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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。 C[$uf  
插入排序: 8$!/Zg  
p&=F:-  
package org.rut.util.algorithm.support; @b=b>V[d6  
8S1%;@c  
import org.rut.util.algorithm.SortUtil; %gB 0\C  
/** |[x) %5F  
* @author treeroot W! FmC$Kc  
* @since 2006-2-2 zmI?p4,  
* @version 1.0 ;8UHnhk_O  
*/ yi3@-  
public class InsertSort implements SortUtil.Sort{ @>'.F<:P<  
K;2tY+I  
/* (non-Javadoc) |5SYKA7CS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4*9y4"  
*/ rm*Jo|eH`  
public void sort(int[] data) { G0Wzx)3]  
int temp; _p vL b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F kas*79  
} $smzP.V  
} &$fe%1#  
} F"9f6<ge  
C !81Km5  
} SGMLs'D   
jcF/5u5e  
冒泡排序: w U.K+4-k  
4NxtU/5-sU  
package org.rut.util.algorithm.support; vkan+~H  
fSdv%$;Hc  
import org.rut.util.algorithm.SortUtil; b'fj  
?6@Y"5 z3g  
/** e[}R1/! L  
* @author treeroot w/s{{X<bF  
* @since 2006-2-2 Qz;2RELz  
* @version 1.0 >lqWni  
*/ 'sI=*c  
public class BubbleSort implements SortUtil.Sort{ 1c S{3  
G0$ 1"9u\w  
/* (non-Javadoc) Gnmj-'x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6C>x,kU  
*/ 9="i'nYp  
public void sort(int[] data) { a3]'%kKp  
int temp; :Vq gmn  
for(int i=0;i for(int j=data.length-1;j>i;j--){ M:h~;+s  
if(data[j] SortUtil.swap(data,j,j-1); ]* -9zo0  
} -\yaP8V  
} v`B7[B4K3  
} F(/^??<5  
} Owalt4}C  
4f~hd-z  
} &;7\/m*W1  
VF=$'Bl|  
选择排序: >4=sEj  
zEJ|;oL  
package org.rut.util.algorithm.support; r'fNQJ >  
N4"%!.Y  
import org.rut.util.algorithm.SortUtil; ;<%~g8:XL  
,WbO8#z+  
/** mfLS< /A  
* @author treeroot .EGZv (rz&  
* @since 2006-2-2 EKf"e*|(L  
* @version 1.0 ^<xpp.eY  
*/ \}t(g}7T  
public class SelectionSort implements SortUtil.Sort { GOHRBV  
JI5?, )-St  
/* ^lB'7#7  
* (non-Javadoc) XXacWdh \  
* #X7fs5$&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $Y][-8{t  
*/ 2#5SI  
public void sort(int[] data) { ptGM'  
int temp; |/zE(ePc{  
for (int i = 0; i < data.length; i++) { ~^=QBwDW8N  
int lowIndex = i; 4`)B@<  
for (int j = data.length - 1; j > i; j--) { XbYW,a@w2  
if (data[j] < data[lowIndex]) { v#:#w.]-Y  
lowIndex = j; YS k,kU  
} 0*W=u-|s6  
} %WHue  
SortUtil.swap(data,i,lowIndex); a9}cpfG=)  
} EP7L5GZ-a  
} T>d-f=(9KH  
u!mUUFl  
} :<Y,^V(  
~P|YAaFx  
Shell排序: !0ySS {/  
o6K\z+.{  
package org.rut.util.algorithm.support; @rkNx@[~  
LJYFz=p "  
import org.rut.util.algorithm.SortUtil; MzsDWx;eJ  
ge?1ez2  
/** ]~CG zV  
* @author treeroot @v_ )(  
* @since 2006-2-2 draY /  
* @version 1.0 mYXe0E#6  
*/ |#$Wh+,*  
public class ShellSort implements SortUtil.Sort{ FVsVY1  
"zR+}  
/* (non-Javadoc) $d%m%SZxv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q( i|  
*/ Dms 6"x2  
public void sort(int[] data) { W1M<6T.{7  
for(int i=data.length/2;i>2;i/=2){ =:mD)oX*  
for(int j=0;j insertSort(data,j,i); &%L1n?>Q}  
} ^rjICF e  
} U aj8}7v  
insertSort(data,0,1); *^ncb,1+i  
} &(-+?*A`E  
WMZ&LlB%  
/** BdB/`X*  
* @param data zn&NLsA  
* @param j qYZX, x  
* @param i BftW<1,U^  
*/ 0Jz'9  
private void insertSort(int[] data, int start, int inc) { ` *x;&.&v  
