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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。 =   
插入排序: b,Ed}Ir  
n&i WYECz  
package org.rut.util.algorithm.support; ') 5W  
(zWzF_v  
import org.rut.util.algorithm.SortUtil; Bz_['7D  
/** CM>/b3nOW  
* @author treeroot >Gk<[0U  
* @since 2006-2-2 V`TXn[7  
* @version 1.0 %/,PY>:|  
*/ "6~pTHT  
public class InsertSort implements SortUtil.Sort{ s24-X1d(9  
hQ i[7r($8  
/* (non-Javadoc) xB68RQe)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /_rQ>PgSZW  
*/ LbJ tU !  
public void sort(int[] data) { &jl'1mZ  
int temp; qlIC{:E0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); { Y|h;@j$  
} Yi{[llru  
} xp7,0'(;  
} aj20, w  
y+(<Is0w  
} [@";\C_I  
"monuErg&  
冒泡排序: &"._%S58V  
^v}Z5,aN  
package org.rut.util.algorithm.support; ::dLOf8o  
-fj;9('YJ  
import org.rut.util.algorithm.SortUtil; E(4ti]'4  
~B:Lai4"  
/** 6^ wg'u]c  
* @author treeroot ;QR|v  
* @since 2006-2-2 76c4~IG#  
* @version 1.0 bS&'oWy*B  
*/ H'<9;bD -  
public class BubbleSort implements SortUtil.Sort{ $ &qB,>5=X  
 s+[_5n~  
/* (non-Javadoc) Gc~A,_(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Wvzum@5D  
*/ 8doT`rI1  
public void sort(int[] data) { DOkEWqM!  
int temp; 7WiVor$g-  
for(int i=0;i for(int j=data.length-1;j>i;j--){  )"&-vg<  
if(data[j] SortUtil.swap(data,j,j-1); l'W?X '  
} x~$P.X7(~  
} E,xCfS)  
} N Rcg~Nu  
} ]b'K BAMy  
+DF<o U~  
} 5BS-q"  
MCurKT<pQ  
选择排序:  .#zx[Io  
({m["d  
package org.rut.util.algorithm.support; jn^i4f>N  
GL@s~_;T6  
import org.rut.util.algorithm.SortUtil; 8hQ"rrj+  
cK(}B_D$  
/** PP.k>zsx  
* @author treeroot .W,< ]L '  
* @since 2006-2-2 L0UAS'hf  
* @version 1.0 `vDg~o  
*/ ;)83tx /  
public class SelectionSort implements SortUtil.Sort { ,<R/x[  
Xvi{A]V  
/* ]}ff*W  
* (non-Javadoc) ,G"?fQ7zR  
* `*KS` z?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FDbx"%A  
*/ 1Lqs>*  
public void sort(int[] data) { 5irewh'R  
int temp; QDBptI:  
for (int i = 0; i < data.length; i++) { :lgIu .  
int lowIndex = i; IhM-a Y y5  
for (int j = data.length - 1; j > i; j--) { ;r49H<z   
if (data[j] < data[lowIndex]) { !h?N)9e  
lowIndex = j; [mw#a9  
} '(+l77G  
} Cla Yy58v  
SortUtil.swap(data,i,lowIndex); 7; T S  
} xdYjl.f  
} >8t(qM-~:  
{4}Sl^kn*  
} dXe763~<  
D Sd 5?  
Shell排序: bCd! ap+#  
}9Y='+.%^  
package org.rut.util.algorithm.support; Sl:\5]'yJ  
`dEWP;#cp  
import org.rut.util.algorithm.SortUtil; 9tl Fbu  
BAX])~_  
/** `'0opoQRe  
* @author treeroot @{+*ea7M(`  
* @since 2006-2-2 9nM {x?  
* @version 1.0 .IF dJ  
*/ @m6pAo4P  
public class ShellSort implements SortUtil.Sort{ )I1LBvfQ  
:w:5;cm V  
/* (non-Javadoc) kZUuRB~om  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {sX*SbJt  
*/ HeSnj-mtr}  
public void sort(int[] data) { O~'1)k>  
for(int i=data.length/2;i>2;i/=2){ 1;? L:A  
for(int j=0;j insertSort(data,j,i); ~+CNED0z+  
} E+E5`-V  
} Kz$Ijj  
insertSort(data,0,1); Plm3vk=  
} %}'sFu m`  
o<V-gS  
/** 3vrQY9H>  
* @param data #GWQ]r?  
