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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。 pt:;9hA  
插入排序: 7INk_2  
>3;^l/2c  
package org.rut.util.algorithm.support; ](r ^.k,R  
OsW"CF2  
import org.rut.util.algorithm.SortUtil; TW`mxj_J2  
/** g jG2  
* @author treeroot mp `PE=  
* @since 2006-2-2 x;$|#]+  
* @version 1.0 <Mgf]v.QS  
*/ ~] =?b)B  
public class InsertSort implements SortUtil.Sort{ ( (3t:  
t \5c@j p  
/* (non-Javadoc) ~ }KzJiL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %u]6KrG18b  
*/ #t71U a  
public void sort(int[] data) { [J\DB)V/  
int temp; _[E\=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;?9A(q_Z  
} }F{=#Kqn^  
} &>}.RX]t  
} ;cSGlE |  
MUof=EJg>u  
} +}!DP~y+  
}X1.Wt=?  
冒泡排序: M|CrBJv+F  
2tr :xi@  
package org.rut.util.algorithm.support; 9\51Z:>  
J6|JWp  
import org.rut.util.algorithm.SortUtil; C@@$"}%v2  
AF#_nK) @  
/** O.:I,D&]  
* @author treeroot 5}<[[}(  
* @since 2006-2-2 %<U{K;  
* @version 1.0 .Vx|'-u  
*/ GEE ]Kr  
public class BubbleSort implements SortUtil.Sort{ ;e;\q;GP  
>_Uj?F:  
/* (non-Javadoc) }z'DWp=uN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tx+ p8J|Yr  
*/ g5R,% 6  
public void sort(int[] data) { huAyjo  
int temp; \y*j4 0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .w'vD/q;  
if(data[j] SortUtil.swap(data,j,j-1); jKt-~:  
} &tBA^igXK  
} ^@_).:oX7  
} ZO7bSxAN-  
} {'IFWD.5  
Yn 1?#%%  
} VN|G5*  
xURw,  
选择排序: EhXiv#CZ  
e{t=>vry  
package org.rut.util.algorithm.support; WFh@%j  
aF])"9  
import org.rut.util.algorithm.SortUtil; T'R,vxP)\  
q z:]-A  
/** A[9NP-~  
* @author treeroot 5^F]tRz-  
* @since 2006-2-2 uu3M{*}  
* @version 1.0 i`~~+6`J  
*/ >-<F)  
public class SelectionSort implements SortUtil.Sort { Yq0# #__  
$xcv>  
/* !QTPWA  
* (non-Javadoc) oWD)+5. ]  
* jM\ %$_/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DyX0 xx^  
*/ 0#`)Prop6  
public void sort(int[] data) { YKq0f=Ij  
int temp; FQ##397  
for (int i = 0; i < data.length; i++) { Qtnv#9%Vi  
int lowIndex = i; EW;1`x  
for (int j = data.length - 1; j > i; j--) { P!>g7X  
if (data[j] < data[lowIndex]) { #11RLvDQd  
lowIndex = j; $NCm;0\B|  
} k#jm7 +  
} Cgo XZX  
SortUtil.swap(data,i,lowIndex); N(7u],(Om  
} 86{ZFtv  
} ~>w:;M=sV8  
96)v#B?p  
} fM9xy \.  
/#IH -2N  
Shell排序: ;*`_#Rn#  
-R74/GBg  
package org.rut.util.algorithm.support; &NP6%}bR`  
~*kK4]lP  
import org.rut.util.algorithm.SortUtil; t[q3 {-  
h&$Py  
/** I9,8HtnA  
* @author treeroot I}ndRDz[  
* @since 2006-2-2 .pKN4  
* @version 1.0 &z QWIv  
*/ l]u7.~b  
public class ShellSort implements SortUtil.Sort{ +Z$a1 Y@  
7yUvL8p-  
/* (non-Javadoc) x Zg7Jg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "MTq{f2?  
