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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。 k1,k 9BK  
插入排序: e]1=&:eX#d  
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package org.rut.util.algorithm.support; W|2^yO,dX  
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import org.rut.util.algorithm.SortUtil; _4>DuklH,  
/** ;"&?Okz  
* @author treeroot br=e+]C Y)  
* @since 2006-2-2 !sX$?P%U  
* @version 1.0 a[hF2/*  
*/ w9Yx2  
public class InsertSort implements SortUtil.Sort{ k*A(7qQA`4  
(GRW(Zd4  
/* (non-Javadoc) XEiVs\) G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ZRII<k5)  
*/ ()6% 1zCO  
public void sort(int[] data) { h.tj8O1  
int temp; tEL;,1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]L~z9)  
} }4>u_)nt  
} nC3+Zka  
} wwl,F=| Y  
u [qy1M0  
} x[t?hl=:  
"22./vWV|i  
冒泡排序: Gxd/t#;  
`&NFl'l1C  
package org.rut.util.algorithm.support; a >fA-@  
#m|el@)  
import org.rut.util.algorithm.SortUtil; 9,fV  
Mzg'$]N  
/** MNs<yQ9I'  
* @author treeroot ai;!Q%B#Q  
* @since 2006-2-2 l]|&j`'O  
* @version 1.0 6teu_FS  
*/ Q3>qT84  
public class BubbleSort implements SortUtil.Sort{ r^"o!,H9q  
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/* (non-Javadoc) aKMX-?%t4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mzg3i*  
*/ ^:?z7m  
public void sort(int[] data) { q2 7Ac; y  
int temp; W4 q9pHQ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _,^f,WO~  
if(data[j] SortUtil.swap(data,j,j-1); F-@y H  
} GYw/KT~$  
} u|23M,  
} c+{XP&g8_J  
} 6No.2Oo  
O#igH  
} 26~rEOgJ  
;s3@(OnjZ  
选择排序: R{}_Qb  
!& c%!*  
package org.rut.util.algorithm.support; PE7V1U#$o,  
'0 Ys`Qo  
import org.rut.util.algorithm.SortUtil; +]t9kr  
K/(LF}  
/** =O8YU)#  
* @author treeroot M(8xwo-W  
* @since 2006-2-2 4`~OxL  
* @version 1.0 gs2qLb  
*/ R@WW@ Of  
public class SelectionSort implements SortUtil.Sort { C|}yE ;*a  
'q9Ejig  
/* w+rw<,u%  
* (non-Javadoc) '_g&!zi8~  
* -6 v?iiZr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IF>v -Z  
*/ ? Zv5iI  
public void sort(int[] data) { &/EZn xl  
int temp; akw:3+`  
for (int i = 0; i < data.length; i++) { \yymp70w  
int lowIndex = i; %|@?)[;  
for (int j = data.length - 1; j > i; j--) { b c .Vy  
if (data[j] < data[lowIndex]) { CWs;1`aP  
lowIndex = j; yq3"VFh3d  
} 9^S rOW6~  
} W(ZEqH2  
SortUtil.swap(data,i,lowIndex); pnz@;+f  
} #O^zA`D   
} Wm8BhO  
3s BWtz  
} q&ed4{H<  
EHe-wC  
Shell排序: f].z.  
PmId #2f  
package org.rut.util.algorithm.support; ZbH6$2r  
D622:Y886  
import org.rut.util.algorithm.SortUtil; Zo-Au  
z"5e3w  
/** \i~5H]?d  
* @author treeroot K~L"A]+  
* @since 2006-2-2 E3Z>R=s  
* @version 1.0 7({.kD6  
*/ $o\U q  
public class ShellSort implements SortUtil.Sort{ ^<yM0'0t  
XSZjuQ<[3  
/* (non-Javadoc) @Ng q+uXm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [\HAJA,  
*/ nkkGJV!  
