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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。 pP":,8Q{  
插入排序: sx=1pnP9`  
2[`n<R\  
package org.rut.util.algorithm.support; y4jiOhF<d  
0vfMJzk  
import org.rut.util.algorithm.SortUtil; j[gqS%  
/** ;%2+Tc-7I  
* @author treeroot ,dQ*0XO!  
* @since 2006-2-2 8iY.!.G#|  
* @version 1.0 l hYJectJa  
*/ Al*=%nY  
public class InsertSort implements SortUtil.Sort{ j1g$LAe  
'+/mt_re=  
/* (non-Javadoc) 9ns( F:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fDns r" T  
*/ 4N$Wpx  
public void sort(int[] data) { iu=Mq|t0  
int temp; J[6/dM  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); elGBX h  
} 4z5qXI/<m4  
} rhPv{6Z|7  
} ?GNR ab  
9)vU/fJ|  
} 6/L[`n"G  
_VdJFjY?zc  
冒泡排序: u;nn:K1QFr  
n$SL"iezW?  
package org.rut.util.algorithm.support; 2EpQ(G J  
h )Y .jY  
import org.rut.util.algorithm.SortUtil; i=n;rT  
liPrxuP`  
/** $!9U\Au>2  
* @author treeroot A}9^,C$#  
* @since 2006-2-2 3lWGa7<4Z  
* @version 1.0 >g!$H}\  
*/ n]#YL4j  
public class BubbleSort implements SortUtil.Sort{ <Rw2F?S~)n  
kYkA^Aq  
/* (non-Javadoc) $m5Iv_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N<<wg{QO  
*/ #@BhGB`9Qt  
public void sort(int[] data) { GPh;r7xg6  
int temp; ]SA/KV   
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6)YckxN^  
if(data[j] SortUtil.swap(data,j,j-1); !1R?3rVQS  
} ?SYmsaSr5  
} ,x&WE@tD |  
} W#g!Usf:/  
} I_8 n>\u  
}o!b3*#  
} WP\kg\o  
?E!M%c@,  
选择排序: 7CR#\&h`  
\ky oA Z  
package org.rut.util.algorithm.support; D]iyr>V6'  
8~,zv_Pl  
import org.rut.util.algorithm.SortUtil; 4>d]0=x  
8u)>o* :  
/** >?JUGXAi'{  
* @author treeroot ]lGkZyU hI  
* @since 2006-2-2  ) 4t%?wT  
* @version 1.0 ] rqx><!  
*/ `dX0F=Ag?  
public class SelectionSort implements SortUtil.Sort { 6rE8P#  
9 AD*  
/* Da[#X`Kp$  
* (non-Javadoc) Y]6d Yq{k  
* KI\bV0$p<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `*Wg&u  
*/ RRy D<7s1  
public void sort(int[] data) { mnZfk  
int temp; VgbT/v  
for (int i = 0; i < data.length; i++) { GBS+ 4xL|  
int lowIndex = i; 7R5ebMW V  
for (int j = data.length - 1; j > i; j--) { *\:sHVyG(  
if (data[j] < data[lowIndex]) { a6h+?Q7uF  
lowIndex = j; `j'1V1  
} a6 :hH@,  
} T-4dD  
SortUtil.swap(data,i,lowIndex); 3jfAv@I~  
} wU'+4N".  
} J=kf KQV  
+pK35u  
} EFtn !T  
3hJ51=_0^  
Shell排序: M7Xn=jc  
be-HF;lZe'  
package org.rut.util.algorithm.support; @`B_Q v@  
S/eplz;  
import org.rut.util.algorithm.SortUtil; -0`n(`2  
er BerbEEH  
/** Y evd h<  
* @author treeroot 8.wtv5eZ  
* @since 2006-2-2 "-:g.x*d  
* @version 1.0 j)ln"u0R^B  
*/ "tJ[M  
public class ShellSort implements SortUtil.Sort{ t}}Ti$$>  
\O~/^ Y3U!  
