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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。 + AE&GU  
插入排序: ygmv_YLjm  
[5>S-Z  
package org.rut.util.algorithm.support; \[Sm2/9v  
s`$NW^']  
import org.rut.util.algorithm.SortUtil; =gxgS<bde  
/** <_##YSGh,  
* @author treeroot 8QkWgd7y  
* @since 2006-2-2 kvMk:.  
* @version 1.0 Qv9*p('~A  
*/ hgTM5*fD}  
public class InsertSort implements SortUtil.Sort{ -@EBbM&  
zvek2\*rO  
/* (non-Javadoc) Q'n(^tbL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4+ASw N9  
*/ 4e=/f,o1  
public void sort(int[] data) { ,Y+r<;  
int temp; Ss"|1]acP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8>C; >v  
} .b =M5JsyV  
} 2ApDpH`fiJ  
} YQN]x}:E+4  
 l 'AK  
} F/Rng'l  
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冒泡排序: .){e7U6b{  
Uq<a22t@  
package org.rut.util.algorithm.support; Ze [g0"  
Y9IJ   
import org.rut.util.algorithm.SortUtil; Cm,*bgX  
@<@R=aqE  
/** %8}WX@SB  
* @author treeroot ua]\xBWx  
* @since 2006-2-2 (SgEt  
* @version 1.0 %JP&ox|^&  
*/ (cOND/S  
public class BubbleSort implements SortUtil.Sort{ no~OR Q  
`^ieT#(O  
/* (non-Javadoc) yj}bY?4I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ns+)Y^(5  
*/ =yk Rki  
public void sort(int[] data) { )64LKb$  
int temp; HGP%a1RF#  
for(int i=0;i for(int j=data.length-1;j>i;j--){ R9b/?*%=9  
if(data[j] SortUtil.swap(data,j,j-1); @+0@BO1 2  
} fZka%[B  
} Wo:zU  
} otmIu`h  
} b xk'a,!S  
|'V<>v.v  
} IqvqvHxLX  
LVR;&Z>j  
选择排序: l>3M|js@/  
Q{J"`d2  
package org.rut.util.algorithm.support; n9<roH  
dXA{+<!!  
import org.rut.util.algorithm.SortUtil; Q%,o8E2~  
nZ2mEt  
/** fWtb mUq  
* @author treeroot A&NC0K}G!  
* @since 2006-2-2 D\45l  
* @version 1.0 *6 z'+'  
*/ J[j/aDdP  
public class SelectionSort implements SortUtil.Sort { v7{ P].M  
I2t-D1X  
/* p\\P50(-  
* (non-Javadoc) EuKrYY]g  
* ;#5-.z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7AGZu?1]M  
*/ L:t)$iF5+  
public void sort(int[] data) { %KJ"rvi4K  
int temp; (c|$+B^*  
for (int i = 0; i < data.length; i++) { N3XVT{ yo  
int lowIndex = i; S7?f5ux   
for (int j = data.length - 1; j > i; j--) { O+(. 29  
if (data[j] < data[lowIndex]) { fd!pM4"0  
lowIndex = j; ++J Bbuzj!  
} .XV]<)<K$  
} dK0}% ]i3#  
SortUtil.swap(data,i,lowIndex); |g7nh[  
} ])Q9=?Sd}  
} yBYuDfeZ  
)o " SB1  
} N27K  
{a+Fx}W  
Shell排序: bGMeBj"R  
>j(I[_g  
package org.rut.util.algorithm.support; Q>SPV8s   
3<KZ.hr  
import org.rut.util.algorithm.SortUtil; :)A.E}G  
VV0EgfJ  
/** %9~kA5Qj  
* @author treeroot r 48;_4d)D  
* @since 2006-2-2 q_9N+-?{7  
* @version 1.0 nK?k<  
*/ DU*g~{8T$  
public class ShellSort implements SortUtil.Sort{ + ,vJ7  
]zhq.O >2{  
/* (non-Javadoc) 3&a*]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X*0eN3o.  
