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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。 J|C CTXT  
插入排序: )i[K1$x2  
p~OX1RBI  
package org.rut.util.algorithm.support; Kh{_BdN  
:PNhX2F  
import org.rut.util.algorithm.SortUtil; (dP9`Na]  
/** r o8C^d]  
* @author treeroot c=aVYQ"2  
* @since 2006-2-2 rge s`&0  
* @version 1.0 1rV9dM#F  
*/ Tsocc5gWZ*  
public class InsertSort implements SortUtil.Sort{ ]F #0to  
!}q@O-}j  
/* (non-Javadoc) 5hfx2 O)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uTrQ<|}#  
*/ ;ZTh(_7  
public void sort(int[] data) { Yu:($//w  
int temp; |#EI(W?`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O@>{%u  
} j.:f =`xf  
} A_+*b [P  
} wrVR[v>E<  
S"/gZfxer  
} G$s=P  
0OBwe6*  
冒泡排序: Ryn@">sVI  
{'cdi`  
package org.rut.util.algorithm.support; r@ba1*y0  
:|Bzbn=N2  
import org.rut.util.algorithm.SortUtil; 'grb@+w(  
5"w%  
/**  (Kj>Ao  
* @author treeroot h([qq<Lzs  
* @since 2006-2-2 9g7Ok9dF  
* @version 1.0 2>.>q9J(  
*/ %3T:W\h  
public class BubbleSort implements SortUtil.Sort{ wD SSgk  
10*^  
/* (non-Javadoc) <<6gsKP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hr/J6kyB)  
*/ r6 L  
public void sort(int[] data) { Yy_mX}\x  
int temp; u HXb=U  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ps~)l#gue  
if(data[j] SortUtil.swap(data,j,j-1); w^/"j_p@  
} )T@+"Pw8t  
} S.^x)5/,,T  
} aW b5w  
} 2Oy-jM  
3A el  
} K\$z,}0  
sJ|IW0Mr  
选择排序: O9Yk5b;  
A{Q~@1  
package org.rut.util.algorithm.support; cQh=Mri]  
i(kr#XsU  
import org.rut.util.algorithm.SortUtil; ~q{QquYV  
v9Ez0 :)  
/** -ha[xM05  
* @author treeroot AI2>{V  
* @since 2006-2-2 #K/#-S  
* @version 1.0 NjSjE_S2B8  
*/ O9F#gO|!  
public class SelectionSort implements SortUtil.Sort { q|e<b  
V,:~FufM^  
/* 8C2!Wwz`J8  
* (non-Javadoc) 7,3v,N|  
* FBrJVaF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !_h<w?)  
*/ SZD@<3Nb  
public void sort(int[] data) { k!m9 l1x  
int temp; +6 x:+9S  
for (int i = 0; i < data.length; i++) { z#sSLE.$Z  
int lowIndex = i; +IfU 5&5<  
for (int j = data.length - 1; j > i; j--) { ^ v@& q  
if (data[j] < data[lowIndex]) { j~Ubpf  
lowIndex = j; on0>_-n)  
} _1P8rc"Dx  
} (1Ii86EP  
SortUtil.swap(data,i,lowIndex); WK6|e[iP  
} lF!Iu.MM 9  
} ^ZO3:"t!w  
pc<A ,?  
} -j"2rIl4#  
gNzamorv[  
Shell排序: x)o`w"]al  
N^K@$bs4^  
package org.rut.util.algorithm.support; KR/SMwy  
)wz3 m L  
import org.rut.util.algorithm.SortUtil; n7K\\|X  
QsH Fk5)  
/** i fbO<  
* @author treeroot f}F   
* @since 2006-2-2 kc70HrG  
* @version 1.0 2:& [r*  
*/ n+uDg  
public class ShellSort implements SortUtil.Sort{ Zw"K69A)  
pwO U6A!  
