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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{~p(sQL  
插入排序: >Ei-Spy>Xl  
`63?FzT y  
package org.rut.util.algorithm.support; SI/@Bbd=  
6f$h1$$)^  
import org.rut.util.algorithm.SortUtil; uTSTBI4t  
/** ao@"j}c  
* @author treeroot .H.#W1`  
* @since 2006-2-2 ~-1!?t/%  
* @version 1.0 d;Uzl 1;  
*/ z j[/~ I  
public class InsertSort implements SortUtil.Sort{ kX\\t.nH  
jl!rCOLt4  
/* (non-Javadoc) ]+ \]2`?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?2;gmZd7  
*/ i]qVT)j  
public void sort(int[] data) { upD 2vtU  
int temp; ;k<n}shD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Hg~O0p}[  
} <G5d{rKZ  
} .6@qU}  
} qTGEi  
L}>XH*  
} im}=  
d#?.G3YmK  
冒泡排序: 0cd`. ZF  
P^1+;dL,D  
package org.rut.util.algorithm.support; w]BZgF.  
,+iREh;  
import org.rut.util.algorithm.SortUtil; L`fDc  
m' LRP:9v  
/** @kq~q;F  
* @author treeroot o0f{ePZ=  
* @since 2006-2-2 G^Z SQ!  
* @version 1.0 `ViFY   
*/ 3Pb]Of#  
public class BubbleSort implements SortUtil.Sort{ LLa72HW  
3C=|  
/* (non-Javadoc) SBj9sFZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U\_-GS;1  
*/ =h`yc$ A(2  
public void sort(int[] data) { H;&^A5  
int temp; > xc7Hr~  
for(int i=0;i for(int j=data.length-1;j>i;j--){ '+!@c&d#%o  
if(data[j] SortUtil.swap(data,j,j-1); ]yTMWIx#  
} "IK QFt'  
} q#8$@*I  
} kt.y"^  
} Cg~GlZk}  
Jgf73IX[  
} #$<7  
yK1Z&7>J>  
选择排序: ]5!}S-uJq  
kJ;fA|(I  
package org.rut.util.algorithm.support; `M "O #  
}'?N+MN  
import org.rut.util.algorithm.SortUtil; ' 9K4A'2[  
$;9zD11  
/** SiD [54OM  
* @author treeroot R\L0   
* @since 2006-2-2 l P4A?J+Q  
* @version 1.0 sCX 8  
*/ S{ v [65  
public class SelectionSort implements SortUtil.Sort { *3S ./ C}  
a<Ru)Q?=  
/* 7?@s.Sz|fV  
* (non-Javadoc) I?) .D?o  
* XQ+KI:g2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .?gpI Zv  
*/ ' (JSU   
public void sort(int[] data) { ;P` z ?>J:  
int temp; D6 2xC5  
for (int i = 0; i < data.length; i++) { kW v)+  
int lowIndex = i; yq3i=RB(  
for (int j = data.length - 1; j > i; j--) { [V\0P,l  
if (data[j] < data[lowIndex]) { vm3B>ACJ  
lowIndex = j; %fS__Tb#u  
} MX=mGfoa  
} |.A#wjF9  
SortUtil.swap(data,i,lowIndex); qusX]Tst z  
} 3Mvm'T:[  
} E~=`Ac,G2  
2#sJ`pdQ  
} tgu}^TfKkg  
MroJ!.9  
Shell排序: z|VQp,ra  
"V|1w>s  
package org.rut.util.algorithm.support; aY^_+&&G  
4g}eqW  
import org.rut.util.algorithm.SortUtil; |Rh%wJ  
*vx!twu1o  
/** e 1W9Z $m  
* @author treeroot F_m[EB  
* @since 2006-2-2 g~5$X{  
* @version 1.0 93z oJiLRf  
*/ &E@8 z&  
public class ShellSort implements SortUtil.Sort{ B(x$ Ln"y[  
l;4},N  
/* (non-Javadoc) L-7?:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J#tGQO  
*/ e8HGST`  
public void sort(int[] data) { %R%e0|a  
for(int i=data.length/2;i>2;i/=2){ 4I"p>FIkY  
for(int j=0;j insertSort(data,j,i); [m>kOv6>^  
} eq0&8/=  
} ]!yuD/4A  
insertSort(data,0,1); `"N56  
} jU1([(?"  