/* (non-Javadoc) #d<"Ub  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1\lZ&KX$i  
*/ <ir]bQT  
public void sort(int[] data) { By[M|4a  
for(int i=data.length/2;i>2;i/=2){ %'. x vC  
for(int j=0;j insertSort(data,j,i); eFy {VpO+  
} >*B59+1P  
} +,7vbs3  
insertSort(data,0,1); _I,GH{lhI  
} l%0-W  
Y0Tw:1a  
/** uTO%O}D N  
* @param data M;AvOk|&  
* @param j pIpdVKen  
* @param i M|@@ LJ'  
*/ ] NW_oRH  
private void insertSort(int[] data, int start, int inc) { Hv' OO@z  
int temp; )B+zv,#q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #_3ZF"[zq  
} /`#JM  
} {ktwX\z  
} NTK9`#SA  
=%I;Y& K  
} -#4QY70H t  
3 Sf':N`u  
快速排序: ;U a48pSv  
O\=Zo9(NHF  
package org.rut.util.algorithm.support; 1x##b [LC  
/Wl8Jf7'  
import org.rut.util.algorithm.SortUtil; rOYYZ)Qw  
hZo  f  
/** kbH@h2Ww  
* @author treeroot L|b[6[XTHL  
* @since 2006-2-2 2*gB~Jn4  
* @version 1.0 p,(W?.ZDN?  
*/ c*R\fQd  
public class QuickSort implements SortUtil.Sort{ S5H}   
h~._R6y  
/* (non-Javadoc) I;?PDhDb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ms3GvPsgv  
*/ hVFZQJ?cv  
public void sort(int[] data) { 211T}a  
quickSort(data,0,data.length-1); {5ehm  
} B=r+ m;(  
private void quickSort(int[] data,int i,int j){ ;>5]KNj  
int pivotIndex=(i+j)/2; Wi\k&V.mE  
file://swap ;/ |tU o$  
SortUtil.swap(data,pivotIndex,j); psiuoYf  
heWQPM|s  
int k=partition(data,i-1,j,data[j]); Ix(,gDN  
SortUtil.swap(data,k,j); Ne3YhCC>  
if((k-i)>1) quickSort(data,i,k-1); tK#/S+l  
if((j-k)>1) quickSort(data,k+1,j); '4M;;sKW  
WD kE 5  
} i>-#QKqJ  
/** &b%2Jx[+  
* @param data #tw_`yh  
* @param i bl10kI:F  
* @param j ?y  "M>#  
* @return `q  | )_  
*/ hc9 ON&L\>  
private int partition(int[] data, int l, int r,int pivot) { jWvi% I qi  
do{ O^ &m  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N<Ym&$xR  
SortUtil.swap(data,l,r); nLANWQk9  
} w|0:0Rc~u  
while(l SortUtil.swap(data,l,r); ru1^. (W2  
return l; [P}mDX  
} v7hw%9(=  
m9D Tz$S.  
} v<(+ l)Ln  
$|[N3  
改进后的快速排序: PAC=LQn&  
=CdrhP_  
package org.rut.util.algorithm.support; 6p&uifY}tR  
>b:5&s\9  
import org.rut.util.algorithm.SortUtil; *c$UIg  
mxpw4  
/** '|Lv -7  
* @author treeroot eZhF<<Y  
* @since 2006-2-2 B:cQsaty  
* @version 1.0 H,7!"!?@N  
*/ (_3'nFg  
public class ImprovedQuickSort implements SortUtil.Sort { wQ9@ l  
LZ&I<ID`-  
private static int MAX_STACK_SIZE=4096; udc9KuR@  
private static int THRESHOLD=10; 1#fR=*ZM"  
/* (non-Javadoc) X1[zkb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p"H /N_b4  
*/ <7L-25 =  
public void sort(int[] data) { *.D{d0A  
int[] stack=new int[MAX_STACK_SIZE]; ZTB6m`  
c@nh>G:y{&  
int top=-1; %uiCC>cC  
int pivot; ,R7j9#D  
int pivotIndex,l,r; Fo~q35uB  
$S2 /*  
stack[++top]=0; F~OQ'59!Pf  
stack[++top]=data.length-1; @`^Z5n.4  
*mYGs )|  
while(top>0){ -Edi"B4K  
int j=stack[top--]; F|oyrG  
int i=stack[top--]; [ `_sH\  
/t2H%#v{  
pivotIndex=(i+j)/2; *Utx0Me  
pivot=data[pivotIndex]; 2FO<Z %Y  
 (wxi!  
