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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。 ukUGvK  
插入排序: X*\ J_  
O6OP =K!t:  
package org.rut.util.algorithm.support; Er{>p|n =  
GP#aya  
import org.rut.util.algorithm.SortUtil; k`N^Vdr  
/** d m`E!R_  
* @author treeroot :eCU/BC4  
* @since 2006-2-2 pfI"36]F  
* @version 1.0 VzVc37 Z>6  
*/ o !U 6?  
public class InsertSort implements SortUtil.Sort{ a0#J9O_  
tdu$pC6  
/* (non-Javadoc) zOiu5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {yExQbN  
*/ OtNd,U.dE  
public void sort(int[] data) { q*>&^V$M  
int temp; RVQh2'w  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d}4Y(   
} N}t 2Nu-  
} 8#g1P4  
} c3CWRi`LE  
t)}scf&^x  
} \:UIc*S  
aSnF KB  
冒泡排序: c-0#w=  
mV pMh#zw  
package org.rut.util.algorithm.support; gp\<p-}  
sdo [D  
import org.rut.util.algorithm.SortUtil; 2_Z ? #Y  
(R("H/6xs  
/** ^\S~?0^m  
* @author treeroot ilqy /fL#  
* @since 2006-2-2 H|HYo\@F#  
* @version 1.0 VB*oGG  
*/ >: g3k  
public class BubbleSort implements SortUtil.Sort{ |Ur"& Z{  
@P?~KW6<|  
/* (non-Javadoc) 71t* %  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #iHs* /85  
*/ ys kO  
public void sort(int[] data) { "L&#lfOKG  
int temp; c$yk s  
for(int i=0;i for(int j=data.length-1;j>i;j--){ CTZ8Da^  
if(data[j] SortUtil.swap(data,j,j-1); VG ;kPzze  
} lE(a%'36  
} #$8% w  
} XLrwxj0  
} yL-YzF2  
dx@-/^.  
}   t!_<~  
M,\:<kNI  
选择排序: M# %a(Y3K)  
MjC_ (cs  
package org.rut.util.algorithm.support; /^#;d UB  
4J/}]Dr5  
import org.rut.util.algorithm.SortUtil; N@Uy=?)ZJ  
:x4|X8>  
/** yj.7'{mA  
* @author treeroot 2`N,,  
* @since 2006-2-2 BdH-9n~,  
* @version 1.0 P 'od`  
*/ T~##,qQ  
public class SelectionSort implements SortUtil.Sort { ;"~ fZ2$U  
hRD=Y<>A  
/* M:[ %[+6  
* (non-Javadoc) 0?:} P  
* (Hb:?(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gL *>[@RO  
*/ %|q>pin2  
public void sort(int[] data) { ORJIo  
int temp; dQA'($  
for (int i = 0; i < data.length; i++) { UMm!B`M  
int lowIndex = i; a C\MJ9  
for (int j = data.length - 1; j > i; j--) { AW!?"xdZ  
if (data[j] < data[lowIndex]) { :fZ}o|t7  
lowIndex = j; E^/t$M|H  
} tne ST.  
} V8C:"UZ;  
SortUtil.swap(data,i,lowIndex); SVh 7zh  
} E%,^Yvh/  
} I%j|D#qY:T  
PIoLywpRn  
} SBfT20z[  
iW%I|&  
Shell排序: CFMo)"  
%Q fO8P  
package org.rut.util.algorithm.support; c]n1':FT"  
jZ~n[ f+Q  
import org.rut.util.algorithm.SortUtil; v50bdj9}k  
"8x8UgG  
/** 2db3I:;E  
* @author treeroot ;RC{<wBTx  
* @since 2006-2-2 \F/hMXDlJ  
* @version 1.0 4gz H8sF  
*/ K<SyC54  
public class ShellSort implements SortUtil.Sort{ [6%VRqY  
8"2=U6*C  
/* (non-Javadoc) $0>60<J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >_-s8t=|  
*/ :OhHb #D  
public void sort(int[] data) { 6z#acE1)M  
for(int i=data.length/2;i>2;i/=2){ 8<pzb}xK  
for(int j=0;j insertSort(data,j,i); >,$_| C  
} Bn#?zI  
} z<U-#k7nz  
insertSort(data,0,1); *rs5]U<  
} S >X:ZYYC  
[B#R94  
/** Q  Nh|Wz  
* @param data \IV1j)I"u  
* @param j 5 ZGNz1)?V  
* @param i +./H6!  
