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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@J<*k  
插入排序: 0HuRFl  
A.x}%v,E  
package org.rut.util.algorithm.support; v]SE?xF{U  
Y"rV[oe   
import org.rut.util.algorithm.SortUtil; !;!~5"0~"  
/** +5|nCp6||j  
* @author treeroot i/Lq2n3 )  
* @since 2006-2-2 {,2_K6#  
* @version 1.0 EAXU{dRV  
*/ Jl4XE%0  
public class InsertSort implements SortUtil.Sort{ v!hs~DnUZ  
mqT0^TNPcl  
/* (non-Javadoc) LA%al @  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T`{MQ:s  
*/ et}Y4,:  
public void sort(int[] data) { |(v=1#i  
int temp; v4~Xv5|w^F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _W@Fk)E6N  
} rw0lXs#K<E  
} aDv/kFfn  
} -mw \?\2{  
D % ,yA  
} &B0&183  
)&!@O$RS8(  
冒泡排序: KY&,(z   
D\*_ulc]  
package org.rut.util.algorithm.support; v+bjC  
I/V#[KC  
import org.rut.util.algorithm.SortUtil; q0Lt[*q3R  
VCRv(Ek  
/** B^Mtj5Oc  
* @author treeroot :!!`!*!JH  
* @since 2006-2-2 !TZ/PqcE  
* @version 1.0  CyDf[C)=  
*/ 7[0k5-  
public class BubbleSort implements SortUtil.Sort{ [E1|jcmQ  
Z9~Wlt'?  
/* (non-Javadoc) [F{a-i-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z9O/MHT[w  
*/ H).5xx[`  
public void sort(int[] data) { ;iNx@tz4  
int temp; x%ag.g2I  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <X&:tZ #/  
if(data[j] SortUtil.swap(data,j,j-1); k 0Yixa  
} `b'J*4|oGo  
} pAmI ](  
} 3Dvk oV  
} )'|W[Sh?  
%GiO1:t  
} $%8n,FJ[  
\9zC?Cw  
选择排序: yP]W\W'  
OBQ!0NM_b  
package org.rut.util.algorithm.support; >*xzSd? \  
iquGLwJ  
import org.rut.util.algorithm.SortUtil; ^V]DY!@k3_  
]3jH^7[?  
/** { F8,^+b|  
* @author treeroot "*\3.`Kd  
* @since 2006-2-2 f(o`=% k8  
* @version 1.0 6WM_V9Tidq  
*/ JjML!;  
public class SelectionSort implements SortUtil.Sort { B4O a7$M/U  
=@XR$Uud6  
/* }"H900WE|  
* (non-Javadoc) )pa|uH +N  
* d's`~HOU2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *3Z#r  
*/ xTm&`Xo  
public void sort(int[] data) { u5M{s;{11r  
int temp; x[6Bc  
for (int i = 0; i < data.length; i++) { v"_#.!V  
int lowIndex = i; @sO.g_yM  
for (int j = data.length - 1; j > i; j--) { Z@A1+kUS  
if (data[j] < data[lowIndex]) { ~J:lC u  
lowIndex = j; !Sh5o'D28  
} 0N_Da N  
} HbVm O]#$D  
SortUtil.swap(data,i,lowIndex); OXV@LYP@  
} k]5L\]>y  
} sH: &OaA  
Ve) :I  
} h(sKGCG  
n\9*B##  
Shell排序: n(VMGCZPV  
Ooy96M~_G  
package org.rut.util.algorithm.support; 6mLE-( Z7  
<P- r)=^  
import org.rut.util.algorithm.SortUtil; K\Q 1/})  
ohk =7d.'  
/** f` J"A:  
* @author treeroot ,DLNI0uV  
* @since 2006-2-2 ')RK(I  
* @version 1.0 8, ^UQ5x  
*/ 7IH{5o\e  
public class ShellSort implements SortUtil.Sort{ q[K)bg{HB  
m:CpDxzbf  
/* (non-Javadoc) SUhP e+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tjt#VFq?  