public void sort(int[] data) { suj}A  
for(int i=data.length/2;i>2;i/=2){ GmGq69]J*  
for(int j=0;j insertSort(data,j,i); n;b 9f|&z  
} 0g#?'sD  
} QqY42hR  
insertSort(data,0,1); 'U`I  
} [0+5 Gx  
h^9Ne/s~  
/** 8/34{2048  
* @param data nDC5/xB  
* @param j qmnCa&C9  
* @param i gvZLW!={  
*/ qfY=!|O  
private void insertSort(int[] data, int start, int inc) { ,@gDY9Q3r/  
int temp; .>zkS*oX4z  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4ri)%dl1  
} ;+qPV7Z  
} N~arxe (K  
} ,KibP_<%&P  
E{9{%J  
} YpZ 9h@,  
4d'tK^X  
快速排序: 6 ud<B  
EVmE{XlD;  
package org.rut.util.algorithm.support; ~w%Z Bp  
,v1-y ?kB  
import org.rut.util.algorithm.SortUtil; _jb"@TY  
VA'<  
/** RZE:WE;5  
* @author treeroot NU/~E"^I.  
* @since 2006-2-2 'E8dkVlI  
* @version 1.0 s?K4::@Fv  
*/ oB Bdk@  
public class QuickSort implements SortUtil.Sort{ 5p{tt;9[  
s: q15"  
/* (non-Javadoc) $t </{]iX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qXW2a'~  
*/ B 9]sSx  
public void sort(int[] data) { !r!Mq~X<=  
quickSort(data,0,data.length-1); 7!N5uR  
} uJp}9B60_  
private void quickSort(int[] data,int i,int j){ g9"_BG  
int pivotIndex=(i+j)/2; <F.Ol/'h  
file://swap 7#|NQ=yd  
SortUtil.swap(data,pivotIndex,j); Xhkw<XbV  
&akMj@4;R  
int k=partition(data,i-1,j,data[j]); 9'8oOBqm3%  
SortUtil.swap(data,k,j); f&cG;Y  
if((k-i)>1) quickSort(data,i,k-1); 3yD5u  
if((j-k)>1) quickSort(data,k+1,j); 2Nl("e^kJr  
yb**|[By  
} d`nS0Tf'  
/** $v oyXi`*  
* @param data +#H8d1^5  
* @param i izW l5}+'B  
* @param j 3S2'JOTY  
* @return |]\bgh  
*/ +[ }]a3)  
private int partition(int[] data, int l, int r,int pivot) { /~tfP  
do{ zB]T5]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;<X3AhF  
SortUtil.swap(data,l,r); '}YXpB  
} x?<5=,  
while(l SortUtil.swap(data,l,r); 2RXGY  
return l; Q6W)rJ[|  
} /tv;W  
80]TKf>  
} ];2eIe  
rqh,BkQ0t  
改进后的快速排序: QBn>@jq  
Yh%wf3 UEO  
package org.rut.util.algorithm.support; Tk2kis(n  
g4$%)0x%  
import org.rut.util.algorithm.SortUtil; Zz&i0 r  
&s;%(c04A  
/** mVL,J=2  
* @author treeroot < 5_Ys  
* @since 2006-2-2 CC-:dNb  
* @version 1.0 uN(~JPAw5  
*/ Po4cbFZ  
public class ImprovedQuickSort implements SortUtil.Sort { |8`;55G  
TgB;R5  
private static int MAX_STACK_SIZE=4096; r;T/  
private static int THRESHOLD=10; QF;<%QF:  
/* (non-Javadoc) v#+w<gRq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y-c~"#  
*/ )Z%+~n3o'  
public void sort(int[] data) { xA5$!Oq7  
int[] stack=new int[MAX_STACK_SIZE]; hCvn(f  
