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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。 4: <=%d  
插入排序: sUP !'Av  
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package org.rut.util.algorithm.support; _7M!b 9oA  
0u"/7OU  
import org.rut.util.algorithm.SortUtil; VI (;8  
/** ]O;Hlty(g  
* @author treeroot b88Zk*  
* @since 2006-2-2 |_P-  
* @version 1.0 .V\ M/q\Tv  
*/ 96.z\[0VZ  
public class InsertSort implements SortUtil.Sort{ qJ|n73yn  
i;Y@>-[e<  
/* (non-Javadoc) j_r7oARL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7q] @Jx9  
*/ QF fKEMN  
public void sort(int[] data) { X}5aE4K/  
int temp; ;I+"MY7D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b:iZ.I  
} _>moza  
} l?/.uNw  
} Q:x:k+O-  
CY4_=  
} |=frsf~?  
-|DSfI#j  
冒泡排序: @M V%&y*z.  
r12{XW?~  
package org.rut.util.algorithm.support; Pj!{j)-tS  
/~LXY< -(  
import org.rut.util.algorithm.SortUtil; ecH-JPm'  
ClHaR  
/** QxGQF|  
* @author treeroot p ]zYj >e  
* @since 2006-2-2 47iwb  
* @version 1.0 B9 Dh^9?L  
*/ Qw$"W/&X  
public class BubbleSort implements SortUtil.Sort{ W].P(A>m  
,Dz2cR6  
/* (non-Javadoc) #c0 dZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l}DCK  
*/ IKK<D'6  
public void sort(int[] data) { 8O]U&A@  
int temp; 4nhe *ip  
for(int i=0;i for(int j=data.length-1;j>i;j--){ t|X |67W  
if(data[j] SortUtil.swap(data,j,j-1); sJlX ]\RLQ  
} rI:KZ}GZ  
} k"P2J}4eO  
} O8+[ )+6^  
} 4JHQ^i-aY  
-%=StWdb   
} : {9|/a  
[hg|bpEG  
选择排序: T2wn!N?r  
 afEp4(X~  
package org.rut.util.algorithm.support; f/b }X3K  
'^l/e: (H3  
import org.rut.util.algorithm.SortUtil; G5Ci"0  
k"SmbFn%N0  
/** f=}Mr8W'  
* @author treeroot eh'mSf^=p  
* @since 2006-2-2 L!L/QG|wdf  
* @version 1.0 DJE/u qE  
*/ V=|^r?  
public class SelectionSort implements SortUtil.Sort { 8-5a*vV,>  
rI}E2J  
/* ~zz|U!TG  
* (non-Javadoc) &bJ98 Nxl  
* k~Pm.@,3o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zJMKgw,i*  
*/ l\^q7cXG  
public void sort(int[] data) { LeW.uh3.  
int temp; e![Q1!r  
for (int i = 0; i < data.length; i++) { lq@Vb{Z  
int lowIndex = i; [ &*$!M  
for (int j = data.length - 1; j > i; j--) { {K'SOh H4?  
if (data[j] < data[lowIndex]) { wN)R !6  
lowIndex = j; |4Ix2GD  
} bE>3D#V<  
} ABV\:u  
SortUtil.swap(data,i,lowIndex); ^+[o +  
} ?E2k]y6<  
} dITnPb)i  
%:o@IRTRU  
} +^+wS`Y  
(W/jkm  
Shell排序: #|XEBOmsQ  
) Q=G&  
package org.rut.util.algorithm.support; Gx ZQ{ \  
l1cBY{3QD  
import org.rut.util.algorithm.SortUtil; LbR/it'}  
eq/5$b(  
/** [Pp#l*  
* @author treeroot 1|w,Z+/  
* @since 2006-2-2  ioi  
* @version 1.0 1MJ]Gh]5  
*/ ID+'$u &  
public class ShellSort implements SortUtil.Sort{ 3r em"M  
29ft!R>[  
/* (non-Javadoc) YY!(/<VI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (&MSP  
*/ :e@JESlLf  
public void sort(int[] data) { A?}OOjA  
for(int i=data.length/2;i>2;i/=2){ k7{fkl9|#  
for(int j=0;j insertSort(data,j,i); 0h shHv-  
} \N#)e1.0P  
} xN"KSQpu  
insertSort(data,0,1); J-PzIFWd  
} <vt^=QA'  
<Awx:lw.  
