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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。 q_<*esZ,  
插入排序: h7;bclU  
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package org.rut.util.algorithm.support; @("}]/O V:  
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import org.rut.util.algorithm.SortUtil; ^+R:MBK  
/** *mBJ? { !  
* @author treeroot x7RdZC  
* @since 2006-2-2 hxC!+ArVe  
* @version 1.0 M0-,M/]l  
*/ QMk+RM8U  
public class InsertSort implements SortUtil.Sort{  yu ,h\  
&!y]:CC{  
/* (non-Javadoc) kDB iBNdB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m]IysyFFK  
*/ \,sg)^w@  
public void sort(int[] data) { _a+ICqR  
int temp; ex?\ c"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RP(/x+V  
} ewB!IJxh  
} 8,o17}NY,  
} 3AlqBXE"Z<  
MFg'YA2/  
} C%ytkzG_  
5@XV6  
冒泡排序: S;A)C`X&  
mjEs5XCC"  
package org.rut.util.algorithm.support; vv 7+ >%  
m1.B\~S3  
import org.rut.util.algorithm.SortUtil; jxy1  
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/** 5#_tE<uM  
* @author treeroot k|O,1  
* @since 2006-2-2 H2Eb\v`#  
* @version 1.0 gKL1c{BV  
*/ [xpQH?  
public class BubbleSort implements SortUtil.Sort{ M^H90GN)X  
3:|-#F*k{  
/* (non-Javadoc) ]@SU4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]0D9N"  
*/ u fw cF*  
public void sort(int[] data) { W3LP ~  
int temp; D{AFL.r{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4YJ=q% G  
if(data[j] SortUtil.swap(data,j,j-1); {rPk3  
} /#yA%0=w  
} Q @2(aR  
} A/Khk2-:  
} wO"GtVd  
i<u9:W  
} *?8RXer  
g8yN% )[  
选择排序: O3!d(dY=_  
K&UE0JO'  
package org.rut.util.algorithm.support; B <+K<,S  
<lOaor c  
import org.rut.util.algorithm.SortUtil; (^H5EeGV{  
m1e b8yX  
/** 9bn2UiJ k  
* @author treeroot ;,0lUcV  
* @since 2006-2-2 \n@V-b  
* @version 1.0 !"! i i$@  
*/ /S/aUvN  
public class SelectionSort implements SortUtil.Sort { [A_r1g&_  
oP]L5S&A  
/* ogeRYq,g  
* (non-Javadoc) S+FQa7k  
* G&o64W;-s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z{6 YC~  
*/ 2cjEex:&  
public void sort(int[] data) { Bn-J_-%M  
int temp; +a]j[#  
for (int i = 0; i < data.length; i++) { uMDtdC8  
int lowIndex = i; GEtbs+[  
for (int j = data.length - 1; j > i; j--) { SOH%Q_  
if (data[j] < data[lowIndex]) { d~<QAh#rG  
lowIndex = j; bm}+}CJ@#0  
} /Ri,>}n  
} 8ath45G@  
SortUtil.swap(data,i,lowIndex); NV#')+Ba  
} <9\,QR)  
} 01nsdZ-  
-]QguZE  
} C<t RU5|  
,xj3w#`zaf  
Shell排序: vfXJYw+6_  
n{{ P 3f  
package org.rut.util.algorithm.support; }Z-I2 =]  
C|$L6n>DR6  
import org.rut.util.algorithm.SortUtil; /:Y9sz uW`  
F; a3  
/** l7Y8b`  
* @author treeroot i>"dBJh]b  
* @since 2006-2-2 v?%3~XoH  
* @version 1.0 .M+v?A d  
*/ &Y=.D:z<  
public class ShellSort implements SortUtil.Sort{ 3`rIV*&_{  
eKJ:?Lxv;  
/* (non-Javadoc) M,JA;a, _  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &gWiu9WbS  
*/ !u%9;>T7  
public void sort(int[] data) { Oc^m_U8>^  
for(int i=data.length/2;i>2;i/=2){ 6oA~J]<  
for(int j=0;j insertSort(data,j,i); 1C'P)f28  
} bx7\QU+  
} WQ.i$ID/  
insertSort(data,0,1); 9ET/I$n  
} G)~MbesJ  
:;_#5  
/** u0'i!@795  
* @param data /4H[4m]I  
* @param j  6s5b$x  
* @param i ,$BgR2^  
*/ ;24'f-Eri  
private void insertSort(int[] data, int start, int inc) { -s89)lUkS  
int temp; CfY7<o1>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); V*~423  
} X/wmKi  
} C{)HlOW  
} FbBX}n  
|f3U%2@  
} [%t3[p<)O  
enPLaiJ'|q  
快速排序: 94+/wzWvi  
W'V@  
package org.rut.util.algorithm.support; >"bnpYSe  
-+' #*V  
import org.rut.util.algorithm.SortUtil; } m6\C5  
5=m3J !?  
