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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。 :anR/  
插入排序: Z?<&@YQS  
KY%LqcC  
package org.rut.util.algorithm.support; z41v5rB4  
3s0 I<cL  
import org.rut.util.algorithm.SortUtil; |})v, o B  
/** V"|`Z}XW  
* @author treeroot @iU(4eX  
* @since 2006-2-2 ^H!45ph?Jc  
* @version 1.0 qoP /` Y6  
*/ ]i/Bq!d l  
public class InsertSort implements SortUtil.Sort{ M+VAol}1  
Zet80|q  
/* (non-Javadoc) vd [?73:C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y<t(m$s  
*/ VBtdx`9  
public void sort(int[] data) { =3Ohy,5L  
int temp; -uN M_|MO  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Hva/C{Y  
} rhDiIO_  
} ]P96-x  
} GP(ze-Yp  
oh7tE$"c  
} eGLB,29g  
fCbd]X  
冒泡排序: -Rwx`=6tV  
Ae;mU[MK/  
package org.rut.util.algorithm.support; vO)]~AiB  
L%<DLe^P`l  
import org.rut.util.algorithm.SortUtil; GvBmh.  
`|<? sjY  
/** d5"rCd[  
* @author treeroot MJA;P7g  
* @since 2006-2-2 XE8%t=V!c$  
* @version 1.0 y7Nd3\v [\  
*/ P7epBWqDP  
public class BubbleSort implements SortUtil.Sort{ L1kA AR  
T7^?j :kJ/  
/* (non-Javadoc) C;%1XFzM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T930tX6"h  
*/ %us#p|Ya  
public void sort(int[] data) { 8<{i=V*x4  
int temp; \ cdns;  
for(int i=0;i for(int j=data.length-1;j>i;j--){ T0@$6&b%\z  
if(data[j] SortUtil.swap(data,j,j-1); *mkVk7]c  
} ><qA+/4]_  
} )XDbg>  
} |zJ2ZE|  
} BdP+>Ij  
')TS'p,n  
} (K('@W%\?  
/z )Nz2W  
选择排序: Ab8Ke|fA  
CY\D.Eow  
package org.rut.util.algorithm.support; Mzw:c#  
M6j~`KSE  
import org.rut.util.algorithm.SortUtil; z<_a4 ffR  
8v)iOPmDC  
/** 7#7AK}   
* @author treeroot & @${@  
* @since 2006-2-2 9TbbIP1  
* @version 1.0 T@Z-;^aV  
*/ RWFvf   
public class SelectionSort implements SortUtil.Sort { |'j,|^<  
}nptmc  
/* pjma<^|F  
* (non-Javadoc) [ @2$W?0i  
* p || mR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U_RWqKL  
*/ |-HNHUF  
public void sort(int[] data) { z 'V$)U$f  
int temp; F<^f6z8  
for (int i = 0; i < data.length; i++) { pwRCfR)"X  
int lowIndex = i;  7gx?LI_e  
for (int j = data.length - 1; j > i; j--) { o?^Rw*u0/  
if (data[j] < data[lowIndex]) { ByacSN  
lowIndex = j; nG-DtG^z  
} Lf`<4 P  
} v SY YetL  
SortUtil.swap(data,i,lowIndex); 1--Ka& H  
} _}cD_$D  
} J06 D_'{  
yG;@S8zC  
} I]%Kd('  
0es\ j6c  
Shell排序: j9X|c7|  
vnS8N  
package org.rut.util.algorithm.support; tns4e\  
f@k.4aS  
import org.rut.util.algorithm.SortUtil; ^b4i9n,t1  
m ?*h\NaB  
/** 5?0~7^de  
* @author treeroot 211V'|a_ >  
* @since 2006-2-2 -`NzBuV$2,  
* @version 1.0 ,YJn=9pTl  
*/ &A=c[pc  
public class ShellSort implements SortUtil.Sort{ P&yB(M-z  
F:~@e(  
/* (non-Javadoc) ay#f\P!1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =2YXh,i  
*/ :? s{@7  
public void sort(int[] data) { Y ` Z,52  
for(int i=data.length/2;i>2;i/=2){ /&9R*xNST#  
for(int j=0;j insertSort(data,j,i); JIsi  
} yq1 G6hw  
} '2UQN7@d  
insertSort(data,0,1); ~[f`oC  
} Er - rm  
7* [  
/** N( f0,  
* @param data QP<.~^ao  
* @param j zN=s]b=/  
* @param i V9Dq<y-y  
*/ 2qQ;U?:q  
private void insertSort(int[] data, int start, int inc) { !N!AO(Z  
int temp; x[u6_6=q9  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qj4jM7  
} w"W;PdH)  
} P#V}l'j(<a  
} lPrAx0m13%  
Hv2[=elc  
} cc8Q}   
$<"I*l@  
快速排序: 0M?zotv0#  
o' v!83$L  
package org.rut.util.algorithm.support; yivWT;`  
~SmFDg$/m  
import org.rut.util.algorithm.SortUtil; ZUvc|5]  
7fXJP5j  
/** /x4L,UJ= P  
* @author treeroot p 16+(m  
* @since 2006-2-2 c?KIHZ0  
* @version 1.0 #<s"?Y%-  
*/ @}Q!K*  
public class QuickSort implements SortUtil.Sort{ ] g8z@r"b  
ML0_Uc3en  
/* (non-Javadoc) p=^6V"'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t,Q"Pt?  
