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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。 gP_d >p:b  
插入排序: SjNwT[.nr7  
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package org.rut.util.algorithm.support; W0r5D9k  
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import org.rut.util.algorithm.SortUtil; ! A ydhe  
/** 5e~{7{  
* @author treeroot #/ gme  
* @since 2006-2-2 )4o=t.O\K  
* @version 1.0 ,:Rq  
*/ 6lH>600]u  
public class InsertSort implements SortUtil.Sort{ @Tm0T7C  
EssUyF-jwU  
/* (non-Javadoc) -$!Pf$l@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Af! W K=  
*/ 7+2aG  
public void sort(int[] data) { *F4G qX3  
int temp; +XaO?F[c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);   _c7  
} kdueQ(\  
} s"^YW+HMb  
} (/rIodHJO  
3 v,ae7$U&  
} F" #3s=  
ju2X*  
冒泡排序: L^ jC& dF  
YQ[&h  
package org.rut.util.algorithm.support; 9Av- ;!]  
5IF~]5s  
import org.rut.util.algorithm.SortUtil; BX)cV  
W~@GK  
/**  M$-(4 0  
* @author treeroot yKk,);  
* @since 2006-2-2 G4`sRaT.  
* @version 1.0 B #V 4  
*/ m#}{"d&J  
public class BubbleSort implements SortUtil.Sort{ GT`<jzAiQ  
0T{Y_IG  
/* (non-Javadoc) =jd=Qs IL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pa> 2JF*  
*/ 1_E3DXe  
public void sort(int[] data) { :92a34  
int temp; ~4 xBa:*z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Tk@g9\6O9  
if(data[j] SortUtil.swap(data,j,j-1); {CyPcD'$s  
} -r2qIt  
} BKlc{=  
} :@4>}k*  
} . L6@Rs  
fm2Mi~}0  
} :aFpz6<  
+M%2m3.Jo  
选择排序: !v;_@iW3e  
h,jAtL!  
package org.rut.util.algorithm.support; }T*xT>p^3  
W;@ae,^  
import org.rut.util.algorithm.SortUtil; 8J(zWV7 r  
#di_V"  
/** ?~y(--.t;T  
* @author treeroot 2 n+XML  
* @since 2006-2-2 (/P&;?j  
* @version 1.0 Bc@r*zb  
*/ YV!V9   
public class SelectionSort implements SortUtil.Sort { oX]1>#5UMg  
|"E9DD]{  
/* L}S4Zz18  
* (non-Javadoc) ?kxWj(D  
* 2B?i2[a,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2]3Jb{8FI>  
*/ JGNxJ S<]  
public void sort(int[] data) { pxnUe1=  
int temp; WatLAn+  
for (int i = 0; i < data.length; i++) { 5 nIlG  
int lowIndex = i; g[+Q~/yq  
for (int j = data.length - 1; j > i; j--) { 4 AmF^H  
if (data[j] < data[lowIndex]) { -$|X\#R  
lowIndex = j; R3!vS+5rR  
} X|B;>q  
} Y/I6.K3  
SortUtil.swap(data,i,lowIndex); ^3s&90  
} `Q^Sm`R  
} B]}V$*$ \?  
