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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。 .aR$ou,7  
插入排序: DfP vi1  
+ f?xVW<h  
package org.rut.util.algorithm.support; gMZ?MG  
4,R1}.?BzJ  
import org.rut.util.algorithm.SortUtil; 7Y'.yn  
/** ;0\  
* @author treeroot j2{ '!  
* @since 2006-2-2 v~HfA)#JK  
* @version 1.0 -U_<:  
*/ B bx.RL.V  
public class InsertSort implements SortUtil.Sort{ t) ~v5vr  
#bLeK$  
/* (non-Javadoc) )kNyl@m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;;- I<TL  
*/  0bk094  
public void sort(int[] data) { !ly]{DTmm  
int temp; Eq/%k $6#1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G;pxB,4s5  
} /!0{9F<  
} jCbxI^3A  
} .W%{j()op  
|"a%S,I'  
} )<jT;cT!&  
$PNIuC?=  
冒泡排序:  kQm\;[R  
enJE#4Z5&s  
package org.rut.util.algorithm.support; qu/59D  
N;\by<snN  
import org.rut.util.algorithm.SortUtil; @7';bfsix  
ojd/%@+u+Y  
/** R|AG N*.  
* @author treeroot O ijG@bI8  
* @since 2006-2-2 *tT }y(M  
* @version 1.0 L$FLQyDR  
*/ r0\cgCn  
public class BubbleSort implements SortUtil.Sort{ C"ZCX6p+$  
eq\{*r"DCK  
/* (non-Javadoc) &wZ:$lK#o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p,9eZUGy  
*/ fXYg %  
public void sort(int[] data) { <%Re!y@OL  
int temp; s&$Zgf6Z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ aOj5b>>  
if(data[j] SortUtil.swap(data,j,j-1); P A9 ]L  
} U(=cGA.$  
} S\jN:o#b  
} +x0-hRD  
} 8f|  
0Q5ua `U  
} -K)P|'-?m  
 g=:C/>g  
选择排序: `7|v  
D|n`9yv a  
package org.rut.util.algorithm.support; CtA0W\9w5a  
3u8HF-  
import org.rut.util.algorithm.SortUtil; L +s,,k  
iffRGnN^e  
/** "ND 7,rQ  
* @author treeroot p_ QL{gn  
* @since 2006-2-2 8<uKzb(O:  
* @version 1.0 xFS`#1  
*/ :U<`iJwY  
public class SelectionSort implements SortUtil.Sort { 4jrY3gyBX  
([ xYOxcp5  
/* W%.Kr-[?`o  
* (non-Javadoc) sEL[d2oO  
* W$P)fPU'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @&d/}Mx"t  
*/ Jh[fFg]  
public void sort(int[] data) { *Oo2rk nQ  
int temp; C=AX{sn  
for (int i = 0; i < data.length; i++) { b07 MTDFH7  
int lowIndex = i; Y] nY.5irL  
for (int j = data.length - 1; j > i; j--) { qGgT<Rd~1  
if (data[j] < data[lowIndex]) { Zcv1%hI  
lowIndex = j; )fR'1_  
} o% !a  
} %Ow,.+m  
SortUtil.swap(data,i,lowIndex); 1NT@}j~/  
} x5 3 aGi|  
} <$HP"f+<S5  
Ut8yA"Y~  
} ?E2/ CM  
[HK[{M =v=  
Shell排序: #Gs] u  
(6 fh[eK86  
package org.rut.util.algorithm.support; -pc*$oe  
BxO8oKe  
import org.rut.util.algorithm.SortUtil; 7WW@%4(  
~FM5]<X)  
/** K9gfS V>]  
* @author treeroot #tdI;x3  
* @since 2006-2-2 Hc4]2pf  
* @version 1.0 cyG3le& +G  
*/ Qg9 N?e{z  
public class ShellSort implements SortUtil.Sort{ }0|,*BkI m  
5B@+$D[0?3  
/* (non-Javadoc) 4?,N;Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +=^10D  
*/ 'cT R<LVo  
public void sort(int[] data) { 3ePG=^K^  
for(int i=data.length/2;i>2;i/=2){ L*1C2EL/q  
for(int j=0;j insertSort(data,j,i); PSNrY e  
}  &jf:7y  
} X) xQKkL0  
insertSort(data,0,1); p^A9iieHp=  
} 4r5?C;g  
BYrj#n5  
/** y}5H<ZcXA  
* @param data /N7j5v(  
* @param j {o4m3[C7=}  
* @param i `$7j:<c=  
*/ O!kBp(?]  
