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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。 {SROg;vA  
插入排序: .` ,YUr$.  
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package org.rut.util.algorithm.support; z ^a,7}4  
Y%wF;I1x  
import org.rut.util.algorithm.SortUtil; Uyi_B.:`  
/** =cRJtn  
* @author treeroot tb@/E  
* @since 2006-2-2 KZDB\T  
* @version 1.0 TR: D  
*/  "&C'K  
public class InsertSort implements SortUtil.Sort{ &1B)mj  
.6.oqb  
/* (non-Javadoc) DUW;G9LP$-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u4.-AY {  
*/ c]xpp;%]  
public void sort(int[] data) { KgKV(q=  
int temp; o'D6lkf0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2V F|T'h  
} "t\rjFw  
} 6dg[   
} 9"<)DS  
<'B`b  
} U'lrdc"Q  
tk, H vE  
冒泡排序: 0Y"==g+ >f  
vEfX'gyk  
package org.rut.util.algorithm.support; RHB>svT^K>  
L2K4nTA  
import org.rut.util.algorithm.SortUtil; 0n3O;=[aV  
yil{RfBEr_  
/** i>e75`9  
* @author treeroot GbNVcP.ocP  
* @since 2006-2-2 y< 146   
* @version 1.0 Vw)\#6FL  
*/ e@X~F6nP  
public class BubbleSort implements SortUtil.Sort{ O'5(L9,  
E[_Z%zd^  
/* (non-Javadoc) <pPI:D@G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P^1rNB  
*/ Vwv O@G7A  
public void sort(int[] data) { :.sK:W("v  
int temp; t/q\Ne\\,  
for(int i=0;i for(int j=data.length-1;j>i;j--){ O gycP4z[  
if(data[j] SortUtil.swap(data,j,j-1); F /t;y\)  
} ,Xb:f/lB  
} rU'&o) a^  
} #UGbSOoCtn  
} oA42?I ^  
8SKDL[rN  
} [& hdyLt  
;l?>+m@H  
选择排序: Gzm[4|nO^  
v_G4:tY  
package org.rut.util.algorithm.support; d5WE^H)E.  
I#9K/[  
import org.rut.util.algorithm.SortUtil; =#>P !  
qLPI^g,  
/** lkl#AH  
* @author treeroot ,cbP yg  
* @since 2006-2-2 1lx\Pz@ol  
* @version 1.0 _ k>j?j-  
*/ /?by4v73P  
public class SelectionSort implements SortUtil.Sort { 1bvL  
9`vse>,-hg  
/* 2@A7i<p  
* (non-Javadoc) L(X:=) !K0  
* s!UC{)g,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dn5T7a~   
*/ /+66y=`UJ  
public void sort(int[] data) { /=-E`%R}!  
int temp; 2U#OBvNU  
for (int i = 0; i < data.length; i++) { @c.QrKSaD  
int lowIndex = i; Xv'64Nc!;  
for (int j = data.length - 1; j > i; j--) { tc# rL   
if (data[j] < data[lowIndex]) { guf+AVPno  
lowIndex = j; ~%GUc ~  
} 5a_K|(~3I  
} U>:p`@  
SortUtil.swap(data,i,lowIndex); A}oR,$D-  
} * 9*I:Uh57  
} B|!YGf L  
E7j]"\~i  
} | pJ.73  
|NM.-@1  
Shell排序: }*+ca>K  
U8.DPRa  
package org.rut.util.algorithm.support; 6:h!gY  
KL -8Aj~  
import org.rut.util.algorithm.SortUtil; gE8>5_R|  
vO"AJ`_  
/** ]bX.w/=  
* @author treeroot O-:~6A  
* @since 2006-2-2 /S|Pq!4<  
* @version 1.0 W]reQ&<Z  
*/ s<^UAdLnl  
public class ShellSort implements SortUtil.Sort{ 7] ~'8  
B%r)~?6DM  
/* (non-Javadoc) LR`/pet  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aP4r6lLv+  
*/ I-+D+DhRx  
public void sort(int[] data) { WxIP~  
for(int i=data.length/2;i>2;i/=2){ !q$IB?8   
for(int j=0;j insertSort(data,j,i); L18Olu  
} McA,  
} @n})oAC,  
insertSort(data,0,1); d)q{s(<;  
} }.e*=/"MB  
T\2cAW5  
/** @dO~0dF  
* @param data u6|7P<HUfb  
* @param j "esV#%:#J  
* @param i ?K}/b[[0v  
*/ f$/Daq <M  
private void insertSort(int[] data, int start, int inc) { < v0 d8  
int temp; :a`l_RMU  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); b/2t@VlL  
} _D z4 }:9  
} ~Uga=&  
} v bh\uv&  
Vwl`A3Y  
} bC"#.e  
w' U;b  
快速排序: O^`Y>>a  
$L;7SY?  
