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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。 5(q\x(N  
插入排序: 9E)*X  
8)ZWR3)+W  
package org.rut.util.algorithm.support; -20o%t  
e]!Vxn3  
import org.rut.util.algorithm.SortUtil; %h=)>5-T  
/** kX zm  
* @author treeroot  g2L  
* @since 2006-2-2 AT}}RE@vq  
* @version 1.0 5Qd |R  
*/ 5)' _3r  
public class InsertSort implements SortUtil.Sort{ x=Qy{eIe  
=xQ 7:TB  
/* (non-Javadoc) fs&J%ku\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ( t#w@<  
*/ ^+oi|y  
public void sort(int[] data) { vC E$)z'"  
int temp; m~1{~'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); TC?kuQI  
} qe 4hNFq  
} JiEcPii  
} lAJ)  
9vWKyzMi  
} Zq~2BeB  
q@F"fjWBr  
冒泡排序: Jy@cMq2  
YN?@ S  
package org.rut.util.algorithm.support; L!V`Sb  
h?j;*|o-  
import org.rut.util.algorithm.SortUtil; A^q= :ofQ  
.{`+bT^b<2  
/** qGuz`&i  
* @author treeroot ,pa,:k?  
* @since 2006-2-2 0 lXV+lj  
* @version 1.0 nL5Gr:SLo  
*/ `IOp*8  
public class BubbleSort implements SortUtil.Sort{ p^Ca-+R3  
EJjTf:  
/* (non-Javadoc) ;38W41d{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :^0g}8$<  
*/ y$r^UjJEO  
public void sort(int[] data) { MG>g?s'!  
int temp; t;Jt+k~  
for(int i=0;i for(int j=data.length-1;j>i;j--){ IJ!]1fXy+  
if(data[j] SortUtil.swap(data,j,j-1); |xZDc6HDW  
} 33J}AK^FE  
} 9-o{[  
} )b m|],'  
} uYIw ?fXy  
yiQke   
} v\rOs+.s  
uEWWY t  
选择排序: +cvz  
GsqR8n=  
package org.rut.util.algorithm.support; vVc:[i  
Z{+h~?63  
import org.rut.util.algorithm.SortUtil; Y:&1;`FBZ  
K6KEdXM4  
/** cCFSPT2fq[  
* @author treeroot k^Tu9}[W1  
* @since 2006-2-2 O}NR{B0B3&  
* @version 1.0 m}:";>?#  
*/ 2n?\tOm(V  
public class SelectionSort implements SortUtil.Sort { &~pj)\_  
IE$x2==)  
/* 6T< ~mn  
* (non-Javadoc) @pQv}%  
* HQ7-,!XO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vF;6Y(h>  
*/ tirw{[X0n  
public void sort(int[] data) { [T"oqO4%]  
int temp; ^8.R 'Yq  
for (int i = 0; i < data.length; i++) { ~ i1w,;(  
int lowIndex = i; l"}W $3]u$  
for (int j = data.length - 1; j > i; j--) { z~4L=tA(  
if (data[j] < data[lowIndex]) { ^c< <I-o|  
lowIndex = j; ?Ee?Ol?i2  
} _S8]W !c  
} Il2DZ5- )  
SortUtil.swap(data,i,lowIndex); -kES]P?2  
} idGkX ?  
} &_,^OE}K_:  
rr3NY$W  
} j_&/^-;e  
4S  2I]d  
Shell排序: 7$x@;%xd  
-2v|d]3qG  
package org.rut.util.algorithm.support;  ^wb -s  
si=/=h  
import org.rut.util.algorithm.SortUtil; \4K8*`$  
b6bmvHD  
/** Mki(,Y|1~  
* @author treeroot cy)L%`(7  
* @since 2006-2-2 sa#=#0yg  
* @version 1.0 $MKx\qx}  
*/ on*?O O'  
public class ShellSort implements SortUtil.Sort{ V?Lf& X?  
