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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。 ~ [/jk !G  
插入排序: Z s| *+[  
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package org.rut.util.algorithm.support; Z/GSR$@lI  
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import org.rut.util.algorithm.SortUtil; 5>e<|@2 X  
/** W:WRG8(F  
* @author treeroot &'DR`e O)  
* @since 2006-2-2 9T$%^H9  
* @version 1.0 >}0H5Q8@  
*/ ??#EG{{  
public class InsertSort implements SortUtil.Sort{ |V}tTx1  
DuAix)#FN9  
/* (non-Javadoc) *\iXU//^)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I:al[V2g  
*/ D'D IC  
public void sort(int[] data) { FW3E UC)P  
int temp; 3*7klu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U"UsQYa_  
} HpeU'0u0VK  
} &>Y.$eW_  
} .DnG}884  
6&LmR75C  
} 0&kmP '  
f/.f08  
冒泡排序: cj2^wmkB  
d}?KPJ{  
package org.rut.util.algorithm.support; wLfH/J  
Z;R/!Py.  
import org.rut.util.algorithm.SortUtil; +>Y]1IlI  
|{%$x^KyJ  
/** 0;w 4WJJ  
* @author treeroot 3:sx%Ci/2  
* @since 2006-2-2 PF)s>  
* @version 1.0 j,i)ecZ>  
*/ |Z o36@s  
public class BubbleSort implements SortUtil.Sort{ 0x&L'&SpN  
L&|^y8  
/* (non-Javadoc) BOdlz#&s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z -]ND  
*/ ]}&HvrOld  
public void sort(int[] data) { x],XiSyp  
int temp; ='e_9b\K  
for(int i=0;i for(int j=data.length-1;j>i;j--){ x>J(3I5_b  
if(data[j] SortUtil.swap(data,j,j-1); uXA}" f2  
} "r@G V5ED  
} 7#N= GN  
} X VKRT7U  
} j(pe6  
9A`^ (  
} 0uGTc[^^M  
k $# ,^)T  
选择排序: #>z!ns  
4^ 0CHy  
package org.rut.util.algorithm.support; O2lM;="  
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import org.rut.util.algorithm.SortUtil; ['6Sq@c)  
mZnsr@KF  
/** zSOZr2- ^a  
* @author treeroot +t]Ge >S  
* @since 2006-2-2 :hf%6N='kI  
* @version 1.0 fNrpYR X  
*/ }_+):<Db  
public class SelectionSort implements SortUtil.Sort { pG v*{.  
@c>MROlrlF  
/* 4~vn%O6n  
* (non-Javadoc) a]8W32  
* 95/;II  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :o:/RRp[  
*/ z4]z3U<}3]  
public void sort(int[] data) { m&MZn2u[4i  
int temp; @cG+ D  
for (int i = 0; i < data.length; i++) { W:8{}Iu<  
int lowIndex = i; 4dI`  
for (int j = data.length - 1; j > i; j--) { g/i.b&  
if (data[j] < data[lowIndex]) { F*4G@)  
lowIndex = j; Yic4|N?u  
} A#F6~QX(.9  
} -(#`JT8  
SortUtil.swap(data,i,lowIndex); y8v0>V0)  
} sei%QE]!/  
} )[E7\pc  
|g<l|lqz|  
} GIS,EwA  
|A=~aQot  
Shell排序: &mba{O  
&~=d;llkT  
package org.rut.util.algorithm.support; E6?0/"  
4Ub7T=LG  
import org.rut.util.algorithm.SortUtil; {J;(K~>?m  
w)>/fG|;  
/** wZj`V_3  
* @author treeroot DeQ ZDY //  
* @since 2006-2-2 }AS3]Lub@  
* @version 1.0 ]-OF3+l4  
*/ >ATccv  
public class ShellSort implements SortUtil.Sort{ ]];LA!n  
`mS0]/AV/  
/* (non-Javadoc) }%3i8e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a0`(* #P  
*/ V'l9fj*E  
public void sort(int[] data) { %(r.`I$  
for(int i=data.length/2;i>2;i/=2){ 0.^67'  
for(int j=0;j insertSort(data,j,i); V$ " ]f6  
} &(NxkZp!  
