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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。 M]xfH*  
插入排序: 0JW =RW  
>|mZu)HIY;  
package org.rut.util.algorithm.support; 8Ep!  
3teP6|K'g  
import org.rut.util.algorithm.SortUtil; xdMY2u  
/** z7pw~Tqlz  
* @author treeroot eKRE1DK  
* @since 2006-2-2 biRkq c;  
* @version 1.0 ADA}_|O  
*/ W9S6 SO^\  
public class InsertSort implements SortUtil.Sort{ .u]d5z BR  
v=DC3oh-  
/* (non-Javadoc) u R]8ZT")  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P!lfk:M^;  
*/ T>, [V:  
public void sort(int[] data) { S$4 6YQ  
int temp; PgsG*5WQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2_TFc2d  
} k&npC8oA  
} 3;AJp_;  
} KfQ?b_H.  
pDcGf7  
} spWo{  
 }- wK  
冒泡排序: ~VV$wU!A  
HrUE?Sq  
package org.rut.util.algorithm.support; BadnL<cj]  
BN6cu9a  
import org.rut.util.algorithm.SortUtil; EtQ:x$S_  
24\^{3nOK  
/** cI-@nV  
* @author treeroot *DvQnj  
* @since 2006-2-2 i/ PL!'oq  
* @version 1.0 r(rT.D&  
*/ BE!l{  
public class BubbleSort implements SortUtil.Sort{ SeLFubs_  
TY?O$d2b3  
/* (non-Javadoc) D5Z)"~'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -op)X>  
*/ fnIF<Zt  
public void sort(int[] data) { c GyBml1  
int temp; tRNMiU  
for(int i=0;i for(int j=data.length-1;j>i;j--){ TgKSE1  
if(data[j] SortUtil.swap(data,j,j-1); V;hO1xfR3&  
} Uy@:-NC)kn  
} WT}x Cni  
} un}!&*+  
} D'#,%4P,e\  
`rV -,-r@  
} ^?|d< J:{  
U|8?$/*\  
选择排序: |o@U L  
#k,.xMJ~  
package org.rut.util.algorithm.support; 0n\AUgVPF  
WP'.o  
import org.rut.util.algorithm.SortUtil; "`h.8=-  
]l`V#Rd  
/** ;WgzR_'!'  
* @author treeroot ,[3}t%Da  
* @since 2006-2-2 fP 3t0cp  
* @version 1.0 PJ,G_+b!  
*/ (-VH=,Md  
public class SelectionSort implements SortUtil.Sort { dJ>tM'G  
8!MVDp[|"  
/* +wZ|g6vMct  
* (non-Javadoc) a6?t?: ~|  
* { T<[-"h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {U4{v=,!I  
*/ @~FJlG(n  
public void sort(int[] data) { R7c42L\QA  
int temp; D`U,T& @  
for (int i = 0; i < data.length; i++) { qC q?`0&#  
int lowIndex = i; n*Hx"2XF  
for (int j = data.length - 1; j > i; j--) { @VyF' ?}  
if (data[j] < data[lowIndex]) { QHd|cg  
lowIndex = j; =F_j})O5  
} Ox@$ }  
} uc LDl  
SortUtil.swap(data,i,lowIndex); \\{78WDA  
} w }8=sw  
} l9 n$cv^  
F2Gg_u@7M  
} N|8^S  
),$^h7[n  
Shell排序: !j3Xzn9  
R _2#7Xs  
package org.rut.util.algorithm.support; h!tg+9%  
"![KQ  
import org.rut.util.algorithm.SortUtil; uE>m3Y(aP  
TCi0]Y~a  
/** }%<cF i &  
* @author treeroot -s ^cy+jd  
* @since 2006-2-2 D;OPsNQ  
* @version 1.0 {mLv?"M]  
*/ .(s@{=  
public class ShellSort implements SortUtil.Sort{ i_nUyH%b  
`%~f5<  
/* (non-Javadoc) dP"cm0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mq4VwT  
*/ h7S; 4]  
public void sort(int[] data) { 6U,:J'5gP  
for(int i=data.length/2;i>2;i/=2){ Q+'fTmT[,  
for(int j=0;j insertSort(data,j,i); nYO$ |/e  
} -6^Ee?"  
