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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。 5D2mZ/  
插入排序: J9OL>!J  
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package org.rut.util.algorithm.support; ,]nRnI^  
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import org.rut.util.algorithm.SortUtil; \F-n}Z  
/** 4f~sRubK  
* @author treeroot DaJ,( DJY  
* @since 2006-2-2 <T;V9(66  
* @version 1.0 *C0a,G4  
*/ 8EMBqhl  
public class InsertSort implements SortUtil.Sort{ cvo+{u$s  
K F_Uu  
/* (non-Javadoc) Thu_`QP^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~5h4 Gy)  
*/ =+b>d\7xG  
public void sort(int[] data) { ,X1M!'  
int temp; (X-( WMsqQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rk4KAX_[  
} ;Z`a[\i':  
} :3XvHL0rx  
} _'1 7C /  
Z,SV9 ~M  
} F_g(}wE# q  
Q)BSngW+  
冒泡排序: bcjh3WP  
YFPse.2$a  
package org.rut.util.algorithm.support; pdER#7Tq  
65JG#^)KaX  
import org.rut.util.algorithm.SortUtil; *0Z6H-Do,  
3 !8#wn  
/** (9ZW^flY  
* @author treeroot G_5{5Ar  
* @since 2006-2-2 Y0kcxpK/  
* @version 1.0 }!k?.(hpE  
*/ (T$cw(!  
public class BubbleSort implements SortUtil.Sort{ *3E3,c8{A  
[W{|94q  
/* (non-Javadoc) X Db%-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kTfRm^  
*/ X@}7 # Vt  
public void sort(int[] data) { .a :7|L#a  
int temp; GM9[ 0+u;  
for(int i=0;i for(int j=data.length-1;j>i;j--){ SP<Sv8Okj  
if(data[j] SortUtil.swap(data,j,j-1); \m}a%/  
} <}A6 )=T  
} N\&VJc  
} 2;*G!rE&*`  
} 0tL5t7/Gr  
d }fd^x/  
} Sz<:WY/(x  
Gey-8  
选择排序: p/Q< VV  
,mvFeo;@f  
package org.rut.util.algorithm.support; ,r~^<m  
g.Qn,l]X/p  
import org.rut.util.algorithm.SortUtil; 6Iv};f"Y  
h lc!}{$%8  
/** c^'bf_~-W  
* @author treeroot "~EAt$  
* @since 2006-2-2 9S17Lr*c  
* @version 1.0 x 9\{a  
*/ Z:,\FB_U  
public class SelectionSort implements SortUtil.Sort { \Gk}Fer  
U&:-Vf~&  
/* ME]7e^  
* (non-Javadoc) ;`c:Law4  
* qi7*Jjk>90  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j DEym&-  
*/ ZL0k  
public void sort(int[] data) { ^_3 $f  
int temp; 5wh(Qdib  
for (int i = 0; i < data.length; i++) { yx&}bu\  
int lowIndex = i; 87B$  
for (int j = data.length - 1; j > i; j--) { BR?DW~7J j  
if (data[j] < data[lowIndex]) { 42hG }Gt  
lowIndex = j; f% t N2k  
} 9[*P`*&  
} 3hBYx@jTO  
SortUtil.swap(data,i,lowIndex); RrrlfFms  
} 0Bp0ScE|FA  
} 7Dl^5q.|  
}id)~h_@  
} ,wg(}y'  
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Shell排序: <_pLmYI  
@XL49D12c  
package org.rut.util.algorithm.support; zA$ Y@f  
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import org.rut.util.algorithm.SortUtil; :.l\lj0Yf  
c[X6!_  
/** G.iQ\'1_h  
* @author treeroot MFO%F) 5  
* @since 2006-2-2 ;,TT!vea  
* @version 1.0 --TH6j"  
*/ jt323hHth  
public class ShellSort implements SortUtil.Sort{ fM:bXR2Y'  
kO^  
/* (non-Javadoc) 2,B^OZmw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \8a014  
*/ xJ:Am>%\^  
public void sort(int[] data) { w""u]b%:r  
for(int i=data.length/2;i>2;i/=2){ cdH`#X  
for(int j=0;j insertSort(data,j,i); 5oYeUy>N  
} H3d|eO4+W  
} WTt /y\'6  
insertSort(data,0,1); 0e]J2>  
} wod{C!  
c<cYX;O  
/** Ue,eEer  
* @param data 23p.g5hJi  
* @param j b+ZaZ\-y |  
* @param i "Ya ;&F.'  