private void insertSort(int[] data, int start, int inc) { f 6Bx>lh  
int temp; ; 7[5%xM  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +hRAU@RA  
} X4lz?Y:*  
} TP[<u-@G  
} <MI>>$seiJ  
\L(~50{(  
} 3Qfj=; 4  
4WZ:zr N  
快速排序: 4}Y2 B$  
:e`;["(,  
package org.rut.util.algorithm.support; ~%B^`s  
<|~X,g;f  
import org.rut.util.algorithm.SortUtil; sME3s-  
U`D/~KJ{Y  
/** N)03{$WM  
* @author treeroot $uF} GP_)  
* @since 2006-2-2 (qnzz!s  
* @version 1.0 t0d1? ?G  
*/ 3VbMW,_&"  
public class QuickSort implements SortUtil.Sort{ f3]Z22Yq  
r:2G11[  
/* (non-Javadoc) DDyeN uK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L\XnTL{  
*/ /Zap'S/  
public void sort(int[] data) { )Y+n4UL3NK  
quickSort(data,0,data.length-1); X<m#:0iD  
} %,E\8{I+  
private void quickSort(int[] data,int i,int j){ 7 /w)^&8  
int pivotIndex=(i+j)/2; c=K . |g,  
file://swap [84ss;.$  
SortUtil.swap(data,pivotIndex,j); MJd!J ]E6  
Q}2aBU.f  
int k=partition(data,i-1,j,data[j]); BYFvf(>  
SortUtil.swap(data,k,j); >uN{cohs  
if((k-i)>1) quickSort(data,i,k-1); 0 Ji>dr n  
if((j-k)>1) quickSort(data,k+1,j); !v;N@C3C  
8hZ+[E}  
} @-Tt<pl'L  
/** 6LrG+p`  
* @param data 0qqk:h  
* @param i k*d0ws#<l  
* @param j 9aFu51  
* @return +] >o@  
*/ Tz[ck 'k  
private int partition(int[] data, int l, int r,int pivot) { 3,=97Si=  
do{ F~2bCy[Z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *JDQaWzBd  
SortUtil.swap(data,l,r); z^j7wMQ  
} f^b.~jXSR}  
while(l SortUtil.swap(data,l,r); z'Atw"kA  
return l; NKd}g  
} I !=ew |  
'/%]B@!  
} HjAhz  
4t]ccqX*{  
改进后的快速排序: VAX@'iZr  
w{l}(:xPp  
package org.rut.util.algorithm.support; +sq'\Tbp  
vg[A/$gLM  
import org.rut.util.algorithm.SortUtil; v% 6uU  
3DRJl, v  
/** e` 9d&"  
* @author treeroot 5gYv CW&~  
* @since 2006-2-2 7yM=$"'d  
* @version 1.0 F_.rLgGY  
*/ CT,PQ  
public class ImprovedQuickSort implements SortUtil.Sort { GdHFgxI  
t% Sgw%f  
private static int MAX_STACK_SIZE=4096; A[:0?Ez=  
private static int THRESHOLD=10; Ut.%=o;&[  
/* (non-Javadoc) m/@ ;N,K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9.u}<m  
*/ 4zyN>f|  
public void sort(int[] data) { _ p%=RIR  
int[] stack=new int[MAX_STACK_SIZE]; uF,F<%d  
LH/lnrN  
int top=-1; |LhVANz  
int pivot; {o1 vv+i  
int pivotIndex,l,r;  @oE^(  
AX($LIy9P  
stack[++top]=0; g2 7 iE  
stack[++top]=data.length-1; E/[>#%@i  
q@k/"ee*?  
