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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。 /57)y_ \  
插入排序: ()@+QE$  
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package org.rut.util.algorithm.support; e5cvmUF_W  
/ =:X,^"P  
import org.rut.util.algorithm.SortUtil; c< g{ &YJ  
/** as@I0e((  
* @author treeroot ?s{Pp  
* @since 2006-2-2 5A"OL6ty  
* @version 1.0 -B#>Jn#F  
*/ '\Hh  
public class InsertSort implements SortUtil.Sort{ U_Va'7  
sZ7BBJX2K  
/* (non-Javadoc) v!?>90a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  jQ?6I1o  
*/ I=yy I  
public void sort(int[] data) { q\\52 :\  
int temp; H9T'{R*FC  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X9n},}bJ"  
} cH\.-5NQ  
} |=4imM7  
} `Jon^&^;|  
2UjQ!g`  
} *.NVc  
k:kx=K5=4  
冒泡排序: 1C\[n(9  
<al/>7z' O  
package org.rut.util.algorithm.support; 9mH/xP:y  
\P0>TWE  
import org.rut.util.algorithm.SortUtil; M&K'5G)7  
PaYsn *{})  
/** 5J8U] :Y)  
* @author treeroot Qa=v }d-O  
* @since 2006-2-2 gS4@3BOw&.  
* @version 1.0 {%3sj"suB  
*/ f\gN+4)  
public class BubbleSort implements SortUtil.Sort{ +&hd3  
bIahjxd:  
/* (non-Javadoc) g)#neEA J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q~:k[@`.  
*/ {kgV3 [%>  
public void sort(int[] data) { 2_lb +@[W  
int temp; ey>V^Fj  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8!{F6DG  
if(data[j] SortUtil.swap(data,j,j-1); ^< O=<tN\  
} MHkTN  
} Kr'5iFK7  
} $&iw(BIq  
} %B'*eBj~fw  
-5t .1/  
} DkGC+Dw  
!Wz%Hy:ZK  
选择排序: !r*Ogv[  
\sZ!F&a~  
package org.rut.util.algorithm.support; 0(!D1G{ul  
;y"q uJ'O  
import org.rut.util.algorithm.SortUtil; &c)n\x*  
=tE7XC3X_  
/** \d#|n u  
* @author treeroot jN43vHm\Y9  
* @since 2006-2-2 7Z+4F=2ff  
* @version 1.0 m.A_u7D@  
*/ 1FiFP5  
public class SelectionSort implements SortUtil.Sort { K7H` Yt  
(\<#fkeH  
/* CPCjY|w7   
* (non-Javadoc) .A`Q!  
* 2'zYrdem  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +5:oW~ ;  
*/ yY$:zc"J  
public void sort(int[] data) { yH0BNz8V  
int temp; E/</  
for (int i = 0; i < data.length; i++) { -_RMiGM?T  
int lowIndex = i; b-rgiR$cg  
for (int j = data.length - 1; j > i; j--) { QK3j.Ss  
if (data[j] < data[lowIndex]) { 6Tn.56X  
lowIndex = j; xG^6'<  
} DPE]<oM  
} pO.+hy  
SortUtil.swap(data,i,lowIndex); s*k[Fbi  
} 9$pQ|e0tJ  
} HTz&h#)JQ  
5[_|+  
} '%$)"g]/#  
#sK:q&/G`  
Shell排序: l |c#  
M/X&zr  
package org.rut.util.algorithm.support; *uq;O*s  
O%.c%)4Xo  
import org.rut.util.algorithm.SortUtil; pLvvv#Y  
`|\z#Et  
/** ;LM,<QJ  
* @author treeroot 7LM?<lp]  
* @since 2006-2-2 ersddb^J]  
* @version 1.0 Rs<li\GS  
*/ o0Y {k8  
public class ShellSort implements SortUtil.Sort{ m4.IaBn/  
kCWaji_x%  
/* (non-Javadoc) <TL!iM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l H@hV  
*/ J~3+j6?%  
public void sort(int[] data) { 6 ZutU ~HS  
for(int i=data.length/2;i>2;i/=2){ I'M,p<B  
for(int j=0;j insertSort(data,j,i); G:HPd.ay  
} JlZU31Xws  
} %4/>7 aB]Y  
insertSort(data,0,1); _{fh/{b1  
} <lj;}@qQ<  
f?OFMac  
/** Ungex@s_  
* @param data ([y2x.kd  
* @param j Ydw04WEJ  
* @param i _<`j?$P  
*/ t7"vAjZU  
private void insertSort(int[] data, int start, int inc) { Uk=-A @q  
int temp; gn>qd6P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); bcp+7b(IB  
} 1Z5:D E<  
} [J'O5" T  
} FaOfe]F  
|]tIE{d  
} FOAy'76p  
VfK8')IXk  
快速排序: DeTx7i0  
xWv@PqXD  
package org.rut.util.algorithm.support; $n30[P@p;  
3_:J`xX(4  
import org.rut.util.algorithm.SortUtil; D\}A{I92F4  
TmZ% ;TN  
/** {_GhS%  
* @author treeroot UQmdm$.  
