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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。 WHNb.>  
插入排序: >}4]51s  
N!h>fE`  
package org.rut.util.algorithm.support; c%Gz{':+  
&\"fH+S  
import org.rut.util.algorithm.SortUtil; tLvli>y@  
/** &)X<yd0  
* @author treeroot rmabm\QY  
* @since 2006-2-2 i;xg[e8.  
* @version 1.0 KPR{5  
*/ M:I,j  
public class InsertSort implements SortUtil.Sort{ ,gOQI S56  
D46| )-  
/* (non-Javadoc) <GNOT"z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _yoG<qI  
*/ eXOFAd]>u  
public void sort(int[] data) { GDcV1$NA  
int temp; 4z*_,@OA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I L\mFjZ'  
} >bZ#  
} 2ga}d5lu  
} TdE_\gEo/R  
=#^dG ''*"  
} }2 r08,m  
%om7h$D =`  
冒泡排序: B_&PK7vA  
L_.}z)S[\  
package org.rut.util.algorithm.support; IRU2/Ycg  
)/ZSb1!  
import org.rut.util.algorithm.SortUtil; +>3c+h,%.  
 ~Afs  
/** ;VuB8cnL`  
* @author treeroot i4pJIb  
* @since 2006-2-2 f2u2Ns0Ym  
* @version 1.0 {+[gf:Ev  
*/ lET)<V(Y  
public class BubbleSort implements SortUtil.Sort{ +|H'I j$  
amSyGQ2  
/* (non-Javadoc) &7W6IM   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >'jM8=o*Ax  
*/ ]Bsq?e^  
public void sort(int[] data) { sWC"^ So  
int temp;  KC(Ug4  
for(int i=0;i for(int j=data.length-1;j>i;j--){ bpx=&74,6m  
if(data[j] SortUtil.swap(data,j,j-1); :L[6a>"neE  
} <^\r9Qxl  
} Imw x~eo  
} $G_<YVXcG  
} LF~#4)B  
uUe\[-~  
} {_~G+rqY  
[GP( r  
选择排序: xS}H483h6W  
x-pMT3m\D#  
package org.rut.util.algorithm.support; _tk5?9Ykn  
K7.<,E"M.  
import org.rut.util.algorithm.SortUtil; zoJ;5a.3B  
~ YK <T+  
/** @5y(>>C}8%  
* @author treeroot /wTf&_"mTL  
* @since 2006-2-2 gJ&!w8v.  
* @version 1.0 y]l"u=$Tr{  
*/ 6.|~~/  
public class SelectionSort implements SortUtil.Sort { ay_D.gxz  
lnDDFsA  
/* 9^='&U9sr  
* (non-Javadoc) $dP)8_Z2  
* ;*2e;m~)?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~Z]vr6?$h  
*/ "Y!dn|3  
public void sort(int[] data) { Uot-@|l  
int temp; lX*;KHT)  
for (int i = 0; i < data.length; i++) { .A\\v6@  
int lowIndex = i; Jg:-TK/  
for (int j = data.length - 1; j > i; j--) { SR& mHI-f0  
if (data[j] < data[lowIndex]) { x+cF1 N2.  
lowIndex = j; |T_Pz& -  
} bUN,P"  
} LJwMM  
SortUtil.swap(data,i,lowIndex); @MB _gt)7?  
