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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。 \jyjQ,v)  
插入排序: ,r=re!QI7  
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package org.rut.util.algorithm.support; , T\-;7  
&>(gt<C$  
import org.rut.util.algorithm.SortUtil; 5 y   
/** 6Y1J2n"  
* @author treeroot :)IV!_>'d  
* @since 2006-2-2 (a.1M8v+Sg  
* @version 1.0 cy|%sf`  
*/ SfW}"#L>5  
public class InsertSort implements SortUtil.Sort{ Qz+sT6js-  
jl}$HEI5m}  
/* (non-Javadoc) d(7NO;S8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :l,OalO  
*/ h^oH^moq<  
public void sort(int[] data) { #. ct5  
int temp; 1fFj:p./l_  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LjaGyj>)  
} y+U83a[L*  
} q[ d)e6  
} y-9+a7j  
+xp]:h|  
} | o0RP|l  
*C6D3y  
冒泡排序: 51by  
~W03{9(Vp8  
package org.rut.util.algorithm.support; 6|!NLwa  
{38\vX,I(w  
import org.rut.util.algorithm.SortUtil; XErUS80  
?Elg?)os  
/** e1/sqXWo  
* @author treeroot %8mm Hh  
* @since 2006-2-2 + E5=$`  
* @version 1.0 h*w6/ZL1  
*/ T3N"CUk  
public class BubbleSort implements SortUtil.Sort{ zO~9zlik  
+e P.s_t  
/* (non-Javadoc) por/^=e{Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qX#MV>1  
*/ s_ bR]G  
public void sort(int[] data) { dqc1 q:k?$  
int temp; w? LrJ37u  
for(int i=0;i for(int j=data.length-1;j>i;j--){ *:hy Y!x  
if(data[j] SortUtil.swap(data,j,j-1); `rb>K  
} 4(cJ^]wb^  
} g "hJ{{<  
} vl:J40Kfn  
} 'bu)M1OLi  
,^$ |R32  
} (\,BxvhG=  
osH Cg  
选择排序: }Hcx=}j  
^6;V}2>v}  
package org.rut.util.algorithm.support; 1;lmu]I>)  
@T:fa J5\'  
import org.rut.util.algorithm.SortUtil; k<j"~S1  
nJZ6? V  
/** "y;bsZBd"  
* @author treeroot F{m{d?:OA  
* @since 2006-2-2 1|| +6bRP  
* @version 1.0 z[nS$]u  
*/ 0g=`DSC<(  
public class SelectionSort implements SortUtil.Sort { E167=BD9<  
e3[:D5  
/* T~xwo  
* (non-Javadoc) 3 hKBc0  
* oxz{ ejd{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kc$)^E7  
*/ +wO#'D  
public void sort(int[] data) { pz|'l:v^  
int temp; E JK0  
for (int i = 0; i < data.length; i++) { TNwK da+  
int lowIndex = i; p(JlvJjo  
for (int j = data.length - 1; j > i; j--) { -db75=  
if (data[j] < data[lowIndex]) { \3XqHf3|o  
lowIndex = j; ^%>kO,  
} m D58T2 Z  
} =L-I-e97@  
SortUtil.swap(data,i,lowIndex); F<&!b2)ML  
} , YW|n:X  
} ;xYNX  
s!+ pL|  
} ?]O7Ao  
e}yX_Z'P<  
Shell排序: Vw{*P2v)  
,IHb+K  
package org.rut.util.algorithm.support; 0?DC00O  
'LE"#2Hu  
import org.rut.util.algorithm.SortUtil; ';B#Gx  
,&^3Z  
/** iw9Q18:I}  
* @author treeroot 5F"|E-;  
* @since 2006-2-2 =aG xg57  
* @version 1.0 - y AQ  
*/ Q \hY7Xq'  
public class ShellSort implements SortUtil.Sort{ s)J(/  
p0:kz l4$  
/* (non-Javadoc) OO) ~HV4\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +IFw_3$  
*/ 'jg3  
public void sort(int[] data) { #Pk$L+C  
for(int i=data.length/2;i>2;i/=2){ YDJ4c;37  
for(int j=0;j insertSort(data,j,i); i[jJafAcN  
} XXZaKgsq  
} 6xK[34~ 6  
insertSort(data,0,1); <Zb/  
} H}}$V7]^),  
O[^%{'  
/** oqd;6[%G  
* @param data G6 0S|d  
* @param j YwEpy(}hJm  
* @param i %ysZ5:X  
*/ yay<GP?  