*/ m#'9)%t!J  
public void sort(int[] data) { !/j|\_O  
for(int i=data.length/2;i>2;i/=2){ -E"o)1Pj6C  
for(int j=0;j insertSort(data,j,i); A???s,F_  
} 6j#5Ag:  
}  I9 m  
insertSort(data,0,1); q1Mk_(4oJ  
} i%w'Cs0y  
+ P.Ir  
/** ;ecF~-oku  
* @param data uESHTX/[  
* @param j n1h+`nsf  
* @param i |lY8u~%  
*/ -tZb\4kh  
private void insertSort(int[] data, int start, int inc) { F$C:4c  
int temp; C%"@|01cO  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]d FWIvC  
} 8nM]G4H.f  
} Jo]g{GX[  
} n2~rrQ \/p  
UqbE  
} #D8)rs.9  
)DMbO"7  
快速排序: 3{z }[@N  
><HXd+- sd  
package org.rut.util.algorithm.support; _qfdk@@g  
s!Vtw p9  
import org.rut.util.algorithm.SortUtil; ~Tolz H!  
UQ y+ &;#5  
/** anYZ"GR+  
* @author treeroot w:Vs$,  
* @since 2006-2-2 e2v,#3Q\  
* @version 1.0 >n/QKFvV5  
*/ +H_Z!T.@  
public class QuickSort implements SortUtil.Sort{ nS#;<p$\  
X8<ygci+.5  
/* (non-Javadoc) TkykI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) = 8n*%NC  
*/ =n!8>8d  
public void sort(int[] data) { h 9/68Gc?6  
quickSort(data,0,data.length-1); )erPp@  
} DpAuI w7|  
private void quickSort(int[] data,int i,int j){ 5k@ k  
int pivotIndex=(i+j)/2; JdnZY.{S0  
file://swap 3[$VW+YV  
SortUtil.swap(data,pivotIndex,j); EP @=i  
hLF@'ln  
int k=partition(data,i-1,j,data[j]); LT!4pD:a  
SortUtil.swap(data,k,j); q#1um @m3  
if((k-i)>1) quickSort(data,i,k-1); 5UqCRz<,R  
if((j-k)>1) quickSort(data,k+1,j); Z|.. hZG  
XOoND  
} (1R,   
/** 99x]DY  
* @param data x<].mx  
* @param i SVJ3!1B,  
* @param j *|cvx:GO  
* @return \y=,=;yv  
*/ e_e|t>nQ  
private int partition(int[] data, int l, int r,int pivot) { cuHs`{u@P  
do{ y}|zH  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +VfJ: [q  
SortUtil.swap(data,l,r); DvGtO)5._  
} %PQC9{hUy$  
while(l SortUtil.swap(data,l,r); H$ v4N8D8I  
return l; SU1, +7"  
} 7@ZL(G  
/3fo=7G6  
} k0,~wn\#h  
!Bd2$y.  
改进后的快速排序: /[mCK3_  
Q8O38uZ  
package org.rut.util.algorithm.support; *+iWB_  
[@(zGb8  
import org.rut.util.algorithm.SortUtil; |h;MA,qva  
FD8aO?wvg  
/** ='f>p+*c%  
* @author treeroot nWh?zf#{  
* @since 2006-2-2 uE>}>6)b  
* @version 1.0 tG6 o^  
*/ M@.1P<:h  
public class ImprovedQuickSort implements SortUtil.Sort { 5D'8 l@7  
A ="h}9ok  
private static int MAX_STACK_SIZE=4096; JprZ6 >  
private static int THRESHOLD=10; jtA Yp3M-$  
/* (non-Javadoc) n '&WIf3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) St?vd+(>  
*/ h/X),aK3  
public void sort(int[] data) { aJ2-BRn  
int[] stack=new int[MAX_STACK_SIZE]; }[1I_)  
j1g^Q$B>m  
int top=-1; -7lJ  
int pivot; dJ$}]   
int pivotIndex,l,r; }/6jom9U?  