SortUtil.swap(data,pivotIndex,j); n!Y}D:6c6  
xbHI 4A"Z  
file://partition hKnV=Ha(  
l=i-1; !tx.2m*5  
r=j; gv(MX ;B#  
do{ FlrYXau  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #e@[{s7  
SortUtil.swap(data,l,r); ]n:R#55A  
} i3$G)W  
while(l SortUtil.swap(data,l,r); +t Prqv"(  
SortUtil.swap(data,l,j); vD/l`Ib:  
c]$$ap  
if((l-i)>THRESHOLD){ J{XRltI+  
stack[++top]=i; I1K%n'D  
stack[++top]=l-1; ^R(=4%8%"  
} $?[pcgv  
if((j-l)>THRESHOLD){ ?zVE7;r4U  
stack[++top]=l+1; D)S_ p&  
stack[++top]=j; ;/IX w>O(/  
} _t4(H))]vG  
5 5Mtjqfp  
} p`52  
file://new InsertSort().sort(data); IEkbVIA(  
insertSort(data); INCD5dihJ  
} Mdp'u$^!  
/** ~u[1Vz4#3  
* @param data 9Gx`[{wI9<  
*/ k!WeE#"(  
private void insertSort(int[] data) { 2$o\`^dy  
int temp; #P!M"_z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); xsS;<uCD  
} <'hoN/g  
} \DD4=XGA  
} L i 9$N"2  
Tn\{*A  
} ;Cty"H,  
{CTJX2&  
归并排序: ^bdXzjf  
N{M25ucAHl  
package org.rut.util.algorithm.support; q,;wD1_wG  
3e\IRF xzb  
import org.rut.util.algorithm.SortUtil; ^\yz`b(A0  
?Ho>  
/** cqm:[0Xf5>  
* @author treeroot 3mg:9]X9  
* @since 2006-2-2 [?$tu%Q(Z  
* @version 1.0 23Q 88z   
*/ E7B?G3|z3  
public class MergeSort implements SortUtil.Sort{ s8' ;4z  
GI:!,9  
/* (non-Javadoc) !>kg:xV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %`/F> `  
*/ z XUr34jF  
public void sort(int[] data) { #60gjHYaV  
int[] temp=new int[data.length]; L[`8 :}M  
mergeSort(data,temp,0,data.length-1); P9q=tC3^  
}   
$ma@z0%8}  
private void mergeSort(int[] data,int[] temp,int l,int r){ %):pfM;b  
int mid=(l+r)/2; h2?\A%  
if(l==r) return ; 3m$Qd#|  
mergeSort(data,temp,l,mid); qHd7C3  
mergeSort(data,temp,mid+1,r); taO(\FOm  
for(int i=l;i<=r;i++){ >S{8sN  
temp=data; NJQy*~P  
} 2 zX9c<S=5  
int i1=l; =&FaMR2  
int i2=mid+1; jL'R4z  
for(int cur=l;cur<=r;cur++){ lWP]}Uy=5~  
if(i1==mid+1) [O]rf+NZ(5  
data[cur]=temp[i2++]; #v6<9>%  
else if(i2>r) n(SeJk%>9  
data[cur]=temp[i1++]; m6gMVon  
else if(temp[i1] data[cur]=temp[i1++]; r{Mn{1:O  
else ?papk4w  
data[cur]=temp[i2++]; w2lO[o~x}  
} l2Rnyb<;;  
} it-2]Nw  
E!L_"GW  
} J 5xZL v  
T~g`;Q%i  
改进后的归并排序: -"#jRP]#  
_U^G*EqL*  
package org.rut.util.algorithm.support; s |o(~2j  
% ;a B#:p6  
import org.rut.util.algorithm.SortUtil; kcMg`pJ4<  
z"FxKN~Z  
/** %<U0  
* @author treeroot L2%D$!9  
* @since 2006-2-2 Kt/:caD  
* @version 1.0 RfT)dS+rAh  
*/ y,qn9  
public class ImprovedMergeSort implements SortUtil.Sort { LIyb+rH#yg  
Lnq CHe  
private static final int THRESHOLD = 10; )FfS7 C\.  
