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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。 yA_d${n  
插入排序: DUtpd|  
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package org.rut.util.algorithm.support; mB,7YZv  
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import org.rut.util.algorithm.SortUtil; 6` s[PKP.  
/** r*$"]{m}  
* @author treeroot k^L (q\D  
* @since 2006-2-2 jC@^/rMh  
* @version 1.0 Vz,WPm$I  
*/ N,O[pTwj  
public class InsertSort implements SortUtil.Sort{ [J];  
AsLAm#zq  
/* (non-Javadoc) |p+VitM7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +X&B'  
*/ Ry(!< w,  
public void sort(int[] data) { $M8'm1R9  
int temp; B}jZ~/D}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J2R<'(  
} Ug"B/UUFd  
} l5MxJ>?4%B  
} +:t1PV;l  
hb_Ia]b  
} [Cs2H8=#  
}FK6o 6  
冒泡排序: &@Q3CCDS  
f+1]#"9i|  
package org.rut.util.algorithm.support; Nhf!;>  
UO&S6M]v7  
import org.rut.util.algorithm.SortUtil; uaGg8  
Ff,M ~zn  
/** (&B & V  
* @author treeroot b)V[d8IA  
* @since 2006-2-2 MHbRG_zW  
* @version 1.0 w_-{$8|  
*/ :{fsfZXXr  
public class BubbleSort implements SortUtil.Sort{ q4Z \y  
J3'"-,Hv  
/* (non-Javadoc) !1l2KW<be  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dfrq8n]  
*/ !!QMcx_C#/  
public void sort(int[] data) { KW 09qar  
int temp; 5GY%ZRHh  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $""[( d?0  
if(data[j] SortUtil.swap(data,j,j-1); 7!%cKZCY  
} YF"D;.  
} *<UQ/)\  
} 0#q_LB  
} h{! @^Q  
mrJQB I+  
} 5P! ZJ3C  
|9%>R*  
选择排序: "[8](3\v  
~/NA?E-c  
package org.rut.util.algorithm.support; e"b F"L  
-1{N#c/U  
import org.rut.util.algorithm.SortUtil; b2 ),J  
p;p G@Vg  
/** 7e40 }n  
* @author treeroot `)%eU~  
* @since 2006-2-2 )rXP2Z  
* @version 1.0 kxdLJ_  
*/ X23TS`  
public class SelectionSort implements SortUtil.Sort { :?S2s Ne2  
0VbZBLe  
/* qvt~wJf<  
* (non-Javadoc) _ x7Vyy5  
* :4WwCpgz,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y3-P*  
*/ lfGiw^  
public void sort(int[] data) { <Ei|:m  
int temp; We9mkwK7C  
for (int i = 0; i < data.length; i++) { bH= 5[  
int lowIndex = i; `$i`i'S  
for (int j = data.length - 1; j > i; j--) { )jH"6my_  
if (data[j] < data[lowIndex]) { XJQ[aU"[]N  
lowIndex = j; +EpT)FJX  
} J#D!J8KP7  
} |e9}G,1  
SortUtil.swap(data,i,lowIndex); h?TE$&CL?  
} +Q'/c0o  
} :;JJvYIs  
[<%yUy  
} u54+oh|,M  
$;@s  
Shell排序: l"MEX/   
K=~h1qV:  
package org.rut.util.algorithm.support; w,l1&=d  
>N*QK6"=|  
import org.rut.util.algorithm.SortUtil; 4];NX  
h)YqC$A-s  
/** p<![JeV  
* @author treeroot wRuJein#  
* @since 2006-2-2 YsTfv1~z#  
* @version 1.0 zX5p'8-  
*/ X&Mc NO6"  
public class ShellSort implements SortUtil.Sort{ sQ`8L+oY  
O<+C$J|  
/* (non-Javadoc) c XY!b=9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eLt6Hg)s`9  
*/ 1LE8,Gm&  
public void sort(int[] data) { W9u (  
for(int i=data.length/2;i>2;i/=2){ #ucOjdquq  
for(int j=0;j insertSort(data,j,i); <:ZN  
} z cA"\  
} B4{A(-Tc  
insertSort(data,0,1); bg$e80  
} ;%%=G;b9  
8RocObY_W  
/** r` 3)sc  
* @param data 3)T5}_  
* @param j ;hKn$' '  
* @param i MBa/-fD  
*/  ,{.&xJ$  
private void insertSort(int[] data, int start, int inc) { i %z}8GIt'  
int temp; AQFx>:in  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2S/^"IM["  
} 8Mp  
} 6L*y$e"Qc  
} !,1~:*:  
iBc( @EJ  
} u]oS91  
gHm ^@  
快速排序: *D\nsJ*g  
|D^[]*cEH  
package org.rut.util.algorithm.support; 'Oq}BVR&  
V^f'4*~'  
import org.rut.util.algorithm.SortUtil; )kd PAw  
b|xz`wUH0$  
/** {~=[d`t  
* @author treeroot FS20OD  
* @since 2006-2-2 %fxGdzu7.  