*/ JcMl*k  
public void sort(int[] data) { suYbD!`(  
quickSort(data,0,data.length-1); G(ZEP.h`u  
} dk"@2%xJ2d  
private void quickSort(int[] data,int i,int j){ A~^x*#q{4  
int pivotIndex=(i+j)/2; NNwGRoDco  
file://swap 4TYtgP1  
SortUtil.swap(data,pivotIndex,j); 18p4]:L  
Wc,`L$Jx  
int k=partition(data,i-1,j,data[j]); Z$B%V t  
SortUtil.swap(data,k,j); Ypxp4B  
if((k-i)>1) quickSort(data,i,k-1); 5X9Lh_p  
if((j-k)>1) quickSort(data,k+1,j);  Pa?{}A  
fsWIz1K  
} nrX+  '  
/** i r'C(zD=  
* @param data P]OUzI,  
* @param i KXpbee  
* @param j o,S(;6pDJ  
* @return $My~sN8  
*/ t*dq*(3"c  
private int partition(int[] data, int l, int r,int pivot) { PS=q):R|  
do{ rQJ\Y3.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z3=N= xY]  
SortUtil.swap(data,l,r); V-E 77u6{0  
} 7#Uzz"^  
while(l SortUtil.swap(data,l,r); Mvp|S.  
return l; I$4>_D  
} 'Sesh'2 /  
/a9CqK  
} C7f*Q[  
}%<_>b\  
改进后的快速排序: 9XhH*tBn7(  
VvT7v]  
package org.rut.util.algorithm.support; JT=ax/%Mo  
=-&h@mB;G  
import org.rut.util.algorithm.SortUtil; l|iOdKr h  
>_G'o  
/** 2E`mbT,v&  
* @author treeroot =''b`T$  
* @since 2006-2-2 {oR@'^N  
* @version 1.0 B =7maYeU  
*/  cV_-Bcb  
public class ImprovedQuickSort implements SortUtil.Sort { wAJ= rRI  
)]4=anJu@|  
private static int MAX_STACK_SIZE=4096; u^#e7u  
private static int THRESHOLD=10; mlUj%:Gm#  
/* (non-Javadoc) G \Nnw==v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d @ l  
*/ B !wr}]  
public void sort(int[] data) { 4%|r$E/TQ  
int[] stack=new int[MAX_STACK_SIZE]; n)z:C{  
2?v }w<Ydl  
int top=-1; FjLMN{eH/  
int pivot; 3N|6?'m  
int pivotIndex,l,r; E@#<p-@~  
]!N=Z }LD  
stack[++top]=0; Hl'AnxE  
stack[++top]=data.length-1; cMoJHC,!  
x9S9%JG :  
while(top>0){ ?;.=o?e9  
int j=stack[top--]; @A<~bod  
int i=stack[top--]; JfK4|{@  
(ss,x CF  
pivotIndex=(i+j)/2; *OIBMx#qxn  
pivot=data[pivotIndex]; ZU;jz[}  
F6b;qb6n  
SortUtil.swap(data,pivotIndex,j); }qWB=,8HQ  
TJ_6:;4,|_  
file://partition Zb|a\z8?  
