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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。 PB\(=  
插入排序: gZ3u=uME  
n`B:;2X,  
package org.rut.util.algorithm.support; Ct<udO  
H7&8\ FNa  
import org.rut.util.algorithm.SortUtil; FF`T\&u  
/**  9X+V4xux  
* @author treeroot wj$<t'MN  
* @since 2006-2-2 ~rqCN,=d  
* @version 1.0 urs,34h  
*/ .LnGL]/  
public class InsertSort implements SortUtil.Sort{ q.^;!f1  
8?#/o c  
/* (non-Javadoc) rK6l8)o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i4Q@K,$  
*/ O'p9u@kc  
public void sort(int[] data) { Uou1mZz/  
int temp; #?aPisV X>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mUAi4N  
} a8e6H30Sm  
} T9E+\D  
} Tj` ,Z5vy  
w,p PYf/t  
} >-RQ]?^  
~OYiq}g  
冒泡排序: x*\Y)9Vgy  
}#RakV4  
package org.rut.util.algorithm.support; zOAd~E  
%8B}Cb&2c  
import org.rut.util.algorithm.SortUtil; A7Cm5>Y_S  
kYP#SH/  
/** CAig ]=2'  
* @author treeroot #1A.?p  
* @since 2006-2-2 !OhC/f(GBZ  
* @version 1.0 R6<X%*&%  
*/ \_VA 50  
public class BubbleSort implements SortUtil.Sort{ h ohfE3rd  
T[w]o}>cW  
/* (non-Javadoc) _2Zx?<] 2E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h9&0Z +zs  
*/ !3c\NbU  
public void sort(int[] data) { 1Z/(G1  
int temp; a{'vN93  
for(int i=0;i for(int j=data.length-1;j>i;j--){ g]l'' 7G  
if(data[j] SortUtil.swap(data,j,j-1); cN-?l7  
} gS!:+G%  
} t9GR69v:?  
} ^,lIK+#Elz  
} TPQ%L@^ L+  
wv>^0\o  
} htO +z7  
Y!aSs3c  
选择排序: >NGj =L<  
<[a=ceL]|  
package org.rut.util.algorithm.support; r!|6:G+Q  
WH#1 zv  
import org.rut.util.algorithm.SortUtil; > ym,{EHK  
"b~+;<}Q  
/** r Xt}6[S  
* @author treeroot g>E LGG |Q  
* @since 2006-2-2 TM__I\+Q  
* @version 1.0 60^`JVGWH  
*/ p;`>e>$  
public class SelectionSort implements SortUtil.Sort { M!siK2  
58}U^IW  
/* 6IN e@  
* (non-Javadoc) hIYNhZv  
* y1jCg%'H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )W,aN)1)  
*/ 5zK4Fraf  
public void sort(int[] data) { K(e$esLs-  
int temp; 1SQ3-WU s  
for (int i = 0; i < data.length; i++) { h6L&\~pf  
int lowIndex = i; D%[mWc@1I  
for (int j = data.length - 1; j > i; j--) { r(>@qGN  
if (data[j] < data[lowIndex]) { k>Is:P  
lowIndex = j; VD;01"#'  
} `f,/`''R  
} *nT<m\C6  
SortUtil.swap(data,i,lowIndex); t5^{D>S1  
} %?1ew  
} rK 8lBy:<  
XW 2b|%T  
} ol\Utq,  
%Bj\W'V&p  
Shell排序: <)C#_w)-  
np|Sy;:  
package org.rut.util.algorithm.support; M><yGaaX/  
`$Y.Y5mGtJ  
import org.rut.util.algorithm.SortUtil; &~cBNw|  
WMDl=6  
/** gi3F` m  
* @author treeroot /cUO$m o  
* @since 2006-2-2 @W.S6;GA\  
* @version 1.0 <q58uuK  
*/ ^`i#$  
public class ShellSort implements SortUtil.Sort{ ^x]r`b  
:I]Mps<  
/* (non-Javadoc) B9_ X;c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !NK1MU?T)  
*/ ~Py`P'+  
public void sort(int[] data) { ;DQ ZT  
for(int i=data.length/2;i>2;i/=2){ A7 {\</Z  
for(int j=0;j insertSort(data,j,i); R3f89  
} A;q9rD,_  
} 3oj' ytxN  
insertSort(data,0,1); J/`<!$<c  
} Ot0ap$&  
tH@Erh|%  
/** #Qw0&kM7I  
* @param data .fqN|[>  
* @param j ?6!JCQJ<  
* @param i dZl5Ic  
*/ )N{Pw$l_  
private void insertSort(int[] data, int start, int inc) { G{~J|{t\yz  
int temp; (Bb5?fw  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 5X:AbF  
} 6D;Sgc5"  
} G6Axs1a  
} fivw~z|[@  
zy?|ODM  
} 3@_xBz,I.  
