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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。 ,5x#o  
插入排序: {-lpYD^k3  
*7E#=xb  
package org.rut.util.algorithm.support; 8{i O#C  
K iEmvC  
import org.rut.util.algorithm.SortUtil; d@p#{ -  
/** ZS%W/.?  
* @author treeroot ;{aGEOP'U  
* @since 2006-2-2 `U=Jbdc l3  
* @version 1.0 $H)Q UFyC  
*/ t.dr<  
public class InsertSort implements SortUtil.Sort{ |dz"uIrT  
X 5\xq+Ih  
/* (non-Javadoc) xKl1DIN[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /z_]7]  
*/ 'zbvg0T  
public void sort(int[] data) { E#\Oe_eq~N  
int temp; sQJGwZ 7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :G6aO  
} r^a:s]  
} T-#4hY`  
} `/Rqt+C  
, /%'""`w  
} <=V{tl  
`KN>0R2k  
冒泡排序: O5aXa_A_u  
@gfW*PNjlP  
package org.rut.util.algorithm.support; lKB9n}P  
l^d'8n  
import org.rut.util.algorithm.SortUtil; i!RfUod  
lm 96:S  
/** =@0J:"c  
* @author treeroot YVwpqOE.=  
* @since 2006-2-2 Xl<iR]lda  
* @version 1.0  |iI dm  
*/ 3C<G8*4);/  
public class BubbleSort implements SortUtil.Sort{ x\U[5d   
"V(P)_  
/* (non-Javadoc) K"x_=^,Yu*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [@ev%x,  
*/ 8>t,n,k  
public void sort(int[] data) { p_g`f9q6D  
int temp; b _<n]P*)  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2QRO$NieV  
if(data[j] SortUtil.swap(data,j,j-1); 8}m J )9<7  
} p<{P#?4 g  
} tsJR:~  
} oX8EY l  
} SAdE9L =d  
^?Mp(o  
} @lF?+/=$  
t^KQ*8clG  
选择排序: Ku%tM7ad  
Ny^f'tsA  
package org.rut.util.algorithm.support; }%8ZN :  
0cE9O9kE  
import org.rut.util.algorithm.SortUtil; p<=Lh47 =  
mf3,V|>[\  
/** &hO-6(^I  
* @author treeroot ;aV3j/  
* @since 2006-2-2 L FkDb}  
* @version 1.0 5h&sdzfG  
*/ aZ4?! JW.  
public class SelectionSort implements SortUtil.Sort { kqm(D#  
O7Jux-E1C  
/* RARA_tii  
* (non-Javadoc) 50QDqC-]XS  
* ,puoq {  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (0 H=f6N  
*/ C@6:uiT$  
public void sort(int[] data) { 7H5VzV  
int temp; ewU*5|*[  
for (int i = 0; i < data.length; i++) { ?W{+[OXs  
int lowIndex = i; J?w_DQa  
for (int j = data.length - 1; j > i; j--) { XZ~kXE;B(  
if (data[j] < data[lowIndex]) { .Pponmy  
lowIndex = j; Ba@~:  
} UuWIT3W>%  
} \0x>#ygX  
SortUtil.swap(data,i,lowIndex); } Xo#/9  
} ["<Xh0_  
} {#qUZ z-  
zPa2fS8  
} LN WS  
"t&=~eOe3  
Shell排序: -0d9,,c  
eO <N/?t  
package org.rut.util.algorithm.support; S(Afo`  
W|m(Jh[w]  
import org.rut.util.algorithm.SortUtil; \Q|-Npw  
ZK8)FmT_<O  
/** B{`adq?pW  
* @author treeroot RJ'[m~yl5X  
* @since 2006-2-2 "-$}GUK?Z  
* @version 1.0 % -!%n= P  
*/ XnZ$ %?$  
public class ShellSort implements SortUtil.Sort{ x.*^dM@V  
Ks P2./N  
/* (non-Javadoc) <E4(KE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tse#{  
*/ GIM/T4!)  