W=\dsdnu*  
int top=-1; _TXV{<E6  
int pivot; 4F4u1r+  
int pivotIndex,l,r; Y#Vy:x[  
.XB] X  
stack[++top]=0; rlIEch^wZ  
stack[++top]=data.length-1; t3>r f3v  
YPy))>Q>cK  
while(top>0){ G([vy#p  
int j=stack[top--]; E$>e< T  
int i=stack[top--]; {G0)mp,  
mfN@tMp  
pivotIndex=(i+j)/2; rWs5s!l,  
pivot=data[pivotIndex]; KJ)&(Yx  
N]<gHGj}  
SortUtil.swap(data,pivotIndex,j); XfrnM^oty  
'> Q$5R1  
file://partition U ^9oc&  
l=i-1; +=k|(8Js#  
r=j; l.W:6", w  
do{ oX4uRc7wR  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GKtQ>39B  
SortUtil.swap(data,l,r); ;2|H6IN"  
} /_a *C.a6  
while(l SortUtil.swap(data,l,r); L-R}O 8  
SortUtil.swap(data,l,j); .KsvRx  
FOA%( 5$4  
if((l-i)>THRESHOLD){ Fb' wC  
stack[++top]=i; u" g p">  
stack[++top]=l-1; dR+$7N$  
} *a%PA(%6  
if((j-l)>THRESHOLD){ ,s76]$%4  
stack[++top]=l+1; RHbp:Mlk  
stack[++top]=j; k9xKaJ %1  
} !v L :P2  
`@D4?8_  
} !gf3%!%  
file://new InsertSort().sort(data); =x'%zUgE  
insertSort(data); urB3  
} 9p4U\hx  
/** ex+AT;o  
* @param data 5Z,lWp2A  
*/ swFOh5z  
private void insertSort(int[] data) { ~`E4E  
int temp; B^?XE(.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #+PbcL  
} o {LFXNcg[  
} EvmmQ  
} 1W[(+TZ&s  
Q9>]@DrAx  
} Y%l3SB,5L  
~Wm}M  
归并排序: :a@z53X@M  
$SVGpEw  
package org.rut.util.algorithm.support; 2oG|l!C  
" G6j UTt  
import org.rut.util.algorithm.SortUtil; h,'+w  
@EZONKT  
/** l5ds`uR#  
* @author treeroot q*nz4QTOE  
* @since 2006-2-2 W@dY:N}  
* @version 1.0 uP2a\C,$  
*/ odf^W  
public class MergeSort implements SortUtil.Sort{ s*~o%emw  
DZ.trtK  
/* (non-Javadoc)  0QqzS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sg>0P*K@  
*/ !y~b;>887  
public void sort(int[] data) { QJM!Wx+  
int[] temp=new int[data.length]; 5qSZ>DZ  
mergeSort(data,temp,0,data.length-1); MjC%6%HI  
} k#*yhG,]'  
<SZO- -+lB  
private void mergeSort(int[] data,int[] temp,int l,int r){ XSjelA?  
int mid=(l+r)/2; 4"x;XVNM[  
if(l==r) return ; iBC>w+t14  
mergeSort(data,temp,l,mid); ( v:ek_  
mergeSort(data,temp,mid+1,r); !F#aodM1N  
for(int i=l;i<=r;i++){ b_Jq=Gk`  
temp=data; +|YZEC  
} HbfB[%  
int i1=l; a BH1J]_  
int i2=mid+1; S{T d/1}  
for(int cur=l;cur<=r;cur++){ g+)\ /n|  
if(i1==mid+1) yKEFne8^  
data[cur]=temp[i2++]; ,D2_Z]  
else if(i2>r) hyfnIb@~}  
data[cur]=temp[i1++]; PZRn6Tc  
else if(temp[i1] data[cur]=temp[i1++]; .{ a2z*o  
else *;E+9^:V  
data[cur]=temp[i2++]; \N , '+  
} 8Vhck-wF  
} }k0-?_Z=1  
+JS/Z5dl+}  
} >TnQ4^;v.  
