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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。 w<B S  
插入排序: g}hUCx(  
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package org.rut.util.algorithm.support; Hpix:To  
,&,%B|gT]  
import org.rut.util.algorithm.SortUtil; 1R}9k)JQ  
/** n=-vOa%  
* @author treeroot 1< vJuF^  
* @since 2006-2-2 wxHd^b  
* @version 1.0 X.#*+k3s0  
*/ y7pBcyWTE=  
public class InsertSort implements SortUtil.Sort{ OFr"RGW"  
Q qF<HCO  
/* (non-Javadoc) sN1H{W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;cVK2'  
*/ igQzL*X  
public void sort(int[] data) { j(y<oxh  
int temp; yr},pB  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p^Ey6,!8]D  
} m u9,vH  
} @2"uJ6o  
} Ct `)R  
#v(As) 4^  
} DTC IVLV  
{qHQ_ _Bl  
冒泡排序: Zw)=Y.y!  
)vq}$W!:9  
package org.rut.util.algorithm.support; $@6q5Iz!&  
(72%au  
import org.rut.util.algorithm.SortUtil; U)'YR$2<  
Vb? wwx7=  
/** /HUT6B  
* @author treeroot q2xAx1R`sV  
* @since 2006-2-2 iY`[dsT  
* @version 1.0 #q:j~4)h  
*/ aO$0[-A  
public class BubbleSort implements SortUtil.Sort{ 7a_8007$l  
9%kO%j,3  
/* (non-Javadoc) 1CJ1-]S(3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lf9s'o}.R  
*/ jy~hLEt7  
public void sort(int[] data) { NCg("n,jx  
int temp; YN)qMI_ `A  
for(int i=0;i for(int j=data.length-1;j>i;j--){ >0SG]er@  
if(data[j] SortUtil.swap(data,j,j-1); |34k;l]E  
} )Jvo%Y  
} IgJG,!>h  
} fUvXb>f,  
} kDJYEI9j>  
JQ ?8yl  
} Pjq9BK9p  
*As"U99(  
选择排序: yx#!2Z0hw  
}{:Jj/d p  
package org.rut.util.algorithm.support; .Od@i$E>&  
b:9"nALgC  
import org.rut.util.algorithm.SortUtil; ?4%#myO3a  
d3a!s  
/** L"0dB.  
* @author treeroot KYkS ^v  
* @since 2006-2-2 rk %pA-P2  
* @version 1.0 !JdZ0l  
*/ 0Bgj.?l  
public class SelectionSort implements SortUtil.Sort { UHV"<9tk  
\gT({XU?  
/* q !}~c  
* (non-Javadoc) !gyW15z'  
* '~yxu$aK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z*VK{O)o  
*/ 6GAEQ]  
public void sort(int[] data) { @ebY_*  
int temp; N\s-{7K  
for (int i = 0; i < data.length; i++) { k_1;YO BF  
int lowIndex = i; BV<_1 WT}  
for (int j = data.length - 1; j > i; j--) { Foj|1zJS_  
if (data[j] < data[lowIndex]) { maSVqG  
lowIndex = j;  {y{O ze  
} b!-=L&V  
} mb_6f:Qh3  
SortUtil.swap(data,i,lowIndex); DIYR8l}x  
} \*5z0A9)5)  
} S^1ZsD.  
Z!q$d/1  
} .,VLQ btg  
\1?'JdN  
Shell排序: `+."X1  
Q-iBK*-w  
package org.rut.util.algorithm.support; @(6P L^I  
iqoMQ7%  
import org.rut.util.algorithm.SortUtil; v"Bm4+c&0  
gr!!pp;  
/** >BJBM |  
* @author treeroot wg k[_i  
* @since 2006-2-2 sc-+?i  
* @version 1.0 !F ?j'[s8]  
*/ r0f&n;0U4  
public class ShellSort implements SortUtil.Sort{ y'6lfThT  
|d\1xTBLp  
/* (non-Javadoc) 6[FXgCb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <D&  Ep  
*/ V~8]ag4  
public void sort(int[] data) { s{c|J#s  
for(int i=data.length/2;i>2;i/=2){ %IIFLlD  
for(int j=0;j insertSort(data,j,i); iig4JP'h  
} x*j eCD,  
} //3fgoly  
insertSort(data,0,1); `"V}Wq ?I  
} lwG)&qyVd  
rw 2i_,.*~  
/** d=\TC'd"{  
* @param data :rk6Stn$z  
* @param j 2.{zf r  
* @param i vytO8m%U  
*/  `uDOIl  
private void insertSort(int[] data, int start, int inc) { 5ld?N2<8/  
int temp; wU/fGg*M2  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `S3)uV]I  
} QX a2qxTc  
} zk@s#_3ct  
} =(R3-['QIb  
i$.!8AV6  
} <Pf4[q&wM  
L*rCUv`  
快速排序: D\-DsT.H  
nXuy&;5TL,  
package org.rut.util.algorithm.support; @d8Nr:  
2#qc YU  
import org.rut.util.algorithm.SortUtil; c<Ud[x.  