while(top>0){ KUJCkwQ  
int j=stack[top--]; pGz 5!d  
int i=stack[top--]; Rp.42v#ck  
'D_a2xo0  
pivotIndex=(i+j)/2; gySCK-(y  
pivot=data[pivotIndex]; IAyyRl\  
.n$c+{  
SortUtil.swap(data,pivotIndex,j); U9"g;t+/   
FM$$0}X  
file://partition #uTNf78X  
l=i-1; _L?MYkD  
r=j; )Y4;@pEU  
do{ 9o%k [n  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); e1cqzhI=nA  
SortUtil.swap(data,l,r); e}lF#$  
} tVfZ~q J  
while(l SortUtil.swap(data,l,r); CjR!dh1w_  
SortUtil.swap(data,l,j); eX)'C>4W  
B xAyjA6  
if((l-i)>THRESHOLD){ 3.?G,%S5.$  
stack[++top]=i; `/ <y0H  
stack[++top]=l-1; `Iwl\x[A  
} 3yGo{uW  
if((j-l)>THRESHOLD){ 7v'aw"~  
stack[++top]=l+1; J9aqmQj('  
stack[++top]=j; U{1%ldOJ%  
} xB5qX7*.  
co^bS;r  
} X~UrAG}_  
file://new InsertSort().sort(data); 5&)T[Q X`  
insertSort(data); p^.qwP\P  
} we:P_\6  
/** df\^uyD;  
* @param data ^^ >j2=  
*/ gXJtk;  
private void insertSort(int[] data) { 2i9FzpC3  
int temp; Ei>.eXUD5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RE._Ov>  
} } H#C<:A  
} t@X{qm:%Z  
} 8'WoG]E_  
r:{;HM+  
} oYx4+xH/  
<C1w?d$9I  
归并排序: edai2O  
wjtFZGx&  
package org.rut.util.algorithm.support; {Jbouj?V!  
+{~ cX] |  
import org.rut.util.algorithm.SortUtil; 'p_|Rw>  
u.yYE,9  
/** vVhSl$mW  
* @author treeroot Kz~E"?  
* @since 2006-2-2 C6"{-{H  
* @version 1.0 V36u%zdX5n  
*/ [_T6  
public class MergeSort implements SortUtil.Sort{ Ly46S  
h 8<s(WR  
/* (non-Javadoc) P*|qbY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h ?_@nQ!  
*/ ?_-5W9  
public void sort(int[] data) { sA~Ijg"6  
int[] temp=new int[data.length]; rS>@>8k2,  
mergeSort(data,temp,0,data.length-1); w`GjQIA  
} -M6#,Ji  
/+wCx#!  
private void mergeSort(int[] data,int[] temp,int l,int r){ /9b+I/xY"  
int mid=(l+r)/2; n  +v(t  
if(l==r) return ; "]T1DG"  
mergeSort(data,temp,l,mid); a#D \8;  
mergeSort(data,temp,mid+1,r);  sWyx_  
for(int i=l;i<=r;i++){ F4NM q&_  
temp=data; 'QSj-  
} 7Y?59 [  
int i1=l; _U|rTil  
int i2=mid+1; kfY. 9$(d  
for(int cur=l;cur<=r;cur++){ xLdkeuL[%  
if(i1==mid+1) (}RTHpD  
data[cur]=temp[i2++]; lLur.f  
else if(i2>r) / z m+  
data[cur]=temp[i1++]; g-pEt#  
else if(temp[i1] data[cur]=temp[i1++]; h e=A%s  
else g '+2bQ  
data[cur]=temp[i2++]; zYxA#TZL  
} Ts\PZQ!q  
} ! FVD_8  
RD6>\9  
} x.9[c m-!  
