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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。 RN[x\",  
插入排序: 5Ww,vSCV)  
M/9[P* VE  
package org.rut.util.algorithm.support; g}R Cjl4  
#5{xWMp/0  
import org.rut.util.algorithm.SortUtil; "T^%HPif  
/** rCczQ71W  
* @author treeroot ~?fl8RF\  
* @since 2006-2-2 D86F5HT}}  
* @version 1.0 U\qbr.<  
*/ b1i~F45h  
public class InsertSort implements SortUtil.Sort{ <8kCmuGlk  
LA lX |b  
/* (non-Javadoc) >Ovz;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d-e/0F!  
*/ G!I5Er0pdy  
public void sort(int[] data) { G7+{O7  
int temp; z;?jKE p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =>3,]hnep  
} gzSm=6Qw0  
} +6jGU '}[  
} q. Jx|x  
t1mG]  
} u t4:LHF  
K39I j_3  
冒泡排序: /.!&d^  
>yP> ]r+  
package org.rut.util.algorithm.support; 3gVU#T [[  
uE(5q!/  
import org.rut.util.algorithm.SortUtil;  + @f  
_xi &%F/  
/** GBRiU &D  
* @author treeroot /|UbYe,  
* @since 2006-2-2 oPaoQbR(A  
* @version 1.0 +4T.3Njjn  
*/ F}meKc?a  
public class BubbleSort implements SortUtil.Sort{ hrzxc4,W  
^OIo  
/* (non-Javadoc) ^q/^.Gf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,P`GIGvkA  
*/ OGJrwl  
public void sort(int[] data) { +MaEet  
int temp; GeB&S!F  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .-& =\}^2l  
if(data[j] SortUtil.swap(data,j,j-1); Et-|[ eL  
} ps,Kj3^T<  
} zZRLFfz<9  
} t B`"gC~  
}  f-[.^/  
<b _K*]Z  
} sg}<()  
,%xat`d3,3  
选择排序: N2[jBy8M  
@g;DA)!(  
package org.rut.util.algorithm.support; %++: K  
}93FWo.  
import org.rut.util.algorithm.SortUtil; L?0IUGY  
+`Nu0y!rj  
/** <[}zw!z  
* @author treeroot #<m2Xo?d]  
* @since 2006-2-2 %'e$N9zd  
* @version 1.0 B= E/|J</  
*/ 4Y1^ U{A+  
public class SelectionSort implements SortUtil.Sort { Fec4#}|  
^z, B}Nz  
/* S["r @<  
* (non-Javadoc) ip{ b*@K  
* XfMUodV-OZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AU%Yr 6  
*/ p= x &X~  
public void sort(int[] data) { !J<0.nO/:  
int temp; 4[;}/-  
for (int i = 0; i < data.length; i++) { = B;qy7?  
int lowIndex = i; P~:^bU^F7  
for (int j = data.length - 1; j > i; j--) { T8&sPt,f  
if (data[j] < data[lowIndex]) { 7^! zT  
lowIndex = j; Xg_l4!T_l  
} iY2q^z/S  
} w?nSQBz$  
SortUtil.swap(data,i,lowIndex); w;AbJCv2  
} $qZ6i  
} |HY{Q1%  
=1|p$@L`%  
} 55<!H-zt  
)*uotV  
Shell排序: +/mCYI  
f!5w+6(  
package org.rut.util.algorithm.support; BU>R<A5h  
4o@:+T:1  
import org.rut.util.algorithm.SortUtil; P()W\+",n  
I D-I<Ev  
/** hDUU_.q)D  
* @author treeroot Y|hd!C-x  
* @since 2006-2-2 E U RKzJk  
* @version 1.0 -p7 HQ/  
*/ 3&M0@/  
public class ShellSort implements SortUtil.Sort{ Da6l =M  
|)%H_TXTy  
/* (non-Javadoc) 46\!W(O~y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W)  
*/ #{?RE?nD  
public void sort(int[] data) { FS @55mQ  
for(int i=data.length/2;i>2;i/=2){ f61vE  
for(int j=0;j insertSort(data,j,i); /.A"HGAk  
} ZXiJ5BZ  
} %Q]thv:  
insertSort(data,0,1); ,g"JgX  
} DXO'MZon3  
\fI05GZ  
/** *L*{FnsV  
* @param data ze5#6Vzd&  
* @param j wCv9VvF`  
* @param i u:W/6QS  
*/ $*_79F2zN  
private void insertSort(int[] data, int start, int inc) { \{a5]G(4s  
int temp; ;tA$ x!5]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &><b/,]  
} .s41Tc5u  
} 1LvR,V<  
} Rd]<591  
NzM,0q  
} L|-|DOgw  
^4\0, >  
快速排序: e(b$LUV  
r6aIW8  
package org.rut.util.algorithm.support; 2* T Ir  
b~YIaD[Z  
import org.rut.util.algorithm.SortUtil; U-,s/VQ?  
