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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。 ;p87^:  
插入排序: 7jGfQ  
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package org.rut.util.algorithm.support; qRz /$|.  
( X+2vN  
import org.rut.util.algorithm.SortUtil; S;oRE' kk  
/** ^1<i7u  
* @author treeroot &Lbwx&!0b  
* @since 2006-2-2 ?Ss~!38  
* @version 1.0 S+*>""=  
*/ ,$U~<Zd  
public class InsertSort implements SortUtil.Sort{ Cxe(iwa.  
iiWpm E<,  
/* (non-Javadoc) Tl#2w=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TD78&a#  
*/ jvpv1>KYV  
public void sort(int[] data) { S,Q(,e^&  
int temp; `fl$ o6S/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A`"?~_pHC  
} 4YoQ*NQw-  
} AUES;2WL  
} oE2VJKs<B  
8L]Cc!~  
} :B\ $7+$v  
(Ffa{Tt!  
冒泡排序: 4~8-^^  
TX7dwmt) N  
package org.rut.util.algorithm.support; 5 0a';!H  
=(~ZmB\  
import org.rut.util.algorithm.SortUtil; LBmXy8'T`  
hjhZ":I.  
/** t_Rj1U  
* @author treeroot ?{xD{f$  
* @since 2006-2-2 cob??|,\m  
* @version 1.0 Vv+ oq5hf  
*/ [ $"  
public class BubbleSort implements SortUtil.Sort{ #K iqV6E  
(y1S*_D  
/* (non-Javadoc) /c6]DQ<?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )*Wz5x  
*/ LI^D\  
public void sort(int[] data) { j?g#8L;W\w  
int temp; QL2 `X2  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "xn,'`a  
if(data[j] SortUtil.swap(data,j,j-1); EQX<<x"  
} "-j96 KD  
} x(p/9$.#  
} R<%{I)  
} ^:,wk7  
m=Mk@xfQ#  
} y=jZ8+M   
RD;A  
选择排序: UMT}2d%  
}J2f$l>R  
package org.rut.util.algorithm.support; q(4Ny<=,'K  
.u`A4;;Gw  
import org.rut.util.algorithm.SortUtil; ] mK{E~Zll  
px(~ZZB"  
/** Lr(JnS  
* @author treeroot _H-Fm$Q  
* @since 2006-2-2 PO^#G @  
* @version 1.0 (ak&>pk;  
*/ UUa@7|x  
public class SelectionSort implements SortUtil.Sort { K$B~vy6E`  
66$ hdT$  
/* bH:C/P<x  
* (non-Javadoc) hlz/TIP^N3  
* G*~CB\K_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xq"Es  
*/ 9l:[jsk<d  
public void sort(int[] data) { UIU6rilB  
int temp; 8@|{n`n]  
for (int i = 0; i < data.length; i++) { \< a^5'  
int lowIndex = i; }o\} qu*  
for (int j = data.length - 1; j > i; j--) { 6Q{OM:L/;.  
if (data[j] < data[lowIndex]) { mS49l  
lowIndex = j; HiD%BL>%  
} $BG]is,&5  
} 91DevizXx  
SortUtil.swap(data,i,lowIndex); z46Sh&+  
} } :gi<#-:G  
} =h+-1zp{M^  
=kzHZc  
} _1WA:7$C  
.Yz^r?3t  
Shell排序: /zr)9LQY0  
_a_T`fE&de  
package org.rut.util.algorithm.support; Bgp%hK  
fZ^ad1o  
import org.rut.util.algorithm.SortUtil; ~y whl'"k  
JNP6qM  
/** ^t$uDQ[hA  
* @author treeroot ;Cjj_9e,:  
* @since 2006-2-2 n36iY'<)G  
* @version 1.0 "$ISun=8  
*/ gA3f@7}d  
public class ShellSort implements SortUtil.Sort{ }]<|`FNc  
jM-5aj[K  
/* (non-Javadoc) "v0SvV<7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hW6Ksn,*  