* @param j jVfC4M7 ,  
* @param i `kekc.*-[@  
*/ Ls|;gewp  
private void insertSort(int[] data, int start, int inc) { nr s!e  
int temp; >V;<K?5B`W  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); u6(7#n02  
} Bm~>w`1wK  
} !my5-f>{(  
} HnOF_Twq  
^e&,<+qY  
} ef!I |.FW  
XZKOBq B]  
快速排序: ^.-P]I]  
Or_9KX2  
package org.rut.util.algorithm.support; SxOM@A  
R^PQ`$W 'R  
import org.rut.util.algorithm.SortUtil; y{v*iH<  
J4S2vBe16  
/** 72v 9S T  
* @author treeroot x;b'y4kH  
* @since 2006-2-2 Ef?_d]  
* @version 1.0 ` -w;=_Bm  
*/ L` Qiu@  
public class QuickSort implements SortUtil.Sort{ F$+_Z~yt3;  
8|J%IE  
/* (non-Javadoc) 0K#dWc}"a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) & JF^a  
*/ ]?<uf40Mm  
public void sort(int[] data) { +x4o#N  
quickSort(data,0,data.length-1); !).D  
} bgEUG  
private void quickSort(int[] data,int i,int j){ ,l@hhaLm?  
int pivotIndex=(i+j)/2; d[O.UzQ  
file://swap +VU,U`W  
SortUtil.swap(data,pivotIndex,j); DrB=   
RS$:]hxd>_  
int k=partition(data,i-1,j,data[j]); xQ$*K]VP  
SortUtil.swap(data,k,j); H"n"Q:Yp  
if((k-i)>1) quickSort(data,i,k-1); O #0:6QX  
if((j-k)>1) quickSort(data,k+1,j); 4!E6|N%f  
-bE{yT)7  
} ) tsaDG-E  
/** /Wzic+v<>  
* @param data Q+ uYr-  
* @param i ,AM6E63  
* @param j ~j8x"  
* @return rL_AqSGAK1  
*/ 2^Y1S?g.  
private int partition(int[] data, int l, int r,int pivot) { &z,w0FOre  
do{ @AWKEo<7.I  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Kh%9Oy  
SortUtil.swap(data,l,r); 0p~:fm  
} o&X!75^G>  
while(l SortUtil.swap(data,l,r); *S<>_R 8  
return l; @(oz`|*  
} szWh#O5=  
4qiG>^h9  
} R]L 7?=  
5\qoZs*e  
改进后的快速排序: uVIs5IZzIi  
L?0dZY-"  
package org.rut.util.algorithm.support; d}IVYI  
.GkH^9THP  
import org.rut.util.algorithm.SortUtil; ,AACE7%l  
FFP>Y*v(  
/** {:'e H  
* @author treeroot J/ <[irC  
* @since 2006-2-2 \6nWt6M  
* @version 1.0 |A}E/=HPU  
*/ nj #Ab  
public class ImprovedQuickSort implements SortUtil.Sort { .:$%3#N$(Y  
zFwp$K>{QY  
private static int MAX_STACK_SIZE=4096; Q9?/)&3Bu  
private static int THRESHOLD=10; /GfC/)1_  
/* (non-Javadoc) qnru atA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l}Jf;C*j1z  
*/ IjJ3./L!5  
public void sort(int[] data) { Hza{"I*^  
int[] stack=new int[MAX_STACK_SIZE]; w^z}!/"]u  
e9"<.:&  
int top=-1; ADlPdkmym  
int pivot; }B}?qV  
int pivotIndex,l,r; D.U)R7(  
R\1#)3e0  
stack[++top]=0; u;;]S!:M  
stack[++top]=data.length-1; :+m|KC(Z  
?$ o9/9w  
while(top>0){ r|6S&Ia>  
int j=stack[top--]; !<@k\~9^D  
int i=stack[top--]; (&+ ~hW5d  
g:O~1jq  
pivotIndex=(i+j)/2; Y <Ta2H  
pivot=data[pivotIndex]; zeNvg/LI^  
B,, f$h!  
