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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。 V[fcP;   
插入排序: Q|Go7MQZ@k  
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package org.rut.util.algorithm.support; -iySU 6  
vJfj1 f  
import org.rut.util.algorithm.SortUtil; pa2cM%48  
/** *,#T&M7D  
* @author treeroot [*z`p;n2D  
* @since 2006-2-2 o}6d[G>  
* @version 1.0 VhX~sJ1%Gp  
*/  o\-:  
public class InsertSort implements SortUtil.Sort{ BiI`oCX  
{N`<TH PP  
/* (non-Javadoc) c~v(bK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F8OE  
*/ 1zWEK]2.R  
public void sort(int[] data) { :GN7JxD#  
int temp; 7!jb ID~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e>Q_&6L  
} b^C2<'  
} 'G8.)eTA'  
} [.LbX`K:  
n81z 0lnr  
} [O\[,E"K  
zMbz_22*  
冒泡排序: U9%#(T$  
ofHe8a8  
package org.rut.util.algorithm.support; 4 t< mX  
rh$q]  
import org.rut.util.algorithm.SortUtil; +5oK91o[y  
bqSp4TI  
/** Fpckb18}(O  
* @author treeroot +lED6 ]+%  
* @since 2006-2-2 k \V6 q9*  
* @version 1.0 V^E.9fs,  
*/ wC>Xu.Z:  
public class BubbleSort implements SortUtil.Sort{ |z]--h  
$i.)1.x  
/* (non-Javadoc) jyFXAs2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /qObXI  
*/ 1jkMje  
public void sort(int[] data) { 0PT\/imgN  
int temp; _'"$,~ZWY  
for(int i=0;i for(int j=data.length-1;j>i;j--){ pqnZ:'V  
if(data[j] SortUtil.swap(data,j,j-1); ;nZN}&m   
} 0zrZrl  
} 2-x#|9  
} 0pl |  
} sEm064  
i2Cw#x0s  
} ;.|).y1/`  
Gk2R:\/Y  
选择排序: _NkbB"+L  
VmTPE5d  
package org.rut.util.algorithm.support; Kfk/pYMDq  
%\QK/`krp  
import org.rut.util.algorithm.SortUtil; /G& %T  
j/PNi@  
/** iw?*Wp25  
* @author treeroot 3lT>C'qq  
* @since 2006-2-2 XXA1%Lw%  
* @version 1.0 59Lmv &s  
*/ 9Bw.Ih[Z  
public class SelectionSort implements SortUtil.Sort { xji2#S%  
V]qv,>  
/* K6nGC  
* (non-Javadoc) z[bS soK`  
* Qz9*o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fsH =2p  
*/ aEwwK(ny  
public void sort(int[] data) { kCVA~ %d7  
int temp; <yz&> +9,  
for (int i = 0; i < data.length; i++) { +c-?1j  
int lowIndex = i; B?p18u$i#l  
for (int j = data.length - 1; j > i; j--) { Yk!TQY4  
if (data[j] < data[lowIndex]) { / +9o?Kxya  
lowIndex = j; Z+]Uw   
} SxWK@)tP  
} [(PD2GO+  
SortUtil.swap(data,i,lowIndex); L2 ^-t7  
} xIb^x=|h  
} zf}X%tp  
>YuiCf?c7  
} ^oT!%"\  
o:8*WCiqrN  
Shell排序: ZQ'bB5I  
r~U/t~V=D  
package org.rut.util.algorithm.support; Mz#<Vm4  
+?[,{WtV  
import org.rut.util.algorithm.SortUtil; fBRU4q=^T  
B`i 5lD  
/** q#!]5  
* @author treeroot k7\ ,N o}  
* @since 2006-2-2 @$ggPrs  
* @version 1.0 AHl1{* [  
*/ [d}AlG!  
public class ShellSort implements SortUtil.Sort{ (M,IgSn9  
Z[pMlg6Z  
/* (non-Javadoc) /Xo8 kC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u[;,~eB%w  
*/ ** !  