public void sort(int[] data) { q$:7j5E  
for(int i=data.length/2;i>2;i/=2){ a#=d{/ ab  
for(int j=0;j insertSort(data,j,i); Y7.+ Ma#|  
} x 4+WZYv3  
} |+q_kx@?l  
insertSort(data,0,1); qU !dg  
} ^A@f{g$KB+  
%xlpOR4  
/** ] #@:VR  
* @param data %NrH\v{7Q  
* @param j ?.SGn[  
* @param i b!]O]dk#  
*/ (p[#[CI9  
private void insertSort(int[] data, int start, int inc) { ,Q-,#C"  
int temp; l&ueD& *4&  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); PaI\y! f  
} TRGpE9i  
} H54RA6$>  
} CW+kKN  
Vc(4d-d5  
} R.rc h2  
_d@YLd78P  
快速排序: ^YLC{V  
o9 9ExQ.  
package org.rut.util.algorithm.support; <{kPa_`'  
_u[tv,  
import org.rut.util.algorithm.SortUtil; 8OZj24*'DS  
<-v zS;  
/** m[}k]PB>  
* @author treeroot Ic2?1<IZA  
* @since 2006-2-2 r E+B}O  
* @version 1.0 ;qgo=  
*/ 2R&\qZ<  
public class QuickSort implements SortUtil.Sort{ &s+l/;3  
~.W]x~X$  
/* (non-Javadoc) r'OqG^6JFN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bFG~08Z ,d  
*/ XPX?+W=mv  
public void sort(int[] data) { (SyD)G\rj  
quickSort(data,0,data.length-1); W#F9Qw  
} ]%E h"   
private void quickSort(int[] data,int i,int j){ ?}KRAtJ8  
int pivotIndex=(i+j)/2; =wh[D$n$~  
file://swap e_=K0fFz  
SortUtil.swap(data,pivotIndex,j); @ wR3L:@  
*6/IO&y1a  
int k=partition(data,i-1,j,data[j]); B>fZH \Y  
SortUtil.swap(data,k,j); ]bY|>q  
if((k-i)>1) quickSort(data,i,k-1); e'K~WNT  
if((j-k)>1) quickSort(data,k+1,j); efXnF*Z  
j;3I`:  
} )q=F_:$  
/** }3{eVct#|  
* @param data m.K cTM%j  
* @param i 9r?Z'~,Za  
* @param j bTum|GWf  
* @return #dZs[R7h  
*/ 1C<cwd;9  
private int partition(int[] data, int l, int r,int pivot) { CeYhn\m5K0  
do{ 4-yK!LR  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); CVfV    
SortUtil.swap(data,l,r); x(Bt[=,K3  
} ZM.'W}J{ *  
while(l SortUtil.swap(data,l,r); Z=]SAK`  
return l; zKd@Ab  
} XDY]LAV  
U!(.i1^n  
} Hh% !4_AMw  
/pj[c;aO  
改进后的快速排序: 3YvKHn|V"  
~m6=s~Vn  
package org.rut.util.algorithm.support; gK rUv0&F  
= QBvU)Ki  
import org.rut.util.algorithm.SortUtil; !/}3/iU  
nQiZ6[L  
/** 8ZY]-%  
* @author treeroot E8!`d}\#  
* @since 2006-2-2 v)+g<!  
* @version 1.0 bXs=<`>  
*/ $%~ JG(  
public class ImprovedQuickSort implements SortUtil.Sort { no*)M7  
<F7a!$zQ  
private static int MAX_STACK_SIZE=4096; ' h7Faj  
private static int THRESHOLD=10; QF>T)1&J[7  
/* (non-Javadoc) &*v\t\]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &en. m>9,  
*/ O&l4/RtQ\)  
public void sort(int[] data) { TDH^x1P  
int[] stack=new int[MAX_STACK_SIZE]; O%EA ,5U.  
