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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。 lH@E%  
插入排序: /\a]S:V-j  
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package org.rut.util.algorithm.support; 2]aZe4H.  
LLn{2,jfQ  
import org.rut.util.algorithm.SortUtil; nHA`B.:B  
/** }8F$& AFt  
* @author treeroot "i{_<;p O  
* @since 2006-2-2 >yA,@%X  
* @version 1.0 ^8oc^LOa~2  
*/ KWh M  
public class InsertSort implements SortUtil.Sort{ -wRyMY_ D  
Jt>[]g$  
/* (non-Javadoc) qz=#;&ZU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <r+!hJ[s'  
*/ ,*nZf|  
public void sort(int[] data) { g y e(/N+I  
int temp; xV>iL(?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [b i3%yWh  
} XL7;^AE^Wl  
} _95}ifSVm  
} NBqV0>vR  
f5yux}A{  
} _{c|o{2sj  
&I}T<v{f  
冒泡排序: Q),3&4pM  
>4|c7z4  
package org.rut.util.algorithm.support; lKV\1(`  
jq("D,  
import org.rut.util.algorithm.SortUtil; l'7Mw%6{  
*L;pcg8{  
/** U.hERe ~X  
* @author treeroot P7wqZ?  
* @since 2006-2-2 >)n4s Mq  
* @version 1.0 aq0iNbv@  
*/ s@ 2 0#D  
public class BubbleSort implements SortUtil.Sort{ oWx_O-_._  
R7B,Q(q2-  
/* (non-Javadoc) bQdSX8: !R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O\4+_y  
*/ Kl aZZJ  
public void sort(int[] data) { K(Q]&&<  
int temp; <K,% y(]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ O@r.>  
if(data[j] SortUtil.swap(data,j,j-1); ckf<N9  
} =CKuiO.j  
} 5i4V5N>3  
} 77xq/c[)  
} p]h*6nH>~  
`*" H/QG  
} 9QH9gdiw  
0eqi1;$b]  
选择排序: xBL$]>  
b'7z DZI]  
package org.rut.util.algorithm.support; 8Q^6ibE  
*,W!FxJ  
import org.rut.util.algorithm.SortUtil; c/<Sa|'  
9|N" @0<B  
/** R81{<q'%X  
* @author treeroot 5@+4  
* @since 2006-2-2 crJ7pe9  
* @version 1.0 f2O*8^^Y{Q  
*/ zNV!@Yr  
public class SelectionSort implements SortUtil.Sort { ?E+:]j_  
M[YTk=IM#  
/* -t@y\vZF,  
* (non-Javadoc) b W=.K>|  
* 3!.H^v?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ':4}O#  
*/ +}7Ea:K   
public void sort(int[] data) { &c!j`86y*  
int temp; j\`EUC  
for (int i = 0; i < data.length; i++) { [lNqT1%]  
int lowIndex = i; Lj&1K~U  
for (int j = data.length - 1; j > i; j--) { n5Nan  
if (data[j] < data[lowIndex]) { :DdBn.  
lowIndex = j; ]6t]m2~\  
} n+{HNr  
} ~K~b`|1  
SortUtil.swap(data,i,lowIndex); qIbg 4uE  
} K\{b!Cfr^  
} W\@?e32  
9Z,*h-o  
} {W5ydHXy  
eg"=H50  
Shell排序: aho'|%y)  
bA@ /B'  
package org.rut.util.algorithm.support; H96BqNoO  
V~(EVF{h  
import org.rut.util.algorithm.SortUtil; Gn bfy4Z  
`fBG~NDw  
/** -}{%Q?rYj  
* @author treeroot -{X<*P4p  
* @since 2006-2-2 ixIV=#  
* @version 1.0 0jxO |N2)  
*/ (Wd_G-da  
public class ShellSort implements SortUtil.Sort{ << 3 a<I  
:+~KPn>w5  
/* (non-Javadoc) W@I 02n2 H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q>_vE{UB  
*/ =n@F$/h  
public void sort(int[] data) { 0a"igH}  
for(int i=data.length/2;i>2;i/=2){ D JLiZS  
for(int j=0;j insertSort(data,j,i); vkd[: CC  
} dB@Wn!Y  
} m#oh?@0}  
insertSort(data,0,1); T-4/d5D[  
} xGYSi5}z  
<eB<^ &nd  
/** _W)`cr  
* @param data 4$yV%[j  
* @param j -1qZqU$h  
* @param i qqnclqkw&  
*/ @S`$C  
private void insertSort(int[] data, int start, int inc) { m7$8k@r  
int temp; *#3*;dya]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); P^ptsZ%  
} wL4Z W8_  
} 3/X-Cr+d  
} `J72+RA  
5]jx5!N  
} )O,wRd>5  
CF]i}xpWV  
快速排序: >(hSW~i~  
N>+P WE$  
package org.rut.util.algorithm.support; 8g\wVKkTQp  
pv$mZi4i  
import org.rut.util.algorithm.SortUtil; A0G)imsW:_  
 t?gJNOV  
/** v`y6y8:>  
* @author treeroot C>.e+V+':  
* @since 2006-2-2 24#bMt#^  
* @version 1.0 !7}IqSs  
*/ /-h6`@[  
public class QuickSort implements SortUtil.Sort{ ,zQo {.  