?8cgQf$  
/** D49yV`  
* @param data O|t@p=]  
* @param j fc'NU(70c  
* @param i faqOGAb  
*/ (Rqn)<<2  
private void insertSort(int[] data, int start, int inc) { 7*bUy)UZ  
int temp; dgLE/r?  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \KlOj%s  
} Cr?|bDv}o  
} !J3dlUFRO  
} HZp}<7NR(7  
>t-9yO1XQq  
} {> T r22S  
J2X;=X5  
快速排序: WoP5[.G  
{rQ SB;3  
package org.rut.util.algorithm.support; ]>E)0<t  
D0'L  
import org.rut.util.algorithm.SortUtil; ;T!w$({V0z  
o!q3+Pp;}  
/** D4e*Wwk  
* @author treeroot [O) Q\|k  
* @since 2006-2-2 Hw 7   
* @version 1.0 sW'SR  
*/ L: hEt  
public class QuickSort implements SortUtil.Sort{ 4Wz@^7|V5  
xgw[)!g^\  
/* (non-Javadoc) 0 K T.@P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q;&\77i$  
*/ m+y5Q&;f  
public void sort(int[] data) { ('H[[YODh  
quickSort(data,0,data.length-1); ~j%g?;#*  
} (*{Y#XD{  
private void quickSort(int[] data,int i,int j){ I9xQ1WJc`  
int pivotIndex=(i+j)/2; K-%x] Fp=  
file://swap Ns?8N":  
SortUtil.swap(data,pivotIndex,j); (;RmfE'PX  
"bI'XaSv  
int k=partition(data,i-1,j,data[j]); )%8 ;C]G;  
SortUtil.swap(data,k,j); jH+ddBVA  
if((k-i)>1) quickSort(data,i,k-1); !q:[$g-@q  
if((j-k)>1) quickSort(data,k+1,j); zGtWyXP  
LxWnPi ^  
} eko$c,&jY  
/** V)[ta`9  
* @param data  V6opV&  
* @param i I[mlQmwsL.  
* @param j u9-:/<R#}y  
* @return q)Qd+:a7{  
*/ jNKu5"HB  
private int partition(int[] data, int l, int r,int pivot) { gIGyY7{(s8  
do{ BCH{0w^D  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }.j<kmd  
SortUtil.swap(data,l,r); TQXp9juK  
} drr W?U  
while(l SortUtil.swap(data,l,r); JQ-O=8]  
return l; CC Z'(Tkq  
} $)UMRG  
/oA=6N#j  
} O=2"t%Gc  
P ?- #d\qi  
改进后的快速排序: @FC|1=+  
T8nOb9Nrj  
package org.rut.util.algorithm.support; JHF <vyt5<  
\UBTNY,  
import org.rut.util.algorithm.SortUtil; L'=mDb  
1}O&q6\"J  
/** 0K+a/G@ n\  
* @author treeroot f{s}[p~  
* @since 2006-2-2 O$<m(~[S  
* @version 1.0 ]r]=Q"/5  
*/ ;5i~McH# t  
public class ImprovedQuickSort implements SortUtil.Sort { xqP DL9\  
Fjq~^_8  
private static int MAX_STACK_SIZE=4096; SSoD}N  
private static int THRESHOLD=10; $~$NQe!/  
/* (non-Javadoc) ]/G~ L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8G GC)2  
*/ 0A]+9@W;  
public void sort(int[] data) { =6PTT$,  
int[] stack=new int[MAX_STACK_SIZE]; >!o||Yn  
CN7 2 E  
int top=-1; N*Is_V\R  
int pivot; hFLD2 <   
int pivotIndex,l,r; 7iI6._"!w  
ssf.ef$  
stack[++top]=0; @-^jbmu^ P  
stack[++top]=data.length-1; l1<]pdLTR  
dm;C @.ML  
while(top>0){ @m#1[n;  
