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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。 P EbB0GL  
插入排序: A]n !d}?  
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package org.rut.util.algorithm.support; Vxw?"mhP  
*Lufz-[1  
import org.rut.util.algorithm.SortUtil; `t8e2?GH  
/** >DV0!'jW  
* @author treeroot aTPpE9Pa&  
* @since 2006-2-2 @ce4sSo  
* @version 1.0 0W>O,%z&P#  
*/ ?+TD2~rD(  
public class InsertSort implements SortUtil.Sort{ u&g} !Smc8  
Onk~1ks:  
/* (non-Javadoc) H)4Rs~;{'g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ``O\'{o&  
*/ 3 $RII -}>  
public void sort(int[] data) { J=Jw"? f  
int temp; Y>z(F\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ) ejvT-  
} n_w,Ew,>5  
} 7'<4'BGzl]  
} [s2%t"H-y  
'-*r&:  
} co*5NM^  
5 Fd]3  
冒泡排序: k%LE"Q  
?r@ZTuq#  
package org.rut.util.algorithm.support;  %k2zsM  
X~R qv5@-  
import org.rut.util.algorithm.SortUtil; 0!?f9kJq  
rDSt ~ l  
/** 0xjV*0?s  
* @author treeroot 5 )C~L]  
* @since 2006-2-2 TS%cTh'ItH  
* @version 1.0 hgh1G7A&  
*/ >,9t<p=Q  
public class BubbleSort implements SortUtil.Sort{ 5G2u(hx  
`C=p7 %  
/* (non-Javadoc) m+!%+S1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J^?O] |  
*/ 8cd,SQ}y  
public void sort(int[] data) { BpK P]V  
int temp; 7>4t{aRf_8  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ](W #Tj5-  
if(data[j] SortUtil.swap(data,j,j-1); Xau.4&\d  
} ;3-ssF}k*  
} TLkkB09fvk  
} LZ@^ A]U  
} }^iE|YKz  
x,V_P/?%  
} tF;aB*  
im?nR+t+X  
选择排序: g)"6|Z?D"  
 ,cB`j7p(  
package org.rut.util.algorithm.support; D2hvf ^g'*  
M,[ClQ 9  
import org.rut.util.algorithm.SortUtil; R0+m7mx#E  
!7w-?1?D  
/** H11Wb(6Wu  
* @author treeroot !K@y B)9  
* @since 2006-2-2 ^8\pJg_0  
* @version 1.0 Obd!  
*/ `W/6xm(X5;  
public class SelectionSort implements SortUtil.Sort { wgufk {:  
_%>.t  
/* R@EFG%|`_  
* (non-Javadoc) 6 tzn% ?  
* NN$`n*;l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dxd}:L~z  
*/ y3xP~]n  
public void sort(int[] data) { xq]&XlA:ug  
int temp; A/.cNen  
for (int i = 0; i < data.length; i++) { j9,X.?Xvx  
int lowIndex = i; Zaj<*?\  
for (int j = data.length - 1; j > i; j--) { :Rq D0>1  
if (data[j] < data[lowIndex]) { *[jaI-~S  
lowIndex = j; m]%cNxS  
} |[V(u  
} =];FojC6I  
SortUtil.swap(data,i,lowIndex); (Hs frc  
} .!`j3W]  
} ,rN7X<s54  
NfSe(rd  
} NT nn!k  
Wl,yznT  
Shell排序: Xu T|vh  
a( qw  
package org.rut.util.algorithm.support; hIw*dob  
BU)4g[4  
import org.rut.util.algorithm.SortUtil; HgMDw/D(  
VP"L _Um  
/** $51#xe  
* @author treeroot ^=@%@mR/[C  
* @since 2006-2-2 EUNG&U  
* @version 1.0 9f V57  
*/ m:H )b{  
public class ShellSort implements SortUtil.Sort{ (2{1m#o  
>!wwXhH(  
/* (non-Javadoc) N$3F4b%+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [m"X*Z F  
*/ ) HmpVH  
public void sort(int[] data) { }skXh_Vu4  
for(int i=data.length/2;i>2;i/=2){ leiza?[  
for(int j=0;j insertSort(data,j,i); ~p8!Kb6  
} O 8fh'6  
} B>'\g O\2  
insertSort(data,0,1); C2VZE~U+  
} i ^W\YLE  
.d*vfE$  
/** 2{qoWys8[  
* @param data _7;#0B  
* @param j ru U|  
* @param i oi!E v_h  
*/ 1]qhQd-u  
private void insertSort(int[] data, int start, int inc) { C{,nDa?|  
