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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。 1CZO+MB&"$  
插入排序: ,!^c`_Q\>@  
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package org.rut.util.algorithm.support; q~aj" GD  
}L|B@fW  
import org.rut.util.algorithm.SortUtil; ;(}~m&p  
/** lAo~w  
* @author treeroot 7O|`\&RY R  
* @since 2006-2-2 Q -$) H;,  
* @version 1.0 f &NX~(  
*/ MRo_An+  
public class InsertSort implements SortUtil.Sort{ j`@`M*)GB  
q!U$\Q&  
/* (non-Javadoc) .UX4p =  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kUGFg{"  
*/ R%2.N!8v  
public void sort(int[] data) { fsEQ4xN'  
int temp; hfbu+w):  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {0,6- dd5  
} G,<d;:  
} T3=h7a %=  
} [x, `)Fk  
-:r<sv$  
} fH9"sBiO  
Ex]Ku  
冒泡排序: xuqG)HthRS  
4/*@cW  
package org.rut.util.algorithm.support; |%XcI3@*  
}JQy&V%  
import org.rut.util.algorithm.SortUtil; %o\+R0K  
~-H3]  
/** ?771e:>S-  
* @author treeroot m0.g}N-w  
* @since 2006-2-2 }zkFl{/u  
* @version 1.0 lZIJ[.  
*/ jzpDKc%  
public class BubbleSort implements SortUtil.Sort{ J_yXL7d  
^a /q6{  
/* (non-Javadoc) vA6onYjA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2)$-L'YS  
*/ jFKp~`/#  
public void sort(int[] data) { (#85<|z  
int temp; 6Xo"?f  
for(int i=0;i for(int j=data.length-1;j>i;j--){ m-~3c]pA  
if(data[j] SortUtil.swap(data,j,j-1); cotySio$  
} ppLLX1S  
} gWjr|m<  
} lJfk4 -;M  
} ^@=4HtA  
lqrI*@>Tz  
} ,1CmB@  
=5^1Bl  
选择排序: 2-UD^;0  
wXnVQ-6H  
package org.rut.util.algorithm.support; =tA;JB  
H ~fF; I  
import org.rut.util.algorithm.SortUtil; 'ks  .TS&  
6q`)%"4k  
/** WO!OaC?+B,  
* @author treeroot _ 3>E+9TQ  
* @since 2006-2-2 .X.6<@$  
* @version 1.0 rqBoUS4  
*/ w3b?i89  
public class SelectionSort implements SortUtil.Sort { A{)pzV25  
y eIS}O  
/* !or_CJ8%  
* (non-Javadoc) g__s(  IJ  
* ='1hvv/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j bT{K|d-  
*/ 6v%ePFul  
public void sort(int[] data) { $7Z-Nn38  
int temp; 6#jql  
for (int i = 0; i < data.length; i++) { %B1TN#KoT  
int lowIndex = i; < 0~1   
for (int j = data.length - 1; j > i; j--) { [x=(:soEqC  
if (data[j] < data[lowIndex]) { LN$T.r+  
lowIndex = j; d>MDC . j  
} tV pXA'"!x  
} X+u1p?  