SortUtil.swap(data,pivotIndex,j); 8X[G)J;  
Bk~WHg>@G  
file://partition 5;C+K~Y  
l=i-1; vR-rCve$P  
r=j; }4  5|  
do{ #Ubzh`v  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~z%K9YcyU  
SortUtil.swap(data,l,r); _`*x}  
} `A$yF38!  
while(l SortUtil.swap(data,l,r); N>'1<i?  
SortUtil.swap(data,l,j); 95[yGO>ZYz  
(X QgOR#  
if((l-i)>THRESHOLD){ eHm!  
stack[++top]=i; ,8cw jS2E  
stack[++top]=l-1; gO1`zP!9Z  
} aKkQXq*  
if((j-l)>THRESHOLD){ KP -g<Zc  
stack[++top]=l+1; 2< w/GX.  
stack[++top]=j; sq*d?<:3  
} o[!]xmj  
(zCas}YAKI  
} #Kn=Q  
file://new InsertSort().sort(data); vZq7U]RW  
insertSort(data); '9H7I! L@  
} i/NY86A  
/** FzXVNUMP  
* @param data L'`W5B@  
*/ LK)0g4{  
private void insertSort(int[] data) { "=MRzSke3  
int temp; 9<W0'6%{/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l5l:'EY>  
} {UT^p IP\  
} O\q|b#q}/  
} 3^xTZ*G  
%19TJn%J$  
} ^ RU"v>  
B!jT@b{  
归并排序: A=Q"IdK  
L ![bf5T  
package org.rut.util.algorithm.support; @D[jUC$E  
q UY;CEf  
import org.rut.util.algorithm.SortUtil; lGwX.cA!'  
Q>cLGdzO  
/** RM|<(kq  
* @author treeroot @f-0OX$*  
* @since 2006-2-2 ygW,4Vz7J  
* @version 1.0 hug8Hhf_&  
*/ B- N  
public class MergeSort implements SortUtil.Sort{ Qb!9QlW  
_S7GkpoK  
/* (non-Javadoc) O{y2tz3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w4<RV:Vmt  
*/ MS%xOB*6  
public void sort(int[] data) { M~t S *  
int[] temp=new int[data.length]; Vf`n>  
mergeSort(data,temp,0,data.length-1); 3b (I~  
} ]d&6 ?7 !>  
4Cr |]o'  
private void mergeSort(int[] data,int[] temp,int l,int r){ ~M6Q8Y9  
int mid=(l+r)/2; I $!Y  
if(l==r) return ; [RiCa  
mergeSort(data,temp,l,mid); L5 Rj;qhi  
mergeSort(data,temp,mid+1,r); 2VyLt=mdh  
for(int i=l;i<=r;i++){ SWvy< f4<  
temp=data; oIdMDp^$  
} +e. bO5Y  
int i1=l; 7Co }4  
int i2=mid+1; v4kk4}lE  
for(int cur=l;cur<=r;cur++){ %,g6:Zc@  
if(i1==mid+1) -)(HG)3  
data[cur]=temp[i2++]; #>g]CRN  
else if(i2>r) m*tmmP4R  
data[cur]=temp[i1++]; )s4#)E1  
else if(temp[i1] data[cur]=temp[i1++]; Lj6$?(x}  
else m;)[gF  
data[cur]=temp[i2++]; C s?kZ %  
} tRZCOEo4  
} ^CX=<  
ABvB1[s#  
} ]e@'9`G-'  
MYFRrcu;  
改进后的归并排序: N%'=el4L  
s"#>Xc  
package org.rut.util.algorithm.support; ' \Z54$  
lPFT)>(+@  
