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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。 0R HS]cN  
插入排序: C8IkpAD  
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package org.rut.util.algorithm.support; 1, "I=  
~+O`9&  
import org.rut.util.algorithm.SortUtil; m'cz5mcD  
/** E X%6''ys  
* @author treeroot `$s)X$W?  
* @since 2006-2-2 kSbO[)p   
* @version 1.0 Jd5\&ma  
*/ k"xGA*B|  
public class InsertSort implements SortUtil.Sort{ {=UFk-$=  
h+,'B&=|_  
/* (non-Javadoc) d_Q*$Iz)3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #z ON_[+s9  
*/ .sM<6;  
public void sort(int[] data) { #D+7TWDwNt  
int temp; t})lr\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EL^8zyg%%  
} ))7LE|1l  
} eV"!/A2:N5  
} 'X =p7 d|'  
)~ 0}Et l  
} o:2Q2+d  
D.'h?^kA  
冒泡排序: JD6aiI!Su  
C5P$ &s\  
package org.rut.util.algorithm.support; s\[LpLt  
`79[+0hL'  
import org.rut.util.algorithm.SortUtil; n(g)UNx  
pb!V|#u"  
/** qG<7hr@x]  
* @author treeroot #/Ruz'H1>  
* @since 2006-2-2 qv[[Q[RK-5  
* @version 1.0 f-;$0mTQ  
*/ N0i!l|G6  
public class BubbleSort implements SortUtil.Sort{ bS.s?a  
xwRhs!`t1  
/* (non-Javadoc) @@I7$*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .XXW|{  
*/ k<a;[_S  
public void sort(int[] data) { {7*>Cv}  
int temp; r-}-C!  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {~SaRB2<'  
if(data[j] SortUtil.swap(data,j,j-1); ~#R9i^Y  
} 62)d22  
} f`jc#f5+'  
} MtS3p>4  
} j[I`\"  
,apNwkY  
} y<pnp?x4  
!Uh2}ic  
选择排序: mpgO s  
F/p,j0S  
package org.rut.util.algorithm.support; .%}?b~  
!*aPEf270  
import org.rut.util.algorithm.SortUtil; LCs__.  
.Obn&S  
/** K_~h*Yc  
* @author treeroot Rx7X_A}  
* @since 2006-2-2 ZrO!L_/  
* @version 1.0 33'Y[4  
*/ 4[yIOs  
public class SelectionSort implements SortUtil.Sort { LJFG0 W  
|F[=b'?  
/* .1yT*+`  
* (non-Javadoc) AH#4wPxF  
* =w$tvo/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >(r{7Qg  
*/ ! }f1`/   
public void sort(int[] data) { SJ?6{2^  
int temp; :O-iykXyI  
for (int i = 0; i < data.length; i++) { S0d~.ah30  
int lowIndex = i; #m<tJnEO  
for (int j = data.length - 1; j > i; j--) { 6"/WZmOp  
if (data[j] < data[lowIndex]) { _;1}x%4v  
lowIndex = j; i;z{zVR  
} 5%zXAQD=<  
} D&G"BZx|  
SortUtil.swap(data,i,lowIndex); |4(~%| 8{  
} NGC,lv  
} t?c}L7ht  
Jzkq)]M  
} 0AK,&nbF  
g{IF_ 1  
Shell排序: uo\ .7[1  
#[{3} %b  
package org.rut.util.algorithm.support; *&BnF\?m  
Z@a9mFI?  
import org.rut.util.algorithm.SortUtil; T9W`?A  
x5}'7,A  
/** M`YWn ;  
* @author treeroot r;BT,jiX  
* @since 2006-2-2 ]\-^>!F#K  
* @version 1.0 Q?b14]6im  
*/ e^p +1-B  
public class ShellSort implements SortUtil.Sort{ ;Uc0o!1  
vo>d!rVCV  
/* (non-Javadoc) ;~fT,7qBah  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N`iwC!  