} ony;U#^T  
insertSort(data,0,1); pP%+@;  
} WGo ryvEx  
?P}) Qa  
/** X>Z83qV5d!  
* @param data I*pFX0+  
* @param j Z/;hbbG  
* @param i ;KG}Yr72  
*/ "9Br )3  
private void insertSort(int[] data, int start, int inc) { YB4|J44Y  
int temp; )&-n-m@E  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3%u: c]-wF  
} VeH%E.:  
} .5tXwxad"  
} '=d y =  
P<9T.l  
} )=5*iWe  
}ee3'LUPX  
快速排序: j`_Z`eG  
e.(RhajB  
package org.rut.util.algorithm.support; ~8'HX*B]z  
|1Nz8Vr.  
import org.rut.util.algorithm.SortUtil; ^5+7D1>W%  
@[1,i~H  
/** 9QkssI  
* @author treeroot *48LQzc  
* @since 2006-2-2 1+l[P9?R[  
* @version 1.0 ,S?:lQuK5  
*/ $H6ngL  
public class QuickSort implements SortUtil.Sort{ uL^X$8K;(  
\\ZhM  
/* (non-Javadoc) r%LG>c`^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [p )2!]y  
*/ [Uj,, y.wB  
public void sort(int[] data) { 2(GLc*B>  
quickSort(data,0,data.length-1); #Zn+-Ih  
} YT@N$kOg_  
private void quickSort(int[] data,int i,int j){ ]ij:>O@{$  
int pivotIndex=(i+j)/2; 5yp  
file://swap E.yc"|n7l2  
SortUtil.swap(data,pivotIndex,j); Ae<;b Of  
g}vU*g ;  
int k=partition(data,i-1,j,data[j]); wD@ wOC  
SortUtil.swap(data,k,j); $:?=A5ttuo  
if((k-i)>1) quickSort(data,i,k-1); %F<3_#Y  
if((j-k)>1) quickSort(data,k+1,j); t'C9;  
N9z!-y'X  
} K81&BVx/  
/** + Cq&~<B  
* @param data eqpnh^0}d  
* @param i iT1HbAT]  
* @param j w h^I|D?"  
* @return \d w["k  
*/ myB!\ WY   
private int partition(int[] data, int l, int r,int pivot) { :m("oC@}  
do{ ! n?j)p.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); prxmDI   
SortUtil.swap(data,l,r); z f^@f%R  
} 6|1#Prj  
while(l SortUtil.swap(data,l,r); ~SEIIq  
return l; ~$bQ;`,L  
} S7CD#Y[s  
aIN?|Ch  
} /ZSdY_%s  
w Qp{z  
改进后的快速排序: UZE%!OWpeK  
p+{*w7?8"[  
package org.rut.util.algorithm.support; ET3+07  
KpO%)M!/Z#  
import org.rut.util.algorithm.SortUtil; mPi{:  
ML X: S?  
/** oXqx]@7  
* @author treeroot tNW0 C]  
* @since 2006-2-2 C}]rx{xC  
* @version 1.0 b*< *,Ds/G  
*/ 5}_,rF?cX  
public class ImprovedQuickSort implements SortUtil.Sort { PmDar<m  
|>nVp:t^  
private static int MAX_STACK_SIZE=4096; Zr;(a;QKs  
private static int THRESHOLD=10; yn{U/+  
/* (non-Javadoc) ' @j8tK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oF0*X$_X  
*/ +L#):xr  
public void sort(int[] data) { 8SMa5a{  
int[] stack=new int[MAX_STACK_SIZE]; oc&yz>%q  
@wXo{p@W  
int top=-1; 6r)qM)97  
int pivot; 1;+(HB  
int pivotIndex,l,r; q5~fU$ ,  
1)M%]I4  
stack[++top]=0; ]&L[]  
stack[++top]=data.length-1; 3a,7lTUuB  
hfQ^C6yR  
while(top>0){ wW^3/  
int j=stack[top--]; C#.d sl  
int i=stack[top--]; B4# gT  
Yc V*3`  
pivotIndex=(i+j)/2; 6j~'>w(F  
pivot=data[pivotIndex]; H3o Um1  
7ZgFCK,8m,  
SortUtil.swap(data,pivotIndex,j); z^9df(  
$qhVow5~  
file://partition p"J\+R  
l=i-1; .{k^ tf4  
r=j; Xdc>Z\0V  
do{ <' b%  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); HoKN<w  
SortUtil.swap(data,l,r); +JL"Z4b@R}  
} g ??@~\Ov  
while(l SortUtil.swap(data,l,r); p:^;A/D  
SortUtil.swap(data,l,j); 5nG$6Hw  
7o64|@'j  
if((l-i)>THRESHOLD){ N/ mC,7Q  
stack[++top]=i; 9Dy/-%Ut9  
stack[++top]=l-1; imf_@_  
} affig  
if((j-l)>THRESHOLD){ }^B=f_Ag  
stack[++top]=l+1; \o,`@2H+'  
stack[++top]=j; p\7(IhW@  
} 'q=Ly?9  
q P>Gre  
} GvT'v0&+  
file://new InsertSort().sort(data); w.H\j9E l  
insertSort(data); gj Ue{cb5  
} $+a2CZs!  