/** +Tp%5+E  
* @author treeroot a(5y>HF  
* @since 2006-2-2 EFwL.'Fh  
* @version 1.0 W8x[3,gT  
*/ v#-E~;C cC  
public class QuickSort implements SortUtil.Sort{ @?Fx  
^ePsIl1E  
/* (non-Javadoc) aSTFcz"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ny B&uf  
*/ y]J3h Ks  
public void sort(int[] data) { hMz&JJ&B  
quickSort(data,0,data.length-1); L!&$c&=xf  
} m]1!-`(*  
private void quickSort(int[] data,int i,int j){ Kc-Y  
int pivotIndex=(i+j)/2; Gxo# !  
file://swap n+X1AOE[L  
SortUtil.swap(data,pivotIndex,j); fMyE&#}z  
v8>!Gft  
int k=partition(data,i-1,j,data[j]); o|0 '0P  
SortUtil.swap(data,k,j); Vk WO}  
if((k-i)>1) quickSort(data,i,k-1); ]u;GNz}?  
if((j-k)>1) quickSort(data,k+1,j); k3C"  
Pf{`/UlD  
} u\:rY)V  
/** @c0n2 Xcr  
* @param data (lieiye^  
* @param i mZ~mf->%  
* @param j 2|$lk8/,  
* @return ,zG<7~m  
*/ 8znj~7}#  
private int partition(int[] data, int l, int r,int pivot) { z2.*#xTZn  
do{ `(!W s\:  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); O1|B3M[P  
SortUtil.swap(data,l,r); G&.d)NfE  
} jT{f<P0  
while(l SortUtil.swap(data,l,r); Lr wINVa  
return l; wInY7u Bd!  
} Is<x31R  
>1m)%zt  
} xnT3^ #-h  
" \`BPN  
改进后的快速排序: W0C{~|e  
o*-h%Z.  
package org.rut.util.algorithm.support; N4A&"1d&  
Sy4 mZ}:  
import org.rut.util.algorithm.SortUtil; a5X`jo  
W^003*m~~K  
/** Q^[e/U,  
* @author treeroot FPvuzBJ  
* @since 2006-2-2 (%6(5,   
* @version 1.0 Z@;jIH4 (  
*/ 2]2{&bu  
public class ImprovedQuickSort implements SortUtil.Sort { Akv(} !g  
lj4%(rB=  
private static int MAX_STACK_SIZE=4096; bd,Uz% o_  
private static int THRESHOLD=10; ]bs+:  
/* (non-Javadoc) ht2 f-EKf{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /3OC7!~;fM  
*/ 7WgIhQ~  
public void sort(int[] data) { n?zbUA#  
int[] stack=new int[MAX_STACK_SIZE]; $Z,i|K;  
3fm;r5  
int top=-1; '`9%'f)  
int pivot; aB=vu=hF  
int pivotIndex,l,r; U)u\1AV5  
a#YuKh?  
stack[++top]=0; ;I[ht  
stack[++top]=data.length-1; :!(YEF#}  
dVPq%[J2  
while(top>0){ >g>f;\mD7$  
int j=stack[top--]; )Y=w40Yzd  
int i=stack[top--]; C  usVW  
?@3#c  
pivotIndex=(i+j)/2; /&*m1EN#o  
pivot=data[pivotIndex]; v&p,Clt-2  
kw 6cFz  
SortUtil.swap(data,pivotIndex,j); &7$,<9.  