} ,,h>_IA  
insertSort(data,0,1); #*"I?B/fd8  
} FMl_I26]  
2:1 kSR^Ky  
/** 6'.CW4L  
* @param data <07~EP  
* @param j h- %RSei5  
* @param i jf=90eJc  
*/ Fw%S%*B8g  
private void insertSort(int[] data, int start, int inc) { .h@bp1)l  
int temp; n?v$C:jLN  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F^!_!V B  
} Aj"fkY|Q  
} YcM 0A~<  
} yY80E[v  
r3~YGY  
} z+j3j2  
)24 1-b V  
快速排序: .R&jRtb/E  
6I\4Yv$N  
package org.rut.util.algorithm.support; |bk$VT4\  
I:] Pd  
import org.rut.util.algorithm.SortUtil; 9i!|wkx  
KY9@2JG  
/** .:Zb~  
* @author treeroot e @|uG%  
* @since 2006-2-2 'c$)}R I7  
* @version 1.0 *,Sa*-7(  
*/ bO }9/Ay  
public class QuickSort implements SortUtil.Sort{ LC0g"{M  
0G8zFe*p  
/* (non-Javadoc)  SB^xq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >8gb/?z  
*/ 3Sn# M{wH  
public void sort(int[] data) { piAFxS<6  
quickSort(data,0,data.length-1); dK7BjZTJo  
} nOU.=N v`  
private void quickSort(int[] data,int i,int j){ 1*OZu.NdK  
int pivotIndex=(i+j)/2; dz )(~@tgz  
file://swap W9jxw4)  
SortUtil.swap(data,pivotIndex,j); 'I@l$H  
l'Uj"9r,  
int k=partition(data,i-1,j,data[j]); TL: 6Pe  
SortUtil.swap(data,k,j); P:m6:F@hO  
if((k-i)>1) quickSort(data,i,k-1); +w(B9rH  
if((j-k)>1) quickSort(data,k+1,j); ;Lk07+3G  
o=C'u  
} ]=(PtzVa  
/** Jmun^Q/h  
* @param data GNoUn7Y  
* @param i (A~w IKY,  
* @param j vFi+ExBU  
* @return B[ r04YGh  
*/ ; r95i1a'  
private int partition(int[] data, int l, int r,int pivot) { ^8 cq qu  
do{ ed$w5dv  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }k_'a^;C1  
SortUtil.swap(data,l,r); \y+@mJWa  
} ZO]P9b  
while(l SortUtil.swap(data,l,r); =8Gpov1!V~  
return l; $SdpF-'  
} r|Q/:UV?w  
<4.j] BE  
} 4 Xe8j55  
.hK:-q,  
改进后的快速排序: I"HA( +G  
jXYjs8Iy  
package org.rut.util.algorithm.support; N)  
:rEZR`  
import org.rut.util.algorithm.SortUtil; E[c6*I  
FR6 PY  
/** h<bCm`qj  
* @author treeroot 3% O[W  
* @since 2006-2-2 =!DpWVsQ  
* @version 1.0 $dF$-y<[0  
*/ 3shd0q<  
public class ImprovedQuickSort implements SortUtil.Sort { * 5(%'3  
=&WH9IKz  
private static int MAX_STACK_SIZE=4096; $ <Mf#.8%  
private static int THRESHOLD=10; OZQN&7  
/* (non-Javadoc) C(2kx4n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5>aK4: S/  
*/ oH(=T/{  
public void sort(int[] data) { Nu@dMG<5  
int[] stack=new int[MAX_STACK_SIZE]; c uHF^l  
W;|%)D)y  
int top=-1; 4X5KrecNr  
int pivot; t@q==VHF  
int pivotIndex,l,r; >FqU=Q  
^m-w@0^z  
stack[++top]=0; L$v<t/W  
stack[++top]=data.length-1; @x_0AkZU  
5TLE%#G@+  
while(top>0){ X}`39r.  
