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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。 Ij4oH  
插入排序: r 5:DIA!  
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package org.rut.util.algorithm.support; =M>pL+#  
>DPC}@Wl  
import org.rut.util.algorithm.SortUtil; {}~7Gi!  
/** {QI"WFdGx  
* @author treeroot K&\xbT  
* @since 2006-2-2 +Y6=;*j$  
* @version 1.0 E]i3E[T  
*/ `!  
public class InsertSort implements SortUtil.Sort{ AYfW}V"  
' 4ftclzL  
/* (non-Javadoc) j$,:cN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qv|A^%Ub!  
*/ 3D(/k%;)  
public void sort(int[] data) { R8sj>.I9j  
int temp; KHI-m9(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4uwI=UUB  
} VPet1hAy  
} bU7n1pzW,o  
} ol [   
!T!U@e=u  
} xhWWl(r`5  
;3'ta!.c  
冒泡排序: 2h%/exeS;  
%`?IY<  
package org.rut.util.algorithm.support; Et}S*!IS  
Se{}OG)  
import org.rut.util.algorithm.SortUtil; /0A9d-Qd<  
]MKW5Kq  
/** XShi[7  
* @author treeroot -c{O!z6sX  
* @since 2006-2-2 fp^{612O?  
* @version 1.0 &gR)Y3  
*/ eVGO6 2|!  
public class BubbleSort implements SortUtil.Sort{ B<%cqz@  
0Q`Dp;a5&  
/* (non-Javadoc) UP'~D]J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .nl!KzO6g  
*/ [3"k :  
public void sort(int[] data) {  ltK\ )L  
int temp; >k }ea5+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ B<zoa=  
if(data[j] SortUtil.swap(data,j,j-1); >g+yw1nC  
} ~4fUaMT  
} ;SnpD)x@)  
} 4YX/=  
} /H3z~PBa  
U[,."w]T  
} 6V-u<FJ  
*t=8^q(K[  
选择排序: mE\sD<b  
D<U^FT  
package org.rut.util.algorithm.support; )31{.c/  
/N'0@ q  
import org.rut.util.algorithm.SortUtil; iI.pxo s  
|Tv}leJF  
/** Xt} 4B#  
* @author treeroot H{hd1  
* @since 2006-2-2 $lVR6|n  
* @version 1.0 t/%{R.1MN  
*/ ,a 2(h  
public class SelectionSort implements SortUtil.Sort { <;kcy :s  
Sqn|  
/* /<C}v~r  
* (non-Javadoc) oN({X/P2j  
* sE:~+C6o:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QP>tu1B|  
*/ *hWpJEV  
public void sort(int[] data) { \no6]xN;  
int temp; 0gTv:1F /  
for (int i = 0; i < data.length; i++) { Rxb?SBa  
int lowIndex = i; [`J91=  
for (int j = data.length - 1; j > i; j--) { lDsT?yHS`Z  
if (data[j] < data[lowIndex]) { X(_xOU)V  
lowIndex = j; O2{~Q{p  
}  ddK\q!0  
} v'RpsCov  
SortUtil.swap(data,i,lowIndex); w2X0.2)P2  
} /{Mo'.=Z  
} f.)z_RyGd  
Jt ++3]  
} -d>2&)5  
yxk:5L \A  
Shell排序: %B}<5iO  
>^:*x_a9  
package org.rut.util.algorithm.support; G.")Bg  
|#(KP  
import org.rut.util.algorithm.SortUtil; *Ri\7CqU"6  
1aAY7Dm_&  
/** I%(YR"  
* @author treeroot NTWy1  
* @since 2006-2-2 aC90IJ8^  
* @version 1.0 P K+rr.k]  
*/ 0Wkk$0h9  
public class ShellSort implements SortUtil.Sort{ (1IYOlG4  
A>\5fO  
/* (non-Javadoc) 4t 5i9+h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |VX )S!  