package org.rut.util.algorithm.support; IWKQU/l!  
9I.="b=J)  
import org.rut.util.algorithm.SortUtil; ]k>S0  
[?]s((A~B  
/** _L&C4 <e'  
* @author treeroot Q2iu}~  
* @since 2006-2-2 Rrk3EL  
* @version 1.0 -S9$C*t  
*/ xNl_Q8Z?R^  
public class QuickSort implements SortUtil.Sort{ D(L%fK`+  
%hOe `2#$  
/* (non-Javadoc) +vZ-o{}.jO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N<O^%!buR  
*/ *Q5/d9B8TN  
public void sort(int[] data) { wYNh0QlBH  
quickSort(data,0,data.length-1); ].` i`.T  
} 'N'EC`R  
private void quickSort(int[] data,int i,int j){ Z?1.Y7Npr  
int pivotIndex=(i+j)/2; -YRF^72+  
file://swap 8]+hfB/  
SortUtil.swap(data,pivotIndex,j); 8+ Hho@=  
U%U%a,rA5s  
int k=partition(data,i-1,j,data[j]); h.G/HHz  
SortUtil.swap(data,k,j); DTgF,c  
if((k-i)>1) quickSort(data,i,k-1); [%Y Cupr#  
if((j-k)>1) quickSort(data,k+1,j); o^5xCK:Oi2  
iQs(Dh=*  
} 72luTR Q  
/** WEWNFTI  
* @param data }&EPH}V2n  
* @param i CA:t](xqQ  
* @param j @K2q*d  
* @return keCM}V`?"  
*/ J`V7FlM  
private int partition(int[] data, int l, int r,int pivot) { 6fQQKM@a|  
do{ vvdC.4O  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W aks*^|  
SortUtil.swap(data,l,r); r!j_KiUy  
} ~eE2!/%9  
while(l SortUtil.swap(data,l,r); D0tI  
return l; y \V!OY@  
} =][[TH  
X_O(j!h  
} 1j3mTP  
A"i40 @+  
改进后的快速排序: XeJx/'9o{  
"J7=3$CA  
package org.rut.util.algorithm.support; l.Qj?G  
YzsHec  
import org.rut.util.algorithm.SortUtil; So,EPB+  
7$}lkL  
/** $)z(4Ev  
* @author treeroot K^?/  
* @since 2006-2-2 |*jnJWH4:  
* @version 1.0 ~ b\bpu  
*/ 3S +.]v>  
public class ImprovedQuickSort implements SortUtil.Sort { RE7 I"  
#!C/~"Y*`|  
private static int MAX_STACK_SIZE=4096; 2NqlE  
private static int THRESHOLD=10; kf.w:X"i  
/* (non-Javadoc) - =QA{n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ->$Do$  
*/ SU Hyg/|F  
public void sort(int[] data) { gQ/-.1Pz$  
int[] stack=new int[MAX_STACK_SIZE]; )t&j0`Yq  
$oe:km1-D  
int top=-1; `epO/Uu\~u  
int pivot; ( *UMpdj  
int pivotIndex,l,r; 6# ,2  
c$bb0J%  
stack[++top]=0; 45q-x_  
stack[++top]=data.length-1; fPa FL}&  
Wyw/imr  
while(top>0){ D$!(Iae  
int j=stack[top--]; \:%e 6M  
int i=stack[top--]; #-Ehg4W  
J *5 )g  
pivotIndex=(i+j)/2; yM=% a3  
pivot=data[pivotIndex]; yiWBIJ2Wu9  
I?EtU/AD  
SortUtil.swap(data,pivotIndex,j); >5'C<jc C  
x9p,j  
file://partition ^fQ ]>/u  
l=i-1; v&(PM{3o  
r=j; 4D0=3Vy  
do{ IlN9IF\9L  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L$=6R3GI  
SortUtil.swap(data,l,r); DwMq  
} 5k)/SAU0  
while(l SortUtil.swap(data,l,r); a;r,*zZ="  
SortUtil.swap(data,l,j); jhr: QS/9  
[D=ba=r0X  
if((l-i)>THRESHOLD){ j(AN] g:  
stack[++top]=i; " ;8H;U`  
stack[++top]=l-1; iOYC1QFi?  