* @version 1.0 hup]Jk  
*/ Y@pa+~[{h3  
public class QuickSort implements SortUtil.Sort{ 7#<|``]zNf  
$x 2t0@  
/* (non-Javadoc) EKDv3aFQZ#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6b)1B\p  
*/ myXp]=Sb?  
public void sort(int[] data) { Maq{H`  
quickSort(data,0,data.length-1); 9t)t-t#P;  
} @4&sL](q  
private void quickSort(int[] data,int i,int j){ .Oim7JQ8  
int pivotIndex=(i+j)/2; {UwJg  
file://swap s~TYzfA  
SortUtil.swap(data,pivotIndex,j); AU >d1S.  
gsAcn  
int k=partition(data,i-1,j,data[j]); U"ga0X5  
SortUtil.swap(data,k,j); 3"<{YEj8U  
if((k-i)>1) quickSort(data,i,k-1); O[8Lp?  
if((j-k)>1) quickSort(data,k+1,j); ebQYk$@  
;)o%2#I  
} >u6kT\|^C  
/** iedoL0#  
* @param data D@0eYX4s  
* @param i !Dun<\  
* @param j j7i[z>:Y  
* @return n[{o~VN  
*/ PAqziq.  
private int partition(int[] data, int l, int r,int pivot) { B]kz3FF  
do{ dz7*a {  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]5} =r  
SortUtil.swap(data,l,r); .kBAUkL:  
} 8^HMK$  
while(l SortUtil.swap(data,l,r); ^^)Pv#[3  
return l; {E@@14]g  
} kKCkjA:o##  
y_a~>S  
} id*UTY Tg  
^&.F!  
改进后的快速排序: QPGssQR6  
!WrUr]0IP  
package org.rut.util.algorithm.support; ) I@gy  
y/Nvts2!C  
import org.rut.util.algorithm.SortUtil; 4cs`R+]o  
;B tRDKn  
/** kR'!;}s  
* @author treeroot psYfz)1;  
* @since 2006-2-2 rYc?y  
* @version 1.0 jd~r~.y  
*/ o6svSS  
public class ImprovedQuickSort implements SortUtil.Sort { \24neD4cM@  
Yr[1-Oy/k  
private static int MAX_STACK_SIZE=4096; t6j(9[gGq  
private static int THRESHOLD=10; "ua/65cq9  
/* (non-Javadoc) D?9 =q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [=XsI]B\  
*/ K34y3i_  
public void sort(int[] data) { & {B,m%G  
int[] stack=new int[MAX_STACK_SIZE]; )0/ D Y  
_a c_8m  
int top=-1; Fnr*.k  
int pivot; 3}XUYF;  
int pivotIndex,l,r; A4'v Jk  
"bC8/^  
stack[++top]=0; ?2Bp^3ytJ  
stack[++top]=data.length-1; +-xA/nU.c  
_Z2VS"yH  
while(top>0){ }Z2Y>raA\  
int j=stack[top--]; CM7j^t  
int i=stack[top--]; `Ol*"F.+I  
Is-Kz}4L  
pivotIndex=(i+j)/2; UD"e:O_  
pivot=data[pivotIndex]; h/PWi<R i  
#XNe4#  
SortUtil.swap(data,pivotIndex,j); T|oz_c\e  
9;q@;)'5  
file://partition u\>Ed9^  
l=i-1; w Gw}a[a  
r=j; 011 _(v  
do{ O4( Z%YBe  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tt#M4n@  
SortUtil.swap(data,l,r); Lt=#tu&d  