int j=stack[top--]; Ht|"91ZC5  
int i=stack[top--]; R]4 h)"  
>~L0M  
pivotIndex=(i+j)/2; D&G^|: G  
pivot=data[pivotIndex]; -x-EU#.G  
9s?gI4XN  
SortUtil.swap(data,pivotIndex,j); t\f[->f  
me$nP}%C&  
file://partition 2IXtIE  
l=i-1; hP$5>G(3  
r=j; f9vitFkb+  
do{ 5-UrHbpCZ#  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ubM  N  
SortUtil.swap(data,l,r); g1@rY0O  
} se*k56,  
while(l SortUtil.swap(data,l,r); ZP ]Ok  
SortUtil.swap(data,l,j); \=Od1i  
A0bR.*3  
if((l-i)>THRESHOLD){ Q+s2S>U{v  
stack[++top]=i; ~U5Tn3'~  
stack[++top]=l-1; z=Xh  
} ijKQ`}JA  
if((j-l)>THRESHOLD){ o $'K}U  
stack[++top]=l+1; 9U Hh#  
stack[++top]=j; >96+s)T%;  
} uw(Ml=  
"bz]5c~  
} t+D= @"BZP  
file://new InsertSort().sort(data); ;7*T6~tv  
insertSort(data); 8Yo;oHk7  
} \{v-Xe&d^  
/** U65oh8x  
* @param data 6W:FT Pt44  
*/ ]~ !CJ8d  
private void insertSort(int[] data) { q>.C5t'Qx  
int temp; /4|_A {m{m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p!DOc8a.\e  
} t*`Sme]"B  
} G!o6Y:1!  
} $LiBJ~vV<  
1fC)&4W  
} 0[ (kFe  
PsOq-  
归并排序: [3x},KM  
15OzO.Ud  
package org.rut.util.algorithm.support; `qRyh}Ax"  
q *kLi~ Oe  
import org.rut.util.algorithm.SortUtil; 1L?d/j  
A (H2Gt D  
/** w| ahb  
* @author treeroot *X^ C+F  
* @since 2006-2-2 *Ea)b -  
* @version 1.0 6OqF-nso[E  
*/ mP's4  
public class MergeSort implements SortUtil.Sort{ CeM%?fr5  
A4Q{(z-?  
/* (non-Javadoc) n)\(\V7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p_)ttcpi1  
*/ zGy+jeH:.  
public void sort(int[] data) { p,!IPWo  
int[] temp=new int[data.length]; *Uy;P>8  
mergeSort(data,temp,0,data.length-1); YMVi7D~;Q$  
} Cq'{ %  
&eqqgLz  
private void mergeSort(int[] data,int[] temp,int l,int r){ vP=H 2P  
int mid=(l+r)/2; /1$u|Gs *  
if(l==r) return ; T Qx<lw  
mergeSort(data,temp,l,mid); ~z")';I|  
mergeSort(data,temp,mid+1,r); xM@s`s|n  
for(int i=l;i<=r;i++){ !;P[Y"h@r  
temp=data; MWK)Bn  
} p.b#RY  
int i1=l; %~kE,^  
int i2=mid+1; 'Gamb+[  
for(int cur=l;cur<=r;cur++){ 53d`+an2  
if(i1==mid+1) lCBH3-0^  
data[cur]=temp[i2++]; V<?0(esgR  
else if(i2>r) -yb7s2o  
data[cur]=temp[i1++]; At !:d3  
else if(temp[i1] data[cur]=temp[i1++]; g"kET]KP"  
else *ae)<l3v  
data[cur]=temp[i2++]; p"- %~%J=  
} 2.]d~\  
} \RRSrPLd-  
Qwve-[  
} #p]V?  
rixVIfVF  
改进后的归并排序: S%B56|'  
p=#/H ,2  
package org.rut.util.algorithm.support; W~a|AU8]C  
1ox#hQBoS  
import org.rut.util.algorithm.SortUtil; PgHmOs  
:SWrx MT  
/** ^f-)gZ&  
* @author treeroot {v|ib112;  
* @since 2006-2-2 X.FoX  
* @version 1.0 uI& 0/  
*/ 9I$} =&"  
public class ImprovedMergeSort implements SortUtil.Sort { BwGOn)KL  
H8B2{]HAt  
private static final int THRESHOLD = 10; &4 #%xg  
Sa0IRC<LV  
/* 3orL;(.G  
* (non-Javadoc) 'o*\ N%  
* ;!lwB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g{uiY|  
*/ ~66v.`K!  
