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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。 AF GwT%ZD  
插入排序: S 6GMUaR  
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package org.rut.util.algorithm.support; ZOuR"9]  
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import org.rut.util.algorithm.SortUtil; OF8WDo`  
/** HyEa_9  
* @author treeroot "R23Pi  
* @since 2006-2-2 dQ<(lzS~  
* @version 1.0 9`BEi(z  
*/ &\k?xN  
public class InsertSort implements SortUtil.Sort{ zw]3Vg{T  
q!&B6]  
/* (non-Javadoc) .b,~f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <(YF5Xm6$h  
*/ FZp<|t  
public void sort(int[] data) { Ff<)4`J  
int temp; &dRjqn^&X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ra:GzkIw  
} :CTL)ad2  
} MtUY?O.P2  
} n+?-�  
c|lU(Tf  
} dF e4K"  
2h )8Fq_"  
冒泡排序: BSKEh"f  
1i'Z ei)  
package org.rut.util.algorithm.support; JpK[&/Ct  
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import org.rut.util.algorithm.SortUtil; ~^$MA$/p  
g\&2s,  
/** =Z`0>R`  
* @author treeroot :tLbFW[  
* @since 2006-2-2 [D[D`gpjA  
* @version 1.0 Nd!c2`  
*/ r?^"6 5 =  
public class BubbleSort implements SortUtil.Sort{ gI{ =0  
<HF-2?`  
/* (non-Javadoc) bMmra.x4L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9|=nV|R'6  
*/ B\[-fq  
public void sort(int[] data) { 3gc"_C\$  
int temp; EwQae(PpA  
for(int i=0;i for(int j=data.length-1;j>i;j--){ :B.G)M\  
if(data[j] SortUtil.swap(data,j,j-1); fhRjYYGI  
} Q#pnj thM  
} h<% U["   
} dIJGB==  
} Gw{+xz KJ  
7`fY*O6   
} Dtt-|_EMS  
tOH0IE c  
选择排序: zMGzReJ  
>vVw!.fJ  
package org.rut.util.algorithm.support; XWtiwf'K  
nU17L6'$  
import org.rut.util.algorithm.SortUtil; PN &|8_  
WNF9#oN|oT  
/** $XGtS$  
* @author treeroot 0T))>.iu#  
* @since 2006-2-2 <hv7s,i  
* @version 1.0 lFf XWNb  
*/ .C= I^  
public class SelectionSort implements SortUtil.Sort { s.:r;%a  
aZKXD! 4  
/* # X/Q  
* (non-Javadoc) E[?kGR[  
* _{Y$o'*#I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T3z(k la  
*/ yM ,VrUh  
public void sort(int[] data) { _- %d9@x  
int temp; M|r8KW~S)  
for (int i = 0; i < data.length; i++) { i03gX<=*  
int lowIndex = i; Pp*}R2  
for (int j = data.length - 1; j > i; j--) { ~@P)tl>  
if (data[j] < data[lowIndex]) { I4il R$jg  
lowIndex = j; YPszk5hn  
} ezZph"&  
} 0S.?E.-&0  
SortUtil.swap(data,i,lowIndex); "={L+di:M  
} ?"j@;/=  
} >a=d;  
>^3zU   
} C[YnrI!  
}bMWTT  
Shell排序: 2xTT)9Tq*  
?@UAL .y  
package org.rut.util.algorithm.support; GMm'of#  
uV~e|X "9s  
import org.rut.util.algorithm.SortUtil; :woa&(wN;1  
4#:\?HAu!  
/** ~NNv>5 t5  
* @author treeroot  %+wF"  
* @since 2006-2-2 hhmGv9P  
* @version 1.0 ;'3]{BGcU  
*/ $Ha%Gr  
public class ShellSort implements SortUtil.Sort{ &N\[V-GP2G  
0=;YnsY  
/* (non-Javadoc) [6R fS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gX,9Gh  
*/ *48IF33&s  
public void sort(int[] data) { 2OalAY6RS  
for(int i=data.length/2;i>2;i/=2){ J#7y< s  
for(int j=0;j insertSort(data,j,i); p5<2N  
} /2@["*^$  
} 4;*f1_;f~  
insertSort(data,0,1); X/+OF'po  
} a+?~;.i~  
'm O2t~n  
/** )( bxpW  
* @param data j}RzXJ~t  
* @param j YKs4{?vw  
* @param i yVS\Q,:J9  
*/ sKfXg`0  
private void insertSort(int[] data, int start, int inc) { wFL3& *  
int temp; cOku1 g8  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 70Ka!  