toOdL0hCe  
/** hV) `e"r\s  
* @author treeroot N;>s|ET  
* @since 2006-2-2 SXJjagAoML  
* @version 1.0 7,alZ"%W  
*/ 4,Uqcw?!F'  
public class QuickSort implements SortUtil.Sort{ {36N=A  
N0\<B-8+,>  
/* (non-Javadoc) b^}U^2S%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /"~UGn]R  
*/ Q:y'G9b  
public void sort(int[] data) { =9p3^:S  
quickSort(data,0,data.length-1); o^owv(  
} m&(qr5>b  
private void quickSort(int[] data,int i,int j){ v|]"uPxH?  
int pivotIndex=(i+j)/2; jt*B0'Sa  
file://swap q3K}2g  
SortUtil.swap(data,pivotIndex,j); mC(YO y  
Up_"qD6  
int k=partition(data,i-1,j,data[j]); T;PLUjp}  
SortUtil.swap(data,k,j); -'*<;]P+.  
if((k-i)>1) quickSort(data,i,k-1); N Mx:Jh-YN  
if((j-k)>1) quickSort(data,k+1,j); Y!Io @{f  
m$pRA0s2`  
} ;7H^;+P  
/** +/M%%:>mY  
* @param data , \RR@~u'  
* @param i jPx}-_jM  
* @param j {L.uLr_?e  
* @return [io|qLr}\  
*/ -m ;n}ECg  
private int partition(int[] data, int l, int r,int pivot) { 08%Bx~88_%  
do{ itc\wn  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %S$$*|_G  
SortUtil.swap(data,l,r); %yl17:h#  
} A McZm0c`  
while(l SortUtil.swap(data,l,r); a <F2]H=J  
return l; `}bvbvmA  
} <nN# K{AH  
j}(m$j'  
} 6'<[QoW];  
G!%8DX5  
改进后的快速排序: J ^<uo (  
88?O4)c  
package org.rut.util.algorithm.support; )24M?R@r  
C[#C/@  
import org.rut.util.algorithm.SortUtil; dq'f >S z}  
;mwnAO  
/** ?*7Mn`  
* @author treeroot -g|ji.  
* @since 2006-2-2 WA:r4V  
* @version 1.0 fd>&RbUp  
*/ DrxQ(yo}  
public class ImprovedQuickSort implements SortUtil.Sort { Q#K10*-O6  
@A*>lUo  
private static int MAX_STACK_SIZE=4096; *8)va  
private static int THRESHOLD=10; 8B(v6(h  
/* (non-Javadoc) Z`ww[Tbv~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k{UeY[,jb  
*/  j},i=v  
public void sort(int[] data) { l5KO_"hy  
int[] stack=new int[MAX_STACK_SIZE]; 27$,D XD  
L<Z,@q `  
int top=-1; Xw7'I  
int pivot; * >8EMq\^  
int pivotIndex,l,r; I:UDEoQo  
iXvrZofE  
stack[++top]=0; (vchZn#  
stack[++top]=data.length-1; _)~VKA]""  
?~yJ7~3TS<  
while(top>0){ 5wl;fL~e  
int j=stack[top--]; #5'& |<  
int i=stack[top--]; ``6-   
o[+t}hC[  
pivotIndex=(i+j)/2; wArfnB&  
pivot=data[pivotIndex]; 6f ?,v5  
b >k2@  
SortUtil.swap(data,pivotIndex,j); 8VO]; +N  
!H9^j6|  
file://partition -%^'x&e  
l=i-1; ~<s^HP2U{  
r=j; S'hUh'PZ  
do{ *yjnC  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); kY{$[+-jR  
SortUtil.swap(data,l,r); LNHi }P~  
} { w sT  
while(l SortUtil.swap(data,l,r); v'S5F@ln  
SortUtil.swap(data,l,j); b`^Q ':^A  
:g^ mg-8  
if((l-i)>THRESHOLD){ WY!4^<|w"  
stack[++top]=i; f#w u~*c  
stack[++top]=l-1; 1KBGML-K3  
} S9r+Nsn  
if((j-l)>THRESHOLD){ (+/d*4  
stack[++top]=l+1; NuD|%Ebs  
stack[++top]=j; MxKTKBxQ  
} ]yZ%wU9!  