*/ 0kw)-)=  
public void sort(int[] data) { (m=1yj9  
for(int i=data.length/2;i>2;i/=2){ Eb CK9  
for(int j=0;j insertSort(data,j,i); 2^nws  
} 8:0,jnS  
} &qIdT;^=I  
insertSort(data,0,1); fKtlfQG  
} VN$7r  
a=vH:D  
/** yf-2E_yB  
* @param data (T&(PCw|  
* @param j s0 Z)BR #  
* @param i P :%b[7  
*/ YN7`18u  
private void insertSort(int[] data, int start, int inc) { kpNp}b8']  
int temp; 'Z%1Ly^b  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ->7zVAX  
} !XM*y  
} ^+k= ;nl  
} bqaj~:}@  
H]f[r~  
} 8U7d d[  
TefPxvd  
快速排序: /s+S\ djk  
-"^xg"  
package org.rut.util.algorithm.support; +Hp`(^(  
hF`<I.z}  
import org.rut.util.algorithm.SortUtil; 'tU\~3k  
SMfa(+VI  
/** [/l&:)5W>  
* @author treeroot ] ;CJ6gM~  
* @since 2006-2-2 <Z\{ijfvD  
* @version 1.0  5PC:4  
*/ <:mK&qu f  
public class QuickSort implements SortUtil.Sort{ wm9wnAy  
;:>q;%  
/* (non-Javadoc) j *;.>akY7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }z|9F(I   
*/ sYvlf0  
public void sort(int[] data) { IS;[oJef  
quickSort(data,0,data.length-1); @2-;,VL3  
} YD{N)v  
private void quickSort(int[] data,int i,int j){ h~z}NP  
int pivotIndex=(i+j)/2; u0g"x_3  
file://swap L {&=SR.  
SortUtil.swap(data,pivotIndex,j); yNU}1_oK  
{z;4t&5  
int k=partition(data,i-1,j,data[j]); "CREls,  
SortUtil.swap(data,k,j); >$)~B 4  
if((k-i)>1) quickSort(data,i,k-1); [,MK)7DU  
if((j-k)>1) quickSort(data,k+1,j); 0"ooHP$1  
Ww#!-,*]o  
} pF8+< T3y  
/** ELG9ts+5Uj  
* @param data ZPz=\^  
* @param i NzeiGj  
* @param j [;ZC_fD  
* @return vF>]9sMv  
*/ (A=Z,ed  
private int partition(int[] data, int l, int r,int pivot) { Q:T9&_|  
do{ n.R"n9v`  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); cRNVqMpg  
SortUtil.swap(data,l,r); 8pp;" "b  
} KGI <G  
while(l SortUtil.swap(data,l,r); UIht`[(z  
return l; :Gx5vo  
} W/~q%\M {  
7VWy1  
} V?p`rrj@  
|`{$Ego:  
改进后的快速排序: I:YgKs)[  
e#k)F.TZ:%  
package org.rut.util.algorithm.support; >l=^3B,j  
jB0Ts;5  
import org.rut.util.algorithm.SortUtil; _{eA8J(A<  
G-;EB  
/** mG0_&'"YIG  
* @author treeroot m&be55M;  
* @since 2006-2-2 "*(a2k3J  
* @version 1.0 ^=PY6!iW  
*/ P:3o}CB1I  
public class ImprovedQuickSort implements SortUtil.Sort { {y%@1q%"  
5@I/+D  
private static int MAX_STACK_SIZE=4096; % I2JS  
private static int THRESHOLD=10; gFfKK`)}D'  
/* (non-Javadoc) \ Z5160  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v-Q>I5D;:  
*/ $+Z2q<UT  
public void sort(int[] data) { (NJ.\m  
int[] stack=new int[MAX_STACK_SIZE]; wwJs_f\  
j#Lj<jX!xR  
int top=-1; #CB Kt,  
int pivot; jc#gn& 4C  
int pivotIndex,l,r; 9RkNRB)8  
wx!2/I>  
stack[++top]=0; 9- 24c  
stack[++top]=data.length-1; lIO#)>  
5j9%W18  
while(top>0){ lLglF4  
int j=stack[top--]; m@0> =s~.  
