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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。 #Y'eS'lv4  
插入排序: dbI>\khI  
)t6]F6!_  
package org.rut.util.algorithm.support; ,YYEn^:>  
w5@ 5"M  
import org.rut.util.algorithm.SortUtil; .iXN~*+g  
/** z/@_?01T=  
* @author treeroot }A#IBqf5  
* @since 2006-2-2 7]ieBUf S  
* @version 1.0 0> f!S` *  
*/ h9vcN#22D  
public class InsertSort implements SortUtil.Sort{ K7 e~%mY  
[a=exK  
/* (non-Javadoc) iI3:<j l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %opBJ   
*/ xoaO=7\io  
public void sort(int[] data) { +$2{u_m,  
int temp; f6Qr0Op  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZN[<=w&(cB  
} \br!77  
} Ey6R/M)?:y  
} p>6`jr  
bO '\QtW9  
} V%Uj\cv  
2MkrVQQ9g  
冒泡排序: l$42MRi/  
"M I';6  
package org.rut.util.algorithm.support; 'h>uR|  
|V9[a a*c  
import org.rut.util.algorithm.SortUtil; d*(aue=  
$TQhr#C]  
/** &!!*xv-z  
* @author treeroot LQ+/|_(.  
* @since 2006-2-2 ?jx]%n fV  
* @version 1.0 B9v>="F  
*/ T1LYJ]5  
public class BubbleSort implements SortUtil.Sort{ F:{*4b  
HU3:6R&  
/* (non-Javadoc) +7Ws`qhEe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5!-TLwl`j\  
*/ g: i5%1  
public void sort(int[] data) { Oy6fl'FIt  
int temp; n3^(y"q  
for(int i=0;i for(int j=data.length-1;j>i;j--){ b}e1JPk}!  
if(data[j] SortUtil.swap(data,j,j-1); jHLs 5%  
} R4?>C-;  
} $a(-r-_Fi]  
} Zk3Pv0c  
} sZ;|NAx)  
D6 B-#u!M  
} E$8JrL  
mx c)Wm<4  
选择排序: D3pz69W  
kfy!T rf  
package org.rut.util.algorithm.support; 6Q.S  
.l}Ap7@  
import org.rut.util.algorithm.SortUtil; H4/wO  
@AyteHK  
/** \Mf>X\}  
* @author treeroot PEMkx"h +  
* @since 2006-2-2 YQVo7"`%  
* @version 1.0 G6SgVaM  
*/ )rc!irac]  
public class SelectionSort implements SortUtil.Sort { ?gH[la  
tUn >=>cWP  
/* Q eeV<  
* (non-Javadoc) "wUIsuG/p  
* 7"(!]+BW!O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TBlSZZ-55]  
*/ k,h602(  
public void sort(int[] data) { rb*|0ST  
int temp; te_2"Z  
for (int i = 0; i < data.length; i++) { VPLf(  
int lowIndex = i; @]\fO)\f  
for (int j = data.length - 1; j > i; j--) { [&x9<f6  
if (data[j] < data[lowIndex]) { `lhw*{3A  
lowIndex = j; AGBV7Kk  
} G0FzXtu)q  
} %mI0*YRma  
SortUtil.swap(data,i,lowIndex); 2YD\KXDo  
} i FI74COam  
} #]#9Xq  
t],a1I.gk  
} <_?zln:4.  
j,IRUx13f  
Shell排序: ( ?FH`<  
Hv,|XE@Y  
package org.rut.util.algorithm.support; LoF/45|-<  
^r}c&@  
import org.rut.util.algorithm.SortUtil; ?R`S-  
ggso9ZlLu+  
/** {X{R]  
* @author treeroot C.j+Zb1Z(  
* @since 2006-2-2 KE?t?p  
* @version 1.0 ,'L>:pF3  
*/ $8EEtr,!  