*/ u*}ltR~/  
public void sort(int[] data) { YuXCRw9p;  
for(int i=data.length/2;i>2;i/=2){ h*>%ou   
for(int j=0;j insertSort(data,j,i); /O[<"Wcz  
} \+M6R<Qw  
} ~7=eHU.@  
insertSort(data,0,1); yE&WGpT  
} -.@dA'j[  
B%7Az!GX  
/** / f5q9sp8  
* @param data Iip%er%b  
* @param j |l CS^bA3  
* @param i 5bB\i79$  
*/ &x9>8~   
private void insertSort(int[] data, int start, int inc) { &2,3R}B/  
int temp; .}9Lj  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \E(^<Af  
} _jb' HP  
} J5TT+FQ  
} TTa$wiW7'  
HKL/ D  
} efr9  
vX@T Zet0  
快速排序: /S{U|GBB%r  
6& (bL<8b  
package org.rut.util.algorithm.support; dAWB.#  
l|81_BC"  
import org.rut.util.algorithm.SortUtil; T095]*Hm  
m#Ydq(0+  
/** @cr/&  
* @author treeroot O llS  
* @since 2006-2-2 S,Z~-j  
* @version 1.0 |*/-~5"  
*/ ?6W v["%  
public class QuickSort implements SortUtil.Sort{ q4ttmL8  
R-Ys<;  
/* (non-Javadoc) )IVk4|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %9 3R/bx  
*/ ^Gi7th,  
public void sort(int[] data) { b>-h4{B[  
quickSort(data,0,data.length-1); iE EP~  
} t`1M}}.  
private void quickSort(int[] data,int i,int j){ 0QP=$X  
int pivotIndex=(i+j)/2; BOOb{kcg  
file://swap ?edf$-"z/  
SortUtil.swap(data,pivotIndex,j); p*j>s \  
0q4P hxR`e  
int k=partition(data,i-1,j,data[j]); [uwn\-  
SortUtil.swap(data,k,j); ?y-@c]  
if((k-i)>1) quickSort(data,i,k-1); &MZ{B/;;H  
if((j-k)>1) quickSort(data,k+1,j); =8v NOvA  
KE.O>M ,I.  
} ;hPVe _/  
/** %iB,hGatE  
* @param data NCdDG  
* @param i GorEHlvVh  
* @param j v#lrF\G5  
* @return L +mE&  
*/ 6FYL},.R  
private int partition(int[] data, int l, int r,int pivot) { &OlX CxH  
do{ We++DWp  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1N_T/I8_F  
SortUtil.swap(data,l,r); O{7rIy  
} H&8~"h6n  
while(l SortUtil.swap(data,l,r); s#'Vasu  
return l; 8BrC@L2E0  
} Egz6rRCvg  
1Ys)b[:  
} \QQWhwE  
?S;z!) H)P  
改进后的快速排序: <:!E'WT#f  
7'OR ;b$  
package org.rut.util.algorithm.support; g:O/~L0Xb  
r$v \\^?2  
import org.rut.util.algorithm.SortUtil; `YUeVz>q?  
*8Su:=*b  
/** w/ ^_w5  
* @author treeroot b*W,8HF4,  
* @since 2006-2-2 7;c^*"Ud  
* @version 1.0 nuDu  
*/ <ne?;P1L  
public class ImprovedQuickSort implements SortUtil.Sort { |"PS e~ u  
GSs?!BIC  
private static int MAX_STACK_SIZE=4096; V?Q45t Ae  
private static int THRESHOLD=10; 3ZC@q #R A  
/* (non-Javadoc) ,Ne9x\F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ALn_ifNh  
*/ !rs }83w!  