*/ bQpoXs0w;  
public void sort(int[] data) { #8&#E?^d  
for(int i=data.length/2;i>2;i/=2){ Hi7G/2t@`  
for(int j=0;j insertSort(data,j,i); 'rh\CA/}D  
} ]]3Q*bq4  
} ZZwBOGVU  
insertSort(data,0,1); T"B8;|  
} sOC| B  
bx]1 4}6  
/** \aB&{`iG  
* @param data VHj*aBHB  
* @param j kw;wlFU;  
* @param i (Otur  
*/ v<`$bvv?  
private void insertSort(int[] data, int start, int inc) { Pd,!&  
int temp; $4: ~* IQ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R1~7F{FW  
} BMF3XcH~G  
} m9k2h1  
} pdy+h{]3  
eoJFh  
} }R\B.2#M_@  
<@%ma2  
快速排序: 8m \;P  
y "<JE<X  
package org.rut.util.algorithm.support; }Uq/kei^P  
![j(o!6&  
import org.rut.util.algorithm.SortUtil; ;wp W2%&  
R<t&F\>  
/** 8db6(Q~P  
* @author treeroot HK? Foo?  
* @since 2006-2-2 `} ZL'\G  
* @version 1.0 |})rt5|f1!  
*/ ruWye1X;  
public class QuickSort implements SortUtil.Sort{ bf{Ep=-  
VgUvD1v?}  
/* (non-Javadoc) we @Yw6<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y.%i  
*/ cx<h_  
public void sort(int[] data) { vDWr|M%``l  
quickSort(data,0,data.length-1); DU(X,hDBF  
} Scf.4~H 0  
private void quickSort(int[] data,int i,int j){ &,F elB0*  
int pivotIndex=(i+j)/2; PaA6Z":  
file://swap 1ME|G"$;  
SortUtil.swap(data,pivotIndex,j); !(}OBZ[*  
9B& }7kk  
int k=partition(data,i-1,j,data[j]); /^NJ)9IB  
SortUtil.swap(data,k,j); x={kjym L  
if((k-i)>1) quickSort(data,i,k-1);  hgNY[,  
if((j-k)>1) quickSort(data,k+1,j); Sw/J+FO2  
A<]&JbIt  
} ,Z >JvTnH  
/** wX@H &)<s  
* @param data L/c4"f|.*v  
* @param i T$f:[ye]Z  
* @param j zv&ePq\#  
* @return `AB~YX%(  
*/ '! #On/  
private int partition(int[] data, int l, int r,int pivot) { L,tZh0  
do{ -<H ri5  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6Uch 0xha!  
SortUtil.swap(data,l,r); p^}L  
} L)@`58Eil  
while(l SortUtil.swap(data,l,r); g6HphRJ5s  
return l; l A 0-?k  
} ^V_ku@DY  
|)~Ex 9%ev  
} Bi %Z2/  
?]759,Q3L  
改进后的快速排序: ;B,nzx(L  
$gXkx D  
package org.rut.util.algorithm.support; `4se7{'UK`  
8Ix -i  
import org.rut.util.algorithm.SortUtil; tuX =o  
`" i^'VL,  
/** EolE?g@l8  
* @author treeroot uv?8V@x2  
* @since 2006-2-2 x;<oaT$X  
* @version 1.0 <|ka{=T  
*/ 721{Ga4~S  
public class ImprovedQuickSort implements SortUtil.Sort { v/QEu^C  
dw@TbJ  
private static int MAX_STACK_SIZE=4096; Pm;x]Aj  
private static int THRESHOLD=10; -9hp+0 <  
/* (non-Javadoc) oNh68ON:c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cmp{FN"o  
*/ R?1idl)  
public void sort(int[] data) { " 6 uTo0  
int[] stack=new int[MAX_STACK_SIZE]; m 4wPuW  
Cb4d|yiS8  
int top=-1; @'6S[zU  
int pivot; b\<lNE!L  
int pivotIndex,l,r; ubiQ8Bx  
[1t\|v  
stack[++top]=0; &\CJg'D:m  
stack[++top]=data.length-1; TsoCW]h  
[i2A{(x  
while(top>0){ WV5r$   
int j=stack[top--]; |_xZ/DT  
int i=stack[top--]; ]b5%?^Z#  
,+swH;=7#r  
pivotIndex=(i+j)/2; |?4~T:  
pivot=data[pivotIndex]; {o Q(<&Aw  
Yg\{S<wr  
SortUtil.swap(data,pivotIndex,j); 5 ]A$P\7~1  
P]~N-xdV  
file://partition fzq'S]+  
l=i-1; ;$E~ZT4p  
r=j; \ SoYx5lf  
do{ * ePDc'   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \<0G kp  
SortUtil.swap(data,l,r); FN{H\W1cf  
} (**-"o]HH  
while(l SortUtil.swap(data,l,r); ::^qy^n  
SortUtil.swap(data,l,j); <DA{\'jJ  
1R^XWAb  
if((l-i)>THRESHOLD){ nsM>%+o  
stack[++top]=i; ze#rYNvo/  
stack[++top]=l-1; 'Qp&,xK  
} \}]=?}(  
if((j-l)>THRESHOLD){ 9&|12x$  
stack[++top]=l+1; Y3 Pz00x  
stack[++top]=j; :pL1F)-*  
} r_qncy,F  
a+4`}:KA#  
} (9WL+S  
file://new InsertSort().sort(data); e _SoM!;  
insertSort(data); (1saof *p%  
} !;xf>API  
/** A1#4nkkc9  
* @param data VuJfo9 `E  
*/ e>ZbZy?  
