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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。 h`f$]_c  
插入排序: -lm)xpp1  
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package org.rut.util.algorithm.support; lESv  
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import org.rut.util.algorithm.SortUtil; &1ZUMc  
/** oqbhb1D1<  
* @author treeroot >35W{ d  
* @since 2006-2-2 H`1q8}m  
* @version 1.0 =:'\wx X  
*/ k{D0&  
public class InsertSort implements SortUtil.Sort{ st)qw]Dn;Y  
i@mS8%|l  
/* (non-Javadoc) i(> WeC+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3!vnSX(iv  
*/ U'@ ![Fp  
public void sort(int[] data) { z! :0%qu  
int temp; WV}HN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Sg*+!  
} 3%)@c P:?  
} @D>qo=KPM  
} I>{o]^xw-D  
U7HfDDh  
} +QP(ATdM  
oSIP{lfp2Q  
冒泡排序: EVP{7}K1  
"r1 !hfIYf  
package org.rut.util.algorithm.support; 2}15FXgN  
'3?-o|v@D  
import org.rut.util.algorithm.SortUtil; o pTH6a  
WjOP2CVv|  
/** $$i Gs6az  
* @author treeroot #n]K$k>  
* @since 2006-2-2 oxL)Jx\c9A  
* @version 1.0 [}yPy))A  
*/ }46Zfg\T6n  
public class BubbleSort implements SortUtil.Sort{ }{)Rnb@ >  
nDyA][  
/* (non-Javadoc) 6j95>}@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '}IGV`c  
*/ 6-FM<@H{  
public void sort(int[] data) { RK=Pm7L:`y  
int temp; S0M i  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0#4A0[vV  
if(data[j] SortUtil.swap(data,j,j-1);  \>||  
} 2_}oOt?qiM  
} LXaq  
} @saK:z  
} @WNqD*)1  
~tn$AtK  
} 2MmHO2  
bOSqD[?  
选择排序: NF7  
z/fSs tN  
package org.rut.util.algorithm.support; ,&y_^-|d  
#8zC/u\`=  
import org.rut.util.algorithm.SortUtil; (,KzyR=*'  
e?FQ6?  
/** oW^>J-  
* @author treeroot +\$c_9|C+  
* @since 2006-2-2 X *EseC  
* @version 1.0 *,t/IA|  
*/ AN3oh1xe:  
public class SelectionSort implements SortUtil.Sort { z?pi /`y8>  
8 Vf #t!t  
/* i[I&m]N  
* (non-Javadoc) Ve${g`7&  
* a,(nf1@5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TO.STK`  
*/ #%w+PL:*O  
public void sort(int[] data) { maeQ'Sv_&  
int temp; oY0*2~sg  
for (int i = 0; i < data.length; i++) { t2Jf+t_B7  
int lowIndex = i; %!eRR  
for (int j = data.length - 1; j > i; j--) { G|RBwl  
if (data[j] < data[lowIndex]) { =CO) Q2  
lowIndex = j; B!&y>Z^$  
} K1o>>388G  
} r+h%a~A#>  
SortUtil.swap(data,i,lowIndex); Xu E' %;:  
} g9CedD%40  
} C#e :_e]  
QUaV;6 4  
} )Ly ~\*  
u80C>sQ  
Shell排序: &*Xrh7K2e  
d2d8,Vg  
package org.rut.util.algorithm.support; nCQ".G  
`\|tXl.  