public class ShellSort implements SortUtil.Sort{ @"w4R6l+*  
CH++3i2&  
/* (non-Javadoc) Vk5Z[w a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C@M-_Ud>Q  
*/ 8%rD/b6`  
public void sort(int[] data) { ,67Q!/O  
for(int i=data.length/2;i>2;i/=2){ A40DbD\^ad  
for(int j=0;j insertSort(data,j,i); >e]g T  
} o3WOp80hz  
} ChBf:`e  
insertSort(data,0,1); >P6"-x,["  
} oFk2y^>u  
a~o <>H  
/** XF`2*:7  
* @param data P^Hgm  
* @param j h]7_ N,  
* @param i c:Ua\$)u3,  
*/ h>Kx  
private void insertSort(int[] data, int start, int inc) { ,EqQU|  
int temp; *v<f#hB"  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); kk4 |4  
} !$I~3_c  
} sz7*x{E  
} kc'$4 J4Tw  
! j~wAdHk  
} DP_b9o \5  
L!f~Am:#  
快速排序: vHaM yA-  
Bfb~<rs[  
package org.rut.util.algorithm.support; nz 10/nw  
R'c*CLaiE  
import org.rut.util.algorithm.SortUtil; q~{) {t;  
%G?@Hye3  
/** *)^6'4=  
* @author treeroot Y,L`WeQY.  
* @since 2006-2-2 4P{|H  
* @version 1.0 c~|(j \FI  
*/ !Vpi1N\  
public class QuickSort implements SortUtil.Sort{ ;`AB-  
U32$ 9"  
/* (non-Javadoc) 7H H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "&(/bdah?&  
*/ H4M=&"ll}  
public void sort(int[] data) { V 6}5^W  
quickSort(data,0,data.length-1); 4KPn V+h"b  
} O>`k@X@9/  
private void quickSort(int[] data,int i,int j){ (3e.q'  
int pivotIndex=(i+j)/2; 4:MvC^X~z  
file://swap rFzNdiY  
SortUtil.swap(data,pivotIndex,j); W]4Z4&  
Jv~R/qaaD  
int k=partition(data,i-1,j,data[j]); +%5L2/n7  
SortUtil.swap(data,k,j); <H64L*,5'7  
if((k-i)>1) quickSort(data,i,k-1); aIgexi,  
if((j-k)>1) quickSort(data,k+1,j); =%_=!%  
0nc(2Bi  
} &YFe"C  
/** >N&{DJmD  
* @param data #N{]  
* @param i A %w9Da?B  
* @param j fECV\Z  
* @return _z p<en[  
*/ =7!s8D,[  
private int partition(int[] data, int l, int r,int pivot) { rfV'EjiM}  
do{ (Jp~=6&lKf  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y7G sL7I  
SortUtil.swap(data,l,r); py6<QoGV  
} YNr5*P1  
while(l SortUtil.swap(data,l,r); N:G]wsh  
return l; ?mMM{{%(.  
} Xj, %t}  
We6eAP/Z  
} [^!SkQ  
:.PA(97x b  
改进后的快速排序: |v+z*}fKw  
9J:|"@)N  
package org.rut.util.algorithm.support; l|q-kRRjn  
AA\)BNM  
import org.rut.util.algorithm.SortUtil; t 7Y*/v&P(  
F .S^KK  
/** F:/x7]7??Z  
* @author treeroot ?NBae\6r  
* @since 2006-2-2 Z+B*V )a=  
* @version 1.0 %9YY \a {  
*/ "#)|WVa=BM  
public class ImprovedQuickSort implements SortUtil.Sort { Kp7D I0~  
Kebr>t8^  
private static int MAX_STACK_SIZE=4096; %g :Q?   
private static int THRESHOLD=10; c5p,~z_Dtu  
/* (non-Javadoc) (]w6q&,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tE %g)hL-  
*/ W"=l@}I  
public void sort(int[] data) { \Zf=A[  
int[] stack=new int[MAX_STACK_SIZE]; Byq VNz0L  
QC'Ru'8S  
int top=-1; =A!oLe$%  
int pivot; /? %V% n  
int pivotIndex,l,r; 9L$OSy|  
tR51Pw  
stack[++top]=0; GR|\OJ<2  
stack[++top]=data.length-1; P!-RZEt$  
2l?^\9&  
while(top>0){ iM!Ya!  
int j=stack[top--]; b}TvQ+W]2  
int i=stack[top--]; v4e4,Nt  
 Z 9:  
pivotIndex=(i+j)/2; s.4+5rE  
pivot=data[pivotIndex]; E6 oC^,ZRy  
L#S W!  