U1OFDXHG  
/* (non-Javadoc) c\At0.QCA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y8G&Wg aCi  
*/ P Q7A~dw9  
public void sort(int[] data) { Y4d3n  
quickSort(data,0,data.length-1); )FRM_$t  
} bF*NWm$Lf  
private void quickSort(int[] data,int i,int j){ |+>uA[6#  
int pivotIndex=(i+j)/2; wZ#Rlv,3Wa  
file://swap ~A6"sb=  
SortUtil.swap(data,pivotIndex,j); {J (R  
MR`:5e  
int k=partition(data,i-1,j,data[j]); 1%%'6cWWu  
SortUtil.swap(data,k,j); Jlp<koy  
if((k-i)>1) quickSort(data,i,k-1); mw_ E&v  
if((j-k)>1) quickSort(data,k+1,j); VZ$=6CavH  
F8H'^3`b`U  
} WvujcmOf  
/** U#bl=%bF  
* @param data #O"  
* @param i dm6~  
* @param j eqq`TT#Z  
* @return Frk cO  
*/ F!J J6d53y  
private int partition(int[] data, int l, int r,int pivot) { X 7=fX~s  
do{ 7|YN:7iA  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J1bA2+5.*e  
SortUtil.swap(data,l,r); $(ewk):  
} u_PuqRcs  
while(l SortUtil.swap(data,l,r); 0n.S,3|  
return l; P.djd$#  
} baee?6  
+iy7e6P  
} ` @8`qXg  
$$hv`HE^l  
改进后的快速排序: Ur^j$B}  
hrbo:8SL  
package org.rut.util.algorithm.support; Ow3P-UzU3  
p,F^0OU2}:  
import org.rut.util.algorithm.SortUtil; <\" .L  
(zG.aaz*C  
/** SVagT'BB  
* @author treeroot H6gU?9%  
* @since 2006-2-2 . V$ps-t  
* @version 1.0 _d@=nK)  
*/ Bn?:w\%Ue  
public class ImprovedQuickSort implements SortUtil.Sort { ZQ3_y $  
Jic}+X*0  
private static int MAX_STACK_SIZE=4096; {^5?)/<  
private static int THRESHOLD=10; G/vC~6x  
/* (non-Javadoc) K^zDNIQU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 99=s4*xzM  
*/ "CQw/qZw  
public void sort(int[] data) { |Ps% M|8~  
int[] stack=new int[MAX_STACK_SIZE]; -h#mn2U~3r  
N j4IQ<OV  
int top=-1; ,Q/Ac{C  
int pivot; W2Luz;(U  
int pivotIndex,l,r; Zj*\"Ol  
PWB(5 f?  
stack[++top]=0; @ {#mpDX  
stack[++top]=data.length-1; cCY/gEv  
"w_N' -}#  
while(top>0){ >^$2f&z  
int j=stack[top--]; LO:fJ{ -  
int i=stack[top--]; eKN$jlg  
Bfr'Zdw  
pivotIndex=(i+j)/2; F7MzCZvu  
pivot=data[pivotIndex]; ]XA4;7  
,FZT~?  