} mG*[5?=r  
if((j-l)>THRESHOLD){ F\^9=}b_i  
stack[++top]=l+1; ifHQ2Ug 9  
stack[++top]=j; #/=s74.b  
} S|CN)8Jsi  
@A GM=v  
} *I:^g  
file://new InsertSort().sort(data); BGh1hyJ8d  
insertSort(data); \vjIw{   
} 3WHj|ENW  
/** x\z* iv  
* @param data KzZ|{ !C  
*/ G6]W'Kk  
private void insertSort(int[] data) { (,*e\o  
int temp; Lq : !?)I  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f*)8bZDD  
} 2uujA* ^  
} #e|G!'wdj  
} 5 Yj qN  
'M8wjU  
} t@m!k+0  
VbLwhA2W}F  
归并排序: X` r~cc  
YGFE(t;lPU  
package org.rut.util.algorithm.support; %xv }  
Q"rQVO  
import org.rut.util.algorithm.SortUtil; j]Y`L?!Q  
~U"puEftbs  
/** .nh }f}j  
* @author treeroot +||y/}1  
* @since 2006-2-2 QfPsF@+-`7  
* @version 1.0 Esx"nex  
*/ r I)Y W0  
public class MergeSort implements SortUtil.Sort{ d rRi<7 i  
X$mCn#8m  
/* (non-Javadoc) /<zBjvr%%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A><w1-X&=o  
*/ iR(=< >  
public void sort(int[] data) { m ^?a/  
int[] temp=new int[data.length]; TQ hu$z<  
mergeSort(data,temp,0,data.length-1); y(81| c#  
} uUmkk  
': fq/k3;&  
private void mergeSort(int[] data,int[] temp,int l,int r){ iG+hj:5  
int mid=(l+r)/2; )DG>omCY  
if(l==r) return ; ^W8kt  
mergeSort(data,temp,l,mid); LeP;HP|  
mergeSort(data,temp,mid+1,r);  Q6qIx=c4  
for(int i=l;i<=r;i++){ B=!&rKF  
temp=data; J]mG!#9  
} E]@$,)nC  
int i1=l; ,76xa%k(U|  
int i2=mid+1; 4{zz-4=  
for(int cur=l;cur<=r;cur++){ 9Su4nt`i  
if(i1==mid+1) 'aV/\a:*  
data[cur]=temp[i2++]; [T}Lq~  
else if(i2>r) d1]1bN4`"0  
data[cur]=temp[i1++]; .R";2f3  
else if(temp[i1] data[cur]=temp[i1++]; }.DE521u  
else M_BG :P5  
data[cur]=temp[i2++]; 'GyO  
} 3:]c>GPQ  
} oeKVcVP|'&  
.Tm m  
} :)*+ aS"  
s^\ *jZ6  
改进后的归并排序: %:S4OT8]  
C 9{8!fYp  
package org.rut.util.algorithm.support; iY[+BI:  
o(L8 -F  
import org.rut.util.algorithm.SortUtil; #Ch*a.tI@  
w! kWG,{C  
/** [C-4*qOaa2  
* @author treeroot j0wpaIp  
* @since 2006-2-2 ybY[2g2QJ  
* @version 1.0 9\ulS2d  
*/ Q\moR^>  
public class ImprovedMergeSort implements SortUtil.Sort { iZ( U]  
hj4mbL  
private static final int THRESHOLD = 10; " ZYdJHM  
p[^a4E_v  
/* UFSbu5 j  
* (non-Javadoc) I%<LLkQ  
* |PNPOj0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yQz6K6p  
*/ fw3P?_4;*  
public void sort(int[] data) { 7TU(~]Z  
int[] temp=new int[data.length]; Abc%VRsT  
mergeSort(data,temp,0,data.length-1); )W,.xP  
} x>!bvZ2  
;R[w}#Sm  
private void mergeSort(int[] data, int[] temp, int l, int r) { E#zLm  
int i, j, k; I<+i87=  
int mid = (l + r) / 2; q]2t3aY%  
if (l == r) ;@<Rh^g]  
return; kMx^L;:n  
if ((mid - l) >= THRESHOLD) H.)Y*zK0.  