public void sort(int[] data) { ic]b"ItD  
for(int i=data.length/2;i>2;i/=2){ 0}d^UGD  
for(int j=0;j insertSort(data,j,i); = gbB)u-Pc  
} xQK;3b  
} 9/_F  
insertSort(data,0,1); \n`)>-  
} AQ` `Dp  
klwNeGF]N  
/** !.}ZlA  
* @param data 4<{]_S6"0y  
* @param j i9 Tq h  
* @param i W`2Xn?g  
*/ Y&JK*d  
private void insertSort(int[] data, int start, int inc) { n13#}i {tm  
int temp; rjLPX  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1*o=I-nOa  
} l=.h]]`;  
} MrGq{,6C  
} >*FHJCe  
XwNJHOaF  
} 5B76D12  
C~:@ETcbil  
快速排序: DtrR< &m  
~vMdIZ.h  
package org.rut.util.algorithm.support; g!*5@k|C  
Nt5`F@;B  
import org.rut.util.algorithm.SortUtil; Hz6tk9;w  
r3_O?b  
/** yoc;`hO-  
* @author treeroot Z2cumx(  
* @since 2006-2-2 Sq Y$\&%  
* @version 1.0 6-oy%OnN  
*/ 2S^:fm}  
public class QuickSort implements SortUtil.Sort{ rrL gBeQa  
Un[ 0or  
/* (non-Javadoc) U:1cbD7|3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HZDeQx`*s  
*/ t6JM%  
public void sort(int[] data) { $ /p/9 -  
quickSort(data,0,data.length-1); k~,({T<  
} ! O~:  
private void quickSort(int[] data,int i,int j){ Zl4X,9Wt  
int pivotIndex=(i+j)/2; |0Y: /uL#)  
file://swap VsJ4sb7  
SortUtil.swap(data,pivotIndex,j); pd Fa]  
k(bDj[0q^  
int k=partition(data,i-1,j,data[j]); psaPrE  
SortUtil.swap(data,k,j); ;)'@kzi  
if((k-i)>1) quickSort(data,i,k-1); :U!@  
if((j-k)>1) quickSort(data,k+1,j); $2gX!)  
d[7B,l:RN  
} ^/V>^9CZ  
/** !`h^S)$  
* @param data >nqCUhS   
* @param i iS]4F_|vd  
* @param j jr`;H  
* @return U-mZO7y!  
*/ YooP HeQ  
private int partition(int[] data, int l, int r,int pivot) { Vhi4_~W3j]  
do{ DY(pU/q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b$W~w*O   
SortUtil.swap(data,l,r); XGCjB{IV  
} tP0\;W  
while(l SortUtil.swap(data,l,r); |3{"ANmm'  
return l; ;if PqL kO  
} N R0"yJV>  
nd4Z5=X  
} fb*h.6^y9  
*+|,rcI  
改进后的快速排序: , R;k>'.  
L%Mj{fJ>Wm  
package org.rut.util.algorithm.support; S8Ec.]T   
9(AY7]6  
import org.rut.util.algorithm.SortUtil; `Hp=1a  
 gmW-#.  
/** N}\%r&KR=  
* @author treeroot o0}kRL  
* @since 2006-2-2 6a!b20IZh  
* @version 1.0 @yj$  
*/ KKcajN  
public class ImprovedQuickSort implements SortUtil.Sort { \M U-D,@  
9 7Ua,  
private static int MAX_STACK_SIZE=4096; #M5pQ&yZy  
private static int THRESHOLD=10; kIwq%c;  
/* (non-Javadoc) W Yo>Md 8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RE%25t|  
*/ ;Zt N9l  
public void sort(int[] data) { fG_<HJS(~  
int[] stack=new int[MAX_STACK_SIZE]; 4Wk`P]?^  
#9e2+5s  
int top=-1; T jrz_o)  
int pivot; r"&uW !~0  
int pivotIndex,l,r; b'1m 9T780  
#6F|}E  
stack[++top]=0; 8c3/n   
stack[++top]=data.length-1; Bag_0.H&m  
Is[n7Q  
while(top>0){ {TVQ]G%'b  
int j=stack[top--]; Memb`3  
int i=stack[top--]; &WJ;s*  
"~:P-]`G  
pivotIndex=(i+j)/2; uGU-MC *  
pivot=data[pivotIndex]; > Hwf/Gf[  
Z/e^G f#i  
SortUtil.swap(data,pivotIndex,j); %$6?em_  
cES8%UC^i  
file://partition EL^j}P  
l=i-1; B".3NQ  
r=j; 9 K~X+N\  
do{ &ev#C%Nu  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cof+iI~9O%  
SortUtil.swap(data,l,r); ^OrO&w|  
} l[Ko>  
while(l SortUtil.swap(data,l,r); n3_| # 1Qu  
SortUtil.swap(data,l,j); %{B4M#~  
A)80qx:  
if((l-i)>THRESHOLD){ 7TB&Q*Zf  
stack[++top]=i; cMoBYk  
stack[++top]=l-1; sUk&NM%>  
} = J0r,dR  
if((j-l)>THRESHOLD){ P%y9fU2[  
stack[++top]=l+1; ?Ll1B3f  
stack[++top]=j; U&o ~U] rm  
} hH]oJ}H \  
t;b1<TLn0  
} ;-quK%VO!  