RgQs`aI  
} _:p-\Oo.  
file://new InsertSort().sort(data); J.M&Vj:  
insertSort(data); s;* UP   
} uLPBl~Y  
/** 5/7(>ivn  
* @param data mw;4/ /R  
*/ AYN dV(  
private void insertSort(int[] data) { |5X[/Q*K`W  
int temp; [;sTl~gC  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =adHP|S  
} IAq o(Qm  
}  Y#~A":A  
} d%-/U!z?  
%d(= >  
} 8"ZS|^#  
$gD8[NAIx=  
归并排序: z0SF2L H  
.Y^cs+-o  
package org.rut.util.algorithm.support; c:>&YGmhu  
V %D1Q}X  
import org.rut.util.algorithm.SortUtil; jC{KI!kPt  
bcpsjUiy#  
/** 5I^;v;F  
* @author treeroot u'>94Gm}  
* @since 2006-2-2 A>2_I)  
* @version 1.0 NMf#0Nz-  
*/ ()O&O+R|)  
public class MergeSort implements SortUtil.Sort{ \]5I atli  
/sT?p=[.  
/* (non-Javadoc) ctLNzJes%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2{vAs  
*/ [Z#Sj=z  
public void sort(int[] data) { 5\#I4\  
int[] temp=new int[data.length]; >0<n%V#s:r  
mergeSort(data,temp,0,data.length-1); 5Pn.c!  
} %DXBl:!Y`  
K%x]:|,>M  
private void mergeSort(int[] data,int[] temp,int l,int r){ IM/xBP  
int mid=(l+r)/2; x-X~'p'f  
if(l==r) return ; t H.L_< N  
mergeSort(data,temp,l,mid); QeuM',6R  
mergeSort(data,temp,mid+1,r); =|ODa/2 p  
for(int i=l;i<=r;i++){ [3nWxFz$R  
temp=data; dr:x0>  
} g3>>gu#0DC  
int i1=l; hd~#I<8;2  
int i2=mid+1; vO~  Tx  
for(int cur=l;cur<=r;cur++){ CE c(2q+%i  
if(i1==mid+1) ,qv\Y]  
data[cur]=temp[i2++]; L~Peerby  
else if(i2>r) -`* 'p i  
data[cur]=temp[i1++]; {tY1$}R  
else if(temp[i1] data[cur]=temp[i1++]; kmc"`Ogotw  
else "#E<Leh'  
data[cur]=temp[i2++]; <<A#4!f  
} n-l_PhPQ`  
} ~~-VScG&  
ftR& 5 !Wm  
} 83t/ \x,Q  
c3g`k"3*`  
改进后的归并排序: ?Y,^Moc:  
'xx M0Kn`  
package org.rut.util.algorithm.support; Z_m<x!  