int temp; I/rq@27o  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); * Ibl+  
} X a#`VDh  
} g:`V:kbY$  
} BZ<Q.:)  
Y~hBVz2g  
} X0+$pJ60  
w0x, ~  
快速排序: /`>BPQH`}  
<H`&Zqqk  
package org.rut.util.algorithm.support; J7/"8S_#N  
1om:SHw  
import org.rut.util.algorithm.SortUtil; +'Pf|S  
XLz>h(w=  
/** ihBlP\C  
* @author treeroot L0Bcx|)"$`  
* @since 2006-2-2 h)7{Cj  
* @version 1.0 ;'NB6[x  
*/ %fnL  
public class QuickSort implements SortUtil.Sort{ 6%~ Z^>`N  
|E&a3TQW  
/* (non-Javadoc) sL75C|f9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^C^FxIA&  
*/ <5rp$AzT  
public void sort(int[] data) { Y` Oz\W  
quickSort(data,0,data.length-1); 9lNO ~8  
} lX/s Q  
private void quickSort(int[] data,int i,int j){ <Qu]m.z[  
int pivotIndex=(i+j)/2; q+5g+9  
file://swap ^.aFns{wv  
SortUtil.swap(data,pivotIndex,j); K[PH#dF5,x  
UUc{1"z{  
int k=partition(data,i-1,j,data[j]); lt`(R*B%  
SortUtil.swap(data,k,j); a` A V  
if((k-i)>1) quickSort(data,i,k-1); QI'ule  
if((j-k)>1) quickSort(data,k+1,j); t J N;WK.6  
/]=Ih  
} v\PqhIy"  
/** A}?n.MAX>  
* @param data x>d,\{U  
* @param i zBtlkBPu  
* @param j P!3)-apP\  
* @return H WOs   
*/ DKnjmZ:J|  
private int partition(int[] data, int l, int r,int pivot) { pSvRyb.K  
do{ /J )MW{;O  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b(+M/O>I  
SortUtil.swap(data,l,r); "bZ%1)+  
} 109dB$+$  
while(l SortUtil.swap(data,l,r); -b"mx"'?  
return l; 5RXZ$/  
} Fy37I/#)r&  
c1B <9_  
} @?lmho?  
]Qm$S5tU  
改进后的快速排序: d,AEV_  
3cfW|J  
package org.rut.util.algorithm.support; w=H   
GcaLP*%>B  
import org.rut.util.algorithm.SortUtil; I},.U&r  
#pO=\lJ,  
/** `dekaRo  
* @author treeroot smaPZ^;; j  
* @since 2006-2-2 n4\UoKq  
* @version 1.0 L"{qF<@V7&  
*/ o.W:R Ux  
public class ImprovedQuickSort implements SortUtil.Sort { k=!lPIx  
s :ig;zb  
private static int MAX_STACK_SIZE=4096; r0t4\d_&  
private static int THRESHOLD=10; ^=`7]E[p  
/* (non-Javadoc) OV/H&fe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x`~YTOfYk  
*/ 'ol8lIa.P  
public void sort(int[] data) { W|h~&O  
int[] stack=new int[MAX_STACK_SIZE]; j}O~6A>|  
UgI0 *PE2  
int top=-1; 7niZ`doBA  
int pivot; >L[n4x\  
int pivotIndex,l,r; 3}R}|Ha J#  
36"-cGNr{  
stack[++top]=0; v6=pV4k9  
stack[++top]=data.length-1; M|8vP53=q  
1oU/gm$7\q  
while(top>0){ PJ}d-   
int j=stack[top--]; 8 p D$/  
int i=stack[top--]; w3l2u1u  
m#6RJbEz  
pivotIndex=(i+j)/2; )+ifVv50  
pivot=data[pivotIndex]; j'r"_*%  
&JMp)zaI[  
SortUtil.swap(data,pivotIndex,j); `R[cM; c2  
8LuM eGs  
file://partition >}<1  
l=i-1; SFqY*:svOw  
r=j; 8R|!$P  
do{ @cYb37)q=  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); W D8  
SortUtil.swap(data,l,r); {<ms;Oi'  
} p1t qwV  
while(l SortUtil.swap(data,l,r); DR]=\HQ  
SortUtil.swap(data,l,j); >D]g:t@v  
D!7-(3R  
if((l-i)>THRESHOLD){ 6[+@#IWx  
stack[++top]=i; s1 mKz0q  
stack[++top]=l-1; ((0nJJjz  
} 0b=1Ce+0q  
if((j-l)>THRESHOLD){ (U@Ks )  
stack[++top]=l+1; :Kq]b@ X  
stack[++top]=j; 9r2l~zE  
} RvQa&r5l  
Iu" 7  
} #BtJo:  
file://new InsertSort().sort(data); -t#YL  
insertSort(data); *G rYB6MT  
} V[DiN~H  
/** OHRkhwF.  