* @since 2006-2-2 bT^6AtsJ  
* @version 1.0 =.Tc l"O[  
*/ %jgB;Y  
public class QuickSort implements SortUtil.Sort{ }0& @J'<  
5.KhI<[  
/* (non-Javadoc) |;XkU`G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2WK]I1_  
*/ i$GL]0  
public void sort(int[] data) { Cpm&w?6  
quickSort(data,0,data.length-1); r~&[Gaw  
} Q Q3a&  
private void quickSort(int[] data,int i,int j){ g]sc)4  
int pivotIndex=(i+j)/2; 8J}gj7^8  
file://swap osS?SuQTE  
SortUtil.swap(data,pivotIndex,j); JVPl\I  
u|v2J/_5Y  
int k=partition(data,i-1,j,data[j]); 9A@/5Z:v5W  
SortUtil.swap(data,k,j); s  bl> i  
if((k-i)>1) quickSort(data,i,k-1); B:-qUuS?R  
if((j-k)>1) quickSort(data,k+1,j); #nTzn2  
;<j[0~qp:  
} ?Vy% <f$  
/** lV4|(NQ9  
* @param data vkFq/+'U  
* @param i `Ap<xT0H  
* @param j MN wMF  
* @return }YiE} +VW|  
*/ D%CKkQ<u2  
private int partition(int[] data, int l, int r,int pivot) { tVB9kxtE  
do{ f-lM[\ma_  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); IY Ilab\TZ  
SortUtil.swap(data,l,r); 1{ TmK9U  
} =0Z^q0.  
while(l SortUtil.swap(data,l,r); FaNr}$Pe  
return l; >l<`)4*H  
} op\'T;xIu  
3#O R fr(  
} m&o6j>C  
xc4g`Xi  
改进后的快速排序: _$g2;X >  
(!^i6z0Sp  
package org.rut.util.algorithm.support; E}7@?o7u}  
N- !>\n  
import org.rut.util.algorithm.SortUtil; v}vwk8  
l70a&[W  
/** avJ%J"j8z  
* @author treeroot TuF;>{~}  
* @since 2006-2-2 ,".1![b  
* @version 1.0 qL;OE.?oA  
*/ P2U^%_~  
public class ImprovedQuickSort implements SortUtil.Sort {  `7v"(  
>(>,*zP<9  
private static int MAX_STACK_SIZE=4096; xL-]gwq  
private static int THRESHOLD=10; JDp"!x{O  
/* (non-Javadoc) zEHX:-f8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <'{*6f@n  
*/ 6ol*$Q"z  
public void sort(int[] data) { 'T!^H  
int[] stack=new int[MAX_STACK_SIZE]; Pdq}~um3{  
/2%646  
int top=-1; })v`` +  
int pivot; O[$,e%  
int pivotIndex,l,r; NNOemTh  
rKhhx   
stack[++top]=0; 0| a,bwZ  
stack[++top]=data.length-1; mE|?0mRA %  
zl a^j,  
while(top>0){ SauX C  
int j=stack[top--]; RgB5'$x}  
int i=stack[top--]; Mj9Mv<io  
G+?Z=A:T8  
pivotIndex=(i+j)/2; <D_UF1Pk  
pivot=data[pivotIndex]; ?pBQaUl&  
y'$R e  
SortUtil.swap(data,pivotIndex,j); Fv| )[>z0  
2LO8SJ#  
file://partition I34|<3t$  
l=i-1; 8@$`'h^6  
r=j; uWtj?Q+M|  
do{ ZNHlq5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,/oqLI\  
SortUtil.swap(data,l,r); `RF0%Vm~t  
} ,Y) 7M3I  
while(l SortUtil.swap(data,l,r); _Se0,Uns  
SortUtil.swap(data,l,j); C\3;o]  
&U.U<  
if((l-i)>THRESHOLD){ |TQ#[9C0  
stack[++top]=i; 0~/'c0Ho  
stack[++top]=l-1; 3A`|$So  
} 4r+@7hnK  
if((j-l)>THRESHOLD){ %1oh+'ES F  
stack[++top]=l+1; sGAOK%28  