SortUtil.swap(data,i,lowIndex); =\)zb'\=d  
} };P=|t(r  
} e~'z;% O~  
"dOQ)<;  
} d2U?rw_  
/ET+`=n  
Shell排序: LH_ U#P`E  
?< yYm;B  
package org.rut.util.algorithm.support; 8vR'<_>Q  
z9 #-  
import org.rut.util.algorithm.SortUtil; <ycR/X  
o F_{oV '  
/** Y1ca=ewFx  
* @author treeroot jxhZOLG  
* @since 2006-2-2 }?6;;d#  
* @version 1.0 pz/W#VN  
*/ ;iJxJX\+  
public class ShellSort implements SortUtil.Sort{ !.pcldx  
} C/+zF6q  
/* (non-Javadoc) l(F\5Ys  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }|M:MJ`  
*/ "szJ[ _B  
public void sort(int[] data) { GA[bo)"  
for(int i=data.length/2;i>2;i/=2){ c3#eL  
for(int j=0;j insertSort(data,j,i); H{9P=l  
} [wQJVYv  
} _.]mES|  
insertSort(data,0,1); {wz_ngQ  
} EDnZ/)6Gg  
p__N6a  
/** rL+.3ZO):P  
* @param data SGy2&{\Z  
* @param j H~Uy/22aQy  
* @param i (LXYx<  
*/ 1L7^g*  
private void insertSort(int[] data, int start, int inc) { y[AB,Dd  
int temp; uD{ xs  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ln , 9v  
} X+,0;% p  
} G7-k ,P^  
} ,BGUIu6  
o#z$LT1dY  
} 8)"lCIf  
xA-?pLt "G  
快速排序: i!RYrae  
}ksp(.}G  
package org.rut.util.algorithm.support; MujEjD "|  
+7_U( |gO  
import org.rut.util.algorithm.SortUtil; 0fUsERr1*  
&U}8@;  
/** *|C vK&7  
* @author treeroot -rgdKA@)(  
* @since 2006-2-2 5.yiNWh  
* @version 1.0 II~91IEk  
*/ : vgn0 IQ  
public class QuickSort implements SortUtil.Sort{ sD{Wc%5  
kw2d< I$]  
/* (non-Javadoc) 1_c%p#?K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GM)q\Hx{  
*/ 7ju38@+  
public void sort(int[] data) { jk\V2x@DR  
quickSort(data,0,data.length-1); Y"s8j=1m  
} WT1y7+_g(d  
private void quickSort(int[] data,int i,int j){ T 7qHw!)  
int pivotIndex=(i+j)/2; gLZJQubz 6  
file://swap anfnqa8  
SortUtil.swap(data,pivotIndex,j); #&L7FBJ"*v  
4ZR2U3jd1  
int k=partition(data,i-1,j,data[j]); 3=Rk(%:;  
SortUtil.swap(data,k,j); R1%J6wZq  
if((k-i)>1) quickSort(data,i,k-1); Q%J,: J  
if((j-k)>1) quickSort(data,k+1,j); S}]B|Q  
^\J-LU|"B  
} GY0OVAW6'c  
/** R2 J A(Hn  
* @param data 1 Qz@  
* @param i G^dzE/ :  
* @param j  P7/Xh3  
* @return E?BF8t_fTE  
*/ hy$VG%b;#  
private int partition(int[] data, int l, int r,int pivot) { OP-{76vE&b  
do{ \6"=`H0}  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +bJ~S:[  
SortUtil.swap(data,l,r); #,XZ@u+  
} aX |(%1r  
while(l SortUtil.swap(data,l,r); (FgX9SV]p9  
return l; ZB/1I;l`c  
} %Lh+W<;  
U&a(WQV9&  
} ~.0'v [N  
T*8K.yw2  
改进后的快速排序: 8HIX$OX>2  
$}z/BV1I  
package org.rut.util.algorithm.support; Wyeb1  
qZ@d:u  
import org.rut.util.algorithm.SortUtil; Q&?0 ^;r  
hJir_=  
/** FS!)KxC/-  
* @author treeroot gm!sLZ!X  
* @since 2006-2-2 elpTak@  
* @version 1.0 /_Ku:?{  
*/ ({!H ()  
public class ImprovedQuickSort implements SortUtil.Sort { j?k|-0  
87eH~&<1  
private static int MAX_STACK_SIZE=4096; h/8p2Mrqi  
private static int THRESHOLD=10; VhAJ1[k4!  
/* (non-Javadoc) pQC|_T#u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s| Q1;%T j  
*/ *n[B Bz  
public void sort(int[] data) { c813NHW  
int[] stack=new int[MAX_STACK_SIZE]; }4h0 {H  
NPM2qL9&J  
int top=-1; |k%1mE(+=s  
int pivot; 5 ddfdIp  
int pivotIndex,l,r; Ld/6{w4ir  
]IeLKcn  
stack[++top]=0; gMkSl8[  
stack[++top]=data.length-1; UK*v\TMv  
|GsMLY:0  
while(top>0){ M_2>b:#A*  
int j=stack[top--]; ?.lo[X<,*  
int i=stack[top--]; DBLM0*B  
zpeCT3Q5O  
pivotIndex=(i+j)/2; 'RzO`-dr  
pivot=data[pivotIndex]; u=vBjaN2_w  
gG}H5uN  
SortUtil.swap(data,pivotIndex,j); E'(nJ  
ZU+_nWnl  
file://partition /;1O9HJa  
l=i-1; Hz==,NR-W  
r=j; #:/27  
do{ ,&o^}TFkg  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _G'A]O/BZD  
SortUtil.swap(data,l,r); x#zj0vI-8  
} A,=> |&*  
while(l SortUtil.swap(data,l,r); u GqeT#dP  
SortUtil.swap(data,l,j); /{R.   
