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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。 [1G4he%  
插入排序: $*`fn{2  
`?2S4lN/  
package org.rut.util.algorithm.support; W 29@`93  
;_1D-Mf  
import org.rut.util.algorithm.SortUtil; :&9#p% /  
/** N=)N   
* @author treeroot maXQG&.F  
* @since 2006-2-2 Q<wrO  
* @version 1.0 =uMoX -  
*/ L&.9.Ll  
public class InsertSort implements SortUtil.Sort{ E{(7]Wri  
pN1W|Wv2  
/* (non-Javadoc) xzAyE5GL>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {Lrez E4  
*/ &5~bJ]P   
public void sort(int[] data) { ,K,n{3]  
int temp; !1-:1Whz8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '<4/Md[  
} FJ}/g ?  
} x_s9DkX  
} [;83 IoU}  
`>g: :  
} P)7SK&]r;=  
~eA7:dZLb  
冒泡排序: gR?=z}`@p  
305()  
package org.rut.util.algorithm.support; jaFBz&P/#  
NcwZ_*sqj  
import org.rut.util.algorithm.SortUtil; W7_X=>l  
#L` @["  
/** j2k,)MHu!x  
* @author treeroot QUH USDT  
* @since 2006-2-2 <t.yn\G-w  
* @version 1.0 m!tB;:6  
*/ Go= MG:`  
public class BubbleSort implements SortUtil.Sort{ !J3g,p*  
<;=?~QK%-  
/* (non-Javadoc) W(9-XlYKE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =M*31>"I0  
*/ E}b" qOV  
public void sort(int[] data) { 3.xsCcmP  
int temp; qVx4 t"%L>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ rMdOE&5G  
if(data[j] SortUtil.swap(data,j,j-1); gcQ>:m i  
} mXAX%M U  
} ![0\m2~iv  
} OLXG0@  
} ,1a6u3f,  
18zv]v %  
} 1I<fp $ h  
u?&P6|J&  
选择排序: S)>L 0^M1  
;mjk`6p  
package org.rut.util.algorithm.support; eYOwdTrq  
+j%!RS$ko  
import org.rut.util.algorithm.SortUtil; K_G( J>  
e)zE*9  
/** 7:)=  
* @author treeroot u$X [=  
* @since 2006-2-2 3ktjMVy\  
* @version 1.0 O>IY<]x>L  
*/ `gDpb.=Y  
public class SelectionSort implements SortUtil.Sort { %7x x"$P:R  
g~rZ=  
/* l#Ipo5=  
* (non-Javadoc) 9l]+ rs +  
* Hca vA{H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h-].?X,]Q  
*/ tMR&>hM  
public void sort(int[] data) { W_Z%CBjcT  
int temp; sC(IeGbX  
for (int i = 0; i < data.length; i++) { 0r*E$|zZ  
int lowIndex = i; .hzzoLI2  
for (int j = data.length - 1; j > i; j--) { zn@<>o8hU  
if (data[j] < data[lowIndex]) { ; $i{>mDT  
lowIndex = j; zogw1g&C  
} LPc)-t|p"  
} @!"w.@ Y  
SortUtil.swap(data,i,lowIndex); .D!0$W mOZ  
} iqreIMWz  
} | (JxtQqQg  
=8?y$WE  
} =\"88e;b2  
V|gW%Z,j  
Shell排序: Nj rF":'Y  
 z"Miy  
package org.rut.util.algorithm.support; 1hp`.!3]H  
?#YheML?  
import org.rut.util.algorithm.SortUtil; Ye% e!  
ikX"f?Q;S2  
/** BiT #bg  
* @author treeroot 9~n`6;R  
* @since 2006-2-2  sC1Mwx  
* @version 1.0 PV$)k>H-  
*/ 't.I YBHx  
public class ShellSort implements SortUtil.Sort{ [uU"=H|  
kVz9}Xp"  
/* (non-Javadoc) Yd'Fhvo8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j)xRzImu  
*/ Tsch:r S  
public void sort(int[] data) { n=J~Rssp  
for(int i=data.length/2;i>2;i/=2){ LM\H%=*L  
for(int j=0;j insertSort(data,j,i); #s>AiD  
} &&T\PspM  
} 8eq*q   
insertSort(data,0,1); l25_J.e  
} U*(/eEtd-  
>HNBTc=~t  
/** u atY:GSR  
* @param data )eIC5>#.  