o80pmy7@  
/* (non-Javadoc) x?:WR*5w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g0rdF  
*/ ex'd^y  
public void sort(int[] data) { #Q 2$v;  
for(int i=data.length/2;i>2;i/=2){ >G' NI?$  
for(int j=0;j insertSort(data,j,i); `C=!8q  
} dulW!&*No  
} $msT,$NJ  
insertSort(data,0,1); da\K>An>  
} s?~Abj_  
dT/Cn v=  
/** uz>s2I}B  
* @param data m{pL< g^M  
* @param j (oq(-Wv  
* @param i @WhcY*R2  
*/ akm)X0!-}  
private void insertSort(int[] data, int start, int inc) { xVfJ ]Y  
int temp; QlJCdCSy  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); W}Nd3  
} 2r?g|< :  
} q5lRc=.b[  
} Cd7 j G  
Se"\PxBR  
} IZJV6clM  
TUy*wp9  
快速排序: |YZ`CN<  
fQ#mx.|8y  
package org.rut.util.algorithm.support; &^9f)xb  
cJ!wZT`  
import org.rut.util.algorithm.SortUtil; 70 HEu@-  
}xLwv=Ia  
/** 8k_,Hni  
* @author treeroot S wC,=S  
* @since 2006-2-2 *sAoYx  
* @version 1.0 xhUQ.(S`r6  
*/ 8Y5* 1E*  
public class QuickSort implements SortUtil.Sort{ rRT9)wDa  
b\=0[kBQw  
/* (non-Javadoc) ;a{ Dr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C9gF2ii|?  
*/ deHBY4@  
public void sort(int[] data) { ywq{9)vq  
quickSort(data,0,data.length-1); !G\1$"T$  
} 8"oS1W  
private void quickSort(int[] data,int i,int j){ w$Dp m.0(  
int pivotIndex=(i+j)/2;  V}8J&(\  
file://swap >/e#Z h  
SortUtil.swap(data,pivotIndex,j); ]lz,?izMR  
>:OOuf#  
int k=partition(data,i-1,j,data[j]); YI%7#L7C  
SortUtil.swap(data,k,j); Oq+C<}eg  
if((k-i)>1) quickSort(data,i,k-1); V_+3@C  
if((j-k)>1) quickSort(data,k+1,j); %3xH<$Gq5  
v{JCEb&wN  
} .]r[0U  
/** _ esFx  
* @param data aMv  
* @param i sB7DF<91  
* @param j D3XQ>T[*q  
* @return EVb'x Zr  
*/ %NeKDE  
private int partition(int[] data, int l, int r,int pivot) { !Toq~,a8?  
do{ Yv"uIj+']  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ANT^&NjJ7  
SortUtil.swap(data,l,r); Jb ;el*,K  
} >^<qke  
while(l SortUtil.swap(data,l,r); '?3Hy|}  
return l; 3D<P [.bS  
} 2jx""{  
/^4)V8D_S  
} 4`Fbl]Q   
%}j/G l5  
改进后的快速排序: [c>X Q  
Onot<}K  
package org.rut.util.algorithm.support; *:YW@Gbm  
SvI  
import org.rut.util.algorithm.SortUtil;  zKT \i  
N66jFRA;x  
/** x!I7vs~~zW  
* @author treeroot  |2n2  
* @since 2006-2-2 >{m>&u;Cc  
* @version 1.0 0Fbq/63  
*/ /eIwv 31  
public class ImprovedQuickSort implements SortUtil.Sort { l l&iMj]  
>St  
private static int MAX_STACK_SIZE=4096; c:=Z<0S;  
private static int THRESHOLD=10; I*ho@`U  
/* (non-Javadoc) vKaX,)P;?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nH[@EL  
*/ r43dnwX  
public void sort(int[] data) { S;|%'Sn|j9  
int[] stack=new int[MAX_STACK_SIZE]; }O o  
zlSwKd(  
int top=-1; M.|hnGX N  
int pivot; o^7NZ]m  
int pivotIndex,l,r; Ui?t@.  