0(}t8lc  
快速排序: f].h^ ~.q  
PA{PD.4Du  
package org.rut.util.algorithm.support; dw>C@c#"  
_ gR;=~S  
import org.rut.util.algorithm.SortUtil; KJUH(]>F  
(*9$`!wS  
/** C\3rJy(VJ  
* @author treeroot FW;?s+Uyx  
* @since 2006-2-2 ] Jg&VXrH  
* @version 1.0 4HXo>0  
*/ FBX'.\@`  
public class QuickSort implements SortUtil.Sort{ Wx%H%FeK  
kOrZv,qFG[  
/* (non-Javadoc) S/hQZHZHg,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ux!p8  
*/ `6(S^P  
public void sort(int[] data) { IVnHf_PzF  
quickSort(data,0,data.length-1); m#Jmdb_  
} |)DGkOtd  
private void quickSort(int[] data,int i,int j){ HXC ;Np  
int pivotIndex=(i+j)/2; sRR( `0Zp  
file://swap =+-UJo5  
SortUtil.swap(data,pivotIndex,j); 8}x:`vDK  
|-67 \p]  
int k=partition(data,i-1,j,data[j]); <]t%8GB2V  
SortUtil.swap(data,k,j); QD&`^(X1p  
if((k-i)>1) quickSort(data,i,k-1); u(.e8~s8  
if((j-k)>1) quickSort(data,k+1,j); B2vh-%63  
z=\&i\>;Z+  
}  :A_@,Q  
/** vkV0On  
* @param data a 7 V-C  
* @param i *!t/"b  
* @param j CJx|?yK2  
* @return ;u ({\K  
*/ ,.8KN<A2]'  
private int partition(int[] data, int l, int r,int pivot) { vzAaxk%  
do{ qH>d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); oUlY?x1  
SortUtil.swap(data,l,r); @ CL{D:d  
} Y;M|D'y+  
while(l SortUtil.swap(data,l,r); 1z4OI6$Af  
return l; BsDn5\ q  
} [ -K&R  
^ig' bw+WS  
} !dnH 7 "  
OU_gdp  
改进后的快速排序: M#6W(|V/  
7hcYD!DS  
package org.rut.util.algorithm.support; Wq&if_  
;?i W%:_,  
import org.rut.util.algorithm.SortUtil; %3-y[f  
Np9<:GF1  
/** zrgk]n;Pq  
* @author treeroot BoWg0*5xb  
* @since 2006-2-2 dt]-,Y  
* @version 1.0 1N-\j0au  
*/ Y\k#*\'Y~  
public class ImprovedQuickSort implements SortUtil.Sort { z'n:@E  
b94DJzL1z  
private static int MAX_STACK_SIZE=4096; |v%YQ R  
private static int THRESHOLD=10; %)W2H^  
/* (non-Javadoc) &)ChQZA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Do7Tj  
*/ xGg )Y#  
public void sort(int[] data) { F^BS/Yag  
int[] stack=new int[MAX_STACK_SIZE]; lvz7#f L~  
azp):*f("  
int top=-1; P l]O\vh  
int pivot; <{cQM$ #  
int pivotIndex,l,r; \'D0'\:vz  
!CT5!5T  
stack[++top]=0; Qd$nH8EDY  
stack[++top]=data.length-1; Rtl"Ub@HV  
=s2*H8]  
while(top>0){ `(V3:F("@  
int j=stack[top--]; q"J]%zO  
int i=stack[top--]; sIGMA$EK  
S`0(*A[W*  
pivotIndex=(i+j)/2; u|TeE\0  
pivot=data[pivotIndex]; a~}OZ&PG  
1};Stai'  
SortUtil.swap(data,pivotIndex,j); \&3+D8H>n  
zP8lN(LA  
file://partition d.d/<  
l=i-1; Id .nu/  
r=j; pJ"qu,w  
do{ ?M9=yA  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ChPmX+.i_  
SortUtil.swap(data,l,r); vMH  
} Ckuh:bs  
while(l SortUtil.swap(data,l,r); cf20.F{<  
SortUtil.swap(data,l,j); 7' V@+5  
ZDYJ\}=  
if((l-i)>THRESHOLD){ EgCAsSx(  
stack[++top]=i; K`zdc`/  
stack[++top]=l-1; m@v\(rT.  