* @param j `@TWZ%f6  
* @param i 55q!2>Jh.  
*/ Q]$gw,H"6  
private void insertSort(int[] data, int start, int inc) { v3O+ ;4  
int temp; 5.! OC5tO  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #{K}o}  
} 0)F.Y,L  
} Z.'j7(tu  
} ?1w{lz(P  
[$M=+YRHMW  
} K)b@,/5  
K</EVt,U~  
快速排序: #N Qpr  
;E:vsVK  
package org.rut.util.algorithm.support; &n$kVNE  
/5:2g# S4  
import org.rut.util.algorithm.SortUtil; epN> ;e z  
!iv6k~.e'2  
/** 6<1 2j7  
* @author treeroot /Js A[}.6  
* @since 2006-2-2 kZ<0|b  
* @version 1.0 `(tVwX4  
*/ IR JN  
public class QuickSort implements SortUtil.Sort{ ,+2!&"zD  
PWciD '!  
/* (non-Javadoc) 6`Hd)T5{w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @=_4i&]$  
*/ I;1W6uD=  
public void sort(int[] data) { |BGB60}]f  
quickSort(data,0,data.length-1); |"}oGL6-  
} Ey|{yUmU+  
private void quickSort(int[] data,int i,int j){ HQ /D)D  
int pivotIndex=(i+j)/2; 4g4[n7  
file://swap _D+pJ{@W  
SortUtil.swap(data,pivotIndex,j); >AK9F. _z  
)j,Y(V$P  
int k=partition(data,i-1,j,data[j]); de=){.7Y  
SortUtil.swap(data,k,j); ^AhV1rBB  
if((k-i)>1) quickSort(data,i,k-1); ~:FF"T>  
if((j-k)>1) quickSort(data,k+1,j); xVxN @[  
s.|OdC>U =  
} ly[j=vBV  
/** {%wF*?gk  
* @param data =hRo#]{(K  
* @param i ncGt-l<9  
* @param j #`]`gNB0Yg  
* @return ej91)3AO  
*/ j]HzI{7y  
private int partition(int[] data, int l, int r,int pivot) { :2t0//@X  
do{ ='A VI-go5  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); GFGW'}w-  
SortUtil.swap(data,l,r); izDfpr}s4  
} m^!Kthq  
while(l SortUtil.swap(data,l,r); 0<i8 ;2KD  
return l; i?wEd!=w  
} T.(C`/VM  
A_e&#O  
} /a,"b8  
2# 72B  
改进后的快速排序: Bnp\G h  
UuS6y9@v  
package org.rut.util.algorithm.support; dNu?O>=  
,7wYa&  
import org.rut.util.algorithm.SortUtil; 1]/;qNEv  
{~9zuNi  
/** $NR[U+  
* @author treeroot xb\EJ1M>  
* @since 2006-2-2 3wfcGQn|sD  
* @version 1.0 6xDk3   
*/ 1'f_C<.0  
public class ImprovedQuickSort implements SortUtil.Sort { 4M&$wi  
s)WA9PiC  
private static int MAX_STACK_SIZE=4096; ~\am%r>  
private static int THRESHOLD=10; CU|E-XPW  
/* (non-Javadoc) &5y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^}P94(oz  
*/ (7qlp*8.s  
public void sort(int[] data) { nXn@|J&z~U  
int[] stack=new int[MAX_STACK_SIZE]; $.D )Llcq  
qWH^/o  
int top=-1; i(% 2t(wf+  
int pivot; 1 *' /B  
int pivotIndex,l,r; g>t1rZ  
bll[E}E|3  
stack[++top]=0; *)RKU),3nL  
stack[++top]=data.length-1; 6>]  
g**!'T4&o  
while(top>0){ O84:ejro  
int j=stack[top--]; mo^E8t.  
int i=stack[top--]; %?[gBf[y  
c!E{fSP  
pivotIndex=(i+j)/2; *+rfRH]a  
pivot=data[pivotIndex]; AO5&Y.A#  
|tAkv  
SortUtil.swap(data,pivotIndex,j); )p>Cf_[.  