public void sort(int[] data) { ]cv/dY#  
int[] stack=new int[MAX_STACK_SIZE]; {Q[ G/=mx  
:f:&B8  
int top=-1; ZeY|JH1  
int pivot; M3elog:M  
int pivotIndex,l,r; Ml9m#c  
kL8 E#  
stack[++top]=0; q{Gh5zg5O  
stack[++top]=data.length-1; '%ByFZ zi  
+1I 7K|M  
while(top>0){ "Bv V89  
int j=stack[top--]; p Hx$  
int i=stack[top--]; 3-E-\5I  
Ie K+  
pivotIndex=(i+j)/2; @{U UB=}9  
pivot=data[pivotIndex]; DE7y\oO]  
AOkG.u-k  
SortUtil.swap(data,pivotIndex,j); TV0sxod6  
HY eCq9S  
file://partition *|j4>W\J  
l=i-1; w#hg_RK(Jr  
r=j; k]C k%[d  
do{ KgbBa2@ +  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); RT3(utwO  
SortUtil.swap(data,l,r); R:(i}g<3  
} .N>*+U>>P  
while(l SortUtil.swap(data,l,r); P3YM4&6XA  
SortUtil.swap(data,l,j); S>b 3_D  
Pwj|]0Y@  
if((l-i)>THRESHOLD){ S(U9Dlyarg  
stack[++top]=i; 3.Yg3&"Z  
stack[++top]=l-1; d2NFdBoI  
} j/Y]3RSMp  
if((j-l)>THRESHOLD){ `mW~{)x  
stack[++top]=l+1; @U3z@v]s(h  
stack[++top]=j; AbhR*  
} E24SD'|)  
IA&V?{OE@I  
} q.<)0nk  
file://new InsertSort().sort(data); /P-#y@I  
insertSort(data); 9D &vxKE  
} T{^P  
/**  r73W. &  
* @param data l*]hUPJ  
*/ 5!S#}=f=  
private void insertSort(int[] data) { gvc/Z <Y  
int temp; +}1zw<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Cg?Mk6i  
} M%la@2SK=  
} l53Q"ajG  
} -9 .lFuI  
$j(d`@.DN~  
} hr&&b3W3p  
 DAiS|x  
归并排序: <,0/BMz  
jjQDw=6  
package org.rut.util.algorithm.support; q9p31b3  
TBrw ir  
import org.rut.util.algorithm.SortUtil; oK-d58 sM  
u{va2n/  
/** bM5V=b_H  
* @author treeroot k0N>J8y  
* @since 2006-2-2 po'b((q  
* @version 1.0 CshME\/  
*/ 16]Ay&Kn!  
public class MergeSort implements SortUtil.Sort{ ra6\+M~}e  
~OsLbz:  
/* (non-Javadoc) N$ #~&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PYWFz   
*/ &]LpGl  
public void sort(int[] data) { Hc@_@G  
int[] temp=new int[data.length]; 3uxf n=E  
mergeSort(data,temp,0,data.length-1); %.u*nM7sos  
} h~]e~u V  
-BI!ZsC'  
private void mergeSort(int[] data,int[] temp,int l,int r){ $Zo|t a^  
int mid=(l+r)/2; ;]0d{  
if(l==r) return ; Fbu4GRgJ3  
mergeSort(data,temp,l,mid); Mh2b!B  
mergeSort(data,temp,mid+1,r); )eT>[['fm  
for(int i=l;i<=r;i++){ hu} vYA7ZH  
temp=data; :j .:t  
} 1$.svR  
int i1=l; ;+(_stxqV9  
int i2=mid+1; /n(0w`   
for(int cur=l;cur<=r;cur++){ 64#Ri!RR}  
if(i1==mid+1) #:N#i  
data[cur]=temp[i2++]; [;7zg@Sa  
else if(i2>r) C|Y[T{g?t  
data[cur]=temp[i1++]; nA_'j l  
else if(temp[i1] data[cur]=temp[i1++]; ZklpnL*!  
else ^'`(E_2u  
data[cur]=temp[i2++]; i!8"T#  
} kvbW^pl  
} T [xIn+w  
@VW1^{.do^  
} 52j3[in  
OI6Mx$  
改进后的归并排序: LQr!0p.i"  
RCYv2=m>Q  
package org.rut.util.algorithm.support; jSHFY]2  
6;:D!},'c  
import org.rut.util.algorithm.SortUtil; .%7Le|Fb"  
Zzg zeT+bv  
/** {DKZ ~  
* @author treeroot )-1e} VF(U  
* @since 2006-2-2 \-]tvgA~&  
* @version 1.0 n.a2%,|v  
*/ H"^9g3 U  
public class ImprovedMergeSort implements SortUtil.Sort { 6,jCO@!   