} IK=a*}19L  
if((j-l)>THRESHOLD){ |&)dh<  
stack[++top]=l+1; h2]P]@nW;W  
stack[++top]=j; SsDmoEeB[  
} ~IBP|)WA-  
qiBVG H  
} :>f )g  
file://new InsertSort().sort(data); @,7GaK\  
insertSort(data); Ai?*s%8v  
} 37.S\ gO]  
/** K;H&n1  
* @param data YfKdR"i+.  
*/ ~-Qw.EdC  
private void insertSort(int[] data) { A[{yCn`tM  
int temp;  {Gk1vcq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g@!V3V  
} plstZ,#j  
} 08\, <9  
} eJX9_6m-  
_|I#{jK  
} 0 ZKx<]!  
$Sip$\+*  
归并排序: LCKV>3+_#  
i3mcx)d@H  
package org.rut.util.algorithm.support; y/7\?qfTk  
xdt- ;w|  
import org.rut.util.algorithm.SortUtil; Q\7h`d%)  
-zeG1gr3  
/** Jk n>S#SZ  
* @author treeroot G<J?"oQbRT  
* @since 2006-2-2 =>v#4zFd  
* @version 1.0 !F'YDjTot  
*/ wc4{)qDE  
public class MergeSort implements SortUtil.Sort{ By4<2u38u  
'-XXo=>0MV  
/* (non-Javadoc) 2eY_%Y0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bwMm#f  
*/ o|<!"AD7  
public void sort(int[] data) { 8wFJ4v3  
int[] temp=new int[data.length]; B%6)}Nl[  
mergeSort(data,temp,0,data.length-1); Z=o2H Bm7  
} 3bH'H*2  
}9OC,Y8?D  
private void mergeSort(int[] data,int[] temp,int l,int r){ N<VJ(20y  
int mid=(l+r)/2; y??XIsF  
if(l==r) return ; \X D6 pr@  
mergeSort(data,temp,l,mid); d/kv|$XW  
mergeSort(data,temp,mid+1,r); ndMA-`Ny,  
for(int i=l;i<=r;i++){ dkTX  
temp=data; &n:.k}/P  
} QlU8uI[dk  
int i1=l; &B1WtW  
int i2=mid+1; bK&+5t&  
for(int cur=l;cur<=r;cur++){ GGs}i1m  
if(i1==mid+1) HQhM'x  
data[cur]=temp[i2++]; OA;XiR$xP  
else if(i2>r) Ai3*QX  
data[cur]=temp[i1++]; I,vJbvvl!  