file://new InsertSort().sort(data); Z \S'HNU  
insertSort(data); #Fckev4  
} _ 5/3RN  
/** jP31K{G?  
* @param data (gEz<}Av.  
*/  ,8)aK y  
private void insertSort(int[] data) { lFV\Go  
int temp; 7? ]wAH89  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1B`JvNtd  
} S;}/ql y  
} BmFtRbR  
} {`+:!X   
jL*s(Yq  
} ; ]VLA9dC  
7e:7RAX  
归并排序: "Z#MR`;&29  
}+fBJ$  
package org.rut.util.algorithm.support; ,T8fo\a4  
)(h<vo)-zX  
import org.rut.util.algorithm.SortUtil; c8oE,-~  
+:3p*x%1H  
/** )VeeAu)p  
* @author treeroot 5 J 7XVe>  
* @since 2006-2-2 BYZllwxwTE  
* @version 1.0 g+QNIM>  
*/ J:dNV <A^  
public class MergeSort implements SortUtil.Sort{ b8h6fB:2  
M5`wfF,j  
/* (non-Javadoc) iUk#0 I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Xj>dB1~  
*/ *n`8 -=  
public void sort(int[] data) { CA3`Ee+rD  
int[] temp=new int[data.length]; ?MD\\gN  
mergeSort(data,temp,0,data.length-1); tg;AF<VI  
} 7 aN}l QM  
v03 ^  
private void mergeSort(int[] data,int[] temp,int l,int r){ ;5:3 =F>ao  
int mid=(l+r)/2; =`t%p1   
if(l==r) return ; \ocC'FmE  
mergeSort(data,temp,l,mid); lTJM}K  
mergeSort(data,temp,mid+1,r); r?R!/`f  
for(int i=l;i<=r;i++){ n:[LsbTk  
temp=data; 7!q.MOYm  
} V&R_A~<T  
int i1=l; fvM|Jb  
int i2=mid+1; 4~e6z(  
for(int cur=l;cur<=r;cur++){ gx=2]~O1(  
if(i1==mid+1) NBO&VYs|  
data[cur]=temp[i2++]; ee*E:Ltz\  
else if(i2>r) f/pr  
data[cur]=temp[i1++]; WO+_ |*&  
else if(temp[i1] data[cur]=temp[i1++]; 4p]hY!7  
else x<>In"QV  
data[cur]=temp[i2++]; /S`d?AV  
} e[%g'}D:-  
} Ew2ksZ>B]&  
J72 YZrc  
} _j?/O)M c  
}>?"bcJ  
改进后的归并排序: fHacVj J  
4Dv42fO  
package org.rut.util.algorithm.support; ILT.yxV  
9 [wR/8Xm  
import org.rut.util.algorithm.SortUtil; A{ Ejk|  
\"Aw ATQ  
/** jHpFl4VPz  
* @author treeroot *h2)$^P%  
* @since 2006-2-2 #6za  
* @version 1.0 ("_tML 8/p  
*/ ^vr`t9EE  
public class ImprovedMergeSort implements SortUtil.Sort { -MItZ  
~ MW_=6U  
private static final int THRESHOLD = 10; 22"/|S  
u|8yV.=R  
/* (Q6}N'T  
* (non-Javadoc) BCw0kq@  
* <'<{|$Pw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y0cB@pWp  
*/ -\~D6OA  
public void sort(int[] data) { Cs8e("w  
int[] temp=new int[data.length]; ^ ,yh384  
mergeSort(data,temp,0,data.length-1); \bumB<w(]  
} Q~G>=J9  
Uv(Uj3D  
private void mergeSort(int[] data, int[] temp, int l, int r) {  ^6Y:9+  
int i, j, k; '>"-e'1m(  
int mid = (l + r) / 2; \7A6+[ `fa  
if (l == r) roE*8:Y  
return; AE&IN.-  
if ((mid - l) >= THRESHOLD) }|4dEao\  
mergeSort(data, temp, l, mid); AV^Sla7|_  
else ^n8r mh_%  