stack[++top]=j; %0y_WIjz  
} D1ep7ykY  
43'!<[?x  
} ro %Jg  
file://new InsertSort().sort(data); [C>>j;q%  
insertSort(data); AG Ws>  
} xWiR7~E  
/** fk6`DUBV  
* @param data ZC99/NWN  
*/ v,[E*qMN  
private void insertSort(int[] data) { sB~|V <  
int temp; H;1_"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ha)Vf+W  
} v@&UTU  
} ;h7W(NO~z  
} D8rg:,'6  
dvW2X  
} *!m\%*y{  
-/g<A~+i]$  
归并排序: Sc.@u3  
1_=I\zx(  
package org.rut.util.algorithm.support; "hbCP4  
u3G.xlHH[  
import org.rut.util.algorithm.SortUtil; |7$Q'3V  
B - 1Kfc  
/** D;Bij=  
* @author treeroot Qo5yfdR  
* @since 2006-2-2 fe3a_gYPz  
* @version 1.0 \ cr)O^&  
*/ (i1q".  
public class MergeSort implements SortUtil.Sort{ ,6EFJVu \  
@'> Ul!.]  
/* (non-Javadoc) )8JfBzR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RSTA!?K/.  
*/ |uIgZ|7[  
public void sort(int[] data) { ,SF>$ .  
int[] temp=new int[data.length]; gb^<6BYUG  
mergeSort(data,temp,0,data.length-1); EK%J%NY  
} VE $Kdo^  
r,r"?}Z  
private void mergeSort(int[] data,int[] temp,int l,int r){ ty>9i]Y-  
int mid=(l+r)/2; u[<ij  
if(l==r) return ; h N U.y  
mergeSort(data,temp,l,mid); Y(/y,bJ?jp  
mergeSort(data,temp,mid+1,r); k^{}p8;3  
for(int i=l;i<=r;i++){ SR$?pJh D%  
temp=data; %_L~"E 2e  
} O' ~>AC5{  
int i1=l; INRP@Cp1  
int i2=mid+1; PiVp(; rtQ  
for(int cur=l;cur<=r;cur++){ KKRj#m(:!  
if(i1==mid+1) 7%sx["%@  
data[cur]=temp[i2++]; )F\^-laMuK  
else if(i2>r)  oB8LJZ;  
data[cur]=temp[i1++]; ml1My1  
else if(temp[i1] data[cur]=temp[i1++]; mD_sf_2>  
else ?X'l&k>  
data[cur]=temp[i2++]; NtDxwzj  
} dsG:DS`q  
} hcT5>w[  
"+Kp8n6  
} 6 9s%   
XE`u  
改进后的归并排序: <Em|0hth  
}08Sv=XM  
package org.rut.util.algorithm.support; 68()2v4X  
G2s2i2& 6E  
import org.rut.util.algorithm.SortUtil; 6[3>[ej:x  
j\\uW)ibG  
/** Vwpy/5Hmp  
* @author treeroot n48%Uwa,  
* @since 2006-2-2 ) :st-I!o  
* @version 1.0 WxJV zHtR  
*/ El^V[s'3  
public class ImprovedMergeSort implements SortUtil.Sort { EG J/r  
>*1YL)DBT\  
private static final int THRESHOLD = 10; QD;:!$Du  
k0IztFyj:R  
/* dk_! ~Z  
* (non-Javadoc) wl0i3)e:  
*  r<1.'F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /y3Lc.-  
*/ }PX8#C_P  
public void sort(int[] data) { M6lNdK  
int[] temp=new int[data.length]; @^t1SPp  
mergeSort(data,temp,0,data.length-1);  bE%*ZB  
} 1UN$eb7  
>l=;6QL  
private void mergeSort(int[] data, int[] temp, int l, int r) { | E\u  
int i, j, k; vxk~( 3]<)  
int mid = (l + r) / 2; C[[:/X(c  
if (l == r) 3a?dNwM@  
return; .|/VD'xV"  
if ((mid - l) >= THRESHOLD) [u;>b?[{  
mergeSort(data, temp, l, mid); o(@^V!}V  
else 2SXy)m !  
