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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。 $E >)  
插入排序: =cP7"\  
BH;7CK=7R  
package org.rut.util.algorithm.support; ~ZxFL$<'3  
Y-ZTv(<  
import org.rut.util.algorithm.SortUtil; Bu{1^g:  
/** X:/Y^Xu  
* @author treeroot 6he (v  
* @since 2006-2-2 G+k~k/D6  
* @version 1.0 fR^aFT  
*/ :nLhg$wMs  
public class InsertSort implements SortUtil.Sort{ Yw!(]8PYdU  
>}I BPC  
/* (non-Javadoc) Ho^rYz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^q@6((O  
*/ n[f<]4<  
public void sort(int[] data) { 12olVTuw  
int temp; kv8 /UW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Nn:>c<[  
} 2 D vKW%;  
} |to|kU  
} )=9EShz!  
\v,m r|  
} +\D?H.P  
WU:r:m+ >  
冒泡排序: cs\/6gSCo  
p$+.]  
package org.rut.util.algorithm.support; wJ}9(>id*  
q\I2lZ  
import org.rut.util.algorithm.SortUtil; B098/`r  
%=G*{mK  
/** }b$W+/M\  
* @author treeroot U%qE=u-  
* @since 2006-2-2 =)O%5<Lwx  
* @version 1.0 Jmcf9g  
*/ ^ALR.N+<  
public class BubbleSort implements SortUtil.Sort{ 9~lC/I')t  
x[m&ILr  
/* (non-Javadoc) &X%vp?p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E4;@P']`  
*/ :,~]R,tJQ  
public void sort(int[] data) { 7wA.:$  
int temp; 5;4bZ3e,0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (imaL,M-D  
if(data[j] SortUtil.swap(data,j,j-1); R{0nk   
} 4],*y`& g  
} 6$*\%  
} = VFPZ  
} O&vE 5%x  
gd=gc<zYP  
} a}#8n^2  
D>>?8a  
选择排序: rd\:.  
iQ7S*s+l5O  
package org.rut.util.algorithm.support; 56JvF*hP  
G Ch]5\  
import org.rut.util.algorithm.SortUtil; -&UP[Mq  
[]#>r k~  
/** =TcT`](o  
* @author treeroot m R|;}u;d  
* @since 2006-2-2 +/|;<K5_LI  
* @version 1.0 %fH&UFby  
*/ BK/~2u  
public class SelectionSort implements SortUtil.Sort { f?[0I\V[$  
J6s@}@R1  
/* fZ7Ap3dmP  
* (non-Javadoc) #UYrSM@u  
* i7#PYt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q}qw` L1  
*/ 9=FqI50{  
public void sort(int[] data) { K|Kc.   
int temp; M0$wTmXM  
for (int i = 0; i < data.length; i++) { "IE*MmsEz  
int lowIndex = i; MjrI0@R  
for (int j = data.length - 1; j > i; j--) { Pr_$%x9D  
if (data[j] < data[lowIndex]) { a|u&N:v7B  
lowIndex = j; -rXo}I,VI  
} A6faRi703  
} :rcohzfa  
SortUtil.swap(data,i,lowIndex); <Z:Fnp  
} )u67=0s2i+  
}  =o? Q0  
mQiVTIP3[O  
} ]?"1FSu-8r  
+.Cx.Nf(  
Shell排序: >v9@p7Dn  
%'`L+y  
package org.rut.util.algorithm.support; Xpp%j  
Mb +  
import org.rut.util.algorithm.SortUtil; q8-*3K  
//O9}-  
/** o / i W%  
* @author treeroot VQe@H8>3  
* @since 2006-2-2 nbf w7u  
* @version 1.0 1:Dm, d;  
*/ ~V`F5B  
public class ShellSort implements SortUtil.Sort{ %'vLkjI.  
27CVAX ghV  
/* (non-Javadoc) 898=9`7e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ W +  
*/ 5<=ktA48[  
public void sort(int[] data) { W%,h{  
for(int i=data.length/2;i>2;i/=2){ FsTl@zN  
for(int j=0;j insertSort(data,j,i); 1nAAs;`'  
} 23_\UTM}1  
} miv)R  
insertSort(data,0,1);  FKpyD  
} vOnhJN  
*v6 j7<H  
/** r@v_hc  
* @param data ?$Tp|<tx#  
* @param j 0n('F  
* @param i _4lhwKYU  
*/ {DVu* %|  
private void insertSort(int[] data, int start, int inc) { H7&bUt/  
int temp; '3'*VcL(  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _1EWmHZ?  