}YFM4 0H  
import org.rut.util.algorithm.SortUtil; Mh5> hD  
5:f!EMb  
/** L6{gwoZf3  
* @author treeroot 6WG g_x?3  
* @since 2006-2-2 }P.Z}n;Uj  
* @version 1.0 Q+9:]Bt  
*/ ".(vR7u'  
public class ImprovedMergeSort implements SortUtil.Sort { D_czUM  
\WE&5 9G  
private static final int THRESHOLD = 10; M.- {->  
?dCwo;~  
/* PRaVe,5a  
* (non-Javadoc) n{sk  
* &|#[.ti1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B#jnM~fJz  
*/ nv@z;#&  
public void sort(int[] data) { k)S1Zs~G  
int[] temp=new int[data.length]; E(|A"=\  
mergeSort(data,temp,0,data.length-1); # 5)/B  
} v>B412l  
|yeQz  
private void mergeSort(int[] data, int[] temp, int l, int r) { 0h*Le  
int i, j, k; 6` TwP\!$/  
int mid = (l + r) / 2; Z}uY%]  
if (l == r) $$1t4=Pz  
return; "}*D,[C5e  
if ((mid - l) >= THRESHOLD) wb?k  
mergeSort(data, temp, l, mid); gI;"PkN  
else `7: uc@  
insertSort(data, l, mid - l + 1); eQu(3sYb  
if ((r - mid) > THRESHOLD) j0; ~2W#G*  
mergeSort(data, temp, mid + 1, r); :1j8!R5  
else X%IqZ{ {  
insertSort(data, mid + 1, r - mid); -GPJ,S V>  
Nyy&'\`!  
for (i = l; i <= mid; i++) { jo<xrn\  
temp = data; HC6U_d1-6  
} C:t>u..  
for (j = 1; j <= r - mid; j++) { #[{{&sN  
temp[r - j + 1] = data[j + mid]; EpMxq7*  
} >U{iof<  
int a = temp[l]; /)Cfm1$ic  
int b = temp[r]; VbvP!<8  
for (i = l, j = r, k = l; k <= r; k++) { T3{~f  
if (a < b) { /h+ W L  
data[k] = temp[i++]; dnoF)(d&Cm  
a = temp; K!&W}_@l  
} else { z0<E3t  
data[k] = temp[j--]; nZ(]WPIN"  
b = temp[j]; BKg8p]`+  
} .s*N1 U?h  
} F8?2+w@P  
} '@.6Rd 8  
/x ?@M n>  
/** VGeTX 4h  
* @param data nwKp8mfP  
* @param l (6ga*5<  
* @param i h2Nt@  
*/ )4=86>XJT  
private void insertSort(int[] data, int start, int len) { OA&'T*)-A6  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); E.Xp\Dm71  
} M0fN[!*z  
} iv~R4;;)  
} Nt@|l7Xl*  
} ,Zn6T"[$  
H%vfRl3rB  
堆排序: T(?w}i  
0NU%z.(%s  
package org.rut.util.algorithm.support; HfVHjF)  
?uSoJM`wa!  
import org.rut.util.algorithm.SortUtil; FAdTm#tgW]  
Qy"Jt]O  
/** M\m:H3[  
* @author treeroot `CS\"|z  
* @since 2006-2-2 Lxp}o7>K  
* @version 1.0 GLtWo+g0  
*/ {q)d  
public class HeapSort implements SortUtil.Sort{ H_RfIX)X  
iN Oj @3x  
/* (non-Javadoc) w<`0D)mQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I2$DlEke  
*/ {k3ItGQ_  
public void sort(int[] data) { =m2_:&@0x  
MaxHeap h=new MaxHeap(); W:RjWn@<  
h.init(data); 2~$S @c  
for(int i=0;i h.remove(); ),p0V  
System.arraycopy(h.queue,1,data,0,data.length); M/p9 I gp  
} ?0/$RpFEM#  
x!_5 /  
private static class MaxHeap{ 0Gs\x  
w/*G!o- <  
void init(int[] data){ ]!{S2x&"  
this.queue=new int[data.length+1]; ]M*`Y[5"  
for(int i=0;i queue[++size]=data; I:TbZ*vi~  
fixUp(size); "Wg,]$IvU  
} :1*E5pX0n  
} Tx PFl7,r  
&RZO\ZT  
private int size=0; ) 1AAL0F\B  
F9j@KC(yg  
private int[] queue; tC'E#2  
=6dAF"b)  
public int get() { NF8<9  
return queue[1]; )%@7tx  
} %JE>Z]  
xkDK5&V  
public void remove() { \PxT47[@e  
SortUtil.swap(queue,1,size--); N=\ zx^w,  
fixDown(1); eTp|!T  
} Nf )YG!  
file://fixdown v=@y7P1  
private void fixDown(int k) { r5~ W/eE  
int j; @bA5uY!  
while ((j = k << 1) <= size) { $@'BB=i  
if (j < size %26amp;%26amp; queue[j] j++; X3}eq|r9  
if (queue[k]>queue[j]) file://不用交换 cOV9g)7^O  
break; c},pu[nL  
SortUtil.swap(queue,j,k); 5FR#CQ  
k = j; x9 Z89Gwi  
} XZKlE F?  