M4PUJZ]  
} KcF+!;:  
Q3{&'|}^2  
Shell排序: !l~aRj-WZ  
/{)cI^9  
package org.rut.util.algorithm.support; Gv3Fg[MA@c  
/g7?,/vnZ  
import org.rut.util.algorithm.SortUtil; TFA  
]TprPU39  
/** P&`r87J  
* @author treeroot ~TR|Pv  
* @since 2006-2-2 {hP&P  
* @version 1.0 M{RZ-)IC  
*/ ? Z fhz   
public class ShellSort implements SortUtil.Sort{ 'm? x2$u8  
fhWD>;%F%  
/* (non-Javadoc) u`2k6.-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u9~J1s<e  
*/  y, _3Ks  
public void sort(int[] data) { G6bg ~V5Q:  
for(int i=data.length/2;i>2;i/=2){ V xs`w  
for(int j=0;j insertSort(data,j,i); ^b. MR?9  
} t"vO&+x  
} Z6@J-<u  
insertSort(data,0,1); ^TuEp$Z=  
} ]+7c1MB(5  
O +}EE^*a  
/** ]Wm ?<7H  
* @param data &nw ~gSe  
* @param j !T(Omve)  
* @param i YEoT_>A$dB  
*/ V *y  
private void insertSort(int[] data, int start, int inc) { ;7*@Gf}R  
int temp; M:f=JuAx  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C2i..iD  
} ~y^lNgujO  
} <&Xq`i/(  
} tX}S[jdq  
DA@hf  
} F;@&uXYgc  
l;kZS  
快速排序: U  {!{5l:  
^}\R]})w"  
package org.rut.util.algorithm.support; ; O0rt1  
PdBhX  
import org.rut.util.algorithm.SortUtil; L4Y3\4xXO  
dV  
/** =nZd"t'p|  
* @author treeroot CxQ,yd;>  
* @since 2006-2-2 Khd,|pM  
* @version 1.0  Bz~h-  
*/ J :(\o=5 5  
public class QuickSort implements SortUtil.Sort{ FWN%JCOj@  
N\&;R$[9:  
/* (non-Javadoc) ,^C;1ph  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W/Q%%)J  
*/ Ls*=mh~IY  
public void sort(int[] data) { 2=+ ,jX{  
quickSort(data,0,data.length-1); 4 Z)]Cq*3  
} XnOl*#P  
private void quickSort(int[] data,int i,int j){ U# B  
int pivotIndex=(i+j)/2; R/|{?:r?:x  
file://swap A@'W $p?5r  
SortUtil.swap(data,pivotIndex,j); E=trJge  
^uzVz1%mM  
int k=partition(data,i-1,j,data[j]); 1`\kXaG  
SortUtil.swap(data,k,j); 1zW6Pb  
if((k-i)>1) quickSort(data,i,k-1); 3s`3}DKK  
if((j-k)>1) quickSort(data,k+1,j); _S1uJ~j;E  
Tyl"N{ _  
} m/Z_HER^  
/** hh}EDnx  
* @param data NZP,hAUK,  
* @param i B[V=l<J  
* @param j _,~zy9{,  
* @return 3zHiu*2/!  
*/ fTgN2U  
private int partition(int[] data, int l, int r,int pivot) { 'YZs6rcJ  
do{ KIJ[ cIw  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Hm*#HT%#  
SortUtil.swap(data,l,r); ;d40:q<  
} ro@BmRMW  
while(l SortUtil.swap(data,l,r); c Zr4  
return l;  Z.JTq~`I  
} KZNyp%q  
SiT &p  
} Pc1N~?}.  
:[3\jLrc  
改进后的快速排序: V|7CYkB8  
4/|=0TC;  
package org.rut.util.algorithm.support; UMaKvr-C&  
KW<CU'  
import org.rut.util.algorithm.SortUtil; Um<vsR  
s'I$yJ)@2E  
/** rgY~8PY"  
* @author treeroot V.1sZYA9  
* @since 2006-2-2 FU3B;Fn^Z(  
* @version 1.0 p6)UR~9Rs  
*/ p<e~x/@m*  
public class ImprovedQuickSort implements SortUtil.Sort { A[bxxQSP\H  
%-CC_R|0$  
private static int MAX_STACK_SIZE=4096; dz 2d`=`3  
private static int THRESHOLD=10; oMbCljUC  
/* (non-Javadoc) jU$PO\UTk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y"ck;OQD  
*/ p3'+"sFU  
public void sort(int[] data) { &EOh}O<  
int[] stack=new int[MAX_STACK_SIZE]; Ui&$/%Z|  
X;NTz75  
int top=-1; %Z4=3?5B"9  
int pivot; ~T~v*'_h  
int pivotIndex,l,r; #v-!GK_<  
./'n2$^3  
stack[++top]=0; ?da3Azp  
stack[++top]=data.length-1; IpxjP\  
kZNZ?A<D  
while(top>0){ b&1@rE-  
int j=stack[top--]; r "R\  
int i=stack[top--]; D~:fn|/Brp  
s-B\8&^C  
pivotIndex=(i+j)/2; X c^~|%+  
pivot=data[pivotIndex]; 8h97~$7)  
Jk*MxlA.b  
SortUtil.swap(data,pivotIndex,j); 9':$!Eoq  
U9w*x/S wb  
file://partition Cn<x  
l=i-1; ?x97 q3I+]  
r=j; K~]jXo^M  
do{ NL 37Y{b  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `upNP/,  
SortUtil.swap(data,l,r); k s}o9[D3  
} \bfHGo=  
while(l SortUtil.swap(data,l,r); 5hAg*zJb5o  
SortUtil.swap(data,l,j); PR+!CFi&  
?x @khzk  
if((l-i)>THRESHOLD){ !MC W t  
stack[++top]=i; ]O."M"B  
stack[++top]=l-1; @w0[5ZAj  
} ( EX  
if((j-l)>THRESHOLD){ w3@ te\  
stack[++top]=l+1; zjmc>++<t  
stack[++top]=j; xcig'4L  
} v6:DA#0  
?6dtvz;K+?  
