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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。 iC32nY?  
插入排序: Y_IF;V\  
YUD`!C  
package org.rut.util.algorithm.support; jXx<`I+]  
Yui3+}Ms  
import org.rut.util.algorithm.SortUtil; rQs)O<jl  
/** 8 +/rlHp  
* @author treeroot (0r3/t?DQ  
* @since 2006-2-2 O, wJR  
* @version 1.0 K(rWNO  
*/ _ QI\  
public class InsertSort implements SortUtil.Sort{ n1t*sk/J  
Tbih+# ?  
/* (non-Javadoc) CS5?Ti6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'RR~7h  
*/ (,Q7@s  
public void sort(int[] data) { ;-lXU0}&  
int temp; z&)A,ryW0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); . B9iLI  
} LVfF[  
} Oh`69 k  
} %QGC8Tz  
m+R[#GE8#  
}  .Wj;%|  
gQg"j)  
冒泡排序: py!|\00}  
5"@*?X K^  
package org.rut.util.algorithm.support; wLH>:yKUU  
bKY7/w<dP  
import org.rut.util.algorithm.SortUtil; gIa+5\qYY  
)3}9K ^jS  
/** ZR B)uA)5=  
* @author treeroot nI-w}NQ  
* @since 2006-2-2 g" DG]/ev  
* @version 1.0 *boR`[Ond  
*/ mt{nm[D!Xp  
public class BubbleSort implements SortUtil.Sort{ KIf dafRL  
gMmaK0uhS  
/* (non-Javadoc) - t'jNR'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y'S%O/$  
*/ - q1?? u  
public void sort(int[] data) { @Z %ivR:  
int temp; ,X-bJA@(  
for(int i=0;i for(int j=data.length-1;j>i;j--){ F=e8IUr  
if(data[j] SortUtil.swap(data,j,j-1); 2!m/  
} IGQaDFr  
} 4#xDgxg\f  
} jyUjlYAAv`  
} 9igiZmM  
3g,`.I_  
} dI(@ZV{  
:Zbg9`d*  
选择排序: jh%Eq+#S  
x(6SG+Kr  
package org.rut.util.algorithm.support; KNvZm;Q6  
gnOt+W8  
import org.rut.util.algorithm.SortUtil; @ $ ;q ;  
5|j<`()H :  
/** >}8j+t&T  
* @author treeroot Lv;^My  
* @since 2006-2-2 %KhI>O<  
* @version 1.0 36Zf^cFJ  
*/ 9@(PWz=`?  
public class SelectionSort implements SortUtil.Sort { /sx&=[ D  
JN-y)L/>  
/* (AaoCa[  
* (non-Javadoc) RQ'9m^  
* x.!V^HQSN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZF9z~9  
*/ ]?kZni8j_  
public void sort(int[] data) { 2\MT;;ZTZ  
int temp; {j?FNOJn  
for (int i = 0; i < data.length; i++) { xQ-<WF1i  
int lowIndex = i; B$fPgW-  
for (int j = data.length - 1; j > i; j--) { u<tbbKM  
if (data[j] < data[lowIndex]) { yy^q2P  
lowIndex = j; '4+ ur`  
} -hGk?_Nqa/  
} 6 l|DU7i  
SortUtil.swap(data,i,lowIndex); 9k '7832u  
} 30#s aGV  
} /tx]5`#@7]  
(&F}/s gbi  
} XH4  
%+W{iu[|  
Shell排序: |^"1{7)  
|P HT694Uz  
package org.rut.util.algorithm.support; f;o5=)Y  
eCU:Q  