import org.rut.util.algorithm.SortUtil; [oXSjLQm[  
|?ZU8I^vW  
/** ycSGv4 )  
* @author treeroot Ijap%l1I  
* @since 2006-2-2 fj/L)i  
* @version 1.0 -2!S>P Zs  
*/  JZ+6)R  
public class ShellSort implements SortUtil.Sort{ VrLp5?Bh  
zA}JVB  
/* (non-Javadoc) _iCrQJ0"T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m5&Ht (I%n  
*/ X)6G :cD  
public void sort(int[] data) { > ;#Y0  
for(int i=data.length/2;i>2;i/=2){ H-nhq-fut  
for(int j=0;j insertSort(data,j,i); a6cU<(WDeh  
} .dVV# H  
} g],]l'7H  
insertSort(data,0,1); $STGH  
} cJbv,RV<  
tQRbNY#}Z  
/** ij#v_~g3  
* @param data _KKux3a  
* @param j F(zCvT   
* @param i ju3@F8AI  
*/ :*BN>*1^\r  
private void insertSort(int[] data, int start, int inc) { :3XvHL0rx  
int temp; _'1 7C /  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lZ)6d-vK  
} F_g(}wE# q  
} \y%"tJ~N{  
} he/rt#  
G[]%1 _QCO  
} r]&sXKDc  
@ *~yVV!5  
快速排序: A,tg268  
J[r_ag  
package org.rut.util.algorithm.support; l)o!&]2  
1LSJy*yY  
import org.rut.util.algorithm.SortUtil; xb%Q[V_m  
7w" !"W#  
/** vea{o 35!  
* @author treeroot lR7;{zlSf'  
* @since 2006-2-2 Y:\]d1C  
* @version 1.0 O`1!&XT{x  
*/ 5._QI/d)'J  
public class QuickSort implements SortUtil.Sort{ 7O k-T10  
0TA8#c  
/* (non-Javadoc) ky]^N)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,/GFD[SQ  
*/ 5Za<]qxr  
public void sort(int[] data) { >yLDU_P)  
quickSort(data,0,data.length-1); rir,|y,  
} $xdo=4;|  
private void quickSort(int[] data,int i,int j){ pfIK9>i  
int pivotIndex=(i+j)/2; xzOvc<u  
file://swap A'7Y{oPHX  
SortUtil.swap(data,pivotIndex,j); $H.U ~  
WRkuPj2  
int k=partition(data,i-1,j,data[j]); W( sit;O  
SortUtil.swap(data,k,j); :h(3Ep  
if((k-i)>1) quickSort(data,i,k-1); B Tj1C  
if((j-k)>1) quickSort(data,k+1,j); H_3Wx fO  
W`JI/  
} 1 oKY7i$  
/** &&52ji<3  
* @param data h$$JXf  
* @param i R[6R)#o  
* @param j r}e(MT:R'  
* @return Q?LzL(OioN  
*/ 7VZ^J`3  
private int partition(int[] data, int l, int r,int pivot) { Z.Z31yF:f  
do{ +mD;\iW]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~,};FI  
SortUtil.swap(data,l,r); yK"\~t[@X:  
} Qi dI  
while(l SortUtil.swap(data,l,r); w5s&Ws  
return l; w5)KWeGa  
} "N_@q2zF  
/O$~)2^h  
} Q.7X3A8  
z1,#ma}.  
改进后的快速排序: m(:R(K(je  
S1)g\Lv  
package org.rut.util.algorithm.support; MIl\Bn  
bA Yp }  
import org.rut.util.algorithm.SortUtil; NX(IX6^y  
SeS ZMv  
/** *c/|/  
* @author treeroot %rnRy<9  
* @since 2006-2-2 YqXN|&  
* @version 1.0 }j1;0kb?  
*/ W7~_XI  
public class ImprovedQuickSort implements SortUtil.Sort { <3tf(?*,k]  
SJO*g&duQ  
private static int MAX_STACK_SIZE=4096; z=>PjIW  
private static int THRESHOLD=10; >k@{NP2b  
/* (non-Javadoc) C" `\[F`.k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) il{x?#Wrb  
*/ /8`9SS  
public void sort(int[] data) { @>~S$nw/  
int[] stack=new int[MAX_STACK_SIZE]; UHi^7jQ  
P| ?nx"c  
int top=-1; qFDy)4H)  
int pivot; #')] ~Xa  
int pivotIndex,l,r; U v>^ Z2  
! @Vj&>mH$  
stack[++top]=0; w^HI lA  
stack[++top]=data.length-1; bOrE86v:  
yGWl8\,j0  
while(top>0){ s5{H15  
int j=stack[top--]; Fd80T6[  
int i=stack[top--]; Bs`='w%7  
oz:J.<j24Z  
pivotIndex=(i+j)/2; d3?gh[$  
pivot=data[pivotIndex]; :mCGY9d4L  
+|+fDQI  
SortUtil.swap(data,pivotIndex,j); 0L"uU3  
yJqDB$0  
file://partition :18}$  
l=i-1; hZUS#75M5  
r=j; jL4"FTcE]3  
do{ RN1KM  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); hhylsm  
SortUtil.swap(data,l,r); =8p[ (<F=  
} "Ya ;&F.'  
while(l SortUtil.swap(data,l,r); rc%*g3ryLG  
SortUtil.swap(data,l,j); u|EJ)dT?  