private void insertSort(int[] data, int start, int inc) { YZf6|  
int temp; o{qr!*_3  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [Nm4sI11  
} Sjj>#}U  
} "/Pjjb:2  
} =T?}Nt  
/phX'xp  
} -Apc$0ZsN  
7cDU2l  
快速排序: {7hLsK[])  
9pn>-1NJ  
package org.rut.util.algorithm.support; BaI $S>/Q  
WsU)Y&  
import org.rut.util.algorithm.SortUtil;  mEG6  
 uF|3/x=  
/** K)tQ]P  
* @author treeroot "p&Y^]  
* @since 2006-2-2 2&mGT&HAVA  
* @version 1.0 6RO(]5wX  
*/ x&sI=5l  
public class QuickSort implements SortUtil.Sort{ S{t+>/  
IY'=DePd  
/* (non-Javadoc) `>Tu|3%\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f"G-  
*/ CvSIV7zYo  
public void sort(int[] data) { 8`>h}Q$  
quickSort(data,0,data.length-1); 5zJj]A  
} & F:IIo7  
private void quickSort(int[] data,int i,int j){ "Mw[P [w*  
int pivotIndex=(i+j)/2; 7"F*u :  
file://swap Ks^6.)  
SortUtil.swap(data,pivotIndex,j); (_kp{0r#  
H(c72]@Vg  
int k=partition(data,i-1,j,data[j]); 6k{2 +P  
SortUtil.swap(data,k,j); ,_aM`%q?Fj  
if((k-i)>1) quickSort(data,i,k-1); <P[T!gST  
if((j-k)>1) quickSort(data,k+1,j); bK"SKV  
1d"Z>k:mn  
} XgN` 7!Z  
/** zLs|tJOVp  
* @param data @+vXMJ$  
* @param i ,j;m!V  
* @param j )UgX3+@  
* @return 6fH@wQ"wN  
*/ ^H{R+}  
private int partition(int[] data, int l, int r,int pivot) { (/!r(#K0,'  
do{ ,[S+T.Cu  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~LJY6A@y  
SortUtil.swap(data,l,r); }VS3L_ ;}/  
} oF9 -&  
while(l SortUtil.swap(data,l,r); Va,<3z%O<  
return l; lt^\  
} oVA?J%EK  
N7'OPTKt&  
} h^,8rd  
1wzqGmjmt  
改进后的快速排序: (fNUj4[  
v 8T$ &-HJ  
package org.rut.util.algorithm.support; ;{ i'#rn{  
0nn okN^  
import org.rut.util.algorithm.SortUtil; YBYZ=,"d  
K 8n4oz#z  
/** t*z~5_/  
* @author treeroot 'E/*d2CDM(  
* @since 2006-2-2 m }a|FS  
* @version 1.0 Y$N)^=7  
*/ />¬$>  
public class ImprovedQuickSort implements SortUtil.Sort { B]m@:|Q  
M;cO0UIwO  
private static int MAX_STACK_SIZE=4096; 0&qr  
private static int THRESHOLD=10; bwVPtu`  
/* (non-Javadoc) yKYUsp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5>3}_  
*/ d(vsE%/!  
public void sort(int[] data) { 5w%_$x  
int[] stack=new int[MAX_STACK_SIZE]; =U8a ?0  
rg0m a  
int top=-1; sw A+f   
int pivot; bCref$|  
int pivotIndex,l,r; 3iw{SEY  
/? r?it  
stack[++top]=0; >AoK/(yL.  
stack[++top]=data.length-1; A+y  
;\EiM;Q]  
while(top>0){ CTWn2tpW  
int j=stack[top--]; t+5E#!y  
int i=stack[top--]; 8N:owK  
&_JD)mM5  
pivotIndex=(i+j)/2; 4}_O`Uxh  
pivot=data[pivotIndex]; Gl1jxxd  
o]nw0q?  