*/ ,.iRnR  
public void sort(int[] data) { &|>S|  
for(int i=data.length/2;i>2;i/=2){ U,#yqER'r  
for(int j=0;j insertSort(data,j,i); x:-.+C%  
} 6+r$t#  
} kiUGZ^k\s  
insertSort(data,0,1); j',W 64  
} P-F)%T[  
^b:( jI*l  
/** `&\Q +W  
* @param data +$4(zP s@  
* @param j x{D yTtX<  
* @param i R1Sy9x .  
*/ hxce\OuU0h  
private void insertSort(int[] data, int start, int inc) { ?X@fKAj  
int temp; ;iDPn2?6?x  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); dJ$"l|$$  
} zdXkR]  
} ),%6V5a+E  
} *s@Qtgu  
&-(463  
} :W b j\  
o7IxJCL=Q  
快速排序: U,nEbKJgk  
a0r"N[&  
package org.rut.util.algorithm.support; u2 `b'R9  
E=){K  
import org.rut.util.algorithm.SortUtil; >0Q|nCx  
%Uz(Vd#K  
/** Q:J^"  
* @author treeroot sz9L8f2  
* @since 2006-2-2 NcY608C  
* @version 1.0 @?h/B=5 6  
*/ &89 oO@5  
public class QuickSort implements SortUtil.Sort{ 2NB L}x  
L(X6-M:  
/* (non-Javadoc) O%r;5kP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YM5fyv?  
*/  ~c6}  
public void sort(int[] data) { &+G"k~%  
quickSort(data,0,data.length-1); EbqcV\Kb  
} P./VmY'  
private void quickSort(int[] data,int i,int j){ ~a xjjv  
int pivotIndex=(i+j)/2; :O5og[;b  
file://swap 8i?l02  
SortUtil.swap(data,pivotIndex,j); u,3#M ~  
V2N_8)s9W  
int k=partition(data,i-1,j,data[j]); 4lZ$;:Jg  
SortUtil.swap(data,k,j); {[+2n]f_G  
if((k-i)>1) quickSort(data,i,k-1); id$Ul?z8  
if((j-k)>1) quickSort(data,k+1,j); 37;$-cFE  
_'#x^D  
} .L~Nq%g1  
/** ^{8Gt @  
* @param data 3"rzb]=R  
* @param i o=nsy]'&  
* @param j fHZTXvxoL  
* @return KM`eIw>8  
*/ &N;-J2M  
private int partition(int[] data, int l, int r,int pivot) { 1 E22R  
do{ @u1zB:  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,\v91Rp~?  
SortUtil.swap(data,l,r); BATG FS&  
} E#s)52z=B  
while(l SortUtil.swap(data,l,r); d:F @a  
return l; hUm'8)OJ  
} ?-Vjha@BO  
w4fW<ISg  
} +kFxi2L6  
,6r{VLN  
改进后的快速排序: B*E2.\~  
cCR+D.F  
package org.rut.util.algorithm.support; mXXt'_"  
n#=o?!_4  
import org.rut.util.algorithm.SortUtil; mq%<6/Y U  
/x1MPP>fu  
/** +d|mR9^([  
* @author treeroot asC_$tsMe  
* @since 2006-2-2 +CI1V>6^  
* @version 1.0 ?Mee 6  
*/ 'FYJMIs  
public class ImprovedQuickSort implements SortUtil.Sort { *s;|T?~i  
O2"gj"D  
private static int MAX_STACK_SIZE=4096; vp.ZK[/`  
private static int THRESHOLD=10; O-4C+?V  
/* (non-Javadoc) r:]1 O*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @9&P~mo/  
*/ t3+Py7qv  
public void sort(int[] data) { )Jv[xY~  
int[] stack=new int[MAX_STACK_SIZE]; kkK kf'  
t>H`X~SR?  