insertSort(data, l, mid - l + 1); NRZ>03w  
if ((r - mid) > THRESHOLD) Wo~#R   
mergeSort(data, temp, mid + 1, r); y1+~IjY  
else ee{8C~  
insertSort(data, mid + 1, r - mid); O;~d ao  
Pdw[#X<[`  
for (i = l; i <= mid; i++) { mdPEF)-  
temp = data; PV/S zfvIq  
} Mwd(?o  
for (j = 1; j <= r - mid; j++) { o;2QZ"v  
temp[r - j + 1] = data[j + mid]; M}BqSzd*  
} \hFIg3  
int a = temp[l]; m\?H < o0  
int b = temp[r]; Jp]eFaqp  
for (i = l, j = r, k = l; k <= r; k++) { 7cMSJM(]G  
if (a < b) { PK|"+I0  
data[k] = temp[i++]; Ae 3:"  
a = temp; xk$U+8K  
} else { 'hl4cHk14  
data[k] = temp[j--]; J,j!  
b = temp[j]; l-RwCw4f  
} "1Oe bo2  
} #OVf2  "  
} ::A]p@  
l:H}Y3_I  
/** Ff @Cs0R  
* @param data uGMmS9v$ J  
* @param l BV01&.<|  
* @param i QL_9a,R'r  
*/ O6$d@r;EK]  
private void insertSort(int[] data, int start, int len) { NM_Xy<.~E  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9 WhZ= Xk  
}  ]7yr.4?a  
} }Pn]j7u!  
} 27-GfC=7*  
} JM-+p  
 dr iw\  
堆排序: Kt3 ]r:&J  
9k[>(LC  
package org.rut.util.algorithm.support; wc#E:GJcK  
X,"(G}KUA  
import org.rut.util.algorithm.SortUtil; mIX[HDy:V$  
Xv'5%o^i*  
/** 8e3I@mv  
* @author treeroot -r!sY+Z>  
* @since 2006-2-2 8Cw+<A*  
* @version 1.0 U%nLo[k  
*/ u+Q<> >lU  
public class HeapSort implements SortUtil.Sort{ 6@[7  
lboi\GP|  
/* (non-Javadoc) rW(<[2vg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7r4|>F  
*/  YXr"  
public void sort(int[] data) { ht 1d[  
MaxHeap h=new MaxHeap(); nD51,1>  
h.init(data); UfWn\*J&k  
for(int i=0;i h.remove(); O>H'o k  
System.arraycopy(h.queue,1,data,0,data.length); A\v(!yg  
} ^<VJ8jk<  
[|!A3o  
private static class MaxHeap{ K7CrRT3>6  
gLL8-T[9  
void init(int[] data){ -x?I6>{  
this.queue=new int[data.length+1]; $+$S}i=  
for(int i=0;i queue[++size]=data; ,=@%XMS  
fixUp(size); ?|;q=p`t-  
} vRQ7=N{3  
} ~l@ h  
gL:Vj%c  
private int size=0; Z>si%Npm\  
O<o>/HH$  
private int[] queue; %2jRJ  
*lT:P-  
public int get() { }; ;Thfd  
return queue[1]; g VPtd[r  
} :ENdF `nC  
KtO|14R:  
public void remove() { (L3Etan4RE  
SortUtil.swap(queue,1,size--); 6S GV}dAx  
fixDown(1); 5v`[c+@F  
} (:P-ef$]C  
file://fixdown Gjh8>(  
private void fixDown(int k) { <X b B;  
int j; mhDC1lXF  
while ((j = k << 1) <= size) { i=^!? i  
if (j < size %26amp;%26amp; queue[j] j++; t) :'XGk@  
if (queue[k]>queue[j]) file://不用交换 il5Qo  
break; DQy<!Wb+  
SortUtil.swap(queue,j,k); bk}'wcX<+]  
k = j; p9`!.~[  
} -E(0}\  
} zv8AvNDK  
private void fixUp(int k) { Sd |=*X  
while (k > 1) { ._i|+[  
int j = k >> 1; ~>"m`Q&[  
if (queue[j]>queue[k]) zvgy$]y'\  