SortUtil.swap(data,pivotIndex,j); `cPywn@uGZ  
rl9. ]~  
file://partition ?$f)&O  
l=i-1; x~.:64  
r=j; [ W2fd\4  
do{ %6AW7q t  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); KD/V aN  
SortUtil.swap(data,l,r); R'kyrEO  
} (D@A74q\'  
while(l SortUtil.swap(data,l,r); d,8mY/S>w  
SortUtil.swap(data,l,j); e[sK@jX6  
|F9z,cc"  
if((l-i)>THRESHOLD){ bSVlk`  
stack[++top]=i; :2njp%  
stack[++top]=l-1; +?p.?I  
} 4w#``UY)'  
if((j-l)>THRESHOLD){ Yvn\x ph3  
stack[++top]=l+1; +C1QY'>I  
stack[++top]=j; _qb Ih  
} SQeRSz8bK4  
YF+n b.0.  
} dw.F5?j`b  
file://new InsertSort().sort(data); n@ w^ V   
insertSort(data); sA gKg=)  
} P&Pj>!T5  
/** ]skkoM  
* @param data ?"z]A7<Hj  
*/ 8/0Y vh  
private void insertSort(int[] data) { *3T| M@Y  
int temp; h"H2z1$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )DYI .  
} "t^URp3  
} b;)~wU=  
} 3!5Ur&  
_fZZ_0\Q  
} WK="J6K5  
w.& 1%X(k  
归并排序: ',GS#~  
4t)%<4  
package org.rut.util.algorithm.support; %pXAeeSY`;  
}(egMx;"3J  
import org.rut.util.algorithm.SortUtil; {O|'U'  
s?ko?qN(  
/** 0rGSH*(  
* @author treeroot ' B  
* @since 2006-2-2 ICAH G7,  
* @version 1.0 Me6+~"am/  
*/ .S(,o.  
public class MergeSort implements SortUtil.Sort{ ~+Z{Q25R  
:VF<9@t  
/* (non-Javadoc) lg047K   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OgF+O S  
*/ jE#O>3+.  
public void sort(int[] data) { gKOOHUCb  
int[] temp=new int[data.length]; ,;M4jc {  
mergeSort(data,temp,0,data.length-1); nenU)*o  
} ~EK'&Y"1  
lo'W1p  
private void mergeSort(int[] data,int[] temp,int l,int r){ q5>v'ZSo  
int mid=(l+r)/2; = waA`Id  
if(l==r) return ; ~tOAT;g}q  
mergeSort(data,temp,l,mid);  iD= p\  
mergeSort(data,temp,mid+1,r); >Z1q j>  
for(int i=l;i<=r;i++){ \6;=$f/?t  
temp=data; 4mn&4e  
} y>*xVK{D  
int i1=l; 6\61~u~  
int i2=mid+1; I |# 5NE6  
for(int cur=l;cur<=r;cur++){ W+*5"h  
if(i1==mid+1) UX]L;kI  
data[cur]=temp[i2++]; F#|: `$ t  
else if(i2>r) gIA@l `"  
data[cur]=temp[i1++]; sBV 4)xM  
else if(temp[i1] data[cur]=temp[i1++]; w&xDOyW]  
else O$IjN x  
data[cur]=temp[i2++]; 3BpZX`l*p  
} au,t%8AC  
} ^<X@s1^#  
<L&m4O#|  
} y<b{Ji e  
/x{s5P 3  
改进后的归并排序: Py`N4y ~  
erO>1 ,4S  
package org.rut.util.algorithm.support; GWvH[0  
9}z0J  
import org.rut.util.algorithm.SortUtil; L.]$6Q0  
&sF^Fgg{  
/** G<M:Ak+~  
* @author treeroot s&GJW@ |  
* @since 2006-2-2 nk3y"ne7  
* @version 1.0 *Sh^ J+j  
*/ nNXgW  
public class ImprovedMergeSort implements SortUtil.Sort { *'"^NSJ  
<, 3ROo76  
private static final int THRESHOLD = 10; c^`]`xiX  
%7O?JI [  
/* A{B/lX)  