} \+3Wd$I  
} wzPw; xuG  
;a&:r7]=  
} (nD$%/uK'  
X`n0b<  
Shell排序: {z/^X<T  
c@-K  
package org.rut.util.algorithm.support; A+*oT(`  
1=Zw=ufqV  
import org.rut.util.algorithm.SortUtil; 50ew/fZj|  
NNw d;AC  
/** Tud1xq  
* @author treeroot _IV@^v  
* @since 2006-2-2 G}#/`]o!K  
* @version 1.0 En9]x"_  
*/ S<3!oDBs  
public class ShellSort implements SortUtil.Sort{ Ig3(|{R  
.'b3iG&  
/* (non-Javadoc) d?M!acB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d^5SeCs6  
*/ ^:!(jiH  
public void sort(int[] data) { yVI;s|jG  
for(int i=data.length/2;i>2;i/=2){ o,Zng4NY  
for(int j=0;j insertSort(data,j,i); 46Q; F  
} R96o8#7Uv  
} L-C/Luws  
insertSort(data,0,1); |SP.S 0.y  
} pR6A#DgB  
.Spi$>v  
/** Sq|1f?_gU  
* @param data X;6r $   
* @param j >?9 WeXG  
* @param i C6'*/wq  
*/ vvsNWA  
private void insertSort(int[] data, int start, int inc) { Ac!&j=ZE  
int temp; Gr#rM/AfCK  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tM$0 >E  
} S`c]Fc  
} @ oz&  
} # 5f|1O  
Ef`5fgp? S  
} Iwt2}E(e  
%V%#y $l  
快速排序: c_G-R+  
KBr5bcm4u  
package org.rut.util.algorithm.support; < k+fKl  
PF'5z#] NP  
import org.rut.util.algorithm.SortUtil; 4ljvoJ}xjr  
dx13vZ3[U  
/** BH#C<0="  
* @author treeroot XJJ[F|k~  
* @since 2006-2-2 |.8d,!5w}  
* @version 1.0 *K}z@a_  
*/ u_4:#~b  
public class QuickSort implements SortUtil.Sort{ c#n4zdQd]5  
b>bgUDq  
/* (non-Javadoc) 2%5^Fi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AY&9JSu 6  
*/ 17 i<4f#  
public void sort(int[] data) { Pu$kj"|q*[  
quickSort(data,0,data.length-1); npO@Haw  
} )l!J$X+R  
private void quickSort(int[] data,int i,int j){ !Bk[p/\  
int pivotIndex=(i+j)/2; 0H OoKh  
file://swap B_."?*|w  
SortUtil.swap(data,pivotIndex,j); FtFv<UV  
_@#uIOcE  
int k=partition(data,i-1,j,data[j]); &?/N}g@K  
SortUtil.swap(data,k,j); N"YK@)*Q  
if((k-i)>1) quickSort(data,i,k-1); -YzQ2#K  
if((j-k)>1) quickSort(data,k+1,j); vz;7} Zj]  
lruF96C/Y  
} Uh3wj|0  
/** [!J @a  
* @param data 7m|`tjQ1  
* @param i ~^lH ^J   
* @param j ~t{D5#LVHa  
* @return m4P hn~>Gg  
*/ }g>dn  
private int partition(int[] data, int l, int r,int pivot) { bU;}!iVc]  
do{ saGRP}7?  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WZ^{zFoZ  
SortUtil.swap(data,l,r); MB ]#%g&  
} /*u#Ba<<  
while(l SortUtil.swap(data,l,r); 8%;}LK  
return l; |MTpU@`p5  
} %^a]J"Ydi8  
4*0:bhhhf_  
} l;XU#6{  
TpJg-F  
改进后的快速排序: m0=cMVCA!  
2wB.S_4"-<  
package org.rut.util.algorithm.support; QuSV&>T\  
5~@?>)TBv  
import org.rut.util.algorithm.SortUtil; +dqk 6RE  
zb"rMzCH  
/** Ef2Y l  
* @author treeroot <\ y!3;  
* @since 2006-2-2 mSU@UD|'  
* @version 1.0 CTl(_g  
*/ $T"h";M)s  
public class ImprovedQuickSort implements SortUtil.Sort { p Tcbq  
! G*&4V3Mg  
private static int MAX_STACK_SIZE=4096; O{PW  
private static int THRESHOLD=10; L/Hv4={  
/* (non-Javadoc) uzHT.iBn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +J"'  'cZ  
*/ MQwIPjk8  
public void sort(int[] data) { TG1P=g5h  
int[] stack=new int[MAX_STACK_SIZE]; ]kRI}Om2  
znt)]>f#  
int top=-1; FXS^^p P  
int pivot; i][f#e4  
int pivotIndex,l,r; Rb)|66&3&  
Y^ QKp"  
stack[++top]=0; tC^ 1}  
stack[++top]=data.length-1; T_eJ}(p  
9*4 .  