import org.rut.util.algorithm.SortUtil; "Y =;.:qe  
.PIL +x*]N  
/** TCwFPlF|  
* @author treeroot o4F2%0gJ  
* @since 2006-2-2 s^G.]%iU  
* @version 1.0 3=P]x ;[ba  
*/ 6 6EV$*dRL  
public class ShellSort implements SortUtil.Sort{ NqazpB*  
w7.V6S$Ga  
/* (non-Javadoc) +K:Dx!9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bQg:zww  
*/ Ha0M)0Anv  
public void sort(int[] data) { p J! mw\:  
for(int i=data.length/2;i>2;i/=2){ /!yU !`bY  
for(int j=0;j insertSort(data,j,i); OhQgF  
} %op**@4/t\  
} Q^9_' t}X  
insertSort(data,0,1); )1J R#  
} n`B:;2X,  
Ct<udO  
/** _/s$ZCd  
* @param data *MhRW,=  
* @param j p?%y82E  
* @param i c \J:![x  
*/ Y1W1=Uc uk  
private void insertSort(int[] data, int start, int inc) { qdJ=lhHM}  
int temp; F4-$~ v@  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); TVtvuvQ2K  
} .GP T!lDc  
}  j|DsG,  
} T"}5}6rSG  
X Swl Tg  
} g#pr yYz  
[\98$BN  
快速排序: E!)xj.aS$  
(&Kk7<#`  
package org.rut.util.algorithm.support; 5FPM`hLT  
&v/dj@   
import org.rut.util.algorithm.SortUtil; MO]F1E?X  
6RU~"C  
/** #>("CAB02T  
* @author treeroot ~|D Ut   
* @since 2006-2-2 iJ)_RSFK  
* @version 1.0 9IdA%RM~mH  
*/ \$~|ZwV{  
public class QuickSort implements SortUtil.Sort{ #K_ii)n  
[B*x-R[FI  
/* (non-Javadoc) HTv2#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }<0BX\@I  
*/ }^ ~F|  
public void sort(int[] data) { !I{0 _b{  
quickSort(data,0,data.length-1); @|Cz-J;D  
} hn7# L  
private void quickSort(int[] data,int i,int j){ >W=,j)MA  
int pivotIndex=(i+j)/2; P+ 3G~Sr  
file://swap xf\C|@i  
SortUtil.swap(data,pivotIndex,j); J\} twYty  
I;,77PxD  
int k=partition(data,i-1,j,data[j]); hlvK5Z   
SortUtil.swap(data,k,j); Jc&{`s^Nu  
if((k-i)>1) quickSort(data,i,k-1); Fj8z  
if((j-k)>1) quickSort(data,k+1,j); xA2YG|RU=b  
EqkN3%IG  
} c)6m$5]  
/** fZGX}T<)p-  
* @param data .ljnDL/  
* @param i kUL' 1!j7  
* @param j RtkEGxw*^  
* @return /Y:sLGQLD  
*/ zJKv'>?  
private int partition(int[] data, int l, int r,int pivot) { > ym,{EHK  
do{ P[G)sA_"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kf\PioD8  
SortUtil.swap(data,l,r); Hp|kQJ[LE  
} b"<liGh"n-  
while(l SortUtil.swap(data,l,r); #X+JHl  
return l; T8?Ghbn  
} 5 Aw"B  
;RZ )  
} Di,^%  
P8OaoPj  
改进后的快速排序: :;%2BSgFU  
K C*e/J  
package org.rut.util.algorithm.support; y;m|  
i<C*j4qQ  
import org.rut.util.algorithm.SortUtil; UP$.+<vm  
w8")w*9Lmg  
/** 9d0@wq.  