* (non-Javadoc) XNgDf3T  
* w>b-} t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JJRK7\~$  
*/ |a{Q0:  
public void sort(int[] data) { )/t?!T.[  
int[] temp=new int[data.length]; C ;(t/zh  
mergeSort(data,temp,0,data.length-1); Ged[#Q  
} lDmtQk-SN  
$`Ix:gi  
private void mergeSort(int[] data, int[] temp, int l, int r) { fL]Pztsk+  
int i, j, k; l|5fE1K9U  
int mid = (l + r) / 2; I5h[%T  
if (l == r) [%&ZPJT%i  
return; @]bPVG?d  
if ((mid - l) >= THRESHOLD) g:0#u;j^7  
mergeSort(data, temp, l, mid); _j_x1.l  
else ' H7x L  
insertSort(data, l, mid - l + 1); !;_H$r0  
if ((r - mid) > THRESHOLD) `yF`x8  
mergeSort(data, temp, mid + 1, r); !z{-?o/  
else z4E|Ai  
insertSort(data, mid + 1, r - mid); kF>o.uSV  
{)AMwq  
for (i = l; i <= mid; i++) { 4~U'TE @  
temp = data; jmg!Ml  
} pKS {6P  
for (j = 1; j <= r - mid; j++) { mXUYQ 82  
temp[r - j + 1] = data[j + mid]; -Z-IF#%  
} 0kDK~iT  
int a = temp[l]; Lr`1TH,  
int b = temp[r]; DQwGUF'(  
for (i = l, j = r, k = l; k <= r; k++) { y$<Vha  
if (a < b) { ttXjn  
data[k] = temp[i++]; L,; D@Xi  
a = temp; <W]g2>9o9  
} else { ]; %0qb  
data[k] = temp[j--]; KsrjdJx, '  
b = temp[j]; ^*~;k|;&  
} n4lutnF  
} |j3'eW&=  
} nADX0KI  
!`bio cA  
/** ,7XtH>2s  
* @param data SR*wvQnOx  
* @param l H'F6$ypoS  
* @param i >%E([:$A  
*/ m0{!hF[^  
private void insertSort(int[] data, int start, int len) { ) _ I,KEe  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5d@t7[]  
} ()sTb>L  
} JY!l!xH(6  
} 7=]i~7uy  
} flgRpXt  
+\Q?w?DE|  
堆排序: m*X[ Jtr  
'B0{U4?   
package org.rut.util.algorithm.support; |w}xl'>q  
{YUIMd!Y  
import org.rut.util.algorithm.SortUtil; [7m1Q<  
ny-7P;->8  
/** I]!^;))  
* @author treeroot d2s OYCKe  
* @since 2006-2-2 g]UBZ33y  
* @version 1.0 ^TB>.c@`*  
*/ %r)avI  
public class HeapSort implements SortUtil.Sort{ F_uY{bg  
3?E8\^N\n  
/* (non-Javadoc) j]0^y}5f+s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -G,^1AL>  
*/ [Pe#kzLX  
public void sort(int[] data) { $(Ugtimdv  
MaxHeap h=new MaxHeap(); W0jZOP5_.$  
h.init(data); 7kKy\W  
for(int i=0;i h.remove(); L}#0I+Ml7  
System.arraycopy(h.queue,1,data,0,data.length); 0N=X74  
} u9=SpgB#  
f`>/ H!<2  
private static class MaxHeap{ "!K'A7.^  
|+ge8uu?C  
void init(int[] data){ <\zCpkZ'B  
this.queue=new int[data.length+1]; D}3XFuZs_  
for(int i=0;i queue[++size]=data; 6a}"6d/sTL  
fixUp(size); $>U # W:  
} TO,rxf  
} `IINq{Zk  
FI8Oz,  
private int size=0; A$g+K,.l  
[~D|peM3  
private int[] queue; :`) ~-`_  
*=Z26  
public int get() { PN+G:Qv  
return queue[1]; hl&-\dc+  
} g/=K.  
