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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。 M~Qj'VVL  
插入排序: xs!g{~V{  
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package org.rut.util.algorithm.support; oNB,.:  
xDJ+BQ<1A  
import org.rut.util.algorithm.SortUtil; l(#ke  
/** yW^IN8fm  
* @author treeroot {R-82%X  
* @since 2006-2-2 vX0"S  
* @version 1.0 ZQ~myqx,+L  
*/ [W$Z60?RR  
public class InsertSort implements SortUtil.Sort{ 5!F\h'E  
+Y)#yGUn  
/* (non-Javadoc) i*CQor6|z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tz[?gF.Do  
*/ kAN;S<jSE  
public void sort(int[] data) { `{U%[$<[W  
int temp; y[p$/$bgC5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ml.;wB|  
} 3z)"U  
} LxlbD#<V  
} QW~5+c9JJ  
M6]0Y@@>  
} 6 W;?8Z_1  
bugFl>  
冒泡排序: %,,`N I{  
;wXY3|@  
package org.rut.util.algorithm.support; p x|>v8  
1Vf78n  
import org.rut.util.algorithm.SortUtil; oY%"2PW1B  
cRh\USS  
/** C~{NKMeC/m  
* @author treeroot K2xH'v O(  
* @since 2006-2-2 =0h|yjnL/  
* @version 1.0 2K]IlsMO&  
*/ Y:%m;b$]  
public class BubbleSort implements SortUtil.Sort{ drENkS=,  
@1v3-n=  
/* (non-Javadoc) kz0I2!bt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i)7n c  
*/ ]D LZ&5pv  
public void sort(int[] data) { v`S2M  
int temp; }A1|jY)x  
for(int i=0;i for(int j=data.length-1;j>i;j--){ K[uY+!'1  
if(data[j] SortUtil.swap(data,j,j-1); -".kH<SWv  
} mA(nyF  
} LAv:+o(m/  
} "Su b4F`  
} Cs:+93w  
>-5td=:Z  
} .!yWF?T8  
1mHwYT+  
选择排序: ]6{(Hjt  
qGnPnQc  
package org.rut.util.algorithm.support; &so-O90  
-RG8<bI,  
import org.rut.util.algorithm.SortUtil; P>*Fj4 Z~  
-ca7x`yo  
/** . [T'yc:=  
* @author treeroot %n05 Jitl  
* @since 2006-2-2 @up&q  
* @version 1.0 7 9Qc`3a  
*/ 5/B#)gm  
public class SelectionSort implements SortUtil.Sort { D:wnO|:  
>vWEUE[  
/* 6FL?4>MZ  
* (non-Javadoc) _urG_~q  
* c ]>DI&$;J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6OL41g'  
*/ lSH ZV Fd  
public void sort(int[] data) { XkPv*%Er8  
int temp; XC|*A$x,  
for (int i = 0; i < data.length; i++) { )v%l0_z{  
int lowIndex = i; z,pNb%*O  
for (int j = data.length - 1; j > i; j--) { 6xH;: B)d  
if (data[j] < data[lowIndex]) { X=v~^8M7%  
lowIndex = j; 5>k>L*5J  
} )@}A r  
} }m6f^fs}  
SortUtil.swap(data,i,lowIndex); ,~(|p`  
} QVIcb ;&:}  
} lijB#1<8*  
tNK^z7Dm  
} oW0gU?Rr)u  
Q  |  
Shell排序: ,{k<JA {  
~?#~Ar  
package org.rut.util.algorithm.support; m</]D WJ  
}>2t&+v+  
import org.rut.util.algorithm.SortUtil; JC=dYP}  
C<_ Urnmn  
/** 60"5?=D  
* @author treeroot Bk,2WtVX  
* @since 2006-2-2 r0>q%eM8  
* @version 1.0 N83!C=X'  
*/ NX?}{'f  
public class ShellSort implements SortUtil.Sort{ 5XDgs|8  
8tU>DJ}0  
/* (non-Javadoc) "tqnx?pM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HmvsYP66  
*/ R.K?  