l=i-1; {E7STLQ_%  
r=j;  qmenj  
do{ ,A)Z .OWOq  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ET 0(/Zz  
SortUtil.swap(data,l,r); q_mxZM ->  
} jzZ]+'t  
while(l SortUtil.swap(data,l,r); uPxjW"M+  
SortUtil.swap(data,l,j); g5u4|+70  
TIR Is1  
if((l-i)>THRESHOLD){ (<-m|H};  
stack[++top]=i;  pn) {v  
stack[++top]=l-1; mEkYT  
} w`3.wALb  
if((j-l)>THRESHOLD){ (d (>0YMv  
stack[++top]=l+1; eT]*c?"  
stack[++top]=j; ry@p  
} 4\g[&  
;DVg[#  
} z|Yt|W  
file://new InsertSort().sort(data); Df:/r%  
insertSort(data); C5$?Y8B3  
} vy2"B ch  
/** <h}x7y?  
* @param data xU}J6 Tv  
*/ /L@6Ae  
private void insertSort(int[] data) { +c, ^KHW  
int temp; T:9M|mD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bZK^q B  
} pjFj{  
} @Y>PtA&w*  
} ;Ru[^p.{  
Q&_#R(3j;  
} >l/pwb@  
%y*'bS  
归并排序: t)g %9 k^  
`PvS+>q  
package org.rut.util.algorithm.support; XW@C_@*J  
q(L.i)w$  
import org.rut.util.algorithm.SortUtil; z"QXPIXPk  
yLK %lP  
/** &0"*.:J9  
* @author treeroot &^uaoB0  
* @since 2006-2-2 Ro<x#Uo  
* @version 1.0 [McqwU/Q  
*/ a" T+CA  
public class MergeSort implements SortUtil.Sort{ &-JIXVd*R  
-S&9"=v  
/* (non-Javadoc) a1u4v/Qu9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [z+YX s!N  
*/ ^tWSu?9  
public void sort(int[] data) { 6d2e WS  
int[] temp=new int[data.length]; *.+F]-  
mergeSort(data,temp,0,data.length-1); qt/6o|V  
} PMW@xk^<Y  
>K1e=SY  
private void mergeSort(int[] data,int[] temp,int l,int r){ bFlI:R&<  
int mid=(l+r)/2; e7\gd\  
if(l==r) return ; 1 XJZuv,T:  
mergeSort(data,temp,l,mid); [7[Qw]J  
mergeSort(data,temp,mid+1,r); [KbLEMrPba  
for(int i=l;i<=r;i++){ NWQ7%~#k*  
temp=data; T4gfQ6#  
} qLc&.O.=  
int i1=l; BI<9xl]a  
int i2=mid+1; ko'V8r `V  
for(int cur=l;cur<=r;cur++){ !M9mX%UQ  
if(i1==mid+1)  w}t}Sh  
data[cur]=temp[i2++]; m qUDve(  
else if(i2>r) Fi\) ka\u  
data[cur]=temp[i1++]; |ITb1O`_P  
else if(temp[i1] data[cur]=temp[i1++]; x2aG5@<3  
else -f1}N|hy  
data[cur]=temp[i2++]; ;X0uA?  