t0:AScZY   
public void remove() { 6I_Hd>4  
SortUtil.swap(queue,1,size--); N?dvuB  
fixDown(1); {5*|C-WWtG  
} bU 63X={  
file://fixdown 0^'B3$>  
private void fixDown(int k) { 0i[zup  
int j; \bCX=E-  
while ((j = k << 1) <= size) { =rPrPb  
if (j < size %26amp;%26amp; queue[j] j++; Kt>X3m,  
if (queue[k]>queue[j]) file://不用交换 @&1Wy p  
break; 9@ $,oM=  
SortUtil.swap(queue,j,k); ^0W(hA  
k = j; 52zGJ I*  
} zm9TvoC%}  
} CBf7]n0H  
private void fixUp(int k) { +5v}q.:+  
while (k > 1) { #$vRJ#S}U  
int j = k >> 1; &@"]+33  
if (queue[j]>queue[k]) ?B.~ AUN  
break; G)>W'yxQ  
SortUtil.swap(queue,j,k); 1gO2C $  
k = j; N12:{U  
} A{o'z_zC  
} uQLlA&I"  
{mE! Vf  
} p<WFqLe(":  
7=4A;Ybq  
} VVWM9x  
RaSz>-3d  
SortUtil: e2$]g>  
.V6-(d  
package org.rut.util.algorithm; E& 36H  
XM Vq-8B0  
import org.rut.util.algorithm.support.BubbleSort; [AEBF2OIv  
import org.rut.util.algorithm.support.HeapSort; TY;U2.Ud  
import org.rut.util.algorithm.support.ImprovedMergeSort; NCA {H^CL  
import org.rut.util.algorithm.support.ImprovedQuickSort; FqA3  {  
import org.rut.util.algorithm.support.InsertSort; D y6$J3 r  
import org.rut.util.algorithm.support.MergeSort; N$?cX(|7  
import org.rut.util.algorithm.support.QuickSort; !Q-wdzsp?  
import org.rut.util.algorithm.support.SelectionSort; V9x8R  
import org.rut.util.algorithm.support.ShellSort; $mco0 %$  
zvv:dC/p<  
/** )He#K+[}^4  
* @author treeroot fm1X1T.  
* @since 2006-2-2 %R0v5=2'  
* @version 1.0 qUhRu>   
*/ . ,NB( s`  
public class SortUtil { KiLvI,9y  
public final static int INSERT = 1; z)F#u:t  
public final static int BUBBLE = 2; 1H:ea7YVU  
public final static int SELECTION = 3; oL/o*^  
public final static int SHELL = 4; (U.**9b;  
public final static int QUICK = 5; Tc ZnmN  
public final static int IMPROVED_QUICK = 6; w'Z!;4E0  
public final static int MERGE = 7; )&W|QH=AI  
public final static int IMPROVED_MERGE = 8; ^>~dlS  
public final static int HEAP = 9; !^U6Z@&/R  
7INk_2  
public static void sort(int[] data) { >3;^l/2c  
sort(data, IMPROVED_QUICK); ](r ^.k,R  
} OsW"CF2  
private static String[] name={ HOYq?40.R  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5!fSW2N  
}; #G _/.h@  
x;$|#]+  
private static Sort[] impl=new Sort[]{ <Mgf]v.QS  
new InsertSort(), ~] =?b)B  
new BubbleSort(), ||TtNH  
new SelectionSort(), [h}K$q  
new ShellSort(), vW.%[]  
new QuickSort(), %u]6KrG18b  
new ImprovedQuickSort(), 3 %(Y$8U  
new MergeSort(), EHf)^]Z  
new ImprovedMergeSort(), sV0Z  
new HeapSort() #!!AbuhzK{  
}; >.dHt\  
993d/z|DX  
public static String toString(int algorithm){ Y4~vC[$ x'  
return name[algorithm-1]; 3\!F\tqD \  
} \3NS>v[1  
I"!'AI-  
public static void sort(int[] data, int algorithm) { ":WYcaSi  
impl[algorithm-1].sort(data); *d*oS7  
} ;R1B9-,  
l[n@/%2  
public static interface Sort { ^JhFI*  
public void sort(int[] data); SR*Gqx  
} QJ4AL3 ^6  
HY;oy(  
public static void swap(int[] data, int i, int j) { 6c\DJD  
int temp = data; i^%-aBZ  
data = data[j]; < tQc_  
data[j] = temp; l=Wd,$\  
} \ZnN D1A  
} IlHY%8F{  
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