*/ 2Mc3|T4)U  
private void insertSort(int[] data, int start, int inc) { cdl&9-}  
int temp; A@1W}8qY:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (|:M&Cna]  
} =jOv] /  
} {JZZZY!n2  
} &5fJPv &  
eg\v0Y!rI  
} aQ?/%\>  
"GMBjT8  
快速排序: B%)%  
r@h5w_9  
package org.rut.util.algorithm.support; #~}nFY.  
&C, 'x4c"  
import org.rut.util.algorithm.SortUtil; DCIxRPw  
C*)3e*T*  
/** ~?4PBq  
* @author treeroot Vd,jlt.t  
* @since 2006-2-2 o{* e'4  
* @version 1.0 QdH\LL^8R4  
*/ J>wt (] y  
public class QuickSort implements SortUtil.Sort{ \qdHX  
Bu<M\w?7Y  
/* (non-Javadoc) nBjqTud  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v5!d$Vctu  
*/ [842&5Pd?  
public void sort(int[] data) { DBW[{D E  
quickSort(data,0,data.length-1); fHE <(  
} m4hX 'F  
private void quickSort(int[] data,int i,int j){ jVv0ST*z  
int pivotIndex=(i+j)/2; ieDk;  
file://swap #^l L5=  
SortUtil.swap(data,pivotIndex,j); L-jJg,eY  
"bFTk/  
int k=partition(data,i-1,j,data[j]); @Owb?(6?  
SortUtil.swap(data,k,j); H[s(e5 6z  
if((k-i)>1) quickSort(data,i,k-1); kO.%9wFbz  
if((j-k)>1) quickSort(data,k+1,j); <k eVrCR  
d A@]!  
}  8n#HFJ~  
/** :1cV;gJ  
* @param data .0S~872  
* @param i mXRB7k  
* @param j ][gq#Vx@  
* @return Y_;#UU689  
*/ s:>Va GC  
private int partition(int[] data, int l, int r,int pivot) { >:AARx%  
do{ XX7{-Y y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); / ;$#d}R  
SortUtil.swap(data,l,r); @TLS<~  
} ^crCy-`#  
while(l SortUtil.swap(data,l,r); kw >v:F<M  
return l; lGV0 *Cji  
} oX#Q<2z*  
fM]+SMZy  
} ypbe!Y<i]  
4x {0iav  
改进后的快速排序: 5A)2} D]  
(Mo*^pVr  
package org.rut.util.algorithm.support; K SbKEA  
w j*,U~syB  
import org.rut.util.algorithm.SortUtil; 04LI]'  
Pu7_ v  
/** ]{)a,c NG  
* @author treeroot [;r)9mh7  
* @since 2006-2-2 |'.*K]Yp  
* @version 1.0 $*^kY;  
*/ :#LLo}LKp  
public class ImprovedQuickSort implements SortUtil.Sort { (|[2J3ZET  
d?s<2RkPT  
private static int MAX_STACK_SIZE=4096; u!!Y=!y*<  
private static int THRESHOLD=10; qW$<U3u}  
/* (non-Javadoc) <6EeD5{*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 03|PYk 6EW  
*/ \l'm[jy>  
public void sort(int[] data) { ^Ew]uN>,  
int[] stack=new int[MAX_STACK_SIZE]; |jQ:~2U|   
h%o%fH&F!  
int top=-1; xHUsFm s  
int pivot; l Q'I  
int pivotIndex,l,r; sd,J3  
t9,\Hdo  
stack[++top]=0; eK6hS_E  
stack[++top]=data.length-1; >QjAoDVX?  