* @param data d{/#A%.  
*/ |k.%e4  
private void insertSort(int[] data) { }ejZk bP  
int temp; Xz,fjKUnN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Lf 0X(tC  
} #hMS?F|  
} 6LRvl6ik  
} P{m(.EC_  
{$>Pg/  
} ZLI t 3  
c'|](vOd]  
归并排序: ~fnu;'fN  
N 2XL5<  
package org.rut.util.algorithm.support; 4og/y0n,l"  
E P3Vz8^  
import org.rut.util.algorithm.SortUtil; b-8}TTL>  
Q DVk7ks  
/** r7ebFJEf  
* @author treeroot bW-sTGjRD  
* @since 2006-2-2 %eOO8^N  
* @version 1.0 gOy;6\/  
*/ k\76`!B  
public class MergeSort implements SortUtil.Sort{ }G/!9Zq  
X'uQr+p^  
/* (non-Javadoc) <aQ<Wy=\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RCqd2$K"J+  
*/ `!(I Q&  
public void sort(int[] data) { J?#Xy9dz  
int[] temp=new int[data.length]; MCO2(E-  
mergeSort(data,temp,0,data.length-1); ,ZV>"'I:  
} 7Is:hx|:  
]9 $iUA%Ef  
private void mergeSort(int[] data,int[] temp,int l,int r){ a^o'KN{  
int mid=(l+r)/2; ;mT  
if(l==r) return ; +)xjw9b  
mergeSort(data,temp,l,mid); <N{wFvF  
mergeSort(data,temp,mid+1,r); XCyU)[wY  
for(int i=l;i<=r;i++){ [$X^r<|P@  
temp=data; emSky-{$u  
} (b;Kl1Ql]  
int i1=l; Sx8RH),k  
int i2=mid+1; @{>0v"@  
for(int cur=l;cur<=r;cur++){ pC~ M5(F_  
if(i1==mid+1) -e4TqzRr  
data[cur]=temp[i2++]; 1*GL;W~ix*  
else if(i2>r) }el7@Gv  
data[cur]=temp[i1++]; Xj9\:M-  
else if(temp[i1] data[cur]=temp[i1++]; a[_IG-l|i4  
else \ )WS^KR%  
data[cur]=temp[i2++]; $35C1"  
} ri Z :#I  
} \Up~ "q>Kb  
b4qMTRnv  
} W3zYE3DZf  
mBeP" GS  
改进后的归并排序: t"s$YB>}  
9:E:3%%  
package org.rut.util.algorithm.support; h% eGtd$n  
I&U.5wf  
import org.rut.util.algorithm.SortUtil; Zg%tN#6y  
n:[@#xs-  
/** p#%*z~ui  
* @author treeroot _\8jnpT:  
* @since 2006-2-2 '%X29B5  
* @version 1.0 >4#: qIU  
*/ #w3J+U 6r  
public class ImprovedMergeSort implements SortUtil.Sort { '}^qz#w   
}Y^o("c(  
private static final int THRESHOLD = 10; >0z`H|;  
h,?%,GI  
/* *_Vv(H&  
* (non-Javadoc) Lf)JO|o  
* d#OAM;0}5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5T%2al,F`  
*/ !w}b}+]GB  
public void sort(int[] data) { j 1;<3)%0  
int[] temp=new int[data.length]; DRpF EWsm  
mergeSort(data,temp,0,data.length-1); +[R^ ?~VK  
} O{EPq' x  
dF[|9%)  
private void mergeSort(int[] data, int[] temp, int l, int r) { hF{gN3v5  
int i, j, k; d>?C?F  
int mid = (l + r) / 2; 9Fy 'L#%  
if (l == r) HSWki';G  
return; {+m8^-T  
if ((mid - l) >= THRESHOLD) ,CI-IR2  
mergeSort(data, temp, l, mid); a>6D3n W  
else -g."{|  
insertSort(data, l, mid - l + 1); TQu.jC  
if ((r - mid) > THRESHOLD) =w* 8   
mergeSort(data, temp, mid + 1, r); =;4K5l{c  
else ufe |I  