int j=stack[top--]; O r {9?;G  
int i=stack[top--]; #3fS_;G  
MST\_s%[  
pivotIndex=(i+j)/2; %Z:07|57I[  
pivot=data[pivotIndex]; u\)2/~<]  
,CGq_>Z  
SortUtil.swap(data,pivotIndex,j); 9E@}@ZV(  
@51!vQwqR  
file://partition Xs,[Z2_iq  
l=i-1; {*#}"/:8K  
r=j; >gj%q$@  
do{ ymNL`GYN[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C rA7lu'  
SortUtil.swap(data,l,r); w+^z{3>  
} (z8^^j[  
while(l SortUtil.swap(data,l,r); z}772hMB  
SortUtil.swap(data,l,j); 1[? xU:;9  
|sG@Ku7~4  
if((l-i)>THRESHOLD){ "Uk "  
stack[++top]=i; F. N4Q'2Z  
stack[++top]=l-1; N;\G=q] 9  
} 8y9`xRy  
if((j-l)>THRESHOLD){ CLQE@kF;  
stack[++top]=l+1; kNqIPvuMr  
stack[++top]=j; J83{&N2u  
} >q+q];=(  
L%h Vts'  
} [/P}1 c[)U  
file://new InsertSort().sort(data); ~8rVf+bg3  
insertSort(data); c8R#=^ DD  
} t<UtSkE1  
/** fo$5WTY  
* @param data $e99[y@  
*/ mVSaC  
private void insertSort(int[] data) { Or({|S9d2  
int temp; V~9vf*X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QTy xx  
} f@G3,u!]i  
} <'Ppu  
} z_gjC%(y  
5.]eF$x2  
} D&)w =qIu  
|i/Iv  
归并排序: P&6hk6#  
Rt%3\?rf  
package org.rut.util.algorithm.support; X+R?>xq{=h  
wZAY0@pA  
import org.rut.util.algorithm.SortUtil; "s?!1v(v  
r.JY88"  
/** &,4 3&pFU  
* @author treeroot Qz[4M`M  
* @since 2006-2-2 1vy*u  
* @version 1.0 TgDx3U[  
*/ -pF3q2zb  
public class MergeSort implements SortUtil.Sort{ vX9B^W||x  
eD#R4  
/* (non-Javadoc) %-A#7\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +nLsiC{&  
*/ RhL!Z z  
public void sort(int[] data) { Vm3e6Y,K  
int[] temp=new int[data.length]; AV t(e6H  
mergeSort(data,temp,0,data.length-1); C>A*L4c]F  
} JQ[~N-  
@P$_2IU"  
private void mergeSort(int[] data,int[] temp,int l,int r){ yjq~O~  
int mid=(l+r)/2; .lcI"%>  
if(l==r) return ; z 8w&;Ls  
mergeSort(data,temp,l,mid); j/C.='?%  
mergeSort(data,temp,mid+1,r); =m+'orJ1  
for(int i=l;i<=r;i++){ iJ7?6)\  
temp=data; 2O*(F>>dT  
} xlhc`wdm  
int i1=l; tB,1+I=   
int i2=mid+1; t%B ,ATW  
for(int cur=l;cur<=r;cur++){ yv2&K=rZp  
if(i1==mid+1) =9LeFrz  
data[cur]=temp[i2++]; & rsNB:!  
else if(i2>r) 2V-zmyJs5  
data[cur]=temp[i1++]; zG[GyyAQ  
else if(temp[i1] data[cur]=temp[i1++]; L_k'r\L  
else `.0WK  
data[cur]=temp[i2++]; Em(&cra  
} >f !  
} |q( .j4[i  
7,pn0,HI  
} 0_A|K>7  
$@wTc  
改进后的归并排序: nc0!ag  
A3;}C+K  
package org.rut.util.algorithm.support; jTDaW8@L  
YNRorE   
import org.rut.util.algorithm.SortUtil; szDd!(&pv  
L{2KK]IF  
/** 3T<aGW1  
* @author treeroot RV&=B%w+  
* @since 2006-2-2 $_u9Y!  