Y0@'za^y  
file://partition "kcpA#uD|  
l=i-1; #.<*; rB  
r=j; o G (0i  
do{ w 9G_>+?E  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); f0/jwfL  
SortUtil.swap(data,l,r); JX2mTQ  
} Fl B, (Cm  
while(l SortUtil.swap(data,l,r); ;3 G~["DA  
SortUtil.swap(data,l,j); $?[1#%  
_=o1?R  
if((l-i)>THRESHOLD){ "L9C  
stack[++top]=i; N|UBaPS|o  
stack[++top]=l-1; 0q:(-z\S4  
} t9?R/:B%  
if((j-l)>THRESHOLD){ [SCw<<l<  
stack[++top]=l+1; hO^&0?  
stack[++top]=j; hZp=BM"bJ  
} 8]sTX9  
` %FIgE^  
} }V\P,ck  
file://new InsertSort().sort(data); di8W2cwz  
insertSort(data);  ]# Y|   
} /d{glOk  
/** QN)/,=#  
* @param data 8W19#?7>B  
*/ T [i7C3QS  
private void insertSort(int[] data) { M,.b`1-w  
int temp; jz|Wj  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ybD{4&ZE  
} (! xg$Kz@  
} )$ ofl%+  
} aEcktg6h  
i!CKA}",  
} &_< VZS  
OT-n\sL$  
归并排序: RY\{=f  
KU1+<OCh  
package org.rut.util.algorithm.support; b}ySZlmy  
cxtLy&C  
import org.rut.util.algorithm.SortUtil; h g%@W  
j~+[uzW98  
/** ?R|fS*e2EB  
* @author treeroot )m|X;eEo  
* @since 2006-2-2 *\=2KIF'  
* @version 1.0 mtSNl|O&{  
*/ 0MwG}|RC  
public class MergeSort implements SortUtil.Sort{ XX]5T`D  
^m6k@VM  
/* (non-Javadoc) 9F2w.(m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c*y$bf<  
*/ LVPt*S=/  
public void sort(int[] data) { ke3HK9P;  
int[] temp=new int[data.length]; - XE79 fQ  
mergeSort(data,temp,0,data.length-1); /2g)Z!&+L  
} %k/ k]: s  
iYO wB'z  
private void mergeSort(int[] data,int[] temp,int l,int r){ (t]lP/  
int mid=(l+r)/2; E[)7tr  
if(l==r) return ; j[$B\H  
mergeSort(data,temp,l,mid); >uBV  
mergeSort(data,temp,mid+1,r); |y{; |K  
for(int i=l;i<=r;i++){ ~[ d=s  
temp=data; '+ o:,6  
} Fpj6Atk  
int i1=l; pRQ fx^ On  
int i2=mid+1; !A'`uf4u  
for(int cur=l;cur<=r;cur++){ zCKy`u .  
if(i1==mid+1) |1dEs,z\  
data[cur]=temp[i2++]; g5kYyE  
else if(i2>r) OmTZ-*N  
data[cur]=temp[i1++]; w\"n!^ms  
else if(temp[i1] data[cur]=temp[i1++]; eh({K;>  
else ]C}u- B746  
data[cur]=temp[i2++]; HI"!n$p  
} 2x<Qt2"  
} BiHiVhD_  
&=s|  
} 6e$sA (a=i  
9B!im\]O  
改进后的归并排序: >wg9YZ~8  
}@ O|RkY  
package org.rut.util.algorithm.support; O84v*=uA  
!1a|5 xrn  
import org.rut.util.algorithm.SortUtil; b'Fx),  
(ybtXoQs  
/** br34Eh  
* @author treeroot O?C-nw6kP  
* @since 2006-2-2 "oE^R?m  
* @version 1.0 D,}'E0  
*/ $nGbT4sc  
public class ImprovedMergeSort implements SortUtil.Sort { Z ,|1G6f@  
f_re"d 3u  
private static final int THRESHOLD = 10; 5{R#h :  
