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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。 &[yC M!  
插入排序: 5 3pW:`  
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package org.rut.util.algorithm.support;  ]]p\1G  
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import org.rut.util.algorithm.SortUtil; Lv+{@)  
/** !w7/G  
* @author treeroot mc]+j,d  
* @since 2006-2-2 F w{:shC  
* @version 1.0 '6zZ`Ll9  
*/ -UEi  
public class InsertSort implements SortUtil.Sort{ GkOk.9Y,5  
wXQu%F3  
/* (non-Javadoc) N+.Nu= +i2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -gGw_w?)(  
*/ ]fb@>1 jp  
public void sort(int[] data) { =*fq5v  
int temp; \zU<o~gs  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !v2/sq$G  
} |2'WSAWG  
} ]Q FI>  
} NioqJG?p  
dg.1{6HM  
} R\cx-h*  
o;c"-^>  
冒泡排序: emQc%wd{  
Qw_uwQZ)  
package org.rut.util.algorithm.support; KS#A*BRQ  
&Sb)a  
import org.rut.util.algorithm.SortUtil; Q>L(=j2t  
L)M{S3q,  
/** cKYvNM  
* @author treeroot dQ;8,JzIw&  
* @since 2006-2-2 r]6+&K  
* @version 1.0 NtGJpT4YX  
*/ ~> )>hy)  
public class BubbleSort implements SortUtil.Sort{ =WUNBav  
`(j~b=PP  
/* (non-Javadoc) @V>]95RX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <IIz-6*V  
*/ ?9xWTVa8  
public void sort(int[] data) { 4Kt0}W  
int temp; nt"\FZ*;3  
for(int i=0;i for(int j=data.length-1;j>i;j--){ xVsI#`<a  
if(data[j] SortUtil.swap(data,j,j-1); 0]f/5jvLj  
} 0++RxYFCL  
} .0,G4k/yv  
} U;kN o3=  
} Wlg1t~1=  
pj7a l;  
} ;^JMX4[  
pzt<[;  
选择排序: Tcv/EST  
]Ky`AG`2~  
package org.rut.util.algorithm.support; 9e.v[K~  
W $mw9  
import org.rut.util.algorithm.SortUtil; gcI<bY  
VI|2vV6?  
/** tSni[,4Kq  
* @author treeroot [g`4$_9S  
* @since 2006-2-2 mb`h  
* @version 1.0 vH}VieU  
*/ PDH|=meXM  
public class SelectionSort implements SortUtil.Sort { B*)mHSs2  
F<iV;+  
/* w('}QB`xad  
* (non-Javadoc) Ve9) ?=!  
* 7Ou]!AOhG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5w~ 0Q  
*/ Y_C6*T%  
public void sort(int[] data) { GB Vqc!d  
int temp; "PS ) "t  
for (int i = 0; i < data.length; i++) { >`[+24e  
int lowIndex = i; jq#`cay!  
for (int j = data.length - 1; j > i; j--) { =oq=``%  
if (data[j] < data[lowIndex]) { 2zbn8tO  
lowIndex = j; 6*EIhIQ(  
} (QojIdHt  
} I d8MXdV  
SortUtil.swap(data,i,lowIndex); a".iVf6y  
} ,*9gy$  
} rmC7!^/  
[5!{>L`  
} OrL4G `O  
*>:<  
Shell排序: (]?M=?0\  
cM,g, E}  
package org.rut.util.algorithm.support; 'ahZ*@kr  
fGA#0/_`  
import org.rut.util.algorithm.SortUtil; a*&&6Fo  
X>pCkGE  
/** oO7)7$|1  
* @author treeroot x&JD~,Y  
* @since 2006-2-2 u^Ktz DmL  
* @version 1.0 }G^'y8U  
*/ XL;WU8>  
public class ShellSort implements SortUtil.Sort{ K:VZ#U(_  
9D,!]  