int temp; =EG[_i{r  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); CR _A{(  
} d2(n3Xf  
} 2 o.Mh/D0  
} *L!R4;ubE  
J0x)m2  
} L h0<A%  
r9QNE>UG  
快速排序: nqV7Db~  
's9)\LS>p  
package org.rut.util.algorithm.support; sPhh#VCw{  
+F@9AO>LF  
import org.rut.util.algorithm.SortUtil; $DQMN  
?iq:Gf  
/** Coyop#q#"{  
* @author treeroot ZA# jw 8F  
* @since 2006-2-2  R` N-^x  
* @version 1.0 18`?t_8g  
*/ #\"5:.H Oz  
public class QuickSort implements SortUtil.Sort{ mjw:Z,  
`fL$t0 "  
/* (non-Javadoc) Ms$kL'/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YlYTH_L>E  
*/ 2#rF/!`^  
public void sort(int[] data) { +Oxl1fDf  
quickSort(data,0,data.length-1); P3:hGmk8|j  
} 1p tPey  
private void quickSort(int[] data,int i,int j){ 7y60-6r  
int pivotIndex=(i+j)/2; F Pu,sz8  
file://swap 9SU;c l  
SortUtil.swap(data,pivotIndex,j); r..Rh9v/=E  
;MO %))  
int k=partition(data,i-1,j,data[j]); i JQS@2=A  
SortUtil.swap(data,k,j); :0]KIybt  
if((k-i)>1) quickSort(data,i,k-1); vm Hf$rq  
if((j-k)>1) quickSort(data,k+1,j); Dl7#h,GTc<  
JU~l  
} {% ;tN`{M  
/** {?t=*l\S{w  
* @param data V43 |Ej}E  
* @param i u6D>^qF}@'  
* @param j gXF.e.uU  
* @return 1|Fukx<@J<  
*/ (llg!1  
private int partition(int[] data, int l, int r,int pivot) { H*!E*_  
do{ 3vMfms  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `?La  
SortUtil.swap(data,l,r); pV1~REk$&  
} ;8ugI  
while(l SortUtil.swap(data,l,r); M,7v}[Tbl  
return l; v_b%2;<1  
} OpiN,>;  
**oN/5  
} `i<U;?=0'  
<Nkj)`%5iK  
改进后的快速排序: T[c ;},  
eO*FoN  
package org.rut.util.algorithm.support; Xo'_|-N+  
0(64}T)  
import org.rut.util.algorithm.SortUtil; QV"  |  
p6sXftk  
/** k3u3X~u  
* @author treeroot /9i2@#J}W1  
* @since 2006-2-2 38rC; 6  
* @version 1.0 teET nz_L  
*/ N 0`)WLW  
public class ImprovedQuickSort implements SortUtil.Sort { 2'N%KKmJL  
B1\}'g8%f  
private static int MAX_STACK_SIZE=4096; Yz[^?M%(D  
private static int THRESHOLD=10; IY+P Yad  
/* (non-Javadoc) +$ P0&YaQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n)[{nkS6[  
*/ )f,iey\-  
public void sort(int[] data) { }+,;wj~  
int[] stack=new int[MAX_STACK_SIZE]; 0>>tdd7  
O$KLQ'0"n  
int top=-1; t}]=5)9<  
int pivot; '(~+ \  
int pivotIndex,l,r; EQMn'>  
%[5hTf  
stack[++top]=0; s<aJ pi{n4  
stack[++top]=data.length-1; $(G.P!/  
}ob#LC,  
while(top>0){ EW|bs#l  
int j=stack[top--]; QYDSE  
int i=stack[top--]; fyh9U_M);w  
l(*`,-pv:  
pivotIndex=(i+j)/2; 6"z:s-V  
pivot=data[pivotIndex]; &h')snp:#  
>q "mI6F  
SortUtil.swap(data,pivotIndex,j); IrM Ws86;  
3u _[=a  
file://partition /0@'8f\I  
l=i-1; 0]fzjiaGt  
r=j; KP%A0   
do{ ~CQsv `  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /n&w|b%  
SortUtil.swap(data,l,r); G D$o |l]\  
} up#W"`"  
while(l SortUtil.swap(data,l,r); zXIVHC,"{  
SortUtil.swap(data,l,j); VPet1hAy  
~4<xTP\*  
if((l-i)>THRESHOLD){ >2tYw,m  
stack[++top]=i; !T!U@e=u  
stack[++top]=l-1; xhWWl(r`5  
} u%}zLwMH  
if((j-l)>THRESHOLD){ srLXwoN[  
stack[++top]=l+1; F8S% \i  
stack[++top]=j; +co VE^/w  
} -X3yCK?re  
`$Z:j;F  
} C%vR!Az  
file://new InsertSort().sort(data); f,9/Yg_  
insertSort(data); jZx.MBVy]  
} *?:V)!.2z  
/** W9+H /T7!  