*/ C)&gL=O*$  
public void sort(int[] data) { _-|yCo  
for(int i=data.length/2;i>2;i/=2){ tKs4}vW  
for(int j=0;j insertSort(data,j,i); ;9!yh\\   
} |h^G$guw  
} +s+PnZ%0V  
insertSort(data,0,1); wa(Wit"-  
} T9<H%iF  
;i-D~Np|  
/** ^huBqEs  
* @param data VuO)  
* @param j HonAK  
* @param i "EOk^1,y  
*/ eSvc/CU  
private void insertSort(int[] data, int start, int inc) { ;4S [ba1/  
int temp; ?v)"%.  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $X.'W\o|  
} hIzPy3  
} %~B)~|h  
} \0*yxSg,^  
>PTu*6Z  
}  eo<~1w  
WoClTb>F  
快速排序: -Iruua7b  
8CnvvMf  
package org.rut.util.algorithm.support; 5JU(@}Db  
X*>o9J45V  
import org.rut.util.algorithm.SortUtil; \DcC1W  
ys.!S.k+  
/** :nbW.B3GV  
* @author treeroot $E4O^0%/p  
* @since 2006-2-2 iaa (ce  
* @version 1.0 \fM!^  
*/ V%{ 9o  
public class QuickSort implements SortUtil.Sort{ *xZQG9`kt  
&t.>^7ELF  
/* (non-Javadoc) 8&2gM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _,K>u6N&  
*/ H~_^w.P  
public void sort(int[] data) { RqX4ep5j  
quickSort(data,0,data.length-1); 6M<mOhp@}n  
} N8L)KgM5#7  
private void quickSort(int[] data,int i,int j){ *]>OCGsr  
int pivotIndex=(i+j)/2; [hv3o0".  
file://swap n_xQSVI0F  
SortUtil.swap(data,pivotIndex,j); .2(@jx,[  
>ihe|WN  
int k=partition(data,i-1,j,data[j]);  ZZFI\o  
SortUtil.swap(data,k,j); 9TXm Z  
if((k-i)>1) quickSort(data,i,k-1); cVP49r}}v  
if((j-k)>1) quickSort(data,k+1,j); |$|nV^y  
*2m&?,nJ  
} t#D\*:Xi  
/** %. 6?\w1e  
* @param data /xrq'|r?C  
* @param i /J9T=N  
* @param j "` ?W u  
* @return rfZj8R&  
*/ RQK**  
private int partition(int[] data, int l, int r,int pivot) { 7"CH\*%  
do{ ~RR_[t2Z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); EH!EyNNb  
SortUtil.swap(data,l,r); = VX<eV  
} @=zBF'<.9  
while(l SortUtil.swap(data,l,r); }~\].I6  
return l; ;uA_gn!  
} 1Sc~Vb|>  
`bt)'ERO%#  
} .+JP tL  
kmwrv -W  
改进后的快速排序: K7&8 ;So  
GE3U0w6WbK  
package org.rut.util.algorithm.support; Y;/=3T7An  
>G3 J3P(  
import org.rut.util.algorithm.SortUtil; OTFu4"]M  
Ci#5@Q9#w  
/** I3E8vi%B.  
* @author treeroot iDkWW  
* @since 2006-2-2 `bi_)i6Low  
* @version 1.0 fPk9(X;G!p  
*/ oj4)7{  
public class ImprovedQuickSort implements SortUtil.Sort { }HQT@&=  
Q]?J%P.  