} ! {c"C  
} ,lUr[xzV  
} Z?AX  
hOH DXc"  
} v[t *CpGd  
Q/u1$&1  
快速排序: $1< ~J  
8*\PWl  
package org.rut.util.algorithm.support; E6njm du  
%*Aq%,.={  
import org.rut.util.algorithm.SortUtil; +GDT@,/  
l2 [{T^  
/** (Ymj  
* @author treeroot GL- r;  
* @since 2006-2-2 aNxq_pRb  
* @version 1.0 5uxB)Dx)  
*/ ^+b ??K  
public class QuickSort implements SortUtil.Sort{ ,'>,N/JA  
WiBO8N,%`  
/* (non-Javadoc) pjaDtNb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )cUFb:D*"  
*/ >ngP\&\  
public void sort(int[] data) { 8<X,6  
quickSort(data,0,data.length-1); !hS~\+E  
} 5L%\rH&N  
private void quickSort(int[] data,int i,int j){ s J~WzQ  
int pivotIndex=(i+j)/2; JS{trqc1d  
file://swap kntM  
SortUtil.swap(data,pivotIndex,j); ~4{|  
8&2W^f5  
int k=partition(data,i-1,j,data[j]); EKTn$k=  
SortUtil.swap(data,k,j); z:a%kZQ!0  
if((k-i)>1) quickSort(data,i,k-1); gI5"\"T{  
if((j-k)>1) quickSort(data,k+1,j); IP3%'2}-  
B+Ox#[<75  
} C_q@ixF{  
/** B4d\4S_r%  
* @param data `:y {  
* @param i DuV@^qSbG.  
* @param j p#DJow  
* @return ,4`=gKn  
*/ oBqWIXM  
private int partition(int[] data, int l, int r,int pivot) { 6OOdVS3\J  
do{ XA4miQn&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y?4%eD  
SortUtil.swap(data,l,r); 0g&#hW};[6  
} $Lx2!Zy  
while(l SortUtil.swap(data,l,r); cQOc^W  
return l; {iRXK   
} ehe;<A  
Q q7+_,w  
} y^xEZD1X6-  
Okt0b|=`1*  
改进后的快速排序: }_vUsjK  
C!%\cy%Xj  
package org.rut.util.algorithm.support; 20Rj Rd  
r'5~4'o$  
import org.rut.util.algorithm.SortUtil; Jg:%|g  
\n}@}E L  
/** hCvK2Xu   
* @author treeroot R3,O;9i  
* @since 2006-2-2 5:W 5@e{  
* @version 1.0 `N.^+Mvx-  
*/ ay-M.J  
public class ImprovedQuickSort implements SortUtil.Sort { 8a}et8df:  
xLp<G(;  
private static int MAX_STACK_SIZE=4096; G+dQ" cI9  
private static int THRESHOLD=10; |MEu"pY)  
/* (non-Javadoc) g E#4 3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xe:gH.}  
*/ n +R3  
public void sort(int[] data) { M}c gVMW  
int[] stack=new int[MAX_STACK_SIZE]; 5:r*em  
"jFRGgd79  
int top=-1; g$P<`.  