SortUtil.swap(data,pivotIndex,j); +'8a>K^  
cr;:5D%_  
file://partition a&{Y~Og?%  
l=i-1; ZH~bY2^;  
r=j; BP..p ^EPN  
do{ k'r}@-X  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); yeyDB>#Va.  
SortUtil.swap(data,l,r); h: yJ  
} aV5M}:D  
while(l SortUtil.swap(data,l,r); a~Dk@>+P>  
SortUtil.swap(data,l,j); \MEBQ  
et5lfj  
if((l-i)>THRESHOLD){ .I_atv  
stack[++top]=i; bci]"uzB  
stack[++top]=l-1; <M\&zHv  
} =r+K2]z,L  
if((j-l)>THRESHOLD){ x8aOXN#w}  
stack[++top]=l+1; LZ wCe$1  
stack[++top]=j; yH('Vl  
} wa<k%_# M  
3qTr|8`s  
} 6y!U68L;B  
file://new InsertSort().sort(data); ~!ooIwNNz  
insertSort(data); Jqb~RP~  
} ,>aa2  
/** D?#l8  
* @param data +a39 !j 1_  
*/ gcnX^[`S  
private void insertSort(int[] data) { * WV=Xp  
int temp; /"J 6``MV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NCh-BinK@  
} ;8oe-xS\+  
} ' pgP QM<  
} ZBDF>u@  
t+ w{uwEY  
} a X1b(h2  
u<8b5An;  
归并排序: Mf14> `<`  
wU|@fm"  
package org.rut.util.algorithm.support; #czTX%+9(e  
-i?gY F!G  
import org.rut.util.algorithm.SortUtil; L ~'98C  
6 D Xja_lp  
/** @%fTdneH  
* @author treeroot bN-!&Td  
* @since 2006-2-2 mhVLlb Y|t  
* @version 1.0 : %& E58  
*/ EMP|I^  
public class MergeSort implements SortUtil.Sort{ uD@ ZM  
FD[*Q2fU  
/* (non-Javadoc) O*v&C Hd3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6yy%_+k*  
*/ .v(GVkE}  
public void sort(int[] data) { >3p~>;9sc  
int[] temp=new int[data.length]; :!MEBqcU  
mergeSort(data,temp,0,data.length-1); {U2AAQSa  
} HL&HY)W1gf  
T/E=?kBR  
private void mergeSort(int[] data,int[] temp,int l,int r){ T#Q7L~?zY  
int mid=(l+r)/2; <oJ?J^  
if(l==r) return ; Zb 2pZhkW  
mergeSort(data,temp,l,mid); $ (;:4  
mergeSort(data,temp,mid+1,r); $M)SsD~  
for(int i=l;i<=r;i++){ ef^GJTv&k  
temp=data; pMT7/y-  
} QL8C!&=  
int i1=l; 7Tk//By7  
int i2=mid+1; kJmwR  
for(int cur=l;cur<=r;cur++){ fD@d.8nXd  
if(i1==mid+1) Xr=BxBttp  
data[cur]=temp[i2++]; F(n<:TvlK  
else if(i2>r) ;U>nj],uv  
data[cur]=temp[i1++]; IQU1 JVk Z  
else if(temp[i1] data[cur]=temp[i1++]; CPZ,sWg5  
else Xuu&`U~%  
data[cur]=temp[i2++]; . .5~ x~O  
} Hk;;+'-  
} W6T4Zsg  
KO=$Hr?f;  
} G+N1#0,q  
1iY4|j;ahV  
改进后的归并排序: ~\(c;J*Ir  
[ne51F5_  
package org.rut.util.algorithm.support; }0pp"[JU  
j7ZxA*  
import org.rut.util.algorithm.SortUtil; _|US`,kfc  
5H.~pc2y  
/** +Kb 7N, "  
* @author treeroot xh:I]('R  
* @since 2006-2-2 R/x3+_.f  
* @version 1.0 h#Z[ "BG  
*/ {Vj&i.2,  
public class ImprovedMergeSort implements SortUtil.Sort { OGg\VV'  
F/ZFO5C%  
private static final int THRESHOLD = 10; |P]W#~Y-  
V K6D  
/* we[+6Z6J  
* (non-Javadoc) D(ItNMc Ku  
* =s":Mx,o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rlR!Tc>  
*/ Fc@R,9  
public void sort(int[] data) { "'bl)^+?,  
int[] temp=new int[data.length]; YA,~qT|  
mergeSort(data,temp,0,data.length-1); 3as=EYm  
} d eT<)'"  
nrMW5>&-`  
private void mergeSort(int[] data, int[] temp, int l, int r) { > )< ?  