int top=-1; K).n.:vYZ  
int pivot; )IJQeC  
int pivotIndex,l,r; *FJZi Py  
_.-;5M-  
stack[++top]=0; =r@vc  
stack[++top]=data.length-1; z'`y,8Y1l  
F0690v0mB[  
while(top>0){ f#Xyoa%  
int j=stack[top--]; sUYxT>R  
int i=stack[top--]; ,<2DL p%%D  
~i.k$XGA  
pivotIndex=(i+j)/2; $2%f 8&  
pivot=data[pivotIndex]; _$>pw<  
pn*3\  
SortUtil.swap(data,pivotIndex,j); Q#EP|  
Sv;_HZ  
file://partition J sEa23  
l=i-1; X*L;.@xA  
r=j; &  =/  
do{ ti &J  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8?FbtBAn  
SortUtil.swap(data,l,r); HQ{JwW!m  
} ^S6u<,  
while(l SortUtil.swap(data,l,r); PpsIhMq@  
SortUtil.swap(data,l,j); @ps1Dr4s  
1 tR_8lC  
if((l-i)>THRESHOLD){ C^ )*Dsp  
stack[++top]=i; (os$B  
stack[++top]=l-1; zuJtpMn  
} YA&g$!  
if((j-l)>THRESHOLD){ > 0<)=  
stack[++top]=l+1; CZbYAxNl  
stack[++top]=j; :EHJ\+kejX  
} N&[D>G]>v  
|_ G )qp;  
} RV&^g*;E  
file://new InsertSort().sort(data); cr;g5C V  
insertSort(data); )3(;tT,$}^  
} #M!!CX*k  
/** Iz[@^IUx=  
* @param data jM:Y' l]  
*/ |!F5.%PY  
private void insertSort(int[] data) { 07Ed fe  
int temp; 6K-5g/hL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); BW,mwq  
} iS?42CV  
} x}twsc`  
} [V 8{b{  
Nl' )l"  
} "}Me}S<  
`CeJWL5{  
归并排序: ]!IVz)<E&  
}(<%`G6N  
package org.rut.util.algorithm.support; hb{ u'=  
1EyL#;k  
import org.rut.util.algorithm.SortUtil; N 75:5  
`EtS!zD~b  
/** V_Wwrhua  
* @author treeroot # 6!5 2  
* @since 2006-2-2 V#jWege  
* @version 1.0 F_bF  
*/ apk4 j\i?5  
public class MergeSort implements SortUtil.Sort{ ,<A$h3*  
=~I-]4  
/* (non-Javadoc) IuZ) [*W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .SWt3|Pi5  
*/ 2y%,p{="  
public void sort(int[] data) { mYc.x  
int[] temp=new int[data.length]; #Oha(mRY  
mergeSort(data,temp,0,data.length-1); )z8!f}:De=  
} %0Y=WYUH>  
KLX/O1B  
private void mergeSort(int[] data,int[] temp,int l,int r){ 'Z`$n8  
int mid=(l+r)/2; ~8m=1)A{(  
if(l==r) return ; jLJ1u/l>;  
mergeSort(data,temp,l,mid); Jxqh )l  
mergeSort(data,temp,mid+1,r); F]m gmYD%  
for(int i=l;i<=r;i++){ #oJ5k8Wy  
temp=data; d(:3   
} u0`%+:]0  
int i1=l; =YG _z^'  
int i2=mid+1; Z#.f&K )xX  
for(int cur=l;cur<=r;cur++){ mm5$> [%U  
if(i1==mid+1) Uje|`<X  
data[cur]=temp[i2++]; ?GTU=gp Q  
else if(i2>r) B>Wu;a.:L  
data[cur]=temp[i1++]; P00f 6  
else if(temp[i1] data[cur]=temp[i1++]; $v8l0JA *  
else H\ 1qI7N C  
data[cur]=temp[i2++];  KQ[!o!%  
} }KD;0t4  
} StI1){Wf  
a=TG[* s  
} l6kmS  
AfC>Q!-w  
改进后的归并排序: .qA{xbu  
FWC5&tM  
package org.rut.util.algorithm.support; P_u|-~|\  
f+.T^es  
import org.rut.util.algorithm.SortUtil;  d^(1TNS  
O@iu aeEW  
/** M.td^l0  
* @author treeroot S^Au#1e   