*/ em^2\*sxpA  
private void insertSort(int[] data, int start, int inc) { WRAv>s9  
int temp; >[T6/#M  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); yfFe%8w_vw  
} .1J`>T?=Q  
} +U<Ae^V  
} ?W?n l:F  
B@\0b|  
} q4"^G:  
aG@GJ@w  
快速排序: >/@Q7V99{  
B1i'Mzm-4  
package org.rut.util.algorithm.support; \[+':o`LH  
Z Wx[@5  
import org.rut.util.algorithm.SortUtil; #vBSg  
R5uz<  
/** [ CU8%%7  
* @author treeroot 1_}k)(n  
* @since 2006-2-2 c No)LF  
* @version 1.0 ,<OS: ]  
*/ Wk-. dJ  
public class QuickSort implements SortUtil.Sort{ ND 8;1+3  
b_~KtMO  
/* (non-Javadoc) ' e x/IqbK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MD>E0p)  
*/ t `\l+L  
public void sort(int[] data) { F>@z&a}(  
quickSort(data,0,data.length-1); i~HS"n  
} mUb2U&6(  
private void quickSort(int[] data,int i,int j){ u8y('\(  
int pivotIndex=(i+j)/2; ^'sOWIzeiY  
file://swap W$" >\A0%  
SortUtil.swap(data,pivotIndex,j); yAel4b/}  
1&kf2\S  
int k=partition(data,i-1,j,data[j]); tE=$#  
SortUtil.swap(data,k,j); +#'QP#  
if((k-i)>1) quickSort(data,i,k-1); Xd~lifF  
if((j-k)>1) quickSort(data,k+1,j); 2b#> ~  
?* dfIc  
} $~A\l@xAG  
/** H{d/%}7[v  
* @param data U.W Mu%  
* @param i k}{K7,DM  
* @param j n^epC>a"b  
* @return (G"/C7q  
*/ KiNluGNt  
private int partition(int[] data, int l, int r,int pivot) { L=<,+m[!  
do{ u C`)?f*I  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W?12'EG}xa  
SortUtil.swap(data,l,r); z]i/hU  
} m%OX< T!  
while(l SortUtil.swap(data,l,r); #xrE^Txh  
return l; 1g|6,J  
} MP8s}  
GlXzH1wZ  
} U3c!*i  
yucbEDO.  
改进后的快速排序: >LR+dShG  
R&}{_1dj8  
package org.rut.util.algorithm.support; Z:MU5(Te  
=(5}0}j  
import org.rut.util.algorithm.SortUtil; QV%eTA  
zhwajc  
/** j7Lw( AJ  
* @author treeroot lG X_5R  
* @since 2006-2-2 v[?eL0Z  
* @version 1.0 *_yp]z"  
*/ h"Q&E'0d  
public class ImprovedQuickSort implements SortUtil.Sort { S#7.y~e\  
SRk-3:  
private static int MAX_STACK_SIZE=4096; X_I.f6v{  
private static int THRESHOLD=10; #+P)X_i`  
/* (non-Javadoc) ?DJ,YY9P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ( e(<4-&  
*/ %G~%:uJ5  
public void sort(int[] data) { =CO#Q$  
int[] stack=new int[MAX_STACK_SIZE]; "[ ]72PC  
af7\2 g3*  
int top=-1; ~E7=c3:"  
int pivot; r+Y]S-o:  
int pivotIndex,l,r; *W<g%j-a  
tZY(r {  
stack[++top]=0; wsfn>w?!V  
