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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。 A T'P=)F@  
插入排序: EU"J'?  
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package org.rut.util.algorithm.support; <m3or  
zr5(nAl  
import org.rut.util.algorithm.SortUtil; uepL"%.@7|  
/** Lb} cjI:  
* @author treeroot ?Ok@1  
* @since 2006-2-2 r(::3TF%#q  
* @version 1.0 SS/t8Y4W  
*/ `Ufv,_n  
public class InsertSort implements SortUtil.Sort{ @ dF]X  
/P3s.-sL  
/* (non-Javadoc) 0{ ;[k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p&#*  
*/ Y?>us  
public void sort(int[] data) { k;9"L90  
int temp; Vt!<.8&`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G]- wN7G  
} "=BO,see9  
} +#d}3^_]  
} pt!Q%rXm  
U~w g'  
} ToB^/ n[  
2m?!!We q  
冒泡排序: 2i@t;h2E  
BOQeP/>  
package org.rut.util.algorithm.support; OLdD3OI  
gxku3<S  
import org.rut.util.algorithm.SortUtil; F}lgy;=h  
qWzzUM1=  
/** h1 D#,  
* @author treeroot C;jV{sb9c  
* @since 2006-2-2 l?/.uNw  
* @version 1.0 p~sfd  
*/ ~BVK6  
public class BubbleSort implements SortUtil.Sort{ [?$|   
`>q|_w \e  
/* (non-Javadoc) r12{XW?~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2z\4?HJy  
*/ ,ZYj8^gF  
public void sort(int[] data) { H<SL=mb;  
int temp; WR*|kh  
for(int i=0;i for(int j=data.length-1;j>i;j--){ YORFq9a{R  
if(data[j] SortUtil.swap(data,j,j-1); r $du-U  
} .=>T yq  
} 1@ j>2>i  
} J9LS6~ 7  
} vl@t4\@3  
O8+[ )+6^  
} k:4?3zJI  
fxDY:l  
选择排序: )Q\ZYCPOr  
ndm19M8Y|  
package org.rut.util.algorithm.support; j}R4m h  
1q!JpC^  
import org.rut.util.algorithm.SortUtil; n;"4`6L~  
W RAW%?$  
/** wS2iyrIB  
* @author treeroot lO9{S=N  
* @since 2006-2-2 ED/-,>[f  
* @version 1.0 T^a {#B  
*/ 5Ag>,>kJ6  
public class SelectionSort implements SortUtil.Sort { )).;p_nLZ  
(nrrzOax  
/* $ Yz &x%Lb  
* (non-Javadoc) (Df<QC`0v  
* ^c]Sl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^+[o +  
*/ 4C /8hsn  
public void sort(int[] data) { Hcd>\0  
int temp; +^+wS`Y  
for (int i = 0; i < data.length; i++) { A!k}  
int lowIndex = i; BH0rT})  
for (int j = data.length - 1; j > i; j--) { Gx ZQ{ \  
if (data[j] < data[lowIndex]) { @` .u"@  
lowIndex = j; l7{hq}@;cC  
} 1|w,Z+/  
} /^[)JbgB  
SortUtil.swap(data,i,lowIndex); Re1@2a>  
} d L%E0o  
} (&MSP  
TiBE9  
} `A <yDy  
Vd<= y  
Shell排序: 0HD1Ob^@  
HHnabSn}{q  
package org.rut.util.algorithm.support; ,.`^Wx6F  
\>=YxB q  
import org.rut.util.algorithm.SortUtil; 8)POEY4  
CJKH"'u3^  
/** Br~%S?4"o  
* @author treeroot nnGA_7-t  
* @since 2006-2-2 $PS5xD~@  
* @version 1.0 ` `;$Kr  
*/ <Z8] W1)  
public class ShellSort implements SortUtil.Sort{ Ee|+uQ981>  
Xi{(1o4%  
/* (non-Javadoc) }ZmdX^xB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J#x91Jh  
*/ 1UM]$$:i  
public void sort(int[] data) { Ba+OoS  
for(int i=data.length/2;i>2;i/=2){ k(qQvn  
for(int j=0;j insertSort(data,j,i); CQ( @7  
} !F<?he<U  
} 4P~<_]yf  
insertSort(data,0,1); YqJIp. Z  
} W"-nzdAJ5  
Nz}Q"6L  
/** S-/ #3  
* @param data :9h8q"T  
* @param j kTk?[BK  
* @param i JZXc1R| 9  
*/ ?0(B;[xEJ  
private void insertSort(int[] data, int start, int inc) { =5|5j!i=q  
int temp; a,4g`?  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); aBI]' D;  
} ; p_X7N  
} 5->PDp  
} |K_B{v.   