D.?KgOZ  
stack[++top]=0; oxGOn('  
stack[++top]=data.length-1; P6IhpB59  
YdeSJ(:  
while(top>0){ dX+DE(y  
int j=stack[top--]; Q@d X2  
int i=stack[top--]; (5Cm+Sy  
r/{0Y Fa  
pivotIndex=(i+j)/2; t$Qav>D  
pivot=data[pivotIndex]; i ;X'1TN(y  
,j5fzA  
SortUtil.swap(data,pivotIndex,j); "h:xdaIE/p  
Nb B`6@r  
file://partition Kx<bVK4"  
l=i-1; QV?\?9(  
r=j; hP 9+|am%  
do{ N:&^ql4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *a$z!Ma3h  
SortUtil.swap(data,l,r); \J1Jn~  
} [8)Zhw$  
while(l SortUtil.swap(data,l,r); eRv3ZHH  
SortUtil.swap(data,l,j); W}T+8+RU  
:T'"%_d5  
if((l-i)>THRESHOLD){ "J[Crm  
stack[++top]=i; yq;gBIiZ  
stack[++top]=l-1; ZYL]|/"J9  
} _-^ KqNyy  
if((j-l)>THRESHOLD){ ?]sj!7   
stack[++top]=l+1; e%UFY-2  
stack[++top]=j; W6wgX0H  
} >L=l{F6 p  
Y|1kE;  
} MNJ$/l)h  
file://new InsertSort().sort(data); L0uN|?}  
insertSort(data); BJ{mX>I(  
} N %0F[sY6  
/** 8G{} r  
* @param data jUjQ{eT  
*/ B-eYWt8s  
private void insertSort(int[] data) { 5ue{&z @T  
int temp; 81aY*\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^Z}INUv]7  
} V1"+4&R^T_  
} 'f5,%e2#  
} ]2Lwd@  
[qid4S~r,&  
} &LYU#$sj  
pT[C[h:  
归并排序: \9D '7/$I,  
O{%y `|m  
package org.rut.util.algorithm.support; dq|z;,`  
>B~p[wh0  
import org.rut.util.algorithm.SortUtil; vsES`  
C\EV $U,  
/** QEtZ]p1H@  
* @author treeroot r%TgZ5~u  
* @since 2006-2-2 <\yM{ V\  
* @version 1.0 bh_i*DJ]  
*/ (^057  
public class MergeSort implements SortUtil.Sort{ *a+~bX)18  
)7J@A%u  
/* (non-Javadoc) zXMIDrq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _>&zhw2  
*/ ?b2%\p`"  
public void sort(int[] data) { "4L' 2w+  
int[] temp=new int[data.length]; (5'qEi ea  
mergeSort(data,temp,0,data.length-1); KZ<zsHX8H  
} -bKli<C  
zf2]|]*xz  
private void mergeSort(int[] data,int[] temp,int l,int r){ RCgs3JIE+2  
int mid=(l+r)/2; pspV~9,  
if(l==r) return ; w{Dk,9>w)  
mergeSort(data,temp,l,mid); ^$yr-p%-  
mergeSort(data,temp,mid+1,r); ,D~C40f  
for(int i=l;i<=r;i++){ (wvDiW5  
temp=data; +h[$\_y  
} ]36R_Dp  
int i1=l; VJJw"4DJ  
int i2=mid+1; eGnc6)x@C  
for(int cur=l;cur<=r;cur++){ !y?g$e`  
if(i1==mid+1) 0y|}}92:  
data[cur]=temp[i2++]; Q{mls  
else if(i2>r) c+-L>dsss  
data[cur]=temp[i1++]; 0UlaB sv  
else if(temp[i1] data[cur]=temp[i1++]; .$S`J2Y  
else 0nA17^W  
data[cur]=temp[i2++]; 0$* z   
} \+S~N:@><k  
} R-hqaEB  
[YJP  
} js7J#b7  
bxEb2D  
改进后的归并排序: Z\O ,9  
tse(iX/D  
package org.rut.util.algorithm.support; ~])\xC  
Jp_{PR:&  
import org.rut.util.algorithm.SortUtil; h^34{pKDn  
\asF~P  
/** r~TiJ?8I  
* @author treeroot *F~"4g  
* @since 2006-2-2 w.J2pvyB  
* @version 1.0 JTl 37j  