SortUtil.swap(data,pivotIndex,j); W `z 0"  
VR5fqf|*  
file://partition O7t(,uox3y  
l=i-1; Vp}^NNYf  
r=j; k+^'?D--'P  
do{ Gi FXX  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); KCuG u}  
SortUtil.swap(data,l,r); B*1W`f  
} ZJ,cQ+fn  
while(l SortUtil.swap(data,l,r); Thr*^0$C  
SortUtil.swap(data,l,j); 7@}$|u:JUF  
8K9$,Ii  
if((l-i)>THRESHOLD){ Ucdj4[/,h  
stack[++top]=i; ;WU<CKYG*  
stack[++top]=l-1; >dzsQ^Nj  
} AeuX Qt  
if((j-l)>THRESHOLD){ (08I  
stack[++top]=l+1; ,#]t$mzbQ(  
stack[++top]=j; j' 0r'  
} ?7MqeR4/E  
=Gk/k}1  
} \5)htL1F  
file://new InsertSort().sort(data); :_kAl? eJ  
insertSort(data); ]i*](UQ  
} ,`A?!.K$  
/** fyWO  
* @param data *&Lq!rFS  
*/ SP]IUdE\  
private void insertSort(int[] data) { DI|:p!Nx  
int temp; L,,*gK  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]aryV?!6  
} zTbVp8\pI  
} C0*@0~8$9  
} 6t'l(E +  
f~{}zGTM:  
} cbYLU\!  
Q&'}BeUbm  
归并排序: JRMM?y  
Wu6<\^A  
package org.rut.util.algorithm.support; 'b*%ixa  
U-k VNBs  
import org.rut.util.algorithm.SortUtil; Gfp1mev   
`qVjwJ!+  
/** L I>(RMv  
* @author treeroot )~6zYJ2  
* @since 2006-2-2 k>jbcSY(z<  
* @version 1.0 _ee dBpV  
*/ 7Q w|!  
public class MergeSort implements SortUtil.Sort{ 4 1a. #o  
CSPKP#,B0[  
/* (non-Javadoc) F}GPZ=T;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sbj(|1,ac  
*/ 2F#q I1  
public void sort(int[] data) { bI.t <;  
int[] temp=new int[data.length]; )vg5((C  
mergeSort(data,temp,0,data.length-1); Mb1t:Xf^g  
} KOz(TZ?u  
[+m?G4[  
private void mergeSort(int[] data,int[] temp,int l,int r){ l7{oi!   
int mid=(l+r)/2; {gNV[45  
if(l==r) return ; >gwz,{  
mergeSort(data,temp,l,mid); D]a<4a 18  
mergeSort(data,temp,mid+1,r); !\8  ;d8  
for(int i=l;i<=r;i++){ qn1255fB  
temp=data; 73#x|lY  
} [YrHA~=U  
int i1=l; 0$+fkDf  
int i2=mid+1; G 0O#/%%  
for(int cur=l;cur<=r;cur++){ Vm}%ttTC  
if(i1==mid+1) mI*[>#q>  
data[cur]=temp[i2++]; oh"O07  
else if(i2>r) h7*W *Bd  
data[cur]=temp[i1++]; `Q3s4VEC  
else if(temp[i1] data[cur]=temp[i1++]; |tR OL 9b  
else v:Tzv^  
data[cur]=temp[i2++]; r_e7a6  
} =0;}K@(J  
} uEyH2QO  
gBh;=vOD  
} km^^T_ M/  
Ofm%:}LV  
改进后的归并排序: AcI,N~~  
VvFC -r,=G  
package org.rut.util.algorithm.support; ")O`mXg-  
VhjM>(  
import org.rut.util.algorithm.SortUtil; joKIrS0y  
Uw,2}yR  
/** 53-v|'9'  
* @author treeroot ;z M*bWh9  
* @since 2006-2-2 1&;QyTN  
* @version 1.0 -[U1]R  
*/ wn_b[tdxq  
public class ImprovedMergeSort implements SortUtil.Sort { x8\A<(G_M=  
PHA-9\jC{  
private static final int THRESHOLD = 10; ;S0Kh"A  
8]4U`\k4  
/* A;\ 7|'4  
* (non-Javadoc) %AOja+  
* W^3uEm&l!)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 322jR4QGr  
*/ ]EwVpvTw  
public void sort(int[] data) { r]3'74j:  
int[] temp=new int[data.length]; J psPNa  
mergeSort(data,temp,0,data.length-1); <E\$3Ym9  
} H$G0`LP0/a  
!T](Udf  
private void mergeSort(int[] data, int[] temp, int l, int r) { J!'@Bd  
int i, j, k; yV_4?nh  
int mid = (l + r) / 2; h/B>S  
if (l == r) "qc6=:y}  
return; .9md~j:o^s  
if ((mid - l) >= THRESHOLD) yQ#:J9HMJ  
mergeSort(data, temp, l, mid); kJW N.  