JIySe:p3  
int top=-1; ^ }7O|Y7  
int pivot; A8m06  
int pivotIndex,l,r; f!'i5I]  
fp [gKRSF  
stack[++top]=0; 4'O,xC  
stack[++top]=data.length-1; ?9~^QRLT  
?\o~P  
while(top>0){ Xq135/d  
int j=stack[top--]; cwmS4^zt8  
int i=stack[top--]; ME)Tx3d  
v #+ECx  
pivotIndex=(i+j)/2; tAv3+  
pivot=data[pivotIndex]; I\mF dE  
QC+ Z6WS;  
SortUtil.swap(data,pivotIndex,j); /JR+WmO  
5NhFjPETr  
file://partition j*.;6}\o  
l=i-1; a}UmD HS-  
r=j;  cyl%p$  
do{ ,';|CGI cP  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {+J{t\`  
SortUtil.swap(data,l,r); PJ5}c!o[  
} ZwUBeyxS=c  
while(l SortUtil.swap(data,l,r); ? "I %K%  
SortUtil.swap(data,l,j); tl 0|.Q,  
?AyxRbk  
if((l-i)>THRESHOLD){ d>p' A_  
stack[++top]=i; ` s7pM  
stack[++top]=l-1; aw*]b.f  
} DB|1Sqjsn  
if((j-l)>THRESHOLD){ ^ptybVo  
stack[++top]=l+1; JN wI{  
stack[++top]=j; kvwnqaX  
} nj s:  
dxX`\{E  
} ]h S:0QE  
file://new InsertSort().sort(data); m4/qxm"Dx:  
insertSort(data); Vm%G q  
} `Z;Z^c  
/** '[ #y|  
* @param data u9"=t  
*/ 7P<VtS  
private void insertSort(int[] data) { h&'|^;FM  
int temp; l'"nU6B&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &ksuk9M  
} D;R~!3f./b  
} /QQRy_Z1)  
} /PwiZ A3sA  
%/A>'p,~  
} 16L YVvmW  
O(-p md,  
归并排序: l e/j!  
ve d]X!  
package org.rut.util.algorithm.support; Q a (Sb  
+?*;#=q  
import org.rut.util.algorithm.SortUtil; cACIy yQ  
KL_ /f   
/** !y d B,S  
* @author treeroot d0>U-.  
* @since 2006-2-2 ce;7  
* @version 1.0 lx|Aw@C3~  
*/ R%jOgZG  
public class MergeSort implements SortUtil.Sort{ [D~]  
nCq'=L,m  
/* (non-Javadoc) 30sJ"hF9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -qP)L;n  
*/ <e UsMo<  
public void sort(int[] data) { MH.+pqIv^  
int[] temp=new int[data.length]; 6m_mma_,&  
mergeSort(data,temp,0,data.length-1); j-K[]$  
} H^-Y]{7  
:+"4_f0  
private void mergeSort(int[] data,int[] temp,int l,int r){ MqZ"Js  
int mid=(l+r)/2; e}uK"dl(  
if(l==r) return ; U6&`s%mIa  
mergeSort(data,temp,l,mid); ,iyy2  
mergeSort(data,temp,mid+1,r); !,`'VQw$  
for(int i=l;i<=r;i++){ I/(U0`%  
temp=data; :M"+  
} ({E,}x  
int i1=l; u !BU^@P  
int i2=mid+1; rCw 4a?YS  
for(int cur=l;cur<=r;cur++){ 6BV 6<PHJ  
if(i1==mid+1) @7nZjrH  
data[cur]=temp[i2++]; 6$b =Tr=0  
else if(i2>r) ;U(]#pW!t  
data[cur]=temp[i1++]; $4{sP Hi)I  
else if(temp[i1] data[cur]=temp[i1++]; m \)B=H!bz  
else MN<LZC% $  
data[cur]=temp[i2++]; eke[{%L  
} oLoc jj~T  
} @6 "MhF  
liS'  
} 8!2)=8|f  
sOLh'x f.  
改进后的归并排序: 2_w pj;E  
)Eozo4~  
package org.rut.util.algorithm.support; +Csb8  
-PPwX~;!  
import org.rut.util.algorithm.SortUtil; Z,)H f  
+v B}E  
/** 2'fd4 rE5  
* @author treeroot O!"K'Bm  
* @since 2006-2-2  :tZsSK  
* @version 1.0 dUv@u !}B  
*/ wH|%3 @eJ  
public class ImprovedMergeSort implements SortUtil.Sort { $ +WXM$N  
X;!*D  
private static final int THRESHOLD = 10; Dl/ C?Fll  
D/E5&6  
/* AOg'4  
* (non-Javadoc) &| (K#|^@  
* p6j-8ggL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;T^s&/>E  
*/ ={B C0,  
public void sort(int[] data) { i*|HN"!  