* @author treeroot =g7x' kN  
* @since 2006-2-2 G{As,`{  
* @version 1.0 ih-#5M@  
*/ gMi0FO'  
public class ImprovedQuickSort implements SortUtil.Sort { //up5R_nx  
ozyX$tp  
private static int MAX_STACK_SIZE=4096; <`8n^m*  
private static int THRESHOLD=10; { T/[cu<  
/* (non-Javadoc) T= 80,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f=l rg KE  
*/ nmee 'oEw  
public void sort(int[] data) { |"q5sym8Y_  
int[] stack=new int[MAX_STACK_SIZE]; {LI=:xJJv  
rm'SOJVA  
int top=-1; np|Sy;:  
int pivot; f=+mIZ  
int pivotIndex,l,r; JMCKcZ%N  
&~cBNw|  
stack[++top]=0; WMDl=6  
stack[++top]=data.length-1; gi3F` m  
/cUO$m o  
while(top>0){ @W.S6;GA\  
int j=stack[top--]; d(ZO6Nr Q  
int i=stack[top--]; ^`i#$  
z#9aP&8Q  
pivotIndex=(i+j)/2;  h},IF  
pivot=data[pivotIndex];  Po+.&7F  
X;+sUj8  
SortUtil.swap(data,pivotIndex,j); %_H<:uGO%  
pHGYQ;:L  
file://partition B B{$&Oh  
l=i-1; d"1]4.c  
r=j; V5@:#BIs  
do{ +uF>2b6'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -u+vJ6EY  
SortUtil.swap(data,l,r); Gm&Za,4%4  
} s2p\]|5  
while(l SortUtil.swap(data,l,r); l ~"^7H?4e  
SortUtil.swap(data,l,j); 3GYw+%Z]  
nAAs{  
if((l-i)>THRESHOLD){ {f_={k  
stack[++top]=i; 7DogM".}~Q  
stack[++top]=l-1; 5+4IN5o]=  
} >a<.mU|#  
if((j-l)>THRESHOLD){ LG9+GszX 2  
stack[++top]=l+1; VcE:G#]5  
stack[++top]=j; JJ-( Sl  
} UkwP  
*}qWj_RT  
} sPpH*,(  
file://new InsertSort().sort(data); 3Y4?CM&0v  
insertSort(data); 5+0gR &|j  
} LtF,kAIt7v  
/** #FLb*%Nr  
* @param data @}u*|P*  
*/ dA}-]  
private void insertSort(int[] data) { x M/+L:_<  
int temp; #b}Z`u?@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _IHV7*u{;  
} :1Xz4wkWS*  
} >0y'Rgfe  
} ;3coP{  
wYXQlxdy  
} :wyno#8`-  
Vi$~-6n&  
归并排序: i$"F{|Z0  
BN5[,J  
package org.rut.util.algorithm.support; %bn jgy  
h|9L5  
import org.rut.util.algorithm.SortUtil;  M mj;-u  
|*eZD-f  
/** S"QWB`W2  
* @author treeroot Pl06:g2I  
* @since 2006-2-2 se2!N:|R!G  
* @version 1.0 1p3z1_wrs  
*/ V*;(kEqj  
public class MergeSort implements SortUtil.Sort{ |-67 \p]  
np^N8$i:n  
/* (non-Javadoc) :as$4|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .WJ YQi  
*/ kPG-hD  
public void sort(int[] data) { `:fZ)$sY  
int[] temp=new int[data.length];  :A_@,Q  
mergeSort(data,temp,0,data.length-1); ,Ks8*;#r  
} \~mT] '5  
LKB$,pR~1l  
private void mergeSort(int[] data,int[] temp,int l,int r){ Y=?3 js?O  
int mid=(l+r)/2; cGzPI +F  
if(l==r) return ; OX0%C.K)hZ  
mergeSort(data,temp,l,mid); i v38p%Zm  
mergeSort(data,temp,mid+1,r); :uS\3toj  
for(int i=l;i<=r;i++){ =U9*'EFr  
temp=data; &vMb_;~B  
} 3AtGy'NTp  
int i1=l; r.&Vw|*>  
int i2=mid+1; [#vH'y  
for(int cur=l;cur<=r;cur++){ YQvD|x  
if(i1==mid+1) h 0Q5-EA  
data[cur]=temp[i2++]; 9d659i C  
else if(i2>r) ^98~U\ar  
data[cur]=temp[i1++]; Tn e4  
else if(temp[i1] data[cur]=temp[i1++]; qOtgve`jX  
else :6 R\OeH+  
data[cur]=temp[i2++]; `wEb<H  
} 20h, ^  
} '3fu  
s?}e^/"v  
} H[$"+&q  
;7V%#-  
改进后的归并排序: L|7R9+ZG  
]y '>=a|T  
package org.rut.util.algorithm.support; ^A/k)x6  
g3/W=~r  
import org.rut.util.algorithm.SortUtil; 83\pZ1>)_  
} 9Eg=%0v  
/** B%b4v  
* @author treeroot u'DRN,h+  
* @since 2006-2-2 xGg )Y#  
* @version 1.0 F^BS/Yag  
*/ 5coyr`7mP  
public class ImprovedMergeSort implements SortUtil.Sort { }!r|1$,kL  
\'D0'\:vz  
private static final int THRESHOLD = 10; @o _}g !9=  
mR:uj2*  
/* Ya"a`ozq  
* (non-Javadoc) =s2*H8]  
* osAd1<EIC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f}f9@>.  