*/ Qe]@`Vg  
public class ImprovedMergeSort implements SortUtil.Sort { /gXli)  
w doA>a?q  
private static final int THRESHOLD = 10; )N`ia%p_]  
>RE&>T^8  
/* g#5g0UP)V  
* (non-Javadoc) p;BdzV>  
* ]#))#-&1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %^gT.DsX-  
*/ Xp._B4g  
public void sort(int[] data) { u.8vXc  
int[] temp=new int[data.length]; fy9{W@E3p  
mergeSort(data,temp,0,data.length-1); d<(1^Rto  
} HC}D<FX |  
m7^a4  
private void mergeSort(int[] data, int[] temp, int l, int r) { W"VN2  
int i, j, k; IS]03_uQ  
int mid = (l + r) / 2; n4(w?,w }  
if (l == r) lb`P9mbr+  
return; RYS]b[-xZz  
if ((mid - l) >= THRESHOLD) kH1l -mxz  
mergeSort(data, temp, l, mid); X#1So.}c  
else _N9yC\  
insertSort(data, l, mid - l + 1); (al7/EhY  
if ((r - mid) > THRESHOLD) DV*8Mkzg  
mergeSort(data, temp, mid + 1, r); !0*=z~  
else }+i ZY\t  
insertSort(data, mid + 1, r - mid); m!N_TOl-^  
A{mbL2AxwC  
for (i = l; i <= mid; i++) { 1S0Hc5vw  
temp = data; "p2 $R*ie  
} qPH]DabpI  
for (j = 1; j <= r - mid; j++) { {foF[M  
temp[r - j + 1] = data[j + mid]; 6~;fj+S  
} zUIh8cAoE  
int a = temp[l]; wL5IAkq  
int b = temp[r]; I2YQIY+  
for (i = l, j = r, k = l; k <= r; k++) { _BtppQIWv  
if (a < b) { >xJt&jW-  
data[k] = temp[i++]; '1=/G7g  
a = temp; )'DFDrY  
} else { Q*(]&qr"E  
data[k] = temp[j--]; roj/GZAy"  
b = temp[j]; @ g~kp  
} L>xcgV7  
} Uu>YE0/)  
} ~W%A8`9  
%w/o#*j<;  
/** D#W{:_f  
* @param data 6(D K\58  
* @param l xm/v :hl=  
* @param i @<W"$_ r-  
*/ tvf"w`H  
private void insertSort(int[] data, int start, int len) { [3t N-aj[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); " *kWM  
} QRgWzaI  
} b;9v.MZ4>g  
} XRJ<1w:  
} `^wF]R  
;# {XNq<1  
堆排序: TLPy/,  
L4 x  
package org.rut.util.algorithm.support; A9p$5jt7  
H8P il H  
import org.rut.util.algorithm.SortUtil; W{1=O)w  
JEU?@J71O  
/** rTDx|pvYx  
* @author treeroot s:jr/ j!  
* @since 2006-2-2 Itj|0PGd  
* @version 1.0 xqmJPbA  
*/ x%vt$dy*8  
public class HeapSort implements SortUtil.Sort{ O 4l[4,`  
Fr/8q:m &  
/* (non-Javadoc) vh KA8vr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) - Kj$A@~x  
*/ 8 6?D  
public void sort(int[] data) { W%Br%VQJ  
MaxHeap h=new MaxHeap(); ;G;vpl  
h.init(data); F3,hx  
for(int i=0;i h.remove(); Ga N4In[d  
System.arraycopy(h.queue,1,data,0,data.length); wgkh} b   
} sJt&`kZ  
pjIXZ=  
private static class MaxHeap{ dH&N<  
7EQ |p  
void init(int[] data){ N@?Fpmu/k  
this.queue=new int[data.length+1]; ^0~?3t5  
for(int i=0;i queue[++size]=data; :g+R}TR[i  
fixUp(size); I&Yu=v/_  
} vRRi"bo  
} afG b}8 Q9  
q,0o:nI  
private int size=0; #E{OOcM  
9oc.`-e\?  