/* (non-Javadoc) 8N |K   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +Y;hVc E9  
*/ 1A* "v  
public void sort(int[] data) { >[nR$8_J-l  
for(int i=data.length/2;i>2;i/=2){ 0N]\f.=`  
for(int j=0;j insertSort(data,j,i); b>#=7;  
} (!efaj  
} VV 54$a  
insertSort(data,0,1); @KHY8y7  
} 4hfq7kq7(  
PRB lf  
/** 'R- g:X\{  
* @param data JrX. f  
* @param j &U`ug"/k  
* @param i }7xcHVO8-  
*/ %<p/s;eu  
private void insertSort(int[] data, int start, int inc) { M ' %zA;Wl  
int temp; V[Sj+&e&  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d.Ccc/1-  
} gLFTnMO  
} k!bJ&} Q(b  
} 0V86]zSo  
<c<!|<x  
} ox\D04:M  
xoGrXt9&  
快速排序: -0]%#(E%`h  
.LnknjC  
package org.rut.util.algorithm.support; EDh-pK  
2 J3/Eu  
import org.rut.util.algorithm.SortUtil; >vYb'%02  
xsy45az<ip  
/** Ro `Xs.X  
* @author treeroot B&1E&Cv_8  
* @since 2006-2-2 *WFd[cKE  
* @version 1.0 8TU(5:xJo  
*/ t. (6tL]  
public class QuickSort implements SortUtil.Sort{ suFk<^3  
W:9l"'  
/* (non-Javadoc) tGbx/$Y   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s5Wb iOF  
*/ <$a-.C5  
public void sort(int[] data) { !h<O c!9  
quickSort(data,0,data.length-1); Dbq/t^  
} ^-|~c`&}B  
private void quickSort(int[] data,int i,int j){ %XZhSmlf  
int pivotIndex=(i+j)/2; 3-1a+7fD  
file://swap e{XzUY6  
SortUtil.swap(data,pivotIndex,j); rKT.~ZP\  
_V0%JE'  
int k=partition(data,i-1,j,data[j]); cnw+^8  
SortUtil.swap(data,k,j); Of$R+n.  
if((k-i)>1) quickSort(data,i,k-1); #N~1Y e  
if((j-k)>1) quickSort(data,k+1,j); Xh3b=i|K  
d+ZXi'  
} dD~H ft  
/** 4sBvW  
* @param data G%zJ4W%  
* @param i 3p?nQ O)L  
* @param j ;4GGXT++L  
* @return z}Us+>z+jc  
*/ $;~YgOVZ5  
private int partition(int[] data, int l, int r,int pivot) { kUT^o  
do{ X%N!gy  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :O,r3O6  
SortUtil.swap(data,l,r); I3'UrKKO  
} #Ak|p#7 ^  
while(l SortUtil.swap(data,l,r); oR,zr  
return l; ct OCj$$u  
} SyT{k\[  
$/@  L  
} ("}C& 6)cB  
g>w {{G  
改进后的快速排序: GRVF/hPn  
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package org.rut.util.algorithm.support; w:iMrQeJg  
N`3^:EJL8  
import org.rut.util.algorithm.SortUtil;  2+S+Y%~  
4GG>n  
/** j{2 0  
* @author treeroot AkdO:hVtG  
* @since 2006-2-2 J P5en  
* @version 1.0 ocMTTVo  
*/ ;T8(byH ?  
public class ImprovedQuickSort implements SortUtil.Sort { =1(7T.t  
%|^,Q -i,  
private static int MAX_STACK_SIZE=4096; I&gd"F _v}  
private static int THRESHOLD=10; 8O60pB;4  
/* (non-Javadoc) .3VL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gyV`]uqG  
*/ &5bIM>)v  
public void sort(int[] data) { }|N88PN  
int[] stack=new int[MAX_STACK_SIZE]; yGrnzB6|  
i gjn9p&_  
int top=-1; 72J=_d>+  
int pivot; ` "-P g5  
int pivotIndex,l,r; e 8oAGh"  
}LQV2 hKTG  
stack[++top]=0; 1ah,Zth2  
stack[++top]=data.length-1;  7( Z9\  
ZWzr8oY)  
while(top>0){ "UhE'\()  
int j=stack[top--]; IMM sOl  
int i=stack[top--]; 0dS(g&ZR  
:%j"l7=>  
pivotIndex=(i+j)/2; 2EN}"Du]mj  
pivot=data[pivotIndex]; ADB)-!$xoi  
v@8SMOe %  
SortUtil.swap(data,pivotIndex,j); P$N5j~*  
gzH;`,  
file://partition F$|:'#KN  
l=i-1; Tz.okCo]z  
r=j; V m8dX?  