int i=stack[top--]; t=s.w(3t  
"QD>:G;u  
pivotIndex=(i+j)/2; S;%k?O 7v  
pivot=data[pivotIndex]; =Mxu,A  
/g!Xe]Ss  
SortUtil.swap(data,pivotIndex,j); :m/qR74+"  
eIN0 T;1T  
file://partition ,Z! I^  
l=i-1; C',uY7}<  
r=j; ?.beN[X  
do{ h|lH`m^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); kXlI *h  
SortUtil.swap(data,l,r); >Ad`_g6Wew  
} ,Ik~E&Ku2'  
while(l SortUtil.swap(data,l,r); r)Ml-r =  
SortUtil.swap(data,l,j); _u6MSRX[6$  
`gJ$fTi&  
if((l-i)>THRESHOLD){ T, PN6d  
stack[++top]=i; hb)C"q=  
stack[++top]=l-1; %[azMlp<  
} *!3qO^b?  
if((j-l)>THRESHOLD){ c>+68<H  
stack[++top]=l+1; ,pQ[e$u1  
stack[++top]=j; %mzDmrzq  
} NGO?K?  
nHp$5|r<  
} XJ"xMv  
file://new InsertSort().sort(data); 'R42N3|F  
insertSort(data); zvdIwV&oT  
} , E$f"  
/** Q]VG6x  
* @param data ~lqNWL^l  
*/ j7NOYm5N  
private void insertSort(int[] data) { N3oa!PE  
int temp; av:%wJUl,$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ld 1[Usaq  
} [kqO6U  
} <i`s)L  
} #MiO4zXgd  
8+32hg@^F  
} }ov>b2H#<  
t\Qm2Q)>  
归并排序: Vh]=sd<F  
X gtn}7N.  
package org.rut.util.algorithm.support; =5YbK1Q^  
j X*gw6!  
import org.rut.util.algorithm.SortUtil; + [$Td%6  
7| j rk  
/** w"O;: `|n  
* @author treeroot |tTcJ\bG  
* @since 2006-2-2 5Kk}sxol  
* @version 1.0 L%-ENk  
*/ 7;] IlR6  
public class MergeSort implements SortUtil.Sort{ M8y|Lm}o  
+$/NTUOP  
/* (non-Javadoc) #yEkd2Vy{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vu*9(t)EC  
*/ ?MFXZ/3(ba  
public void sort(int[] data) { Q7/Jyx|  
int[] temp=new int[data.length]; ;<xPzf  
mergeSort(data,temp,0,data.length-1); 7_rDNK@e  
}  u bZ`Y$  
e:_[0#  
private void mergeSort(int[] data,int[] temp,int l,int r){ |W&K@g$  
int mid=(l+r)/2; EZ hk(LE  
if(l==r) return ; z=8l@&hYLq  
mergeSort(data,temp,l,mid); n,_9Eh#WD  
mergeSort(data,temp,mid+1,r); yD8Qy+6L  
for(int i=l;i<=r;i++){ O-P`HKr  
temp=data; ![MtJo5  
} .G"T;w 6d  
int i1=l; f2v~: u  
int i2=mid+1; (#>Q#Izr  
for(int cur=l;cur<=r;cur++){ ,jD-fL/:  
if(i1==mid+1) .f!:@fX>=  
data[cur]=temp[i2++]; 47A[-&y*X  
else if(i2>r) j)juvat  
data[cur]=temp[i1++]; 57;( P  
else if(temp[i1] data[cur]=temp[i1++]; s!Iinc^p  
else h///  
data[cur]=temp[i2++]; Mt%Q5^  
} ft iAty0n  
} ]I;owk,  
V|{~9^  
} gI@nE:(m  
&b2@+/ F  
改进后的归并排序: .v9i|E=<~  
 BrZ17  
package org.rut.util.algorithm.support; ?,[$8V  
g  b[.Ww  
import org.rut.util.algorithm.SortUtil; \\d8ulu  
!MmbwB'  
/** A-$ C6q   
* @author treeroot pF}E`U=Z  
* @since 2006-2-2 N~S#( .}[  
* @version 1.0 kY'C'9p  
*/ hl DU.k  
public class ImprovedMergeSort implements SortUtil.Sort { F#qc#s  
V gy12dE  
private static final int THRESHOLD = 10; *0r!eD   
HPo><u  
/* /^WawH6)6  
* (non-Javadoc) c]ga) A(  
* ww'B!Ml>F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,I,Zl.5  
*/ [g+WL\1  
public void sort(int[] data) { G,(Xz"`,  
int[] temp=new int[data.length]; i"E_nN"V  
mergeSort(data,temp,0,data.length-1); V_|HzYJJ5  
} (+u&b< <6N  
KQ(S\  
private void mergeSort(int[] data, int[] temp, int l, int r) { '}F9f?  