private void insertSort(int[] data) { E-5ij,bHv3  
int temp; W07-JHV%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); AaCnTRG  
} : 9djMsd  
} 02]8|B(E90  
} Fyi?,,  
y{&{=1#  
} 5p#o1I  
iZDb.9@&t  
归并排序: !>a&`j2:W  
ue^?/{OuT  
package org.rut.util.algorithm.support; 42b=z//;  
&CxyP_  
import org.rut.util.algorithm.SortUtil; 2Q`PUXj  
y4)ZUv,}  
/** DRKc&F6Qy  
* @author treeroot =Ov;'MC  
* @since 2006-2-2 o}r!qL0c  
* @version 1.0 l\A}lC0?J  
*/ ".*a)  
public class MergeSort implements SortUtil.Sort{ !DY2{Wb  
l"~h1xk~  
/* (non-Javadoc) vJ#rW8y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5 ~ *'>y  
*/ N>F2 c)rm  
public void sort(int[] data) { On2Vf*G@|  
int[] temp=new int[data.length]; ~8Dd<4?F]  
mergeSort(data,temp,0,data.length-1); )|59FOWg  
} 5W:Gl?$S}  
sTYuwna~   
private void mergeSort(int[] data,int[] temp,int l,int r){ b}EYNCw_7S  
int mid=(l+r)/2; (|ct`KU0#  
if(l==r) return ; Kc-A-P &Ry  
mergeSort(data,temp,l,mid); o%N0K   
mergeSort(data,temp,mid+1,r); I49=ozPP  
for(int i=l;i<=r;i++){ R"8})a gw  
temp=data; ^,ZvKA"}+/  
} ya*q;D  
int i1=l; btB(n<G2#  
int i2=mid+1; !)51v {  
for(int cur=l;cur<=r;cur++){ W~+!"^<n  
if(i1==mid+1) g[D,\  
data[cur]=temp[i2++]; zn?a|kt  
else if(i2>r) '%eaK_+7  
data[cur]=temp[i1++]; LNyL>VHkK  
else if(temp[i1] data[cur]=temp[i1++]; ~NxoF  
else h!t2H6eyF  
data[cur]=temp[i2++]; -6 7f33  
} {_k!!p6  
} 7Da^Jv k  
Tg{dIh.Q~O  
} n )wpxR  
#IL~0t  
改进后的归并排序: kHo;9j-U  
o}AqNw60v  
package org.rut.util.algorithm.support; RL]lt0O{  
_+ R_ms  
import org.rut.util.algorithm.SortUtil; ek0;8Ds9  
644hQW&W  
/** AIRVvW~($  
* @author treeroot zvQ^f@lq2  
* @since 2006-2-2 +2k|g2  
* @version 1.0 D.oS8'   
*/ R(7X}*@X  
public class ImprovedMergeSort implements SortUtil.Sort { !~$YD*" S  
3Oig/KZ  
private static final int THRESHOLD = 10; Yf2+@E  
7K5o" "  
/* )lngef /D_  
* (non-Javadoc) WSpg(\Cs  
* (>Q9jNW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'k(~XA}X:  
*/ Q+%m+ /Zq  
public void sort(int[] data) { aBA#\eV  
int[] temp=new int[data.length]; GO:1 Z?^  
mergeSort(data,temp,0,data.length-1); J?,!1V=  
} ,[K)E  
o"+ &^  
private void mergeSort(int[] data, int[] temp, int l, int r) { 7gR;   
int i, j, k; `$x#_-Hn  
int mid = (l + r) / 2; |2t7mat  
if (l == r) qeO6}A"^|  
return; %Cbc@=k  
if ((mid - l) >= THRESHOLD) uK&wS#uY  
mergeSort(data, temp, l, mid); kvO`]>#;$?  