while(top>0){ w'A tf  
int j=stack[top--]; %Nj #0YF]  
int i=stack[top--]; cC' ~  
x5oOF7#5  
pivotIndex=(i+j)/2; ,"B?_d6  
pivot=data[pivotIndex]; 3S5^ `Ag#  
uG;?vvg>  
SortUtil.swap(data,pivotIndex,j); J7:9_/ e0T  
?{eY\I  
file://partition }g>kpa0c  
l=i-1; "# 2pT H~  
r=j; S.: 7k9  
do{ Jn=42Q:>  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); BBxc*alG0  
SortUtil.swap(data,l,r); R"Kz!NTB  
} #,&8&  
while(l SortUtil.swap(data,l,r); :s"2Da3B  
SortUtil.swap(data,l,j); 34z+INkX  
1fY>>*oP  
if((l-i)>THRESHOLD){ GF'f[F6oI  
stack[++top]=i; ;'}'5nO=$  
stack[++top]=l-1; s)k y/ce  
} cvfUyp;P  
if((j-l)>THRESHOLD){ F+uk AT  
stack[++top]=l+1; 89Z#|#uM5  
stack[++top]=j; =We2^W-{  
} 9 Kbw GmSU  
KQ{Lt?S  
} J4>;[\%m  
file://new InsertSort().sort(data); zsVcXBz  
insertSort(data); IP ,.+:i  
} ]g,lRG  
/** >b48>@~bY  
* @param data Nqc p1J"  
*/ VI_+v[Hk/  
private void insertSort(int[] data) { ]-:6T0JuS  
int temp; \|%E%Yc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~}Z'0W)Q`z  
} Vb!O8xV4;+  
} Fp%Ln(/m  
} AnMV <  
()\jCNLT  
} :q (&$  
 3-|3`(  
归并排序: 68e[:wf  
H0>yi[2f  
package org.rut.util.algorithm.support; W5SNI>|E  
bd== +   
import org.rut.util.algorithm.SortUtil; M0w/wt|  
opp!0:jS*  
/** VagT_D  
* @author treeroot zzIr2so  
* @since 2006-2-2 =a$Oecg?  
* @version 1.0 g"K>5Cb  
*/ <)U4Xz?  
public class MergeSort implements SortUtil.Sort{ V.=lGhi  
.L EY=j!-s  
/* (non-Javadoc) |"]PCb)!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M%`\P\A  
*/ L/Vx~r`P  
public void sort(int[] data) { Zu/<NC (  
int[] temp=new int[data.length]; 8P2 J2IU  
mergeSort(data,temp,0,data.length-1); $yu?.b 9H#  
} Y)|N"f;  
z|N3G E(.@  
private void mergeSort(int[] data,int[] temp,int l,int r){ fex,z%}p  
int mid=(l+r)/2; )uheV,ZnY  
if(l==r) return ; FN^FvQ  
mergeSort(data,temp,l,mid); c#cx>wq9  
mergeSort(data,temp,mid+1,r); k'3Wt*i  
for(int i=l;i<=r;i++){ )rtomp:X  
temp=data; W|5_$p  
} cg{AMeW  
int i1=l; o{WyQ&2N  
int i2=mid+1; !L24+$  
for(int cur=l;cur<=r;cur++){ YY5!_k  
if(i1==mid+1) *>[3I}mM  
data[cur]=temp[i2++]; (k?7:h  
else if(i2>r) L.'}e{ldW  
data[cur]=temp[i1++]; 6iA( o*'Yn  
else if(temp[i1] data[cur]=temp[i1++]; |j~lkzPnV  
else 1;F`c`0<  
data[cur]=temp[i2++]; I]`-|Q E  
} r 2:2,5_  
}  aSutM  
s^8u&y)3  
} f!_ ctp  
<wd]D@l7r  
改进后的归并排序: Vu8,(A7D%O  
"sUyHt-&  
package org.rut.util.algorithm.support; w3T]H_V  
r' Z3  
import org.rut.util.algorithm.SortUtil; E%N2k|%8d_  
pv)`%<  
/** Nf41ZT~  
* @author treeroot GX{XdJD  
* @since 2006-2-2 {R6HG{"IS6  
* @version 1.0 KKe8 ly,  
*/ qQ]]~F  
public class ImprovedMergeSort implements SortUtil.Sort { 0E`1HP"b  
}28=  
private static final int THRESHOLD = 10; #KlCZ~s  
-V.d?A4"  
/* r=.A'"Kf  
* (non-Javadoc) 8 .>/6M  
* ]b?9zeT*'l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !U%T&?E l  
*/ 5&Ts7& .  