/* (non-Javadoc) Qz/1^xy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B":u5_B  
*/ Se %"C&  
public void sort(int[] data) { \d{S3\7  
for(int i=data.length/2;i>2;i/=2){ %QrpFE5 V5  
for(int j=0;j insertSort(data,j,i); Q@/358.LA  
} xBi``x2eY  
} KN9e""  
insertSort(data,0,1); 96 !e:TU  
} ,\n%e'  
A VbGJ+  
/** o2M4?}TpIV  
* @param data ThSB\  
* @param j )$e_CJ}9e  
* @param i z wJ Vi9sO  
*/ 42mZ.,<  
private void insertSort(int[] data, int start, int inc) { s4{WPU9  
int temp; Bys_8x}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2k$~Mv@L  
} )~l`%+  
} <i!7f26r  
} OJF41Z  
.IJgkP)!]  
} Xi!`+N4  
6:vdo~  
快速排序: ]DO"2r  
xK3}z N$T  
package org.rut.util.algorithm.support; , HE +|y#  
H o;bgva  
import org.rut.util.algorithm.SortUtil; d=_Wgz,d  
S*-/#j  
/** =fr_` "?k  
* @author treeroot _7LZ\V+MLW  
* @since 2006-2-2 7xmif YC  
* @version 1.0 NXw$PM|+R  
*/ APA:K9jD  
public class QuickSort implements SortUtil.Sort{ D~s TQfWr  
Ev7fvz =  
/* (non-Javadoc) 3r (i=ac0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZNEWUt{+;^  
*/ (NBq!;_2,x  
public void sort(int[] data) { 7pY7iR_  
quickSort(data,0,data.length-1); eBW=bK~[VP  
} *To 5\|  
private void quickSort(int[] data,int i,int j){ hh<Es|v  
int pivotIndex=(i+j)/2; G*;6cV19  
file://swap h^}r$k_n  
SortUtil.swap(data,pivotIndex,j); h NCoX*icd  
Y@Zv52,  
int k=partition(data,i-1,j,data[j]); f2"1^M  
SortUtil.swap(data,k,j); \%FEQa0u  
if((k-i)>1) quickSort(data,i,k-1); kr|u ||  
if((j-k)>1) quickSort(data,k+1,j); J!GWP:b3  
*l[;g  
} yfd$T}WW6  
/** }H4Z726  
* @param data Tl9;KE|  
* @param i eaxp(VX?oy  
* @param j LZB=vc|3/  
* @return dk^Uf84.Gr  
*/ 0Lo)Ni^"  
private int partition(int[] data, int l, int r,int pivot) { };:+0k/  
do{ 8JU9Qb]L'I  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u,R;=DNl  
SortUtil.swap(data,l,r); $# /-+>  
} mXH\z  
while(l SortUtil.swap(data,l,r); / ao|v  
return l; x]Nk T  
} yR Zb_Mq9U  
tX$ v)O|  
} $dp;$X3  
X7*i -v@  
改进后的快速排序: Oz[]]`C1  
4[ 7) $  
package org.rut.util.algorithm.support; &pCNOHi|  
ue5C ]  
import org.rut.util.algorithm.SortUtil; 8~=<!(M)m/  
z|o7k;raH  
/** Vk/!_)  
* @author treeroot a}Dx"zl;  
* @since 2006-2-2 :q.g#:1s  
* @version 1.0 TA.ugF)h  
*/ NT^m.o~4  
public class ImprovedQuickSort implements SortUtil.Sort { fR& ;E  
5p.vo"7  
private static int MAX_STACK_SIZE=4096; }J~ d6m  
private static int THRESHOLD=10; {*Ag[HS0u  
/* (non-Javadoc) g8JO/s5xV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t4RI%m\  
*/ LovVJ^TD0i  
public void sort(int[] data) { ,[ UqUEO  
int[] stack=new int[MAX_STACK_SIZE]; wN|;_~h2  
dOm@cs  
int top=-1; fL #e4  
int pivot; < )dqv0=  
int pivotIndex,l,r; %yj z@  
4@b~)av)  
stack[++top]=0; aDV~T24  
stack[++top]=data.length-1; ; S(KJV  
W:s>?(6?  
while(top>0){  T\(w}  
int j=stack[top--]; 59Lv/Mfy  
int i=stack[top--]; C#^V<:9  
vn]e`O>y  
pivotIndex=(i+j)/2; 9vQI ~rz?  