1JOoIC jB  
/** )2^r 0(x  
* @author treeroot j:8Pcx  
* @since 2006-2-2 k8+U0J_{'  
* @version 1.0 5|}u25J  
*/ +~==qLsU  
public class QuickSort implements SortUtil.Sort{ F *U.cJ%  
=pj3G?F#  
/* (non-Javadoc) zII^Ny8D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zt  
*/ ;S&anC#E  
public void sort(int[] data) { cl{mRt0  
quickSort(data,0,data.length-1); I !lR 7%  
} M`9|8f,!a  
private void quickSort(int[] data,int i,int j){ iTT7<x  
int pivotIndex=(i+j)/2; ym` 4v5w  
file://swap wSZMHIW  
SortUtil.swap(data,pivotIndex,j); 4UPxV"H  
RA){\~@wC  
int k=partition(data,i-1,j,data[j]); AYsHA w   
SortUtil.swap(data,k,j); j5smmtM`s  
if((k-i)>1) quickSort(data,i,k-1); Jh4pY#aF  
if((j-k)>1) quickSort(data,k+1,j); Gy6x.GX  
O"X7 DgbC  
} GUJ?6;  
/** WFmW[< g  
* @param data !4z vkJO  
* @param i 4kK_S.&  
* @param j zTq"kxn'  
* @return %5n'+-XVj  
*/  e?o/H  
private int partition(int[] data, int l, int r,int pivot) { p&2d&;Qo0  
do{ 8h=K S   
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); U9\w)D|+eE  
SortUtil.swap(data,l,r); D deKZ)8  
} <&((vrfa  
while(l SortUtil.swap(data,l,r); 3/c%4b.Z  
return l; ts,V+cEA  
} *k?y+}E_f  
Hh&qjf  
} Osy_C<O  
JPZH%#E(  
改进后的快速排序: ra@CouR^c{  
B oiS  
package org.rut.util.algorithm.support; CLuQ=-[|  
8RVRfy,w  
import org.rut.util.algorithm.SortUtil; #B!M,TWf9s  
5CfD/}{:#I  
/** U{@2kg-  
* @author treeroot iJKGzHvS  
* @since 2006-2-2 UQP>yuSx  
* @version 1.0 fL-$wK<p<  
*/ V he$vH  
public class ImprovedQuickSort implements SortUtil.Sort { ,sg\K> H=  
[4yw? U  
private static int MAX_STACK_SIZE=4096; @ W,<8  
private static int THRESHOLD=10; :/"5x  
/* (non-Javadoc) iMV=R2t 2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :N_DJ51  
*/ 7e#|Iq:o  
public void sort(int[] data) { (bB"6 #TI  
int[] stack=new int[MAX_STACK_SIZE]; e)XnS'  
iG=Di)O  
int top=-1; }{&;\^i  
int pivot; ,.|/B^jV  
int pivotIndex,l,r; Q/h-Kh mz  
U+[ "b-c  
stack[++top]=0; m !i`|]m  
stack[++top]=data.length-1; 6 =G=4{q  
0x^lHBYc  
while(top>0){ 5x,/p  
int j=stack[top--]; e:rbyzf#  
int i=stack[top--]; ]8'PLsS9<w  
t4hc X[  
pivotIndex=(i+j)/2; `9T5Dem|#  
pivot=data[pivotIndex]; ['K}p24,  
N9rAosO*  
SortUtil.swap(data,pivotIndex,j); V:+z3)qF  
80o'=E}"  
file://partition rP!GS _RG  
l=i-1;  5IF$M2j  
r=j; "-rqL  
do{ H_aG\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .2ZFJ.Z"  
SortUtil.swap(data,l,r); )dJx82" l  
} cVr+Wp7K#|  
while(l SortUtil.swap(data,l,r); G9GLRdP  
SortUtil.swap(data,l,j); <:8Ew  
YJ~mcaw  
if((l-i)>THRESHOLD){ Z B!~@Vf  
stack[++top]=i; U9 mK^  
stack[++top]=l-1; 0f'LXn  
} $>+g)  
if((j-l)>THRESHOLD){ kZi/2UA5Z  
stack[++top]=l+1; 6mgLeeY  
stack[++top]=j; *{\))Zmhd  
} (<e<Q~(  
MY}K.^ 4^  
} B`jq"[w]-  
file://new InsertSort().sort(data); 1i)3!fH0:  
insertSort(data); 2n-kJl`: O  
} h[<l2fy  
/** GY^;$?  