private static int MAX_STACK_SIZE=4096; U-]PWt?C{  
private static int THRESHOLD=10; %},S#5L3  
/* (non-Javadoc) >0;"qT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XY t8vJ  
*/ HI?~t| [y  
public void sort(int[] data) { X)R] a]1A  
int[] stack=new int[MAX_STACK_SIZE]; 5tCq}]q#P  
m{yNnJ3O  
int top=-1; "y ,(9_#  
int pivot; 7Hkf7\JY  
int pivotIndex,l,r; Xi`U`7?D(=  
[@FeRIu8  
stack[++top]=0; 1oW]O@R  
stack[++top]=data.length-1; uA}FuOE6  
?KuJs9SM  
while(top>0){ fN%5D z-e  
int j=stack[top--]; *1$~CC7  
int i=stack[top--]; .LTFa.jxA  
hpi_0lMkI  
pivotIndex=(i+j)/2; #pn AK  
pivot=data[pivotIndex]; 9 0if:mYA  
K'rs9v"K|  
SortUtil.swap(data,pivotIndex,j); Nm:<rI,^  
N,+g/o\f  
file://partition .N><yQ-j3'  
l=i-1; ^fiRRFr[  
r=j; md +`#-D\O  
do{ czsoD) N  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SFPIr0 u  
SortUtil.swap(data,l,r); ;@-5lCvC(+  
} /t6u"I~  
while(l SortUtil.swap(data,l,r); Hr,gV2n  
SortUtil.swap(data,l,j); =/'*(\C2  
-8kW!F  
if((l-i)>THRESHOLD){ Eq.zCD8A  
stack[++top]=i; wm`"yNbD  
stack[++top]=l-1; K[;,/:Y  
} U[ O!&:6  
if((j-l)>THRESHOLD){ ^EBM;&;7  
stack[++top]=l+1; 3UtXxL&L`  
stack[++top]=j; y?4=u,{C  
} p`.fYW:p  
2+Y`pz47W  
} [Ik B/Xbw|  
file://new InsertSort().sort(data); .;v'oR1x5  
insertSort(data); PaI63 !  
} o|n0?bThS-  
/**  hahD.P<  
* @param data  SSM> ID  
*/ @:&dOqQ  
private void insertSort(int[] data) { MJR\ g3  
int temp; ..{^"`FQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^aM/BS\  
} 5+"8q#X$  
} <@ex})su  
} LzSusjEW@  
b020U>)v  
} 7 ,~Krzv  
,ui'^8{gK  
归并排序: jN{xpd  
Jj!tRZT  
package org.rut.util.algorithm.support; 5:3$VWLa <  
krY.Cc]  
import org.rut.util.algorithm.SortUtil; WjxBNk'f  
{"AYOc>2|  
/** s+G9L)b'  
* @author treeroot 5{f/H] P  
* @since 2006-2-2 zw:b7B]  
* @version 1.0 zYJ`.,#C 5  
*/ ]1$AAmQH  
public class MergeSort implements SortUtil.Sort{ ),FN29mZu  
>d[vHyA~!D  
/* (non-Javadoc) }nERQq&A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XzFqQ- H  
*/ @?AE75E{  
public void sort(int[] data) { *jSc&{s~  
int[] temp=new int[data.length]; s/|'1E\F  
mergeSort(data,temp,0,data.length-1); g {wPw  
} T<,tC"  
(&x\,19U$  
private void mergeSort(int[] data,int[] temp,int l,int r){ J3E:r_+  
int mid=(l+r)/2; u+FftgA  
if(l==r) return ; aVL%-Il}  
mergeSort(data,temp,l,mid); xH-k~#  
mergeSort(data,temp,mid+1,r); (?wKBUi  
for(int i=l;i<=r;i++){ *njB fH'  
temp=data; bv"({:x  
} Bm>(m{sX>  
int i1=l; iEO2Bil]  
int i2=mid+1; EB<tX`Wp  
for(int cur=l;cur<=r;cur++){ f3|=T8"t  
if(i1==mid+1) Q#bo!]H{t  
data[cur]=temp[i2++]; 2_ DtzY:=  
else if(i2>r) Q*o4zW  
data[cur]=temp[i1++]; !H.lVA  
else if(temp[i1] data[cur]=temp[i1++]; GgZf6~b1J  
else 9:5NX3"p  
data[cur]=temp[i2++]; 3+PM_c)Y  
} OtqLigt&l  
} !-Q!/?  
uT2cHzqKB  
} ;8kfgp M_  
@}RyW&1Z  
改进后的归并排序: o : DnZN  
#?| z&9  
package org.rut.util.algorithm.support; 'v)+S;oB  
S8<aq P  
import org.rut.util.algorithm.SortUtil; \"j1fAD!  