X}=n:Ql'YY  
while(top>0){ <>dT64R|  
int j=stack[top--]; NaPt"G  
int i=stack[top--]; KK1 gNC4R  
?zeJ#i  
pivotIndex=(i+j)/2; 2QD3&Q9  
pivot=data[pivotIndex]; ~k\fhx  
zjJ *n8l  
SortUtil.swap(data,pivotIndex,j);  J}htu  
-(~.6WnhS  
file://partition I!^;8Pg  
l=i-1; 4~k\j  
r=j; GQt8p[!  
do{ 8qY79)vD4E  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "oTHq]Ku  
SortUtil.swap(data,l,r); ))R5(R  
} Of- Rx/  
while(l SortUtil.swap(data,l,r); I3=%h  
SortUtil.swap(data,l,j); Z8# (kmBdB  
`e(c^z#  
if((l-i)>THRESHOLD){ $}<PL}+  
stack[++top]=i; aDq5C-MzG  
stack[++top]=l-1; oo,uO;0G  
} )2pbpbWX>  
if((j-l)>THRESHOLD){ $LKIT0  
stack[++top]=l+1; a;rdQ>  
stack[++top]=j; b1^vd@(lx  
} #Vl 0.l3  
~c8? >oN(  
} z{[xze-f  
file://new InsertSort().sort(data); ?HTj mIb  
insertSort(data); 1QqYQafA  
} "JVkVp[5D+  
/** b o0^3]Z  
* @param data $56Z#'(D  
*/ P<PJ)>  
private void insertSort(int[] data) { bBu,#Mc  
int temp; ,R'@%,/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n1qQ+(xC  
} Q~814P8]  
} pA`+hQNN  
} S\''e`Eb"5  
3 j!3E  
} J1/?JfF  
l/BLUl~z  
归并排序: J c g,#@  
9iXeBC  
package org.rut.util.algorithm.support; /|r^W\DV&x  
l*ayd>`~x  
import org.rut.util.algorithm.SortUtil; il}%7b-  
I'\kFjc  
/** ]p*l%(dhY  
* @author treeroot A:>01ZJ5S+  
* @since 2006-2-2 L=c!:p|7)  
* @version 1.0 .9,zL=)Ba  
*/ `k OD[*  
public class MergeSort implements SortUtil.Sort{ .EpV;xq}  
UUSq$~Ct  
/* (non-Javadoc) E_Im^a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bIGHGd  
*/ wDcj,:h`  
public void sort(int[] data) { ?bPRxR  
int[] temp=new int[data.length]; EM]s/LD@%  
mergeSort(data,temp,0,data.length-1); `o<' x.I  
} t]>Lh>G  
Ol1e/Wv  
private void mergeSort(int[] data,int[] temp,int l,int r){ Kpb#K[(]&  
int mid=(l+r)/2; anIAM  
if(l==r) return ; 7Ok;Lt!x  
mergeSort(data,temp,l,mid); =NOH:#iQ  
mergeSort(data,temp,mid+1,r); q+P|l5_ t  
for(int i=l;i<=r;i++){ #rxVd 7f  
temp=data; *j]9vktH  
} 6^uq?  
int i1=l; 8'~[pMn`  
int i2=mid+1; pF&(7u  
for(int cur=l;cur<=r;cur++){ 0.dgoq 3u  
if(i1==mid+1) P9=?zh 6G.  
data[cur]=temp[i2++]; Em?d*z  
else if(i2>r) &Ts-a$Z7?S  
data[cur]=temp[i1++]; aD=a,  
else if(temp[i1] data[cur]=temp[i1++]; @|<<H3I  
else )A!>=2M `  
data[cur]=temp[i2++]; 5Ycco,x  
} -M%_\;"de  
} Ae69>bkE0  
8d?g]DEN)6  
} A6GE,FhsG  
=3q/F7-  
改进后的归并排序: f~Fm4 >\(  
hy}8Aji&  
package org.rut.util.algorithm.support; $wmvKQc{lx  
>2~+.WePu  
import org.rut.util.algorithm.SortUtil; io,M{Ib  
Of{/t1o?  