* @version 1.0 N'!:  
*/ O.9r'n4f  
public class ImprovedMergeSort implements SortUtil.Sort { S<-e/`p=H  
figCeJ!W4  
private static final int THRESHOLD = 10; q@"0(Oj  
Bq20U:f  
/* a$~pAy5C  
* (non-Javadoc) Z0(}doh  
* Hxw 7Q?F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 <~E;:  
*/ LH" CIL2  
public void sort(int[] data) { &' 0|U{|  
int[] temp=new int[data.length]; d/m.VnW  
mergeSort(data,temp,0,data.length-1); AWXBk+  
} aj$#8l |zu  
'5*8'.4Sy  
private void mergeSort(int[] data, int[] temp, int l, int r) { Q&X#( 3&'  
int i, j, k; ;(Xig$k  
int mid = (l + r) / 2; hm&cRehU  
if (l == r) sK&[sN33  
return; 5*n3*rbU:  
if ((mid - l) >= THRESHOLD) o\ M  
mergeSort(data, temp, l, mid); -9f> rH\3  
else I 'qIc ?  
insertSort(data, l, mid - l + 1); j3J\%7^i  
if ((r - mid) > THRESHOLD) ;;3oWsil}  
mergeSort(data, temp, mid + 1, r); @_+B'<2  
else )6k([u%;B  
insertSort(data, mid + 1, r - mid); Ag6^>xb^  
E&wz0d;gf  
for (i = l; i <= mid; i++) { ^J[r<Dm8F  
temp = data; {cW%i:  
} v Mi&0$  
for (j = 1; j <= r - mid; j++) { w<0F-0:8  
temp[r - j + 1] = data[j + mid]; Avc9W[4  
} \'BA}v &/  
int a = temp[l]; "SV#e4C.  
int b = temp[r]; zFq8xw  
for (i = l, j = r, k = l; k <= r; k++) { Hl3%+f  
if (a < b) { B9&$sTAB  
data[k] = temp[i++]; q0>@!1Wb  
a = temp; P>i!f!o*I  
} else { %#zqZ|q  
data[k] = temp[j--]; D=0^" 7K  
b = temp[j]; -VO&#Mt5u  
} ?_VoO  
} soTmKqj E  
} ^`MGlI}   
3G;#QK -c  
/** %+{[%?xh  
* @param data N1vPY]8  
* @param l ?KKu1~a_  
* @param i "s!|8F6$  
*/ m! 3e>cI  
private void insertSort(int[] data, int start, int len) { iz0GL&<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); S=N3qBH6  
} -fB;pS,  
} DC-tBbQkk  
} 'Pm.b}p<  
} KcK,%!>B  
k|Syw ATr  
堆排序: o-f;$]yp>  
==?!z<I.d  
package org.rut.util.algorithm.support; | k:ecw  
bRhc8#kw)  
import org.rut.util.algorithm.SortUtil; T"tR*2HwSd  
$1F$3"k  
/** [PI!.9H  
* @author treeroot /4!.G#DLQ  
* @since 2006-2-2 +IM: jrT(  
* @version 1.0 ]m(C}}  
*/ CHojF+e  
public class HeapSort implements SortUtil.Sort{ eL`}j9  
'T7=.Hq<4  
/* (non-Javadoc) [ljC S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,?k~>,{3  
*/ 0<n*8t?A-  
public void sort(int[] data) { z87_/(nu  
MaxHeap h=new MaxHeap();  u51%~  
h.init(data); `/4 R$E{  
for(int i=0;i h.remove(); DA(ur'D  
System.arraycopy(h.queue,1,data,0,data.length); NO%x 2dx0  
} \mIm}+!H  
L6ifT`;T  
private static class MaxHeap{ ~:ldGfb|  
*>#mI/#}  
void init(int[] data){ T0Kjnzs  
this.queue=new int[data.length+1]; naHQeX;  
for(int i=0;i queue[++size]=data; gl$Ks+o d  
fixUp(size); ! /qQ:k-.  