v]M:HzP  
file://partition ;U3:1hn  
l=i-1; yP7b))AW9  
r=j; R3G\Gchd  
do{ f" Iui  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2|j=^  
SortUtil.swap(data,l,r); t]SB .ja  
} -+[Lc_oNPx  
while(l SortUtil.swap(data,l,r); X| \`\[  
SortUtil.swap(data,l,j); :;_}Gxx  
B& @ pZYl  
if((l-i)>THRESHOLD){ 81E EYf  
stack[++top]=i; ,f^fr&6jb  
stack[++top]=l-1; S`vt\g$ dN  
} A8tJ&O rwY  
if((j-l)>THRESHOLD){ e.vt"eRB  
stack[++top]=l+1; Fj`k3~tUw  
stack[++top]=j; n{N0S^h  
} E2M<I;:EA  
QqQhQGV  
} f$FO 1B)  
file://new InsertSort().sort(data); )(,O~w  
insertSort(data); 4^r6RS@z  
} =Xvm#/  
/** +d#8/S*  
* @param data IM1&g7Qs2  
*/ =Fc]mcJ69  
private void insertSort(int[] data) { [\3ZMH *  
int temp; >/74u/&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rA ={;`  
} se.HA  
} 2V]a+Cgk  
} J&j5@  
by+xK~>  
} LilK6K  
B:X%k/{  
归并排序: S"*k#ao  
j1`<+YT<#  
package org.rut.util.algorithm.support; `^Ll@Cx"  
&wlD`0v  
import org.rut.util.algorithm.SortUtil; G2N0'R "  
8 SU0q9X.  
/** 0uD3a-J  
* @author treeroot 'Y @yW3K  
* @since 2006-2-2 S(CkA\[rz  
* @version 1.0 SZXSVz0j  
*/ 6:wk=#w  
public class MergeSort implements SortUtil.Sort{ rmggP(  
2pmj*Y3"8  
/* (non-Javadoc) K&&T:'=/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3ibQbk  
*/ {X<g93  
public void sort(int[] data) { j5DCc,s  
int[] temp=new int[data.length]; C7F\Y1Wj  
mergeSort(data,temp,0,data.length-1); OCu_v%G 0  
} T;3qE1c  
FS 5iUH+5  
private void mergeSort(int[] data,int[] temp,int l,int r){ =~JVU  
int mid=(l+r)/2; iDcTO}  
if(l==r) return ; %Mj,\J!  
mergeSort(data,temp,l,mid); aAe`o2Xs  
mergeSort(data,temp,mid+1,r); <.Zh{"$qo  
for(int i=l;i<=r;i++){ OK v2..8  
temp=data; J-/w{T8:  
} 9{4oz<U  
int i1=l; 8x- 19#  
int i2=mid+1; /fUdb=!Z  
for(int cur=l;cur<=r;cur++){ 3|!3R'g/ >  
if(i1==mid+1) EC5 = 2w<  
data[cur]=temp[i2++]; XY{N"S8  
else if(i2>r) ?{aC-3VAT  
data[cur]=temp[i1++]; uDND o  
else if(temp[i1] data[cur]=temp[i1++]; Ce-= -  
else }'tJc $!  
data[cur]=temp[i2++]; |J4sQ!%K  
} g4k3~,=D3  
} Y!45Kio  
7k,BE2]"  
} q)9n%- YgP  
2FaCrc/  
改进后的归并排序: bD=H$)  
*lA+ -gkK*  
package org.rut.util.algorithm.support; /&|p7  
=v^#MU{k?  
