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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。 {<''OwQF~+  
插入排序: 7eaA]y~H  
yDu yMt#  
package org.rut.util.algorithm.support; > {'5>6u  
j?d;xj  
import org.rut.util.algorithm.SortUtil; -D&.)N9ctQ  
/** CS^ oiV%{s  
* @author treeroot 1B9Fb.i  
* @since 2006-2-2 }mtC6G41Q  
* @version 1.0 Q2_WH)J 3  
*/ wHB Hkz  
public class InsertSort implements SortUtil.Sort{ CrRQPgl+u  
60U{ e}Mkb  
/* (non-Javadoc) $ uz1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +l[Z2mW  
*/ ShEaL&'J  
public void sort(int[] data) { _G-b L;  
int temp; Ti9:'I  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZTgAZ5_cz  
} ;*<{*6;=?  
} Nf/ hr%jL  
} CA~em_dC  
0x3 h8fs  
} h=i A;B^>  
Xa@ _^oL  
冒泡排序: kb>Vw<NtE  
$ly#zQR  
package org.rut.util.algorithm.support; <ZHY3  
lzr>WbM{{p  
import org.rut.util.algorithm.SortUtil; :$GL.n-?  
RJ=c[nb  
/** wM2)KM}$  
* @author treeroot U 3wsWSO  
* @since 2006-2-2 B4\:2hBq  
* @version 1.0 ]|((b/L3  
*/ [i<$ZP  
public class BubbleSort implements SortUtil.Sort{ _4XoUE\\  
f2R+5`$  
/* (non-Javadoc) do?S,'(g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c|R3,<Q]  
*/ +_-)0[+p  
public void sort(int[] data) { BW;=i.  
int temp; ( TbB?X}  
for(int i=0;i for(int j=data.length-1;j>i;j--){ iaaH9X %  
if(data[j] SortUtil.swap(data,j,j-1); UL@5*uiX  
} L_.xr ?  
} Vx\# +)4  
} C,VqT6E<  
} O_ s9  
b Q9"GO<X  
} Us@ {w`T  
[X$|dOm'N  
选择排序: 1=/MT#d^?  
5w,YBUp  
package org.rut.util.algorithm.support; w7`@=kVx  
p)[ BB6E  
import org.rut.util.algorithm.SortUtil; "$,}|T?Y`  
NBbY## w0  
/** @tjZvRtZ  
* @author treeroot %xbz&'W,  
* @since 2006-2-2 &ls!IN  
* @version 1.0 =?I1V#.  
*/ )l[7;ZIw$  
public class SelectionSort implements SortUtil.Sort { Vbqm]2o&  
1=o(sIeA  
/* 3' :[i2[  
* (non-Javadoc) Bgo"JNM  
* F|n$0vQ*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eqUn8<<s  
*/ Z>MJ0J76]  
public void sort(int[] data) { $V{- @=  
int temp; T0np<l]A  
for (int i = 0; i < data.length; i++) { w'!}(Z5X?  
int lowIndex = i; [r~rIb%Zj  
for (int j = data.length - 1; j > i; j--) { r/s&ee  
if (data[j] < data[lowIndex]) { ''\cBM!  
lowIndex = j; 1 Q0Yer  
} .>gU 9A(Nk  
} hF=V ?\  
SortUtil.swap(data,i,lowIndex); (J,Oh  
} h.s<0.  
} 9B6_eFb  
^v'g~+@o  
} aD2CDu  
8 *(W |J  
Shell排序: R2H\;N  
wHN` - 5%  
package org.rut.util.algorithm.support; B"E(Y M  
 JY050FL  
import org.rut.util.algorithm.SortUtil; Velbq  
,n,7.m.D  
/** ;uWI l  
* @author treeroot <x%my4M  
* @since 2006-2-2 loqS?bC ]  
* @version 1.0 -WHwz m  
*/ \<MTY:  
public class ShellSort implements SortUtil.Sort{ a\.OL}"   
8`LLHX1|  
/* (non-Javadoc) !f]3Riw-=,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J\,e/{,X  
*/ hoD[wAC  
public void sort(int[] data) { 5-QvQ&eH.  
for(int i=data.length/2;i>2;i/=2){ raI~BIfe  
for(int j=0;j insertSort(data,j,i); uwS'*5tU  
} FUTyx"   
} hwol7B>   
insertSort(data,0,1); !PP?2Ax  
} Nm :|C 3_I  
kp &XX|  
/** ?k7/`g U  
* @param data 1 FIiX  
* @param j =ILo`Q~  
* @param i <812V8<!  