} &l0-0 T>  
} FB\lUO)U\c  
us0{y7(p  
private int size=0; 0&@pD`K e  
B'kV.3t  
private int[] queue; s;9>YV2at  
,+Bp>=pvs  
public int get() { w9W0j  
return queue[1]; [l7 G9T}/[  
} 0?0$6F  
I/&uiC{l@  
public void remove() { f0h^ULd  
SortUtil.swap(queue,1,size--); Ol@ssm  
fixDown(1); 0]._|Ubn6)  
} 9eh9@~mU"l  
file://fixdown ?cH,!2  
private void fixDown(int k) { t'.oty=  
int j; z/Kjz$l!  
while ((j = k << 1) <= size) { L4x08 e  
if (j < size %26amp;%26amp; queue[j] j++; dZ"B6L!^(  
if (queue[k]>queue[j]) file://不用交换 nB+UxU@  
break; p#  4@  
SortUtil.swap(queue,j,k); qVidubsW  
k = j; 9wB}EDZ  
} rZt7C(FM$7  
} -{=c T?"+  
private void fixUp(int k) { @8jc|X<A  
while (k > 1) { 2=[deQs  
int j = k >> 1; ="<S1}.  
if (queue[j]>queue[k]) $X;wj5oj  
break; &|% F=/VU  
SortUtil.swap(queue,j,k); j0eGg::  
k = j; rRK^vfoJ`  
} v6$ }saTX  
} OfAh? ^R  
d ~`_;.z  
} rF*L@HI  
KVC$o+<'`%  
} |rhCQ"H  
DClV&\i=o  
SortUtil: F\H^=P  
Jm5&6=  
package org.rut.util.algorithm; { yvKUTq`  
#dKHU@+U"  
import org.rut.util.algorithm.support.BubbleSort; yOQEF\  
import org.rut.util.algorithm.support.HeapSort; \dG#hH4ZD  
import org.rut.util.algorithm.support.ImprovedMergeSort; @[vwqPOL  
import org.rut.util.algorithm.support.ImprovedQuickSort; VZRM=;V  
import org.rut.util.algorithm.support.InsertSort; O6Gg?j  
import org.rut.util.algorithm.support.MergeSort; !K~L&.\T  
import org.rut.util.algorithm.support.QuickSort; j_I  
import org.rut.util.algorithm.support.SelectionSort; 4NN81~v 4  
import org.rut.util.algorithm.support.ShellSort; \kQ@G  
4YmN3i  
/** R DAihq  
* @author treeroot `"#0\Wh  
* @since 2006-2-2 cfg_xrW0^  
* @version 1.0 w{HDCPuS  
*/ ~nSGN%  
public class SortUtil { j. m(Z}  
public final static int INSERT = 1; , id`=L=  
public final static int BUBBLE = 2; \!_:<"nX.  
public final static int SELECTION = 3; Hh<3k- *d  
public final static int SHELL = 4; vA(')"DDT  
public final static int QUICK = 5; kV mJG#  
public final static int IMPROVED_QUICK = 6; Z\)emps  
public final static int MERGE = 7; jxt^d  
public final static int IMPROVED_MERGE = 8; VHUOI64*  
public final static int HEAP = 9; 2S{IZ]  
sXmZ0Dv  
public static void sort(int[] data) { x,3oa_'E  
sort(data, IMPROVED_QUICK); Ijs"KAW ?  
} u3Jsu=Nx-  
private static String[] name={ +TR#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" yQ3*~d~U|L  
}; ;?A?1q8*  
>UQ`@GdafR  
private static Sort[] impl=new Sort[]{ KioD/  
new InsertSort(), ZYBK'&J4m  
new BubbleSort(), ?pLKUAh  
new SelectionSort(), P!Mz5QZ+  
new ShellSort(), G#~6a%VW  
new QuickSort(), ic+tn9f\  
new ImprovedQuickSort(), j1LL[+G-"_  
new MergeSort(), " * Qwaq_  
new ImprovedMergeSort(), v8< MAq  
new HeapSort()  FsbX{  
}; NyJ=^=F#  
nKoc%TNqe  
public static String toString(int algorithm){ d_5wMK6O6  
return name[algorithm-1]; -bq\2Yc$]  
} ke(LjRS  
X[XSf=  
public static void sort(int[] data, int algorithm) { g[W`4  
impl[algorithm-1].sort(data); &;)6G1X1  
} W9$mgs=S`E  
wkp|V{k  
public static interface Sort { hgz7dF  
public void sort(int[] data); <^Hh5kfS'  
} >#MGGCGL  
n,Z B-"dW  
public static void swap(int[] data, int i, int j) { (:p&[HNuN  
int temp = data; P9wx`x""k  
data = data[j]; +bj[.  
data[j] = temp; 8")1,   
} ^<@9ph  
} jx=2^A/i2-  
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