private int[] queue; l: 1Zq_?v;  
Ks8S^77  
public int get() { niqiDT/  
return queue[1]; FyZw='D  
} @xSS`&b  
c<pr1g  
public void remove() { _d %H;<_  
SortUtil.swap(queue,1,size--); c5R58#XK=  
fixDown(1); 8 yB  
} Mm^o3vl  
file://fixdown Co[  rhs  
private void fixDown(int k) { B~caHG1b  
int j; 9_5Fl,u z  
while ((j = k << 1) <= size) { 0K@s_C=n#  
if (j < size %26amp;%26amp; queue[j] j++; JV(|7Sk  
if (queue[k]>queue[j]) file://不用交换 #f\U3p  
break; Y.[^3  
SortUtil.swap(queue,j,k); &AZr (>  
k = j; h&NcN-["  
} T$0//7$')  
} #N[nvIi}  
private void fixUp(int k) { na(@`(j[  
while (k > 1) { zRL[.O9  
int j = k >> 1; g=o)=sQd  
if (queue[j]>queue[k]) |XLx6E2F  
break; }yK_2zak5i  
SortUtil.swap(queue,j,k); ~ 9^1m  
k = j; C8-4 m68"  
} a^,6[  
} jxZ R%D  
)+u|qT3%  
} ZV,n-M =  
|A 8xy#  
} #'v7mEwt  
_udH(NC  
SortUtil: UStZ3A'  
CJ {?9z@$.  
package org.rut.util.algorithm; n;xtUw6 \  
& WYIfx{  
import org.rut.util.algorithm.support.BubbleSort; h<$Vry}  
import org.rut.util.algorithm.support.HeapSort; IT'~.!o7/  
import org.rut.util.algorithm.support.ImprovedMergeSort; zX{ [Z  
import org.rut.util.algorithm.support.ImprovedQuickSort; *G.6\  
import org.rut.util.algorithm.support.InsertSort; k$i76r  
import org.rut.util.algorithm.support.MergeSort; !FA^~  
import org.rut.util.algorithm.support.QuickSort; 4 "@BbVYR  
import org.rut.util.algorithm.support.SelectionSort; wHx1CXC  
import org.rut.util.algorithm.support.ShellSort; f:KKOLm  
zq8 z#FN  
/** kbI:}b7H  
* @author treeroot 0>)('Kv  
* @since 2006-2-2 Y6?d y\  
* @version 1.0 <fJoHS  
*/ 6HCP1`gg   
public class SortUtil { q\x*@KQgM  
public final static int INSERT = 1; di "rvw;R  
public final static int BUBBLE = 2; z%hB=V!~91  
public final static int SELECTION = 3; ;v[F@O~*)  
public final static int SHELL = 4; TMhUo#`I|  
public final static int QUICK = 5; E;@` { v  
public final static int IMPROVED_QUICK = 6; wbU pD(  
public final static int MERGE = 7; vAy`8Q  
public final static int IMPROVED_MERGE = 8; :cnH@:  
public final static int HEAP = 9; <ij;^ygYD  
INyreoMp  
public static void sort(int[] data) { QukLsl]U  
sort(data, IMPROVED_QUICK); C8m8ys  
} }e9E+2}Z\  
private static String[] name={ E@}t1!E<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" S@k4k^Vg  
}; @-NdgM<  
`|8)A)ZVT  
private static Sort[] impl=new Sort[]{ u#/Y<1gn  
new InsertSort(), %F3M\)jU  
new BubbleSort(), %A,4vLe~6  
new SelectionSort(), JcvWE $  
new ShellSort(), %t([  
new QuickSort(), 0vqXLFf   
new ImprovedQuickSort(), pfe9 n[  
new MergeSort(), C o4QWyt:  
new ImprovedMergeSort(), _ncqd,&z  
new HeapSort() '&I.w p`^  
}; t9Ht 5 4  
?}D@{%O3T  
public static String toString(int algorithm){ )Jz L  
return name[algorithm-1]; f[6;)ZA  
} 5 UpN/\He  
7i`@`0   
public static void sort(int[] data, int algorithm) { HC@E&t  
impl[algorithm-1].sort(data); w6F4o;<PR  
} q=M!YWz  
S#/[>Cb  
public static interface Sort { ^cz #PNB  
public void sort(int[] data); )V*Z|,#no  
} ULIbVy7Y  
frWw-<HoI  
public static void swap(int[] data, int i, int j) { 4N[8LC;MH  
int temp = data; n-be8p)-  
data = data[j]; *r6+Vz  
data[j] = temp; puV(eG  
} ytf.$P  
} X2 c<.  
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