mergeSort(data, temp, l, mid); SNOML7pd  
else dJ(<zz+;b  
insertSort(data, l, mid - l + 1);   -]. a0  
if ((r - mid) > THRESHOLD) $<da<}b  
mergeSort(data, temp, mid + 1, r); /UG]hJ-wn  
else ,_M  
insertSort(data, mid + 1, r - mid); w!|jL $5L  
J?%ecCN  
for (i = l; i <= mid; i++) { H3 >49;`  
temp = data; S Rb-eDk'  
} $)#?4v<  
for (j = 1; j <= r - mid; j++) { d=C&b]  
temp[r - j + 1] = data[j + mid]; 1smKU9B2)  
} #ZyY(S1.  
int a = temp[l]; $W;f9k@C!  
int b = temp[r]; !nDiAjj  
for (i = l, j = r, k = l; k <= r; k++) { w| eVl{~p  
if (a < b) { )}$]~ f4R  
data[k] = temp[i++]; I~F]e|Ehqr  
a = temp; XGb*LY+Db6  
} else { - !QVM\t  
data[k] = temp[j--]; QAzwNXE+  
b = temp[j]; (91 YHhk{  
}  rrP_7D  
} zQ#2BOx1  
} u?rs6A[h#  
0[ZB^  
/** ^AF~k#R  
* @param data Oy_%U*  
* @param l s4`,Z*H  
* @param i *cP(3n3]R  
*/ ?mHu eX  
private void insertSort(int[] data, int start, int len) { WX* uhR  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *. 1S  
} x~QZVL=:  
} 4MrUo9L$s  
} #.{ddY{  
} &!F"3bD0  
-Q6Vz=ku  
堆排序: &Jd_@F#J  
~"VM_Lz]5  
package org.rut.util.algorithm.support; 9]vy#a#  
f^)iv ]p  
import org.rut.util.algorithm.SortUtil; M#k$[w}=  
;}H*|"z;!  
/** @E4ya$A)F  
* @author treeroot uD\rmO{  
* @since 2006-2-2 9-Z ?  
* @version 1.0 wb>"'%  
*/ 26}fB  
public class HeapSort implements SortUtil.Sort{ @JPz|  
D63?f\  
/* (non-Javadoc) ~^PNMZk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \]0#jI/:  
*/ E|A~T7G=  
public void sort(int[] data) { GX=U6n>  
MaxHeap h=new MaxHeap(); 3^iVDbAW{  
h.init(data); _*cKu>,O  
for(int i=0;i h.remove(); s"5nfl  
System.arraycopy(h.queue,1,data,0,data.length); #^tnRfS"  
} 2 sj: &][R  
|\xTcS|d  
private static class MaxHeap{ ?{P$|:ha  
7x]q>Y8T  
void init(int[] data){ m@']%X*(,  
this.queue=new int[data.length+1]; L|nFN}da  
for(int i=0;i queue[++size]=data; a ?\:,5=  
fixUp(size); TR%8O;  
} C`-CfZZ  
} X|yVRQ?F`  
"ZL_  
private int size=0; Gx*B(t]4y  
9 e|[9  
private int[] queue; x`Wb9[u8  
!DUOi4I  
public int get() { `(/xj{"Fr}  
return queue[1]; RXo6y(^  
} @yj~5Gf(j  
4];>O  
public void remove() { d)0|Q  
SortUtil.swap(queue,1,size--); OdO n wY  
fixDown(1); D< kf/hj  
} ,g4T>7`&U%  
file://fixdown Dk&(QajL  
private void fixDown(int k) { I Bko"|e@  
int j; <9\Lv]ng  
while ((j = k << 1) <= size) { I2-ue 63 ?  