else #Z6'?p9  
insertSort(data, l, mid - l + 1); L?5Ck<!xG  
if ((r - mid) > THRESHOLD) hx/N1 x  
mergeSort(data, temp, mid + 1, r); "4vy lHIo  
else Dfq(Iv  
insertSort(data, mid + 1, r - mid); Hwo$tVa:=  
T3`ludm^u  
for (i = l; i <= mid; i++) { tmqY2.   
temp = data; 1x,[6H  
} aK`@6F,]j  
for (j = 1; j <= r - mid; j++) { atXS-bg*  
temp[r - j + 1] = data[j + mid]; Qs9gTBS;  
} DW)2 m;  
int a = temp[l]; DJgTA]$&  
int b = temp[r]; b~nAPY6  
for (i = l, j = r, k = l; k <= r; k++) { OKF tl  
if (a < b) { /-#I_>:8'  
data[k] = temp[i++]; yHxosxd<*  
a = temp; M33_ja+L  
} else { ~z"= G5|  
data[k] = temp[j--]; r}uz7}z %"  
b = temp[j]; D#&q&6P{  
} nLV9<M Zm  
} y*D]Q`5cag  
} Oft4- 4$E  
sP^R/z|Y  
/** [s&$l G!  
* @param data V+I|1{@i0  
* @param l tv!_e$CR  
* @param i a'!zG cT  
*/ Qt vYv!  
private void insertSort(int[] data, int start, int len) { [HCAmnb  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +la2n(CAK  
} pv&y91  
} B<C*  
} KiJT!moB  
} O(+phRwJ  
}:Z#}8  
堆排序: H,N)4;F<c  
=m5SK5vLKT  
package org.rut.util.algorithm.support; ?_I[,N?@41  
NJNJjdD>  
import org.rut.util.algorithm.SortUtil; SR DXfkoI  
X^WrccNX  
/** JPGzrEaZ  
* @author treeroot 7"8hC  
* @since 2006-2-2 +[5.WC7J  
* @version 1.0 Qx[t /~  
*/ qIld;v8w"g  
public class HeapSort implements SortUtil.Sort{ -WYAN:s  
P;k0W>~k  
/* (non-Javadoc) z )HD`Ho  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h,Q3oy\s1  
*/ QR1{ w'c  
public void sort(int[] data) { d> {nQF;c  
MaxHeap h=new MaxHeap(); 44-R!  
h.init(data); <vXGi  
for(int i=0;i h.remove(); 8P=o4lO+  
System.arraycopy(h.queue,1,data,0,data.length); C`5  
} OK\A</8r  
w: >5=mfk  
private static class MaxHeap{ cK 06]-Y  
=b/L?dR.-  
void init(int[] data){ -&<Whhs.@  
this.queue=new int[data.length+1]; ^a#X9  
for(int i=0;i queue[++size]=data; Offu9`DiZ  
fixUp(size); Me=CSQqf<  
}  Br` IW  
} tO0!5#-VR  
/PLn+-  
private int size=0; y~75r\"R  
&gjF4~W]  
private int[] queue; qbv#I;  
q `pP$i:  
public int get() { |^A;&//  
return queue[1]; F{UP;"8'  
} e @IA20  
d 9q(xZ5  
public void remove() { :H c0b=  
SortUtil.swap(queue,1,size--); 5|1 T}Z#;  
fixDown(1); z Toq^T  
} l&[;rh  
file://fixdown 3\Xbmq8}  
private void fixDown(int k) { 0Q^Ikiv   
int j; CxfRV L`7  
while ((j = k << 1) <= size) { A\#iXOd  
if (j < size %26amp;%26amp; queue[j] j++; Aj0Tfdxy  
if (queue[k]>queue[j]) file://不用交换 2 aL)  
break; VZ\B<i  
SortUtil.swap(queue,j,k); A,`8#-AX  
k = j; VqS#waNrx  
} kcQ'$<Mz<  
} FXs*vg`  
private void fixUp(int k) { 4n4?4BEn  
while (k > 1) { hiUD]5Kp  
int j = k >> 1; 8H_l:Z[:i  
if (queue[j]>queue[k]) D_x +:1(  
break; 4T=u`3pD7l  
SortUtil.swap(queue,j,k); kV3 8`s>+  
k = j; N2w"R{)j\  
} 0C>%LJ8r  
} 5sb\r,kW  
eQ&ZX3*}  
} . Z%{'CC  
3K_A<j:  
} f/V 2f].  