*/ >*_$]E  
public void sort(int[] data) { S`0(*A[W*  
int[] temp=new int[data.length]; Jhhb7uU+  
mergeSort(data,temp,0,data.length-1); 7,o7Cf2z  
} IfAZn_  
5x4yyb'  
private void mergeSort(int[] data, int[] temp, int l, int r) { 24*XL,  
int i, j, k; pJ"qu,w  
int mid = (l + r) / 2; IueFx u  
if (l == r) )23H1  
return; W+?4jwqw  
if ((mid - l) >= THRESHOLD) Ckuh:bs  
mergeSort(data, temp, l, mid); <uw9DU7G  
else 7' V@+5  
insertSort(data, l, mid - l + 1); ZDYJ\}=  
if ((r - mid) > THRESHOLD) EgCAsSx(  
mergeSort(data, temp, mid + 1, r); .jE{3^  
else m@v\(rT.  
insertSort(data, mid + 1, r - mid); k"zv~`i'  
)U:m:cr<  
for (i = l; i <= mid; i++) { SsDmoEeB[  
temp = data; qi D@'Va\  
} k2tF}  
for (j = 1; j <= r - mid; j++) { @9RM9zK.q  
temp[r - j + 1] = data[j + mid]; {qJ1ko)$  
} L+i=VGm0  
int a = temp[l]; BG]#o| KW  
int b = temp[r]; ?X<eV1a   
for (i = l, j = r, k = l; k <= r; k++) { Zt{[ *~  
if (a < b) { L48_96  
data[k] = temp[i++]; Hd ={CFip  
a = temp; A[{yCn`tM  
} else { CxW>~O:  
data[k] = temp[j--]; ^%{7}g&$u  
b = temp[j]; T_5H&;a  
} =K[yT:  
} "e>;'%W  
} P{>!5|k  
>jLY"  
/** O-hAFKx  
* @param data @:vwb\azVD  
* @param l `kXs;T6&  
* @param i ]Q3ADh  
*/ \?k'4rH  
private void insertSort(int[] data, int start, int len) { %XQ(fj>  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); #r\4sVg  
} .|fH y  
} 4!yzsPJL  
} `mJ6K&t$<  
} j>"@,B g*  
J<h $ wM  
堆排序: 5e^ChK0Q  
D'Df JwA  
package org.rut.util.algorithm.support; v$wIm,j  
;'@9[N9  
import org.rut.util.algorithm.SortUtil; 0=1T.4+=  
m&,(Jla  
/** `d`T*_  
* @author treeroot ^Y \"}D  
* @since 2006-2-2 d^ 8ZeC#  
* @version 1.0 N<VJ(20y  
*/ y??XIsF  
public class HeapSort implements SortUtil.Sort{ x g  
vXZOy%$o  
/* (non-Javadoc) '_FsvHQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f46t9dxp$  
*/ PKiy5D*8p  
public void sort(int[] data) { =-n}[Y}A  
MaxHeap h=new MaxHeap(); nmKp[-5  
h.init(data); 9qzHS~l  
for(int i=0;i h.remove(); 0 /U{p,r6`  
System.arraycopy(h.queue,1,data,0,data.length); Kis"L(C  
} yWo; a  
I1M%J@Cz  
private static class MaxHeap{ [waIi3Dv\  
`b7t4d*  
void init(int[] data){ ?IT*: A] E  
this.queue=new int[data.length+1]; v PG},m~-  
for(int i=0;i queue[++size]=data; hhc,uJ">!  