~-,<`VY  
stack[++top]=0; (2S,0MHk  
stack[++top]=data.length-1; O32:j   
(FBKP#x)^  
while(top>0){ 7Y_S%B:F  
int j=stack[top--]; _M 7AQ5  
int i=stack[top--]; YoXXelO&  
upWq=_  
pivotIndex=(i+j)/2;  B} :[~R'  
pivot=data[pivotIndex]; \jC}>9  
4Vt YR  
SortUtil.swap(data,pivotIndex,j); yNO5h]o  
Y40{v(Pi  
file://partition >%xJ e'  
l=i-1; J^u8d?>r  
r=j; @o8\`G  
do{ .L8S_Mz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _m@QeO'yh  
SortUtil.swap(data,l,r); K'y;j~`-  
} jn]{|QZ  
while(l SortUtil.swap(data,l,r); z}Xn>-N-  
SortUtil.swap(data,l,j); ?g!py[CrE  
l( "_JI  
if((l-i)>THRESHOLD){ h!$W^Tm2g  
stack[++top]=i; )wAqaG_d  
stack[++top]=l-1; x3]es"4Q  
} ]zu" x9-`  
if((j-l)>THRESHOLD){ -\LB>\;qn  
stack[++top]=l+1; ;]|Z8#s  
stack[++top]=j; )t =Cj?5  
} G<$UcXg  
JGJQ5zt  
} =6/0=a[  
file://new InsertSort().sort(data); afH`<!  
insertSort(data); %U'YOE6  
} b{9q   
/** U nGG%  
* @param data 53#7Yy  
*/ P#6y  
private void insertSort(int[] data) { 0F)Y[{h<  
int temp; \9!W^i[+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,xNuc$8Jd  
} p1CY?K  
} 5PG%)xff*  
} fH>]>2fS  
jg#%h`  
} lQldW|S>  
$TWt[  
归并排序: :FB#,AOa_  
CpO!xj +  
package org.rut.util.algorithm.support; uEH&]M>d_  
Rm{S,  
import org.rut.util.algorithm.SortUtil; EG2NE,,r  
eQNo'cz  
/** UV$v:>K#  
* @author treeroot 5nQ*%u\$Z  
* @since 2006-2-2 byoDGUv  
* @version 1.0 [P407Sa"  
*/ 6I"Q9(  
public class MergeSort implements SortUtil.Sort{ |lrLTI^a  
B<x)^[<v  
/* (non-Javadoc) k~h'`(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A2!7a}*1(  
*/ \-gZ_>)  
public void sort(int[] data) { 1W;q(#q  
int[] temp=new int[data.length]; `A])4q$  
mergeSort(data,temp,0,data.length-1); j!xt&t4D  
} b&. o9PV"  
/X {:~*.z  
private void mergeSort(int[] data,int[] temp,int l,int r){ 6MqJy6  
int mid=(l+r)/2; \|RP-8  
if(l==r) return ; LS*^TA(I[  
mergeSort(data,temp,l,mid); E$T)N U\  
mergeSort(data,temp,mid+1,r); Op A  
for(int i=l;i<=r;i++){ aovRm|aOo'  
temp=data; }>>lgW>n,;  
} P'xq+Q  
int i1=l; ojni+}>_  
int i2=mid+1; 9;NR   
for(int cur=l;cur<=r;cur++){ *^ g7kCe(  
if(i1==mid+1) T]Pp\6ff  
data[cur]=temp[i2++]; ORD@+ {  
else if(i2>r) 5v<BB`XWp  
data[cur]=temp[i1++]; _0<qS{RW  
else if(temp[i1] data[cur]=temp[i1++]; XOAZ  
else .A//Q|ot!  