import org.rut.util.algorithm.SortUtil; by,"Orpwq;  
]fg?)z-Z  
/** hVo]fD|W  
* @author treeroot 4<CHwIRHY  
* @since 2006-2-2 rwGY)9 |  
* @version 1.0 ^\Gaf5{  
*/ \2~Cn c*O  
public class ImprovedMergeSort implements SortUtil.Sort { M^DYzJ  
a^t#kdT  
private static final int THRESHOLD = 10; z)I.^  
}D j W  
/* PB*m D7"  
* (non-Javadoc) NCbn<ojb  
* nm2bBX,fh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZG+8kt!w  
*/ $e1==@ R  
public void sort(int[] data) { ohklLZoZ  
int[] temp=new int[data.length]; |{udd~oE&  
mergeSort(data,temp,0,data.length-1); =Bu> }$BD  
} g0NtM%  
:^]rjy/|+  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~fbFA?g3  
int i, j, k; _0p8FhNt  
int mid = (l + r) / 2; ' ^L|}e  
if (l == r) /@-!JF#g  
return; feSd%  
if ((mid - l) >= THRESHOLD) Gv?3T Am8  
mergeSort(data, temp, l, mid); PLlad\  
else sw A^oU  
insertSort(data, l, mid - l + 1); #InuN8sI  
if ((r - mid) > THRESHOLD) g.$a]pZz  
mergeSort(data, temp, mid + 1, r); 8i"v7}  
else <WhdQKFf-  
insertSort(data, mid + 1, r - mid); CR3<9=Lv>  
ErmlM#u  
for (i = l; i <= mid; i++) { ?T]3I.3 2^  
temp = data; ;cKN5#7  
} M,nX@8 _h  
for (j = 1; j <= r - mid; j++) { L|O[u^  
temp[r - j + 1] = data[j + mid]; %<c2jvn+k  
} EY'kIVk  
int a = temp[l]; L[;U Z)V@  
int b = temp[r]; x-J.*X/aB  
for (i = l, j = r, k = l; k <= r; k++) { l12Pj02w  
if (a < b) { }o^VEJc`O  
data[k] = temp[i++]; =GH>-*qp  
a = temp; TKJs'%Q7F6  
} else { W.u+R?a=  
data[k] = temp[j--]; Ik W 8$>  
b = temp[j]; ;\1/4;m  
} uW4 )DT9[5  
} REqQJ7a/  
} 8x":7 yV&  
oN3DM;  
/** !' ;1;k);  
* @param data |7XPu  
* @param l (@wgNA-P  
* @param i *nZe|)m  
*/ MPaF  
private void insertSort(int[] data, int start, int len) { VS.~gHx  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (.r9bl  
} %0-fn'  
} ha Tmfh_|  
} ">zK1t5=  
} s0EF{2<F  
*GUQz  
堆排序:  al#BfcZW  
MK1V1F`  
package org.rut.util.algorithm.support; R*S9[fqC[  
4\?z^^  
import org.rut.util.algorithm.SortUtil; hD)'bd  
{S l#z }@s  
/** ,$4f#)  
* @author treeroot %X|fp{C  
* @since 2006-2-2 2lb HUK  
* @version 1.0 &7-ENg9 [  
*/ Dt#( fuk#  
public class HeapSort implements SortUtil.Sort{ 3rdrNc  
^$>Q6.x?*)  
/* (non-Javadoc) Qk5pRoL_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;*J_V/&?  
