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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。 [-hsG E  
插入排序: cdv0:+[P  
^o[(F<q  
package org.rut.util.algorithm.support; I6Oc`S!L  
0GcOI}  
import org.rut.util.algorithm.SortUtil; ?1]h5Uh[b  
/**  Wo,fHY  
* @author treeroot nq*D91Q  
* @since 2006-2-2 g]PC6xr38  
* @version 1.0 Df}3^J~JX  
*/ [w}KjV/yi  
public class InsertSort implements SortUtil.Sort{ s>a(#6Q  
0:zDt~Ju  
/* (non-Javadoc) SVi{B*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f"d4HZD^  
*/ 8RJa;JsH  
public void sort(int[] data) { T%@qlEmf  
int temp; |K'7BK_^J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D)J'xG_<O  
} f=Kt[|%'e  
} 10ZL-7D#m  
} mO @Sl(9  
VRvX^w0  
} vve[.Lud'  
F=V_ACU  
冒泡排序: JA "  
}EJ't io]  
package org.rut.util.algorithm.support; l/6(V:  
]3~X!(O  
import org.rut.util.algorithm.SortUtil; 1*]@1DJt  
r=ht:+m  
/** cE3V0voSw1  
* @author treeroot ? W2W y\  
* @since 2006-2-2 r&O:Bt}x  
* @version 1.0 rB-}<22.  
*/ skBzwVW I  
public class BubbleSort implements SortUtil.Sort{ ; d :i  
7=@Mn F`  
/* (non-Javadoc) +KHk`2{y~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  2D"\Ox  
*/ -"w&g0Z  
public void sort(int[] data) { J85Kgd1 \a  
int temp; W%P0X5YQ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !K/zFYl  
if(data[j] SortUtil.swap(data,j,j-1); z1~FE  
} Y[`%j\=  
} m^Rf6O^  
} jWerX -$  
} SkMBdkS9z[  
IjrjLp[z$  
} V>B*_J,z.  
Y%YPR=j~ &  
选择排序: |3uE"\nfA  
e(EXQP2P>  
package org.rut.util.algorithm.support; Jk=d5B  
E@S5|CM  
import org.rut.util.algorithm.SortUtil; )jaNFJ 3  
O<`\9  
/** 4e9'yi  
* @author treeroot !_LRuqQ?"  
* @since 2006-2-2 TDjjaO  
* @version 1.0  -TKQfd  
*/ DX4"}w  
public class SelectionSort implements SortUtil.Sort { he1OLk  
I,YP{H4  
/* U\`H0'  
* (non-Javadoc) JnBg;D|)@  
* 2F fwct:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e!|T Tap  
*/ 6>; dJV  
public void sort(int[] data) { cT,5xp"a  
int temp; Odj4)   
for (int i = 0; i < data.length; i++) { ]QK@zb}x  
int lowIndex = i; 9lCZ i?  
for (int j = data.length - 1; j > i; j--) { ,L,?xvWG  
if (data[j] < data[lowIndex]) { zFGZ;?i  
lowIndex = j; parc\]M  
} "\u_gk{g  
} qaN%&K9F8  
SortUtil.swap(data,i,lowIndex); U0t~H{-H  
} qra5&Fvb  
} >aV Q  
^q ?xi5 w  
} >XiTl;UU  
SSG}'W!z  
Shell排序: mtu`m6Xix  
a]u1_ $)  
package org.rut.util.algorithm.support; vW:XM0  
b|z_1j6U  
import org.rut.util.algorithm.SortUtil; dr8`;$;G*  
ILq"/S.  
/** ~i)IY1m"  
* @author treeroot vTF_`X  
* @since 2006-2-2 ;*_U)th  
* @version 1.0 84$#!=v  
*/ om'DaG`A  
public class ShellSort implements SortUtil.Sort{ +:fr(s!OE  
rezH5d6z62  
/* (non-Javadoc) 7Yrp#u1!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H3Z"u  
*/ d)X6x-(  
public void sort(int[] data) { <xWBS/K  
for(int i=data.length/2;i>2;i/=2){ CUo %i/R  
for(int j=0;j insertSort(data,j,i); 9x0Ao*D<t  
} 60u}iiC@  
} msiftP.  
insertSort(data,0,1); k4ijWo{:0  
} *K1GX  
=2yg:D  
/** _N-JRM m<  
* @param data iSz?V$}?  