} Cm>8r5LG  
while(l SortUtil.swap(data,l,r); u},<On  
SortUtil.swap(data,l,j); OHe<U8iu%  
2D&tDX<  
if((l-i)>THRESHOLD){ KWU#Swa`  
stack[++top]=i; 6\'v_A O  
stack[++top]=l-1; >b<br  
} V .$<  
if((j-l)>THRESHOLD){ >WG$!o+R  
stack[++top]=l+1; !*EHr09N7  
stack[++top]=j; # |2w^Kn  
} +-HaYB|p  
`N2zeFG  
} 4uDz=B+8y  
file://new InsertSort().sort(data); c1e7h l  
insertSort(data); U =T[-(:H  
} sL[,J[AN;  
/** t5[{ihv~:  
* @param data hm?-QVRPV  
*/ 9KD2C>d<  
private void insertSort(int[] data) { 7?B]X%  
int temp; BxlpI[yWq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nqy\xK#.^  
} Gz$DsaG  
} wGAN"K:e  
} .(nq"&u-*  
5qB>Song  
} 4*d_2:|u  
hDzKB))<w  
归并排序: sd.:PE <  
,SS@]9A &  
package org.rut.util.algorithm.support; ow%s_yV]R  
A10/"Ec<u  
import org.rut.util.algorithm.SortUtil; j {S\X'?  
Vh4z+JOC  
/** <86upS6  
* @author treeroot 1rT}mm/e;  
* @since 2006-2-2 ym8\q:N(R  
* @version 1.0 ; #e-pkV  
*/ r'k-*I  
public class MergeSort implements SortUtil.Sort{ !dSY?1>U<  
f4]nz:2  
/* (non-Javadoc) ^MDBJ0 I.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dy0cA| E  
*/ JzCfs<D  
public void sort(int[] data) { z`m-Ca>6  
int[] temp=new int[data.length]; H&`p9d*(e  
mergeSort(data,temp,0,data.length-1); 4s.wQ2m  
} X-6Se  
=-`X61];M  
private void mergeSort(int[] data,int[] temp,int l,int r){ \Qz>us=G  
int mid=(l+r)/2; p*n$iroy_{  
if(l==r) return ; V'\4sPt  
mergeSort(data,temp,l,mid); e2k!5O S  
mergeSort(data,temp,mid+1,r); _sJp"4?  
for(int i=l;i<=r;i++){ 3-~_F*%ST  
temp=data; ]:Ocu--  
} )xlNj$(x5n  
int i1=l; '+Ts IJh  
int i2=mid+1; C&K%Q3V  
for(int cur=l;cur<=r;cur++){ rh/3N8[6  
if(i1==mid+1) XNd:x {  
data[cur]=temp[i2++]; ayHI(4!$j  
else if(i2>r) |]Pigi7y-  
data[cur]=temp[i1++]; #li;L  
else if(temp[i1] data[cur]=temp[i1++]; "EQ}xj  
else \D>'  
data[cur]=temp[i2++]; V=QvwQlZ  
} @N1ta-D#  
} j+PW9>Uh  
E}.cz\!.  
} ;m@>v?zE  
"n:L<F,g  
改进后的归并排序: ]oXd|[ G  
Y -7x**I  
package org.rut.util.algorithm.support; Dbz\8gmY  
o!wz:|\S  
import org.rut.util.algorithm.SortUtil; $1#|<|  
nS]/=xP{  
/** !V7VM_}@Y  
* @author treeroot yEzp+Ky  
* @since 2006-2-2 mJ !}!~:  
* @version 1.0 A\.k['!  
*/ .@/5Ln  
public class ImprovedMergeSort implements SortUtil.Sort { kSoAnJ|  
.ikFqZ$$  
private static final int THRESHOLD = 10; pi3Z)YcT  
 w~&bpCB!  