* @since 2006-2-2 Tg3!Rq55  
* @version 1.0 }qjCTEs}  
*/ v_<2H' *Q  
public class ImprovedMergeSort implements SortUtil.Sort { iE.-FZc  
)wVIb)`R>Y  
private static final int THRESHOLD = 10; :SV>+EDY   
RmI1`  
/* {7Mj P+\  
* (non-Javadoc) !,Zp? g)  
* 8^B;1`#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~ 7)A"t  
*/ p h[\)  
public void sort(int[] data) { !6}O.Nu  
int[] temp=new int[data.length]; L_em')  
mergeSort(data,temp,0,data.length-1); :D7|%KK  
} oR p:B &  
N -w(e  
private void mergeSort(int[] data, int[] temp, int l, int r) { Npn=cLC&  
int i, j, k; H.G!A6bd  
int mid = (l + r) / 2; I^Z8PEc+  
if (l == r) [_xyl e  
return; dGwszziuK  
if ((mid - l) >= THRESHOLD) V,EF'-F  
mergeSort(data, temp, l, mid); nY $tp  
else iq*A("pU  
insertSort(data, l, mid - l + 1); UofTll)  
if ((r - mid) > THRESHOLD) ^zEE6i  
mergeSort(data, temp, mid + 1, r); 7~M<cD  
else eo^/c +FG  
insertSort(data, mid + 1, r - mid); $j)hNWI  
-RJE6~>'\  
for (i = l; i <= mid; i++) { 7-_vY[)/  
temp = data; woq)\;CK  
} 5.tvB  
for (j = 1; j <= r - mid; j++) { Tp<k<uKD  
temp[r - j + 1] = data[j + mid]; bzi|s5!'<  
} pUl8{YGS  
int a = temp[l]; B pLEPuu30  
int b = temp[r]; TFDm5XJ  
for (i = l, j = r, k = l; k <= r; k++) { K t#,]]  
if (a < b) { DG;y6#|p  
data[k] = temp[i++]; VhEMk\  
a = temp; 6k?`:QK/sl  
} else { >NV=LOO  
data[k] = temp[j--]; %~*jae!f  
b = temp[j]; g<\z=H  
} _x1EZ&dh  
} q6`G I6  
} 8O1K[sEjui  
H^1gy=kdj  
/** 7 gB{In0  
* @param data /)uM[ dnai  
* @param l NE|[o0On  
* @param i 0=v{RQ;W4  
*/ ^+?|Qfi  
private void insertSort(int[] data, int start, int len) { )y7_qxwbV  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); pJ, @Y>  
} ED} 31L  
} K X]oE+:  
} > 8]j  
} rn.\tDeA  
cy~oPj]j  
堆排序: j?n+>/sG,  
P"7ow-  
package org.rut.util.algorithm.support; 2Ohp]G  
kpob b  
import org.rut.util.algorithm.SortUtil; &~5=K  
[6(Iwz?  
/** G%TL/Z40  
* @author treeroot '~-IV0v9  
* @since 2006-2-2 h[XGC =%  
* @version 1.0 6xgv:,  
*/ BQ05`nkF  
public class HeapSort implements SortUtil.Sort{ ^&c$[~W  
iz}sM>^  
/* (non-Javadoc) Qu{c B^Ga*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +_HdX w#  
*/ k4KHS<n0  
public void sort(int[] data) { C>|@& o1  
MaxHeap h=new MaxHeap(); {,O`rW_eS  
h.init(data); aw}+'(?8]  
for(int i=0;i h.remove(); \Rk$t7ZH  
System.arraycopy(h.queue,1,data,0,data.length); <rK=9"$y(t  
} fAj2LAK  
:h";c"  
private static class MaxHeap{ <R1X \s.  
`hB1b["(  
void init(int[] data){ k ~6- cx  
this.queue=new int[data.length+1]; rPq<Xb\  
for(int i=0;i queue[++size]=data; #w3ru6*W  
fixUp(size); VTe.M[:  
} :X .,  
} Na!za'qk[o  
2f:Mm'XdB  
private int size=0; =g@9>3~{!  