pivot=data[pivotIndex]; ; i)NP X  
}#u.Of`6"  
SortUtil.swap(data,pivotIndex,j); K}vP0O}  
D%=VhKq  
file://partition fEdp^oVg  
l=i-1; lUL6L 4m  
r=j; 3Kx&+  
do{ eHQS\n  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #2/2X v  
SortUtil.swap(data,l,r); f,jN"  
} FZvh]ZX  
while(l SortUtil.swap(data,l,r); SBf8Ipe  
SortUtil.swap(data,l,j); eWN[EJI<  
n=z=%T6  
if((l-i)>THRESHOLD){ ! sN~w  
stack[++top]=i; LpQ=Y]{j  
stack[++top]=l-1; 'n>v}__&|  
} oMb&a0-7u  
if((j-l)>THRESHOLD){ 4Y2!q$}I+  
stack[++top]=l+1; _Q**4  
stack[++top]=j; H%peE9>$  
} '%W`:K'  
Smt&/~7D%  
} ^69ZX61vt  
file://new InsertSort().sort(data); /8Sr(  
insertSort(data); A-&'/IHR"B  
} |7pi9  
/** ~7G@S&<PK(  
* @param data + a,x  
*/ 5DI&pR1eZ  
private void insertSort(int[] data) {  )S8fFV  
int temp; mRECd Gst  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2C@ui728  
} < Z>p1S  
} # :)yh]MP  
} 'm4v)w<y#  
7m<;"e)  
} )B!64'|M  
$`wo8A|)  
归并排序: 1v?|n8  
DNyU]+\L[l  
package org.rut.util.algorithm.support; ta*6xpz-\Q  
xoYaL  
import org.rut.util.algorithm.SortUtil; <hv {,1p-r  
ev LZ<|  
/** -Wt (t2  
* @author treeroot 67{3/(`x  
* @since 2006-2-2 >T)#KQ1t  
* @version 1.0 uto E}U7]  
*/ <y!(X"n`  
public class MergeSort implements SortUtil.Sort{ :&'[#%h8  
9R1S20O  
/* (non-Javadoc) %n!7'XF'[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "%?$BoJR0  
*/ 3c|u2Pl  
public void sort(int[] data) { 1M<;}hJ{/  
int[] temp=new int[data.length]; N+#lS7  
mergeSort(data,temp,0,data.length-1); X%lk] &2  
} ]iHSUP  
q qFN4AO  
private void mergeSort(int[] data,int[] temp,int l,int r){ fhp+Ep!0Y  
int mid=(l+r)/2; d>YX18'<Q  
if(l==r) return ; m+LP5S  
mergeSort(data,temp,l,mid); 4r- CF#o  
mergeSort(data,temp,mid+1,r); r/e} DYL&  
for(int i=l;i<=r;i++){ ndE"v"_H  
temp=data; 6$ \69   
} h)o5j-M>4  
int i1=l; 0%b !ARix  
int i2=mid+1; i9O;D*  
for(int cur=l;cur<=r;cur++){ tT`{xM  
if(i1==mid+1) _]"uq/UWp  
data[cur]=temp[i2++]; 7+c}D>/`:  
else if(i2>r) k "Qr  
data[cur]=temp[i1++]; hVLV Mqd  
else if(temp[i1] data[cur]=temp[i1++]; 8n~ o="  
else L_(Y[!  
data[cur]=temp[i2++]; rWS],q=c  
} ig}H7U2q@  
} yq]/r=e!k  
mzH3Q564  
} M WHzrqCA  
eZ`x[g%1  
改进后的归并排序: #_9Jam%M  
%&\DCAFk  
package org.rut.util.algorithm.support; hG!|ts  
yGZsPQIaV  
import org.rut.util.algorithm.SortUtil; ps&p|  
d:GAa   
/** &$<7]a\dM  
* @author treeroot JXKo zy41  
* @since 2006-2-2 b 8~7C4  
* @version 1.0 skzTw66W.  