#M+_Lk3  
if((l-i)>THRESHOLD){ ^3H:I8gRCl  
stack[++top]=i; .]JIo&>5  
stack[++top]=l-1; T{"Ur :p  
} k*\)z\f  
if((j-l)>THRESHOLD){ gFu,q`Vf*  
stack[++top]=l+1; J]{<Z?%  
stack[++top]=j; z,2*3Be6V  
} $ Y^0l  
) jvI Nb  
} re}PpXRC  
file://new InsertSort().sort(data); 1,Mm+_)B  
insertSort(data); &/)B d%  
} 8"-=+w.CZ  
/** ~/z%yg  
* @param data ~w|h;*Bj  
*/ =l${p*ABQ  
private void insertSort(int[] data) { yG7H>LF?8  
int temp; %N`_g' r!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z9g6%RbwX  
} $?]`2*i  
} SBs!52  
} S_OtY]gF  
M6^ \LtFt  
} cL;%2TMk  
HX}B#T  
归并排序: /93z3o7D>  
A*81}P_  
package org.rut.util.algorithm.support; @o^$/AE?  
}HmkTk  
import org.rut.util.algorithm.SortUtil; P3Lsfi.  
'<uM\v^k  
/** o|c6=77043  
* @author treeroot vf+z0df  
* @since 2006-2-2 M"/Jn[  
* @version 1.0 jX(${j<  
*/ \)wch P_0  
public class MergeSort implements SortUtil.Sort{ vq+CW?*"  
 (FaYagD  
/* (non-Javadoc) =s]2?m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bM:4i1Z  
*/ x;E/  
public void sort(int[] data) { g}gGm[1SUo  
int[] temp=new int[data.length]; m{X{h4t  
mergeSort(data,temp,0,data.length-1); Dc$q0|N=z  
} Pc< "qy  
:9%e:-  
private void mergeSort(int[] data,int[] temp,int l,int r){ ~_N,zw{x  
int mid=(l+r)/2; z>,M@@  
if(l==r) return ; d,(q 3  
mergeSort(data,temp,l,mid); U1E@pDH  
mergeSort(data,temp,mid+1,r); v {uq  
for(int i=l;i<=r;i++){ .35~+aqC  
temp=data; xE^G*<mj:  
} vcp{Gf|^  
int i1=l; ~O PBZ#  
int i2=mid+1; Y;huTZ  
for(int cur=l;cur<=r;cur++){ <HN+pi  
if(i1==mid+1) a=A12<  
data[cur]=temp[i2++]; p I8z.JD  
else if(i2>r) ]Sa#g&}T>  
data[cur]=temp[i1++]; 8]`s&d@GY  
else if(temp[i1] data[cur]=temp[i1++]; GIcq|Pe  
else yUpN`;  
data[cur]=temp[i2++]; -s`Wd4AP  
} a3\~AO H%  
} ,IqE<i!U  
!&g_hmnIF  
} ,pdzi9@=t  
&y=OZ !M  
改进后的归并排序: `Ds=a`^b  
mI4GBp  
package org.rut.util.algorithm.support; kc P ZIP:  
W)/f5[L  
import org.rut.util.algorithm.SortUtil; 8~R.iqLoX  
e@0|fB%2  
/** knG:6tQ  
* @author treeroot Q[K$f%>  
* @since 2006-2-2 3ej237~F,L  
* @version 1.0 ]GY8f3~|{  
*/ ~/-SKGzo-  
public class ImprovedMergeSort implements SortUtil.Sort { ;nW;M 4{  
R3lZ|rxv:  
private static final int THRESHOLD = 10; ecz-jZ! `  
Y,Z$U| U  
/* stUv!   