public void sort(int[] data) { tKwn~T  
for(int i=data.length/2;i>2;i/=2){ & x`&03X  
for(int j=0;j insertSort(data,j,i); Di:{er(p  
} jz*0`9&_  
} d$w(-tV42  
insertSort(data,0,1); ~i% -WX  
} C1b*v&1{  
_ w/_(k  
/** Ua %UbAt  
* @param data .}o~VT:!?Y  
* @param j G\R*#4cF  
* @param i ^w.]Hd 2  
*/ 4Rx~s7l  
private void insertSort(int[] data, int start, int inc) { iC\%_5/ _  
int temp; alFNSRY  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); le.anJAr  
} vd`O aM}#U  
} PSPTL3_~  
} 6 Ew@L<v  
RT,:hH  
} eH %Ja[  
I!P4(3skAB  
快速排序: u^t$ cLIZ  
/hL\,x 2  
package org.rut.util.algorithm.support; F% `zs\  
E, GN|l  
import org.rut.util.algorithm.SortUtil; oB p3JX9_f  
Nb0Ik/:<  
/** vDsF-u1  
* @author treeroot C8ZL*9U  
* @since 2006-2-2 P1MvtI4gm  
* @version 1.0 =~&VdPZ  
*/ YxXq I  
public class QuickSort implements SortUtil.Sort{ Goxl3LS<  
oe9lF*$/  
/* (non-Javadoc) &:<, c12  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fN@{y+6  
*/ [ 7g><  
public void sort(int[] data) { \/ErPi=g  
quickSort(data,0,data.length-1); b]T@gJ4H=  
} YScvyh?E  
private void quickSort(int[] data,int i,int j){ eeM?]J-  
int pivotIndex=(i+j)/2; 8] `Ru5nd  
file://swap \Wr,<Y  
SortUtil.swap(data,pivotIndex,j); }9^@5!qX  
wjrG7*_Y4v  
int k=partition(data,i-1,j,data[j]); M%I@<~wl  
SortUtil.swap(data,k,j); Xw t`(h[u  
if((k-i)>1) quickSort(data,i,k-1); yI&9\fn  
if((j-k)>1) quickSort(data,k+1,j); >{wuEPA  
0 Qnd6mb  
} -U >y   
/** 7/aOsW"6  
* @param data ?F_)-  
* @param i H]&gW/=  
* @param j Or8kp/d  
* @return b5<okICD  
*/ 22&;jpL'?  
private int partition(int[] data, int l, int r,int pivot) { $5NKFJc  
do{ py @( <  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); RO.U(T  
SortUtil.swap(data,l,r); <F(><Xw,-4  
} ! \sMR  
while(l SortUtil.swap(data,l,r); 5!(?m~jJ  
return l; ^`XCT  
} p $Hi[upy  
| &7S8Q  
} ?2 f_aY ;  
'1Y\[T*  
改进后的快速排序: U\zD,<I9  
o:~LF6A-  
package org.rut.util.algorithm.support; bWmw3w  
eM2|c3/  
import org.rut.util.algorithm.SortUtil; 'RbQj}@x  
LHkQ'O0  
/** =^tA_AxVw  
* @author treeroot +.kfU)6@  
* @since 2006-2-2  U>a\j2I  
* @version 1.0 0 ipN8Pg+  
*/ Hr^3`@}#1  
public class ImprovedQuickSort implements SortUtil.Sort { hr/o<#OW  
r|eZv<6  
private static int MAX_STACK_SIZE=4096; @kxel`,$e  
private static int THRESHOLD=10; |gx ~ gG<  
/* (non-Javadoc) u5+|Su  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;j9\b9m  
*/ w!&~??&=}  
public void sort(int[] data) { x#*QfE/E(@  
int[] stack=new int[MAX_STACK_SIZE]; iOCqE 5d3  
9t$]X>}  
int top=-1; bm# (?  