} k$UBZ,=iC  
file://new InsertSort().sort(data); CvN~  
insertSort(data); XHr{\/4V  
} :$j~;)2  
/** *u }):8=&R  
* @param data ^4"_I   
*/ mI# BQE`p6  
private void insertSort(int[] data) { EB#z\  
int temp; /Q!F/HY3ZS  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PewLg<?,G4  
} IjNm/${$  
} W5p}oN  
} =EKJ!{  
DQ)SMqOotw  
} oC [g  
|Xag:hof  
归并排序: \ *2IU"R  
$sJn: 8z  
package org.rut.util.algorithm.support; md0=6< }P  
!4E:IM63  
import org.rut.util.algorithm.SortUtil; }=U\v'%m  
{x8`gP\H  
/** g@Zc'g/XB  
* @author treeroot F,sT[C  
* @since 2006-2-2 _W;u Qg']  
* @version 1.0 ,"'agg:St  
*/ 6]Jv3Re'(I  
public class MergeSort implements SortUtil.Sort{ "#7i-?=  
O v-I2  
/* (non-Javadoc) 4g 1h:I/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3X:F9x>y  
*/ g=pDC+  
public void sort(int[] data) { /Yh8r1^2tZ  
int[] temp=new int[data.length]; 4Z_.Jdu w  
mergeSort(data,temp,0,data.length-1); >b?,zWiw  
} -4Xr5j%o  
 lcr=^  
private void mergeSort(int[] data,int[] temp,int l,int r){ #xc[)Y,W  
int mid=(l+r)/2; _VlN Z/V  
if(l==r) return ; bYtF#Y   
mergeSort(data,temp,l,mid); \o^+'4hq<5  
mergeSort(data,temp,mid+1,r); 9K49<u0O  
for(int i=l;i<=r;i++){ c_iF S  
temp=data; r#XDgZtI  
} & zG=  
int i1=l; 1Jahu!c?  
int i2=mid+1; 8.,PgS  
for(int cur=l;cur<=r;cur++){ @:[/uqL  
if(i1==mid+1) U0rz 4fxc  
data[cur]=temp[i2++]; &^<94l  
else if(i2>r) sJr$[?  
data[cur]=temp[i1++]; C>+UZ  
else if(temp[i1] data[cur]=temp[i1++]; 3 !,%;Vz=  
else #_E8>;)k  
data[cur]=temp[i2++]; x!< C0N>?z  
} K)qmJ-Gub  
} t~AesHZpk  
/nrDU*  
} WFkXz*7B  
Pwq} ;+  
改进后的归并排序: 68y.yX[  
eE&F1|8  
package org.rut.util.algorithm.support; {?C7BClB  
&(0iSS  
import org.rut.util.algorithm.SortUtil; `<K#bDU;a  
sLTf).xh  
/** DgdW.Kj|IL  
* @author treeroot .Ybm27Dk  
* @since 2006-2-2 )S%mKdOm $  
* @version 1.0 t`LH\]6@  
*/ u7/M>YJ`T  
public class ImprovedMergeSort implements SortUtil.Sort { '.iUv#j4Sh  
EgY]U1{  
private static final int THRESHOLD = 10; PQfx0n,  
v uJ~Lg{  
/* :70oO}0m.  