*/ }Mv$Up  
public void sort(int[] data) { s:O8dL /  
MaxHeap h=new MaxHeap(); 0gevn  
h.init(data); L <QjkFj  
for(int i=0;i h.remove(); }F B]LLi  
System.arraycopy(h.queue,1,data,0,data.length); ]?un'$%e  
} )G+D6s23  
J]AkWEiCJ  
private static class MaxHeap{ V7S[rI<<r  
f*%Y]XL;%  
void init(int[] data){ +hZ{/  
this.queue=new int[data.length+1]; Kb$6a'u7  
for(int i=0;i queue[++size]=data; 6?`3zdOeO  
fixUp(size); ,%^qzoZnT  
} 7QX p\<7  
}  8MZ:=  
}+/F?_I= %  
private int size=0; C#l9MxZE  
\D5_g8m:  
private int[] queue; #qcF2&a%  
SB) Hz8<  
public int get() { e~1$x`DH  
return queue[1]; qX"m"ko  
} ).i :C(|  
gw^X-  
public void remove() {  m1#,B<6  
SortUtil.swap(queue,1,size--); |h 3`z  
fixDown(1); IKFNu9*"h  
} [+3~wpU(p  
file://fixdown 1,Uf-i  
private void fixDown(int k) { $=ua$R4Z+  
int j; &eIwlynm  
while ((j = k << 1) <= size) { d-ML[^G  
if (j < size %26amp;%26amp; queue[j] j++; $.Qu55=z<  
if (queue[k]>queue[j]) file://不用交换 `]$H\gNI[8  
break; btDPP k'  
SortUtil.swap(queue,j,k); sOBuJx${m  
k = j;  KrqO7  
} s g6e% 5  
} eCy]ugsi%  
private void fixUp(int k) { 15Vo_ wD<y  
while (k > 1) { )%Lgo${[;  
int j = k >> 1; K-6+fgeB  
if (queue[j]>queue[k]) PESJ7/^E  
break; "*oN~&flc  
SortUtil.swap(queue,j,k); x)prI6YMv\  
k = j; |W;EPQ+<  
} Q^ |aix~ K  
} W't.e0L<6  
QV*W#K\7q  
} +l@+e_>  
_Z3_I_lW  
} 39Zs  
W<OO:B.ty  
SortUtil: x5YHmvy/l  
n,o;:c  
package org.rut.util.algorithm; /GU%{nT  
ghVxcK  
import org.rut.util.algorithm.support.BubbleSort; 2\L}Ka|v  
import org.rut.util.algorithm.support.HeapSort; V1>>]]PS  
import org.rut.util.algorithm.support.ImprovedMergeSort;  j.vBld  
import org.rut.util.algorithm.support.ImprovedQuickSort; xyaU!E*  
import org.rut.util.algorithm.support.InsertSort; }c;h:CE#  
import org.rut.util.algorithm.support.MergeSort; OJ4-p&1  
import org.rut.util.algorithm.support.QuickSort; ~glFB`?[  
import org.rut.util.algorithm.support.SelectionSort; BGZvgMxLJ  
import org.rut.util.algorithm.support.ShellSort; -"X} )N2  
n 7 m!   
/** VsR`y]"g  
* @author treeroot pTzfc`~xv  
* @since 2006-2-2 -nKBSls  
* @version 1.0 u9^R ?y  
*/ K)n0?Q_>  
public class SortUtil { #^;^_  
public final static int INSERT = 1; hXM2B2[  
public final static int BUBBLE = 2; :>GT<PPD;  
public final static int SELECTION = 3; _=oNQ  
public final static int SHELL = 4; {1j[RE  
public final static int QUICK = 5; &m>txzo  
public final static int IMPROVED_QUICK = 6; H=k`7YN  
public final static int MERGE = 7; dL!K''24{  
public final static int IMPROVED_MERGE = 8; 26\*x  
public final static int HEAP = 9; DU: sQS4  
Zjh9jvsW  
public static void sort(int[] data) { DozC>  
sort(data, IMPROVED_QUICK); L7&|  
} BlvNBB1^  
private static String[] name={ dk9nhS+faJ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" C},$(2>0+  
}; J "dp?i  
@5-+>\Hd^t  
private static Sort[] impl=new Sort[]{ v__;oqN0  
new InsertSort(), Q`X5W  
new BubbleSort(), |;B 'C#  
new SelectionSort(), tHo0q<.oX  
new ShellSort(), _*w}"\4_  
new QuickSort(), b1{XGK'  
new ImprovedQuickSort(), lt&30nf=  
new MergeSort(), f3]u-e'b  
new ImprovedMergeSort(), k^PqB+P!  
new HeapSort() vDAv/l9  
}; SY}iU@xo  
,As78^E{  
public static String toString(int algorithm){ ]m(5>h#  
return name[algorithm-1]; oFeflcSz  
} e[@ ^UY  
~-w  
public static void sort(int[] data, int algorithm) { !OJSQB,  
impl[algorithm-1].sort(data); K!9rH>`\  
} Z0e+CEzq  
*X^__PS]  
public static interface Sort { %KmB>9  
public void sort(int[] data); |k4ZTr]?  
} zA/W+j$:  
Q nqU!6k@  
public static void swap(int[] data, int i, int j) { #dGg !D  
int temp = data; r4xq%hy  
data = data[j]; s `r  tr  
data[j] = temp; &xqe8!FeA  
} #:68}f"$  
} Vy:ER  
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