int pivot; AXPMnbUS  
int pivotIndex,l,r; H,y4`p 0  
tU :EN;H  
stack[++top]=0; \+ 0k+B4a  
stack[++top]=data.length-1; R[jEvyD>(  
&%mXYj3y5  
while(top>0){ ?!'Zf Q:zK  
int j=stack[top--]; iM]o"qOQm  
int i=stack[top--]; !h`kX[:  
Ef)yQ  
pivotIndex=(i+j)/2; *F`A S>  
pivot=data[pivotIndex]; h@ )  
-LW[7s$  
SortUtil.swap(data,pivotIndex,j); Hy_;nN+e  
4vWkT8HQ  
file://partition =d)-Fd2li  
l=i-1; >V$ Gx>I  
r=j; ] )}]/Qw  
do{ <hx+wrv  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); t0)<$At6J  
SortUtil.swap(data,l,r); :j^FJ@2_  
} x@KZ ]  
while(l SortUtil.swap(data,l,r); i'#Gy,R  
SortUtil.swap(data,l,j); y3G `>  
bZ1 78>J]  
if((l-i)>THRESHOLD){ r] Lc9dL  
stack[++top]=i; ~Z'w)!h  
stack[++top]=l-1; #oni:]E!m  
} {Ui =b+  
if((j-l)>THRESHOLD){ T~:|!`  
stack[++top]=l+1; 4\M.6])_   
stack[++top]=j; O"G >wv  
} rXfy!rD_P_  
bm% $86  
} }"^'% C8EX  
file://new InsertSort().sort(data); 9DQa PA6  
insertSort(data); [7FItlF%I  
} %w7pkh,  
/** ACq7dLys,B  
* @param data p< "3&HA  
*/ L+}n@B  
private void insertSort(int[] data) { Iw<i@=V  
int temp; tptN6Isuh  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *%/~mSx  
} ^-z=`>SrS"  
} A:l@_*C..  
} H<EQu|f&x  
^ BQrbY  
} P [Uy  
^ vilgg~  
归并排序: ?>"Yr,b?  
d5 7i)=  
package org.rut.util.algorithm.support; &0zT I?c  
mZz="ZLa:  
import org.rut.util.algorithm.SortUtil; 4(Iplo*Ys@  
zOgTQs"ZH  
/** 03E4cYxt5  
* @author treeroot uvP2Wgt  
* @since 2006-2-2 YjOs}TD lx  
* @version 1.0 Rp7ntI:  
*/ rE9I>|tX  
public class MergeSort implements SortUtil.Sort{ G6@M&u5RT  
=L;] ;i  
/* (non-Javadoc) _BdE< !r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :+Om]#`Vls  
*/ :0 & X^]\  
public void sort(int[] data) { `K~AhlJUQ  
int[] temp=new int[data.length]; 2_vbT!_  
mergeSort(data,temp,0,data.length-1); \.YS%"Vz  
} )WT>@  
%1}K""/  
private void mergeSort(int[] data,int[] temp,int l,int r){ '52~$z#m  
int mid=(l+r)/2; w }Uhd ,  
if(l==r) return ; )9l^O  
mergeSort(data,temp,l,mid); !l]dR@e  
mergeSort(data,temp,mid+1,r); J:&[ 59  
for(int i=l;i<=r;i++){ WOuEWw=  
temp=data; AdRX`[ik  
} ^uv<6  
int i1=l; mKo C.J  
int i2=mid+1; [ i#zP  
for(int cur=l;cur<=r;cur++){ 4vBL6!z:Z  
if(i1==mid+1) ~ .;<  Bj  
data[cur]=temp[i2++]; ;JZS^Wa  
else if(i2>r) -46C!6a  
data[cur]=temp[i1++]; J+d1&Tw&  
else if(temp[i1] data[cur]=temp[i1++]; ok|qyN+  
else Z R/#V7Pj  
data[cur]=temp[i2++]; fd-q3 _f  
} OO[F E3F  
} z~`b\A,$  
}!IL]0 q  
} P(F+f `T  
|$5[(6T|  
改进后的归并排序: #9K-7je;j  
a7N!B'y  
package org.rut.util.algorithm.support; 3Zi@A4Wu  
RV@*c4KvO+  
import org.rut.util.algorithm.SortUtil; lz1 wO5%h  
"*G.EiLq  
/** -D6exTxh"  
* @author treeroot vWGwVH/K  
* @since 2006-2-2 4:gRr   
* @version 1.0 }.s~T#v  
*/ M|:UwqV>  
public class ImprovedMergeSort implements SortUtil.Sort { gz3pX#S  
{nLjY|*  
private static final int THRESHOLD = 10; Qxj JN^Q  
,}K<*t[I  
/* [jmd  
* (non-Javadoc) !.d@L6  
* 9k{PBAP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b0oMs=uBn  
*/ -[-wkC8a  
public void sort(int[] data) { RjN{%YkXe  
int[] temp=new int[data.length]; ..rOsg{  
mergeSort(data,temp,0,data.length-1); "~'b  
} n=[/Z!  