/** wSb 1"a  
* @author treeroot B+[A]dgS  
* @since 2006-2-2 O<96/a'  
* @version 1.0 ~\=1'D^6CK  
*/  -QOw8vm  
public class ImprovedMergeSort implements SortUtil.Sort { dYSr4p b  
I *x[:)X8  
private static final int THRESHOLD = 10; `VKf3&|<A  
AgV G`q  
/* ?"zY" *>4  
* (non-Javadoc) ^&bRX4pYo  
* Xv< B1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fRy^Q_~,  
*/ }| J79s2M  
public void sort(int[] data) { T^T[$26  
int[] temp=new int[data.length]; N-I5X2  
mergeSort(data,temp,0,data.length-1); nA P.^_K  
} <@}I0  
zunV<2~(2}  
private void mergeSort(int[] data, int[] temp, int l, int r) { vFE;D@bz:  
int i, j, k; o4*+T8[|5  
int mid = (l + r) / 2; p3]_}Y D[#  
if (l == r) "*LD 3  
return; ##@$|6  
if ((mid - l) >= THRESHOLD) 9Xl`pEhC  
mergeSort(data, temp, l, mid); F;gx%[$GX  
else G 16!eDMt  
insertSort(data, l, mid - l + 1); kqce[hgs<  
if ((r - mid) > THRESHOLD) C0S^h<iSe*  
mergeSort(data, temp, mid + 1, r); S}$r>[t  
else _Qh z3'I1  
insertSort(data, mid + 1, r - mid); Kw8u`$Ad7  
\e!vj.PU  
for (i = l; i <= mid; i++) { S+'rG+NJ  
temp = data; GP&vLt51  
} R2(3 >`FJ  
for (j = 1; j <= r - mid; j++) { ({JHZ6uZ  
temp[r - j + 1] = data[j + mid]; N@Y ljz|  
} = M]iIWQ@`  
int a = temp[l]; OE4+GI.r-  
int b = temp[r]; taFn![}/!g  
for (i = l, j = r, k = l; k <= r; k++) { s3]?8hXd  
if (a < b) { 0 ;b[QRmy  
data[k] = temp[i++]; v^zu:Z*  
a = temp; hoQs @[  
} else { +)j1.X  
data[k] = temp[j--]; ^5A t?I8  
b = temp[j]; \MjJ9u `8  
} &}?$i7x5  
} 3&6#F"7  
} FBpH21|/y  
~=KJzOS,S  
/** ={5#fgK>  
* @param data ;Ra+=z}>  
* @param l (y?I Tz9  
* @param i "TUe%o  
*/ e.@uhB.  
private void insertSort(int[] data, int start, int len) { mwY IJy[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9*E7}b,  
} Mz1G5xcl  
} oyNSh8c7c  
} zGc: @z  
} !'j?.F $}  
x7vctjM|  
堆排序: =xNv\e  
^Ve<>b  
package org.rut.util.algorithm.support; Pt&(npjN,  
?gPKcjgoH!  
import org.rut.util.algorithm.SortUtil; -0_d/'d  
rp6q?3=g  
/** ^':!1  
* @author treeroot @#P,d5^G  
* @since 2006-2-2 549jWG  
* @version 1.0 {5d9$v7k4  
*/ @FC"nM  
public class HeapSort implements SortUtil.Sort{ RPIyO  
X^\> :<  
/* (non-Javadoc) !A>z(eIsv`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f]G>(V=i  
*/ hFk3[zTy  
public void sort(int[] data) { p/2jh&  
MaxHeap h=new MaxHeap(); &q`q4g&7  
h.init(data); 2-"0 ^n{  
for(int i=0;i h.remove(); 0]D{Va  
System.arraycopy(h.queue,1,data,0,data.length); {0;3W7  
} f8SL3+v  
t ^[8RhD  
private static class MaxHeap{ kl"+YF5/  
4n %?YQ[t  
void init(int[] data){ Z0`T\ay  
this.queue=new int[data.length+1]; DhX#E&  
for(int i=0;i queue[++size]=data; A<6%r7&B'  
fixUp(size); *loOiM\5a  
}  )@ ~J  
} }?&k a$rI  
>yXN,5d[  
private int size=0; #U*_1P0h  
RN)dS>$  
private int[] queue; :> &fV  
y!5$/`AF  
public int get() { r1<F  
return queue[1]; }BiiE%a  
} Y3h/~bM%  
Yp0/Ab(v  
public void remove() { dgDy5{_  
SortUtil.swap(queue,1,size--); 8/t$d#xHI  
fixDown(1); *26334B.R  
} `;YU.*  
file://fixdown 7HVZZ!>~  
private void fixDown(int k) { _;4 [Q1  
int j; w=|GJ 0  
while ((j = k << 1) <= size) { ]r3Kg12Mi  
if (j < size %26amp;%26amp; queue[j] j++; %?aS#4jI  
if (queue[k]>queue[j]) file://不用交换 DAwqo.m  
break; CiR%Ujf  
SortUtil.swap(queue,j,k); K_ lVISBQ  
k = j; /B5-Fx7j3  
} nuoPg3Nl  
} <" @zn  
private void fixUp(int k) { Ne $"g[uFU  
while (k > 1) { tX!n sm1  
int j = k >> 1; pA;-v MpMj  
if (queue[j]>queue[k]) lpRR&  
break; i/b'4o=8  
SortUtil.swap(queue,j,k); BC,.^"fA6  
k = j; '|7Woxl9  
} '+ xu#R  
} RUr=fEH  
4lqH8l.  