insertSort(data, l, mid - l + 1); t $u.  
if ((r - mid) > THRESHOLD) Io4Ss1="  
mergeSort(data, temp, mid + 1, r); uC5W1LyI  
else p&lT! 5P!A  
insertSort(data, mid + 1, r - mid); PcEE@W9  
jP )VTk_  
for (i = l; i <= mid; i++) { \os"j  
temp = data; **~1`_7~*  
} P] Xl  
for (j = 1; j <= r - mid; j++) { o>y@1%aU  
temp[r - j + 1] = data[j + mid]; dG%{&W9  
} )dF`L  
int a = temp[l]; FJIo] p  
int b = temp[r]; MmW]U24s  
for (i = l, j = r, k = l; k <= r; k++) {  Eikt,  
if (a < b) { Jzj>=jWX@  
data[k] = temp[i++]; c{\x< AwO  
a = temp; ;*>':-4  
} else { 7D=gAMPvJ  
data[k] = temp[j--]; im@c||  
b = temp[j]; >]/aG!  
} c#T0n !}  
} S*(n s<L  
} uE&2M>2  
F>"B7:P1:Q  
/** nT%<!/}!  
* @param data s%@HchZ 1  
* @param l AxiCpAS;J  
* @param i t ybM3VA  
*/ RO8]R2A  
private void insertSort(int[] data, int start, int len) { ;s w3MRJ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'ExTnv ~  
} pTE.,~-J^j  
} B0ZLGB  
} vf h*`G$  
} ]3~X!(O  
1*]@1DJt  
堆排序: F5YHc$3^  
=f=,YcRn+  
package org.rut.util.algorithm.support; 3NlG,e'T2  
'9 Xw_1B  
import org.rut.util.algorithm.SortUtil; OYY_@'D  
QUi=ZD1  
/** jHM}({)-  
* @author treeroot 1w|u ^[~u\  
* @since 2006-2-2 W4rh7e4  
* @version 1.0 Nq ZR*/BOz  
*/ oU)HxV  
public class HeapSort implements SortUtil.Sort{ XO"BEj<x  
ziG]BZ  
/* (non-Javadoc) ~MZ.988:<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y[`%j\=  
*/ m^Rf6O^  
public void sort(int[] data) { k4BiH5\hA  
MaxHeap h=new MaxHeap(); \++#adN:K  
h.init(data); KL+,[M@ F  
for(int i=0;i h.remove(); i`vgD<}  
System.arraycopy(h.queue,1,data,0,data.length);  nCSXvd/  
} R\>=}7  
.6y(ox|LL  
private static class MaxHeap{ x#TWZ;  
m| k:wuzqK  
void init(int[] data){ :t6.J  
this.queue=new int[data.length+1]; /r mm@  
for(int i=0;i queue[++size]=data; !_LRuqQ?"  
fixUp(size); D(^ |'1  
} ~e R6[;  
} 5wGc"JHm  
bcE%EQ  
private int size=0; \&1Di\eL  
q@&.)sLPgO  
private int[] queue; UZ3oc[#D=]  
=]hPX  
public int get() { =U<6TP]{  
return queue[1]; m/>z}d05h  
} A]mXV4RmI  
jBnvu@K"  
public void remove() { x#&%lJT  
SortUtil.swap(queue,1,size--); 7Jvb6V<R  
fixDown(1); PU{7s  
} ]QK@zb}x  
file://fixdown 9lCZ i?  