=gZA9@]W2  
/* M<Dvhy[  
* (non-Javadoc) N]\)Ok  
* r!|h3*YA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ip *8R]W  
*/ Ev3,p`zS._  
public void sort(int[] data) { 38:5g_  
int[] temp=new int[data.length]; {7_C|z:'p&  
mergeSort(data,temp,0,data.length-1); &78lep  
} -uhVw_qq#  
/2tP d  
private void mergeSort(int[] data, int[] temp, int l, int r) { bPV;"  
int i, j, k; -q&,7'V  
int mid = (l + r) / 2; s E;2;2u"  
if (l == r) ]AN%#1++U  
return; wb##|XyK<c  
if ((mid - l) >= THRESHOLD) nAX/u[  
mergeSort(data, temp, l, mid); GBT219Z@8  
else Wy /5Qw~s  
insertSort(data, l, mid - l + 1); (io[O?te  
if ((r - mid) > THRESHOLD) 10N0?K"  
mergeSort(data, temp, mid + 1, r); O&VA79\UO  
else ;w._/  
insertSort(data, mid + 1, r - mid); "}oo`+]Cq  
UoSc<h|  
for (i = l; i <= mid; i++) { 8~|v:qk  
temp = data; VAe[x `  
} N0 mh gEA  
for (j = 1; j <= r - mid; j++) { <KI>:@|Sc  
temp[r - j + 1] = data[j + mid]; :EH>&vm  
} us.IdG  
int a = temp[l]; :X}Ie P  
int b = temp[r]; bwJluJ, E  
for (i = l, j = r, k = l; k <= r; k++) { k$kxw_N5d  
if (a < b) { 5Z=GFKf|  
data[k] = temp[i++]; Il#ST  
a = temp; _c(h{dn  
} else { ]c]^(C  
data[k] = temp[j--]; 3/]~#y%2  
b = temp[j]; _p^Wc.[~M  
} _!w69>Nj  
} J.O{+{&cd  
} 9`KFJx6D  
NH*"AE;  
/** {Eqx'j  
* @param data j'lC]}kH  
* @param l Tz0XBH_  
* @param i _3#_6>=M  
*/ Fr2F&NN`D  
private void insertSort(int[] data, int start, int len) { BaMF5f+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yf4 i!~  
} .LbAR u  
} a :cfr*IsK  
} }VHvC"   
} A.RG8"  
8>xd  
堆排序: CdtCxy5  
@xk;]H80  
package org.rut.util.algorithm.support; *)vy%\  
~ftR:F|9  
import org.rut.util.algorithm.SortUtil; 'QTa<Z)E  
$if(n||  
/** KTeR;6oZn"  
* @author treeroot EiyHZ  
* @since 2006-2-2 {s6hi#R>  
* @version 1.0 bw!*=<  
*/ _ x$\E  
public class HeapSort implements SortUtil.Sort{ Gh<#wa['}  
}1Q> A 5e  
/* (non-Javadoc) K@{R?j/+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !P":z0K4  
*/ =)x+f/c]  
public void sort(int[] data) { st>%U9  
MaxHeap h=new MaxHeap(); ~D`  
h.init(data); RVF<l?EI4R  
for(int i=0;i h.remove(); ^S)t;t@x  
System.arraycopy(h.queue,1,data,0,data.length); 0C6T>E7  
} %/SHB  
Owv}lJ  
private static class MaxHeap{ E 0@u|  
phwBil-vUU  
void init(int[] data){ j%':M  
this.queue=new int[data.length+1]; A+z}z@K  
for(int i=0;i queue[++size]=data; 1KjzKFnb  
fixUp(size); c_aj-`BKp  
} R~;8v1>K  
} NS "1zR+  
.k%/JF91n  
private int size=0; Q<yvpT(  
e488}h6#m  
private int[] queue; i8#:y`ai  
]H<}6}Gd  
public int get() { v|@EuN14<  
return queue[1]; 3ik~PgGoKQ  
} w BoP&l  
&gI*[5v  
public void remove() { k4` %.;  
SortUtil.swap(queue,1,size--); *|gl1S  
fixDown(1); fVi[mH0=+  
} =p dLh  
file://fixdown |\)Y,~;P  
private void fixDown(int k) { S$a.8Xh  
int j; 4~hP25q  
while ((j = k << 1) <= size) { shiw;.vR{B  
if (j < size %26amp;%26amp; queue[j] j++; 7Q~$&G  
if (queue[k]>queue[j]) file://不用交换 =>O{hT ^F  
break; G\(*z4@Gz  
SortUtil.swap(queue,j,k); MFipXE!  