u*hSj)vr1  
private void mergeSort(int[] data, int[] temp, int l, int r) { Z?\>JM >;  
int i, j, k; !"Oh3 6  
int mid = (l + r) / 2; :0h_K  
if (l == r) IIbYfPiO  
return; h<$MyN4]g  
if ((mid - l) >= THRESHOLD) |P%Jw,}]9  
mergeSort(data, temp, l, mid); }sxYxn~  
else thhwN A  
insertSort(data, l, mid - l + 1); Dc,I7F|%  
if ((r - mid) > THRESHOLD) Hw4%uS==V  
mergeSort(data, temp, mid + 1, r); E~6c-Lw  
else vh$%9ed  
insertSort(data, mid + 1, r - mid); %f]:I  
<_7*67{  
for (i = l; i <= mid; i++) { P'_H/r/#  
temp = data; NX}<*b/  
} R6(oZph  
for (j = 1; j <= r - mid; j++) { 9g<7i  
temp[r - j + 1] = data[j + mid]; =zz ~kon9  
} T:; 2  
int a = temp[l]; ^0 -:G6H  
int b = temp[r]; :5{wf Am  
for (i = l, j = r, k = l; k <= r; k++) { DP|D\+YyYA  
if (a < b) { xoN3  
data[k] = temp[i++]; i*Z" Me  
a = temp; <*qnY7c&N;  
} else { #?S^kM-0  
data[k] = temp[j--]; 6ZP"p<xX  
b = temp[j]; Q637N|01  
} `G}TG(  
} (=om,g}  
} maNl^i  
3eF -8Z(f  
/** sc}~8T  
* @param data Sn|BlXrey  
* @param l X<I+&Zi  
* @param i X"fb;sGT  
*/ 5;YMqUkw  
private void insertSort(int[] data, int start, int len) { Ck) * &  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); s6@DGSJ  
} ATK_DE Au  
} 6}FP  
} C)`Fv=]R  
} 85LAY aw  
 z62;cv  
堆排序: j3{D^|0bP  
yjF1}SQ  
package org.rut.util.algorithm.support; 7Mg=b%IYs  
ci?qT,&  
import org.rut.util.algorithm.SortUtil; 0|{u{w@!`  
%yv<y+yP~  
/** ]d! UJ&<?  
* @author treeroot 5?]hd*8   
* @since 2006-2-2 ,Vt/(x-  
* @version 1.0 1ng!G 7g  
*/ ?j"KV_  
public class HeapSort implements SortUtil.Sort{ ?B2] -+Y  
Gz,i~XX  
/* (non-Javadoc) {?:X8&Sf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hl{S]]z  
*/ WE:24b6  
public void sort(int[] data) { 8Dj c c z  
MaxHeap h=new MaxHeap(); *%%g{ 3$  
h.init(data); VHIOwzC  
for(int i=0;i h.remove(); 0Ziw_S\d&s  
System.arraycopy(h.queue,1,data,0,data.length); P\1L7%*lU  
} ;V*l.gr'2  
a,k>Q`  
private static class MaxHeap{ i3 @)W4{  
~a ]+#D  
void init(int[] data){ x|pg"v&[  
this.queue=new int[data.length+1]; _({hc+9p  
for(int i=0;i queue[++size]=data; {xXsBh Y  
fixUp(size); >n'o*gZM  
} 1H6<[iHW  
} "@iK' c^  
:bwjJ}F  
private int size=0; pKpUXfQu  
X-K=!pET  
private int[] queue; w n/_}]T  
L~lxXTG\  
public int get() { >\KNM@'KI  
return queue[1]; u{['<r;I  
} UQ?XqgUM  
Ya3C#=  
public void remove() { (k5We!4[1  
SortUtil.swap(queue,1,size--); 0i!uUF  
fixDown(1); D1zBsi94D  
} p@xf^[50k  
file://fixdown _m5uDF?[  
private void fixDown(int k) { _Kl_61k  
int j; Oo5w?+t  
while ((j = k << 1) <= size) { %4et&zRC  
if (j < size %26amp;%26amp; queue[j] j++; J^SdH&%Z  
if (queue[k]>queue[j]) file://不用交换 a_f~N1kq  
break; cW@Zd5&0S  
SortUtil.swap(queue,j,k); +ElfZ4  
k = j; /Z'L^ L%R  
} K|zZS%?$  
} 6jE |  
private void fixUp(int k) { &Sw%<N*r  
while (k > 1) { u0|8Tgf  
int j = k >> 1; ?XrQ53  
if (queue[j]>queue[k]) I,>- tGK  
break; We$:&K0  
SortUtil.swap(queue,j,k); v$7QIl_/7  
k = j; $q6BP'7  
} 7K,-01-:  
} _x%7@ .TB  
y{ibO}s  
} uwzvbgup?  