yxtfyf|9 '  
改进后的归并排序: ep6V2R  
6&"*{E  
package org.rut.util.algorithm.support; wG&Z7C b  
|w"G4J6ha  
import org.rut.util.algorithm.SortUtil; i,zZJ=a$  
a8YFH$Xh  
/** CZ!gu Y=  
* @author treeroot !5qV}5  
* @since 2006-2-2 w7E#mdW  
* @version 1.0 U#x`u|L&6  
*/ ~OMo$qt`lP  
public class ImprovedMergeSort implements SortUtil.Sort { |H(i)yu"5'  
(zPsA  
private static final int THRESHOLD = 10; _b`/QSL  
N(e>]ui  
/* a51}~V1  
* (non-Javadoc) ~Qd|.T  
* au E8 ^|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HBNX a  
*/ |hS^eK_  
public void sort(int[] data) { _1jbNQa  
int[] temp=new int[data.length]; \'r;1W  
mergeSort(data,temp,0,data.length-1); %+((F +[  
} 3, 3n  
B qo#cnlG  
private void mergeSort(int[] data, int[] temp, int l, int r) { G%junS'zt  
int i, j, k; as73/J6  
int mid = (l + r) / 2; ec,Bu7'8  
if (l == r) \=[38?QOY  
return; _H@8qR  
if ((mid - l) >= THRESHOLD) (QdLz5\  
mergeSort(data, temp, l, mid); cSBS38>  
else B1j^qoC.5  
insertSort(data, l, mid - l + 1); cm8co  
if ((r - mid) > THRESHOLD) g,G{%dGsk  
mergeSort(data, temp, mid + 1, r); | 2GrOM&S  
else iA|n\a~ny,  
insertSort(data, mid + 1, r - mid); hh$i1n  
4}Y? :R  
for (i = l; i <= mid; i++) { ?Ld:HE  
temp = data; sDvy(5  
} cJ>^@pd{  
for (j = 1; j <= r - mid; j++) { sC ?e%B  
temp[r - j + 1] = data[j + mid]; sY[!=`@  
} /g1;`F(MS/  
int a = temp[l]; ~<}?pDA}~  
int b = temp[r]; o{' J O3  
for (i = l, j = r, k = l; k <= r; k++) { i)/#u+Y1P  
if (a < b) { (S?qxW?  
data[k] = temp[i++]; aI;fNy /K  
a = temp; t]{, 7.S  
} else { |RBL5,t^  
data[k] = temp[j--]; a# Uk:O!  
b = temp[j]; [U$`nnp  
}  wH\ K'/  
} e +jp,>(v  
} RDeI l&  
Z1h6Y>j  
/** -^*8D(j*  
* @param data ]vuxeu[cu,  
* @param l 8/}S/$  
* @param i Y3ypca&P9  
*/ J! "m{ 8-  
private void insertSort(int[] data, int start, int len) { *CVI@:Q9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Snq0OxS[v  
} MM~4D  
} % C)|fDwN  
} l xP!WP  
} {M23a _t\  
'N&s$XB,  
堆排序: :4>LtfA  
@sRb1+nn  
package org.rut.util.algorithm.support; ?i\$U'2*z3  
}5d|y*  
import org.rut.util.algorithm.SortUtil; "/x/]Qx2  
Of  nN  
/** m:g%5' qDZ  
* @author treeroot m[w~h\FS  
* @since 2006-2-2 9S?b &]  
* @version 1.0 e63io0g>  
*/ q#0yu"<  
public class HeapSort implements SortUtil.Sort{ pW&8 =Ew  
vX*kvEG  
/* (non-Javadoc) C?rb}(m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ']sIU;h3  
*/ ZV!*ZpTe~  
public void sort(int[] data) { 9x14I2  
MaxHeap h=new MaxHeap(); s{fL~}Yz  
h.init(data); ai)?RF  
for(int i=0;i h.remove(); lC^?Jk[N  
System.arraycopy(h.queue,1,data,0,data.length); `J}FSUn\  
} ` kZ"5}li  
d 8z9_C-  
private static class MaxHeap{ L @8[.  