d I#8CO  
/* M5cOz|j/*R  
* (non-Javadoc) `_J^g&y~  
* b2/N H1A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :f?,]|]+-  
*/ SQ~N X)  
public void sort(int[] data) { a`EGx{q(  
int[] temp=new int[data.length]; :|n>H+Y  
mergeSort(data,temp,0,data.length-1); X%4uShM  
}  `5k6s,  
%vf2||a$BS  
private void mergeSort(int[] data, int[] temp, int l, int r) { v GR \GFm  
int i, j, k; 6mI_Q2  
int mid = (l + r) / 2; wZ]BY;  
if (l == r) .gM>FUH3L  
return; e_>rJWI}  
if ((mid - l) >= THRESHOLD) o-Q]Dk1W  
mergeSort(data, temp, l, mid); lJ2|jFY9  
else xu%! b0  
insertSort(data, l, mid - l + 1); [}9XHhY1O=  
if ((r - mid) > THRESHOLD) a O"nD_7  
mergeSort(data, temp, mid + 1, r); h 0QYoDvbC  
else ctc`^#q  
insertSort(data, mid + 1, r - mid); lry& )G=5  
D_yY0rRM  
for (i = l; i <= mid; i++) {  :kp  
temp = data; %|D\j-~  
} ;G4HMtL  
for (j = 1; j <= r - mid; j++) { |7S4;  
temp[r - j + 1] = data[j + mid]; 7kX7\[zN  
} 2vh!pez_  
int a = temp[l]; JL.yd H79  
int b = temp[r]; (:fE _H2z  
for (i = l, j = r, k = l; k <= r; k++) { -_{C+Y_  
if (a < b) { l $p_])x  
data[k] = temp[i++]; (Qx-KRH  
a = temp; VeN&rjc  
} else { T4HoSei  
data[k] = temp[j--]; siss_1J  
b = temp[j]; I7q?V1f u4  
} k[r./xEv+t  
} !dbA (  
} ^EuyvftZ  
os(Jr!p_=  
/** w}U5dM`  
* @param data 9p[W :)P4d  
* @param l 7uv/@(J"$  
* @param i 8JtI&aH-L  
*/ Z0F>"Z _qn  
private void insertSort(int[] data, int start, int len) { TN |{P  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); l|ZzG4]+l  
} p+`*~6Jj/  
} * 0&i'0>  
} #)PGQ)(  
} MOqA$b  
VH7iH|eW  
堆排序: W3o }.|]  
S,"ChR  
package org.rut.util.algorithm.support; OO !S w  
SRG!G]?-  
import org.rut.util.algorithm.SortUtil; !7ZfT?&  
bW 86Iw  
/** y1\^v_.^  
* @author treeroot hBfzU\*0H  
* @since 2006-2-2 B GEJiLH  
* @version 1.0 c>U{,z  
*/ G7_"^r%c9;  
public class HeapSort implements SortUtil.Sort{ wWOT*R_  
2ucF( ^  
/* (non-Javadoc) j3rv2W\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) , R.+-X  
*/ ,a]~hNR*X  
public void sort(int[] data) { g]iy-,e  
MaxHeap h=new MaxHeap(); Y%CL@G60  
h.init(data); 5>1Y="B  
for(int i=0;i h.remove(); /H;kYx  
System.arraycopy(h.queue,1,data,0,data.length); T24#gF~  
} E? m#S  
^zWO[$n}tP  
private static class MaxHeap{ }%>$}4 ,  
IjB*myN.  
void init(int[] data){ Z;~E+dXC  
this.queue=new int[data.length+1]; |Z7bd^  
for(int i=0;i queue[++size]=data; !{]v='   
fixUp(size); oVEr{K)  
} ,5<`+w#a  
} TNFm7}=  
L$u&~"z-  
private int size=0; qT<qu(V:  
rCSG@D.  