int i, j, k; }P?e31@:  
int mid = (l + r) / 2; 0&s a#g2  
if (l == r) SbGdcCB  
return; yn}Dj9(q  
if ((mid - l) >= THRESHOLD) H;4QuB'^  
mergeSort(data, temp, l, mid); ,B'=$PO%  
else }},0#Ap  
insertSort(data, l, mid - l + 1); ?D.+D(  
if ((r - mid) > THRESHOLD) _M/N_Fm  
mergeSort(data, temp, mid + 1, r); #?w07/~L  
else =_#b .8K  
insertSort(data, mid + 1, r - mid); $,@}%NlHc  
g_cED15  
for (i = l; i <= mid; i++) { x3&gB`j-  
temp = data; GGEM&0*  
} iGhvQmd(/*  
for (j = 1; j <= r - mid; j++) { qZ^ PC-  
temp[r - j + 1] = data[j + mid]; 0\:= KIY.  
} x7/Vf,N  
int a = temp[l]; ]Z5m_-I  
int b = temp[r]; R?iCJ5m  
for (i = l, j = r, k = l; k <= r; k++) { Cg]|x+  
if (a < b) { KV$&qM.  
data[k] = temp[i++]; 6=]Gom&S  
a = temp; Q~nVbj?c2v  
} else { ':pDlUA  
data[k] = temp[j--]; ns>$  
b = temp[j]; A .&c>{B7  
} RJ@79L *#  
} ?)-6~p 4N  
} Mc.{I"c@  
|gI>Sp%Fu  
/** pFS@yHs  
* @param data **%&|9He  
* @param l $x'jf?zs!  
* @param i pL1ABvBB  
*/ BS fmS(.  
private void insertSort(int[] data, int start, int len) { rQ{|0+l  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zA9q`ePS  
} 4,LS08&gh  
}  Kg';[G\  
} l%2VA  
} Kj4BVs  
7FoX)54"  
堆排序: Y:;_R=M  
9SsVJ<9,R  
package org.rut.util.algorithm.support; `{!A1xKZ  
Hi={(Z5tC4  
import org.rut.util.algorithm.SortUtil; SX"|~Pi(  
uX_#NP/2  
/** cEu_p2(7!B  
* @author treeroot B1_9l3RM  
* @since 2006-2-2 g ZtQtFi  
* @version 1.0 Ob]\t/:%P  
*/ b5)^g+8)w  
public class HeapSort implements SortUtil.Sort{ Q,5PscE6&k  
 _C5i\Y)  
/* (non-Javadoc) \)/qCeiZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e#Ao] gc  
*/ jdG2u p  
public void sort(int[] data) { <&b,%O  
MaxHeap h=new MaxHeap(); G,!jP2S  
h.init(data); ^slIR!L  
for(int i=0;i h.remove(); LSc^3=X  
System.arraycopy(h.queue,1,data,0,data.length); 8_!qoW@B  
} ,nYa+e  
?I^$35  
private static class MaxHeap{ h@R n)D  
0]7jb_n1  
void init(int[] data){ 6Sd:5eTEQ  
this.queue=new int[data.length+1]; M,JwoKyg  
for(int i=0;i queue[++size]=data; }PK4 KRn  
fixUp(size); K*j OrQf`  
} o4p5`jOG@  
} [Ix6ArY  
f?. VVlD  
private int size=0; )8oyo~4?  