/** 0K3FH&.%  
* @param data g&0GO:F`  
* @param j K[sM)_I  
* @param i ?XOeMI  
*/ 9jPb-I-   
private void insertSort(int[] data, int start, int inc) { 2Bjp{)*  
int temp; 'fA D Dh}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <M'IR f/D  
} 9_>4~!x`  
} g[M@  
} Y(SI`Xo[  
qk,cp},2K  
} yL Q&<\  
18A&[6"!  
快速排序: A[ iP s9  
"}HQ)54&  
package org.rut.util.algorithm.support; _Mt:^H}Sy  
aY:(0en]&  
import org.rut.util.algorithm.SortUtil; f,L  
+~fu-%,k  
/** M.8!BB7\8e  
* @author treeroot w|nVK9.  
* @since 2006-2-2 :s'%IGy>:  
* @version 1.0 93WYZNpX  
*/ ygf qP  
public class QuickSort implements SortUtil.Sort{ NUnP'X=J,  
oM7^h3R  
/* (non-Javadoc) |(P;2q4>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CLkVe  
*/ Z],"<[E  
public void sort(int[] data) { _5m }g!  
quickSort(data,0,data.length-1); ai`:HhE  
} _@OYC<  
private void quickSort(int[] data,int i,int j){ yX~[yH+Pn  
int pivotIndex=(i+j)/2; m~U{ V9;*  
file://swap `p?E{k.N  
SortUtil.swap(data,pivotIndex,j); (&*F`\  
S-/ #3  
int k=partition(data,i-1,j,data[j]); blN1Q%m6  
SortUtil.swap(data,k,j); Y+jKP*ri  
if((k-i)>1) quickSort(data,i,k-1); -mkync3  
if((j-k)>1) quickSort(data,k+1,j); 0 j.Sb2  
JZXc1R| 9  
} ,){0y%c#y  
/** $Tur"_`I;  
* @param data ibuI/VDF  
* @param i |"-,C}O  
* @param j UKJY.W!w4  
* @return Q]7Q  
*/ \fKE~61  
private int partition(int[] data, int l, int r,int pivot) { `P5"5N\h  
do{ ZkIQ-;wx  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LuqaGy}>-  
SortUtil.swap(data,l,r); IB6]Wj  
} {;}8Z$  
while(l SortUtil.swap(data,l,r); sR 9F:  
return l; i@J,u  
} \O:xw-eG   
Vx*q'~4y!|  
} h^0mjdSp,  
&rd(q'Vi  
改进后的快速排序: I>5@s;  
$ B9=v  
package org.rut.util.algorithm.support; =@w:   
xKr,XZu  
import org.rut.util.algorithm.SortUtil; `SwnKg  
I7~|!d6  
/** =z3jFaZ  
* @author treeroot op-#Ig$#  
* @since 2006-2-2 b tu:@s8ci  
* @version 1.0 vvM)Rb,  
*/ hjG1fgEj  
public class ImprovedQuickSort implements SortUtil.Sort { ,![=_d  
mCGcM^21-x  
private static int MAX_STACK_SIZE=4096; uf^:3{1  
private static int THRESHOLD=10; ".)_kt[  
/* (non-Javadoc) O$H150,Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H+;wnI>@  
*/ _5T7A><q<  
public void sort(int[] data) { ^8m+*t  
int[] stack=new int[MAX_STACK_SIZE]; V"p<A  
jyGVbno`  
int top=-1; -"zu"H~t4  
int pivot; Rpk`fxAO  
int pivotIndex,l,r; eC$v0Gtq  
K*Jtyy}r  
stack[++top]=0; >.iw8#l  
stack[++top]=data.length-1; vs. uq  
QP B"E W  
while(top>0){ L)}V [j#  
int j=stack[top--]; hQm4R]a  
int i=stack[top--]; >u)ZT  
$)3PF  
pivotIndex=(i+j)/2; doc  
pivot=data[pivotIndex]; i'wF>EBz  
MI(i%$R-A  
SortUtil.swap(data,pivotIndex,j); Y/0O9}hf  
2 mZ/ 3u  
file://partition =.E(p)fz  
l=i-1; \=7=>x_  
r=j; %20-^&zZ  
do{ V@:=}*E  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $-]setdY  
SortUtil.swap(data,l,r); ['emP1g~  
} f^4*.~cB  
while(l SortUtil.swap(data,l,r); LtztjAm.  