} 1S%}xsR0  
} " s]y!BLk  
} GDPo`# ~  
HFS+QwHW  
} SLoo:)  
rAXX}"l6s  
快速排序: DJP 6TFT&G  
{$fsS&aPg  
package org.rut.util.algorithm.support; @ls.&BHUP  
jO)&KEh  
import org.rut.util.algorithm.SortUtil; daX*}Ix  
*^h_z;{,  
/** )}-$A-p#  
* @author treeroot @GG ccF  
* @since 2006-2-2 2c:f<>r0y  
* @version 1.0 &1Fply7(Ay  
*/ \9/1L ?@  
public class QuickSort implements SortUtil.Sort{ /cY^]VLe  
~ FUa: KYD  
/* (non-Javadoc) k'+}92 o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) , Oli  
*/ \0AiCMX[  
public void sort(int[] data) { P(h5=0`*PR  
quickSort(data,0,data.length-1); 2p:r`THvS5  
} ;V.vfar  
private void quickSort(int[] data,int i,int j){ 0*7*RX  
int pivotIndex=(i+j)/2; 8A{6j  
file://swap 7X'y>\^w^>  
SortUtil.swap(data,pivotIndex,j); !R:y'Y%j  
2u:4$x8  
int k=partition(data,i-1,j,data[j]); -<W2PY<  
SortUtil.swap(data,k,j); m0( E kK  
if((k-i)>1) quickSort(data,i,k-1); #Lka+l;L7  
if((j-k)>1) quickSort(data,k+1,j); dr })-R  
o&-L0]i|  
} 40K2uT{cq  
/** <NB41/  
* @param data xmH-!Da  
* @param i /EFq#+6  
* @param j T;?+kC3  
* @return K.DXJ UR  
*/ WC-_+9)2&  
private int partition(int[] data, int l, int r,int pivot) { d6.}.*7Whc  
do{ s AE9<(g&@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )=H{5&e#u  
SortUtil.swap(data,l,r); <_:zI r,  
} (pYYkR"  
while(l SortUtil.swap(data,l,r); H(qm>h$bU  
return l; Y}.Ystem  
} /iC_!nu  
V5 MO}  
} 6Rz[?-mkLO  
$qm~c[x%  
改进后的快速排序: c8ZCs?   
8H $#+^lW  
package org.rut.util.algorithm.support; DO^y;y>  
>q(6,Mmb  
import org.rut.util.algorithm.SortUtil; NWKi ()nA%  
:ba/W&-d  
/** C\Ayv)S #2  
* @author treeroot +hH}h?K  
* @since 2006-2-2 Lq0 4T0  
* @version 1.0 F6dr  
*/ Z?1OdoT-  
public class ImprovedQuickSort implements SortUtil.Sort { "# S>I8d  
e@jfIF0=}  
private static int MAX_STACK_SIZE=4096; v0 ];W|  
private static int THRESHOLD=10; oI@ 9}*  
/* (non-Javadoc) 5"=:#zN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -JTG?JOd]  
*/ gq4 . d  
public void sort(int[] data) { iJP{|-h  
int[] stack=new int[MAX_STACK_SIZE]; Z"tQp Jg  
qrDcL>Hrn  
int top=-1; T[2}p=<%  
int pivot; ~:2K#q5C  
int pivotIndex,l,r; 8:{ q8xZ=k  
\A(5;ZnuD  
stack[++top]=0; 3k{ @.V ?]  