private void fixDown(int k) { 1 Ll<^P  
int j; {;Ispx0m  
while ((j = k << 1) <= size) { h?2:'Vu]  
if (j < size %26amp;%26amp; queue[j] j++; K)8N8Js(  
if (queue[k]>queue[j]) file://不用交换 F` gQ[  
break; nLv"ON~  
SortUtil.swap(queue,j,k); yct^AN|%  
k = j; /Jw 65 e  
} 4e5 5  
} H:&|q+K=#  
private void fixUp(int k) { >XiTl;UU  
while (k > 1) { ~pj/_@S@x  
int j = k >> 1; lhLE)B2a2  
if (queue[j]>queue[k]) K/+w6d  
break; %b(non*  
SortUtil.swap(queue,j,k); 9t^Q_[hG  
k = j; p?+*R@O  
} 97n@HL1  
} iPoDesp  
^GN|}W  
} 6Y(Vs>  
^qD@qJ  
} C!r9+z)<  
@x z?^20N  
SortUtil: d %Z+.O  
@f wk  
package org.rut.util.algorithm; !O~5<tA[#1  
^@0-E@ {c  
import org.rut.util.algorithm.support.BubbleSort; D/=  AU  
import org.rut.util.algorithm.support.HeapSort; auP6\kpMe  
import org.rut.util.algorithm.support.ImprovedMergeSort; yhi6RDS  
import org.rut.util.algorithm.support.ImprovedQuickSort; NiTLQ"~e  
import org.rut.util.algorithm.support.InsertSort; 3d0Yq  
import org.rut.util.algorithm.support.MergeSort; q[w.[]  
import org.rut.util.algorithm.support.QuickSort; dJ0qg_ U&  
import org.rut.util.algorithm.support.SelectionSort; ;+/[<bvd"  
import org.rut.util.algorithm.support.ShellSort; E6NrBPm  
NFQR  
/** JZ  
* @author treeroot %7*Y@k-)o  
* @since 2006-2-2 ? m$7)@p  
* @version 1.0 p&%M=SzN  
*/ 6s"Erq5q  
public class SortUtil { j 4B|ktf  
public final static int INSERT = 1; #n_uELE  
public final static int BUBBLE = 2; 5c~OG6COx  
public final static int SELECTION = 3; 1li1&  
public final static int SHELL = 4; `RG_FS"v  
public final static int QUICK = 5; r ]cC4%in  
public final static int IMPROVED_QUICK = 6; mfNYN4Um6  
public final static int MERGE = 7; )@]Y1r4U  
public final static int IMPROVED_MERGE = 8; *&vySyt  
public final static int HEAP = 9; {,|J?>{  
nPj+mg  
public static void sort(int[] data) { S}rW=hO  
sort(data, IMPROVED_QUICK); !PfIe94{`  
} Hlw0i a  
private static String[] name={ 9x~qcH%  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jR^>xp;  
}; 79>8tOuo  
\gE3wmSJ,  
private static Sort[] impl=new Sort[]{ kS$HIOt823  
new InsertSort(), MO{6B#(<F  
new BubbleSort(), k-( hJ}N  
new SelectionSort(), I<I?ks  
new ShellSort(), Qhd~4  
new QuickSort(), z.9 #AN=&[  
new ImprovedQuickSort(), S:UtmS+K  
new MergeSort(), 7b_Ihv   
new ImprovedMergeSort(), J!@$lyH  
new HeapSort() |xTf:@hgHf  
}; l/BE~gdl  
\@kY2,I V  
public static String toString(int algorithm){ wNuS'P_(:T  
return name[algorithm-1]; ?^F#}>C  
} h<wF;g,  
XB &-k<C  
public static void sort(int[] data, int algorithm) { )p MZ5|+X  
impl[algorithm-1].sort(data); VK+#!!Ha  
} z^/aJ@gQ  
w@P c7$EP  
public static interface Sort { 5@+8*Fdk  
public void sort(int[] data); UN&b]vg  
} f.gkGwNk  
-4JdK O  
public static void swap(int[] data, int i, int j) { 9Q".166  
int temp = data; >s E5zj|V  
data = data[j]; N~ -N Q  
data[j] = temp; %^=fjJGV{~  
} Fc;)p88[  
} `A\ !Gn?   
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