data[cur]=temp[i2++]; <:fjWy  
} dnSjXyjFB  
} Ni7~ Mjjt  
"WV]| TS"]  
} q4C$-W%rj  
HNu/b)-Rb  
改进后的归并排序: sFqZ@t}~  
!7]4sXL{  
package org.rut.util.algorithm.support; % V/J6  
]W-l1  
import org.rut.util.algorithm.SortUtil; P33x/#VVE  
u(S~V+<@Z  
/** v `9IS+Z  
* @author treeroot Zu951+&`  
* @since 2006-2-2 "JzQCY^C  
* @version 1.0 ?kMG!stgp}  
*/ iqW T<WY  
public class ImprovedMergeSort implements SortUtil.Sort { l:5x*QSX  
*"2TT})   
private static final int THRESHOLD = 10; l_Mi'}j  
.gh3"  
/* L}7c{6!F7  
* (non-Javadoc) N&n2\Y  
* /~Zxx}<;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hosw :%  
*/ ,#@B3~giC  
public void sort(int[] data) { : z*OAl"  
int[] temp=new int[data.length]; t>:2F,0K9  
mergeSort(data,temp,0,data.length-1); c4E=qgP  
} cD{I*t$  
a*@ 6G  
private void mergeSort(int[] data, int[] temp, int l, int r) { f^z/s6I0  
int i, j, k; S4508l  
int mid = (l + r) / 2; _1S^A0ft  
if (l == r) t`1E4$Bb\  
return; C%}}~Y  
if ((mid - l) >= THRESHOLD) gh>'O/9  
mergeSort(data, temp, l, mid); )>abB?RZ  
else :yO.Te F  
insertSort(data, l, mid - l + 1); u^&2T(xG i  
if ((r - mid) > THRESHOLD) P]hS0,sE<(  
mergeSort(data, temp, mid + 1, r); h)2W}p{a4=  
else }c?/-ab>  
insertSort(data, mid + 1, r - mid); #&a-m,Y$sx  
9 &a&O Z{  
for (i = l; i <= mid; i++) { {fW(e?8)  
temp = data; /X>Fn9 mM  
} Pi7vuOJr8  
for (j = 1; j <= r - mid; j++) { pV bgjJI  
temp[r - j + 1] = data[j + mid]; W=fs"<  
} G41 gil6k  
int a = temp[l]; [9| 8p$  
int b = temp[r]; {eo4J&as  
for (i = l, j = r, k = l; k <= r; k++) { N'[bA  
if (a < b) { jp?;8rS3  
data[k] = temp[i++]; *<Yn  
a = temp; /<,LM8n  
} else { @LZ'Qc }@  
data[k] = temp[j--]; O CIWQ/ P  
b = temp[j]; Vf<VKP[9K  
} QwPL y O  
} .4DX/~F  
} (:v|(Gn/  
Qvo(2(  
/** O&h3=?O&B  
* @param data "e4;xU-  
* @param l p(dJf&D  
* @param i *;b.x"  
*/ z9OhY]PPF  
private void insertSort(int[] data, int start, int len) { g#b[-)Qx  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); r:Uqtqxh  
} /;>U0~K  
} K8xwPoRL  
} G&8)5d[  
} KZ_d..l*W  
,Yx"3i,  
堆排序: L7oLV?k  
jzCSxuZ7O  
package org.rut.util.algorithm.support; 2 |lm'Hf  
U,Py+c6  
import org.rut.util.algorithm.SortUtil; Teq1VK3Hr  
CFdR4vuEI  
/** a![x^@nF  
* @author treeroot *9V;;bY#  
* @since 2006-2-2 ~gU.z6us  
* @version 1.0 >b9nc\~  
*/ ]*b}^PQM^  
public class HeapSort implements SortUtil.Sort{ )Lt|]|1B{  
)\fAy  
/* (non-Javadoc) Zq wxi1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #lDf8G|ST~  
*/ "o" ujQ(v  
public void sort(int[] data) { \z'A6@  
MaxHeap h=new MaxHeap(); []B9Me  
h.init(data); 1HOYp*{#wP  
for(int i=0;i h.remove(); R1$O)A}k  
System.arraycopy(h.queue,1,data,0,data.length); ;e~Z:;AR  
} i=67  
7g@P$e]  
private static class MaxHeap{ 2p'ujAK  
*a }NRf}W  
void init(int[] data){ pZ4]K xX@  
this.queue=new int[data.length+1]; ' *hy!f]  
for(int i=0;i queue[++size]=data; LvP{"K;   
fixUp(size); |KSd@   
} Fh  t$7V  
} 2(SK}<X  
MR8\'0]  
private int size=0; z@@w?>*  
Lbb{z  
private int[] queue; K5X,J/n  
O7r<6(q(  
public int get() { 9[.vtk\iyH  
return queue[1]; a3}#lY):  
} GMc{g  
|.kYomJ   
public void remove() { Hj&mwn]  
SortUtil.swap(queue,1,size--); pPr/r& r  
fixDown(1); rHhn)m  
} ] Tc!=SV  
file://fixdown H"v3?g`S%  
private void fixDown(int k) { oq00)I1  
int j; \;w$"@9  
while ((j = k << 1) <= size) { ^H]q[XFR  
if (j < size %26amp;%26amp; queue[j] j++; )C>4? )  
if (queue[k]>queue[j]) file://不用交换 r8PXdNg  
break; ;uw`6 KJ  
SortUtil.swap(queue,j,k); wk @-O}W  
k = j; ~~J xw ]  
} &+t! LM  
} w.s-T.5.j  
private void fixUp(int k) { ~pM\]OC  
while (k > 1) { _"BYnPq@wb  
int j = k >> 1; {O\>"2}m'f  
if (queue[j]>queue[k]) ?,Z[)5 ZN  
break; xDRNtLj<u  
SortUtil.swap(queue,j,k); ;Y:_}kN8_  
k = j; c,WRgXL  
} P}=u8(u  
} ]7H ?  