4U)%JK.ta  
if((l-i)>THRESHOLD){ $1)NYsSH/H  
stack[++top]=i; Sqmjf@o$>  
stack[++top]=l-1; Y%]g,mG  
} 6~s{HI!  
if((j-l)>THRESHOLD){ c(?OE' "Z  
stack[++top]=l+1; ?&1%&?cg9  
stack[++top]=j; aG@GJ@w  
} >/@Q7V99{  
WYCDEoqU2  
} D,-L!P  
file://new InsertSort().sort(data); ;tD?a7  
insertSort(data); r`u 9MJ*  
} ! c~3`7v  
/** Z,XivU&  
* @param data FEa%wS{  
*/ Mwj7*pxUh  
private void insertSort(int[] data) { {Y]3t9!\  
int temp; N;m62N  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p<@+0Uw2  
} GBd mT-7  
} &w%%^ +n |  
} Pm24;'  
J(XK%e[8  
} nu|odP  
b%X}{/n  
归并排序: }_Sgor83n  
i~HS"n  
package org.rut.util.algorithm.support; mUb2U&6(  
1 EV0Y]T1  
import org.rut.util.algorithm.SortUtil; Dp@m"_1`+  
a5@lWpQsV  
/** 9x8Ai  
* @author treeroot | 8n,|%e  
* @since 2006-2-2 yAel4b/}  
* @version 1.0 1&kf2\S  
*/ tE=$#  
public class MergeSort implements SortUtil.Sort{ 6X VJ/qZ  
u`*$EP-%  
/* (non-Javadoc) c/3]M>+M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @(tuE  
*/ <("P5@cExU  
public void sort(int[] data) { oX/#Mct{s  
int[] temp=new int[data.length]; ju"j?2+F  
mergeSort(data,temp,0,data.length-1); \WVY@eB  
} !-gOqo  
ux7g%Q ^"  
private void mergeSort(int[] data,int[] temp,int l,int r){ Qm?o^%a  
int mid=(l+r)/2; } /Iw]!lK2  
if(l==r) return ; mP)im]H  
mergeSort(data,temp,l,mid); o`ODz[04  
mergeSort(data,temp,mid+1,r); bqR0./V  
for(int i=l;i<=r;i++){ y=}a55:qE  
temp=data; mO\=# Q>  
} a>nV!b\n5  
int i1=l; 9>5]y}.{  
int i2=mid+1; E|B1h!!\c  
for(int cur=l;cur<=r;cur++){ 'BEM:1)  
if(i1==mid+1) YjG:ECj}  
data[cur]=temp[i2++]; T=cb:PD{%  
else if(i2>r) nQ'AB~ Do  
data[cur]=temp[i1++]; !un_JZD  
else if(temp[i1] data[cur]=temp[i1++]; pC)S9Kl  
else hN:2(x  
data[cur]=temp[i2++]; j7Lw( AJ  
} f^XfIH_#  
} eJ$ {`&J  
B;L^!sLP  
} 2) A$bx  
ds QGj&  
改进后的归并排序: g\,HiKBXd  
v*e=oyx[  
package org.rut.util.algorithm.support; LZ~$=<  
&$NVEmW-J  
import org.rut.util.algorithm.SortUtil; AyZBH &}RZ  
~48mCD  
/** TqMy">>  
* @author treeroot 4dvuw{NZ  
* @since 2006-2-2 V6 ,59  
* @version 1.0 )'?@raB!  