Ii,:+o%  
} ". 0W8=  
aOD"z7}U  
快速排序: I>5@s;  
#CS>A# Lk  
package org.rut.util.algorithm.support; Zb }PP;O  
JgB# EoF  
import org.rut.util.algorithm.SortUtil; ( 7?%Hg  
w?tKL0c  
/** 7xc<vl#:q7  
* @author treeroot r9Z/y*q  
* @since 2006-2-2 fEjW7 c  
* @version 1.0 CN=&Je%I  
*/ 1;P\mff3Y  
public class QuickSort implements SortUtil.Sort{ ^8m+*t  
*mQit/ k.  
/* (non-Javadoc) @(cS8%wK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0uz"}v)  
*/ 6\3k0z  
public void sort(int[] data) { ]1&9~TL  
quickSort(data,0,data.length-1); OVyy}1Hx  
} n{t',r50  
private void quickSort(int[] data,int i,int j){ HUC2RM?FN  
int pivotIndex=(i+j)/2; ^PQV3\N  
file://swap |&Pl4P  
SortUtil.swap(data,pivotIndex,j); dNQSbp  
)!d1<p3  
int k=partition(data,i-1,j,data[j]); :xPvEK[B7  
SortUtil.swap(data,k,j); AuTplO0_rE  
if((k-i)>1) quickSort(data,i,k-1); Qm#i"jvV  
if((j-k)>1) quickSort(data,k+1,j); hzLGmWN2j8  
$t$f1?  
}  W6O.E  
/** l,u{:JC  
* @param data $-]setdY  
* @param i ^qx\e$R  
* @param j 5{q/z^]  
* @return  _)E8XyzF  
*/ ennz/'  
private int partition(int[] data, int l, int r,int pivot) { @izi2ND  
do{ :WIf$P?X  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); f#kevf9zc  
SortUtil.swap(data,l,r); !2| `aa  
} 9'q/&uH  
while(l SortUtil.swap(data,l,r); {H; |G0tR  
return l; T(UYlLe  
} }AW)R&m  
&H1D!N  
} Zk#i9[g9*  
4sBoD=e  
改进后的快速排序: KOEi_9i}  
m=\eL~ h  
package org.rut.util.algorithm.support; ** r?    
0^.4eX:E_  
import org.rut.util.algorithm.SortUtil; u7zB9iQ&  
"!Oh#Vf  
/** k*3_) S -  
* @author treeroot 0nz@O^*g(  
* @since 2006-2-2 *7;*@H*jd  
* @version 1.0 q4GW=@eD  
*/ kqigFcz!Y  
public class ImprovedQuickSort implements SortUtil.Sort { Bb [e[,ah  
_K}_h\e.  
private static int MAX_STACK_SIZE=4096; G\>\VA  
private static int THRESHOLD=10; tD7C7m  
/* (non-Javadoc) FR,#s^kF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y8*@dRrq  
*/ 0rJ\e  
public void sort(int[] data) { ICCCCG*[  
int[] stack=new int[MAX_STACK_SIZE]; vYR=TN=Z4  
7R<u=U  
int top=-1; EXW 6yXLV  
int pivot; ZYR,8y  
int pivotIndex,l,r; 2PP-0 E  
KT;C RO>  
stack[++top]=0; _l!U[{l*d  
stack[++top]=data.length-1; e|5B1rMM  
76_8e{zbr  
while(top>0){ />^`*e_  
int j=stack[top--]; kYA'PW/[ )  
int i=stack[top--]; b8{h[YJL2  
TaQ "G  
pivotIndex=(i+j)/2; C*y6~AYN#  
pivot=data[pivotIndex]; U??f<  
_ 2gT1B  
SortUtil.swap(data,pivotIndex,j); z^!A/a[[!  