} H'MJ{r0,  
QI]Ih  
} 1xU3#b&2tC  
GabYfUkO  
SortUtil: kQaSbpNmH  
zZiJ 9 e  
package org.rut.util.algorithm; }n7t h  
: L_BG)dM  
import org.rut.util.algorithm.support.BubbleSort; 341?0 %=  
import org.rut.util.algorithm.support.HeapSort; U$H @ jJ*  
import org.rut.util.algorithm.support.ImprovedMergeSort; 3+J0!FVla  
import org.rut.util.algorithm.support.ImprovedQuickSort; `:O\dN>ON  
import org.rut.util.algorithm.support.InsertSort; >a1{397Y}  
import org.rut.util.algorithm.support.MergeSort; V:/7f*n7  
import org.rut.util.algorithm.support.QuickSort; UZEI:k,dv  
import org.rut.util.algorithm.support.SelectionSort; -o+74=E8[?  
import org.rut.util.algorithm.support.ShellSort; @HBEt^!  
<`!PCuR  
/** .)|a2d ~F  
* @author treeroot z4@k$ L8  
* @since 2006-2-2 BZb]SoAL  
* @version 1.0 u*7Z~R  
*/ XhdSFxW}  
public class SortUtil { OG3/-K8R  
public final static int INSERT = 1; q8:{Nk  
public final static int BUBBLE = 2; y fSM  
public final static int SELECTION = 3; `.#@@5e  
public final static int SHELL = 4; 4f~["[*ea  
public final static int QUICK = 5; #k<":O  
public final static int IMPROVED_QUICK = 6; T@%m7|P  
public final static int MERGE = 7; |wox1Wt|E  
public final static int IMPROVED_MERGE = 8; r}u%#G+K,  
public final static int HEAP = 9; H0a/(4/xg  
Dml*T(WM>  
public static void sort(int[] data) { [!^-J}^g~\  
sort(data, IMPROVED_QUICK); 1Uf*^WW4  
} dbS +  
private static String[] name={ l7JY]?p  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 1!p/6  
}; x'Pi5NRE  
mL~z~w*s  
private static Sort[] impl=new Sort[]{ w6 2=06`@  
new InsertSort(), uhV0J97  
new BubbleSort(), Px M!U!t  
new SelectionSort(), 7&O`p(j  
new ShellSort(), qQxz(}REu9  
new QuickSort(), .bf<<+'o  
new ImprovedQuickSort(), PN$ .X"D8  
new MergeSort(), Sd IX-k.  
new ImprovedMergeSort(), aFY_:.o2k`  
new HeapSort() *m+5Pr`7  
}; U,1AfzlF  
iRG?# "  
public static String toString(int algorithm){ NHw x:-RH  
return name[algorithm-1]; xx*2?i  
} Lt#'W  
rZ_>`}O2  
public static void sort(int[] data, int algorithm) { &~B5.sppnB  
impl[algorithm-1].sort(data); oUx[+Gnv  
} rZbEvS  
ql5x2n  
public static interface Sort { 5 / m$)wE  
public void sort(int[] data); RV-hIdAU  
} !C:rb   
Y{f7 f'_  
public static void swap(int[] data, int i, int j) { {OT:3SS7  
int temp = data; w W$(r-  
data = data[j]; ,]Zp+>{  
data[j] = temp; LF*Q!  
} 5;)*T6Y  
} 0;~yZ?6_F  
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