oJaAM|7uv  
private int[] queue; V"d=.Hb>  
Pl~P-n  
public int get() { Gm=>!.p  
return queue[1]; ^>r^3C)_-  
} /3^P_\,>f  
xNdIDj@  
public void remove() { K^i"9D)A  
SortUtil.swap(queue,1,size--); T'rjh"C&|  
fixDown(1); O25m k X  
} %]Cjhs"v  
file://fixdown @sf 90&f  
private void fixDown(int k) { ]O!s 'lC  
int j; fCEz-TMW  
while ((j = k << 1) <= size) { CD?&<NV  
if (j < size %26amp;%26amp; queue[j] j++; (M% ;~y\  
if (queue[k]>queue[j]) file://不用交换 rH}fLu8,;Q  
break; ~oi_r8 K  
SortUtil.swap(queue,j,k); C*wdtEGq  
k = j; kN'Thq/ZE  
} Mz|L-62  
} 6 nGY^  
private void fixUp(int k) { -gKpL\  
while (k > 1) { h-'wV${b  
int j = k >> 1; lpEDPvD_Vm  
if (queue[j]>queue[k]) P79R~m`  
break; kr_oUXiX  
SortUtil.swap(queue,j,k); I($,9|9F  
k = j; yU`: IMz  
} \C\gn]Z  
}   8Uj:  
{ R*Y=Ie  
} 6/y* 2z;  
ZC\mxBy  
} rye)qp|  
Q#rt<S1zW  
SortUtil: .98.G4J>  
9.Ap~Ay.  
package org.rut.util.algorithm; Kx]> fHK  
#Go(tS~o  
import org.rut.util.algorithm.support.BubbleSort; <:cpz* G4  
import org.rut.util.algorithm.support.HeapSort; F X 1C e  
import org.rut.util.algorithm.support.ImprovedMergeSort; dIK{MA  
import org.rut.util.algorithm.support.ImprovedQuickSort; +L6" vkz  
import org.rut.util.algorithm.support.InsertSort; tP]q4i  
import org.rut.util.algorithm.support.MergeSort; ^-L{/'[8M  
import org.rut.util.algorithm.support.QuickSort; rsSue_Q  
import org.rut.util.algorithm.support.SelectionSort; 6:RMU  
import org.rut.util.algorithm.support.ShellSort; g3a/;wl  
.;%q/hP  
/** i ^S2%qz  
* @author treeroot y*KC*/'"  
* @since 2006-2-2 PdM*5g4  
* @version 1.0 '(9YB9 i  
*/ 6e:P.HqjA  
public class SortUtil { |F~88j{VN  
public final static int INSERT = 1; T:#S86m  
public final static int BUBBLE = 2; k.>6nho`TV  
public final static int SELECTION = 3; l4 `^!  
public final static int SHELL = 4;  ("F)  
public final static int QUICK = 5; Kfd_uXL>  
public final static int IMPROVED_QUICK = 6;  tJ1-DoU  
public final static int MERGE = 7; 4.k`[q8  
public final static int IMPROVED_MERGE = 8; y$h"ty{g  
public final static int HEAP = 9; z.59]\;U>  
_@|fva&s,;  
public static void sort(int[] data) { AgI>  
sort(data, IMPROVED_QUICK); HwW6tQ  
} U 1F-~ {r  
private static String[] name={ 7%opzdS#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #[,= 1Od(q  
}; V(I7*_ZFl  
@$ftG  
private static Sort[] impl=new Sort[]{ /yt7#!tm+  
new InsertSort(), {tmKCG  
new BubbleSort(), ,]U[W  
new SelectionSort(), GRQ_+K  
new ShellSort(), n>T:2PQ3  
new QuickSort(), [edH%S}\  
new ImprovedQuickSort(), r+TK5|ke  
new MergeSort(), M4H"].Zm  
new ImprovedMergeSort(), i?W]*V~ply  
new HeapSort() RK;;b~  
}; y;,y"W  
EJ8I[(  
public static String toString(int algorithm){ z1}1*F"  
return name[algorithm-1]; B{=009.  
} 2mLUdx~c  
Ik-oI=>.  
public static void sort(int[] data, int algorithm) { 1(# RN9   
impl[algorithm-1].sort(data); x~Pvh+O  
} 6mAB(X^+  
[lOf|^9  
public static interface Sort { |I/,F;'  
public void sort(int[] data); Dx0O'uwR  
} - &NQ\W  
86#-q7aX  
public static void swap(int[] data, int i, int j) { 'FqEB]gu  
int temp = data; km}MqBQl  
data = data[j]; fK);!Hh  
data[j] = temp; w=5   
} 4y1>  
} zw< 4G[u  
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