c- [IgX e  
void init(int[] data){ WWA!_  
this.queue=new int[data.length+1]; )IuwI#pm  
for(int i=0;i queue[++size]=data; +H _ /  
fixUp(size); .Zx7+`i  
} !)OA7%3m  
} <*opVy^  
%%Wn:c>  
private int size=0; 1k)`C<l  
VjSA& R  
private int[] queue; s3)T}52  
>kV=h?]Y  
public int get() { \U?{m)N  
return queue[1]; A:?w1"7gT  
} ^p~3H  
*%dWNvN4X  
public void remove() { }& 01=nY  
SortUtil.swap(queue,1,size--); n(\VP!u5r  
fixDown(1); Wp=:|J   
} 0urM@/j+  
file://fixdown P' k`H  
private void fixDown(int k) { +B OuU#  
int j; .:;#[Z{-  
while ((j = k << 1) <= size) { Z15b'^)?9  
if (j < size %26amp;%26amp; queue[j] j++; 4hV~ ir  
if (queue[k]>queue[j]) file://不用交换 ulXe;2  
break; KkZo|\V  
SortUtil.swap(queue,j,k); N4, !b_1  
k = j; )eWg2w]  
} t2z@"e   
} ":^cb =  
private void fixUp(int k) { ^^(4xHN  
while (k > 1) { Xx=.;FYk  
int j = k >> 1; GnW_^$Fs  
if (queue[j]>queue[k]) 3q1u9`4;  
break; V7>{,  
SortUtil.swap(queue,j,k); <V*M%YWs  
k = j; YwF\  
} {q BbzBG  
} o(5 ( ]bJ  
wEIAU  
} 7A>glZ/x  
!'%`g,,r  
} UyOoyyd.  
$@L}/MO  
SortUtil: YRP$tz+ _  
gx6$:j;   
package org.rut.util.algorithm; ZSW`/}Dp;  
f@J-6uQ7w  
import org.rut.util.algorithm.support.BubbleSort; C9 cQ} j:  
import org.rut.util.algorithm.support.HeapSort; 4";[Xr{pW  
import org.rut.util.algorithm.support.ImprovedMergeSort; h+Tt+ Q\  
import org.rut.util.algorithm.support.ImprovedQuickSort; ht^xc c  
import org.rut.util.algorithm.support.InsertSort; J+8T Ie  
import org.rut.util.algorithm.support.MergeSort; qXQ7Jg9  
import org.rut.util.algorithm.support.QuickSort; 2o-Ie/"d\  
import org.rut.util.algorithm.support.SelectionSort; )V*V  
import org.rut.util.algorithm.support.ShellSort; U*Pi%J  
r1X\$&  
/** }Z\PE0  
* @author treeroot 0Bhf(5  
* @since 2006-2-2 Q u@T}Ci  
* @version 1.0 +wg|~Lef h  
*/ L-(.v*  
public class SortUtil { fmq9u(!R  
public final static int INSERT = 1; ZfN%JJOz(  
public final static int BUBBLE = 2; SgPvQ'\  
public final static int SELECTION = 3; EXYr_$gRs  
public final static int SHELL = 4; W%cJ#R[o  
public final static int QUICK = 5; g"L$}#iTsl  
public final static int IMPROVED_QUICK = 6; fRd^@@,[  
public final static int MERGE = 7; v/WvT!6V`  
public final static int IMPROVED_MERGE = 8; Gd%E337d  
public final static int HEAP = 9; nc.X+dx:  
*f$wmZ5A  
public static void sort(int[] data) { WT>2eMK[  
sort(data, IMPROVED_QUICK); RgT|^|ZA  
} )]5}d$83  
private static String[] name={ }W k!):=y  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" QWV12t$v  
}; B>M@'  
Q{+&3KXH  
private static Sort[] impl=new Sort[]{ }Qm: g  
new InsertSort(), Ox1#}7`0>  
new BubbleSort(), R7d45Wl  
new SelectionSort(),  ,L}  
new ShellSort(), B @8 ]!  
new QuickSort(), (-U6woB6o  
new ImprovedQuickSort(),  mVuZ} `  
new MergeSort(), /a!M6:,pX  
new ImprovedMergeSort(), /^<Uy3F[p  
new HeapSort() .d>TU bR;  
}; ^p 4 33  
f?A1=lm~  
public static String toString(int algorithm){ qx~-(|s`H  
return name[algorithm-1]; nuip  
} &%Lps_+fJ  
Th6xwMq  
public static void sort(int[] data, int algorithm) { 8vLaSZ="[  
impl[algorithm-1].sort(data); e1 j3X\ \  
} i7/I8y  
Y[ciT)  
public static interface Sort { $Dm2>:Dmt  
public void sort(int[] data); JXIxk"m  
} IE|$mUabm  
>qBQfz:U>  
public static void swap(int[] data, int i, int j) { A+&^As2  
int temp = data; xQ=sZv^M  
data = data[j]; jr<`@  
data[j] = temp; MM*B.y~TxZ  
} aI l}|n"  
} *|T]('xwC  
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