kseJm+Hc  
改进后的归并排序: 0DVZRB  
 &Z!K]OSY  
package org.rut.util.algorithm.support; cievC,3*  
CN~NyJL H  
import org.rut.util.algorithm.SortUtil; PFy;qk  
e)dWa'2<  
/** D8AIV K]  
* @author treeroot tlLn  
* @since 2006-2-2 )z235}P  
* @version 1.0 *3`oU\r  
*/ DE\bYxJ  
public class ImprovedMergeSort implements SortUtil.Sort { bTQa'y`3  
g+ 1=5g  
private static final int THRESHOLD = 10; /:{_|P\  
D>b5Uwt  
/* <-B"|u  
* (non-Javadoc) 'Rd*X6dv  
* @@3,+7%1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <!}l~Ln15  
*/ a<wQzgxG  
public void sort(int[] data) { FEZ"\|I|  
int[] temp=new int[data.length]; 5YI/Ec  
mergeSort(data,temp,0,data.length-1); F0'A/T'ht  
} :@%-f:iDj  
Z<|_+7T  
private void mergeSort(int[] data, int[] temp, int l, int r) { Iei7!KLW  
int i, j, k; wEnuUC4j  
int mid = (l + r) / 2; {_XrZ(y/  
if (l == r) o;4e)tK  
return; BT#=Xh  
if ((mid - l) >= THRESHOLD) k3>ur>aW  
mergeSort(data, temp, l, mid); $W {yK+N  
else UcLNMn|  
insertSort(data, l, mid - l + 1); VMZ]n%XRXW  
if ((r - mid) > THRESHOLD) ]ZKt1@4AY  
mergeSort(data, temp, mid + 1, r); o47 f  
else g2{H^YUN$_  
insertSort(data, mid + 1, r - mid); }{wTlR.]  
p=_XMh`;  
for (i = l; i <= mid; i++) { Vx6? @R  
temp = data; fH e0W  
} yOUX E>-  
for (j = 1; j <= r - mid; j++) { (ND5CKCR^  
temp[r - j + 1] = data[j + mid]; r3H}*Wpf  
} ^/C $L8#  
int a = temp[l]; k'ZUBTRq!  
int b = temp[r]; Go\} A:|s  
for (i = l, j = r, k = l; k <= r; k++) { Z#F,y)YiO  
if (a < b) { of'ZNQ/  
data[k] = temp[i++]; !q$&JZY  
a = temp; jxnQG A  
} else { En,)}yI  
data[k] = temp[j--]; ^\[LrPq e  
b = temp[j]; }xf='lE  
} nRXSW&V"m  
} kUg+I_j6*  
} UGmuX:@y76  
?VZ11?u  
/** k)5_1y  
* @param data @UpC{M--Wr  
* @param l h-La'}>?  
* @param i O[(?.9  
*/ vNz;#Je  
private void insertSort(int[] data, int start, int len) { ,zN3? /7  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); OJ35En  
} d2A wvP  
} ^5;vx  
} )ew[ Ak|  
} HCJ8@nki  
dgco*TIGO  
堆排序: v;fJM5PA  
s ~Lfi.  
package org.rut.util.algorithm.support; :J Gl>V  
-OrY{^F  
import org.rut.util.algorithm.SortUtil; 0\cnc^Z  
1c)\  
/** %Ui{=920  
* @author treeroot %wt2F-u  
* @since 2006-2-2 i5 L:L  
* @version 1.0 Hz]4AS  
*/ !f\?c7  
public class HeapSort implements SortUtil.Sort{ Gpdv]SON{  
dNUR)X#e  
/* (non-Javadoc) vXy uEEe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &\1'1`N1  
*/ \-Iny=$  
public void sort(int[] data) { 0~+NB-L}  
MaxHeap h=new MaxHeap(); ~*7O(8  
h.init(data); Jt2,LL:G  
for(int i=0;i h.remove(); /lLov.  
System.arraycopy(h.queue,1,data,0,data.length); Vl{~@G,@  
} t{R5 EU  
c$Xe.:QY  
private static class MaxHeap{ "[jhaUAK  
6_R\l@a  
void init(int[] data){ _/,SZ-C#L4  
this.queue=new int[data.length+1]; v)@,:u)  
for(int i=0;i queue[++size]=data; oe(9mYWKa6  
fixUp(size); t1e4H=d>  
} 01LZE,.  