skArocs  
/** RtEkd_2  
* @author treeroot l'R`XGT  
* @since 2006-2-2 88U  
* @version 1.0 (jMp`4P  
*/ N/.9Aj/h~&  
public class ImprovedMergeSort implements SortUtil.Sort { GY :IORuA4  
~<R~Q:T  
private static final int THRESHOLD = 10; ai2}vR  
7nIMIkT:  
/* ZS;kCdL   
* (non-Javadoc) ZXkAw sr  
* AG=1TZI"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >qZRIDE5$  
*/ %uMsXa  
public void sort(int[] data) { y[eNM6p  
int[] temp=new int[data.length]; M,lu)~H  
mergeSort(data,temp,0,data.length-1); y5 +&P  
} -v&srd^  
}k~0R-m  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,PAKPX9v_F  
int i, j, k; y['icGU6  
int mid = (l + r) / 2;  3".W  
if (l == r) >?x Vr  
return; '1*MiFxKq  
if ((mid - l) >= THRESHOLD) Dne&YVF9V  
mergeSort(data, temp, l, mid); <VPtbM@(m  
else 1yf&ck1R  
insertSort(data, l, mid - l + 1); H[oi? {L  
if ((r - mid) > THRESHOLD) ?RyvM_(N6  
mergeSort(data, temp, mid + 1, r); U:(t9NX b  
else ?+_"2XY  
insertSort(data, mid + 1, r - mid); Vngi8%YWp  
_en8hi@Z  
for (i = l; i <= mid; i++) { m 9Q{ )?J7  
temp = data; CiF bk&-g  
} Ha\hQ'99  
for (j = 1; j <= r - mid; j++) { Rh^$0Q*2  
temp[r - j + 1] = data[j + mid]; 2|EoP-K7  
} 5lbh "m=  
int a = temp[l]; I}{eYXh  
int b = temp[r]; 0U~JSmj:2K  
for (i = l, j = r, k = l; k <= r; k++) { ]|(?i ,p  
if (a < b) { RUO6Co-  
data[k] = temp[i++]; y3GIR f;>  
a = temp; !Zx>)V6.  
} else {  7dIDKx  
data[k] = temp[j--]; \:S8mDI^s  
b = temp[j]; =#Jb9=zdR  
} ?Ci\3)u,P  
} m-]"I8 [  
} xCD+qP ^  
kE}I b4]J  
/** 1owoh,V6  
* @param data 6ZJQ '9f  
* @param l &bNj/n/  
* @param i P nDZi  
*/ P*Nl3?T  
private void insertSort(int[] data, int start, int len) { %-.GyG$i  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); C2T,1=  
} )c_ll;%  
} _\zf XHp  
} JKGZ0yn  
} 9:>vl0  
yo=d"*E4^  
堆排序: mbK$Wp#  
2 r)c?  
package org.rut.util.algorithm.support; 3]Mx,u  
zjS<e XLs[  
import org.rut.util.algorithm.SortUtil; EWi@1PAZK  
:yeTzIz]  
/** ?T&D@Ohsx  
* @author treeroot nNr3'6lz  
* @since 2006-2-2 BH1To&ol  
* @version 1.0 Kk#@8h>  
*/ )sr]}S0  
public class HeapSort implements SortUtil.Sort{  Qy%/+9L  
:A[/;|&  
/* (non-Javadoc) sQ$FtKm6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pD9c%P  
*/ +J}M$e Q  
public void sort(int[] data) { 8,Z0J  
MaxHeap h=new MaxHeap(); 6Xa2A 6  
h.init(data); ))vwofkw4  
for(int i=0;i h.remove(); l%O-c}X  
System.arraycopy(h.queue,1,data,0,data.length); 3`y:W9!u  
} iJK9-k~  
I <7K^j+5:  
private static class MaxHeap{ jdzV&  
}\F>z  
void init(int[] data){ \GN5Sy]r  
this.queue=new int[data.length+1]; JqO( ]*"Hi  
for(int i=0;i queue[++size]=data; $i hI Hl6'  
fixUp(size); C%&7,F7  
} ) )Nc|`  
} 0#ph1a<  
>_".  