* @param data >^=up f/  
*/ 'pa[z5{k+  
private void insertSort(int[] data) { ;p)RMRMg  
int temp; 3MH9%*w'0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Zi/ tax9C  
} u $O` \=  
} oSq?. *w<  
} ark~#<SqAr  
#rD0`[pz  
} clV3x` z  
db -h=L|  
归并排序: W US[hx,  
H|JPqBNRh  
package org.rut.util.algorithm.support; TF R8  
G)t_;iNL|  
import org.rut.util.algorithm.SortUtil; i&=I5$  
'"qTmo!  
/** mSdByT+dG  
* @author treeroot :#7"SEud}  
* @since 2006-2-2 C9OEB6  
* @version 1.0 e ?sMOBPlv  
*/ Y7vUdCj  
public class MergeSort implements SortUtil.Sort{ MVP|l_2!  
jlXzfD T  
/* (non-Javadoc) v#c'p^T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZRHK?wg'#  
*/ & 6 wD  
public void sort(int[] data) { W T~UEK'  
int[] temp=new int[data.length]; 79`OB##  
mergeSort(data,temp,0,data.length-1); 1 etl:gcEC  
} PDQEI55  
XB0G7o%1  
private void mergeSort(int[] data,int[] temp,int l,int r){ sE:~+C6o:  
int mid=(l+r)/2; QP>tu1B|  
if(l==r) return ; IyK^` y  
mergeSort(data,temp,l,mid); 6Ft?9 B(F:  
mergeSort(data,temp,mid+1,r); 8z1#Q#5  
for(int i=l;i<=r;i++){ KTtB!4by  
temp=data; 8L1 vt Yz  
} AS5' j  
int i1=l; X} {z7[  
int i2=mid+1; Z mVw5G q  
for(int cur=l;cur<=r;cur++){ ``mnk>/  
if(i1==mid+1) /]pJ(FFC  
data[cur]=temp[i2++]; hQ7-m.UZw  
else if(i2>r) 4*Uzomb?q  
data[cur]=temp[i1++]; 4|U$ON?x  
else if(temp[i1] data[cur]=temp[i1++]; O"^3,-  
else  R.x^  
data[cur]=temp[i2++]; vG'6?%38  
} )+7|_7 !x  
} nwS @r  
^#( B4l!  
} L!;"73,&(8  
r+:]lO  
改进后的归并排序: 05>mRqVL  
c~``)N  
package org.rut.util.algorithm.support; f4 k  
'Dn\.x^]1  
import org.rut.util.algorithm.SortUtil; amTeT o]Tg  
ml,FBBGq|-  
/** u}r>?/V!  
* @author treeroot ]y0bgKTK  
* @since 2006-2-2 #)r^ZA&E  
* @version 1.0 Q HU|aC{r  
*/ |VX )S!  
public class ImprovedMergeSort implements SortUtil.Sort { u*}ltR~/  
atiyQuT6Wh  
private static final int THRESHOLD = 10; \qf0=CPw8  
kz_gR;"(Z  
/* _"%hcCMw  
* (non-Javadoc) ThvgYv--B  
* _sqj~|K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0 i'bo*  
*/ @vZeye  
public void sort(int[] data) { q\pI&B  
int[] temp=new int[data.length]; <uYrYqN  
mergeSort(data,temp,0,data.length-1); 4%B0H>  
} ObPXVqG"?  