do{ D+! S\~u  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); v*.iNA;&i  
SortUtil.swap(data,l,r); \-{$IC-L  
} !wfUD2 K1  
while(l SortUtil.swap(data,l,r); +~o f#  
SortUtil.swap(data,l,j); i O?f&u  
+|8.ymvm  
if((l-i)>THRESHOLD){ G|-RscPe  
stack[++top]=i; =A{'57yP  
stack[++top]=l-1; =5fY3%^b{  
} 3PL0bejaT7  
if((j-l)>THRESHOLD){ +j+ v(-  
stack[++top]=l+1; .m>Qlh  
stack[++top]=j; q@XJ,e1A  
} ,,80nW9E  
QJiH^KY6  
} B"#pvJN  
file://new InsertSort().sort(data); 3vAP&i'I  
insertSort(data); tX1`/}``  
} O7LJ-M  
/** 5rCJIl.  
* @param data be]/ROP>H  
*/ s"w^E\ >6  
private void insertSort(int[] data) { KydAFxUb  
int temp; !Y7$cU &  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,WnZ^R/n  
} tQUKw@@Q  
} ;pOV; q3j  
} L\c3D|  
/uDcJ1u66  
} I!u=.[5zdC  
;~[}B v  
归并排序: v UO[V$rx  
45< gO1  
package org.rut.util.algorithm.support; fGs\R]  
O&;d82IA{  
import org.rut.util.algorithm.SortUtil; `/N={  
52Dgul  
/** :)B1|1  
* @author treeroot QkHG`yW  
* @since 2006-2-2 +|pYu<OY  
* @version 1.0 i`];xNR'  
*/ S*J\YcqSC  
public class MergeSort implements SortUtil.Sort{ p8YOow7)  
&OXx\}>MW  
/* (non-Javadoc) !^0vi3I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Td{}vbIh  
*/ iT O Y  
public void sort(int[] data) { Cd]A1<6s  
int[] temp=new int[data.length]; ;YMg 4Cs  
mergeSort(data,temp,0,data.length-1); HUCJA-OZGL  
} tf8xc  
eK*oV}U-k  
private void mergeSort(int[] data,int[] temp,int l,int r){ FyPG5-  
int mid=(l+r)/2; cwtlOg  
if(l==r) return ; $ #GuV'  
mergeSort(data,temp,l,mid); ]$^HGmP  
mergeSort(data,temp,mid+1,r); RF'nwzM3  
for(int i=l;i<=r;i++){ e m)%U  
temp=data; jA^Dk$  
} !dh:jPpKq  
int i1=l; ^P]5@dv  
int i2=mid+1; l`:u5\ rM  
for(int cur=l;cur<=r;cur++){ g&EK^q  
if(i1==mid+1) }m5()@Q}a  
data[cur]=temp[i2++]; cTRtMk%^  
else if(i2>r) "zQ<)Q]U  
data[cur]=temp[i1++]; EfpMzD7/(  
else if(temp[i1] data[cur]=temp[i1++]; BtKor6ba  
else wqV"fZA\]  
data[cur]=temp[i2++];  iD])E/  
} ;~d$O M  
} H8dS]N~[Y  
9^?muP<A  
} CQa8I2VF (  
&HAu;u@  
改进后的归并排序: ^EkxZ4*g  
Q^3{L\6_  
package org.rut.util.algorithm.support; [uHC AP  
&=n/h5e0t&  
import org.rut.util.algorithm.SortUtil; =>evkaj  
wQd8/&mmk  
/** }BL7P-km  
* @author treeroot w{2CV\^>5  
* @since 2006-2-2 33D2^ Sf6"  
* @version 1.0 $0un`&W  
*/ &k)v/  
public class ImprovedMergeSort implements SortUtil.Sort { BKb#\(95*  
[{GN#W|AGP  
private static final int THRESHOLD = 10; p[].4_B;  
zF>;7'\x  
/* =jS$piw.  