/** Z(-@8=0  
* @param data HzF]hm,  
*/ tr\}lfK%  
private void insertSort(int[] data) { l=< :  
int temp; > 9wEx[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fdTyY ;  
} t5pf4M7  
} ~4+=C\r  
} {EGm6WSQ^  
w`J s "_\  
} &/A?*2  
n,NKJt  
归并排序: *.0#cP7 "  
w0^T-O`<  
package org.rut.util.algorithm.support; ~ugK&0i[2  
efF>kcIC  
import org.rut.util.algorithm.SortUtil; O486:tF  
*.9.BD9  
/** #~^Y2-C#  
* @author treeroot I8 {2cM;  
* @since 2006-2-2 9:tKRN_D  
* @version 1.0 w/HGmVa  
*/ `7zNVYur8  
public class MergeSort implements SortUtil.Sort{ /xRPQ|  
`P<m`*  
/* (non-Javadoc) Yj^n4G(h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^g2p!7  
*/ #b4Pn`[   
public void sort(int[] data) { @l:\Ka~TS  
int[] temp=new int[data.length]; u;*Wc9>sU  
mergeSort(data,temp,0,data.length-1); &Rx-zp&dJ  
} ISuye2tExq  
+9mnxU>  
private void mergeSort(int[] data,int[] temp,int l,int r){ OQON~&~  
int mid=(l+r)/2; 85 tQHm6j  
if(l==r) return ; %maLo RJ  
mergeSort(data,temp,l,mid); [/ E_v gZ  
mergeSort(data,temp,mid+1,r); w%[ `'_[  
for(int i=l;i<=r;i++){ ApYri|^r  
temp=data; Td5;bg6Qy  
} NK+iLXC  
int i1=l; ~cSOni`  
int i2=mid+1; s:y=X$&M  
for(int cur=l;cur<=r;cur++){ *a7&v3X  
if(i1==mid+1) u@$C i/J*  
data[cur]=temp[i2++]; 'i|z>si[*  
else if(i2>r) iVt*N$iZ  
data[cur]=temp[i1++]; 7usf^g[dh  
else if(temp[i1] data[cur]=temp[i1++]; \P_1@sH=  
else eJrJ5mlI`  
data[cur]=temp[i2++]; H}QOoXWkg  
} b_]14 v  
} 1e>,QX  
Zv*Z^; X9  
} MKYXYR  
OIa =$l43C  
改进后的归并排序: =kUN ^hb  
b:nHcxDU<  
package org.rut.util.algorithm.support; i# 1:DiF  
<5Jp2x#  
import org.rut.util.algorithm.SortUtil; 0'm4 ) \  
A({8p  
/** NGlX%j4j  
* @author treeroot AoEG%nT  
* @since 2006-2-2 AopC xaJ`  
* @version 1.0 ui,#AZQ#{4  
*/ EF?@f{YY$n  
public class ImprovedMergeSort implements SortUtil.Sort { Kd _tjWS  
{<a(1#{  
private static final int THRESHOLD = 10; !'No5  
vb-L "S?kC  
/* /u }AgIb  
* (non-Javadoc) E3\O?+ h#  
* RbJ,J)C>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A|V |vT7cb  
*/ hmOhXE[ a&  
public void sort(int[] data) { cZN+D D  
int[] temp=new int[data.length]; P"%i 4-S  
mergeSort(data,temp,0,data.length-1); "]ow1{  
} -So&?3,\A@  
\$2E  
private void mergeSort(int[] data, int[] temp, int l, int r) { Kv[,!P"Y  
int i, j, k; qHfs*MBJ%  
int mid = (l + r) / 2; z6 v RTY  
if (l == r) Eoug/we  
return; ;K[`o/#4"  
if ((mid - l) >= THRESHOLD) Q9N=yz  
mergeSort(data, temp, l, mid); 1\q2;5  
else 1q*85 [Y  
insertSort(data, l, mid - l + 1); kn_%'7  
if ((r - mid) > THRESHOLD) m-lUgx7  
mergeSort(data, temp, mid + 1, r); Cyxt EzPp  
else `5;O|qRq  
insertSort(data, mid + 1, r - mid); #e0tT+  
!6ZkLE[XJ<  
for (i = l; i <= mid; i++) { 3VbQDPG  