*/ &MGgO\|6  
private void insertSort(int[] data, int start, int inc) { Z`1o#yZ  
int temp; D<L{Z[  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); h|/*yTuN.y  
} VT~ ^:-]  
} cB])A57<  
} Sm I8&c  
WZO 0u  
} cJE>;a  
[]fj~hj  
快速排序: W!9f'Yn  
RV@(&eM  
package org.rut.util.algorithm.support; ABYW1K=  
&WWO13\qd  
import org.rut.util.algorithm.SortUtil; 9{J8q  
~[X:twidkL  
/** t-ReT_D|;  
* @author treeroot &)'kX  
* @since 2006-2-2 '`A67bdq)  
* @version 1.0 %^@0tT  
*/ Fb4S /_ V  
public class QuickSort implements SortUtil.Sort{ -){^ Q:u  
oIR%{`3"I  
/* (non-Javadoc) 58gt*yVu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vH\nL>r  
*/ Z.Y8z#[xg  
public void sort(int[] data) { Zo6a_`)d  
quickSort(data,0,data.length-1); ^J=txsx  
} sAAIyPJts  
private void quickSort(int[] data,int i,int j){ ewlc ^`  
int pivotIndex=(i+j)/2; Q^5 t]HKn  
file://swap xx2:5  
SortUtil.swap(data,pivotIndex,j); 9Qm{\  
' xq5tRg>  
int k=partition(data,i-1,j,data[j]); cngPc]?N  
SortUtil.swap(data,k,j); 9(Xch2tpO!  
if((k-i)>1) quickSort(data,i,k-1); Fl(ZKpSZU  
if((j-k)>1) quickSort(data,k+1,j); 5TW<1'u  
$G([#N<  
} gmH0-W)=  
/** HE .Dl7 {  
* @param data p.7p,CyB  
* @param i RPqn#B  
* @param j ZFw743G  
* @return HOI`F3#XI  
*/ KE1@z]  
private int partition(int[] data, int l, int r,int pivot) { ]tV{#iIJ*  
do{ *xNjhR]7v  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); HDG"a&$   
SortUtil.swap(data,l,r); FQ&VM6_  
} SxQDqoA~  
while(l SortUtil.swap(data,l,r); ;@\J scNJ|  
return l; x~,?Zj)n?C  
} ll^O+>1dO  
e/I{N0SR  
} o~N-x*   
`-e}:9~q  
改进后的快速排序: IaqN@IlWb  
6E%k{ r  
package org.rut.util.algorithm.support; #Yb9w3N  
*wl_8Sis}  
import org.rut.util.algorithm.SortUtil; r,@|Snv)  
t#Yh!L6>  
/** S^_yiV S  
* @author treeroot lk'jBl%  
* @since 2006-2-2 Zl/+HU~  
* @version 1.0 z>#$#:Z4  
*/ ,(b~L<zN&  
public class ImprovedQuickSort implements SortUtil.Sort { Z?[J_[ZtR3  
Xst}tz62F  
private static int MAX_STACK_SIZE=4096; +K4v"7C V  
private static int THRESHOLD=10; ^HKaNk<  
/* (non-Javadoc) _'v )Fy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V^H47O;VC  
*/ 9GOyVKUv  
public void sort(int[] data) { _C\ d^a (  
int[] stack=new int[MAX_STACK_SIZE]; Xq$0% WjG  
c=mFYsSv  
int top=-1; oO,p.X%  
int pivot; q"vT]=Y}:  
int pivotIndex,l,r; h v+i{Z9!]  