int[] temp=new int[data.length]; @|:fm() <  
mergeSort(data,temp,0,data.length-1); 8|Tqk,/pD  
} :gsRJy1  
WHC/'kvF  
private void mergeSort(int[] data, int[] temp, int l, int r) { r-T1^u  
int i, j, k; `<tRfl}qs  
int mid = (l + r) / 2; fn<dr(Dx  
if (l == r) JzEg`Sn^  
return; E{V?[HcWq  
if ((mid - l) >= THRESHOLD) :P-H8*n""  
mergeSort(data, temp, l, mid); iFUiw&  
else iM8Cw/DS  
insertSort(data, l, mid - l + 1); V=ll 9M  
if ((r - mid) > THRESHOLD) 9y7hJib  
mergeSort(data, temp, mid + 1, r); w,IJ44f ^%  
else --]blP7  
insertSort(data, mid + 1, r - mid); P.YT/  
5mAb9F8@  
for (i = l; i <= mid; i++) { +k6` tl~*  
temp = data;  C O6}D  
} 4S42h_9  
for (j = 1; j <= r - mid; j++) { $'\kK,=  
temp[r - j + 1] = data[j + mid]; 3rRIrrYO  
} m@ <,bZkl  
int a = temp[l]; uRy}HLZ"  
int b = temp[r]; Py*WHHO  
for (i = l, j = r, k = l; k <= r; k++) { ,It0brF  
if (a < b) { .M:&Aj)x16  
data[k] = temp[i++];  (7X  
a = temp; QI[WXx p  
} else { uT]$R  
data[k] = temp[j--]; c%5P|R~g]p  
b = temp[j]; f_ MK4  
} Ihf>FMl:  
} ]ttF''lH  
} vL_yM  
! #Pn_e  
/** Cj#wY  
* @param data <J d!`$  
* @param l jIaaNO)  
* @param i /cClV"S*G  
*/ T4W20dxL7  
private void insertSort(int[] data, int start, int len) { 6OE xAn8  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); CY?J$sN  
} EC\@$Fg  
} $x }R2  
} { 5r]G  
} /'8%=$2Kw  
/[ m7~B]QE  
堆排序: qD%88c)g  
n_{&dVE  
package org.rut.util.algorithm.support; uyEk1)HC  
QV."ZhL5=  
import org.rut.util.algorithm.SortUtil; KF&8l/f  
9(fh+  
/** \r aP  
* @author treeroot 8T"L'{ggWB  
* @since 2006-2-2 G>pedE\  
* @version 1.0 Vw ;iE=L  
*/ < R"Y^]P=  
public class HeapSort implements SortUtil.Sort{ PoZ$3V$(Lz  
^%*qe5J  
/* (non-Javadoc) y a$yRsd`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yPfx!9B  
*/ yuC"V'  
public void sort(int[] data) { <nJGJ5JJ  
MaxHeap h=new MaxHeap(); QH><! sa  
h.init(data); VP< zOk7  
for(int i=0;i h.remove(); 6MOwn*%5k  
System.arraycopy(h.queue,1,data,0,data.length); 2L^/\!V#  
} C2LG@iCIE  
iOm&(2/  
private static class MaxHeap{ 3T(ft^~  
!_Y%+Rkp0  
void init(int[] data){ &=t~_ Dc  
this.queue=new int[data.length+1]; MZV bOcSAd  
for(int i=0;i queue[++size]=data; bBINjs8C_  
fixUp(size); ~~Cd9Hzi  
} +Q"s!\5  
} &K!0yR  
.+2:~%v6  
private int size=0; 4grV2xtX  
3K(/=  
private int[] queue; v$`3}<3-  
[W$x5|Z}Q  
public int get() { E_& ;.hw  
return queue[1]; ?p6@uM\Q7  
} 8Ud.t =2  
3q'nO-KJ  
public void remove() { ral=`/p  
SortUtil.swap(queue,1,size--); v+E J $  
fixDown(1); -DGuaUU  
} gs}&a3d7k  
file://fixdown ?b d&Av  
private void fixDown(int k) { /slCK4vFc  
int j; H^*[TX=#[  
while ((j = k << 1) <= size) { CWZv/>,%  
if (j < size %26amp;%26amp; queue[j] j++; Z3zD4-p$_  
if (queue[k]>queue[j]) file://不用交换 !]"M]tyv\  
break; ZLaht(`+  
SortUtil.swap(queue,j,k); `?&C5*P  
k = j; hJFxT8B/  
} "pX|?ap  
} Lniz>gSc  
private void fixUp(int k) { W;Dik%^tg  
while (k > 1) { 0XE6H w  
int j = k >> 1; JWu0VLo  
if (queue[j]>queue[k]) 0(5qVJ12  
break; 3#fg 2  
SortUtil.swap(queue,j,k); b7'A5]X  
k = j; cooicKS7  
} *W=1yPP  
} Qt"jU+Zoy  
\Ogs]4   
} E08!a  
r 'ioH"=  
} 1=_?Wg:   
4 J9Y  
SortUtil: >]Mhkf/=)  
Ye^#]%m  
package org.rut.util.algorithm; Yh,,(V6  
aEUEy:.  