temp = data; ip4:px-  
} C26PQGo#$  
for (j = 1; j <= r - mid; j++) { ^.F@yo2}  
temp[r - j + 1] = data[j + mid]; _gK@),de  
} )p>BN|L  
int a = temp[l]; 7'_zJI^  
int b = temp[r]; AG2iLictv  
for (i = l, j = r, k = l; k <= r; k++) { MPMJkL$F^  
if (a < b) { .9WJ/RKZ\D  
data[k] = temp[i++]; l tr =_  
a = temp; KE+y'j#C3  
} else { 8@|_];9#.  
data[k] = temp[j--]; #F.;N<a  
b = temp[j]; >De\2gbJ  
} y@J]busU  
} 12aAO|]/~  
} \Nu(+G?e  
 gM20n^  
/** 2As 4}  
* @param data W|3XD-v@  
* @param l qtTys gv  
* @param i lNQt  
*/ n *%<!\gJ  
private void insertSort(int[] data, int start, int len) { 34 W#  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2i#wJ8vrF  
} 6#O n .Q  
} LbtcZ)D!  
} Dg/&m*Yl  
} L@w|2  
AZxx%6  
堆排序: S5E mLgnRs  
l}%!&V0  
package org.rut.util.algorithm.support; ZVJbpn<lo)  
X%xX3e'  
import org.rut.util.algorithm.SortUtil; D Y($  
+/7UM x1  
/** ZPn`.Qc  
* @author treeroot =L9sb!  
* @since 2006-2-2 e~c;wP~cO  
* @version 1.0 [kgT"?w=  
*/ *@l NL=%R  
public class HeapSort implements SortUtil.Sort{ F'W{\4  
|uQJMf[L)  
/* (non-Javadoc) iCao;Zb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JJq= {;  
*/ cUaLv1:HI  
public void sort(int[] data) { DIH.c7o  
MaxHeap h=new MaxHeap(); ]x?9lQ1&  
h.init(data); /}r%DND'  
for(int i=0;i h.remove(); -]R7[5C:  
System.arraycopy(h.queue,1,data,0,data.length); 3'Q H\t5  
} x:O?Fj  
Z,qo jtw  
private static class MaxHeap{ v&i M/pJU  
K7Kd{9-2  
void init(int[] data){ 41mg:xW(J  
this.queue=new int[data.length+1]; b-U LoV  
for(int i=0;i queue[++size]=data; c~b[_J)  
fixUp(size); EQ8jxr<p  
} >5#`j+8=q  
} uI@:\Rss  
NQ !t`  
private int size=0; R{\vOw:*  
OljUK,I]  
private int[] queue; Xz4!#,z/  
~4'e)g.hG  
public int get() { s\1h=V)!H  
return queue[1]; QK<sibDI  
} LpeQx\  
49^;T;'v  
public void remove() { k'&BAC.K,  
SortUtil.swap(queue,1,size--); o*eU0  
fixDown(1); n'v[[bmu  
} ] NL-)8u  
file://fixdown Dr$k6kZ}'U  
private void fixDown(int k) { YH&`+ +  
int j; {*ATY+  
while ((j = k << 1) <= size) { UGj!I  
if (j < size %26amp;%26amp; queue[j] j++; {'E%SIRZ)  
if (queue[k]>queue[j]) file://不用交换 %RG kXOgp  
break; '}e_8 FS  
SortUtil.swap(queue,j,k); [0El z@.C  
k = j; "yXKu)_  
} TDs=VTd@Z  
} *?Nrx=O*  
private void fixUp(int k) { G)]'>m<y  
while (k > 1) { B^P)(Nu+  
int j = k >> 1; Q4Zuz)r*  
if (queue[j]>queue[k]) $[T^ S  
break; [-_3Zr  
SortUtil.swap(queue,j,k); M' e<\wqm  
k = j; [^ $nt  
} Fm_^7|  
} ^=.R#zrc  
9+ nB;vA  
} Ci4`,  
VdjS\VYe,  
} H=9kDP${  
ExeD3Zj  
SortUtil: =,$*-<p=3  
<{ GpAf8-  
package org.rut.util.algorithm; _VGAh:v  
-KhNsUQk  
import org.rut.util.algorithm.support.BubbleSort; z0+LD  
import org.rut.util.algorithm.support.HeapSort; Y#S<:,/sb?  