%g_ )_ ~  
private void mergeSort(int[] data, int[] temp, int l, int r) { `.z"Q%uz  
int i, j, k;  \OJam<hZ  
int mid = (l + r) / 2; CZ 33|w  
if (l == r) "hmLe(jo}  
return; '@/1e\-y  
if ((mid - l) >= THRESHOLD) K<rv|bJ  
mergeSort(data, temp, l, mid); ;A6%YY  
else $-)T  
insertSort(data, l, mid - l + 1); @ D,]v:  
if ((r - mid) > THRESHOLD) Q&#Arph0e  
mergeSort(data, temp, mid + 1, r); % }IrZrh  
else KS'n$  
insertSort(data, mid + 1, r - mid); ;FGS(.mjlC  
c>Tf@A og>  
for (i = l; i <= mid; i++) { de/oK c  
temp = data; DaS~bweMw  
} mv,5Q6!  
for (j = 1; j <= r - mid; j++) { 29AE B  
temp[r - j + 1] = data[j + mid]; C547})  
} t zShds  
int a = temp[l]; R-Ys<;  
int b = temp[r]; Q7.jSL6  
for (i = l, j = r, k = l; k <= r; k++) { 2YDD`:R  
if (a < b) { }_Ci3|G>%D  
data[k] = temp[i++]; a<0q%A x  
a = temp; (|\%)v H-  
} else { C$0rl74Wi  
data[k] = temp[j--]; 2qdc$I&$  
b = temp[j]; 0q28Ulv9  
} *sQ.y {  
} &MZ{B/;;H  
} bf=!\L$  
Y\Z6u)  
/** U!{~L$S  
* @param data kQ]4Bo  
* @param l |:.s6a#(  
* @param i 6B|OKwL  
*/ !gJTKQX4  
private void insertSort(int[] data, int start, int len) { K?nQsT;3p  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);  Q'ZZQ  
} znB+RiV8  
} ?)ct@,Ek$  
} .i {yW  
} 2TG2<wqvE  
OMW]9E  
堆排序: 2$o#b .  
&q&~&j'[  
package org.rut.util.algorithm.support; .]H/u "d  
%+ nM4)h  
import org.rut.util.algorithm.SortUtil; M]|]b-#  
Y<IuwS  
/** Ee_?aG e&  
* @author treeroot a@Vk(3Rx_  
* @since 2006-2-2 vz(=3C[  
* @version 1.0 g(auB/0s  
*/ 'qUM38s  
public class HeapSort implements SortUtil.Sort{ 9M^5<8:  
@~Ys*]4UE  
/* (non-Javadoc) LF `]=.Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \K9.]PfbI  
*/ NT2XG& $W>  
public void sort(int[] data) { kh@O_Q`j  
MaxHeap h=new MaxHeap(); s2( 7z9jR  
h.init(data); ALn_ifNh  
for(int i=0;i h.remove(); n=)LB& m  
System.arraycopy(h.queue,1,data,0,data.length); _M&n~ r  
} M@l|n  
dDSb1TM  
private static class MaxHeap{ k( Ik+=u  
h oO847  
void init(int[] data){ *o5[P\'6  
this.queue=new int[data.length+1]; QW'*^^  
for(int i=0;i queue[++size]=data; $}IG+ ,L  
fixUp(size); 2 FoLJ  
}  _X  
} .Tm.M7  
\03<dUA6  
private int size=0; }Ml BmD  
\[qxOZ{  
private int[] queue; %y\5L#T!>  
uF|Up]Z G  
public int get() { AFM+`{Cq  
return queue[1]; CzY18-L@EX  
} !VaC=I^{  
}z#M!~  
public void remove() { @-L\c>rqT  
SortUtil.swap(queue,1,size--); q sUBvq  
fixDown(1); :{^~&jgL  
} c#CV5J\Kk3  
file://fixdown k]C k%[d  
private void fixDown(int k) { KgbBa2@ +  
int j; R>Dr1fc}  
while ((j = k << 1) <= size) { ).`v&-cK4E  
if (j < size %26amp;%26amp; queue[j] j++; .%dGSDru  
if (queue[k]>queue[j]) file://不用交换  Lagk   
break; Pr>05lg  
SortUtil.swap(queue,j,k); 5Ok3y|cEx  
k = j; x4PzP  
} ]%I\FefT  
} #?+[|RS|  
private void fixUp(int k) { FZ}^)u}o  
while (k > 1) { N34-z|"q  
int j = k >> 1; 4DDBf j  
if (queue[j]>queue[k]) u  Fw1%  
break; XZ{rKf2  
SortUtil.swap(queue,j,k); ev0>j4Q  
k = j; ~(^pGL3<  
} WUjRnzVM  
} }Xk_ xQVt{  
[E%g3>/mt  
} l*]hUPJ  
_;0RW  
} CS(XN>N  
+}1zw<  
SortUtil: mI{Fs|9h  
JWaWOk(t=?  