\B>[je-d  
file://partition kLPO+lg+  
l=i-1; MY?O/,6  
r=j; xH`j7qK.  
do{ M~z (a3@[V  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4-d99|mv  
SortUtil.swap(data,l,r); ,LW(mdIe(  
} {GX &)c4  
while(l SortUtil.swap(data,l,r); Z\*5:a]  
SortUtil.swap(data,l,j); )kL` &+#>  
OHtgn  
if((l-i)>THRESHOLD){ k{}[>))Q  
stack[++top]=i; k;K> ,$ F  
stack[++top]=l-1; 3<jAp#bE  
} &w;^m/zP3  
if((j-l)>THRESHOLD){ QSn;a 4f  
stack[++top]=l+1; v't6 yud  
stack[++top]=j; V 4\^TO`q=  
}  J:~[ j  
&3 XFg Ho  
} G&%nF4  
file://new InsertSort().sort(data); iJdrY 6qd  
insertSort(data); k}I5x1>&  
} `uNvFlP  
/** H)j [eZP  
* @param data 5I)~4.U|,m  
*/ f74%YY  
private void insertSort(int[] data) { U!a!|s>  
int temp; "LP, TC  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iL7-4Lv#  
} Wk\mgGn+  
} M 9(ez7Z  
} dJ%wVY0z=  
LY\ddI*s  
} y"|K |QT  
@O}IrC!bf  
归并排序: G!!-+n<  
=9;[C:p0-  
package org.rut.util.algorithm.support; B91S h`  
ueWR/  
import org.rut.util.algorithm.SortUtil; Qfkh0DX B  
9atjK4+o  
/** r3+<r<gs  
* @author treeroot Eu`2w%qz  
* @since 2006-2-2 pgz:F#>  
* @version 1.0 z9k*1:  
*/ 2X qTyf<  
public class MergeSort implements SortUtil.Sort{ LPq*ZZK  
,h%D4EVx  
/* (non-Javadoc) m%e^&N#%6r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5`4}A%@&  
*/ ^3Z7dIUww  
public void sort(int[] data) { hw&ke$Fg#  
int[] temp=new int[data.length]; JYZ2k=zh  
mergeSort(data,temp,0,data.length-1); ,~?A,9?%:  
} 8 *4@-3Sx  
MuDFdbtR  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]^iFqQe  
int mid=(l+r)/2; c8^+^.=pX  
if(l==r) return ; d u.HSXK  
mergeSort(data,temp,l,mid); a~8:rW^  
mergeSort(data,temp,mid+1,r); :[y]p7;{f  
for(int i=l;i<=r;i++){ D+| K%_Qq  
temp=data; e+NWmu{<_  
} :.C+?$iuX  
int i1=l; @IEI%vH  
int i2=mid+1; R(M}0JRm  
for(int cur=l;cur<=r;cur++){ W0VA'W  
if(i1==mid+1) ggerh#  
data[cur]=temp[i2++]; [Xxw]C6\>(  
else if(i2>r) l\K%  
data[cur]=temp[i1++]; |$YyjYK  
else if(temp[i1] data[cur]=temp[i1++]; `)rg|~#k  
else  5Waw?1GL  
data[cur]=temp[i2++]; JaH* rDs-  
} e{v,x1Y_z(  
} ^dFh g_GhF  
\BN|?r$a  
} LiiK3!^i  
"nVK< Vd  
改进后的归并排序: R ^HohB  
Zw2jezP@t  
package org.rut.util.algorithm.support; zl0;84:H  
mG0L !5  
import org.rut.util.algorithm.SortUtil; /m97CC#+  
S$S_nNq  
/** l*$WX=h6n  
* @author treeroot Q}WL/X5  
* @since 2006-2-2 6a7vlo  
* @version 1.0 ?lF mXZy`  
*/ aL88E  
public class ImprovedMergeSort implements SortUtil.Sort { J cP~-cp  
r])Z9bbi  
private static final int THRESHOLD = 10; V{43HA10b  
g+e:@@ug  
/* I!61 K  
* (non-Javadoc) XFtOmY  
* DLU[<! C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b2G2c L-(  
*/ z9^c]U U)E  
public void sort(int[] data) { U9x4j_.q  
int[] temp=new int[data.length]; >H$;Z$o*(  
mergeSort(data,temp,0,data.length-1); }6<)yW}U  
} v5B" A"N  
w2k<)3 g~  
private void mergeSort(int[] data, int[] temp, int l, int r) { xsYE=^uv  
int i, j, k; ]Qd{ '}+  
int mid = (l + r) / 2; Jth=.9mrM  
if (l == r) )^&,Dj   
return; J`W-]3S#  
if ((mid - l) >= THRESHOLD) \WcB9  
mergeSort(data, temp, l, mid); kQy&I3  
else 5!t b$p#z  
insertSort(data, l, mid - l + 1); `{DG;J03[  
if ((r - mid) > THRESHOLD) p<q].^M  
mergeSort(data, temp, mid + 1, r); CldDr<k3  
else b"Zq0M0 l  
insertSort(data, mid + 1, r - mid); *_ PPrx5  
)AJ=an||5  
for (i = l; i <= mid; i++) { vm|!{5l:=y  
temp = data; I'dj.  