private int size=0; 5VN4A<))  
"#()4.9  
private int[] queue; ^/,s$dj  
Us<lWEX;k  
public int get() { XN Y(@  
return queue[1]; * HVO  
} a ]*^uEs  
x+&&[>-P  
public void remove() { oj/tim  
SortUtil.swap(queue,1,size--); xFJ>s-g*  
fixDown(1); hf '3yEm  
} X$aMf &x  
file://fixdown )c*~Y=f  
private void fixDown(int k) { <5.{+!BM  
int j; ` mi!"pmw  
while ((j = k << 1) <= size) { m-:k]9I  
if (j < size %26amp;%26amp; queue[j] j++; Oj2[(7 mO/  
if (queue[k]>queue[j]) file://不用交换 TCYnErqk  
break; (]JJ?aAF  
SortUtil.swap(queue,j,k); %+.]>''a  
k = j; S'WmPv  
} SaNx;xgi  
} $]vR,E  
private void fixUp(int k) { {>:2Ff]O:  
while (k > 1) { J]%P fWV  
int j = k >> 1; `U1"WcN  
if (queue[j]>queue[k]) 3ySnAAG  
break; 3+Q6<MS q  
SortUtil.swap(queue,j,k); IRQ(/:]  
k = j; k $);<= ZI  
} `>V.}K^4  
} ZE9*i}r  
OygYP  
} F'K{=  
1)%o:Xy o  
} 9}4L 8?2  
qIk6S6  
SortUtil: BdceINI  
$6_J` 7  
package org.rut.util.algorithm; \6N\6=t!A  
?TXFOr]g]2  
import org.rut.util.algorithm.support.BubbleSort; b x@CzXre;  
import org.rut.util.algorithm.support.HeapSort; e'jR<ln|  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2`z+_DA  
import org.rut.util.algorithm.support.ImprovedQuickSort; -*WD.|k  
import org.rut.util.algorithm.support.InsertSort; &,\S<B2.  
import org.rut.util.algorithm.support.MergeSort; U;^{uQJ+,  
import org.rut.util.algorithm.support.QuickSort; 3RD Q{&J:  
import org.rut.util.algorithm.support.SelectionSort; `@ObM[0p(  
import org.rut.util.algorithm.support.ShellSort; {>i'Pb0mG|  
v4&*iT  
/** 5W'T7asOh  
* @author treeroot Mfgd;FsX#  
* @since 2006-2-2 7S Qu  
* @version 1.0 B!5gD   
*/ r4-r z+x  
public class SortUtil { @a~K#Bvlm  
public final static int INSERT = 1; h_cZ&P|  
public final static int BUBBLE = 2; 0I.7I#'3O  
public final static int SELECTION = 3; xGA%/dy,;  
public final static int SHELL = 4; 1.uyu  
public final static int QUICK = 5; 1*a2s2G '  
public final static int IMPROVED_QUICK = 6; w<'mV^S  
public final static int MERGE = 7; |h3 YL!  
public final static int IMPROVED_MERGE = 8; V7&L+]!  
public final static int HEAP = 9; J sH9IK:  
JeO(sj$e  
public static void sort(int[] data) { )qKfTt N`  
sort(data, IMPROVED_QUICK); n>@(gDq  
} L 0|u^J  
private static String[] name={ rR7}SEa  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" m1(rAr1  
}; 2sXWeiJy;  
)'qZ6%  
private static Sort[] impl=new Sort[]{ s^ 6S{XJ  
new InsertSort(), +>s[w{Svy  
new BubbleSort(), K <0ItN v  
new SelectionSort(), p1Els /|  
new ShellSort(), WUHijHo5(8  
new QuickSort(), UE(%R1Py  
new ImprovedQuickSort(), 9@!`,Co  
new MergeSort(), b&!X#3(KT  
new ImprovedMergeSort(), $idYG<],  
new HeapSort() @)1u  
}; Kj'uTEM  
s Ce{V*ua  
public static String toString(int algorithm){ HK}C<gg  
return name[algorithm-1]; M[X& Q  
} ,fL*yn  
i |C'_gw`n  
public static void sort(int[] data, int algorithm) { @P% &Dha  
impl[algorithm-1].sort(data); S3 &L  
} TEY%OI zU+  
M*t{?o/t;  
public static interface Sort { RhYf+?2  
public void sort(int[] data); nlJxF5/  
} s:Memvf  
<Q%\ pAP}b  
public static void swap(int[] data, int i, int j) { $oh}!Smt  
int temp = data; {| Tl3  
data = data[j]; D].1X0^hp  
data[j] = temp; w,^!kO0)~8  
} _PJd1P.k  
} b,s T[!X[  
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