import org.rut.util.algorithm.SortUtil; C-S>'\ |8  
k62s|VeU  
/** VoYL}67c  
* @author treeroot b-/QZvg  
* @since 2006-2-2 @;Jv/N6@  
* @version 1.0 WZ>nA[/  
*/ |hj!NhBe  
public class ImprovedMergeSort implements SortUtil.Sort { (/nnN4\=  
,\iXZ5"R  
private static final int THRESHOLD = 10; E9mu:T  
h2x9LPLBxT  
/* . s>@@m-  
* (non-Javadoc) K" VcPDK  
* 5?H wM[`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N@tKgx  
*/ ~tWh6-:|{J  
public void sort(int[] data) { c_ncx|dUs  
int[] temp=new int[data.length]; xDU \mfeGj  
mergeSort(data,temp,0,data.length-1); ?7V~>i8[  
} 9#7W+9  
@Ol(:{<  
private void mergeSort(int[] data, int[] temp, int l, int r) { t O.5  
int i, j, k; Ph]b6  
int mid = (l + r) / 2; NA2={RB;  
if (l == r) qJT/4 8lf_  
return; fQC{Lc S  
if ((mid - l) >= THRESHOLD) awo'#Y2>  
mergeSort(data, temp, l, mid); *<S>PbqLw  
else /d}"s.3p  
insertSort(data, l, mid - l + 1); BFw_T3}zn  
if ((r - mid) > THRESHOLD) {e|.AD  
mergeSort(data, temp, mid + 1, r); %w[Z/  
else q=->) &D%  
insertSort(data, mid + 1, r - mid);  s&pnB  
9s_^?q  
for (i = l; i <= mid; i++) { tqpO3  
temp = data; @Q,Q"c2  
} O!nS3%De  
for (j = 1; j <= r - mid; j++) { `XH0S`B  
temp[r - j + 1] = data[j + mid]; Z" ;q w  
} G3:!]}  
int a = temp[l]; OFtf)cGE  
int b = temp[r];  '4{=x]K  
for (i = l, j = r, k = l; k <= r; k++) { aOd#f:{y  
if (a < b) { <-?C\c~G@  
data[k] = temp[i++]; .Ja].hP  
a = temp; ~Z/,o)  
} else { NW5OLa")J<  
data[k] = temp[j--]; Q;VuoHj!  
b = temp[j]; SWx: -<  
} nl 'MWP  
} v.<mrI#?  
} hT1JEu  
'I/_vqp@  
/** [5~mP`He  
* @param data ";=!PL  
* @param l DqQ p47kp  
* @param i _rB,N#{2R=  
*/ -->0e{y  
private void insertSort(int[] data, int start, int len) { YX-~?Pl  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +={K -g7U  
} CR'%=N04^  
} HdxP:s.T  
} R)k\  
} I[k"I(  
:!g|pd[{ag  
堆排序: v =y 2  
;DK%!."%  
package org.rut.util.algorithm.support; ,\v'%,:C  
D {Ol8:  
import org.rut.util.algorithm.SortUtil; gep#o$P  
R6(:l; W  
/** hm73Zy  
* @author treeroot RV  V`  
* @since 2006-2-2 S j~SG  
* @version 1.0 ="YGR:  
*/ B }%2FUv  
public class HeapSort implements SortUtil.Sort{ ~ C%I'z'  
nI]EfHU  
/* (non-Javadoc) <7Pp98si,u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r~)fAb?  
*/ !\4B.  
public void sort(int[] data) { #}y8hzS$  
MaxHeap h=new MaxHeap(); ?Q-Tyf$3  
h.init(data); 9r]|P}yuS  
for(int i=0;i h.remove(); w1"+HJd  
System.arraycopy(h.queue,1,data,0,data.length); SdYf^@%}F  
} ErNYiYLi]  
Oq.ss!/z  
private static class MaxHeap{ gEj#>=s  
*KvD$(ny  
void init(int[] data){ c$ZV vu  
this.queue=new int[data.length+1]; -sQ[f18  
for(int i=0;i queue[++size]=data; *"w hup[  
fixUp(size); 4l  ZK@3  
} 0i_:J  
} klJ21j0Bb2  
rT[qh+KWe  
private int size=0; 2.z-&lFBZ  
qMJJBl  
private int[] queue; 6E}9uwQ  
wv3,% lN  
public int get() { QKj0~ia 5  
return queue[1]; HGGq;Nbm  
} `RnWh9  
Gf\h7)T\  
public void remove() { O,B\|pd2  
SortUtil.swap(queue,1,size--); 9 5mf  
fixDown(1); j-ej7  
} acl<dY6  
file://fixdown DD$> 3`  
private void fixDown(int k) { W\kli';jyC  
int j; y,nmPX?]n  
while ((j = k << 1) <= size) { VQla.Y  
if (j < size %26amp;%26amp; queue[j] j++; aL;!BlU8v  
if (queue[k]>queue[j]) file://不用交换 mcez3gH  
break; e7U\gtZ.  