} `%oIRuYG]j  
for (j = 1; j <= r - mid; j++) { 3I]Fdp)'  
temp[r - j + 1] = data[j + mid]; 7(NXCAO81  
}  +tIz[+u  
int a = temp[l]; (|dPeix|  
int b = temp[r]; nx B32  
for (i = l, j = r, k = l; k <= r; k++) { -3` "E%9  
if (a < b) { a&C.=  
data[k] = temp[i++]; ^Z#@3 =  
a = temp; jQ?LHUE  
} else { +1/b^Ac  
data[k] = temp[j--]; tfA}`*$s  
b = temp[j]; +TF8WZZF.d  
} S.W^7Ap  
} qi&D+~Gv!  
} 'PpZ/ry$  
XMw.wQ '?  
/** a8zZgIV  
* @param data qU-!7=}7  
* @param l 1q] & 7R  
* @param i 'B`#:tX^N  
*/ O:e#!C8^  
private void insertSort(int[] data, int start, int len) { p,;mYms  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); AWT"Y4Ie  
} +I@cO&CY|  
} (ii( yz|  
} RLHYw@-j@  
} y(}Eko4u5  
?mU\ N0o  
堆排序: TF\sP8>V  
kYlg4 .~M  
package org.rut.util.algorithm.support; Sy  
Y@%`ZPJ  
import org.rut.util.algorithm.SortUtil; c+2sT3).D  
kiX%3(  
/** #tDW!Xv?  
* @author treeroot EnJ!mr  
* @since 2006-2-2 f-D>3qSS  
* @version 1.0 H\#:,s{1  
*/ 1 i3k  
public class HeapSort implements SortUtil.Sort{ |')-VhLLK  
oH X$k{6  
/* (non-Javadoc) rwgsXS8W6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mU@xc N  
*/ 5)M 2r!\  
public void sort(int[] data) { ARWZ; GX  
MaxHeap h=new MaxHeap(); sS9%3i/>  
h.init(data); n8u*JeN  
for(int i=0;i h.remove(); j?-R]^-5  
System.arraycopy(h.queue,1,data,0,data.length); #epy%>  
} HnU Et/  
;^3$kF  
private static class MaxHeap{ 1'O0`Me>#  
jg_n7  
void init(int[] data){ W&C-/O,m  
this.queue=new int[data.length+1]; -5k2j^r;  
for(int i=0;i queue[++size]=data; N wtg%;  
fixUp(size); o`6|ba  
} A,#2^dR  
} _Y!sVJ){,c  
_~M^ uW^l  
private int size=0; XUS vhr$|  
Oy_c  
private int[] queue; -^SA8y  
 'Cc(3  
public int get() { zwr\:Hu4  
return queue[1]; $$1qF"GF  
} e:-8k_0|  
lddp^ #f  
public void remove() { b{5K2k&,  
SortUtil.swap(queue,1,size--); }V`mp  
fixDown(1); ^Z}Ob= .G  
} VQxpN 1  
file://fixdown PDP[5q r  
private void fixDown(int k) { ao$.6X8fQ  
int j; x0Z5zV9  
while ((j = k << 1) <= size) { k \qiF|B)Z  
if (j < size %26amp;%26amp; queue[j] j++; rU2iy"L  
if (queue[k]>queue[j]) file://不用交换 JTW)*q9a  
break; g^~Kze  
SortUtil.swap(queue,j,k); ?c#$dc"  
k = j; \Fb| {6+  
} n&Yk<  
} #T3 h}=  
private void fixUp(int k) { XDz5b.,  
while (k > 1) { t"AzI8O  
int j = k >> 1; la^ DjHA$  
if (queue[j]>queue[k]) 23ze/;6%A  
break; pq! %?m]  
SortUtil.swap(queue,j,k); !#x=JX  
k = j; z#Nl@NO&  
} Tg ?x3?kw  
} K :LL_,  
6Bt=^~d  
} yR71%]*.  