*/ 3Jj 3!aDB  
public class ImprovedMergeSort implements SortUtil.Sort { ;: 4PT~\*  
yh{Wuz=T  
private static final int THRESHOLD = 10; nZP%Z=p7  
US2Tdmy@05  
/* &br_opNi  
* (non-Javadoc) NU |vtD  
* 1 ,e`,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2& ZoG%)  
*/ Hr/3nq}.  
public void sort(int[] data) { =!P  
int[] temp=new int[data.length]; aX,ux9#  
mergeSort(data,temp,0,data.length-1); kXY p.IVA  
} LAcK%  
YM4njkI7  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,`.`}'  
int i, j, k; }v$T1Cw  
int mid = (l + r) / 2; .In8!hjYy4  
if (l == r) @$] CC1Y  
return; o:nh3K/YJ  
if ((mid - l) >= THRESHOLD) YdiXj |k+  
mergeSort(data, temp, l, mid); 6,:`esl  
else  OYwH$5  
insertSort(data, l, mid - l + 1); "u.4@^+i  
if ((r - mid) > THRESHOLD) QCVwslj,K  
mergeSort(data, temp, mid + 1, r); F]k$O$)0  
else Tj_~BT  
insertSort(data, mid + 1, r - mid); avwhGys#  
 EWn\ ]f|  
for (i = l; i <= mid; i++) { wML5T+  
temp = data; dd|/I1  
} lL]8~3b  
for (j = 1; j <= r - mid; j++) { 8j%hxAV$  
temp[r - j + 1] = data[j + mid]; #M5[TN!  
} Ey**j  
int a = temp[l]; =sa bJsgL  
int b = temp[r]; -YfpfNt  
for (i = l, j = r, k = l; k <= r; k++) { 53jtwklA  
if (a < b) { q)E J?-  
data[k] = temp[i++]; &f$[>yg1-  
a = temp; "J(7fL$!  
} else { Ow7}&\;^-  
data[k] = temp[j--]; 2Y'=~*tV  
b = temp[j]; 2O~I.(9(  
} M+q|z0U  
} l: X]$2;  
} "Ca?liy  
a}]zwV&  
/** DU.nXwl]  
* @param data `fUem,$)1F  
* @param l A! j4;=}  
* @param i KN"V(<!)~  
*/ 7 *#pv}Y  
private void insertSort(int[] data, int start, int len) { g,seqh%  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); C)Ez>~Z  
} 3"OD"  
} QA3q9,C"  
} U]h5Q.<SG  
} Q<F-l. q   
.sk$@Q  
堆排序: -{A!zTw1w  
nS}XY  
package org.rut.util.algorithm.support; (8*& 42W  
a ykNH>#Po  
import org.rut.util.algorithm.SortUtil; k_c8\::p#  
BEv>?T 0  
/** fy`e)?46  
* @author treeroot %kg%ttu7  
* @since 2006-2-2 }FTyRHD|  
* @version 1.0 <Eo; CaaF/  
*/ K8l|qe  
public class HeapSort implements SortUtil.Sort{ `<C/-Au  
=N9a!i i|  
/* (non-Javadoc) mt+IB4`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6J|Y+Y$  
*/ 4oF8F)ASj  
public void sort(int[] data) { U0+Hk+  
MaxHeap h=new MaxHeap(); :(|;J<R%_  
h.init(data); (Hcd{]M~  
for(int i=0;i h.remove(); W:7oGZ>4  
System.arraycopy(h.queue,1,data,0,data.length); hoc$aqP6pp  
} ^]$x/1I;  
I]]3=?Y  
private static class MaxHeap{ WJ9=hr  
^+JpI*,  
void init(int[] data){ v [_C^;  
this.queue=new int[data.length+1]; |8$x  
for(int i=0;i queue[++size]=data; D! 1oYr  
fixUp(size); T'cahkSw'O  
} D-/K'|b  
} 3+<}Hm+  
&cSTem 0  
private int size=0; 0@yHT-Dy  
);wSay>%(  
private int[] queue; wjF/c  
C|"h]  
public int get() { ZkW,  
return queue[1]; m ?a&XZ  
} F#X&Tb{  
*v[WJ"8@  
public void remove() { jmbwV,@Q2  
SortUtil.swap(queue,1,size--); 8I)66  
fixDown(1); a a=GW%  
} GNzk Vy:u  
file://fixdown 9pKN^FX,76  
private void fixDown(int k) { u=h:d+rq@  
int j; gRS}Y8  