else if(temp[i1] data[cur]=temp[i1++]; lX4 x*  
else 4vB<fPN  
data[cur]=temp[i2++]; $uVHSH5l  
} ENs&RZ;  
} t-bB>q#3>  
UySZbmP48  
} 7~.9=I'A  
V {ddr:]4  
改进后的归并排序: u\;C;I-? '  
YUy0!`!`  
package org.rut.util.algorithm.support; F{;((VboN  
+VOK%8,p  
import org.rut.util.algorithm.SortUtil; BUXpC xQ  
KB(8f*  
/** M%P:n/j  
* @author treeroot )1`0PJoHE  
* @since 2006-2-2 w_K1]<Q*  
* @version 1.0 m~0/&RA  
*/ $B5aje}i  
public class ImprovedMergeSort implements SortUtil.Sort { tFOhL9T  
w+u3*/Zf  
private static final int THRESHOLD = 10; Txb#C[`  
|t#)~Oo  
/* j{+.tIzpq[  
* (non-Javadoc) [/41% B2  
* /"Uqa,{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R8Fv{7]c  
*/ 'e'cb>GnA  
public void sort(int[] data) { {fT6O&br  
int[] temp=new int[data.length]; Z o(rTCZX  
mergeSort(data,temp,0,data.length-1); z5*'{t)  
} JOeeU8C  
?J >  
private void mergeSort(int[] data, int[] temp, int l, int r) { 7?w*]  
int i, j, k; Ne1$ee. NE  
int mid = (l + r) / 2; Si;H0uPO  
if (l == r) MeZf*' J  
return; K_Eux rPn  
if ((mid - l) >= THRESHOLD) 5MJS ~(  
mergeSort(data, temp, l, mid); #BH*Z(  
else `1IgzKL9  
insertSort(data, l, mid - l + 1); R`E~ZWC4V  
if ((r - mid) > THRESHOLD) $c(nF01  
mergeSort(data, temp, mid + 1, r); -;WGS o  
else TJXT-\Vk  
insertSort(data, mid + 1, r - mid); U26}gT)  
5vnrA'BhBU  
for (i = l; i <= mid; i++) { ~6LN6}~|.  
temp = data; @*KZ}i@._  
} 5 #E`=C%  
for (j = 1; j <= r - mid; j++) { &`2)V;t  
temp[r - j + 1] = data[j + mid]; 8$Y9ORs4  
} lA8`l>I  
int a = temp[l]; di )L[<$DY  
int b = temp[r]; :P0mx   
for (i = l, j = r, k = l; k <= r; k++) { iSs:oH3l  
if (a < b) { 3eQ&F~S  
data[k] = temp[i++]; `*1p0~cu  
a = temp; p>8D;#Hm L  
} else { 0{-q#/  
data[k] = temp[j--]; NyNXP_8  
b = temp[j]; ' %o#q6O  
} WX3-\Y5E  
} "87:?v[[1  
} =fFP5e ['  
sdw(R#GE  
/** =]0&i]z[.  
* @param data v0.#Sl-  
* @param l BR;D@R``}  
* @param i t'k$&l}+  
*/ 3AN/ H  
private void insertSort(int[] data, int start, int len) { XUuN )i  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $*=<Yw4  
} bY~pc\V:`w  
} 'E""amIJ  
} oe-\ozJ0  
} L) T (<  
Qh\60f>0  
堆排序: 9InVQCf2J  
4^|3TntO  
package org.rut.util.algorithm.support; svH !1 b  
'm kLCS  
import org.rut.util.algorithm.SortUtil; II{&{S'HU  
Qd3 j%(  
/** Wg]Qlw`\|  
* @author treeroot 5VU2[ \  
* @since 2006-2-2 I51@QJX  
* @version 1.0 NqWdRU  
*/ nZYBE030  
public class HeapSort implements SortUtil.Sort{ /f;~X"!  
ak!G8'w  
/* (non-Javadoc) KJ4.4Zq{c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P( 8OQL:  
*/ Qq|57X)P*  
public void sort(int[] data) { f(MO_Sj]  
MaxHeap h=new MaxHeap(); @|YH|/RF  
h.init(data); YT(AUS5n  
for(int i=0;i h.remove(); BLD gt~h#  
System.arraycopy(h.queue,1,data,0,data.length); 9p(. A$  
} +TDw+  
6qnzBA7  
private static class MaxHeap{ c9h6C  
Wvf ^N(  
void init(int[] data){ oYH-wQj  
this.queue=new int[data.length+1]; cSV aI  
for(int i=0;i queue[++size]=data; DN:EB @  
fixUp(size); \ }G> 8^  
} #S"nF@   
} *gWwALGo5  
$-sHWYZ  
private int size=0; @E|}Y  
YNi.SXH  
private int[] queue; 5$C-9  
T9   
public int get() { B tcy)LRk  
return queue[1]; /IMFO:c  
} ~b8]H|<'Y  
?$4 PVI}  
public void remove() { 9djk[ttA)  
SortUtil.swap(queue,1,size--); -(H0>Ap  
fixDown(1); %1+4_g9  
} (SAs-  
file://fixdown [d ]9Oa4  
private void fixDown(int k) { 3h`f  6  
int j; $~T4hv :  
while ((j = k << 1) <= size) { <wD-qTW  
if (j < size %26amp;%26amp; queue[j] j++; [/8%3  
if (queue[k]>queue[j]) file://不用交换 nAdf=D'P  
break; $f7l34Sf3  
SortUtil.swap(queue,j,k); (n_/`dP  
k = j; 'TB2:W3  
} z~s PXGb  
} fe_5LC"  
private void fixUp(int k) { X#^[<5  
while (k > 1) { LZxNAua  
int j = k >> 1; tc_3sC7jN  
if (queue[j]>queue[k]) - 1gVeT&  
break; .(k|wX[Fu~  
SortUtil.swap(queue,j,k); %d9uTm;  
k = j; eTcd"Kd/  
} S3Jo>jXS "  
} @`9]F7h5W  
wN~_v-~*Q  
} .HABNPNg(  
:gFx{*xN/9  
} uW %#  
[ub e6  
SortUtil: KF:78C  
\:LW(&[!  