/* Kx ?}%@b  
* (non-Javadoc) ]l}8  
* L)HuQVc g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L'z;*N3D  
*/ 6EP5n  
public void sort(int[] data) { qA Jgz7=c  
int[] temp=new int[data.length]; =DG aK0n  
mergeSort(data,temp,0,data.length-1); ]'DtuT?Z  
} 6aXsRhQ~  
z2wR]G5!  
private void mergeSort(int[] data, int[] temp, int l, int r) { Q^ bG1p//.  
int i, j, k; h&;\   
int mid = (l + r) / 2; fb&K.6"  
if (l == r) ~|R"GloUw  
return; o_X"+s  
if ((mid - l) >= THRESHOLD) UIIunA9  
mergeSort(data, temp, l, mid); V92e#AR  
else m9.QGX\]  
insertSort(data, l, mid - l + 1); (y=P-nm  
if ((r - mid) > THRESHOLD) 6n45]?  
mergeSort(data, temp, mid + 1, r); \Vr(P>  
else L}lc=\  
insertSort(data, mid + 1, r - mid); /N{xFt/?  
eWW\m[k]}  
for (i = l; i <= mid; i++) { oIQor%z  
temp = data; ~Se/uL;*  
} e J2wK3R  
for (j = 1; j <= r - mid; j++) { ]ZHC*r2i  
temp[r - j + 1] = data[j + mid]; x]Nq|XK  
} Gk'J'9*  
int a = temp[l]; ]C}z3hhk  
int b = temp[r]; :X,1KR  
for (i = l, j = r, k = l; k <= r; k++) { Xp4pN{he  
if (a < b) { rq T@i(i  
data[k] = temp[i++]; N}pE{~Y  
a = temp; By:A9 s  
} else { 8&3+=<U  
data[k] = temp[j--]; CIYTs,u#  
b = temp[j]; ^mkplp a  
} y =G  
} |!flR? OU  
} wNcf7/ky  
11%^K=dq  
/** $ [M8G   
* @param data gMFTZQsP  
* @param l mVP@c&1w?  
* @param i \ Lrg:  
*/ q#c\  
private void insertSort(int[] data, int start, int len) { +f;z{)%B  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *-Z JF6  
} !H~G_?Mf\O  
} 0waQw7 E  
} [1G4he%  
} DLJu%5F  
rP^2MH"  
堆排序: Vdh5s292h  
&NB[:S =  
package org.rut.util.algorithm.support; Ag#p )  
:&9#p% /  
import org.rut.util.algorithm.SortUtil; N=)N   
maXQG&.F  
/** Q<wrO  
* @author treeroot =uMoX -  
* @since 2006-2-2 ;~tKNytD`B  
* @version 1.0 dHg[0Br)r  
*/ f*p=]]y  
public class HeapSort implements SortUtil.Sort{ o%RyE]pw,  
7K%Ac  
/* (non-Javadoc) B ,e3r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AdKv!Ta5b  
*/ QEm6#y  
public void sort(int[] data) { gdNEMT  
MaxHeap h=new MaxHeap(); > ~J&i3  
h.init(data); /2~qm/%Q  
for(int i=0;i h.remove(); vsRn \Y  
System.arraycopy(h.queue,1,data,0,data.length); _~-VH&g0R  
} P9SyQbcK  
5ju\!Re3X  
private static class MaxHeap{ =Pd3SC})6V  
rcY[jF  
void init(int[] data){ [8l8 m6  
this.queue=new int[data.length+1]; vRVQ:fw  
for(int i=0;i queue[++size]=data; H+;>>|+:~  
fixUp(size); A)/_:  
} BJB'o  
} ?R#-gvX%  
R*'rg-d  
private int size=0; Go= MG:`  
!J3g,p*  
private int[] queue; sJw#^l  
CM!bD\5  
public int get() { ~%bz2Pd%  
return queue[1]; E}b" qOV  
} 3.xsCcmP  
qVx4 t"%L>  
public void remove() { 9]xOu Cb  
SortUtil.swap(queue,1,size--); tF O27z@  
fixDown(1); wHEt;rc(  
} ![0\m2~iv  
file://fixdown OLXG0@  
private void fixDown(int k) { r@%-S!$  
int j; nulVQOj|  
while ((j = k << 1) <= size) { '[I?G6  
if (j < size %26amp;%26amp; queue[j] j++; hDSt6O4za  
if (queue[k]>queue[j]) file://不用交换 l> W?XH  
break; g;UB+Y 247  
SortUtil.swap(queue,j,k); %8DU}}Rj  
k = j; `!K(P- yB?  