stack[++top]=data.length-1; q|ZQsFZ  
^S`c-N  
while(top>0){ qUp DmH  
int j=stack[top--]; = P {]3K  
int i=stack[top--]; R:DW>LB  
j6)@kW9x  
pivotIndex=(i+j)/2; V0 OT_F  
pivot=data[pivotIndex]; jvos)$;L-  
utwqP~  
SortUtil.swap(data,pivotIndex,j); ldm=uW  
NvlG@^&S  
file://partition  !.k  
l=i-1; y3C$%yv0  
r=j; [mk!] r  
do{ 0IjQqI  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "Mmvf'N  
SortUtil.swap(data,l,r); /!0{9F<  
} jCbxI^3A  
while(l SortUtil.swap(data,l,r); :j,e0#+sA  
SortUtil.swap(data,l,j); t%<d}QuHW  
zc-.W2"Hu  
if((l-i)>THRESHOLD){ J;BG/VI1  
stack[++top]=i; e c`3Qw  
stack[++top]=l-1; G@QZmuj&KH  
} |+i?FYA\  
if((j-l)>THRESHOLD){ xlaBOKa%  
stack[++top]=l+1; wXsA-H/`  
stack[++top]=j; QFf lx  
} dPRGL hWF  
e[8p/hId  
} "^ cn9AG{  
file://new InsertSort().sort(data); j^~WAWbFh  
insertSort(data); %@jv\J  
} Iih~rWJ  
/** yN~: 3  
* @param data Lw.N3!e[  
*/ '4qi^$|\  
private void insertSort(int[] data) { ~?{@0,$  
int temp; dKyX70Zy9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e]{X62]  
} aKC3T-  
} b9([)8  
} S\jN:o#b  
PRCr7f  
} {N$G|bm]u<  
rm4j8~Ef  
归并排序: Y&5h_3K;<  
8a1G0HRQ  
package org.rut.util.algorithm.support;  g=:C/>g  
`7|v  
import org.rut.util.algorithm.SortUtil; N|h}'p  
=`rESb[  
/** d&0^AvM@  
* @author treeroot ^@`dsll  
* @since 2006-2-2 Os1(28rl  
* @version 1.0 /5_!Y >W  
*/ RxkcQL/Le  
public class MergeSort implements SortUtil.Sort{ NPEs0|  
vV| u+v{  
/* (non-Javadoc) 9oY%v7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h7  >  
*/ p9 |r y+t  
public void sort(int[] data) { Rj% q)aw'  
int[] temp=new int[data.length]; }o? @  
mergeSort(data,temp,0,data.length-1); DP*[t8  
} 8\t~ *@"  
mY3x (#I  
private void mergeSort(int[] data,int[] temp,int l,int r){ m`-{ V<(M  
int mid=(l+r)/2; d7tH~9GX8  
if(l==r) return ; cX553&  
mergeSort(data,temp,l,mid); b07 MTDFH7  
mergeSort(data,temp,mid+1,r); Y] nY.5irL  
for(int i=l;i<=r;i++){ e2%Y8ZJG.  
temp=data; 4>>d "<}C  
}  >kK  
int i1=l; e ?H`p"l  
int i2=mid+1; w.Ft-RXA W  
for(int cur=l;cur<=r;cur++){ aC$hg+U$G  
if(i1==mid+1) .t0Q>:}&b  
data[cur]=temp[i2++]; ueYZM<],  
else if(i2>r) KaHjL&!  
data[cur]=temp[i1++]; Y9 , KOs  
else if(temp[i1] data[cur]=temp[i1++]; vh+Ih Gi  
else T.aY {Y  
data[cur]=temp[i2++]; h5ST`jZ  
} aBT|Q@Y.  
} \=4[v-3 H  
p}}o#a~V),  
} icHc!m?  