* (non-Javadoc) AJ& j|/  
* t0@AfO.'1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p8)R#QWz9  
*/ 2fu<s^9dh  
public void sort(int[] data) { )1Y?S;  
int[] temp=new int[data.length]; P2aFn=f  
mergeSort(data,temp,0,data.length-1); uP r!;'J=  
} E"S# d&9  
u7RlxA:  
private void mergeSort(int[] data, int[] temp, int l, int r) { $cJ fdE  
int i, j, k; _(8#  
int mid = (l + r) / 2; Cojs;`3iF:  
if (l == r) ]adgOlM  
return; Do\j_  
if ((mid - l) >= THRESHOLD) ' 7oCWHq[  
mergeSort(data, temp, l, mid); A/UOcl+N  
else _6r[msH"  
insertSort(data, l, mid - l + 1); ~xsJML  
if ((r - mid) > THRESHOLD) %Y=r5'6l  
mergeSort(data, temp, mid + 1, r); 6m(? (6+;K  
else  4uMMf  
insertSort(data, mid + 1, r - mid); K\fD';  
+75"Q:I  
for (i = l; i <= mid; i++) { ^0}wmxDq  
temp = data; 6S3D#SY  
} m;{HlDez  
for (j = 1; j <= r - mid; j++) { Tsb}\  
temp[r - j + 1] = data[j + mid]; S(xs;tZ  
} sZr \mQ~  
int a = temp[l]; lZ[J1:%  
int b = temp[r]; U/s Z1u-  
for (i = l, j = r, k = l; k <= r; k++) { Db*b"/]  
if (a < b) { oA~0"}eS  
data[k] = temp[i++]; 6Y,&q|K  
a = temp; {^N,$,Ab.  
} else { '/ Hoq  
data[k] = temp[j--]; *C+[I  
b = temp[j]; a.gMH uL  
} RHNAHw9  
} Ij.mLO]  
} LA59O@r  
" j?xgV  
/** p"~@q}3  
* @param data id : ^|  
* @param l $V?sD{=W  
* @param i _xi &%F/  
*/ 7_qsVhh]$E  
private void insertSort(int[] data, int start, int len) { =EA @  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); rKslgZhQ  
} M!!vr8}  
} \I4Uj.'> \  
} `RE>gX  
} GeB&S!F  
_eBNbO_J  
堆排序: *?uUP  
t B`"gC~  
package org.rut.util.algorithm.support; DO*6gzW  
!.O[@A\.-  
import org.rut.util.algorithm.SortUtil; N2[jBy8M  
PyHL`PZZ  
/** <kwF<J  
* @author treeroot \eQPv kx2  
* @since 2006-2-2 A=|a!N/  
* @version 1.0 $t"QLsk0  
*/ tS3&&t  
public class HeapSort implements SortUtil.Sort{ f B]2"(  
S["r @<  
/* (non-Javadoc) Y`-q[F?\y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e<`?$tZ3   
*/ !J<0.nO/:  
public void sort(int[] data) { !XI9evJw  
MaxHeap h=new MaxHeap(); UCj+V@{  
h.init(data); u R5h0Fi  
for(int i=0;i h.remove(); 4,X CbcC  
System.arraycopy(h.queue,1,data,0,data.length); }.9a!/@Aj  
} G^K;+&T  
P2s\f;Dwr  
private static class MaxHeap{ &K[~Ab_  
$/#[,1  
void init(int[] data){ BU>R<A5h  
this.queue=new int[data.length+1]; |G6'GTwZD  
for(int i=0;i queue[++size]=data; c>/7E-T  
fixUp(size); Y|hd!C-x  
} -:45Q{u/  
} ?^7X2 u$nm  
w7pX]<?R"  
private int size=0; AFYdBK]  
X#ha*u~U  
private int[] queue; R!X+-  
wnXU=  
public int get() { ttlMZLX{TJ  
return queue[1]; FrLv%tK|  
} OQ<;w  
j8^ #698X  
public void remove() { /#eS3`48  
SortUtil.swap(queue,1,size--); lm&^`Bn)  
fixDown(1); z}$.A9yn  
} 4JO 16  
file://fixdown upeioC q  
private void fixDown(int k) { BAi0w{  
int j; c3PA<q[  
while ((j = k << 1) <= size) { L|-|DOgw  
if (j < size %26amp;%26amp; queue[j] j++; ? }`mQ<~  
if (queue[k]>queue[j]) file://不用交换 ]E DC s?,  
break; b~YIaD[Z  
SortUtil.swap(queue,j,k); 368 g> /#'  
k = j; w&VDe(:~  
} &l_}yf"v  
} pSYEC,0B  
private void fixUp(int k) { r5(efTgAd+  
while (k > 1) { ?`kZ6$  
int j = k >> 1; Q:y'G9b  
if (queue[j]>queue[k]) j:2 F97  
break; _E6N*ORV  
SortUtil.swap(queue,j,k); ]8Xip/uE  
k = j; }m Ub1b  
} (q}Li rR  
} wPcEvGBN=  
`@0AGSzUv  
} 3%Q9521  
u'DpZ  
} "i*gJFW|  
#!#s7^%K&  
SortUtil: ZYt<O  
%yl17:h#  
package org.rut.util.algorithm; JZ:yPvJ  
e VQ-?DK  
import org.rut.util.algorithm.support.BubbleSort; j}(m$j'  
import org.rut.util.algorithm.support.HeapSort; qss )5a/x.  