else p6eDd"Y  
insertSort(data, l, mid - l + 1); c402pj  
if ((r - mid) > THRESHOLD) oe_[h]Hgl  
mergeSort(data, temp, mid + 1, r); 5KPPZmO  
else ;(iUY/ h[h  
insertSort(data, mid + 1, r - mid); ^$s~qQQ}B  
Iz$W3#hi  
for (i = l; i <= mid; i++) { J'Mgj$T $  
temp = data; 5)zh@aJ@  
} IkXKt8`YVA  
for (j = 1; j <= r - mid; j++) { |EEz>ci  
temp[r - j + 1] = data[j + mid]; S bqM=I+  
} p~zTRnm  
int a = temp[l]; a518N*]j  
int b = temp[r]; uL2 {v  
for (i = l, j = r, k = l; k <= r; k++) { Vwh&^{Eh  
if (a < b) { (9[C0eS  
data[k] = temp[i++]; G>{:D'#  
a = temp; p$!+2=)gY  
} else { s"Pk-Dv  
data[k] = temp[j--]; i\R\bv[9  
b = temp[j]; Ai_|)  
} q!h*3mNm  
} )b2E/G@X&  
} hu*>B  
%IH|zSr)EM  
/** 9oau _Q#  
* @param data )1yUV*6  
* @param l ujHzG}2z  
* @param i ZtK%b+MBP  
*/ .gsu_N_v  
private void insertSort(int[] data, int start, int len) { KL\=:iWA  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $=g.-F% *=  
} rxK[CDM,  
} d~f0]O  
} 9qO:K79|  
} BMsy}08dQ  
YHv,Z|.w  
堆排序: MVU'GHv  
iO=uXN1g  
package org.rut.util.algorithm.support; Ue\oIi  
2dJ)4  
import org.rut.util.algorithm.SortUtil; `r0 qn'*  
n7!Lwq2  
/** lJQl$Wx^  
* @author treeroot 7)It1i-  
* @since 2006-2-2 \U  =>  
* @version 1.0 28qWC~/9  
*/ 8P y_Y>  
public class HeapSort implements SortUtil.Sort{ DdZ_2B2  
`YU:kj<6  
/* (non-Javadoc) &#\7w85$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5}^08Xl  
*/ L5|;VH  
public void sort(int[] data) { 5N</Z6f'o  
MaxHeap h=new MaxHeap(); ScmzbDu  
h.init(data); +O:pZz  
for(int i=0;i h.remove(); +#"Ic:  
System.arraycopy(h.queue,1,data,0,data.length); P##(V!YR  
} ?|rw=%  
Gg,k  
private static class MaxHeap{ T`0gtSS  
*E q7r>[  
void init(int[] data){ 3K] 0sr  
this.queue=new int[data.length+1]; WD`{kqc  
for(int i=0;i queue[++size]=data; GM56xZ!2T  
fixUp(size); ~=gH7V  
} szs3x-g  
} #Lt+6sa]2@  
-hV KPIb  
private int size=0; *ww(5 t  
FrM~6A_  
private int[] queue; cx%9UK*c  
-r0\  
public int get() { 'Bn_'w~j{  
return queue[1]; qBrZg  
} y(BLin!O.  