int i, j, k; @]EdUzzKq  
int mid = (l + r) / 2; @ W q8AFo  
if (l == r) @9k/od@mW  
return; \Z~ <jv  
if ((mid - l) >= THRESHOLD) l9H-N*Wx  
mergeSort(data, temp, l, mid); vJ&35nF&  
else hIa,PZ/Q  
insertSort(data, l, mid - l + 1); H3Zt 3l1u+  
if ((r - mid) > THRESHOLD) 1Eryw~,,9i  
mergeSort(data, temp, mid + 1, r); I6S>*V  
else VHL[Y  
insertSort(data, mid + 1, r - mid); q'X#F8v  
RGY#0.Z}  
for (i = l; i <= mid; i++) { 5\ }QOL  
temp = data; (F:|tiV+  
} !wro7ilMB  
for (j = 1; j <= r - mid; j++) { jd`]]FAww  
temp[r - j + 1] = data[j + mid]; NG4@L1f%  
} SF[Z]|0gs  
int a = temp[l]; ye| 2gH  
int b = temp[r]; =Prz|   
for (i = l, j = r, k = l; k <= r; k++) { 5xH*&GpL7  
if (a < b) { i2LN`5k  
data[k] = temp[i++]; 5iGz*_ m  
a = temp; PK_2  
} else { Y)M-?|4  
data[k] = temp[j--]; Ow-;WO_HQ  
b = temp[j]; wMM1Q/-#  
} /5\{(=0  
} oL9ELtb ]s  
} Kf6D$}  
JNu+e#.Y  
/** dcE(uf  
* @param data `_J>R  
* @param l q1/mp){  
* @param i ;Z,l};b  
*/ MA7&fNjB  
private void insertSort(int[] data, int start, int len) { #vPk XcP  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); grJ(z)c  
} w&&)v~Y_  
} .O{_^~w_q  
} m x2Ov u  
} 7~H$p X  
;$4: &T  
堆排序: QCfR2Nn}  
i \.&8  
package org.rut.util.algorithm.support; gO]8hLT  
:1#$p  
import org.rut.util.algorithm.SortUtil; + ^4HCyW  
W9A F}  
/** >R\!Qk  
* @author treeroot 6%&w\<(SG  
* @since 2006-2-2 8%b-.O:_$  
* @version 1.0 i6^-fl  
*/ o;pJjC]  
public class HeapSort implements SortUtil.Sort{ hCj8y.X|E(  
mWVq>~  
/* (non-Javadoc) )Qo^Mz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }9+Vf'u|l  
*/ ,Fu[o6x<^  
public void sort(int[] data) {  w4UJXc  
MaxHeap h=new MaxHeap(); !nF.whq  
h.init(data); j7VaaA  
for(int i=0;i h.remove(); (T.g""N~`  
System.arraycopy(h.queue,1,data,0,data.length); ^3Z~RK\}  
} [?)He} _L  
X>MDX.Z  
private static class MaxHeap{ *o=( w5   
M7(]NQ\TQ  
void init(int[] data){ Lcs?2c:%  
this.queue=new int[data.length+1]; cvV8 ;  
for(int i=0;i queue[++size]=data; d ?,wEfwp  
fixUp(size); m khp@^5  
} ,u.A[{@py  
} !\q'{x5C  
Acb %)Y  
private int size=0; OX.g~M ig|  
4uv*F:eo  
private int[] queue; 74KR.ABd  
Z%VgAV>>  
public int get() { {XLRrU!*  
return queue[1]; : )k|Onz  
} rX|{nb  
Ys@\~?ym+  
public void remove() { e~$aJO@B.R  
SortUtil.swap(queue,1,size--); ban;HGGNG{  
fixDown(1); 0-Wv$o[  
} v&"sTcS|  
file://fixdown tSunO-\y  
private void fixDown(int k) { V:1_k"zQ  
int j; :U'Oc3l#Y  
while ((j = k << 1) <= size) { -L2% ,.E>4  
if (j < size %26amp;%26amp; queue[j] j++; zY&/lWW._  
if (queue[k]>queue[j]) file://不用交换 I -V=Z:  
break; z*/}rk4i  
SortUtil.swap(queue,j,k); f5#VU7=1F2  
k = j; %){)/~e&  
} t\-;n:p-  
} sTECNY=l  
private void fixUp(int k) { EB5 ^eNdL  
while (k > 1) { x<) T,c5Y  
int j = k >> 1; ODPWFdRar  
if (queue[j]>queue[k]) G5$YXNV  
break; 5g phza  
SortUtil.swap(queue,j,k); PtOYlZTe?  