stack[++top]=data.length-1; .#!mDlY;  
,- HIFbXx@  
while(top>0){ 9X]f[^  
int j=stack[top--]; D/s?i[lb  
int i=stack[top--]; D'L{wm  
 ;Qa;@  
pivotIndex=(i+j)/2; -P#nT 2  
pivot=data[pivotIndex]; ;.s: X  
t)I0lnbs  
SortUtil.swap(data,pivotIndex,j); "DjU:*'  
=Ahw%`/&}]  
file://partition K^H>~`C=  
l=i-1; Z[} $n-V  
r=j; oVkr3K Z  
do{ n\= (S9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4VFc|g  
SortUtil.swap(data,l,r); OCW+?B;  
} Bp3L>AcVu  
while(l SortUtil.swap(data,l,r); SDc" 4g`  
SortUtil.swap(data,l,j); 9^zx8MRXd  
t!jwY/T  
if((l-i)>THRESHOLD){ @ER1zKK?  
stack[++top]=i; x/I;nM Y  
stack[++top]=l-1; Uu5C%9^s  
} pULsGb  
if((j-l)>THRESHOLD){ Ae3,^  
stack[++top]=l+1; e2Jp'93o'  
stack[++top]=j; 8^X]z|2  
} l0`'5>  
dS$ji#+d$  
} QymD-A"P  
file://new InsertSort().sort(data); O71BM@2<  
insertSort(data); s.y}U5Ty?P  
} g1qi\axm  
/** FpzP #;  
* @param data `Bu9Nq  
*/ EcW1;wH  
private void insertSort(int[] data) { *V|zx#RN  
int temp; p7UTqKi  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P<L&c_u  
} k7Oy5$##  
} J px'W  
} e?<D F.Md+  
B] i:)   
} M(5D'4.  
m!Af LSlwm  
归并排序: /*P7<5n0  
b-nYxd  
package org.rut.util.algorithm.support; mV zu~xym  
@?/\c:cp  
import org.rut.util.algorithm.SortUtil; O+FBQiv  
N84qcc  
/** t/ eo]  
* @author treeroot PYieD}'  
* @since 2006-2-2 RbAt3k;y  
* @version 1.0 IJIQ" s  
*/ S'@=3)  
public class MergeSort implements SortUtil.Sort{ q^6N+^}QN  
Wp4K6x  
/* (non-Javadoc) *w 21U!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |EeBSRAfe  
*/ o7 arxo\  
public void sort(int[] data) { BWEv1' v  
int[] temp=new int[data.length]; sVoR?peQ  
mergeSort(data,temp,0,data.length-1); : ;TYL[  
} (nz}J)T&  
:c<*%*e  
private void mergeSort(int[] data,int[] temp,int l,int r){ SG`)PW?  
int mid=(l+r)/2; ~04[KG  
if(l==r) return ; )* 3bkKVB  
mergeSort(data,temp,l,mid); ,s? dAy5  
mergeSort(data,temp,mid+1,r); fq(5Lfe}  
for(int i=l;i<=r;i++){ ITc `]K  
temp=data; 6n-r  
} @g\;` #l  
int i1=l; kaO{#i2-  
int i2=mid+1; yoW> BX  
for(int cur=l;cur<=r;cur++){ 5)*6V&  
if(i1==mid+1) 4:`[qE3  
data[cur]=temp[i2++]; raHVkE{<  
else if(i2>r) 7@~QkTH~y  
data[cur]=temp[i1++]; f9F2U )  
else if(temp[i1] data[cur]=temp[i1++]; m&cvU>lC  
else I-{^[pp  
data[cur]=temp[i2++]; nNs .,J)  
} 4cB&Hk  
} B_tQeM  
kp; &cQu!  
} p z @km  
1M/$< kQ-N  
改进后的归并排序: tQ[]Rc  
6KB^w0oA  
package org.rut.util.algorithm.support; [Q:f-<nH  
K @C4*?P  
import org.rut.util.algorithm.SortUtil; hiIya WU  
:iEAUM  
/** 9'X@@6b*'  
* @author treeroot _XWnS9  
* @since 2006-2-2 P4[]qbfd,  
* @version 1.0 @it/$>R^)  
*/ yU!GS-  
public class ImprovedMergeSort implements SortUtil.Sort { {\Ys@FF  
@E(P9zQ/zy  
private static final int THRESHOLD = 10; + Y;8~+  
_<2 RYXBC  
/* }Az'Zu4 =  
* (non-Javadoc) Z+,CL/  
* \*J.\f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g@(4ujOT  
*/ 1=>2uYKR  
public void sort(int[] data) { Qpw@MF2P  
int[] temp=new int[data.length]; 22'vm~2E  
mergeSort(data,temp,0,data.length-1); nqeVV&b!  