%[QV,fD'E  
} 0 P|&Pq&IH  
K_BPZ5w  
SortUtil: 7;}l\VXHm  
L;6.r3bL  
package org.rut.util.algorithm; TMVryb  
Oejq@iM"(  
import org.rut.util.algorithm.support.BubbleSort; SpSnoVI  
import org.rut.util.algorithm.support.HeapSort; =zg:aTMti  
import org.rut.util.algorithm.support.ImprovedMergeSort; s8gU7pT49  
import org.rut.util.algorithm.support.ImprovedQuickSort; q6q1\YB  
import org.rut.util.algorithm.support.InsertSort; qE7R4>5xjO  
import org.rut.util.algorithm.support.MergeSort; x"4%(xBu  
import org.rut.util.algorithm.support.QuickSort; =Agg_h   
import org.rut.util.algorithm.support.SelectionSort; ANMg  
import org.rut.util.algorithm.support.ShellSort; ,?-\ x6  
]!{y a8  
/** Ff4*IOZ}(  
* @author treeroot 9.+/~$Ht  
* @since 2006-2-2 SZ!=`a]  
* @version 1.0 C;rG]t^%  
*/ mY&ud>,U:  
public class SortUtil { )j&"%[2F  
public final static int INSERT = 1; )g1a'G  
public final static int BUBBLE = 2; RMXzU  
public final static int SELECTION = 3; I$q>  
public final static int SHELL = 4; Rm>^tu -  
public final static int QUICK = 5; g /+oZU  
public final static int IMPROVED_QUICK = 6; &jQ?v@|1c  
public final static int MERGE = 7; 6XV<? 9q  
public final static int IMPROVED_MERGE = 8; % 4 ~l  
public final static int HEAP = 9; !.X.tc  
E l&h;N   
public static void sort(int[] data) { ~Gv#iRi>  
sort(data, IMPROVED_QUICK); .0y%5wz8j  
} }iN2KeLAF  
private static String[] name={ : mGAt[Cc  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6LUC!Sh  
};  Qo0H  
m6n!rRQ^U  
private static Sort[] impl=new Sort[]{ X]*QUV]i  
new InsertSort(), Mtm OUI&'  
new BubbleSort(), e 9$C#D> D  
new SelectionSort(), 2z0n<`  
new ShellSort(), \ZXLX'-  
new QuickSort(), kJK,6mN  
new ImprovedQuickSort(), Xa 9TS"  
new MergeSort(), \c`oy=qY0  
new ImprovedMergeSort(), CQg X=!q  
new HeapSort() ] Uc`J8p,  
}; ZU&"73   
3 /6/G}s  
public static String toString(int algorithm){ '?*g%Yuz  
return name[algorithm-1];  -7]Xjb5  
} W0`Gc {  
]> !<G8 =N  
public static void sort(int[] data, int algorithm) { 0lk;F  
impl[algorithm-1].sort(data); C 'mL&  
} s4= "kT]  
 t,%iL  
public static interface Sort { f^Bc  
public void sort(int[] data); LJzH"K[Gg6  
} vP-M,4c  
6vzk\n  
public static void swap(int[] data, int i, int j) { k!XhFWb  
int temp = data; Ju` [m  
data = data[j]; L):qu  
data[j] = temp; vq'c@yw;  
} 748CD{KxW  
} +{`yeZ9S  
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