7P9=)$(EH  
SortUtil: 1Uqu> '  
,dx3zBI  
package org.rut.util.algorithm; PK"c4>q  
"70WUx(\t  
import org.rut.util.algorithm.support.BubbleSort; G8;w{-{m  
import org.rut.util.algorithm.support.HeapSort; S*n@81Z  
import org.rut.util.algorithm.support.ImprovedMergeSort; *f?4   
import org.rut.util.algorithm.support.ImprovedQuickSort; u{*SX k  
import org.rut.util.algorithm.support.InsertSort; K#U<ib-v  
import org.rut.util.algorithm.support.MergeSort; T8HF|%I  
import org.rut.util.algorithm.support.QuickSort; Kh MSL  
import org.rut.util.algorithm.support.SelectionSort; _N@ro  
import org.rut.util.algorithm.support.ShellSort; 2"B_At  
n+PzA[  
/** 0D&t!$Ibf  
* @author treeroot SGe^ogO"v  
* @since 2006-2-2 rSJ9 v :  
* @version 1.0 ?|39u{  
*/ M{*Lp6h  
public class SortUtil { |gU(s  
public final static int INSERT = 1; `+uhy ,  
public final static int BUBBLE = 2; (x3.poSt  
public final static int SELECTION = 3; .<Zy|1 4  
public final static int SHELL = 4; c.j$9=XLBG  
public final static int QUICK = 5; ,L`$09\  
public final static int IMPROVED_QUICK = 6; p8]68!=W\F  
public final static int MERGE = 7; |Z*J/v'@p  
public final static int IMPROVED_MERGE = 8; }5 (Ho$S(  
public final static int HEAP = 9; ka3u&3"  
vo#UtN:q  
public static void sort(int[] data) { D`VM6/iQR  
sort(data, IMPROVED_QUICK); ph-ATJ"  
} PZ*pQ=`  
private static String[] name={ %Jrt4sg[j-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 67VT\f  
}; di>cMS 4 c  
L*~J%7  
private static Sort[] impl=new Sort[]{ R>(@Z M&  
new InsertSort(), dx+hhg\L  
new BubbleSort(), $]/Zxd  
new SelectionSort(), jb^N|zb  
new ShellSort(), oDU ;E  
new QuickSort(), ruazOmnn~  
new ImprovedQuickSort(), mzf+Cu:` v  
new MergeSort(), k0Uyf~p~  
new ImprovedMergeSort(), !H}vu]R  
new HeapSort() t>[KVVg W  
}; (4Zts0O\  
Qu]z)";7  
public static String toString(int algorithm){ !OuWPH. :  
return name[algorithm-1]; Gqy,u3lE  
} =-}[ ^u1  
I:d[Q s  
public static void sort(int[] data, int algorithm) { :=[XW?L%x  
impl[algorithm-1].sort(data); n8D xB@DI  
} KFFSv{m[  
|K|h+fgG6*  
public static interface Sort { g'|MA~4yB  
public void sort(int[] data); 3dRr/Ilc  
} H[='~%D  
I;1lX L  
public static void swap(int[] data, int i, int j) { ?A )hN8  
int temp = data; d:i;z9b@to  
data = data[j]; MKWyP+6`  
data[j] = temp; #Z<a  
} 6KOlY>m]  
}  1"e)5xI  
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