} 6Wb!J>93  
`/c@nxh  
private void mergeSort(int[] data, int[] temp, int l, int r) { \H[Yyp4  
int i, j, k; d QDLI  
int mid = (l + r) / 2; qzHU)Ns(_  
if (l == r) FSe5k5  
return; L,W:,i/C  
if ((mid - l) >= THRESHOLD) 7P c(<Ui+  
mergeSort(data, temp, l, mid); {yU0D*#6  
else cTy'JT7  
insertSort(data, l, mid - l + 1); =G*z 5 3  
if ((r - mid) > THRESHOLD) :i}@Br+R7L  
mergeSort(data, temp, mid + 1, r); D=JlA~tS>  
else k|5k8CRX  
insertSort(data, mid + 1, r - mid); +8eVj#N  
o Fi) d[`  
for (i = l; i <= mid; i++) { iAgOnk[  
temp = data; _E (x2BS?  
} wE8]'o  
for (j = 1; j <= r - mid; j++) { ~Q0&P!k  
temp[r - j + 1] = data[j + mid]; eN4t1 $  
} -zR.'x%  
int a = temp[l]; g kn)V~ij  
int b = temp[r]; >-eS&rma  
for (i = l, j = r, k = l; k <= r; k++) { S NN#$8\  
if (a < b) { RB *P0  
data[k] = temp[i++]; K9^"NS3  
a = temp; &AJUY()8  
} else { _V&x`ks  
data[k] = temp[j--]; *cPN\Iu.W  
b = temp[j]; yduuFK  
} wZ O@J|  
} yE<,Z%J[n  
} oLd:3,p}  
X= SG  
/** 8M~u_`6  
* @param data CxkMhd8qz  
* @param l nqrDT1b**  
* @param i T"IW Jpc  
*/ 1B(G]o_>!  
private void insertSort(int[] data, int start, int len) { Z|}H^0~7S  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :|Upx4]Ec  
} 4':MI|/my_  
} hj+p`e S  
} :Fc8S9  
} -&$%|cyThQ  
>6w@{p2B  
堆排序: Y1|^>C#a  
i"vDRrDe  
package org.rut.util.algorithm.support; YT][\x  
2G H)iUmc  
import org.rut.util.algorithm.SortUtil; :)j7U3u  
|K6nOX!i  
/** qR_SQ VN  
* @author treeroot &hO$4qtN  
* @since 2006-2-2 T:Bzz)2/  
* @version 1.0 KoFv0~8Q  
*/ f^~2^p 1te  
public class HeapSort implements SortUtil.Sort{ ": nI_~q  
MV9r5|3-  
/* (non-Javadoc) NWeV>;lh9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5%'o%`?i  
*/ Nz}|%.GP"  
public void sort(int[] data) { w{~" ;[@  
MaxHeap h=new MaxHeap(); 1R*1BStc  
h.init(data); QP'qG@j[:  
for(int i=0;i h.remove(); 9OH.&g  
System.arraycopy(h.queue,1,data,0,data.length); dWMccn;-m  
} 3F;EE:  
[1e.i  
private static class MaxHeap{ $x/J+9Ww  
3Sk5I%  
void init(int[] data){ EkDws `@  
this.queue=new int[data.length+1]; 9GtLMpy  
for(int i=0;i queue[++size]=data; makaI0M  
fixUp(size); U-ERhm>uk  
} pz.Y=V\t  
} 6V+V zDo  
=P 1RdyP  
private int size=0; ?U=mcdqd  
PKl]Geg P  
private int[] queue; i[mC3ghM6,  
!'+\]eA  
public int get() { <##|311o  
return queue[1]; fi 5YMYd1  
} C+DG+_%V*S  
_xa}B,H  
public void remove() { 2-QuT"Gkd  
SortUtil.swap(queue,1,size--); Fka1]|j9  
fixDown(1); k>7gy?Y!K<  
} u}^a^B$  
file://fixdown llHN2R%(  
private void fixDown(int k) { S_a :ML<  
int j; 8moUK3w  
while ((j = k << 1) <= size) { ?0? x+  
if (j < size %26amp;%26amp; queue[j] j++; L00Sp#$\  
if (queue[k]>queue[j]) file://不用交换 2*N&q|ED  
break; ys:1Z\$P  
SortUtil.swap(queue,j,k); 4F}g(  