* @param data H4sc7-  
*/ 1<*U:W $g  
private void insertSort(int[] data) { H(y Gh  
int temp; q1ZZ T"'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ojA!!Ru  
} Ap4.c8f?Q-  
} $~%h4  
} )%lPKp4]  
S.<4t*,  
} wTG(U3{3K  
O}}rosA  
归并排序: /?Mr2!3N  
Y hC|hDC  
package org.rut.util.algorithm.support; Z a S29}  
K CH`=lX  
import org.rut.util.algorithm.SortUtil; f/iMI)J  
tE-g]y3  
/** 1xh7KBr,  
* @author treeroot Z/|=@gpw  
* @since 2006-2-2 :3b02}b7  
* @version 1.0 W,_2JqQp  
*/ <td]k%*+  
public class MergeSort implements SortUtil.Sort{ {esb"beGLa  
xH}bX-m  
/* (non-Javadoc) I`i"*z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t*u#4I1  
*/ :M<] 6o  
public void sort(int[] data) { [9#zE URS  
int[] temp=new int[data.length]; )OVa7[-T  
mergeSort(data,temp,0,data.length-1); GQQp(%T  
} 1EWZA  
A r>BL2@  
private void mergeSort(int[] data,int[] temp,int l,int r){ =q`T|9v  
int mid=(l+r)/2; Gzg3{fXl  
if(l==r) return ; .0~uM!3y  
mergeSort(data,temp,l,mid); i$<")q  
mergeSort(data,temp,mid+1,r); ou<,c?nNM  
for(int i=l;i<=r;i++){ Nd{U|k3pL  
temp=data; a;M{ -G  
} Fop +xR,Z  
int i1=l; yf4L0.  
int i2=mid+1; TY'61xWi  
for(int cur=l;cur<=r;cur++){ Chx+p&!  
