() { L}rZ1wV6  
SortUtil.swap(queue,1,size--); ; >H1A  
fixDown(1); }6-olVg  
} L5I!YP#v  
file://fixdown !;|#=A9  
private void fixDown(int k) { ao9#E"BfM  
int j; TYGI f4z  
while ((j = k << 1) <= size) { i,<'AL )  
if (j < size %26amp;%26amp; queue[j] j++; 3W[?D8yi)  
if (queue[k]>queue[j]) file://不用交换 J^jd@E  
break; 07:V[@'  
SortUtil.swap(queue,j,k); KF+r25uy[+  
k = j; EQ~<NzRp=  
} N Nk  
} |8CxMs  
private void fixUp(int k) { W..*!UGl  
while (k > 1) { Pz0MafF|T  
int j = k >> 1; s,#We} bv  
if (queue[j]>queue[k]) C @<T(`o  
break; uOzoE_i  
SortUtil.swap(queue,j,k); IxuK<Oe:O  
k = j; U$gR}8\e  
} 5Z_C (5)/Y  
} k5aB|xo  
o=7,U/{D!  
} hJ`Gu7  
W/BPf{U  
} yYJ_;Va  
o-H?q!  
SortUtil: *z69ti/ t  
E& 6I`8  
package org.rut.util.algorithm; 2T+-[}*  
e&ysj:W5 "  
import org.rut.util.algorithm.support.BubbleSort; o+=wQ$"tP  
import org.rut.util.algorithm.support.HeapSort; \_,p@r]Q  
import org.rut.util.algorithm.support.ImprovedMergeSort; ;@qS#7SRB  
import org.rut.util.algorithm.support.ImprovedQuickSort; RN-gZ{AW  
import org.rut.util.algorithm.support.InsertSort; \7b, Mz!  
import org.rut.util.algorithm.support.MergeSort; Y}R$RDRL  
import org.rut.util.algorithm.support.QuickSort; !i-t6f  
import org.rut.util.algorithm.support.SelectionSort; 9F[3B`w  
import org.rut.util.algorithm.support.ShellSort; M]6+s`?r  
;dUKFdKH}  
/** bC:sd2s  
* @author treeroot Ga02Zk  
* @since 2006-2-2 b]z_2h~`  
* @version 1.0 rmA?Xlh\  
*/ N\__a~'0p  
public class SortUtil { '(B -{}l  
public final static int INSERT = 1; JS ^Cc  
public final static int BUBBLE = 2; "dIWHfQB  
public final static int SELECTION = 3; @-[}pZ/  
public final static int SHELL = 4; }p6]az3  
public final static int QUICK = 5; |#o' =whTl  
public final static int IMPROVED_QUICK = 6; WeRDaG  
public final static int MERGE = 7; Q /?`);  
public final static int IMPROVED_MERGE = 8; xP'0a  
public final static int HEAP = 9; jw{N#QDh  
|OCiq|#  
public static void sort(int[] data) { ?[ )}N _o#  
sort(data, IMPROVED_QUICK); >&;J/ME  
} 2{=D)aC$f  
private static String[] name={ lgiKNZgB?  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ")MHP~ ?  
}; 0>CG2SRn  
K_L7a>Fr  
private static Sort[] impl=new Sort[]{ >xo<i8<Miv  
new InsertSort(), 8[J%TWq%9  
new BubbleSort(), 3>VL>;75[  
new SelectionSort(), :1qLRr  
new ShellSort(), :'wxm3f  
new QuickSort(), Mu`_^gG  
new ImprovedQuickSort(), @>46.V{P}B  
new MergeSort(), Wo&22,EB  
new ImprovedMergeSort(), ":+d7xR?o  
new HeapSort() 9~Sa7P  
}; YQ:$m5ai  
fpQFNV  
public static String toString(int algorithm){ 5lHt~hB\  
return name[algorithm-1]; gD)M7`4  
} 9J7yR}2-F  
>mA]2gV<a  
public static void sort(int[] data, int algorithm) { V z  
impl[algorithm-1].sort(data); Awfd0L;9  
} k0j4P^d  
X~VI}dJ  
public static interface Sort { zu?112-v2  
public void sort(int[] data); }\<=B%{  
} no-";{c  
)R `d x  
public static void swap(int[] data, int i, int j) { ]g$ky.;  
int temp = data; A7Y CSjB  
data = data[j]; -<x%  
data[j] = temp; 51eZfJB  
} X_X7fRC0  
} prS%lg>  
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