438> )=  
stack[++top]=0; _e^V\O>  
stack[++top]=data.length-1; C'"6@-~  
;L{y3CWT  
while(top>0){ $9b6,Y_-  
int j=stack[top--]; Yhdt8[ 2  
int i=stack[top--]; :njUaMFoMA  
%[;KO&Ga  
pivotIndex=(i+j)/2; gKEvgXOj  
pivot=data[pivotIndex]; V3nv5/6  
7[,f;zG  
SortUtil.swap(data,pivotIndex,j); unB "dE  
XX+rf  
file://partition 'Pn`V{a  
l=i-1; W# /Ol59  
r=j; F.w#AV  
do{ ,*#M%Pv1t  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); z(a:fL{/XG  
SortUtil.swap(data,l,r); g7ROA8xu  
} P,], N)  
while(l SortUtil.swap(data,l,r); D{}\7qe  
SortUtil.swap(data,l,j); &Vm[5XW  
.5zJ bZ9  
if((l-i)>THRESHOLD){ ;]e"bX  
stack[++top]=i; V)@scB|>,  
stack[++top]=l-1; N($]))~3&  
} =sJHnWL[  
if((j-l)>THRESHOLD){ [C#pMLp,~  
stack[++top]=l+1; =1uI >[aN  
stack[++top]=j; Np)!23 "  
} {RO=4ba{J  
&}?e:PEy  
} n[7zK'%Dxg  
file://new InsertSort().sort(data); YLr2j 7  
insertSort(data); ^u<+tV   
} XP1_{\  
/** r-uIFhV^  
* @param data g==^ioS}*  
*/ ZaV@}=Rd8  
private void insertSort(int[] data) { w|ei*L  
int temp; my0->W%L  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c }cboe2  
} <;K/Yv'{r  
} EORAx  
} w, wt<@}  
WNi<|A#T{  
}  #pK)  
Sn,z$-;h;  
归并排序: Rx<F^J  
(x!bZ,fu  
package org.rut.util.algorithm.support; P$yJA7]j;%  
e4P.G4  
import org.rut.util.algorithm.SortUtil; gA*zFhGVS7  
kDQXP p  
/** cke[SUH,  
* @author treeroot "+60B0>sc  
* @since 2006-2-2 e76)z; '  
* @version 1.0 )}8%Gs4C  
*/ _JXE/  
public class MergeSort implements SortUtil.Sort{ /J:j'6  
>?V->7QLP  
/* (non-Javadoc) _!D$Aj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ky|0IKE8Z  
*/ |szfup~5es  
public void sort(int[] data) { VN;M;fMs  
int[] temp=new int[data.length]; u,q#-d0g;  
mergeSort(data,temp,0,data.length-1); )c/BD C7g  
} tIw4V^'|  
H9?~#GPb  
private void mergeSort(int[] data,int[] temp,int l,int r){ cR} =3|t  
int mid=(l+r)/2; ~+hG}7(:  
if(l==r) return ; wz=I+IN:  
mergeSort(data,temp,l,mid); Gz:a1-x  
mergeSort(data,temp,mid+1,r); S7*:eo  
for(int i=l;i<=r;i++){ [%y D,8  
temp=data; [d}1Cq=_  
} r+crE %-  
int i1=l; #wfR$Cd  
int i2=mid+1; ;'kH<Iq  
for(int cur=l;cur<=r;cur++){ d0d2QRX  
if(i1==mid+1) YVi]f2F%  
data[cur]=temp[i2++]; NgKNT}JDv  
else if(i2>r) o=}?aC3I  
data[cur]=temp[i1++]; ho. a93  
else if(temp[i1] data[cur]=temp[i1++]; 4{=Em5`HbO  
else M9nYt~vHX  
data[cur]=temp[i2++]; o^_am>h  
} jLg4_N1SD  
} G.8ZISN/  
W:G*t4i  
} R<U <Y'Y  
-q27N^A0  
改进后的归并排序: Ym 6[~=~EK  
|BR&p)7)  
package org.rut.util.algorithm.support; ~yV0SpL  
[LK 9^/V  
import org.rut.util.algorithm.SortUtil; 3yDvr*8-@  
j<u`W|vl  
/** _'Z@ < ,L  
* @author treeroot f32nO  
* @since 2006-2-2 r=;k[*;{  
* @version 1.0 M*Xzr .6  
*/ BH^q.p_#>X  
public class ImprovedMergeSort implements SortUtil.Sort { V Puzu|  
\} 5\^&}_  
private static final int THRESHOLD = 10; Wk?XlCj  
nBd;d}LD  
/* Cb<\  
* (non-Javadoc) F/h)azcn  
* Z q)A"'Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bs*s8}6  
*/ 8in8_/x  
public void sort(int[] data) { rQF%;  
int[] temp=new int[data.length]; :HC{6W`$  
mergeSort(data,temp,0,data.length-1); q :gH`5N  
} >*&[bW'}?  