4RNB\D  
改进后的归并排序: y%\kgWV  
HkEfBQmh  
package org.rut.util.algorithm.support; Qg9 N?e{z  
}0|,*BkI m  
import org.rut.util.algorithm.SortUtil; KyNv)=x4c  
\ M8;CN  
/** }ruBbeQ  
* @author treeroot x2[A(O=  
* @since 2006-2-2 B9n$8QS  
* @version 1.0 IiIF4 pQ,  
*/ ~(%nnG6x  
public class ImprovedMergeSort implements SortUtil.Sort { S!k cC-7  
o6ec\v!l-  
private static final int THRESHOLD = 10; +PY LKyS>  
&aaXw?/zr  
/* ](@Tbm8  
* (non-Javadoc) S=ebht=  
* q3e %L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sim\+SL{#  
*/ }^^X-_XT  
public void sort(int[] data) { 0S;H`w_S  
int[] temp=new int[data.length]; INE8@}e  
mergeSort(data,temp,0,data.length-1); -Yy,L%E]F:  
} ;+`t[ go  
EV z>#GC  
private void mergeSort(int[] data, int[] temp, int l, int r) { pog*}@ OS  
int i, j, k; KE`}P<K&  
int mid = (l + r) / 2; ]4yWcnf  
if (l == r) B{lBUv(B  
return; V,fSn:8%M  
if ((mid - l) >= THRESHOLD) egxh  
mergeSort(data, temp, l, mid); sME3s-  
else )}1 J.>5  
insertSort(data, l, mid - l + 1); r%JJ5Al.S  
if ((r - mid) > THRESHOLD) hdp;/Qz&  
mergeSort(data, temp, mid + 1, r); S.aSNH<  
else r'uD|T H  
insertSort(data, mid + 1, r - mid); Oj6-  
YgC J s;  
for (i = l; i <= mid; i++) { \IbGNV`q  
temp = data; g>A*kY  
} 3G dWq*  
for (j = 1; j <= r - mid; j++) { WrQe'ny  
temp[r - j + 1] = data[j + mid]; c%yhODq/  
} [*Nuw_l  
int a = temp[l]; VChNDHiH  
int b = temp[r]; iVLfAN @  
for (i = l, j = r, k = l; k <= r; k++) { 61HU_!A8S  
if (a < b) { iF?4G^  
data[k] = temp[i++]; \L-o>O  
a = temp; eYMp@Cx  
} else { 0 Ji>dr n  
data[k] = temp[j--]; ^+^#KC8]W  
b = temp[j]; anjU3j  
} 8<z+hWX=4  
} 1~Zmc1]  
} 'kf]l=i[n  
E4 GtJ`{X  
/** Ds? @ LE|  
* @param data }9<pLk  
* @param l ~tWIVj{  
* @param i h5e(Avk  
*/ $014/IB  
private void insertSort(int[] data, int start, int len) { /-)\$T1d  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *JDQaWzBd  
} w5w,jD[  
} OOn{Wp  
} ov*?[Y7|~  
} U}<5%"!;  
E*'sk  
堆排序: Kur3Gf X  
]KdSwIbi  
package org.rut.util.algorithm.support; iqm]sC`  
VPoA,;Y"-  
import org.rut.util.algorithm.SortUtil; mD<- <]SYp  
#$2 {l,>  
/** n]^zIe^6  
* @author treeroot ul$k xc=N  
* @since 2006-2-2 e` 9d&"  
* @version 1.0 m r"b/oM{  
*/ Z:9xf:g *  
public class HeapSort implements SortUtil.Sort{ o{7wPwQ;*  
n@xC?D:t*  
/* (non-Javadoc) Oo^kV:.)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IcRA[ g  
*/ d$qivct  
public void sort(int[] data) { f]%:.N~1w  
MaxHeap h=new MaxHeap(); =jXBF.  
h.init(data); jYDpJ##Zb  
for(int i=0;i h.remove(); q{T [|(!  
System.arraycopy(h.queue,1,data,0,data.length); f?vbIc`  
} @lpo$lN0R  
Htl2CcZ  
private static class MaxHeap{ {o1 vv+i  
Z OJ<^t}  
void init(int[] data){ j5\z7  
this.queue=new int[data.length+1]; x7\b-EC  
for(int i=0;i queue[++size]=data; ]!CMo+  
fixUp(size); O(x1Ja,&  
} }huj%Pnk )  
} 3-x ;_  
 +~xY}  
private int size=0; 'u@,,FFz[K  
gQ90>P:  
private int[] queue; >NLG"[\  
rlxZ,]ul  
public int get() { FM$$0}X  
return queue[1]; jN))|eD0x  
} {txW>rZX  
kjAARW  
public void remove() { Z~R7 G  
SortUtil.swap(queue,1,size--); y5/frJ  
fixDown(1); 6mp8v`b  
} #+CH0Z  
file://fixdown WH|TdU$V  
private void fixDown(int k) { %Q,6sH#  
int j; 3.?G,%S5.$  
while ((j = k << 1) <= size) { `/ <y0H  
if (j < size %26amp;%26amp; queue[j] j++; Sc b'  
if (queue[k]>queue[j]) file://不用交换 uuHg=8(  
break; EzII!0 F  
SortUtil.swap(queue,j,k); 0?V{u`*  
k = j; 0zQ~'x  
} mIW8K ):  
} 75v7w  
private void fixUp(int k) { N+lhztYQ?  