public void sort(int[] data) { &EGqgNl  
int[] temp=new int[data.length]; $tqJ/:I  
mergeSort(data,temp,0,data.length-1); 1 T<+d5[C  
} "UFs~S|e  
68fiG  
private void mergeSort(int[] data, int[] temp, int l, int r) { .wA+S8}S  
int i, j, k; )j l 8!O7  
int mid = (l + r) / 2; SymwAS+  
if (l == r) . 5y"38e  
return; K kW;-{c  
if ((mid - l) >= THRESHOLD) 2NGe C0=  
mergeSort(data, temp, l, mid); <yA}i"-1W  
else )m3Uar  
insertSort(data, l, mid - l + 1); e!-,PU9+  
if ((r - mid) > THRESHOLD) 2| iV,uJ&  
mergeSort(data, temp, mid + 1, r); Rgy- OA  
else /&#XhrT  
insertSort(data, mid + 1, r - mid); $q?$]k|M`  
^g1f X1  
for (i = l; i <= mid; i++) { [&[^G25  
temp = data; 1F8 W9b^D  
} -Y#sI3o*R8  
for (j = 1; j <= r - mid; j++) { bu7'oB~:V^  
temp[r - j + 1] = data[j + mid]; ]Y>h3T~  
} 5wao1sd#  
int a = temp[l]; F7L&=K$2y  
int b = temp[r]; RgdysyB  
for (i = l, j = r, k = l; k <= r; k++) { _mvxsG  
if (a < b) { W W2Ob*  
data[k] = temp[i++]; G0 J4O!3  
a = temp; j:T/iH!YF  
} else { ,d+fDmm3  
data[k] = temp[j--]; ,Y?sfp  
b = temp[j]; , ^F)L|  
} L TV{{Z+  
} ZoB*0H-  
} @$"J|s3M  
mffn//QS  
/** NgCuFL(Ic  
* @param data u?Tpi[ #  
* @param l 5AS[\CB4  
* @param i Qp"y?S  
*/ jr7C}B-Fb^  
private void insertSort(int[] data, int start, int len) { "vYE+   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); UtB6V)YI  
} l\AMl \  
} jN-vY<?h]  
} etT +  
} +;g {$da5  
QVF]Ci_=  
堆排序: _zt1 9%Wg  
EV#MQM  
package org.rut.util.algorithm.support; {8,<ZZ_  
jV#ahNq;  
import org.rut.util.algorithm.SortUtil; zf4Ec-)  
(Rk_-9_E.  
/** \ \BCcr\l  
* @author treeroot #j#_cImE  
* @since 2006-2-2 +X`V|E,no  
* @version 1.0 wiaX&-c]8  
*/ !3i Gz_y  
public class HeapSort implements SortUtil.Sort{ 6C>_a*w  
O%1v) AT&\  
/* (non-Javadoc) >e2<!#er|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xvzr:p P  
*/ %8*64T")  
public void sort(int[] data) { kyAXRwzI  
MaxHeap h=new MaxHeap(); 87 }&`  
h.init(data); VL[R(a6c <  
for(int i=0;i h.remove(); 8ul&x~2;X  
System.arraycopy(h.queue,1,data,0,data.length); *5zrZ]^  
} Tu{h<Zy  
2j(h+?N7k  
private static class MaxHeap{ ZYf2XI(_"  
-",=G\XZ  
void init(int[] data){ 2,lqsd:xM  
this.queue=new int[data.length+1]; &U+ _ -Ph  
for(int i=0;i queue[++size]=data; 7r|(}S  
fixUp(size); T081G`li  
} yCJFo  
} Oz|K8p  
8 #ndFpu  
private int size=0; %{3 aW>yx  
5TBp'7 /s~  
private int[] queue; )s1Ib4C  
}M1sksk5  
public int get() { ?ER-25S  
return queue[1]; =%zLh<3v  
} yq+!czlZ  
Z%GTnG|rG  
public void remove() { MNH1D! }  
SortUtil.swap(queue,1,size--); jjJ2>3avY  
fixDown(1); j)t+jcMUI  
} Mv c`)_Md  
file://fixdown ;['[?wk  
private void fixDown(int k) { P}.7Mehf  
int j; m/NdJMoN=  
while ((j = k << 1) <= size) { 0 ugT2%  
if (j < size %26amp;%26amp; queue[j] j++; <p;k)S2J  
if (queue[k]>queue[j]) file://不用交换 DmXcPJ[9  
break; K[chjp!$l  
SortUtil.swap(queue,j,k); yL;M"L  
k = j; M MzGd:0b  
} lnE+Au'  
} Jc)^49Rf  
private void fixUp(int k) { tNVV)C  
while (k > 1) { L6>pGx  
int j = k >> 1; 1 nvTce  
if (queue[j]>queue[k]) (Qgde6  
break; kt4d; 4n  
SortUtil.swap(queue,j,k); j@Qg0F  
k = j; EBtLzbj  
} Kb =@ =Xta  
} v#=`%]mL  
K^r)CCO  
} x\2?ym@  
n;R#,!<P  
} Oi"a:bCU  
W4;m H}#0  
SortUtil: !L5jj#0  
k`".  