import org.rut.util.algorithm.support.ImprovedMergeSort; |~18MW  
import org.rut.util.algorithm.support.ImprovedQuickSort; )24M?R@r  
import org.rut.util.algorithm.support.InsertSort; P6'Se'f8  
import org.rut.util.algorithm.support.MergeSort; i*!2n1c[  
import org.rut.util.algorithm.support.QuickSort; iY&I?o!Ch  
import org.rut.util.algorithm.support.SelectionSort; "{t]~urLd  
import org.rut.util.algorithm.support.ShellSort; ?Drq!?3PDc  
v#X#F9C  
/** A%^7D.j  
* @author treeroot |z:4T%ES  
* @since 2006-2-2 difX7)\  
* @version 1.0 _G25$%/LU  
*/ a1_o  
public class SortUtil { ]bpgsW:Xu  
public final static int INSERT = 1; S)4p'cUwq  
public final static int BUBBLE = 2; hv\Dz*XTs0  
public final static int SELECTION = 3; E\;%,19Ob  
public final static int SHELL = 4; 3hUP>F8  
public final static int QUICK = 5; FC+h \  
public final static int IMPROVED_QUICK = 6; lNWP9?X  
public final static int MERGE = 7; ~#}T|  
public final static int IMPROVED_MERGE = 8; wp> z04  
public final static int HEAP = 9; v+SdjFAY  
UEfY'%x  
public static void sort(int[] data) { v7`{6Pf_$  
sort(data, IMPROVED_QUICK); B<,7!:.II  
} lmL$0{Yr  
private static String[] name={ qc\D=3 #Yp  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Qh-:P`CN  
}; Zzz94`  
257$ !  
private static Sort[] impl=new Sort[]{ (+/d*4  
new InsertSort(), ylQj2B,CB  
new BubbleSort(), 10OkrNQ  
new SelectionSort(), _:p-\Oo.  
new ShellSort(), PiCGZybCA  
new QuickSort(), ;DR5?N/a  
new ImprovedQuickSort(), &/"a E  
new MergeSort(), K :~tZ  
new ImprovedMergeSort(), ftl?x'P%  
new HeapSort() a'dlA da  
}; Ot:}Ncq^\O  
VO=Ibu&X  
public static String toString(int algorithm){ =+ >>l0=_v  
return name[algorithm-1];  [)~1Lu  
} ,-8 -Y>[  
&vn2u bauS  
public static void sort(int[] data, int algorithm) { e6J^J&`|4  
impl[algorithm-1].sort(data); Gsb^gd  
} ^+CHp(X  
E]GbLU;TH  
public static interface Sort { [0]A-#J  
public void sort(int[] data); cBZEyy&  
} : MjDcI~  
%DXBl:!Y`  
public static void swap(int[] data, int i, int j) { LCtVM70  
int temp = data; m|c [C\)By  
data = data[j];  HG?+b  
data[j] = temp; [3nWxFz$R  
} qIsf!1I?  
} Z${eDl6i  
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