* (non-Javadoc) PH]q#/'  
* H`y- "L8q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `mMD e  
*/ [p <L*3<  
public void sort(int[] data) { GL/\uq  
int[] temp=new int[data.length]; +`[$w<I  
mergeSort(data,temp,0,data.length-1); &pCKz[Yf+  
} ^WeT3b q  
q%JV"9,  
private void mergeSort(int[] data, int[] temp, int l, int r) { ]\jhtC=2  
int i, j, k; MVdE7P  
int mid = (l + r) / 2; 7DI8r|~  
if (l == r)  E5o0^^  
return; P`"dj@1'  
if ((mid - l) >= THRESHOLD) 9@h>_1RJz  
mergeSort(data, temp, l, mid); G q 8/xxt  
else ^|8cS0dK]Q  
insertSort(data, l, mid - l + 1); A.y$.(  
if ((r - mid) > THRESHOLD) _|*j8v3  
mergeSort(data, temp, mid + 1, r); rOcfPLJi0  
else p* ^O 8o  
insertSort(data, mid + 1, r - mid); 9`b*Y*d  
tp1{)|pwY6  
for (i = l; i <= mid; i++) { P$!Ht  
temp = data; Tv(s?T6f  
}  W6a2I  
for (j = 1; j <= r - mid; j++) { }x%"Oq|2]x  
temp[r - j + 1] = data[j + mid]; 5X  
} ^wX_@?aKtt  
int a = temp[l]; r}vr E ^Q  
int b = temp[r]; Pd3t~1TaW  
for (i = l, j = r, k = l; k <= r; k++) { N8KHNTb-M  
if (a < b) { wo*/{KFvh  
data[k] = temp[i++]; akNJL\b  
a = temp; i3kI{8h  
} else {  ztTpMj  
data[k] = temp[j--]; o&>0 pc  
b = temp[j]; KR{kn[2|Q  
} ] $%{nj<  
} s#d>yx_b  
} \O^= Z{3y  
bT8BJY%+  
/** HkQ2G}<  
* @param data p}j{ <y  
* @param l I&^?,Fyy<  
* @param i 5B(|!Xq;I  
*/ ;B7>/q;g  
private void insertSort(int[] data, int start, int len) { Y(&phv&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); p>MX}^6  
} !D  
} 'dx4L }d  
} nrZv>r  
} ok7DI  
V-jo2+Y5=  
堆排序: p HWol!  
Uqkh@-6-  
package org.rut.util.algorithm.support; *{C)o0D  
Q,s,EooIx  
import org.rut.util.algorithm.SortUtil; <H$CCo  
']qC,;2  
/** 2)U3/TNe  
* @author treeroot jL 2f74?1  
* @since 2006-2-2 A?_2@6Y^  
* @version 1.0 ~>C!l k  
*/ EmLPq!C  
public class HeapSort implements SortUtil.Sort{ yqoi2J:  
~ 9'64  
/* (non-Javadoc) UH[ YH;3O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <q_H 3|  
*/ (=p}b:Z  
public void sort(int[] data) { * yt/ Dj  
MaxHeap h=new MaxHeap(); I{M2nQi  
h.init(data); {8t;nsdm!  