while (k > 1) { eX`wQoV%  
int j = k >> 1; }2xgm9j<  
if (queue[j]>queue[k]) n_~u!Ky_P  
break; "w 7{,HP  
SortUtil.swap(queue,j,k); 5Z;iK(>IX  
k = j; v']Tusmg  
} V.w L  
} jk (tw-B  
]{Y7mpdB  
} <JUumrEo  
/]U),LbN  
} 8*zORz  
fQm3D%  
SortUtil: / R-1s  
wjtFZGx&  
package org.rut.util.algorithm; uNKf!\Y  
J497 >w[  
import org.rut.util.algorithm.support.BubbleSort; hMCf| e.UY  
import org.rut.util.algorithm.support.HeapSort; b=@H5XTZyK  
import org.rut.util.algorithm.support.ImprovedMergeSort; w{8O$4 w  
import org.rut.util.algorithm.support.ImprovedQuickSort; g)dKXsy(F  
import org.rut.util.algorithm.support.InsertSort; rX(Ol,&oP  
import org.rut.util.algorithm.support.MergeSort; E!A+J63zsw  
import org.rut.util.algorithm.support.QuickSort; B,V:Qs6"  
import org.rut.util.algorithm.support.SelectionSort; pk8`suZ  
import org.rut.util.algorithm.support.ShellSort; hZIbN9)8A  
L;\f^v(  
/** ]ZR}Pm/CA  
* @author treeroot dzk1!yy  
* @since 2006-2-2 /07iQcT(  
* @version 1.0 mX2X.ww(4  
*/ jXPf}{^  
public class SortUtil { rS>@>8k2,  
public final static int INSERT = 1; w`GjQIA  
public final static int BUBBLE = 2; zK_Q^M`  
public final static int SELECTION = 3; ''^2rF^  
public final static int SHELL = 4; \h>6k  
public final static int QUICK = 5; KzZfpdI92  
public final static int IMPROVED_QUICK = 6; ilRPV'S^  
public final static int MERGE = 7; /'4]"%i%3  
public final static int IMPROVED_MERGE = 8; bblEZ%  
public final static int HEAP = 9; t5CJG'!ql  
.Te GA;  
public static void sort(int[] data) { Skl:~'W.&|  
sort(data, IMPROVED_QUICK); kfY. 9$(d  
} xLdkeuL[%  
private static String[] name={ %MCJ%Ph  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &8;Fi2}(L  
}; &( ZEs c  
(I/ZI'Ydy  
private static Sort[] impl=new Sort[]{ U(+%iD60i  
new InsertSort(), g '+2bQ  
new BubbleSort(), : ]JMsa6  
new SelectionSort(), )Vz=:.D  
new ShellSort(), 3qQ}U}-;|  
new QuickSort(), _RNP_$a  
new ImprovedQuickSort(), Py`7)S  
new MergeSort(), |Ed?s  
new ImprovedMergeSort(), C%#w1k  
new HeapSort() #/"Tb ^c9  
}; C>Q|"Vf2  
%H[~V f?d  
public static String toString(int algorithm){ e/uLBZ  
return name[algorithm-1]; }#q0K  
} DzbcLg%:W  
SJ}PV:x  
public static void sort(int[] data, int algorithm) { C).+h7{nd  
impl[algorithm-1].sort(data); ~OMo$qt`lP  
} |H(i)yu"5'  
(M?VB*sm0  
public static interface Sort { ov5g`uud  
public void sort(int[] data); )gx*;z@  
} $a|>>?8  
5g`J}@"k  
public static void swap(int[] data, int i, int j) { #Vhr 1;j  
int temp = data; >guX,hx^  
data = data[j]; 8Ow#W5_3|  
data[j] = temp; dy~M5,zn  
} ;Kh[6{W  
} 8%`h:fE  
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