int pivot; <!m'xOD  
int pivotIndex,l,r; %40uw3  
BZr$x8%ki  
stack[++top]=0; ecg>_%.>  
stack[++top]=data.length-1; k.MAX8  
MfJ8+3@K  
while(top>0){ ,KO_h{mI<  
int j=stack[top--]; +&j&es  
int i=stack[top--]; [h;&r"1  
_5%NG 3c  
pivotIndex=(i+j)/2; F4T}HY>nZ  
pivot=data[pivotIndex]; w4UaWT1J  
U|2*.''+Q  
SortUtil.swap(data,pivotIndex,j); %; 0l1X  
U.mVz,k3  
file://partition Za4X ;  
l=i-1; w!8xZu  
r=j; FK~FC:K  
do{ S="teH[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Vy6A]U\%  
SortUtil.swap(data,l,r); <.6bni )  
} /xseI)y.B  
while(l SortUtil.swap(data,l,r); wAn}ic".b  
SortUtil.swap(data,l,j); ^qgOgu  
p(J,fus  
if((l-i)>THRESHOLD){ vsDR@Y}k  
stack[++top]=i; pD )$O}  
stack[++top]=l-1; ESQgN+llj  
} ]z{f)`;I  
if((j-l)>THRESHOLD){ AR}q<k6E  
stack[++top]=l+1; /-_<RQ  
stack[++top]=j; f:)%+)U<Xm  
} h9J%NH  
_Vj uQ  
} Ait3KIJ9  
file://new InsertSort().sort(data); k 6)ThIG  
insertSort(data); O,>`#?  
} 6L\?+=X  
/** /ZcqKC  
* @param data :% o32  
*/ `_*NFv1_  
private void insertSort(int[] data) { 6gSo>F4=  
int temp; gr%!<2w  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0 jszZ_  
} \KpSYX1  
} Vu u2SS  
}  | D?lF  
a`:ag~op@&  
} ;K+'J0  
a*fUMhIi  
归并排序: vxmz3ht,Q  
OB&lq.r  
package org.rut.util.algorithm.support; Cc7YjsRW  
JC[G5$E  
import org.rut.util.algorithm.SortUtil; sp VE'"^  
fQtV-\Bc  
/** -55Pvg0ND  
* @author treeroot 8&0+Az"{O  
* @since 2006-2-2 >gqd y*Bg  
* @version 1.0 %%=PpKYtSD  
*/ l_`DQ8L`  
public class MergeSort implements SortUtil.Sort{ >#j f Z5t  
ZV?~~_ 9  
/* (non-Javadoc) ==i:*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .S{Q }S  
*/ V6.w=6:`X  
public void sort(int[] data) { Mr8r(LGY  
int[] temp=new int[data.length]; G{8>  
mergeSort(data,temp,0,data.length-1); 'aFjyY?%  
} j![;;  
4kZ9]5#.  
private void mergeSort(int[] data,int[] temp,int l,int r){ P%-@AmO^_  
int mid=(l+r)/2; )w.\xA~|  
if(l==r) return ; ND3(oes+;K  
mergeSort(data,temp,l,mid); q!5 *) nw"  
mergeSort(data,temp,mid+1,r); f Cq  
for(int i=l;i<=r;i++){ D02_ Jrg  
temp=data; ee9nfvG-  
} @H?_x/qBT  
int i1=l; 6tKm'`^z4  
int i2=mid+1; ~jqG  
for(int cur=l;cur<=r;cur++){ 0A7 qO1%xw  
if(i1==mid+1) I`O)I&KH  
data[cur]=temp[i2++]; ~MOab e  
else if(i2>r) 4IW7^Pq`P  
data[cur]=temp[i1++]; }E}b/ulg1  
else if(temp[i1] data[cur]=temp[i1++]; -X)KY_Xn@/  
else ~PoBvHi  
data[cur]=temp[i2++]; [J6*Q9B<V&  
} o,#[Se*n  
} D m|_;iO,  
%S2^i3  
} -@wnQ?  
5tIM@,.I/  
改进后的归并排序: c|s*(WljY  
?4]#gC ks  
package org.rut.util.algorithm.support; ~;pv &s5}  
UX9r_U5)  
import org.rut.util.algorithm.SortUtil; $h({x~Oj9  
JpFfO<uO  
/** :-I~-Yj  
* @author treeroot  3e<FlH{  
* @since 2006-2-2 |#r [{2sS  
* @version 1.0 8, >YB+Hb  
*/ z&"-%l.b@}  
public class ImprovedMergeSort implements SortUtil.Sort { u)DhkF|  
#\Q{?F!4  
private static final int THRESHOLD = 10; XuQ7nlbnq  
KvFGwq"X  
/* 7,\Uk|  
* (non-Javadoc) m}x&]">9  
* :[#~,TW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }P5zf$  
*/ _>G=v!  