* @param j 'aoHNZfxw  
* @param i qf2;yRc&  
*/  'WW['  
private void insertSort(int[] data, int start, int inc) { .^J7^ Ky,  
int temp; t!"XQ$g'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R^=)Ucj  
} |:?JSi0  
} (Mw<E<f  
} z|gG%fM  
>nL9%W}8M  
} eVYUJ,  
^?3e?Q?  
快速排序: ird q51{G  
 Py)'%e  
package org.rut.util.algorithm.support; >^Zyls  
)~X*&(7RR}  
import org.rut.util.algorithm.SortUtil; >v DD.  
'<YVDB&-d,  
/** _(<D*V[  
* @author treeroot pWwB<F  
* @since 2006-2-2 bl)iji`]  
* @version 1.0 ~!w()v n  
*/ '"=Mw;p  
public class QuickSort implements SortUtil.Sort{ m%hUvG| i  
J0hY~B~X  
/* (non-Javadoc) Q*+_%n1 /  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8VwByk8  
*/ .RNr^*AQ  
public void sort(int[] data) { *&vySyt  
quickSort(data,0,data.length-1); ul',!js?  
} aTceGyWzl  
private void quickSort(int[] data,int i,int j){ +AT!IZrB2i  
int pivotIndex=(i+j)/2; %7$oig\wE  
file://swap DNy1} 3wg  
SortUtil.swap(data,pivotIndex,j); |# zznT"  
+I?T|Iin  
int k=partition(data,i-1,j,data[j]); mne=9/sE"  
SortUtil.swap(data,k,j); n?QpVROo\  
if((k-i)>1) quickSort(data,i,k-1); E Fx@O  
if((j-k)>1) quickSort(data,k+1,j); y ~ A]  
DfCo=  
} W*xz 0  
/** nFn@Z'T$N  
* @param data +r+H`cT@  
* @param i b7:B[7yK.x  
* @param j ms%Ot:uA  
* @return o9:GKc  
*/ T F!Lp:  
private int partition(int[] data, int l, int r,int pivot) { IJ%S[>  
do{ U-$ B"w&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l|[8'*]r!  
SortUtil.swap(data,l,r); #]yb;L  
} ZZa$/q"  
while(l SortUtil.swap(data,l,r); 9 xvE?8;M#  
return l; q1nGj  
} 'ErtiD  
(\si/&  
} fU+A~oL%I  
.g7ebh6D  
改进后的快速排序: `NC{+A  
p[QF3)9F  
package org.rut.util.algorithm.support; nJTV@m XVq  
.>-`2B*/  
import org.rut.util.algorithm.SortUtil; c0Tda  
U+!H/R)(  
/** R,hX *yVq  
* @author treeroot 2S1wL<qP  
* @since 2006-2-2 xi6Fs, 2S  
* @version 1.0 -L/5Nbup  
*/ Sdc;jK 9d!  
public class ImprovedQuickSort implements SortUtil.Sort { }{^i*T5rl  
z/7H/~d  
private static int MAX_STACK_SIZE=4096; 1R/=as,R  
private static int THRESHOLD=10; -4JdK O  
/* (non-Javadoc) =W9;rQm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k!]Tg"]JAh  
*/ wR;_x x  
public void sort(int[] data) { T x_n$ &  
int[] stack=new int[MAX_STACK_SIZE]; P]Z}% 8^O  
vXnTPjbE  
int top=-1; ;X u&['  
int pivot; )T6+}   
int pivotIndex,l,r; Riq5Au?*)  
I3xx}^V  
stack[++top]=0; :8;8-c  
stack[++top]=data.length-1; `@{qnCNQ  
A$RN7#  
while(top>0){ Ms*;?qtrR  
int j=stack[top--]; *xs8/?  