.t\J @?Z  
private int[] queue; L;opQ~g  
ra*|HcLD  
public int get() { 6<W^T9}v@/  
return queue[1]; h>!h|Ma  
} &6CDIxH{  
A[m?^vk q  
public void remove() { YaS!YrpI  
SortUtil.swap(queue,1,size--); Ne+Rs+~4  
fixDown(1); #d %v=.1  
} OE(y$+L3_I  
file://fixdown D Z*c.|W  
private void fixDown(int k) { /E<Q_/'Z  
int j; 9e`};DE   
while ((j = k << 1) <= size) { ,]0BmlD  
if (j < size %26amp;%26amp; queue[j] j++; <fHHrmZ#/.  
if (queue[k]>queue[j]) file://不用交换 T%%EWa<a  
break;  P s>Y]  
SortUtil.swap(queue,j,k);  dHx4yFS  
k = j; [xM&Jdf8  
} ,M`1 k  
} uq]=L  
private void fixUp(int k) { Q<6* UUQm  
while (k > 1) { +ZjDTTk  
int j = k >> 1; 25Z} .))  
if (queue[j]>queue[k]) W]Xwt'ABz  
break; T4:H:  
SortUtil.swap(queue,j,k); MMrN#&r  
k = j; @Pc7$qD%  
} GjwH C{  
} $MDmY4\  
GCYXDovh  
} |e#W;q$v  
^!^M Gzu  
} -sv%A7i  
r jn:E  
SortUtil: *^@b0f~vj  
>uZc#Zt  
package org.rut.util.algorithm; k 76<CX  
CP9Q|'oJ  
import org.rut.util.algorithm.support.BubbleSort; u^SInanw  
import org.rut.util.algorithm.support.HeapSort; C1f$^N  
import org.rut.util.algorithm.support.ImprovedMergeSort; W3/] 2"0  
import org.rut.util.algorithm.support.ImprovedQuickSort; ]+,L/P  
import org.rut.util.algorithm.support.InsertSort; U0 -RG  
import org.rut.util.algorithm.support.MergeSort; . h)VR 5?j  
import org.rut.util.algorithm.support.QuickSort; mQVlE__ub  
import org.rut.util.algorithm.support.SelectionSort; ,1 H|{<  
import org.rut.util.algorithm.support.ShellSort; 1ik.|T<f0  
/ :.I&^>P  
/** >{Ayzz>v  
* @author treeroot }~LGq.H  
* @since 2006-2-2 N}/V2K]Q  
* @version 1.0 +vJ}'uR3P  
*/ g \S6>LG!  
public class SortUtil { TXYO{  
public final static int INSERT = 1; z4D)Xy"/  
public final static int BUBBLE = 2; 'J*'{  
public final static int SELECTION = 3; q<.k:v&  
public final static int SHELL = 4; U^[AW$WzU  
public final static int QUICK = 5; i;~.kgtq4  
public final static int IMPROVED_QUICK = 6; :-59~8&  
public final static int MERGE = 7; W"s/ 8;  
public final static int IMPROVED_MERGE = 8; nT:<_'!  
public final static int HEAP = 9; p&\QkI=  
pFMJG<W9,  
public static void sort(int[] data) { OD[=fR|cp  
sort(data, IMPROVED_QUICK); U&(gNuR>J  
} :s+?"'DP  
private static String[] name={ k {{eyC  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ._p2"<  
}; IIMf\JdM  
< (9 BO&  
private static Sort[] impl=new Sort[]{ %ho?KU2j  
new InsertSort(), LR.]&(kyd  
new BubbleSort(), !_+FuF"@  
new SelectionSort(), _)pOkS  
new ShellSort(), *eXs7"H  
new QuickSort(), OSuQ7V  
new ImprovedQuickSort(), KgYQxEbIW  
new MergeSort(), IX 6 jb"  
new ImprovedMergeSort(), }Uj-R3]}K  
new HeapSort() CEkf0%YJ  
}; p);[;S  
d\Up6F  
public static String toString(int algorithm){ <}&J|()  
return name[algorithm-1]; !b0A %1W;  
} yo_zc<  
J s33S)  
public static void sort(int[] data, int algorithm) { i0\]^F  
impl[algorithm-1].sort(data); #(}{*d R  
} FDF DB  
x/]G"?Uix  
public static interface Sort { 6E ^m*la%  
public void sort(int[] data); c'?EI EP  
} "<egm^Yq  
RI'}C`%v  
public static void swap(int[] data, int i, int j) { Z8h;3Ek  
int temp = data; I^LU*A=  
data = data[j]; V`/c#y||  
data[j] = temp; ,,j >2Ts  
} /w6'tut  
} Xeja\5zB  
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