[$0p+1  
} g!@<n1 L  
q rJ`1  
SortUtil: n.'8A(,r3  
O#:$^#j&  
package org.rut.util.algorithm; \F1_lq;K  
WIC/AL'  
import org.rut.util.algorithm.support.BubbleSort; k1w_[w [  
import org.rut.util.algorithm.support.HeapSort; 6& e3Nt  
import org.rut.util.algorithm.support.ImprovedMergeSort; i2E )P x  
import org.rut.util.algorithm.support.ImprovedQuickSort; ehzM) uK  
import org.rut.util.algorithm.support.InsertSort; "c3Grfoz  
import org.rut.util.algorithm.support.MergeSort; 0b+Wc43}K  
import org.rut.util.algorithm.support.QuickSort; Jj!vh{  
import org.rut.util.algorithm.support.SelectionSort; I4/8 _)b^  
import org.rut.util.algorithm.support.ShellSort; "6MVvpy"  
QdT}wkX  
/** z>58dA@f  
* @author treeroot N60rgSzI  
* @since 2006-2-2 @e(o129  
* @version 1.0 }Lc-7[/  
*/ nzd2zY>V  
public class SortUtil { Wk~W Ozr}^  
public final static int INSERT = 1; 0h#l JS*  
public final static int BUBBLE = 2; UK595n;P  
public final static int SELECTION = 3; _ "?.!  
public final static int SHELL = 4; %<k2#6K  
public final static int QUICK = 5; Gw>^[dmt!  
public final static int IMPROVED_QUICK = 6; FQu8 vwV6>  
public final static int MERGE = 7; )Xk0VDNp$/  
public final static int IMPROVED_MERGE = 8; t2/#&J]  
public final static int HEAP = 9; 6IBgt!=,  
Yw4n-0g  
public static void sort(int[] data) { $7O}S.x  
sort(data, IMPROVED_QUICK); fol,xMc&  
} tNO-e|~'  
private static String[] name={ HJLu'KY }  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" M2PAy! J  
}; `NCwK6/i  
 CJ1 7n  
private static Sort[] impl=new Sort[]{ f sJ9bQm/  
new InsertSort(), U{7w#>V .  
new BubbleSort(), ~HTmO;HNf"  
new SelectionSort(), xf<at->  
new ShellSort(), mw_~*Nc'9  
new QuickSort(), tjIl-IQ  
new ImprovedQuickSort(), a|%J=k>>  
new MergeSort(), 9>l*lCA  
new ImprovedMergeSort(), Ov 5"  
new HeapSort() w`4=_J=GO  
}; ^V?<K.F  
^8 zR  
public static String toString(int algorithm){ rf $QxJ  
return name[algorithm-1]; o)Iff)m$  
} $;1#To  
 3,p]/Z_  
public static void sort(int[] data, int algorithm) { +MR.>"  
impl[algorithm-1].sort(data); 8$")%_1]  
} 9!6f-K  
j/R[<47  
public static interface Sort { f[@77m*  
public void sort(int[] data); XG}C+;4Aw  
}  z_F-T=_  
kDEPs$^  
public static void swap(int[] data, int i, int j) { 5Sm}n H  
int temp = data;  a][f  
data = data[j]; G9Y#kBr  
data[j] = temp; .X@FXx&  
} )Ub_@)X3%l  
} kh {p%<r{  
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