int i=stack[top--]; ~BVg#_P  
7 :s6W%W1*  
pivotIndex=(i+j)/2; <3;/,>^ Pm  
pivot=data[pivotIndex]; #gOITXKs  
0\AYUa?RM  
SortUtil.swap(data,pivotIndex,j); B@]( ,  
L4aT=of-  
file://partition I\sCH  
l=i-1; (r,RwWYm  
r=j; #jV6w=I  
do{ Mi\f?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); S8" h9|  
SortUtil.swap(data,l,r); EX8:B.z`57  
} J#CF SG  
while(l SortUtil.swap(data,l,r); t=~5 I >  
SortUtil.swap(data,l,j); nTj Q4y  
.1MXQLy  
if((l-i)>THRESHOLD){ |pr~Ohz  
stack[++top]=i; 0[0</"K%1m  
stack[++top]=l-1; ^HKxaW9W  
} `3r*Ae  
if((j-l)>THRESHOLD){ p&bQ_XOH  
stack[++top]=l+1; {S\cpCI`  
stack[++top]=j; C+}uH:I'L  
} J3Q.6e=7  
SSi}1  
} (@`+Le  
file://new InsertSort().sort(data); *#EyfMz-B  
insertSort(data); !.iA^D//]  
} * Yov>lO  
/** >k^=+  
* @param data )zt*am;  
*/ 52*zX 3  
private void insertSort(int[] data) { 8(%iYs$  
int temp; W"|89\p}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FFtj5e  
} z@&_3 Gl  
} R\yw9!ESd  
} ms3Ec`i9  
vVKiE 6^  
} 1O9V Ej5  
e )\s0#  
归并排序:  ~J"*ahl  
jKQnox+=  
package org.rut.util.algorithm.support; T:wd3^.CG  
eUqsvF}l!  
import org.rut.util.algorithm.SortUtil; &cDnZ3Q;  
pz?.(AmU\  
/** Q=~e|  
* @author treeroot Oa7`Y`6  
* @since 2006-2-2 L4S Fu.J'  
* @version 1.0 ~&k1P:#R  
*/ _}`iLA!$I  
public class MergeSort implements SortUtil.Sort{ \I#2Mq?  
LtH;#Q  
/* (non-Javadoc) XXmtpM8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Aye!@RjM8  
*/ p%J,af  
public void sort(int[] data) { G?=X!up(  
int[] temp=new int[data.length]; hig^ovF  
mergeSort(data,temp,0,data.length-1); +t/ VF(!  
} tTF/$`Q#*  
~|Gtm[9Ru  
private void mergeSort(int[] data,int[] temp,int l,int r){ e|AJxn]  
int mid=(l+r)/2; j4H,*fc  
if(l==r) return ; )F]E[sga  
mergeSort(data,temp,l,mid); |? ?uVA)\X  
mergeSort(data,temp,mid+1,r); 5`6@CRef  
for(int i=l;i<=r;i++){ 2#6yO`?uo  
temp=data; b)$<aFl  
} E[2c`XFd8  
int i1=l; &OGY?[n  
int i2=mid+1; v.\1-Q?  
for(int cur=l;cur<=r;cur++){ bbiDY  
if(i1==mid+1) $}W=O:L+D  
data[cur]=temp[i2++]; =wU08}  
else if(i2>r) nd_d tsp#  
data[cur]=temp[i1++]; GR O[&;d`  
else if(temp[i1] data[cur]=temp[i1++]; +n^$4f  
else Y'bDEdeT  
data[cur]=temp[i2++]; &bs/a] ?Z7  
} ?K I_>{  
} 6/s#'#jh  
R S;r  
} .\{GU9|nO  
aQ]C`9k  
改进后的归并排序: gjvKrg  
vlm&)DIt  
package org.rut.util.algorithm.support; "-A@>*g  
RjSVa.x  
import org.rut.util.algorithm.SortUtil; #<4h Y7/  
*Yl9%x]3c  
/** "J%u !~  
* @author treeroot _hAp@? M  
* @since 2006-2-2 OPBnU@=R  
* @version 1.0 q%Obrk  
*/ M<~z=B#  
public class ImprovedMergeSort implements SortUtil.Sort { h+CTi6-p  
,V.X-`Y  
private static final int THRESHOLD = 10; 5sFp+_``  
%@kmuz??  
/* V8`t7[r  
* (non-Javadoc) MPT*[&\-  
* 2m[z4V@`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E]6;nY?  