break; ~]_U!r[FA  
SortUtil.swap(queue,j,k); Ump$N#  
k = j; gZHuyp(B  
} %Y:"5fH  
} 0Kytg\p}  
lIUaGz|  
} !5}u\  
P\lEfsuR  
} T{:~v+I=  
$"P[nNW3  
SortUtil: DQ*T2*L  
* ",/7(  
package org.rut.util.algorithm; fR$_=WWN>h  
(& UQ^  
import org.rut.util.algorithm.support.BubbleSort; . \t8s0A  
import org.rut.util.algorithm.support.HeapSort; rn9n_)  
import org.rut.util.algorithm.support.ImprovedMergeSort; Oe~x,=X)  
import org.rut.util.algorithm.support.ImprovedQuickSort; 9>6DA^  
import org.rut.util.algorithm.support.InsertSort; rV_i|  
import org.rut.util.algorithm.support.MergeSort; @$aGVEcU$  
import org.rut.util.algorithm.support.QuickSort; / :z<+SCh  
import org.rut.util.algorithm.support.SelectionSort; x=M%QFe  
import org.rut.util.algorithm.support.ShellSort; sW^e D;  
/2.}m`5  
/** K8bKTG\  
* @author treeroot =f/CBYNw@V  
* @since 2006-2-2 <%iRa$i5  
* @version 1.0 xk*&zAt  
*/ S T1V  
public class SortUtil { QHDR* tB:{  
public final static int INSERT = 1; ]T:a&DHC  
public final static int BUBBLE = 2; b$;qtfJG  
public final static int SELECTION = 3; _@5|r|P>  
public final static int SHELL = 4; vk0b b3){D  
public final static int QUICK = 5; 0Fw4}f.o  
public final static int IMPROVED_QUICK = 6; DEw>f%&4  
public final static int MERGE = 7; tP][o494\&  
public final static int IMPROVED_MERGE = 8; B%^W$7 q  
public final static int HEAP = 9; bt{b%r  
@u @~gEt  
public static void sort(int[] data) { 9]Fi2M  
sort(data, IMPROVED_QUICK); 'CMbq Lk#  
} U #C@&2  
private static String[] name={ ak A7))Q  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 1PB"1.wnd  
}; #soV'SFG  
bQ3txuha  
private static Sort[] impl=new Sort[]{ (yb$h0HN  
new InsertSort(), kz\Ss|jl  
new BubbleSort(), ;l %$-/%  
new SelectionSort(), ;aN_!! r  
new ShellSort(), 5MCnGg@  
new QuickSort(), ve]hE}o/}  
new ImprovedQuickSort(), dfP4SJqq  
new MergeSort(), @9tzk [  
new ImprovedMergeSort(), <I#nwoHN  
new HeapSort() w7@TM%nS  
}; hm*cGYV/  
*\(MG|S  
public static String toString(int algorithm){ ~ \]?5 nj  
return name[algorithm-1]; l+a1`O  
} L</k+a?H!  
{vq| 0t\-  
public static void sort(int[] data, int algorithm) { u*T( n s l  
impl[algorithm-1].sort(data); "g,`Ks ];  
} xG(xG%J  
J%u,qF}h  
public static interface Sort { 'Qh1$X)R7a  
public void sort(int[] data); T-LX>*  
} BW:HKH.k  
)dd1B>ej]  
public static void swap(int[] data, int i, int j) { 2 EWXr+IU.  
int temp = data; bp!Jjct  
data = data[j]; O9C&1A|lA  
data[j] = temp; eaAGlEW6J  
} [ {$%9lm  
} \%|Xf[AX  
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