} {nwoJ'-V  
private void fixUp(int k) { {jO+N+Ez9  
while (k > 1) { L6_%SGY_iE  
int j = k >> 1; s<{ Hu0K$  
if (queue[j]>queue[k]) V gMgeja  
break; ]_h 3  
SortUtil.swap(queue,j,k); j2Dw7"f3  
k = j; **h4M2'C  
} kZG.Id  
} d MR?pbD  
v`,!wS  
} OlCqv-B2&  
"HJ^>%ia  
} ?{ExBZNa  
v%qOW)].  
SortUtil: ! eZls  
w U+r]SK@  
package org.rut.util.algorithm; 7G_<+rn  
6HK1?  
import org.rut.util.algorithm.support.BubbleSort; <{cY2cx~3  
import org.rut.util.algorithm.support.HeapSort; 6 ^3RfF^W  
import org.rut.util.algorithm.support.ImprovedMergeSort; o`c+eMwr(  
import org.rut.util.algorithm.support.ImprovedQuickSort; ~Tt@ v`}  
import org.rut.util.algorithm.support.InsertSort;  C^"zU>W_  
import org.rut.util.algorithm.support.MergeSort; eY :"\c3  
import org.rut.util.algorithm.support.QuickSort; =T9h7c R  
import org.rut.util.algorithm.support.SelectionSort; j<~Wp$\i7>  
import org.rut.util.algorithm.support.ShellSort; 3FR(gr$X  
SQ,-45@W  
/** '* y(F*7+  
* @author treeroot j_2g*lQ7a  
* @since 2006-2-2 TMMKRC1<  
* @version 1.0 !=:>yWQ  
*/ \B4H0f  
public class SortUtil { h]s6)tI I  
public final static int INSERT = 1; gw"cXny  
public final static int BUBBLE = 2; Cy?]o?_?  
public final static int SELECTION = 3; 1]:,Xa+|S  
public final static int SHELL = 4; {KHI(*r;  
public final static int QUICK = 5; 2%WeB/)9  
public final static int IMPROVED_QUICK = 6; ,CyX*k8o  
public final static int MERGE = 7; 68z#9}  
public final static int IMPROVED_MERGE = 8; U*a#{C7"  
public final static int HEAP = 9; {%3WHGr%L  
"yw{A%J  
public static void sort(int[] data) {  <)TIj6  
sort(data, IMPROVED_QUICK); .rk5u4yK  
} "]=OR>  
private static String[] name={ @}4>:\es  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" X&zGgP/  
}; +zMhA p  
)r46I$]>  
private static Sort[] impl=new Sort[]{ GPHb-  
new InsertSort(), + -Rf@  
new BubbleSort(), 6HCg<_j]  
new SelectionSort(), q#3T L<  
new ShellSort(), %J1'>nI!q  
new QuickSort(), # QwX|x{  
new ImprovedQuickSort(), 6c]4(%8  
new MergeSort(), @;eH~3P  
new ImprovedMergeSort(), 6 EqN>.  
new HeapSort()  G06;x   
}; F\N0<o  
7#C$}1XJ1  
public static String toString(int algorithm){ \L(jNN0_R  
return name[algorithm-1]; bWA_a]G  
} T@ESMPeU:X  
k4$zM/ob  
public static void sort(int[] data, int algorithm) { q+9^rQ  
impl[algorithm-1].sort(data); x,^-a  
} 9R$$(zB 1;  
m~Pk ]~j  
public static interface Sort { ~:JAWs$\V  
public void sort(int[] data); bji#ID2]%  
} {oY"CZ2  
>Y4^<!\v  
public static void swap(int[] data, int i, int j) { YA@?L!F  
int temp = data; :4zPYG o  
data = data[j]; lknj/i5L  
data[j] = temp; }K 'A/]'  
} SlB`ktcfI  
} a&G{3#l  
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