SortUtil.swap(data,l,j); r$FM8$cJ  
6wB>-/'Y  
if((l-i)>THRESHOLD){ j dhml%pAd  
stack[++top]=i; AtlR!I EUb  
stack[++top]=l-1; )6E*Qz  
} ?ev G=S4>  
if((j-l)>THRESHOLD){ IKDjatn  
stack[++top]=l+1; F[=lA"F^  
stack[++top]=j; yl<$yd0Zdu  
} }AW)R&m  
}pnFJ  
} xqWrW)  
file://new InsertSort().sort(data); ,?<h] !aQ  
insertSort(data); 1vs>2` DLa  
} W lQ=CRY  
/** Kw0V4UF  
* @param data HoE.//b  
*/ R%_H\-wo  
private void insertSort(int[] data) { b*F~%K^i$  
int temp; ~_db<!a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !VX_'GyK  
} oHXW])[  
} %4|}&,%%r  
} pZ~> l=-  
J5p!-N`NS  
} NE2sD  
$v<hW A]>  
归并排序: gDNTIOV  
+'j*WVE%5  
package org.rut.util.algorithm.support; d<GG (  
uxMy 1oy  
import org.rut.util.algorithm.SortUtil; O;BMwg_7  
y8*@dRrq  
/** D2%G.z  
* @author treeroot [G[{l$Eit  
* @since 2006-2-2 O|OSE  
* @version 1.0 a^\- }4yR  
*/ P tQ#  
public class MergeSort implements SortUtil.Sort{ renmz,dJ,  
bOSYr<R&  
/* (non-Javadoc) sJI -  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aQ&8fteFR  
*/ lDPRn~[#\  
public void sort(int[] data) { o%^k T&  
int[] temp=new int[data.length]; Hrg=sR  
mergeSort(data,temp,0,data.length-1); -~O;tJF2  
} 9g&)6,<  
fo\J \  
private void mergeSort(int[] data,int[] temp,int l,int r){ ?Y6la.bc{  
int mid=(l+r)/2; >c y.]uB  
if(l==r) return ; F `pyhc>1;  
mergeSort(data,temp,l,mid); -=Eq/s u%  
mergeSort(data,temp,mid+1,r); &>zy_)  
for(int i=l;i<=r;i++){ ?fa,[r|G  
temp=data; TaQ "G  
} \LoSUl i  
int i1=l; <W=[ sWJ  
int i2=mid+1; #!=>muZt  
for(int cur=l;cur<=r;cur++){ :Bv&)RK  
if(i1==mid+1) ;TV'PJ  
data[cur]=temp[i2++]; Z!RRe]"y  
else if(i2>r) `YmI'  
data[cur]=temp[i1++]; Q0q)n=i }]  
else if(temp[i1] data[cur]=temp[i1++]; )' x/q  
else fv j5[Q  
data[cur]=temp[i2++]; OZC/+"\,  
} g?A5'o&Yu  
} Qk~0a?#y5  
$-fjrQ  
} 0 bPJEEd  
}lC64;yo  
改进后的归并排序: CdzkMVH  
wwK~H  
package org.rut.util.algorithm.support; =JbdsYI(  
n$m]58w  
import org.rut.util.algorithm.SortUtil; Jp.3KA>  
d)hzi  
/** .sJys SA\  
* @author treeroot K.#,O+-Kg`  
* @since 2006-2-2 `hK>bHj  
* @version 1.0 {? K|(C  
*/ mHI4wS>()+  
public class ImprovedMergeSort implements SortUtil.Sort { K.V!@bPlw9  
, Y g5X  
private static final int THRESHOLD = 10; hk"9D<&i>b  
-VreBKn  
/* 6cQeL$,SQ  
* (non-Javadoc) GLaZN4`  
* >p]WCb'PH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wv7p,9Z[  
*/ '.%iPMM  
public void sort(int[] data) { >ggk>s|  
int[] temp=new int[data.length]; U+9- li  
mergeSort(data,temp,0,data.length-1); U!a!|s>  
} vR%j#v|s  
_gPVmGG  
private void mergeSort(int[] data, int[] temp, int l, int r) {  e8XM=$@  
int i, j, k; {FV,j.D  
int mid = (l + r) / 2; &AQg'|  
if (l == r) /`4v"f0V  
return; #uD)0zdw  
if ((mid - l) >= THRESHOLD)  Vp(D|}P  
mergeSort(data, temp, l, mid); koncWyW  