if(i1==mid+1) 6<R[hIWpZ}  
data[cur]=temp[i2++]; 0z4M/WrNt  
else if(i2>r) ?,8+1"|$A]  
data[cur]=temp[i1++]; ju .pQ=PSX  
else if(temp[i1] data[cur]=temp[i1++]; rPqM&&+  
else a(D=ZKbVU  
data[cur]=temp[i2++]; JY^i  
} Dg{d^>T!_x  
} =9,^Tu|  
FouN}X6  
} het<#3Bo  
N-Z=p)]  
改进后的归并排序: %\n|2*r  
f fBd  
package org.rut.util.algorithm.support; AQT_s9"0  
`(=Kp=b  
import org.rut.util.algorithm.SortUtil; 7mMMVz2  
cO 5zg<wF  
/** =6"5kz10  
* @author treeroot {<Gp5j  
* @since 2006-2-2 X J)Y-7c  
* @version 1.0 o0|Ex\  
*/ pe\Nwq  
public class ImprovedMergeSort implements SortUtil.Sort { V/kndV[j  
={V@Y-5T  
private static final int THRESHOLD = 10; Pnm$g; `P  
1?1Bz?EKF*  
/* SY%y*6[6  
* (non-Javadoc) 0y?;o*&U\  
* -B&(& R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gZ7R^] k  
*/ UxzF5V5  
public void sort(int[] data) { W I MBw mg  
int[] temp=new int[data.length]; bv b \G  
mergeSort(data,temp,0,data.length-1); 8&| o  
} G9yK/g&q  
Y0A(- "  
private void mergeSort(int[] data, int[] temp, int l, int r) { ;FRUB@:  
int i, j, k; _vDmiIn6K  
int mid = (l + r) / 2; .kn2M&P>=  
if (l == r) a#;;0R $  
return; |5O>7~Tp  
if ((mid - l) >= THRESHOLD) $~W5! m  
mergeSort(data, temp, l, mid); &} `a"tYr  
else =!xX{o?64  
insertSort(data, l, mid - l + 1); q CYu@Ho  
if ((r - mid) > THRESHOLD) wWiYxBeN  
mergeSort(data, temp, mid + 1, r); Q}KOb4D  
else $?bD55  
insertSort(data, mid + 1, r - mid); L \E>5G;  
&tvp)B?cWk  
for (i = l; i <= mid; i++) { l &'q+F  
temp = data; q!@!eC[b  
} 4gsQ:3  
for (j = 1; j <= r - mid; j++) { 7bihP@I !  
temp[r - j + 1] = data[j + mid]; ZDgT"53   
} ^-[ I;P  
int a = temp[l]; =CZRX' +yN  
int b = temp[r]; qqf*g=f  
for (i = l, j = r, k = l; k <= r; k++) { wCruj`$  
if (a < b) { Zis,%XY  
data[k] = temp[i++]; %xOxMK@  
a = temp; |%v:>XEO  
} else { G 2)F<Y  
data[k] = temp[j--]; }X^MB  
b = temp[j]; VN!nef  
} FpA t  
} c {%mi  
} -OlrA{=c_  
10 *Tk 8  
/** XGH:'^o_  
* @param data Kw" y#Ys]  
* @param l #X?[")R  
* @param i jYRSV7d  
*/ nW7: ]  
private void insertSort(int[] data, int start, int len) { bS r"k  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); j9h fW'  
} =2Yt[8';  
} YZ4`b-  
} KGg S"d  
} "g&f:[a/  
H~:oW~Ah  
堆排序: -ZZJk-::  
?{J1Uw<  
package org.rut.util.algorithm.support; 3zD#V3 =  
^Z?m)qxvB  
import org.rut.util.algorithm.SortUtil; C|TQf8  
>Wt@O\k  
/** 9$ ;5J  
* @author treeroot 4=Ru{ewRV  
* @since 2006-2-2 "5~?`5Ff  
* @version 1.0 XxS#~J?:_  
*/ &zX  W  
public class HeapSort implements SortUtil.Sort{ H/x0'  
x"e;T,c  
/* (non-Javadoc) ION o&~-l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vjx'yh|  
*/ 8VMA~7^  
public void sort(int[] data) { \]]K{DO  
MaxHeap h=new MaxHeap(); B=& [Z2  
h.init(data); @tm2Y%Y!  
for(int i=0;i h.remove(); 7cGOJA5&  
System.arraycopy(h.queue,1,data,0,data.length); Qr$ 7 U6p  
} 1bCE~,tD  
!6=;dX  
private static class MaxHeap{ &|GH@^)@  
DX>LB$dy?  
void init(int[] data){ S W%>8  
this.queue=new int[data.length+1]; bXF8V  
for(int i=0;i queue[++size]=data; c-XO}\?  
fixUp(size); >jhcSvM6  
} mnK<5KLg1  
} JR.)CzC  
-(:T&rfTp  
private int size=0; v.Bwg 7R3  
A&t8C8,  
private int[] queue; `+n#CWZ"Y  
Yu_*P-Ja6  
public int get() { J4::.r  
return queue[1]; y,x 2f%x  
} MLHCBRi  
8p%0d`sX  
public void remove() { K $- *  
SortUtil.swap(queue,1,size--); IeYNTk &<  
fixDown(1); e&VC }%m  
} zl :by?  