private int[] queue; [-Dgo1}Qr  
eVCkPv *  
public int get() { ?;KJ (@Va  
return queue[1]; |L_g/e1A3  
} cdtzf:#q  
HyX4ob[X  
public void remove() { eR* ]<0=  
SortUtil.swap(queue,1,size--); FUqhSW  
fixDown(1); <C.$Db&9  
} RkH oT^  
file://fixdown f\F_?s)_y  
private void fixDown(int k) { ?9r,Y;,H  
int j; G}dOx}kT  
while ((j = k << 1) <= size) { Lq $4.l[j  
if (j < size %26amp;%26amp; queue[j] j++; 2W:?#h3  
if (queue[k]>queue[j]) file://不用交换 }b ]y 0"  
break; kJ<Xq   
SortUtil.swap(queue,j,k); In9|n^=H@  
k = j; jVFRqT%  
} HH~  du  
} @#--dOWYR  
private void fixUp(int k) { agxSb^ 8tF  
while (k > 1) { L^al1T  
int j = k >> 1; H'h4@S  
if (queue[j]>queue[k]) =3v 1]7 X  
break; UVBw;V  
SortUtil.swap(queue,j,k); W$MEbf%1  
k = j; iQ}sp64  
} *6x^w%=A  
} :qSi>KCGh  
)|^<woli,  
} 5wFS.!xD  
`E0.PV  
} ~lalc ^  
< ,cIc]eX  
SortUtil: \,bFm,kC?  
Y %D*O  
package org.rut.util.algorithm; WWs[]zr  
g@6X|W5,J  
import org.rut.util.algorithm.support.BubbleSort; pS@VLXZP  
import org.rut.util.algorithm.support.HeapSort; gK#fuQ$hH  
import org.rut.util.algorithm.support.ImprovedMergeSort; x< y[na  
import org.rut.util.algorithm.support.ImprovedQuickSort; fJ"~XTN}T  
import org.rut.util.algorithm.support.InsertSort; L+ETMk0  
import org.rut.util.algorithm.support.MergeSort; gZ >orZL'  
import org.rut.util.algorithm.support.QuickSort; w4MMo  
import org.rut.util.algorithm.support.SelectionSort; & Dl'*|  
import org.rut.util.algorithm.support.ShellSort; JX@6Sg<  
aj'8;E+  
/** }L7F g%,  
* @author treeroot J'^$|/Q  
* @since 2006-2-2 1> @|  
* @version 1.0 F-7b`cF9[r  
*/ KsU&<eQ  
public class SortUtil { {_X1&&>8/  
public final static int INSERT = 1; :8|3V~%m  
public final static int BUBBLE = 2; *Qwhi&k  
public final static int SELECTION = 3; KRR^?  
public final static int SHELL = 4; <<zz*;RJJ  
public final static int QUICK = 5; 6M vR R  
public final static int IMPROVED_QUICK = 6; 7 }MJK)  
public final static int MERGE = 7; -0IFPL8  
public final static int IMPROVED_MERGE = 8; V45Udwp ^  
public final static int HEAP = 9; yY-t4WeXP  
=qR7-Q8B  
public static void sort(int[] data) { DHNii_w4v  
sort(data, IMPROVED_QUICK); !2M[  
} K2o0L5Lke  
private static String[] name={ -[7,ph  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #.L0]Uqcp  
}; 3) Awj++  
T0"0/{5-_  
private static Sort[] impl=new Sort[]{ Eno2<<  
new InsertSort(), CU^3L|f2N  
new BubbleSort(), @C [|'[xQ  
new SelectionSort(), ,~?A. 5  
new ShellSort(), iK:qPrk-  
new QuickSort(), -L50kk>h  
new ImprovedQuickSort(), nMdN$E  
new MergeSort(), ^5 =E`q".  
new ImprovedMergeSort(), $JSC+o(q3#  
new HeapSort() Qufv@.'AY  
}; o-<_X&"a|5  
M "P  
public static String toString(int algorithm){ QOy&!6  
return name[algorithm-1]; z.Kq}r^  
} wp GnS  
Rf0\CEc  
public static void sort(int[] data, int algorithm) { Fl3r!a!P,  
impl[algorithm-1].sort(data); d47:2Zj  
} +C;#Qf  
4bi\$   
public static interface Sort { } 9s  
public void sort(int[] data);  glX2L ~  
} ;Y&?ixx  
XaS_3d  
public static void swap(int[] data, int i, int j) { ^PR,TR.  
int temp = data; -R \ @W q@  
data = data[j]; k3.p@8@:  
data[j] = temp; T9<nD"=:  
} Zy3&Zt  
} gN'i+mQcu  
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