*/ u:4?$%rB  
public class ImprovedMergeSort implements SortUtil.Sort { PR1%  
j,JGs[A  
private static final int THRESHOLD = 10; nF| m*_DW  
C[(Exe  
/* `L}Irt}  
* (non-Javadoc) N+ R/ti  
* 6~Xe$fP(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?x &"EhA>  
*/ \LW '6 pQ_  
public void sort(int[] data) { [kq+a] q  
int[] temp=new int[data.length]; uH!;4@ uI  
mergeSort(data,temp,0,data.length-1); ma26|N5  
} ag$UNV  
lV!@h}mG  
private void mergeSort(int[] data, int[] temp, int l, int r) { %!1:BQ,p,i  
int i, j, k; %S4pkFR  
int mid = (l + r) / 2; -T-h~5   
if (l == r) CpICb9w  
return; )<jT;cT!&  
if ((mid - l) >= THRESHOLD) $PNIuC?=  
mergeSort(data, temp, l, mid);  kQm\;[R  
else :ITz\m  
insertSort(data, l, mid - l + 1); <)(STo  
if ((r - mid) > THRESHOLD) xlaBOKa%  
mergeSort(data, temp, mid + 1, r); wXsA-H/`  
else X\1'd,V  
insertSort(data, mid + 1, r - mid);  i'9  
iPJZ%  
for (i = l; i <= mid; i++) { 8[;U|SR"  
temp = data; -xf=dzm)  
} G%K<YyAP  
for (j = 1; j <= r - mid; j++) { } Pc6_#  
temp[r - j + 1] = data[j + mid]; &wZ:$lK#o  
} p,9eZUGy  
int a = temp[l];  G l*C"V  
int b = temp[r]; "I]% aK0  
for (i = l, j = r, k = l; k <= r; k++) { yeNC-U<  
if (a < b) { %k3a34P@  
data[k] = temp[i++]; X/nb7_M  
a = temp; Em R#)c~(W  
} else { `W[oLQ  
data[k] = temp[j--]; Y&5h_3K;<  
b = temp[j]; ;wz YZ5=Di  
} c;bp[ Y3R  
} N|h}'p  
} ZUMzWK5Th  
o^},L?  
/** "ND 7,rQ  
* @param data E-i rB/0  
* @param l vV| u+v{  
* @param i z>hG'  
*/ h^bbU.  
private void insertSort(int[] data, int start, int len) { U:xr['  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ' 7>V4\"  
} P{)eZINlE  
} *Oo2rk nQ  
} 7{X I^I:n  
} -q\1Tlc]3  
4>>d "<}C  
堆排序: O&irgc!  
dd>stp   
package org.rut.util.algorithm.support; jO$3>q  
Y9 , KOs  
import org.rut.util.algorithm.SortUtil; FbHk6(/)  
? S>"yAoe  
/** i%0Ml:Y  
* @author treeroot 'zZN]P  
* @since 2006-2-2 +X0?bVT  
* @version 1.0 Yt7R[|  
*/ m> ?OjA!  
public class HeapSort implements SortUtil.Sort{ m Fwx},dl  
*9((b;Ju  
/* (non-Javadoc) a%sr*`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^6|Q$]}Ok  
*/ e&E""ye  
public void sort(int[] data) { \:\rkc9LI  
MaxHeap h=new MaxHeap(); gz-}nCSi  
h.init(data); .T/\5_Bx  
for(int i=0;i h.remove(); zVYX#- nv  
System.arraycopy(h.queue,1,data,0,data.length); c Q|nL  
} sV'(y>PP%  
:}v&TQ  
private static class MaxHeap{ ^c!"*L0E  
+glT5sOk  
void init(int[] data){ G0|j3y9$  
this.queue=new int[data.length+1]; _1 f!9ghT\  
for(int i=0;i queue[++size]=data; 6+e@)[l.zc  
fixUp(size); ksT2_Ic  
} N)03{$WM  
} iZB?5|*  
k/?5Fs!#  
private int size=0; tpO%)*  
0p :FAvvNI  
private int[] queue; p@y?xZS  
c%yhODq/  
public int get() { D|@*HX@_Xp  
return queue[1]; iVLfAN @  
} <T+)~&g$  
o nt8q8  
public void remove() { [nB[]j<R*  
SortUtil.swap(queue,1,size--); |T atRB3>  
fixDown(1); d:.S]OI0  
} U6e 0{n  
file://fixdown UmcPpZ  
private void fixDown(int k) { bf|s=,D  
int j; +] >o@  
while ((j = k << 1) <= size) { K>hQls+  
if (j < size %26amp;%26amp; queue[j] j++; oW3j|V  
if (queue[k]>queue[j]) file://不用交换 z^j7wMQ  
break; _ ]@   
SortUtil.swap(queue,j,k); @9lV~,,U  
k = j; kAA1+rG  
} (`\ DDJ[  
} ^pruQp1X  
private void fixUp(int k) { S=B?bD_,c  
while (k > 1) { 3DRJl, v  
int j = k >> 1; Ybo:2e  
if (queue[j]>queue[k]) /N .xh  
break; GdHFgxI  
SortUtil.swap(queue,j,k); q#B=PZ'NA  
k = j; P0VXHE1p  
} i x2V?\  
} Wu3or"lcw*  
g<pr(7jO  
} p5`iq~e9  
[qbZp1s|(  
} yuIy?K  
Cw6\'p%l-\  
SortUtil: 0M=A,`qk  
(iQ< [3C=  
package org.rut.util.algorithm; >G7dw1;  
E/[>#%@i  
import org.rut.util.algorithm.support.BubbleSort; q@k/"ee*?  