package org.rut.util.algorithm; 8Ry74|`=R  
M5T9JWbN  
import org.rut.util.algorithm.support.BubbleSort; OL7_'2_z.  
import org.rut.util.algorithm.support.HeapSort; ,:+d g(\r  
import org.rut.util.algorithm.support.ImprovedMergeSort; ] 4+s$rG  
import org.rut.util.algorithm.support.ImprovedQuickSort; |}){}or  
import org.rut.util.algorithm.support.InsertSort; s<x1>Q7X~  
import org.rut.util.algorithm.support.MergeSort; U $Qv>7  
import org.rut.util.algorithm.support.QuickSort; IPuA#C  
import org.rut.util.algorithm.support.SelectionSort; w@2Vts  
import org.rut.util.algorithm.support.ShellSort; "i:T+#i({O  
P#v*TD'  
/** {;2i.m1  
* @author treeroot \b}~2oX  
* @since 2006-2-2 #6Xs.*b5C  
* @version 1.0 >-E<n8  
*/ R`F,aIJ]  
public class SortUtil {  TIy&&_p  
public final static int INSERT = 1; 1Xy]D  
public final static int BUBBLE = 2; L.6WiVP)  
public final static int SELECTION = 3; 5>9Y|UU  
public final static int SHELL = 4; PR<||"03  
public final static int QUICK = 5; ;0ME+]`"3  
public final static int IMPROVED_QUICK = 6; IB.yU,v  
public final static int MERGE = 7; v;{{ y-  
public final static int IMPROVED_MERGE = 8; y( r1I[W'  
public final static int HEAP = 9; 3+MB5 T  
}4c o)B"  
public static void sort(int[] data) { 6]Q3Yz^h  
sort(data, IMPROVED_QUICK); ! BU)K'mj  
} 0ZAj=u@O  
private static String[] name={ 33:DH}  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7#;vG>]  
}; '#\D]5  
ba@ax3  
private static Sort[] impl=new Sort[]{ ps1YQ3Ep&  
new InsertSort(), 7J>Gd  
new BubbleSort(), x@P{l&:>  
new SelectionSort(), T+"f]v  
new ShellSort(), 8YY|;\F)J~  
new QuickSort(), Hv#q:R8  
new ImprovedQuickSort(), Q/_[--0&#  
new MergeSort(), V6iL5&  
new ImprovedMergeSort(), Z+s%;f;  
new HeapSort() =4C}{IL  
}; )J/HkOj"V  
mXjgs8 s  
public static String toString(int algorithm){ ic6L9>[  
return name[algorithm-1]; jigs6#  
} OKuD"   
B_3QQ tjAl  
public static void sort(int[] data, int algorithm) { QHf$f@bjI  
impl[algorithm-1].sort(data); "i'bTVs  
} $]d*0^J 6  
 vfvlB[  
public static interface Sort { U/MFhD(06  
public void sort(int[] data); Dxx;v.$  
} 90 { tIX  
t\U$8l_;  
public static void swap(int[] data, int i, int j) { wV <7pi  
int temp = data; ,-*iCs<  
data = data[j]; 2@@l{Y0f6  
data[j] = temp; fhpX/WE6  
} [p;*r)f2}  
} tR`S#rk  
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