package org.rut.util.algorithm; l53Q"ajG  
Ywv\9KL  
import org.rut.util.algorithm.support.BubbleSort; $j(d`@.DN~  
import org.rut.util.algorithm.support.HeapSort; hr&&b3W3p  
import org.rut.util.algorithm.support.ImprovedMergeSort;  DAiS|x  
import org.rut.util.algorithm.support.ImprovedQuickSort; <,0/BMz  
import org.rut.util.algorithm.support.InsertSort; jjQDw=6  
import org.rut.util.algorithm.support.MergeSort; q9p31b3  
import org.rut.util.algorithm.support.QuickSort; TBrw ir  
import org.rut.util.algorithm.support.SelectionSort; oK-d58 sM  
import org.rut.util.algorithm.support.ShellSort; u{va2n/  
bM5V=b_H  
/** nS h~ mP  
* @author treeroot J_7@d]0R  
* @since 2006-2-2 K!qOO  
* @version 1.0 ]" e'z  
*/ KQb&7k .  
public class SortUtil { MRXw)NAw  
public final static int INSERT = 1; >q&5Z   
public final static int BUBBLE = 2; T iL.py,  
public final static int SELECTION = 3; d (x'\4(K  
public final static int SHELL = 4; 3uxf n=E  
public final static int QUICK = 5; %FM26^  
public final static int IMPROVED_QUICK = 6; ab2Cn|F  
public final static int MERGE = 7; -BI!ZsC'  
public final static int IMPROVED_MERGE = 8; $Zo|t a^  
public final static int HEAP = 9; ;]0d{  
Fbu4GRgJ3  
public static void sort(int[] data) { Mh2b!B  
sort(data, IMPROVED_QUICK); =H8FV09x}  
} 4h_YVG]ur  
private static String[] name={ #]5KWXC'~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" q2J |koT  
}; N>YSXh`W`y  
?;htK_E\*  
private static Sort[] impl=new Sort[]{ J5F@<vi  
new InsertSort(), Dn J `]r  
new BubbleSort(), 'I+M*Iy  
new SelectionSort(), Nu?A>Q  
new ShellSort(), %*!6R:gAp  
new QuickSort(), n"aF#HR?0d  
new ImprovedQuickSort(), AaxQBTB  
new MergeSort(), ub fh4  
new ImprovedMergeSort(), ^^7@kh mNl  
new HeapSort() mD.6cV  
}; {]8|\CcY?  
$#+D:W)az  
public static String toString(int algorithm){ 7g]mrI@  
return name[algorithm-1]; (yi zM  
} P*?|E@;s`  
WA1d8nl  
public static void sort(int[] data, int algorithm) { =No#/_  
impl[algorithm-1].sort(data); ~GX ]K H  
} oy#(]K3`O  
QICxSk  
public static interface Sort { B+~ /-3  
public void sort(int[] data); c1i:m'b_5  
} # $k1w@  
%i/|}K  
public static void swap(int[] data, int i, int j) { Q:Pp'[ RK  
int temp = data; *yw!Y{e!9  
data = data[j]; U ^GVz%\  
data[j] = temp; z8'zH>  
} q78OP}  
} LTzdg >\oJ  
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