import org.rut.util.algorithm.support.HeapSort; }z%fQbw  
import org.rut.util.algorithm.support.ImprovedMergeSort; tQ=3Oa[u  
import org.rut.util.algorithm.support.ImprovedQuickSort; )E9[=4+*C$  
import org.rut.util.algorithm.support.InsertSort; UMtnb:ek  
import org.rut.util.algorithm.support.MergeSort;  ac  
import org.rut.util.algorithm.support.QuickSort; 8J|2b; Vf  
import org.rut.util.algorithm.support.SelectionSort; Buc{dcL/  
import org.rut.util.algorithm.support.ShellSort; NULew]:5  
|i_+b@Lul  
/** _y:-_q  
* @author treeroot )Fk*'6  
* @since 2006-2-2 9o%k [n  
* @version 1.0 e1cqzhI=nA  
*/ HiAj3  
public class SortUtil { 7PTw'+{  
public final static int INSERT = 1; nv$>iJ^~H  
public final static int BUBBLE = 2; M3q%(!2  
public final static int SELECTION = 3; kU :ge  
public final static int SHELL = 4; tofX.oi+C$  
public final static int QUICK = 5; 4eVQO%&2  
public final static int IMPROVED_QUICK = 6; K0;caqE^  
public final static int MERGE = 7; g0({$2Q7R  
public final static int IMPROVED_MERGE = 8; <pA%|]  
public final static int HEAP = 9; "&Q sv-9t  
2{U5*\FhVX  
public static void sort(int[] data) { p>#sR4d>  
sort(data, IMPROVED_QUICK); Q1kZ+b&  
} (\8IgQ{  
private static String[] name={ pLYLHS`*  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |D*a"*1+A  
}; wrP3:!=  
>EE}P|=-  
private static Sort[] impl=new Sort[]{ M./1.k&@  
new InsertSort(), qa-%j+  
new BubbleSort(), \ -n&z;`  
new SelectionSort(), z }3` 9  
new ShellSort(), _uXb 9  
new QuickSort(), Cb4.N 8  
new ImprovedQuickSort(), \/XU v(  
new MergeSort(), %f)%FN . S  
new ImprovedMergeSort(), J:Mn 5hdK=  
new HeapSort() >c`r&W.t  
}; h2jrO9  
M!i["($_  
public static String toString(int algorithm){ Z.}Z2K  
return name[algorithm-1]; "+XF'ZO  
} kz0pX- @b  
-HwqR Y s  
public static void sort(int[] data, int algorithm) { y^0 mf|  
impl[algorithm-1].sort(data); gQQve{'  
} \jmT#Gt`9  
?,}:)oA_  
public static interface Sort { inHlL  
public void sort(int[] data); vzX%x ul  
} &s#OiF8  
mUan(iJ  
public static void swap(int[] data, int i, int j) { D :)HK D.  
int temp = data; FPb4VJ|xm  
data = data[j]; lvOM1I  
data[j] = temp;  "tT68  
} cqYMzS t  
} ^O.` P  
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