k = j; eu//Q'W  
} g+xcKfN{  
} w,X J8+B  
private void fixUp(int k) { om6`>I*  
while (k > 1) { !P6?nS  
int j = k >> 1; >xXq:4l>}  
if (queue[j]>queue[k]) Ym$`EN  
break; !yz3:Yzu  
SortUtil.swap(queue,j,k); kc2 8Q2  
k = j; 2/x~w~3U  
} EEvi_Z932  
} Ij9=J1c4  
fr8';Jm  
} #(Yd'qKo  
xX8 c>p  
} 8L`wib2  
\\Z?v,XsS  
SortUtil: yz)Nco]  
_Ecs{'k  
package org.rut.util.algorithm; Hdjp^O!  
upq3)t_  
import org.rut.util.algorithm.support.BubbleSort; f+Fzpd?wS  
import org.rut.util.algorithm.support.HeapSort; C\ 34R  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8/~@3-9EK  
import org.rut.util.algorithm.support.ImprovedQuickSort; -:Q"aeC5  
import org.rut.util.algorithm.support.InsertSort; dx.Jv/Mb  
import org.rut.util.algorithm.support.MergeSort; BM87f:d  
import org.rut.util.algorithm.support.QuickSort; D<[kbt 5^7  
import org.rut.util.algorithm.support.SelectionSort; .4y44: T  
import org.rut.util.algorithm.support.ShellSort; X& XD2o"rt  
P|a|4Bb+fW  
/** hl8oE5MU  
* @author treeroot ]=Wq&~  
* @since 2006-2-2 ?` 2z8uD/  
* @version 1.0 G420o}q  
*/ V)I Tk \  
public class SortUtil { |w>d]eA5  
public final static int INSERT = 1; &7eN EA  
public final static int BUBBLE = 2; cxIAI=JK  
public final static int SELECTION = 3; HYNpvK  
public final static int SHELL = 4; ^Jc|d,u;s  
public final static int QUICK = 5; ( ;KTV*1  
public final static int IMPROVED_QUICK = 6; t*-_MG  
public final static int MERGE = 7; O`;o"\P<  
public final static int IMPROVED_MERGE = 8; ,X\qlT5C  
public final static int HEAP = 9;  o%$R`;  
|"}rC >+  
public static void sort(int[] data) { _iu^VK,}  
sort(data, IMPROVED_QUICK); `b_n\pf ]  
} _A=i2?g  
private static String[] name={ ]'z 5%'  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :S+Bu*OyH  
}; d\tA1&k71  
c7R6.T  
private static Sort[] impl=new Sort[]{ Zy>y7O(,  
new InsertSort(), PE6ZzxR|U<  
new BubbleSort(), u>V~:q\X  
new SelectionSort(), Bey9P)_Of  
new ShellSort(), F*y7 4j,  
new QuickSort(), cq$ _$jRx  
new ImprovedQuickSort(), ~;oaW<"  
new MergeSort(), fhro"5/4  
new ImprovedMergeSort(), T t$] [  
new HeapSort() zOis}$GR  
}; mD,fxm{G  
B06W(y,3Q>  
public static String toString(int algorithm){ I8\R7s3  
return name[algorithm-1]; ~vMJ?P@  
} RVr5^l;"  
=V:Al   
public static void sort(int[] data, int algorithm) { t1!>EI`  
impl[algorithm-1].sort(data); 5W09>C>OC  
} -s 7a\H{~  
4@Bl 1b[<  
public static interface Sort { W O'nW  
public void sort(int[] data); 0 .ck!"h}  
} z:A_  
HzAw rC  
public static void swap(int[] data, int i, int j) { iz27yXHZ~  
int temp = data; ^a7a_M  
data = data[j]; O*>`md?MH  
data[j] = temp; Dt'bbX'edw  
} d}@n,3  
} [*r=u[67F  
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3+5=?,请输入中文答案:八 正确答案:八