public void sort(int[] data) { 4|&7j7<u  
int[] temp=new int[data.length]; Bhy:" r%#  
mergeSort(data,temp,0,data.length-1); ON(H7  
} GYx_9"J\5  
ed,w-;(n~  
private void mergeSort(int[] data, int[] temp, int l, int r) { >@2l/x8;  
int i, j, k; Dn 6k,nVh  
int mid = (l + r) / 2; `o9vE0^T<  
if (l == r) <By6%<JTn  
return; F^ m`j6  
if ((mid - l) >= THRESHOLD) V7zF5=w  
mergeSort(data, temp, l, mid); Pgy&/-u  
else +&W%]KEh  
insertSort(data, l, mid - l + 1); m"2KAq61  
if ((r - mid) > THRESHOLD) FyZa1%Tv@  
mergeSort(data, temp, mid + 1, r); k \|[=  
else Wp0e?bK_  
insertSort(data, mid + 1, r - mid); Z=ayVsJ3  
q<YteuZJ,  
for (i = l; i <= mid; i++) { 4{:W5eT!/  
temp = data; $II[b-X?S  
} /\%K7\  
for (j = 1; j <= r - mid; j++) { Q]';1#J\  
temp[r - j + 1] = data[j + mid]; H$^b.5K  
} 9I a4PPEH1  
int a = temp[l]; ?G5JAG`  
int b = temp[r]; .b4_O CGg  
for (i = l, j = r, k = l; k <= r; k++) { 9.KOrg5}L  
if (a < b) { :qV}v2  
data[k] = temp[i++]; %SRUHx[D  
a = temp; 1PMBo=SUe8  
} else { d9zI A6y  
data[k] = temp[j--]; >uok\sX  
b = temp[j]; @#T*OH  
} dQ=mg#(  
} hcw)qB,s  
} KzQ\A!qG  
_YXk ,ME!Q  
/** c2}?[\U]  
* @param data E^.y$d~dS  
* @param l G`9\v=0  
* @param i >IW0YIQy,  
*/ ;79X# hI  
private void insertSort(int[] data, int start, int len) { Wgl7)Xk.)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `<Z5/;a5W  
} YfC1.8  
} P@Wi^svj  
} UTEUVcJ\  
} w_po5[]R  
|kvom 4T  
堆排序: ^X6fgsjz  
7$(>Z^ Em  
package org.rut.util.algorithm.support; (+<SR5,/3  
|Ire#0Nwx  
import org.rut.util.algorithm.SortUtil; Do7&OBI~  
<RmI)g>'_^  
/** %]JSDb=C  
* @author treeroot u>Z0ug6x  
* @since 2006-2-2 Epm\ =s  
* @version 1.0 3~"G(UP  
*/ fF208A7U I  
public class HeapSort implements SortUtil.Sort{ .:tAZZ  
)5Ddvz>+  
/* (non-Javadoc) A KO#$OJE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AL/q6PWi  
*/ \UI7H1XDH  
public void sort(int[] data) { ] X,C9  
MaxHeap h=new MaxHeap(); [&n2 yt  
h.init(data); ]HP aM  
for(int i=0;i h.remove(); @O}%sjC1  
System.arraycopy(h.queue,1,data,0,data.length); 7Op6> i  
} fX).A`  
X>w(^L*>  
private static class MaxHeap{ ] (3e +JC  
Cf`s:A5<J  
void init(int[] data){ ]/!#:  
this.queue=new int[data.length+1]; jX^uNmb  
for(int i=0;i queue[++size]=data; 8kQ >M  
fixUp(size); Vx@JP93|  
} SI=vA\e  
} sE$!MQb  
'rJkxU{  
private int size=0; A4.Q \0  
`}gjfu -'\  
private int[] queue; YC#N],#  
SMVn2H@  
public int get() { fu3/n@L  
return queue[1]; w-?_U7'  
} dzMlfJp  
 4l+"J:,  
public void remove() { V6Kw71'9  
SortUtil.swap(queue,1,size--); oLEqy  
fixDown(1); m72r6Yq2@  
} K_ P08  
file://fixdown Qvh: hkR  
private void fixDown(int k) { y^:!]-+  
int j; WpE\N0Yg  
while ((j = k << 1) <= size) { (J8 (_MF  
if (j < size %26amp;%26amp; queue[j] j++; Tj}H3/2  
if (queue[k]>queue[j]) file://不用交换 PSz|I8 c  