import org.rut.util.algorithm.support.ImprovedMergeSort; 7DDd 1"jE  
import org.rut.util.algorithm.support.ImprovedQuickSort; a\>+!Vq  
import org.rut.util.algorithm.support.InsertSort; Xyy;BO:  
import org.rut.util.algorithm.support.MergeSort; >h1 3i@`r  
import org.rut.util.algorithm.support.QuickSort; 1K?RA*aj  
import org.rut.util.algorithm.support.SelectionSort; ;>np2K<`  
import org.rut.util.algorithm.support.ShellSort; GK .^Gd  
4~xKW2*`K  
/** k\BJs@-  
* @author treeroot EudX^L5U<d  
* @since 2006-2-2 Yz]c'M@  
* @version 1.0 (RVe,0y  
*/ #%N v\ g;  
public class SortUtil { p4GhT~)l:  
public final static int INSERT = 1; Z^E>)!t  
public final static int BUBBLE = 2; #V&98 F  
public final static int SELECTION = 3; 3.@"GS#"[  
public final static int SHELL = 4; m0QE S  
public final static int QUICK = 5; 6!zBLIYFI  
public final static int IMPROVED_QUICK = 6; )12.W=p  
public final static int MERGE = 7; {,NGxqhE  
public final static int IMPROVED_MERGE = 8; i)y8MlC{  
public final static int HEAP = 9; 3n;>k9{  
]xC#XYE:dy  
public static void sort(int[] data) { w\,N}'G  
sort(data, IMPROVED_QUICK); ]<L(r,@,  
} d-c<dS+R  
private static String[] name={ /N= }wC  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?C)a0>L  
}; fn.KZ  
yJQ>u  
private static Sort[] impl=new Sort[]{ OL]P(HRm]~  
new InsertSort(), EQI9 J#;+  
new BubbleSort(), 01=nS?  
new SelectionSort(), fh_+M"Y0`  
new ShellSort(), -!;2?6R9{  
new QuickSort(), ;\j7jz^uC  
new ImprovedQuickSort(), zU7co.G  
new MergeSort(), WX .Ax$fT  
new ImprovedMergeSort(), Zc9@G-  
new HeapSort() K&ZN!VN/p  
}; } I>68dS[  
!C\$=\$  
public static String toString(int algorithm){ 9d&@;&al  
return name[algorithm-1]; ^POHQQ  
} V%h,JA  
dUN{@a\R0  
public static void sort(int[] data, int algorithm) { ' ` _TFTO  
impl[algorithm-1].sort(data); 4> k"$l/:  
} /T _{k.  
L$L/5/  
public static interface Sort { yPY}b_W  
public void sort(int[] data); '8%jA$o\g  
} Y TpiOPf  
PAng(tubl  
public static void swap(int[] data, int i, int j) { 8tfM,.]_i  
int temp = data; '41'Gn  
data = data[j]; .3 >"qv  
data[j] = temp; |w5m2Z  
} S[ch/  
} L~oy|K67  
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