* (non-Javadoc) xW5`.^5  
* [m h>N$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YtSYe%  
*/ |gP)lR  
public void sort(int[] data) { *P/A&"i[E  
int[] temp=new int[data.length]; l9=Ka{$^*  
mergeSort(data,temp,0,data.length-1); S|k@D2k=  
} 9ck"JMla  
VV/T)qEe7>  
private void mergeSort(int[] data, int[] temp, int l, int r) { .[]S!@+%  
int i, j, k; P[q>;Fx*  
int mid = (l + r) / 2;  ArAe=m!u  
if (l == r) JvW7h(u7g  
return; ~( XaXu  
if ((mid - l) >= THRESHOLD) \EoE/2"<  
mergeSort(data, temp, l, mid); B F gxa#De  
else nKr'cb  
insertSort(data, l, mid - l + 1); .u#Hg'oP  
if ((r - mid) > THRESHOLD) ; I-6H5  
mergeSort(data, temp, mid + 1, r); T5ky:{Y(  
else R$ +RTG:E  
insertSort(data, mid + 1, r - mid); ojf6@p_  
<5pNFj}0;X  
for (i = l; i <= mid; i++) { Tr:@Dv.O  
temp = data; oYf+I  
} a BMV6'  
for (j = 1; j <= r - mid; j++) { S$fS|N3]%  
temp[r - j + 1] = data[j + mid]; jFe8s@7  
} vvxD}p=y  
int a = temp[l]; L v/}&'\(  
int b = temp[r]; u;rmqo1  
for (i = l, j = r, k = l; k <= r; k++) { 5~DKx7P!Z  
if (a < b) { L3wj vq^  
data[k] = temp[i++]; ]oSx]R>{f  
a = temp; YQ d($  
} else { fcF|m5  
data[k] = temp[j--]; NJr)f  
b = temp[j]; S>(xx"Ia  
} FO^6c  
} Oi:Hs  
} uIO,9> ee  
[j@i^B &  
/** zzI,iEG  
* @param data 9M9Fif.  
* @param l F#<:ZByjJ@  
* @param i 2D"my]FnF  
*/ `V V >AA5  
private void insertSort(int[] data, int start, int len) { M$ieM[_T  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *'aJO }$  
} +,)k@OI  
} ll$mRC  
} uuFQTx))  
} &o t^+uVH  
<>n|_6'$90  
堆排序: 7i xG{yu  
kDm uj>D  
package org.rut.util.algorithm.support; vqf}(/.D  
$+4 4US  
import org.rut.util.algorithm.SortUtil; [3-u7Fx!  
.Er+*j;&w  
/** 1/:vFX  
* @author treeroot 6-"tQ,AZ  
* @since 2006-2-2 diM*jN#  
* @version 1.0 s-WZ3g  
*/ jJ<&!=  
public class HeapSort implements SortUtil.Sort{ '\8YH+%It  
[Ca''JqrA  
/* (non-Javadoc) l6WEx -d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DU"Gz!X]Jd  
*/ |iBf6smF  
public void sort(int[] data) { F{ vT^/  
MaxHeap h=new MaxHeap(); Y&=DjKoVh  
h.init(data); a9NuYYr,h  
for(int i=0;i h.remove(); <BBzv-?D  
System.arraycopy(h.queue,1,data,0,data.length); +0ukLc@  
} .{8[o[w =  
~$4(|Fq/  
private static class MaxHeap{ P(8Yz W  
_7:Bxx4B  
void init(int[] data){ dPpQCx f  
this.queue=new int[data.length+1]; ~x'8T!M{  
for(int i=0;i queue[++size]=data; b&h'>(  
fixUp(size); ]=-=D9ZS3  
} [Fag\/Y+  
}  8(K:2  
,R-k]^O  
private int size=0; xu-bn  
mk~CE  
private int[] queue; L6nsVL&  
F^Jz   
public int get() { k^K76mB  
return queue[1]; cL4Go,)w  
} @YaI5>,/  
pd:YR;  
public void remove() { AG vhSd7  
SortUtil.swap(queue,1,size--); vYXhWqL~  
fixDown(1); t d\gk  
} 8lqmd1v  
file://fixdown 6 A]a@,PC  
private void fixDown(int k) { 3*%+NQIj  
int j; RfvvX$  
while ((j = k << 1) <= size) { #X*);cn  
if (j < size %26amp;%26amp; queue[j] j++; ^hZ0"c  