public void sort(int[] data) { GoH.0eQ^  
int[] temp=new int[data.length]; ZNpC& "`G  
mergeSort(data,temp,0,data.length-1); aY;34SF  
} z@?y(E  
0pl'*r*9  
private void mergeSort(int[] data, int[] temp, int l, int r) { E>gLUMG$  
int i, j, k; %cDDu$9;  
int mid = (l + r) / 2; !0|&f>y  
if (l == r) `ZO5-E  
return; .sOZ"=tW  
if ((mid - l) >= THRESHOLD) I9rQX9#B  
mergeSort(data, temp, l, mid); bY*_6SPK4  
else e%4vvPp  
insertSort(data, l, mid - l + 1); RBg2iG$ 8|  
if ((r - mid) > THRESHOLD) m^0 I3;  
mergeSort(data, temp, mid + 1, r); _3O*"S=1  
else |u$*'EsP  
insertSort(data, mid + 1, r - mid); Zy{hYHQ  
N~or.i&a  
for (i = l; i <= mid; i++) { !{ _:k%B  
temp = data; gkq~0/  
} ~k?t  
for (j = 1; j <= r - mid; j++) { pU,\ &3N  
temp[r - j + 1] = data[j + mid]; aHI~@  
} 30(e6T;   
int a = temp[l]; p]Qe5@NT  
int b = temp[r]; {ehYE^%N  
for (i = l, j = r, k = l; k <= r; k++) { TaKHr$h  
if (a < b) { 6W7,EIf  
data[k] = temp[i++]; cXN0D\%`  
a = temp; ^L Xr4  
} else { .>PwbZ  
data[k] = temp[j--]; +|K,\ {'U  
b = temp[j]; 5GPAt  
} C:bA:O  
} -x J\/"A  
} RC8-6s& ln  
\,:7=  
/** #>BC|/P}  
* @param data /BF7N3  
* @param l L=s8em]7l  
* @param i N "eK9>  
*/ >SYOtzg%  
private void insertSort(int[] data, int start, int len) { -~lrv#5Q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2!{_x8,n  
} Ls.g\Gl3  
} rfZg  
} ilQ\+xR{b  
} q?L*Luu+  
XoMgb DC  
堆排序: fg1uqS1rg  
HJ!)&xT  
package org.rut.util.algorithm.support; %VXIiu[  
?q5HAIZ`  
import org.rut.util.algorithm.SortUtil; uHDUuK:Ur  
lb"T'} q  
/** <!|=_W6  
* @author treeroot 3z8zZ1uzU  
* @since 2006-2-2 k<"N^+GSz  
* @version 1.0 :b#5 cMUe  
*/ kaDn= ={YM  
public class HeapSort implements SortUtil.Sort{ qrt2uE{K  
nXxnyom,  
/* (non-Javadoc) [~Z#yEiW^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X<1ymb3  
*/ 3|Ar~_]  
public void sort(int[] data) { `WQpGBS_z_  
MaxHeap h=new MaxHeap(); SC2g5i`  
h.init(data); !A_KCM:Ym  
for(int i=0;i h.remove(); ];0:aSi#  
System.arraycopy(h.queue,1,data,0,data.length); M49Hm[0(  
} Z \ -  
_ `7[}M~  
private static class MaxHeap{ Ax!fvcsN  
$>%zNq-F  
void init(int[] data){ wKz*)C  
this.queue=new int[data.length+1]; "xD5>(|^+Q  
for(int i=0;i queue[++size]=data; HsK5 2<  
fixUp(size); vF@.B M>  
} '9|R7  
} `"bp -/  
a\I`:RO=<Z  
private int size=0; uRw%`J4H  
8@I.\u)0  
private int[] queue; 89A04HX  
m$q*  
public int get() { ]JI A\|b6  
return queue[1]; 0+S'i82=M  
} zU};|Zw  
MK4CggoC  
public void remove() { ^#2Y4[@  
SortUtil.swap(queue,1,size--); 9, 792b  
fixDown(1); Wy$Q!R=i  
} );x[1*e  
file://fixdown hzX&BI  
private void fixDown(int k) { faI4`.i  
int j; qk(u5Z  
while ((j = k << 1) <= size) { H*>5ne=x  
if (j < size %26amp;%26amp; queue[j] j++; 8m) E~6  
if (queue[k]>queue[j]) file://不用交换 k+cHx799  
break; HC ?XNR&  
SortUtil.swap(queue,j,k); v#+tu,)V;  
k = j; .'N#qs_  
} = G3A}  
} BH=C  oD.  