(B$>o.(JA  
private static final int THRESHOLD = 10; $z*"@  
axt;}8  
/* ]S]W|m7=.Z  
* (non-Javadoc) 8rS;}Bt  
* e(a,nZF.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hKN ;tq,  
*/ C P&u  
public void sort(int[] data) { lEwQj[ k  
int[] temp=new int[data.length]; _V1:'T8  
mergeSort(data,temp,0,data.length-1); GRYw_}Aa  
} w{dRf!b69  
=^rp= Az  
private void mergeSort(int[] data, int[] temp, int l, int r) { cf$ hIB)Oi  
int i, j, k; /3rNX}tOMH  
int mid = (l + r) / 2; 2jC:uk  
if (l == r) ogQfzk  
return; Z}0xK6  
if ((mid - l) >= THRESHOLD) gsEcvkj*  
mergeSort(data, temp, l, mid); &dWGa+e  
else @$^4Av-  
insertSort(data, l, mid - l + 1); $.$nv~f  
if ((r - mid) > THRESHOLD) 5EVypw?]x  
mergeSort(data, temp, mid + 1, r); :Ch XzZ  
else `Rfe*oAf  
insertSort(data, mid + 1, r - mid); 5NN;Fw+  
(!5Pl`:j"  
for (i = l; i <= mid; i++) { 1;c>#20  
temp = data; C{^I}p  
} R!"|~OO  
for (j = 1; j <= r - mid; j++) { ,9jk<)m]L  
temp[r - j + 1] = data[j + mid]; "u4x#7n|  
} QgYt(/S  
int a = temp[l]; hGrX,.zj  
int b = temp[r]; WxO+cB+?  
for (i = l, j = r, k = l; k <= r; k++) { X>uLGr>  
if (a < b) { |O>e=HC#q8  
data[k] = temp[i++]; d7r!<u&/  
a = temp; +FadOx7X$  
} else { yv]|Ce@8A  
data[k] = temp[j--]; )h 6w@TF  
b = temp[j]; ?.F^Oi6 u  
} uQn1kI[y  
} DjN1EP\Xx  
} M\k[?i  
u&S0  
/** G;vj3#u?  
* @param data |4pl}:g/Z  
* @param l ?qSwV.l]d  
* @param i tCO?<QBE  
*/ 1Dhe! n#  
private void insertSort(int[] data, int start, int len) { r0[<[jEh  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); c;"e&tW  
} KFO K%vbM  
} <Fx%P:d  
} $MQ<QP  
} /{[<J<(8  
{.e+?V2>_  
堆排序: '/ \*l<  
'&,p>aM  
package org.rut.util.algorithm.support; 2 yANf  
:/5G Hfyj  
import org.rut.util.algorithm.SortUtil; 3V^5 4_  
/({oN1X>i  
/** @XtrC|dkkE  
* @author treeroot _ {#K  
* @since 2006-2-2 M6Xzyt|  
* @version 1.0 6QT&{|q=  
*/ }ff^^7_  
public class HeapSort implements SortUtil.Sort{ H{N},B  
cH5  
/* (non-Javadoc) sm{0o$\Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A_E2v{*n  
*/ t}Td$K7  
public void sort(int[] data) { z?Z"*z  
MaxHeap h=new MaxHeap(); d(^HO~p  
h.init(data); 6A.%)whI;  
for(int i=0;i h.remove(); %vZHHBylu  
System.arraycopy(h.queue,1,data,0,data.length); -?1R l:rM  
} Bnk<e  
S!$S'{f<  
private static class MaxHeap{ y5aPs z  
pT~3< ,  
void init(int[] data){ H}G 9gi  
this.queue=new int[data.length+1]; "HqmS  
for(int i=0;i queue[++size]=data; Q=DMfJ"  
fixUp(size); Vi^vG`L9  
} -u"|{5? '  
} w{L9-o3A  
 03zt^<  
private int size=0; D~i5E9s5  
!Z\Gv1  
private int[] queue; 3`{ vx  
rloxM~7!,)  
public int get() { }s'=w]m  
return queue[1]; jz=V*p}6  
} y*sVimx  
pnp8`\cIH  
public void remove() { p&<n_b  
SortUtil.swap(queue,1,size--); CC3 i@  
fixDown(1); WW6-oQs_#*  
} q&9]4j  
file://fixdown k%Tp9x$  
private void fixDown(int k) { 2TB'HNTFx  
int j; |"%OI~^%  
while ((j = k << 1) <= size) { >iK LC  
if (j < size %26amp;%26amp; queue[j] j++; 7_jt =sr  
if (queue[k]>queue[j]) file://不用交换 mM?,e7Xhs  
break; 3 i>NKS  
SortUtil.swap(queue,j,k); eE .wnn  
k = j; <=6F=u3PtU  
} 1oiSmW\  
} M,ybj5:6  
private void fixUp(int k) { hPG@iX|V  
while (k > 1) { )l m7ly8a|  
int j = k >> 1; L ..  