if (queue[k]>queue[j]) file://不用交换 1nvT={'R  
break; [Pp#r&4H  
SortUtil.swap(queue,j,k); *!`&+w  
k = j; +[n#{;]<  
} v.:Q& ]  
} `/R. 5;$|  
private void fixUp(int k) { Pr%KcR ;  
while (k > 1) { "-Ny f  
int j = k >> 1; ; Gv-$0{P3  
if (queue[j]>queue[k]) g6DIWMoO=h  
break; gk8 v{'0Er  
SortUtil.swap(queue,j,k); 7vPG b:y  
k = j; 8|i<4>  
} c%b|+4 }x  
} 7],y(:[=v  
P;gd!Yl<-  
} {*hGe_^  
{y@8E>y5$  
} _hJ+8B^`  
OC,yLQ  
SortUtil: 94 6r#`q  
e"sv_$*  
package org.rut.util.algorithm; #;8VBbc\^  
>HwVP.~HN  
import org.rut.util.algorithm.support.BubbleSort; d<=!*#q;o  
import org.rut.util.algorithm.support.HeapSort; 3My}u>  
import org.rut.util.algorithm.support.ImprovedMergeSort; wt@TR~a  
import org.rut.util.algorithm.support.ImprovedQuickSort; [N[4\W!!  
import org.rut.util.algorithm.support.InsertSort; 0lq?l:/  
import org.rut.util.algorithm.support.MergeSort; Bo ywgL|  
import org.rut.util.algorithm.support.QuickSort; 6f#Mi+"  
import org.rut.util.algorithm.support.SelectionSort; Moi RAO  
import org.rut.util.algorithm.support.ShellSort; GYJ j$'  
&y73^"%  
/** ia /#`#.  
* @author treeroot QjpJIw  
* @since 2006-2-2 "BpDlTYM  
* @version 1.0 "#8^":,4  
*/ oLlfqV,|L\  
public class SortUtil { oGeV!hD  
public final static int INSERT = 1; s` , g4ce`  
public final static int BUBBLE = 2; r_bG+iw7p  
public final static int SELECTION = 3; >N`, 3;Z  
public final static int SHELL = 4; 4C:dkaDq]  
public final static int QUICK = 5; {4[dHfIy  
public final static int IMPROVED_QUICK = 6; +W-b3R:1>  
public final static int MERGE = 7; z8D,[`  
public final static int IMPROVED_MERGE = 8; I) *J,hs1  
public final static int HEAP = 9; =:R${F  
dYwEVu6q  
public static void sort(int[] data) { 9~K>c  
sort(data, IMPROVED_QUICK); U/v)6:j)4R  
} %M^Q{` :5  
private static String[] name={ Ym -U{a  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"  =/ !A  
}; 0@u{(m  
~_ovQ4@  
private static Sort[] impl=new Sort[]{ Ft:_6T%  
new InsertSort(), :m'(8s8  
new BubbleSort(), Bv*VNfUm  
new SelectionSort(), %%wngiz\  
new ShellSort(), nddCp~NX  
new QuickSort(), qM^y@B2MO  
new ImprovedQuickSort(), RJT55Rv{  
new MergeSort(), m^/>C -&C  
new ImprovedMergeSort(), *z~J ]  
new HeapSort() 4 #lLC-k  
}; y^{ 4}^u-^  
\j we  
public static String toString(int algorithm){ 0U.Ld:  
return name[algorithm-1]; @JP6F[d  
} 5*B'e{C  
^ 6t"A  
public static void sort(int[] data, int algorithm) { Cf<TDjU`|  
impl[algorithm-1].sort(data); xw1,Wbu]  
} EW)r/Av:,  
kAx J#RG  
public static interface Sort { OWYY2&.h  
public void sort(int[] data); dj6Lf  
} fl_a@QdB#  
'P&r^V\~(/  
public static void swap(int[] data, int i, int j) { mII8jyg*c  
int temp = data; \naG  
data = data[j]; :2{ [f+  
data[j] = temp; V*6&GM&  
} 98{n6$\  
} GapH^trm  
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