else 0$xK   
insertSort(data, l, mid - l + 1); 3r~>~ueZ  
if ((r - mid) > THRESHOLD) %jbJ6c  
mergeSort(data, temp, mid + 1, r); G| QUujl  
else )Y&MIJ7>@  
insertSort(data, mid + 1, r - mid); p|FlWR'mA  
A6?qIy  
for (i = l; i <= mid; i++) { w|!YoMk+o  
temp = data; KAj"p9hq+k  
} O3^98n2  
for (j = 1; j <= r - mid; j++) { 1&X}1  
temp[r - j + 1] = data[j + mid]; RL7C YB  
} {f`lSu  
int a = temp[l]; Qa,NGP.  
int b = temp[r]; ]k[ Q]:q  
for (i = l, j = r, k = l; k <= r; k++) { 88Fb1!a5Z  
if (a < b) { S+.21,  
data[k] = temp[i++]; Pcs^@QP  
a = temp; o|z+!,  
} else { bn0"M+7)f  
data[k] = temp[j--]; E/"YId `A  
b = temp[j]; -kG3k> by_  
} (w5u*hx  
} EpRXjz  
} :`:xP  
e+NWmu{<_  
/** ?60>'Xj j  
* @param data _v1bTg"?  
* @param l %iK%$  
* @param i pY^pTWs(  
*/ +90u!r^v  
private void insertSort(int[] data, int start, int len) { x1|Da$2  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3x04JE3!  
} <'r0r/0g?  
} Dl0/-=L  
} sFbfFUd  
} qru2h #  
IkSX\*  
堆排序: ^36M0h|R  
zt7_r`#z  
package org.rut.util.algorithm.support; v*&Uk '4E  
<\>+~p,  
import org.rut.util.algorithm.SortUtil; uQeqnGp  
JzHqNUn*M  
/** zl0;84:H  
* @author treeroot %GM>u2baw  
* @since 2006-2-2 ^$e0t;W=  
* @version 1.0 [<_"`$sm=  
*/ 4O$mR  
public class HeapSort implements SortUtil.Sort{ *y)4D[ z-  
#0}Ok98P  
/* (non-Javadoc) )J;ny!^2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6a7vlo  
*/ P;j&kuW|zL  
public void sort(int[] data) { :lgHL3yl  
MaxHeap h=new MaxHeap(); \BLp-B1s  
h.init(data); -<8B,  
for(int i=0;i h.remove(); S  <2}8D  
System.arraycopy(h.queue,1,data,0,data.length); yPSVwe|g  
} PoJmW^:}  
;?0_Q3IML  
private static class MaxHeap{ z9^c]U U)E  
Cy`26[E$S  
void init(int[] data){ F|,6N/;!W  
this.queue=new int[data.length+1]; >H$;Z$o*(  
for(int i=0;i queue[++size]=data; +yGY 785b  
fixUp(size); Ft3I>=f{  
} Sc$gnUYD{  
} l`DtiJ?$$0  
\$j^_C>  
private int size=0; 9e]'OKL+  
itw{;j   
private int[] queue; p7s@%scp  
;8BA~,4l  
public int get() { e$HQuA~Q;  
return queue[1]; Sobtz}A*  
} L1rwIOgq^  
6nc0=~='$  
public void remove() { z9 O~W5-U  
SortUtil.swap(queue,1,size--); Mxo6fn6-46  
fixDown(1);  U7E  
} o_sQQF  
file://fixdown y86))  
private void fixDown(int k) { 0D<TF>M;pn  
int j; V`by*s  
while ((j = k << 1) <= size) { #XcU{5Qm5  
if (j < size %26amp;%26amp; queue[j] j++; -/zp&*0gcx  
if (queue[k]>queue[j]) file://不用交换 <>]1Y$^Y  
break; 3B;}j/h2  
SortUtil.swap(queue,j,k); 3I]Fdp)'  
k = j; '[Xl>Z[  
} 2yvVeo&3  
} |gW    
private void fixUp(int k) { 6%E~p0)i%  
while (k > 1) { o*-9J2V=J  
int j = k >> 1; mW~P!7]  
if (queue[j]>queue[k]) pr$~8e=c  
break; :&9TW]*g  
SortUtil.swap(queue,j,k); Xk?R mU6  
k = j; 9s(i`RTM  
} [A]Ca$':  
} JD ]OIh  
Pr`s0J%m  
} S.W^7Ap  
:@/"abv  
} (8G$(MK  
XMw.wQ '?  