SortUtil.swap(queue,j,k); {zAI-?#*u  
k = j; .}!.4J%q2  
} 7_i8'(``  
} Kb?{^\FiU  
private void fixUp(int k) { ~'_cBJ 'XD  
while (k > 1) { ;yJ:W8U]+;  
int j = k >> 1; o]oiJvOr  
if (queue[j]>queue[k]) &+2l#3}  
break; ,_3hbT8Q  
SortUtil.swap(queue,j,k); tz@MZs09  
k = j; 1.!U{>$  
} }9S}?R  
} 0y9 b0G  
p' >i3T(  
} .ImaM  
[7v|bd  
} ZkbE&7Z  
8v;^jo>ug  
SortUtil: BNK]Os  
nzflUR{`-  
package org.rut.util.algorithm; h+g\tYWGP  
v(2N@s <%  
import org.rut.util.algorithm.support.BubbleSort; J3_aHI  
import org.rut.util.algorithm.support.HeapSort; u;_~{VJ-  
import org.rut.util.algorithm.support.ImprovedMergeSort; uNzc,OH  
import org.rut.util.algorithm.support.ImprovedQuickSort; p:4jY|q  
import org.rut.util.algorithm.support.InsertSort; h+ [6i{  
import org.rut.util.algorithm.support.MergeSort; O_:l;D#i  
import org.rut.util.algorithm.support.QuickSort; _nbr%PD,  
import org.rut.util.algorithm.support.SelectionSort; aZA ``#p+  
import org.rut.util.algorithm.support.ShellSort; ]1!" q40)]  
3%Y:+%VE  
/** @z@%vr=vX  
* @author treeroot D!&(#Vl _  
* @since 2006-2-2 P"vrYom  
* @version 1.0 3xChik{  
*/ =j,WQ66r3  
public class SortUtil { F[jE#M=k  
public final static int INSERT = 1; ,L/x\_28  
public final static int BUBBLE = 2; |u&cN-}C d  
public final static int SELECTION = 3; P"w\hF  
public final static int SHELL = 4; |H5.2P&9-5  
public final static int QUICK = 5; I/f\m}}ba  
public final static int IMPROVED_QUICK = 6; V"4Z9Qg}  
public final static int MERGE = 7; E8# >k  
public final static int IMPROVED_MERGE = 8; ;Q;j@yx  
public final static int HEAP = 9; j!u)V1,  
#V!a<w4_  
public static void sort(int[] data) { KrE 'M  
sort(data, IMPROVED_QUICK); ntW@Fm:bw>  
} 9|+6@6VY!  
private static String[] name={ mOE *[S)  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" .;?!I_`  
}; eTuqK23  
z K<af  
private static Sort[] impl=new Sort[]{ g":[rXvId  
new InsertSort(), R+M&\ 5  
new BubbleSort(), T D _@0Rd  
new SelectionSort(),  z:,PwLU  
new ShellSort(), V_+&Y$msi~  
new QuickSort(), 9@ tp#  
new ImprovedQuickSort(), V%s g+D2  
new MergeSort(), 8+F5n!  
new ImprovedMergeSort(), Kw -SOFE  
new HeapSort() 4yl{:!la  
}; i>F=XE  
3P cVE\GN  
public static String toString(int algorithm){ `R[Hxi  
return name[algorithm-1]; }E 'r?N  
} _Iy\,<  
8%[pno |0I  
public static void sort(int[] data, int algorithm) { @Wu-&Lb  
impl[algorithm-1].sort(data); L:G#>  
} ZwmucY%3  
-#|D>  
public static interface Sort { q A)O kR'm  
public void sort(int[] data); "`vRHeCKN  
} *M.xVUPr  
$]2)r[eA)  
public static void swap(int[] data, int i, int j) { '0+*  
int temp = data; ZitM<Qi&y  
data = data[j]; d!,t_jM0  
data[j] = temp; )[Y B&  
} ScPVjqG2{  
} PVCoXOqh  
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