} I,,SR"  
} aRI.&3-  
XFl&(I4tB  
} !W0JT#0  
E?|NYu#I6  
改进后的归并排序: .*>C[^  
X.,R%>O}`P  
package org.rut.util.algorithm.support; m(kv:5<>  
R\#5;W^  
import org.rut.util.algorithm.SortUtil; 3pL4 Zhf  
R[fQ$` M  
/** c'Z)uquvP  
* @author treeroot TL7qOA7^X  
* @since 2006-2-2 6"}F KRR  
* @version 1.0 EM +! ph  
*/ 0b8=94a{>  
public class ImprovedMergeSort implements SortUtil.Sort { yv>uzb`N  
i.?rom  
private static final int THRESHOLD = 10; wN/v-^2  
DAORfFG74  
/*   uk,9N  
* (non-Javadoc) In!^+j  
* b].U/=Hs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xXmlHo<D  
*/ eWD!/yr|  
public void sort(int[] data) { /l3Oi@\  
int[] temp=new int[data.length]; p} eO  
mergeSort(data,temp,0,data.length-1); "[7'i<,AI  
} \VW":+  
'.S02=/  
private void mergeSort(int[] data, int[] temp, int l, int r) { w T_l>u  
int i, j, k; .W2w/RayC  
int mid = (l + r) / 2; \ :q@I]2  
if (l == r) Dvl\o;  
return; XH/!A`ZK  
if ((mid - l) >= THRESHOLD) ]*U; }  
mergeSort(data, temp, l, mid); Q`Pe4CrWvu  
else HJpx,NU'  
insertSort(data, l, mid - l + 1); (dO0`wfM  
if ((r - mid) > THRESHOLD) yGC HWP  
mergeSort(data, temp, mid + 1, r); }NdLd!  
else |o(te  
insertSort(data, mid + 1, r - mid); f.oY:3h:  
xUa9>=JU{  
for (i = l; i <= mid; i++) { UCFFF%  
temp = data; ';D>Z ?l  
} l ^}5PHLd  
for (j = 1; j <= r - mid; j++) { HL>l.IG?  
temp[r - j + 1] = data[j + mid]; EUH9R8)  
} w Bm4~ ~_  
int a = temp[l]; p}wysVB  
int b = temp[r]; Tkp"mT v?<  
for (i = l, j = r, k = l; k <= r; k++) { 4mX]JH`UTe  
if (a < b) { L5 Ai  
data[k] = temp[i++]; wGIRRM !b  
a = temp; hg'eSU$J  
} else { ^%g 8OP  
data[k] = temp[j--]; r( wtuD23q  
b = temp[j]; Iq6EoDoq  
} Dsv2p~  
} z\K %  
} P#8lO%;  
8+(wAbp  
/** ,,#6SR(n  
* @param data 78?{;iNv  
* @param l L6!Hv{ijn  
* @param i F4Cq85#  
*/ }20tdD ~  
private void insertSort(int[] data, int start, int len) { p_apVm\t_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); f6Y-ss;'  
} F%%mcmHD#  
} wZ `{ i  
} [kgCB7.V  
} Olt;^> MQ  
j{=}?+M  
堆排序: 7.n\a@I/  
w&]$!g4  
package org.rut.util.algorithm.support; `7V1 F.\  
PtL8Kd0`C  
import org.rut.util.algorithm.SortUtil; .uN(44^+x  
uLI;_,/:  
/** JZ-64OT  
* @author treeroot G[OJ <px  
* @since 2006-2-2 8/u kzY1!  
* @version 1.0 KR hls"\1  
*/ "(';UFa  
public class HeapSort implements SortUtil.Sort{ pB%oFWqK  
^HI2Vp  
/* (non-Javadoc) 20J-VN:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SVV-zz]3M  
*/ mfDt_Iq  
public void sort(int[] data) { *Id[6Z  
MaxHeap h=new MaxHeap(); Y[>`#RhP  
h.init(data); 4)L};B=  
for(int i=0;i h.remove(); PBiA/dG[;  
System.arraycopy(h.queue,1,data,0,data.length); FS('*w&bP  
} ^EmePkPI  
iT{[zLz>1  
private static class MaxHeap{ I;, n|o  
9c{ ~$zJW  
void init(int[] data){ X>]<rEh  
this.queue=new int[data.length+1]; 2:yXeSeA  
for(int i=0;i queue[++size]=data; CWd &  
fixUp(size); O\%0D.HEz  
} aouYPxA`  
} wg:\$_Og  
v9t'CMU  
private int size=0; sULsUt#  
&{q'$oF  
private int[] queue; }XCh>LvX  
 8#1o  
public int get() { /Vx EqIK  
return queue[1]; AB<bW3qf(  
} N\CHIsVm>  
E^pn-rB  
public void remove() { } R hSt]  
SortUtil.swap(queue,1,size--); ,. <c|5R  
fixDown(1); BcQw-<veu  
} X%7l! k[  
file://fixdown RYl\Q,#  
private void fixDown(int k) { 4 .(5m\s!  