fixUp(size); R-d:j^:f  
} o]oum,Q  
} u\;C;I-? '  
3;]H1 1  
private int size=0; F{;((VboN  
+VOK%8,p  
private int[] queue; BUXpC xQ  
JP [K;/  
public int get() { y}ev ,j  
return queue[1]; c4eBt))}V  
} T+H!_ky`A  
.4!=p*Y  
public void remove() { `Eo.v#<  
SortUtil.swap(queue,1,size--); Bn&ze.F  
fixDown(1); n9ej7oj  
} Z,Dl` w  
file://fixdown M!D3}JRm  
private void fixDown(int k) { wjB:5~n50k  
int j; .|i.Cq8  
while ((j = k << 1) <= size) { f(y:G^V  
if (j < size %26amp;%26amp; queue[j] j++; S3 Xl  
if (queue[k]>queue[j]) file://不用交换 ],Do6 @M-  
break; ope^~+c~\  
SortUtil.swap(queue,j,k); ~dTrf>R8M  
k = j; z_4J)?3  
} e8?jmN`2  
} l}A93jSL  
private void fixUp(int k) { M&9+6e'-F  
while (k > 1) { 60?%<oJ oH  
int j = k >> 1; T!)(Dv8@F  
if (queue[j]>queue[k]) {q^[a-h>  
break; i2SR{e8:GF  
SortUtil.swap(queue,j,k); H9Q&tl9  
k = j; O5T{eBo\  
} p}U ~+:v  
} Yufc{M00  
$suzW;{#  
} -;WGS o  
B>P{A7Q  
} )R1<N  
^RIl  
SortUtil: 0[W:d=C`a  
U26}gT)  
package org.rut.util.algorithm; 5vnrA'BhBU  
4zFW-yy  
import org.rut.util.algorithm.support.BubbleSort; @?]RBX?a  
import org.rut.util.algorithm.support.HeapSort; A;?|& `f  
import org.rut.util.algorithm.support.ImprovedMergeSort; RPL:-  
import org.rut.util.algorithm.support.ImprovedQuickSort; P.9>z7l{  
import org.rut.util.algorithm.support.InsertSort; lA8`l>I  
import org.rut.util.algorithm.support.MergeSort; ]Gq !`O1  
import org.rut.util.algorithm.support.QuickSort; ml }{|Yz  
import org.rut.util.algorithm.support.SelectionSort; A_q3KB!$=+  
import org.rut.util.algorithm.support.ShellSort; U9MxI%tb  
((M>s&\y*Y  
/** AFE~ v\Gz  
* @author treeroot d<P\&!R(  
* @since 2006-2-2 NyNXP_8  
* @version 1.0 ' %o#q6O  
*/ :& ."ttf=  
public class SortUtil { 8[{ Vu0R  
public final static int INSERT = 1; @GW #&\yM  
public final static int BUBBLE = 2; g}(L;fy>7  
public final static int SELECTION = 3; !%%6dB@%t  
public final static int SHELL = 4; Se =`N  
public final static int QUICK = 5; *VxgARIL  
public final static int IMPROVED_QUICK = 6; i?^L/b`H  
public final static int MERGE = 7; =U?dbSf1*  
public final static int IMPROVED_MERGE = 8; j/?kL{B  
public final static int HEAP = 9; X$W~mQma6  
fVpMx4&F   
public static void sort(int[] data) { u;2[AQ.  
sort(data, IMPROVED_QUICK); #!+:!_45  
} 3L}A3de'  
private static String[] name={ St*h>V6  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" V)N%WX G  
}; kc&U'&RgY  
\(2sW^fY  
private static Sort[] impl=new Sort[]{ sD#.Oq4&]y  
new InsertSort(), .U]-j\  
new BubbleSort(), 49HZ2`Y  
new SelectionSort(), pIqeXY  
new ShellSort(), c'yxWZEv  
new QuickSort(), C1 *v,i  
new ImprovedQuickSort(), r3UUlR/Do  
new MergeSort(), 1/J=uH  
new ImprovedMergeSort(), t;\Y{`  
new HeapSort() 7WZ+T"O{I  
}; ePo}y])2  
gc$l^`+M  
public static String toString(int algorithm){ O3kA;[f;  
return name[algorithm-1]; hM@>q&q_  
} X45%e!  
`3&v6  
public static void sort(int[] data, int algorithm) { r mg}N  
impl[algorithm-1].sort(data); 7J<5f)  
} -e:`|(Mo  
Z/+#pWBI!  
public static interface Sort { 6(ol1 (U  
public void sort(int[] data); oYH-wQj  
} C]A.i2o8  
DN:EB @  
public static void swap(int[] data, int i, int j) { \ }G> 8^  
int temp = data; k;FUs[  
data = data[j]; 3)ywX&4"L  
data[j] = temp; ^k9I(f^c-_  
} {3aua:q  
} -ZLJeY L  
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