if (j < size %26amp;%26amp; queue[j] j++; C$$Zwgy  
if (queue[k]>queue[j]) file://不用交换 `sA xk  
break; Hy -)yR  
SortUtil.swap(queue,j,k); ;mg.} fI  
k = j; M`7[hr  
} #K*p1}rf  
} =$%-RX7  
private void fixUp(int k) { A-d<[@d0  
while (k > 1) { G$luGxl[  
int j = k >> 1; wn|;Li  
if (queue[j]>queue[k]) k!G{#(++&6  
break; FS!9 j8  
SortUtil.swap(queue,j,k); 4"\x#  
k = j; @$Yk#N;&(  
} {:=W) 37U  
} ]1eZ<le`6  
_ nz^+  
} 7HQL^Q  
6, |>;,U7  
} rCsC}2O  
HR?bnkv|id  
SortUtil: =T#hd7O`V  
l>L?T#v!_  
package org.rut.util.algorithm; s];0-65)  
>DbG )0|  
import org.rut.util.algorithm.support.BubbleSort; _zzT[}  
import org.rut.util.algorithm.support.HeapSort; kM@e_YtpY  
import org.rut.util.algorithm.support.ImprovedMergeSort; .JTRFk{W  
import org.rut.util.algorithm.support.ImprovedQuickSort; c}|} o^  
import org.rut.util.algorithm.support.InsertSort; 4^k8| # c  
import org.rut.util.algorithm.support.MergeSort; /reGT!u  
import org.rut.util.algorithm.support.QuickSort; Q@8(e&{#W  
import org.rut.util.algorithm.support.SelectionSort; T XT<6(  
import org.rut.util.algorithm.support.ShellSort; LN5BU,4=  
UtC<TBr  
/** Q[%G`;e#  
* @author treeroot MiKq|  
* @since 2006-2-2 f:y:: z  
* @version 1.0 Z0O0Q=e\Y  
*/ MRZN4<}9  
public class SortUtil { W voIh4]  
public final static int INSERT = 1; s<Nw)Ynw  
public final static int BUBBLE = 2; NH:Bdl3  
public final static int SELECTION = 3; { .0I!oWv  
public final static int SHELL = 4; 0v6Z 4Ahpo  
public final static int QUICK = 5; osmCwM4O  
public final static int IMPROVED_QUICK = 6; /VP #J<6L  
public final static int MERGE = 7; T+t7/PwC;  
public final static int IMPROVED_MERGE = 8; L?P[{Ohh/  
public final static int HEAP = 9; PMX'vA`  
@MoCEtt  
public static void sort(int[] data) { keKsLrd  
sort(data, IMPROVED_QUICK); ;Xqi;EA  
} 6' \M:'<0e  
private static String[] name={ K6)IBV;  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @3 +   
}; EZVgTySd  
^^24a_+2  
private static Sort[] impl=new Sort[]{ ^vv 1cft  
new InsertSort(), E7.{SGH}  
new BubbleSort(), Im};wJ&  
new SelectionSort(), C OL"/3r  
new ShellSort(), Jk:ZO|'Z  
new QuickSort(), &B1!,joH~  
new ImprovedQuickSort(), :/Z1$xS  
new MergeSort(), {w,<igh  
new ImprovedMergeSort(), <VQ@I  
new HeapSort() (KfQ'B+  
}; xF YHv@g  
|5q,%9_  
public static String toString(int algorithm){ J-azBi  
return name[algorithm-1]; ^JY:$)4["  
} .b!HEi<F  
ti]8_vP}*  
public static void sort(int[] data, int algorithm) { teLZplC=f  
impl[algorithm-1].sort(data); {K|ds($ 5  
} >MhZ(&iD  
q1 BpE8  
public static interface Sort { _{}^]ZB  
public void sort(int[] data); MCIuP`sC|  
} sYSq>M  
Jvj* z6/a  
public static void swap(int[] data, int i, int j) { Cv&>:k0V  
int temp = data; 9KT85t1#  
data = data[j]; )(1tDQ`L>  
data[j] = temp;  n$>_2v  
} "]=XB0)  
} EiDpy#f}  
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