k = j; -/@|2!d  
} USlF+RY@3L  
} t `N ">c"  
private void fixUp(int k) { Q@PJ)fwN  
while (k > 1) { #(m `2Z`H  
int j = k >> 1; Z|V"8jE  
if (queue[j]>queue[k]) ^vYVl{$bT  
break; =1%zI%  
SortUtil.swap(queue,j,k); Xw&QrTDS`  
k = j; 45]Ym{]  
} ;D%$Eh&oma  
} %i;r]z-  
e-L5=B  
} \] tq7  
U>e3_td3,  
} UchALR^5  
`I]1l MJ)o  
SortUtil: R[mH35D/  
<Tj"GVZAEO  
package org.rut.util.algorithm; hNu>s  
j1'xp`jgv  
import org.rut.util.algorithm.support.BubbleSort; L8,H9T#e  
import org.rut.util.algorithm.support.HeapSort; -o=P85 V  
import org.rut.util.algorithm.support.ImprovedMergeSort; -D.B J(  
import org.rut.util.algorithm.support.ImprovedQuickSort; [TiT ff&LV  
import org.rut.util.algorithm.support.InsertSort; SX1Fyy6 w  
import org.rut.util.algorithm.support.MergeSort; M"$jpBN*  
import org.rut.util.algorithm.support.QuickSort; ~:P8g<w  
import org.rut.util.algorithm.support.SelectionSort; a"v"n$  
import org.rut.util.algorithm.support.ShellSort; S0Rf>Eo4  
3iwoMrp  
/** qd#(`%_/  
* @author treeroot W<cW;mO  
* @since 2006-2-2 D7gX,e  
* @version 1.0 jm#F*F vL  
*/ H3UX{|[  
public class SortUtil { o2 T/IJP  
public final static int INSERT = 1; 7Ap~7)z[  
public final static int BUBBLE = 2; XNkQk0i;g&  
public final static int SELECTION = 3; Cn6n4, 0  
public final static int SHELL = 4; rw=UK`  
public final static int QUICK = 5; 6N)< o ;U  
public final static int IMPROVED_QUICK = 6; aPY>fy^8D  
public final static int MERGE = 7; 82Z[eo  
public final static int IMPROVED_MERGE = 8; E,ZB;  
public final static int HEAP = 9; Mo/2,DiI5  
&2<&X( )  
public static void sort(int[] data) { !~w6"%2+7  
sort(data, IMPROVED_QUICK); ?@g;[310`  
} PJSDY1T  
private static String[] name={ 61s2bt#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ZH`K%h0  
}; *`S)@'@:(  
4}r\E,`*X  
private static Sort[] impl=new Sort[]{ AK*mcTr  
new InsertSort(), }jyS\drJ  
new BubbleSort(), xsY>{/C  
new SelectionSort(), dEAAm=K,<  
new ShellSort(), 2EqsfU* I  
new QuickSort(), =yhn8t7@]  
new ImprovedQuickSort(), `DWi4y7  
new MergeSort(), 5 vu_D^Q  
new ImprovedMergeSort(), [#P`_hx  
new HeapSort() =?`y(k4a  
}; Nak'g/uP>  
DO1N`7@o  
public static String toString(int algorithm){ ^NnU gj  
return name[algorithm-1]; U~){$kpI#  
} l6}b{e  
o?Tp=Ge  
public static void sort(int[] data, int algorithm) { e8P!/x-y  
impl[algorithm-1].sort(data); |/T<]+X;  
} JQbMw>Y  
28UL  
public static interface Sort { yTq(x4]  
public void sort(int[] data); }G,SqpcG  
} @6i8RmOu}  
&=6cz$]z  
public static void swap(int[] data, int i, int j) { UVoLHd  
int temp = data; 3 q.[-.q  
data = data[j]; .olP m3MC  
data[j] = temp; 1$3XKw'  
} faL^=CAe  
} gQk#l\w _  
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