if (queue[j]>queue[k]) ~J~R.r/  
break; ?F$#t6Q  
SortUtil.swap(queue,j,k); G;wh).jG5  
k = j; N Czabl  
} @@\px66  
}  HRbv%  
<<gW`KF   
} [hot,\+f  
<wFmfrx+v  
} OIw[sum2  
bw/mF5AsW  
SortUtil: qHyOaK Md  
Z{l`X#':  
package org.rut.util.algorithm; `# !>}/m  
4:O.x#p  
import org.rut.util.algorithm.support.BubbleSort; 1GkoE  
import org.rut.util.algorithm.support.HeapSort; ft@#[Bkx  
import org.rut.util.algorithm.support.ImprovedMergeSort; Y?K?*`Pkc1  
import org.rut.util.algorithm.support.ImprovedQuickSort; .+?]"1>]  
import org.rut.util.algorithm.support.InsertSort; m*iSW]&  
import org.rut.util.algorithm.support.MergeSort; q^^R|X1  
import org.rut.util.algorithm.support.QuickSort; m;xa}b{(i  
import org.rut.util.algorithm.support.SelectionSort; v)|a}5={  
import org.rut.util.algorithm.support.ShellSort; h\Y~sm?!`  
]lyQ*gM  
/** ) d'H&c3  
* @author treeroot daSx^/$R  
* @since 2006-2-2 u^]Gc p  
* @version 1.0 W]bytsl  
*/ B+R|fQ  
public class SortUtil { Z]2z*XD  
public final static int INSERT = 1; nB :iG  
public final static int BUBBLE = 2; {hf_Xro&  
public final static int SELECTION = 3; m*)jnd XY  
public final static int SHELL = 4; JS\]|~Gd  
public final static int QUICK = 5; ,+OVRc  
public final static int IMPROVED_QUICK = 6; z.)*/HGJm  
public final static int MERGE = 7; @Q nKaZ8jW  
public final static int IMPROVED_MERGE = 8; }LX!dDuwA  
public final static int HEAP = 9; 99'c\[fd'  
[K4 k7$  
public static void sort(int[] data) { IS[q'Cv*  
sort(data, IMPROVED_QUICK); "B"ql-K  
} g%^/^<ei  
private static String[] name={ NgsEEPu?  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,SdxIhL  
}; [GK## z'5  
,d.5K*?aI  
private static Sort[] impl=new Sort[]{ `{yI| Wf  
new InsertSort(), {`)o xzR  
new BubbleSort(), L:@COy  
new SelectionSort(), Wq1OYZ,  
new ShellSort(), ~@<o-|#  
new QuickSort(), wpQp1){%Q  
new ImprovedQuickSort(), ?=_w5D.3J  
new MergeSort(), kDRxu!/  
new ImprovedMergeSort(), @_c&lToj_  
new HeapSort() g.;2N9  
}; &F[N$6:v  
?/,V{!UTtq  
public static String toString(int algorithm){ ~K|ha26W  
return name[algorithm-1]; bYhG`1,$-a  
} Y![ i=/  
N 5{w  
public static void sort(int[] data, int algorithm) { 4wEkxCWp/  
impl[algorithm-1].sort(data); )`W|J%w+  
} vGJw/ij'X  
+Qzl-eN/+  
public static interface Sort { } 21!b :a  
public void sort(int[] data); B 'd@ms  
} bng/v  
/=#~8  
public static void swap(int[] data, int i, int j) { &FZ~n?;hQ  
int temp = data; ) R5[a O  
data = data[j]; &K=) YpT  
data[j] = temp; ,PKUgL}w  
} B'vIL'  
} 1Zo3K<*J  
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