*/ +<|6y46  
public void sort(int[] data) { I r<5%  
int[] temp=new int[data.length]; e6QUe.S  
mergeSort(data,temp,0,data.length-1); b)3dZ*cOJ  
} <k6Zx-6X<  
wC`])z}bT  
private void mergeSort(int[] data, int[] temp, int l, int r) { -fT]}T6=  
int i, j, k; k[gO>UGB;  
int mid = (l + r) / 2; l`~*" 4|/  
if (l == r) u z4P  
return; 6i(nyA 2!  
if ((mid - l) >= THRESHOLD) B;2os^*  
mergeSort(data, temp, l, mid); # x!47Y{  
else R4]t D|  
insertSort(data, l, mid - l + 1); iZwt,)(  
if ((r - mid) > THRESHOLD) qOV#$dkY  
mergeSort(data, temp, mid + 1, r); ,N?~je.  
else #fRhG^QKp  
insertSort(data, mid + 1, r - mid); 4nXS}bWf  
3!,XR\`[  
for (i = l; i <= mid; i++) { } R;.~F  
temp = data; 3/@7$nV  
} bQr H8)  
for (j = 1; j <= r - mid; j++) { ]j~V0 1p/e  
temp[r - j + 1] = data[j + mid]; 5|9,S  
} SLD%8:Zn  
int a = temp[l]; ]xCJ3.9  
int b = temp[r]; -s,^_p{H  
for (i = l, j = r, k = l; k <= r; k++) { !G 90oW  
if (a < b) { `QnKal)  
data[k] = temp[i++]; uv/I`[@HK8  
a = temp; F(Pe@ #)A  
} else {  .]k+hc`  
data[k] = temp[j--]; C~yfuPr\B  
b = temp[j]; 1*Yf[;L  
} V&eti2 &zO  
} UMma|9l(i  
} Gvb>M=9  
.Xc, Gq{  
/** 9H_2Y%_  
* @param data 8&IsZPq%l  
* @param l (I IPrW;>  
* @param i %r=uS.+hrF  
*/ | Z0?  
private void insertSort(int[] data, int start, int len) { m$ NBGw  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P|!GXkS  
} `kpX}cKK}  
} `M6!V  
} E*:!G  
} 1j`-lD  
M$B9?N6  
堆排序: _*>bf G  
+\fr3@Yc  
package org.rut.util.algorithm.support; E5~HH($b  
t>)iC)^u  
import org.rut.util.algorithm.SortUtil; 'nz;|6uC  
0~iC#lHO  
/** rr>QG<i;G  
* @author treeroot iKnH6} `?U  
* @since 2006-2-2 r`qMif'  
* @version 1.0 w4Qqo(  
*/ [2pp)wq  
public class HeapSort implements SortUtil.Sort{ GvF8S MO[x  
'_lyoVP  
/* (non-Javadoc) zH0%; o}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [ >O4hifq  
*/ 9z$]hl  
public void sort(int[] data) { WS/^WxRY  
MaxHeap h=new MaxHeap(); n#uH^@#0  
h.init(data); J*o :RnB  
for(int i=0;i h.remove(); Wb+^Ue  
System.arraycopy(h.queue,1,data,0,data.length); # =V%S 2~  
} +dX1`%RR[  
6}='/d-[  
private static class MaxHeap{ MUhC6s\F  
w,bILv)  
void init(int[] data){ QM\v ruTB  
this.queue=new int[data.length+1]; D>+&= 5{  
for(int i=0;i queue[++size]=data; iS&~oj_-%  
fixUp(size); jV]'/X<  
} 3FT%.dV^  
} MqGF~h|+  
*;"N kCf  
private int size=0; 7F5 t&  
bW(+Aw=O  
private int[] queue; ,d(F|5 M:  
8/,m8UOY  
public int get() { uSLO"\zysX  
return queue[1]; dIQ7u  
} XKp.]c wP  
"u~l+aW0  
public void remove() { Tf7$PSupP  
SortUtil.swap(queue,1,size--); gcqcY  
fixDown(1); a*REx_gLG  
} ]W7(}~m  
file://fixdown a/;u:"  
private void fixDown(int k) { Y]/(R"-2G  
int j; v_)a=I%o&2  
while ((j = k << 1) <= size) { IMIZ#/  
if (j < size %26amp;%26amp; queue[j] j++; +-&N<U  