for(int i=0;i h.remove(); Ue8_Q8q5  
System.arraycopy(h.queue,1,data,0,data.length); ;  I=z  
} E fqa*,k  
c>]_,Br~  
private static class MaxHeap{ ZkqC1u3  
ka]n+"~==\  
void init(int[] data){ y{kXd1,  
this.queue=new int[data.length+1]; (2%C% #]8  
for(int i=0;i queue[++size]=data; zO!`sPP  
fixUp(size); A]R"C:o  
} BL]^+KnP  
} S?D2`b  
^%\p; yhL  
private int size=0; (s}9N   
 *A_  
private int[] queue; A@`C<O ^  
@GGyiK@  
public int get() { ~r!jVK>^  
return queue[1]; 8o~\L= l  
} _msDf2e9  
!4 6 ^}3  
public void remove() { :CH'Bt4<  
SortUtil.swap(queue,1,size--); {Q4=GrS  
fixDown(1); 'o5[ :=K  
} u D . 0?*_  
file://fixdown IMVoNKW-  
private void fixDown(int k) { ^\x PF5  
int j; gAR];(*  
while ((j = k << 1) <= size) { mTcLocx  
if (j < size %26amp;%26amp; queue[j] j++; y*zZ }>  
if (queue[k]>queue[j]) file://不用交换 <KJ18/  
break; iPHMyxT+S  
SortUtil.swap(queue,j,k); J_`.w  
k = j; OxqP:kM  
} b"x:IDW qG  
} M`"2;  
private void fixUp(int k) { 15SIZ:Q  
while (k > 1) { 9N9|hy  
int j = k >> 1; /oWB7l&  
if (queue[j]>queue[k]) _&yQW&vH#  
break; A~h8 >zz*  
SortUtil.swap(queue,j,k); C?b Mj[$  
k = j; \)r#?qn4z;  
} k 9s3@S  
} .}j@(D  
fDqlN`P@  
} \*_qP*vq@  
S$V'_  
} i++ F&r[  
W/J3sAYv  
SortUtil: xXLKL6F(\  
|Z!C`G[  
package org.rut.util.algorithm; vn|X,1o  
;m;wSp  
import org.rut.util.algorithm.support.BubbleSort; t-/%|@?D  
import org.rut.util.algorithm.support.HeapSort; "zm.jNn  
import org.rut.util.algorithm.support.ImprovedMergeSort; <$ '#@jW  
import org.rut.util.algorithm.support.ImprovedQuickSort; S,J'Z:spf  
import org.rut.util.algorithm.support.InsertSort; .H9!UQ&It  
import org.rut.util.algorithm.support.MergeSort; n) `4*d$`  
import org.rut.util.algorithm.support.QuickSort; JlG yGr^MD  
import org.rut.util.algorithm.support.SelectionSort; h j9 b Mj  
import org.rut.util.algorithm.support.ShellSort; eeuAo&L&  
|[xi"E\  
/** r?H {Y3 ,  
* @author treeroot ~|?2<g$gYR  
* @since 2006-2-2 Vd|/]Zj  
* @version 1.0 =(v/pLLK?  
*/ -Xx,"[sN\w  
public class SortUtil { sd>#Hn  
public final static int INSERT = 1; {*tewF)|  
public final static int BUBBLE = 2; RU[{!E  
public final static int SELECTION = 3; I7]45pF  
public final static int SHELL = 4; mVk:[ }l6  
public final static int QUICK = 5; JCE364$$"  
public final static int IMPROVED_QUICK = 6; ,{YC|uB  
public final static int MERGE = 7; P`RM"'Om  
public final static int IMPROVED_MERGE = 8; GAPZt4Z2  
public final static int HEAP = 9; mo <g'|0  
hZ$* sf  
public static void sort(int[] data) { l *pCG`@J#  
sort(data, IMPROVED_QUICK); US4X CJxB  
} oSE'-8(  
private static String[] name={ `/Z8mFs Y  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {T.$xiR  
}; A:k`Ykr[  
 #]n[  
private static Sort[] impl=new Sort[]{ TS@EE&Wq  
new InsertSort(), NcqE)"yObo  
new BubbleSort(), c a$D|3  
new SelectionSort(), R?^FO:nM%!  
new ShellSort(), uy7)9w  
new QuickSort(), V@T G"YF  
new ImprovedQuickSort(), 2{ }5WH  
new MergeSort(), :Im_=S[0  
new ImprovedMergeSort(), c1b@3  
new HeapSort() qC IZW  
}; OB5(4TY  
Cf8(J k`v|  
public static String toString(int algorithm){ )]rGGNF*  
return name[algorithm-1]; R%}OZJ_  
} Jd/ 5Kx  
MI<hShc\  
public static void sort(int[] data, int algorithm) { {hVSVx8ZL  
impl[algorithm-1].sort(data); H| IsjCc  
} bm(0raugs  
@$Z5A g!  
public static interface Sort { 0vDP- qJV-  
public void sort(int[] data); ?T?%x(]I  
} Xdw%Hw  
YjLPW@  
public static void swap(int[] data, int i, int j) { ^> ZQ:xs@(  
int temp = data; qo4AQ}0 <  
data = data[j]; : 8(~{<R  
data[j] = temp; o"TEmZUP  
} U{{RRK|  
} 9OP d'f  
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