file://fixdown 6LCtWX  
private void fixDown(int k) { p7Wt(A  
int j; }vZf&ib-   
while ((j = k << 1) <= size) { -J+1V{  
if (j < size %26amp;%26amp; queue[j] j++; ~iH a^i?2*  
if (queue[k]>queue[j]) file://不用交换 :a;F3NJ  
break; it\$Pih]  
SortUtil.swap(queue,j,k); O~V^]   
k = j; q< q IT  
} KMIe%2:b5  
} >=;-:  
private void fixUp(int k) { g:Qq%'  
while (k > 1) { ) ~=pt&+  
int j = k >> 1; B1 }-   
if (queue[j]>queue[k]) \{ EVRRXn  
break; gPk,nB  
SortUtil.swap(queue,j,k); mc?IM(t  
k = j; -#f.}H'  
} TF :'6#p  
} hb3:,c(  
7wx=#  
} G|Et'k.F4  
u.X]K:Yow  
} [E a{);  
u>lt}0  
SortUtil: g ,JfT^  
.4%z$(+6  
package org.rut.util.algorithm; 3(V0,L'1  
qo3+=*"V  
import org.rut.util.algorithm.support.BubbleSort; _{k*JT2  
import org.rut.util.algorithm.support.HeapSort; >B0AJW/u  
import org.rut.util.algorithm.support.ImprovedMergeSort; P".}Y[GD  
import org.rut.util.algorithm.support.ImprovedQuickSort; vK)'3%  
import org.rut.util.algorithm.support.InsertSort; Zo&i0%S\E  
import org.rut.util.algorithm.support.MergeSort; yk?bz  
import org.rut.util.algorithm.support.QuickSort; R %RbC!P  
import org.rut.util.algorithm.support.SelectionSort; >JE+j=  
import org.rut.util.algorithm.support.ShellSort; n/1t UF  
ik(YJw'i7E  
/** N E9,kWI  
* @author treeroot qK.(w Fx  
* @since 2006-2-2 68u?}8}  
* @version 1.0 ux TgK'3  
*/ <7 U~0@<Y  
public class SortUtil { b&[".ibN1  
public final static int INSERT = 1; &!/>B .  
public final static int BUBBLE = 2; Li5&^RAo|J  
public final static int SELECTION = 3; .|[{$&B  
public final static int SHELL = 4; YgcW1}  
public final static int QUICK = 5; eWAD;x?.  
public final static int IMPROVED_QUICK = 6;  `qs,V  
public final static int MERGE = 7; ^>l <)$s  
public final static int IMPROVED_MERGE = 8; -8qCCV&1i  
public final static int HEAP = 9; jI\@<6O  
_ZhQY,  
public static void sort(int[] data) { 5]Rbzg2t  
sort(data, IMPROVED_QUICK); 8S8qj"s  
} gvT}UNqL  
private static String[] name={ f9u=h}  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *zPqXtw!j  
}; o664b$5nsI  
:%sBY0 yF  
private static Sort[] impl=new Sort[]{ h}SZ+G/L  
new InsertSort(), jXA/G%:[  
new BubbleSort(), uluAqDz`  
new SelectionSort(), I^k&v V  
new ShellSort(), @)h>vg  
new QuickSort(), 06Wqfzceb  
new ImprovedQuickSort(), $4g {4-)  
new MergeSort(), o^2MfFS  
new ImprovedMergeSort(), ZXb|3|D  
new HeapSort() F0_w9"3E~  
}; fU|v[  
.S|7$_9;b  
public static String toString(int algorithm){ sn:VMHrOT  
return name[algorithm-1]; M99ku'  
} 6m?<"y8]  
XF(D%ygeC  
public static void sort(int[] data, int algorithm) {  =Iop  
impl[algorithm-1].sort(data); |-V:#1wR.]  
} &233QRYM  
(y]Z*p:EW  
public static interface Sort { L@H^?1*L?  
public void sort(int[] data); jaEe$2F2  
} bI ;I<Qa  
MBt\"b#t  
public static void swap(int[] data, int i, int j) { &'fER-  
int temp = data; pSlc (M>  
data = data[j]; Y_[7q<L  
data[j] = temp; `r SOt *<  
} yq ;[1O_9C  
} 1=J& ^O{W  
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