} Xt_8=Q  
} 9NBFG~)|l[  
private void fixUp(int k) { t ux/@}I  
while (k > 1) { 6:fe.0H 9  
int j = k >> 1; bd5\Rt  
if (queue[j]>queue[k]) >DP9S@W  
break; J4;w9[a$  
SortUtil.swap(queue,j,k); SRRqIQz  
k = j; .-awl1 W  
} 9i;%(b{  
} N>/!e787OU  
%-/[.DYt  
} =e$<[ "  
1~zzQ:jAZ  
} K7 -AVMY  
Fw)#[  
SortUtil: 6c$ so  
O&RW[ml*3  
package org.rut.util.algorithm; *:{s|18Pj  
+vIpt{733  
import org.rut.util.algorithm.support.BubbleSort; anxg D?<+B  
import org.rut.util.algorithm.support.HeapSort; I} q2)@  
import org.rut.util.algorithm.support.ImprovedMergeSort; @@-n/9>vs  
import org.rut.util.algorithm.support.ImprovedQuickSort; iP]KV.e'/C  
import org.rut.util.algorithm.support.InsertSort; - 0R5g3^*/  
import org.rut.util.algorithm.support.MergeSort; lA<n}N)j  
import org.rut.util.algorithm.support.QuickSort; ;:4&nJ*qG  
import org.rut.util.algorithm.support.SelectionSort; NTb mI$(  
import org.rut.util.algorithm.support.ShellSort; ]bLI!2Kr  
u!hY bCB  
/** gFizw:l  
* @author treeroot ?#YheML?  
* @since 2006-2-2 :PE{2*  
* @version 1.0 Qz=F nR  
*/ U*!q@g_  
public class SortUtil { opU=49 b  
public final static int INSERT = 1; |r>+\" X  
public final static int BUBBLE = 2; 7 XE&[o  
public final static int SELECTION = 3; Z-z^0QO  
public final static int SHELL = 4; (~q.YJ'  
public final static int QUICK = 5; r'/&{?Je/  
public final static int IMPROVED_QUICK = 6; /99S<U2ej  
public final static int MERGE = 7; YcOPqvQ  
public final static int IMPROVED_MERGE = 8; O]3$$uI=QE  
public final static int HEAP = 9; EmNJ_xY  
= .a}  
public static void sort(int[] data) { RtO3!dGT.  
sort(data, IMPROVED_QUICK); [ R  
} b 5<&hN4g  
private static String[] name={ 8eq*q   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" l25_J.e  
}; U*(/eEtd-  
>HNBTc=~t  
private static Sort[] impl=new Sort[]{ Ne#FBRu5  
new InsertSort(), kl%%b"h'  
new BubbleSort(), `@TWZ%f6  
new SelectionSort(), d9e_slx  
new ShellSort(), Kh&W\\K  
new QuickSort(), 'K&^y%~py,  
new ImprovedQuickSort(), 7^)8DwAl  
new MergeSort(), -<H\VT%98  
new ImprovedMergeSort(),  bi/ AQ^  
new HeapSort() FnxPM`Zx  
}; cq+G0F+H  
diHK  
public static String toString(int algorithm){ |y1O M  
return name[algorithm-1]; !ij R  
} A0X'|4I  
mh#NmW>n  
public static void sort(int[] data, int algorithm) { 6Cw+  
impl[algorithm-1].sort(data); /5:2g# S4  
} PL} Wu=  
_E'F   
public static interface Sort { 6<1 2j7  
public void sort(int[] data); 7>.d*?eao\  
} 3E9 )~$  
`(tVwX4  
public static void swap(int[] data, int i, int j) { IR JN  
int temp = data; la4 #2>#WZ  
data = data[j]; PWciD '!  
data[j] = temp; Znr6,[U+q  
} I;1W6uD=  
} |BGB60}]f  
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