l{x#*~g a  
public void remove() { BQmafpp`  
SortUtil.swap(queue,1,size--); .Eyk?"^  
fixDown(1); HSFf&|qqx  
} gG>^h1_o~  
file://fixdown ?PtRb:RHt  
private void fixDown(int k) { !{aA*E{  
int j; 3$f5][+U  
while ((j = k << 1) <= size) { /'^>-!8_1  
if (j < size %26amp;%26amp; queue[j] j++; tl#s:  
if (queue[k]>queue[j]) file://不用交换 6y!?xot  
break; L. ?dI82c  
SortUtil.swap(queue,j,k); gx R|S  
k = j; W 9MZ  
} m&c(N  
} Olh-(u:9+O  
private void fixUp(int k) { mK&9p{4#U  
while (k > 1) { l'8wPmy%N  
int j = k >> 1; i_^NbC   
if (queue[j]>queue[k]) I`>%2mP[C  
break; D??/=`|8  
SortUtil.swap(queue,j,k); dp W%LXM_  
k = j; ;XuE Mq,Di  
} n,LKkOG  
} ]KT,s].  
[:'?}p  
} \`5u@Nzx  
J~`%Nj5>  
} $F$R4?_  
UeeV+xU  
SortUtil: }r<^]Q*&p  
[,X,2  
package org.rut.util.algorithm; !9OgA  
dR{ V,H7N  
import org.rut.util.algorithm.support.BubbleSort; -{mq\GvGn  
import org.rut.util.algorithm.support.HeapSort; nit7|T@^  
import org.rut.util.algorithm.support.ImprovedMergeSort; *dgN pJ 9  
import org.rut.util.algorithm.support.ImprovedQuickSort; |.W;vc<  
import org.rut.util.algorithm.support.InsertSort; l[{}ZKZ  
import org.rut.util.algorithm.support.MergeSort; bncFrzp#o  
import org.rut.util.algorithm.support.QuickSort; ="E V@H?U  
import org.rut.util.algorithm.support.SelectionSort; (ZsR=:9(  
import org.rut.util.algorithm.support.ShellSort; HKw4}FC*  
a$& 6a   
/** o:*iT =l  
* @author treeroot ixpG[8s  
* @since 2006-2-2 Lxrn#Z eM  
* @version 1.0 2 -8:qmP(  
*/ fbkjK`_q  
public class SortUtil { "b7C0NE  
public final static int INSERT = 1; IV*$U7~  
public final static int BUBBLE = 2; b;ZAz  
public final static int SELECTION = 3; nP5fh_/  
public final static int SHELL = 4; 1OS3Gv8jc~  
public final static int QUICK = 5; POs~xaZ`H  
public final static int IMPROVED_QUICK = 6; %W@IB8]Vr  
public final static int MERGE = 7; nmrk-#._@9  
public final static int IMPROVED_MERGE = 8; 8iA(:Tb  
public final static int HEAP = 9; 9hpM*wt  
YJsi5  
public static void sort(int[] data) { RjHpC7b*%  
sort(data, IMPROVED_QUICK); Jx?>1q=M  
} #C}(7{Vt  
private static String[] name={ 7?#32B Gr  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 54%}JA][  
}; JFdzA  
hKYPH?b%  
private static Sort[] impl=new Sort[]{ I%xJ)fIK  
new InsertSort(), IBsn>*ja<  
new BubbleSort(), C =U4|h~W  
new SelectionSort(), KHiJOeLc  
new ShellSort(), CgE5;O  
new QuickSort(), zf u78  
new ImprovedQuickSort(), Gjr2]t;E  
new MergeSort(), Z8UM0B=i  
new ImprovedMergeSort(), -C<aB750O)  
new HeapSort() Wno5B/V  
}; 5!*a,$S  
q>X 2=&1  
public static String toString(int algorithm){ Y.#+Yh[  
return name[algorithm-1]; E 3.s8}}  
} 2_v>8B  
:"]ei@  
public static void sort(int[] data, int algorithm) { LcF3P 4  
impl[algorithm-1].sort(data); :LG%8Z{R  
} !CKUkoX  
h65j,v6B  
public static interface Sort { rg.if"o  
public void sort(int[] data); pXa? Q@ 6  
} N3) v,S-  
k*^W lCZ3  
public static void swap(int[] data, int i, int j) { # w6CL  
int temp = data; "-%H</  
data = data[j]; :B~c>:  
data[j] = temp; '"^JNb^I  
} O!tD1^O!1}  
} _TF>c:m3  
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