/$E1!9J  
private void mergeSort(int[] data, int[] temp, int l, int r) { %O-wMl  
int i, j, k; G7u7x?E:B`  
int mid = (l + r) / 2; 0X;Dr-3<  
if (l == r) xM(  
return; G 8@%)$A  
if ((mid - l) >= THRESHOLD) F-m1GG0s  
mergeSort(data, temp, l, mid); e2>gQ p/  
else 6xwC1V?:0t  
insertSort(data, l, mid - l + 1); TA*49Qp  
if ((r - mid) > THRESHOLD) 'sC{d&c  
mergeSort(data, temp, mid + 1, r); LYT0 XB)A  
else 'yl`0,3wV  
insertSort(data, mid + 1, r - mid);  -H{{  
B; ~T|exu  
for (i = l; i <= mid; i++) { z[B7k%}  
temp = data; YS9|J=!~  
} D .E>Y  
for (j = 1; j <= r - mid; j++) { {"s8X(#_sC  
temp[r - j + 1] = data[j + mid]; 7J\I%r  
} H|P.q{(G  
int a = temp[l]; wx<DzC  
int b = temp[r]; [e (-  
for (i = l, j = r, k = l; k <= r; k++) { 3=z'Ih`  
if (a < b) { ,%u\2M  
data[k] = temp[i++]; |yS4um(w  
a = temp; |m~|  
} else { 0@2%pIq\  
data[k] = temp[j--]; ]C_6I\Z#=W  
b = temp[j]; 18~j>fN  
} 'O CVUF,  
} U^.$k-|k  
} Fik*7!XQ8  
;kdJxxUox  
/** b8O:@j2  
* @param data JAYom%A"  
* @param l +K&ze:-Z  
* @param i MYu-[Hg  
*/ % L]xar  
private void insertSort(int[] data, int start, int len) { w$1.h'2  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $uboOfS83G  
} 7#Mi`W  
} ]itvu:pl%  
} UJO+7h'  
} <w[)T`4N  
"w N DjWv  
堆排序: !r$/-8b  
oo`mVRVf  
package org.rut.util.algorithm.support; /@q_`tU  
$L(,q!DvH  
import org.rut.util.algorithm.SortUtil; T. {P}#'|  
}V 09tK/M  
/** WFTTBUoH  
* @author treeroot <[(xGrEZV  
* @since 2006-2-2 )U5AnL  
* @version 1.0 Dp>/lkk.  
*/ V<1dA\I"  
public class HeapSort implements SortUtil.Sort{ LqW~QEU(  
\SyfEcSf2v  
/* (non-Javadoc) nlh%O@,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?'^xO:  
*/ 7&2xUcsz)  
public void sort(int[] data) { pj'Yv  
MaxHeap h=new MaxHeap(); ="MG>4j3.F  
h.init(data); zvE]4}VL?  