if (queue[k]>queue[j]) file://不用交换 ,DK|jf  
break; ;ZHKTOoK  
SortUtil.swap(queue,j,k); "D}PbT[V  
k = j; a\S"d  
} ]:i :QiYD  
} i>HipD,TD  
private void fixUp(int k) { 7 Bm 18  
while (k > 1) { /%EKq+ZP  
int j = k >> 1; >^LVj[.1  
if (queue[j]>queue[k]) D M(WYL{  
break; _P 0,UgZz  
SortUtil.swap(queue,j,k); F, Y@  
k = j; GenkYtS  
} e48`cX\E  
} YLmzMD>  
.281;] =  
} P*oKcq1R  
py`RH )  
} dya]^L}fL  
CB<1]Z  
SortUtil: ZKzXSI4  
:*gYzk8  
package org.rut.util.algorithm; aehGT|  
m(>_C~rGN  
import org.rut.util.algorithm.support.BubbleSort; Xt~`EN  
import org.rut.util.algorithm.support.HeapSort; Rn~FCj,-  
import org.rut.util.algorithm.support.ImprovedMergeSort; vZj^&/F$=g  
import org.rut.util.algorithm.support.ImprovedQuickSort; nv1'iSEeOl  
import org.rut.util.algorithm.support.InsertSort; oJe9H<  
import org.rut.util.algorithm.support.MergeSort; P1;T-.X~&  
import org.rut.util.algorithm.support.QuickSort; g9|B-1[  
import org.rut.util.algorithm.support.SelectionSort; Qna ^Ry?6)  
import org.rut.util.algorithm.support.ShellSort; !-b4@=f:  
,cPNZ-%  
/** rLs)*A!  
* @author treeroot La48M'u  
* @since 2006-2-2 J;h4)w~9H3  
* @version 1.0 Z]DO  
*/ CXks~b3SD  
public class SortUtil { g66=3c9</6  
public final static int INSERT = 1; x^Tjs<#  
public final static int BUBBLE = 2; [?x9NQ{  
public final static int SELECTION = 3; WLW'.  
public final static int SHELL = 4; s|Ls  
public final static int QUICK = 5; @iK=1\-2  
public final static int IMPROVED_QUICK = 6; lA {  
public final static int MERGE = 7; _/bFt6  
public final static int IMPROVED_MERGE = 8; ^0"NcOzzxl  
public final static int HEAP = 9; zqfv|3-!}  
DrLNY"Zq  
public static void sort(int[] data) { }1]/dCv  
sort(data, IMPROVED_QUICK); $T{,3;kt  
} *6^|i}  
private static String[] name={ 3#huC=zbf  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >C y  
}; 0l3v>ty  
9;2PoW8  
private static Sort[] impl=new Sort[]{ s^ rO I~  
new InsertSort(), Nv "R'Pps  
new BubbleSort(), *vv <@+gA  
new SelectionSort(), h=SQ]nV{  
new ShellSort(), 1MHP#X;|  
new QuickSort(), X).UvPZ/  
new ImprovedQuickSort(), 35z]pn%L  
new MergeSort(), w]GoeIg({  
new ImprovedMergeSort(), yi<&'L;   
new HeapSort() r \H+=2E'  
}; Uov%12  
Be}e%Rk  
public static String toString(int algorithm){ v ~.X  
return name[algorithm-1]; . +> w0FG.  
} :,"dno7OQ  
~ ui/Qf2|  
public static void sort(int[] data, int algorithm) { Mf7Q+_!  
impl[algorithm-1].sort(data); ;Q&38qI  
} ozH7c_ <  
W)JUMW2|  
public static interface Sort { 4O_z|K_k|  
public void sort(int[] data); k%E9r'Ac  
} @3KVYv,q  
<q hNX$t  
public static void swap(int[] data, int i, int j) { E0[!jZ:c  
int temp = data; kv&%$cA  
data = data[j]; N ?Jr8  
data[j] = temp; qJ|ByZ.N+  
} [1B F8:  
} J9S9r ir&  
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