private void fixUp(int k) { w9a6F  
while (k > 1) { %AuS8'Uf  
int j = k >> 1; Aaix? |XN  
if (queue[j]>queue[k])  WR"p2=  
break; JTB5#S4W  
SortUtil.swap(queue,j,k); 3836Di:{  
k = j; N DV_/BI  
} u8@>ThPD  
} ]qc2jut"  
S-+^L|  
} l,3[hx  
jDc5p3D&[]  
} $eBE pN  
K&noA  
SortUtil: v4Q8RE?  
%@FTg$  
package org.rut.util.algorithm; #65Uei|F`+  
1 {V*(=Tp  
import org.rut.util.algorithm.support.BubbleSort; |bz,cvlP W  
import org.rut.util.algorithm.support.HeapSort; {GiR-q{t  
import org.rut.util.algorithm.support.ImprovedMergeSort; `p%&c%*A  
import org.rut.util.algorithm.support.ImprovedQuickSort; ]Z\.Vx  
import org.rut.util.algorithm.support.InsertSort; <tg>1,C  
import org.rut.util.algorithm.support.MergeSort; bXiT}5mJU  
import org.rut.util.algorithm.support.QuickSort; jM3{A;U2  
import org.rut.util.algorithm.support.SelectionSort; fhmq O0  
import org.rut.util.algorithm.support.ShellSort; pJ5Sxgv{;  
uIvE~<  
/** L[*Xrp;/&  
* @author treeroot 9YpD\H`  
* @since 2006-2-2 ;[@< ,  
* @version 1.0 $9\!CPZ2  
*/ puz~Rfn#*  
public class SortUtil { Vj"B#  
public final static int INSERT = 1; PQ|kE`'  
public final static int BUBBLE = 2; K/jC>4/c/  
public final static int SELECTION = 3; DO$jX 4  
public final static int SHELL = 4; eVDI7W:(Sn  
public final static int QUICK = 5; pVt8z|p_;{  
public final static int IMPROVED_QUICK = 6; T0Q)}%L  
public final static int MERGE = 7; nrMm](Y45  
public final static int IMPROVED_MERGE = 8; Uok?FEN  
public final static int HEAP = 9; P/?`  
yla&/K;|*  
public static void sort(int[] data) { AjK'P<:/  
sort(data, IMPROVED_QUICK); W9T,1h5x  
} R;f!s/^)  
private static String[] name={ Qe=!'u.nL  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #|34(ML  
}; wbzAX  
5TVDt  
private static Sort[] impl=new Sort[]{ QOkPliX  
new InsertSort(), 'tp1|n/1  
new BubbleSort(), c?CjJ}-7  
new SelectionSort(), >v`lsCGb  
new ShellSort(), \&J7>vu^y  
new QuickSort(), !~cTe!T  
new ImprovedQuickSort(), d:6?miMH]t  
new MergeSort(), B8:_yAv o  
new ImprovedMergeSort(), aO?(ZL  
new HeapSort() SqTO~zGC  
}; i!<,8e=  
` IiAtS  
public static String toString(int algorithm){ U&|=dH]-  
return name[algorithm-1]; " ;cWK29\f  
} ` a5$VV%J  
e7ixi^Q  
public static void sort(int[] data, int algorithm) { 52BlFBNV  
impl[algorithm-1].sort(data); _mKO4Atw  
} NWSBqL5v   
Q_xE:#!;  
public static interface Sort { ig] * Z  
public void sort(int[] data); TGGeTtk=  
} [L8Bgw1  
X~GnK>R  
public static void swap(int[] data, int i, int j) { nM1U=Du  
int temp = data; [XjJsk,  
data = data[j]; H?8KTl=e  
data[j] = temp; .xuLvNyQr  
} Z}TuVE  
} p mcy(<  
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