while ((j = k << 1) <= size) { 6.},y<E  
if (j < size %26amp;%26amp; queue[j] j++; bb# F2r4  
if (queue[k]>queue[j]) file://不用交换  u%<Je  
break; V]cD^Fqp  
SortUtil.swap(queue,j,k); 5Xu2MY=  
k = j; 84UH& b'n  
} IcMfZ {H1  
} 66*/"dBwm  
private void fixUp(int k) { 5-M E Oy(  
while (k > 1) { nc#}-}`5  
int j = k >> 1; n*6Oa/JG7  
if (queue[j]>queue[k]) t@[&8j2B>  
break; W3s>+yU  
SortUtil.swap(queue,j,k); [R[]&\W  
k = j; <(dHh9$~  
} TT3GFP  
} eXY*l>B  
l2"{uCcA  
} >NWrT^rk  
S>isWte  
} ?El8:zt?|  
p]/HZS.-b  
SortUtil: @:\Iw"P  
]z EatY  
package org.rut.util.algorithm; ~0"(C#l 9  
9P;}P! W  
import org.rut.util.algorithm.support.BubbleSort; qjQR0M C  
import org.rut.util.algorithm.support.HeapSort; InnjZ>$  
import org.rut.util.algorithm.support.ImprovedMergeSort; 64Gd^.Z  
import org.rut.util.algorithm.support.ImprovedQuickSort; R57>z`;  
import org.rut.util.algorithm.support.InsertSort; x%Ph``XI  
import org.rut.util.algorithm.support.MergeSort; DPCB=2E  
import org.rut.util.algorithm.support.QuickSort; ~.99H  
import org.rut.util.algorithm.support.SelectionSort; oc+TsVt  
import org.rut.util.algorithm.support.ShellSort; e P]L  
 xE.K  
/** HriY-=ji>a  
* @author treeroot \c1u$'|v  
* @since 2006-2-2 &)[?D<  
* @version 1.0 q1!45a  
*/ H9}z0VI  
public class SortUtil { XpWcf ([  
public final static int INSERT = 1; Y+vG ]?D  
public final static int BUBBLE = 2; `@%hz%8Y  
public final static int SELECTION = 3; LpCJfQ  
public final static int SHELL = 4; g\_J  
public final static int QUICK = 5; 2d),*Cvf  
public final static int IMPROVED_QUICK = 6; !C13E lf  
public final static int MERGE = 7; E,u/^V9x  
public final static int IMPROVED_MERGE = 8; {k BHZ$/  
public final static int HEAP = 9; D d['e  
HK_Vk\e  
public static void sort(int[] data) { .nDB{@#  
sort(data, IMPROVED_QUICK); v@m2c_,  
} UnTnc6Bo7W  
private static String[] name={ F|mppY'<J  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &CP]+ at  
}; v\&C]W]  
dsJMhB_41U  
private static Sort[] impl=new Sort[]{ l9Xz,H   
new InsertSort(), B^|^hZZ>  
new BubbleSort(), Tvp~~Dk  
new SelectionSort(), @fz0-vT,  
new ShellSort(), |E]`rfr  
new QuickSort(), ;t6)(d4z?  
new ImprovedQuickSort(), Sq<ds}o'8l  
new MergeSort(), )gNS%t c*K  
new ImprovedMergeSort(), 8d|/^U.w~V  
new HeapSort() #bIUO2yVo  
}; w?eJVi@w{  
IOL5p*:gz  
public static String toString(int algorithm){ RaT.%:CRm  
return name[algorithm-1]; JWB3;,S  
} d2\#Zlu<  
Nqy)jfyex  
public static void sort(int[] data, int algorithm) { 62s0$vw  
impl[algorithm-1].sort(data); Nw3K@ Ge  
} Z'Uc}M'U  
i>elK<R4  
public static interface Sort { w'i8yl bZ  
public void sort(int[] data); :`Sd5b>  
} gdj,e ^  
yb/v?q?Fk  
public static void swap(int[] data, int i, int j) { !3*:6  
int temp = data; $bo,m2)  
data = data[j]; =|j~*6Hd  
data[j] = temp; (Zi,~Wqm$  
} m)\wbkC  
} 6}/m~m  
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