for(int i=0;i h.remove(); n{|~x":9V  
System.arraycopy(h.queue,1,data,0,data.length); :[! rj  
} r"^P>8  
i9$ -lk  
private static class MaxHeap{ Nq-qks.&  
>[NNu Y~  
void init(int[] data){ ZM0vB% M|  
this.queue=new int[data.length+1]; "H6DiPh.E  
for(int i=0;i queue[++size]=data; .F |yxj;I7  
fixUp(size); @N34 Q-l  
} ho 4~-xmN  
} . F_pP2A  
0D=6-P?^W  
private int size=0; F@[l&`7  
(|<}q-wO  
private int[] queue; G3m+E;o1  
zGA#7W2?0  
public int get() { Ak&eGd$d  
return queue[1]; h ~v8Q_6  
} 90 (JP-  
`N;JM3 ck  
public void remove() { 1InG%=jLo  
SortUtil.swap(queue,1,size--); Ea 0 j}  
fixDown(1); o#CNr5/  
} 7iT#dpF/A  
file://fixdown RWK|?FD\<  
private void fixDown(int k) {  9/`T]s"  
int j; W A-\2  
while ((j = k << 1) <= size) { 'jqkDPn  
if (j < size %26amp;%26amp; queue[j] j++; .*i.Z   
if (queue[k]>queue[j]) file://不用交换 l.El3+  
break; (6!W8x7  
SortUtil.swap(queue,j,k); !np-Jmi  
k = j; L~=h?C<  
} c#Y/?F2p  
} PIl:z?q({  
private void fixUp(int k) { ~}+F$&  
while (k > 1) { gM&XVhQJ\  
int j = k >> 1; *i?#hTw  
if (queue[j]>queue[k]) 9n%vz@X  
break; XC%u`UG  
SortUtil.swap(queue,j,k); l*^c?lp)  
k = j; u8 Q`la  
} M:rE^El  
} &( aw  
/{|JQ'gqX  
} ZuH@qq\  
6C7|e00v  
} <>%2HRn<u  
M*<Ee]u  
SortUtil: AhWcJD]  
[2ez"4e  
package org.rut.util.algorithm; ~x4]^XS  
bdbTK8-  
import org.rut.util.algorithm.support.BubbleSort; t}w<xe  
import org.rut.util.algorithm.support.HeapSort; b9X"p*'p  
import org.rut.util.algorithm.support.ImprovedMergeSort; b8@?fC+tm  
import org.rut.util.algorithm.support.ImprovedQuickSort; gw O]U=Y  
import org.rut.util.algorithm.support.InsertSort; n|q $=jE  
import org.rut.util.algorithm.support.MergeSort; clyZD`*  
import org.rut.util.algorithm.support.QuickSort; _<}oBh  
import org.rut.util.algorithm.support.SelectionSort; n.F^9j+V  
import org.rut.util.algorithm.support.ShellSort; K+|G9  
lsq\CavbM  
/** L.X"wIs^  
* @author treeroot wN Mf-~  
* @since 2006-2-2 Qa>t$`o`  
* @version 1.0 21_sg f?  
*/ &!N9.e:-]  
public class SortUtil { %0&59q]LM  
public final static int INSERT = 1; J;wDvt]]1  
public final static int BUBBLE = 2; YMXhzqj  
public final static int SELECTION = 3; @^R6}qJ  
public final static int SHELL = 4; NAgm?d  
public final static int QUICK = 5; ecvQEK2L  
public final static int IMPROVED_QUICK = 6; ;iq H:wO  
public final static int MERGE = 7; {0?^$R8j  
public final static int IMPROVED_MERGE = 8; \3q Z0  
public final static int HEAP = 9; #l 7(W G  
!A":L0[7n  
public static void sort(int[] data) { &Zy%Zz  
sort(data, IMPROVED_QUICK); rJtpTV@.  
} s`#g<_{X  
private static String[] name={ jEu-CU#:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" o&-D[|E|  
}; <!;NJLe`  
r?7tI0  
private static Sort[] impl=new Sort[]{ {?X:?M_  
new InsertSort(), \l-JU  
new BubbleSort(), `?=Y^+*!-  
new SelectionSort(), *{<46 0`!q  
new ShellSort(), wDp5HZ>  
new QuickSort(), 0H!J  
new ImprovedQuickSort(), -RI&uFqOI  
new MergeSort(), :yxP3e%rp  
new ImprovedMergeSort(), b,hRk1  
new HeapSort() xlIVLv6dO  
}; dj-/%MU  
*jCHv  
public static String toString(int algorithm){ &a8%j+j  
return name[algorithm-1]; zt!)7HBo  
} =W[M=_0u  
~`yO@f;D  
public static void sort(int[] data, int algorithm) { T0|hp7WM  
impl[algorithm-1].sort(data); kltorlH  
} ,76Q*p  
^i[bo3  
public static interface Sort { ,4mb05w;d  
public void sort(int[] data); F rd>+   
} tf IUH'Ez>  
SiLWy=qbR  
public static void swap(int[] data, int i, int j) { YgV"*~  
int temp = data; t9~Y ?  
data = data[j]; s7?d_+O  
data[j] = temp; # KUN ZW  
} XcFu:B  
} weH;,e*r  
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3+5=?,请输入中文答案:八 正确答案:八