int j; aH, NS   
while ((j = k << 1) <= size) { %[o($a$  
if (j < size %26amp;%26amp; queue[j] j++; iI*qx+>f?  
if (queue[k]>queue[j]) file://不用交换 7|!Zx-}  
break; l#p?lBm1  
SortUtil.swap(queue,j,k); <v\x<ul6  
k = j; @TzUc E  
} zMO xJ   
} ]2[\E~^KU  
private void fixUp(int k) { B.gEV*@  
while (k > 1) { CT<z1)#@^  
int j = k >> 1; '3E25BsL  
if (queue[j]>queue[k]) ?dCJv_w  
break; ~BnmAv$m[  
SortUtil.swap(queue,j,k); W3R43>$  
k = j; nwDGzC~y<  
} $)=`Iai  
} AD6 b  
r -uu`=,  
} D<*) ^^  
Q7mikg=1-  
} ZA'0 q  
-KqMSf&9  
SortUtil: 'loko#6  
/c7jL4oD  
package org.rut.util.algorithm; CXi:?6OG  
f\Q_]%^W  
import org.rut.util.algorithm.support.BubbleSort; )|Ka'\xr  
import org.rut.util.algorithm.support.HeapSort; I3}I7oc_  
import org.rut.util.algorithm.support.ImprovedMergeSort; [Qqss8a  
import org.rut.util.algorithm.support.ImprovedQuickSort; ZiaFByLy  
import org.rut.util.algorithm.support.InsertSort; ,z+n@sUR:  
import org.rut.util.algorithm.support.MergeSort; #210 Yp#  
import org.rut.util.algorithm.support.QuickSort; K_qA[n  
import org.rut.util.algorithm.support.SelectionSort; Enp;-wG:-  
import org.rut.util.algorithm.support.ShellSort; 7--E$ !9O,  
+.*=Fn22  
/** "!D,9AkZS  
* @author treeroot =:H EF;!  
* @since 2006-2-2 `2q]ju  
* @version 1.0 &m TYMpA  
*/ $ ]^Io)}f@  
public class SortUtil { ~P*{%=a  
public final static int INSERT = 1; Ve40H6 Ox  
public final static int BUBBLE = 2; ]2iEi`"[  
public final static int SELECTION = 3;  SxX  
public final static int SHELL = 4; iU# "G" &  
public final static int QUICK = 5; }0OQm?xh  
public final static int IMPROVED_QUICK = 6; JPg^h  
public final static int MERGE = 7; \e%%ik,<  
public final static int IMPROVED_MERGE = 8; ]BmnE#n&  
public final static int HEAP = 9; CUaL  
$vn x)#r3  
public static void sort(int[] data) { h6;zAM}  
sort(data, IMPROVED_QUICK); F-D$Y?m  
} 5hDPX \  
private static String[] name={ TR'_v[uK3  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"  D28>e  
}; q$}gQ9'z'  
')(U<5y)  
private static Sort[] impl=new Sort[]{ 6ywO L'OBM  
new InsertSort(), mdcsL~R  
new BubbleSort(), J{n A ?[  
new SelectionSort(), )6px5Vwz  
new ShellSort(), hE4qs~YB!  
new QuickSort(), ^Qxv5HS2  
new ImprovedQuickSort(), <J.q[fd1*  
new MergeSort(), (Hs,Tj  
new ImprovedMergeSort(), 'GLpSWL+*  
new HeapSort() QEF$Jx  
}; (!9+QXb'  
`9|Uu#x  
public static String toString(int algorithm){ H9WXp&  
return name[algorithm-1]; e&NJj:Ph*  
} =L{-Hu/j  
?&VKZSo  
public static void sort(int[] data, int algorithm) { 9N6 \Ou~  
impl[algorithm-1].sort(data); )C rsm&  
} [?2,(X0yh1  
SES-a Mi3  
public static interface Sort { Na+h+wD.D  
public void sort(int[] data); !y$+RA7\  
} "2PT]!  
hsYv=Tw3C  
public static void swap(int[] data, int i, int j) { b]N&4t  
int temp = data; fC$@m_-KD  
data = data[j]; ]q&NO(:kbq  
data[j] = temp; lLU8eHf\  
} BUyKiMW49  
} mR8tW"Z2  
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