import org.rut.util.algorithm.support.BubbleSort; heES [  
import org.rut.util.algorithm.support.HeapSort; =J-&usX  
import org.rut.util.algorithm.support.ImprovedMergeSort; % T$!I(L&  
import org.rut.util.algorithm.support.ImprovedQuickSort; *ax&}AHK[/  
import org.rut.util.algorithm.support.InsertSort; }uD*\.  
import org.rut.util.algorithm.support.MergeSort; ZDK+>^A)  
import org.rut.util.algorithm.support.QuickSort; +IGSOWL  
import org.rut.util.algorithm.support.SelectionSort; &mJm'Ks  
import org.rut.util.algorithm.support.ShellSort;  1A]   
c[6<UkH7  
/** z/o&r`no  
* @author treeroot 22d>\u+c  
* @since 2006-2-2 Yg!fEopLb  
* @version 1.0 GOCe&?  
*/ k:U%#rb;  
public class SortUtil { J"eE9FLM  
public final static int INSERT = 1; RXO}mu]Iu  
public final static int BUBBLE = 2; M&(0n?R"R  
public final static int SELECTION = 3; 7 A{R0@  
public final static int SHELL = 4; P`CQ)o  
public final static int QUICK = 5; ]<iD'=a  
public final static int IMPROVED_QUICK = 6; wVv@   
public final static int MERGE = 7; R-Tf9?)  
public final static int IMPROVED_MERGE = 8; 93)1  
public final static int HEAP = 9; ~!fOl)F  
skLr6Cs|  
public static void sort(int[] data) { WD8F]+2O\  
sort(data, IMPROVED_QUICK); jTsQsHq   
} Urm(A9|N  
private static String[] name={ RLVz"=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" hs)_h^P   
}; d ~CZ9h  
:Mu]* N  
private static Sort[] impl=new Sort[]{ p?s[I)e  
new InsertSort(), 7?Twhs.O  
new BubbleSort(), GKXd"8z]  
new SelectionSort(), wx/*un%2  
new ShellSort(), aH$DEs  
new QuickSort(), *]S&V'Di  
new ImprovedQuickSort(), HvG~bZN  
new MergeSort(), ,7Q b24A  
new ImprovedMergeSort(), {tXyz[;i1}  
new HeapSort() Wh?3vZ^  
}; k _Bz@^J  
2reQd47  
public static String toString(int algorithm){ F^DDN7AKH  
return name[algorithm-1]; k+u L^teyS  
} (ap,3$ hS  
;:~-=\  
public static void sort(int[] data, int algorithm) { l\bgp3.+  
impl[algorithm-1].sort(data); CDFX>>N  
} ;3O=lo:$~  
^hwTnW9Z1:  
public static interface Sort { ;`Wh^Qgi  
public void sort(int[] data); %\ !3tN  
} 4:s!mHcz  
.Nd_p{   
public static void swap(int[] data, int i, int j) { $0 ~_)$i :  
int temp = data; ^,fMs:  
data = data[j]; u3vw[k  
data[j] = temp; mm`yu$9gbP  
} ESY\!X:|  
} U'xmn$ O  
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