break; fOEw]B#@  
SortUtil.swap(queue,j,k); T+7O+X#  
k = j; won;tO]\;@  
} m @) ~.E  
} b: UTq 7^  
private void fixUp(int k) { [(U:1&x &  
while (k > 1) { X>^St&B}fC  
int j = k >> 1; X4LU/f<f  
if (queue[j]>queue[k]) iJE  $3  
break; V dp wZ  
SortUtil.swap(queue,j,k); (K"U #Zn  
k = j; ~G.'pyW  
} ohqi4Y!j/~  
} '`Eb].s*  
a#t:+iw  
} MPx%#'Q  
Dbt"}#uit;  
} 9 |v3lGK(  
\<WRk4D  
SortUtil: =n>&Bl-Bl  
pIBL85Xe  
package org.rut.util.algorithm; 1e.V%!Xk  
m,KG}KX  
import org.rut.util.algorithm.support.BubbleSort; XVcY?_AS#  
import org.rut.util.algorithm.support.HeapSort; (LzVWz m  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4{JoeIRyz  
import org.rut.util.algorithm.support.ImprovedQuickSort; Tg|0!0qD]F  
import org.rut.util.algorithm.support.InsertSort; zKB$n.H  
import org.rut.util.algorithm.support.MergeSort; 2TB>d+  
import org.rut.util.algorithm.support.QuickSort; ssGp:{]v/  
import org.rut.util.algorithm.support.SelectionSort; e ?FjN 9  
import org.rut.util.algorithm.support.ShellSort; 33dHTV  
BH"f\oc  
/** x5[wF6A  
* @author treeroot $'FPsoH  
* @since 2006-2-2 ?-w<H!Y7  
* @version 1.0 4lMf'V7*l  
*/ *;7~aM  
public class SortUtil { X}*\/(fzl  
public final static int INSERT = 1; H&`0I$8m  
public final static int BUBBLE = 2; D?ojxHe  
public final static int SELECTION = 3; k I  
public final static int SHELL = 4; P%w)*);  
public final static int QUICK = 5; 3Au3>q,  
public final static int IMPROVED_QUICK = 6; G^E"#F  
public final static int MERGE = 7; m{T:<:q~  
public final static int IMPROVED_MERGE = 8; J:g4ES-/   
public final static int HEAP = 9; *HiN:30DZ  
6v(?Lr`D  
public static void sort(int[] data) { 2wR?ON=Q  
sort(data, IMPROVED_QUICK); @I_!q*  
} SB"Uu2)wZ  
private static String[] name={ % NSb8@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]\DZW4?'  
}; 4mYJi#e6x  
9Z, K  
private static Sort[] impl=new Sort[]{ Fo\* Cr9D  
new InsertSort(), Sep/N"7~t  
new BubbleSort(), w)}' {]P"c  
new SelectionSort(), /G*]3=cSe  
new ShellSort(), >1luLp/,$  
new QuickSort(), ;ED` 7  
new ImprovedQuickSort(), JmlMfMpXMs  
new MergeSort(), t!^ j0q  
new ImprovedMergeSort(), ZSWKVTi  
new HeapSort() 'x/pV5[hQ  
}; KV&4Ep#  
7dxTyn=  
public static String toString(int algorithm){ PydU.,^7  
return name[algorithm-1]; ]J|]IP Xy  
} G,o5JL"t  
JK.<(=y\  
public static void sort(int[] data, int algorithm) { $W}YXLFj?  
impl[algorithm-1].sort(data); '0ks`a4q  
} hbfN1 "z  
Tfsx&k\  
public static interface Sort { Lt'FA  
public void sort(int[] data); LT+QW  
} =(]yl_  
s}w?Dvo\  
public static void swap(int[] data, int i, int j) { ::<v; `l  
int temp = data; J  ZH~ {  
data = data[j]; y}aKL(AaU  
data[j] = temp; /i:c!l9  
} a ][t#`  
} \tCxz(vKz  
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