package org.rut.util.algorithm; inp7K41  
bW(0Ng  
import org.rut.util.algorithm.support.BubbleSort; 4;2uW#dG"  
import org.rut.util.algorithm.support.HeapSort; FGBbO\< /  
import org.rut.util.algorithm.support.ImprovedMergeSort; Yrq~5)%  
import org.rut.util.algorithm.support.ImprovedQuickSort; PLBr P  
import org.rut.util.algorithm.support.InsertSort;  O*P.]d  
import org.rut.util.algorithm.support.MergeSort; 5*u+q2\F  
import org.rut.util.algorithm.support.QuickSort; xr^LFn)  
import org.rut.util.algorithm.support.SelectionSort; E|shs=I  
import org.rut.util.algorithm.support.ShellSort; 8P\Zo8}v  
W ]8 QM1$  
/** j8:\%|  
* @author treeroot J\=*#*rJ1  
* @since 2006-2-2 kvu)y`  
* @version 1.0 ((%? `y  
*/ P?P#RhvA1  
public class SortUtil { )MT}+ai  
public final static int INSERT = 1; @gK?\URoT  
public final static int BUBBLE = 2; R 2vlFx/  
public final static int SELECTION = 3; -X6PRE5a2  
public final static int SHELL = 4; 5~DJWi,  
public final static int QUICK = 5; Xne1gms  
public final static int IMPROVED_QUICK = 6; dft!lBN  
public final static int MERGE = 7; BDQsP$'6QT  
public final static int IMPROVED_MERGE = 8; /Z}}(6T  
public final static int HEAP = 9; +D*Z_Yh6  
>9Vn.S  
public static void sort(int[] data) { o}p n0KO,  
sort(data, IMPROVED_QUICK); ,zY{  
} xxQ;xI0+]  
private static String[] name={ -jm Y)(\  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zX i 'kB  
}; p0eX{xm  
J C}D` h  
private static Sort[] impl=new Sort[]{ |-~Y#]  
new InsertSort(), Pr C{'XDlU  
new BubbleSort(), a(ZcmYzXU  
new SelectionSort(), {Qj~M<@3  
new ShellSort(), @oGcuE  
new QuickSort(), 0#gK6o!  
new ImprovedQuickSort(), :7;@ZEe  
new MergeSort(), H3oFORh  
new ImprovedMergeSort(), "_?nN"A7  
new HeapSort() pEz_qy[#  
}; w_VP J  
9%obq/Lb  
public static String toString(int algorithm){ ;8 lfOMf  
return name[algorithm-1]; vW@=<aS Z  
} Y8t8!{ytg  
?:9"X$XR  
public static void sort(int[] data, int algorithm) { 8zq=N#x  
impl[algorithm-1].sort(data); [{/jI\?v  
} #,'kXj  
lH~[f  
public static interface Sort { *lJxH8\  
public void sort(int[] data); J] r^W)O  
} I)HPO,7  
.*Qx\,  
public static void swap(int[] data, int i, int j) { >^{yF~(  
int temp = data; j_j]"ew)  
data = data[j]; j B{8u&kz)  
data[j] = temp; >=w)x,0yX  
} 9+!hg'9Qn  
} :[d9tm  
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