} %bIsrQ~B  
/~i.\^HX  
private int size=0; Gr5`1`8|  
ZjU=~)O}H  
private int[] queue; GA|/7[I}  
JsmbW|t^  
public int get() { ^uyNv-'F  
return queue[1]; bKk CW  
} [1z{T(dh  
brg":V1a  
public void remove() { j|VXC(6 P,  
SortUtil.swap(queue,1,size--); klgv{_b  
fixDown(1); n$.1Wk"  
} g!1I21M1~  
file://fixdown \f(Y:}9  
private void fixDown(int k) { C(-[ Y!  
int j; aGPqh,<QD  
while ((j = k << 1) <= size) { Q0V^PDF  
if (j < size %26amp;%26amp; queue[j] j++; YF}9k  
if (queue[k]>queue[j]) file://不用交换 8#+`9GI  
break; )K{o<m~WAo  
SortUtil.swap(queue,j,k); ;#3ekl{-g  
k = j; \s=QiPK  
} Bu7A{DRf  
} X_D6eYF  
private void fixUp(int k) { >9-Dd)<  
while (k > 1) { 0jBKCu  
int j = k >> 1; MWBXs7 5I  
if (queue[j]>queue[k]) W`#gpi)7N  
break; RK?jtb=&A  
SortUtil.swap(queue,j,k); xN6?yr  
k = j; It%T7 X#  
} o;3j:# 3 |  
} -NAmu97V}  
" Wp   
} <O;&qT*b  
}dy9I H  
} A?e,U,  
"?$L'!bM@  
SortUtil: A&N$tH  
!q!"UMiG  
package org.rut.util.algorithm; csYy7uzi  
r+o_t2_b*  
import org.rut.util.algorithm.support.BubbleSort; X*0k>j  
import org.rut.util.algorithm.support.HeapSort; ytEQ`  
import org.rut.util.algorithm.support.ImprovedMergeSort; Iq+2mQi*/k  
import org.rut.util.algorithm.support.ImprovedQuickSort; I?^aCnU  
import org.rut.util.algorithm.support.InsertSort; &a.']!$^"  
import org.rut.util.algorithm.support.MergeSort; M9gOoYf,~  
import org.rut.util.algorithm.support.QuickSort; +<&E3Or  
import org.rut.util.algorithm.support.SelectionSort; nt7|f,_J  
import org.rut.util.algorithm.support.ShellSort; ;:P7}v fz!  
>GgE,h  
/** bn$)f6%  
* @author treeroot ,ohmc\*J  
* @since 2006-2-2 ^D>fis  
* @version 1.0 ]*0(-@  
*/ 19'5Re&  
public class SortUtil { +6 ho)YL  
public final static int INSERT = 1; U<Vy>gIC  
public final static int BUBBLE = 2; X1Qr _o-BR  
public final static int SELECTION = 3; ThtMRB)9  
public final static int SHELL = 4; mIvnz{_d  
public final static int QUICK = 5; mxgqS=`  
public final static int IMPROVED_QUICK = 6; jDkm:X}:  
public final static int MERGE = 7; {t&*>ma6)  
public final static int IMPROVED_MERGE = 8; +@e }mL\8  
public final static int HEAP = 9;  012Lwd  
6;gLwOeOHY  
public static void sort(int[] data) { 1t.R+1[c  
sort(data, IMPROVED_QUICK); sa G8g  
} x.ba|:5  
private static String[] name={ &I%IaNco  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^;+[8:Kb  
}; K!p,x;YX  
R }1W  
private static Sort[] impl=new Sort[]{ . @@an;C  
new InsertSort(), $%Z3;:<Uf-  
new BubbleSort(), / $_M@>  
new SelectionSort(), tj[c#@[B  
new ShellSort(), }w#F6  
new QuickSort(), K U $`!h  
new ImprovedQuickSort(), /HZv  
new MergeSort(), RpYcD  
new ImprovedMergeSort(), T<P0T<  
new HeapSort() ]w!0u2K<Q\  
}; wqP2Gw7jh6  
> VP5vkv=  
public static String toString(int algorithm){ b:1 L@8s;  
return name[algorithm-1]; /[%w*v*'  
} aZ6'|S;  
<6/= y1QC)  
public static void sort(int[] data, int algorithm) { 0'`S,  
impl[algorithm-1].sort(data); 6lsEGe  
} `"c'z;  
`;$h'eI9  
public static interface Sort { ->h5T%sn  
public void sort(int[] data); h,t:]  
} QXs8:;T  
q6R Eh;$  
public static void swap(int[] data, int i, int j) { Cc Y7$D  
int temp = data; NO2(vE  
data = data[j]; Vc _:*  
data[j] = temp; 6Cv.5V hx  
} IB8gDP2  
} gqfDa cDJL  
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