SortUtil: %l]Rh/VPn?  
>fH*XP>(  
package org.rut.util.algorithm; ]-:1se  
1A^1@^{m'  
import org.rut.util.algorithm.support.BubbleSort; iX%n0i  
import org.rut.util.algorithm.support.HeapSort; DT\ym9  
import org.rut.util.algorithm.support.ImprovedMergeSort; ' S,2  
import org.rut.util.algorithm.support.ImprovedQuickSort; q$T8bh,2  
import org.rut.util.algorithm.support.InsertSort; DvYwCgLR  
import org.rut.util.algorithm.support.MergeSort; *T1~)z}j<  
import org.rut.util.algorithm.support.QuickSort; @\jQoaLT$_  
import org.rut.util.algorithm.support.SelectionSort; I+" lrU  
import org.rut.util.algorithm.support.ShellSort; 5)`h0TK  
nP1GW6Pu  
/** !y. $J<  
* @author treeroot /H)Br~ l  
* @since 2006-2-2 63M=,0-Qt  
* @version 1.0 #tDW!Xv?  
*/ QPs:RhV7  
public class SortUtil { [7.agI@=  
public final static int INSERT = 1; YE\K<T jH  
public final static int BUBBLE = 2; :u/mTZDi  
public final static int SELECTION = 3; Ri @`a  
public final static int SHELL = 4; xA #H0?a]  
public final static int QUICK = 5; .6m_>Y6  
public final static int IMPROVED_QUICK = 6; x8\<qh*:  
public final static int MERGE = 7; "SR5wr   
public final static int IMPROVED_MERGE = 8; X#ZgS!Mn  
public final static int HEAP = 9; L/i(KF{  
6P*O&1hv  
public static void sort(int[] data) { 4pPI'd&/7  
sort(data, IMPROVED_QUICK); /g76Hw>H  
} 7&+Ys  
private static String[] name={ `R+,1"5=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" aWGon]2p  
}; 1'O0`Me>#  
P^i.La,  
private static Sort[] impl=new Sort[]{ @Y-TOCadT  
new InsertSort(), 0^&!6R  
new BubbleSort(), Z0* %Rq  
new SelectionSort(), <kbyZXV@K  
new ShellSort(), c1%rV`)]  
new QuickSort(), _|zBUrN  
new ImprovedQuickSort(), 62\&RRB i  
new MergeSort(), x_!ZycEa  
new ImprovedMergeSort(), wC` R>)  
new HeapSort() .:9s}%Z r  
}; wa:0X)KC?  
Cq\I''~8  
public static String toString(int algorithm){ M_|> kp  
return name[algorithm-1]; 'jjb[{g^}}  
} euQ.ArF  
a$JLc a  
public static void sort(int[] data, int algorithm) { cdTsRS;E  
impl[algorithm-1].sort(data); s| -FH X  
} yPgmg@G@/  
fn}UBzED\  
public static interface Sort { T ):SGW  
public void sort(int[] data); !')y&7a~  
} ;t(f1rPyE  
c/aup  
public static void swap(int[] data, int i, int j) { ~?U*6P)o  
int temp = data; 50~K,Jx6B  
data = data[j]; CxF-Z7 '  
data[j] = temp; P Sx304  
} [j9E pi(  
} BfmsMW  
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