&S\q*H=}i  
} @WcK<Qho  
(W*~3/@D  
} {\tHS+]  
CH |A^!Zm  
SortUtil: OGmOk>_  
:4o08M%  
package org.rut.util.algorithm; i={ :6K?^  
q:OSQ~U_  
import org.rut.util.algorithm.support.BubbleSort; h@nNm30i  
import org.rut.util.algorithm.support.HeapSort; w h4WII  
import org.rut.util.algorithm.support.ImprovedMergeSort; $L|YllD%  
import org.rut.util.algorithm.support.ImprovedQuickSort; $i# 1<Qj  
import org.rut.util.algorithm.support.InsertSort; | CNsa  
import org.rut.util.algorithm.support.MergeSort; k+*DPo@)  
import org.rut.util.algorithm.support.QuickSort; V*an0@  
import org.rut.util.algorithm.support.SelectionSort; SSi-Z  
import org.rut.util.algorithm.support.ShellSort; ~(%TQY5  
'G3;!xk$  
/** :\ %.x3T'  
* @author treeroot 6U{&`8C  
* @since 2006-2-2 IfyyA  
* @version 1.0 <@;Y.76~  
*/ M>Y ge~3  
public class SortUtil { 1$cX` D`  
public final static int INSERT = 1; [8Zq 1tU;G  
public final static int BUBBLE = 2; RI,Z&kXj2o  
public final static int SELECTION = 3; V{51wnxT  
public final static int SHELL = 4; lZpa)1.tiC  
public final static int QUICK = 5; jY.iQBhjEB  
public final static int IMPROVED_QUICK = 6; 7|~j=,HU+Z  
public final static int MERGE = 7; x --buO  
public final static int IMPROVED_MERGE = 8; Q~/TqG U  
public final static int HEAP = 9; P\"|b\O1  
Kv**(~FNnH  
public static void sort(int[] data) { WU}?8\?U%  
sort(data, IMPROVED_QUICK); 3$YgGum  
} caA>; +aBH  
private static String[] name={ tx-HY<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SoS GQ&k  
}; vo'=d"zm  
o)NQE?  
private static Sort[] impl=new Sort[]{ =M]f7lJ  
new InsertSort(), D@[Mk"f  
new BubbleSort(), _O!)aD  
new SelectionSort(), xRZ9.Agv_  
new ShellSort(), :5/P{Co (  
new QuickSort(), k!/"J ;  
new ImprovedQuickSort(), zP\n<L5  
new MergeSort(), idL6*%M  
new ImprovedMergeSort(), ~b}@*fq  
new HeapSort() 8FY.u{93  
}; c*+yJNm3>  
&_Py{Cv@Dw  
public static String toString(int algorithm){ aL63=y  
return name[algorithm-1]; MMs#Y1dH  
} 3q*y~5&I  
Z<@Kkbj  
public static void sort(int[] data, int algorithm) { <|= UrG  
impl[algorithm-1].sort(data); R#ayN*  
} 3?Ckk{)&  
d8 1u  
public static interface Sort { Aj`zT'  
public void sort(int[] data); kj(Ko{  
} ,3^gB,ka  
0>#or$:6E  
public static void swap(int[] data, int i, int j) { ;g[C=yhK`C  
int temp = data; ?A|8J5E V  
data = data[j]; rDNz<{evj  
data[j] = temp; A?{ X5` y  
} _*b1]<  
} y( M-   
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3+5=?,请输入中文答案:八 正确答案:八