k = j; 5Ja[p~^L  
} V}q=!zz  
} ;QQ/bM&I  
ujbJ&p   
} k FE<M6a9@  
o@r~KFIe  
} u%nhQ%  
$_ k:{?  
SortUtil: WNiM&iU  
W%K=N-kE_  
package org.rut.util.algorithm; ?qczMck_  
|Q#CQz  
import org.rut.util.algorithm.support.BubbleSort; \l/<[ZZ  
import org.rut.util.algorithm.support.HeapSort; +Pb@@C&  
import org.rut.util.algorithm.support.ImprovedMergeSort; l gTw>r   
import org.rut.util.algorithm.support.ImprovedQuickSort; n`|CD Kb  
import org.rut.util.algorithm.support.InsertSort; ?4lEHef  
import org.rut.util.algorithm.support.MergeSort; bU_P@GKB  
import org.rut.util.algorithm.support.QuickSort; x7c#kU2A&Z  
import org.rut.util.algorithm.support.SelectionSort; #h2 qrX&+  
import org.rut.util.algorithm.support.ShellSort; .&n;S';"  
lAPPn g`  
/** =b#,OXQ  
* @author treeroot [J43]  
* @since 2006-2-2 Zex`n:Wl?j  
* @version 1.0 Uy{ZK*c8i  
*/ EZ)GW%Bm2  
public class SortUtil { Ly`FU)  
public final static int INSERT = 1; qUG)+~g`  
public final static int BUBBLE = 2; Z(o]8*;A i  
public final static int SELECTION = 3; DM*u;t{i  
public final static int SHELL = 4; a |0f B4G  
public final static int QUICK = 5; \.{ZgL5"  
public final static int IMPROVED_QUICK = 6; sm;\;MP*yH  
public final static int MERGE = 7; #e$vv!&}  
public final static int IMPROVED_MERGE = 8; *uvE`4V^Jg  
public final static int HEAP = 9; ]0myoWpi3  
4d $T6b  
public static void sort(int[] data) { @s~*>k#"#  
sort(data, IMPROVED_QUICK); v^1n.l %E  
} 4XArpKA  
private static String[] name={ u$y5?n|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" lgh+\pj  
}; 3b1%^@,ACy  
ci{WyIh  
private static Sort[] impl=new Sort[]{ xU$15|ny  
new InsertSort(), '=>l& ;  
new BubbleSort(), k\lU Q\/O5  
new SelectionSort(), =42NQ{%@;  
new ShellSort(), ?bl9e&/!  
new QuickSort(), B3V+/o6  
new ImprovedQuickSort(), _Wo(;'.  
new MergeSort(), j9$kaEf  
new ImprovedMergeSort(), 8jU6N*p/  
new HeapSort() {$)pkhJ  
}; %51HJB}C]  
-v?)E S  
public static String toString(int algorithm){ <~35tOpv  
return name[algorithm-1]; )r:gDd#/X  
} ?F@X>zR2  
+We=- e7  
public static void sort(int[] data, int algorithm) { +&8'@v$  
impl[algorithm-1].sort(data); 1Et{lrgh f  
} Xa/]} B  
6YYDp&nqEj  
public static interface Sort { aUEnQ%YU"  
public void sort(int[] data); NC{8[*Kx5  
} vK8!V7o~h%  
6yXMre)YV  
public static void swap(int[] data, int i, int j) { Mg=R**s1x%  
int temp = data; f&`yiy_  
data = data[j]; kDK0L3}nr]  
data[j] = temp; $C9['GGR  
} D 13bQ&\B-  
} (t2vt[A6ph  
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