insertSort(data, mid + 1, r - mid); 5E]iv^q%  
p+8o'dl8=  
for (i = l; i <= mid; i++) { IG{ lr  
temp = data; 'A>?aUq]:  
} zYP6m3 n  
for (j = 1; j <= r - mid; j++) { }SC&6B?G  
temp[r - j + 1] = data[j + mid]; K&n-(m%  
} ttdY]+Fj  
int a = temp[l]; Y0Tad?iC  
int b = temp[r]; a4.w2GR  
for (i = l, j = r, k = l; k <= r; k++) { Do77V5  
if (a < b) { :tbgX;tCs5  
data[k] = temp[i++]; Wsgp#W+  
a = temp; qw$9i.Z  
} else { <S=( `D  
data[k] = temp[j--]; MhR`  
b = temp[j]; RcO"k3J  
} $E&T6=Wn  
} 0%Le*C'yk  
} c~4Cpy^  
ZY8w1:'  
/** tkH]_cH'w  
* @param data g^Hf^%3xP  
* @param l /@|iI<|  
* @param i UWnF2,<s;  
*/ /7])]vZ_  
private void insertSort(int[] data, int start, int len) { Ka6u*:/  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); L}CU"  
} 8{=|<  
} O PzudO  
} 4D2U,Ds  
} bf@g*~h@  
78{9@\e"0  
堆排序: 4BUG\~eI3  
?Wz2J3A.2t  
package org.rut.util.algorithm.support; v$0|\)E)  
"{r8'qn  
import org.rut.util.algorithm.SortUtil; 4b[bj").A  
O Bcz'f~  
/** NTD1QJ  
* @author treeroot zBl L98  
* @since 2006-2-2 q01 L{~>bz  
* @version 1.0 Arg/ge.y  
*/ 5q*s_acQ  
public class HeapSort implements SortUtil.Sort{ E a&NJ]& g  
Yb^e7Eug  
/* (non-Javadoc) `kuu}YUi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a7c`[   
*/ /='0W3+o*L  
public void sort(int[] data) { U+*l!"O,  
MaxHeap h=new MaxHeap(); VsJ+-IHm  
h.init(data); ~Ni  
for(int i=0;i h.remove(); z]r'8Jc  
System.arraycopy(h.queue,1,data,0,data.length); v@|<.  
} ~h_ _Y>  
u.|%@  
private static class MaxHeap{ \wD/TLS}  
CV\^gTPmx  
void init(int[] data){ EYn?YiVFU  
this.queue=new int[data.length+1]; nKzm.D gt_  
for(int i=0;i queue[++size]=data; %-yzU/`JF  
fixUp(size); ;  ?f+  
} o S=!6h  
} pJvPEKN  
o_`6oC"s  
private int size=0; Nd]F 33|X  
g3c<c S^l  
private int[] queue;  t1 YB  
Dc@O Mr  
public int get() { 5"@>>"3U  
return queue[1]; {Y@shf;  
} ~9 .=t'  
}< H>9iJ:  
public void remove() { jQ;/=9  
SortUtil.swap(queue,1,size--); -'g> i  
fixDown(1); &muBSQ-  
} ':fp|m)M  
file://fixdown 3nG.ah  
private void fixDown(int k) { +Ps.HW#NY  
int j; WI4<2u;  
while ((j = k << 1) <= size) { g%l ,a3"  
if (j < size %26amp;%26amp; queue[j] j++; 'o6}g p)  
if (queue[k]>queue[j]) file://不用交换 ",3v%$ >  
break; I{OizBom  
SortUtil.swap(queue,j,k); beBG40  
k = j; aaig1#a@1b  
} }ofb]_C,  
} g}v](Q  
private void fixUp(int k) { l<w7 \a6  
while (k > 1) { o[cOL^Xd1  
int j = k >> 1; La )M  
if (queue[j]>queue[k]) KR#,6  
break; ":$4/b6  
SortUtil.swap(queue,j,k); s-#EV  
k = j; q4[8\Ua  
} {6H[[7i  
} }lIc{R@H  
V*b/N  
} *sOb I(&  
3~T ~Bs  
} ekvs3a^  
(O{OQk;CF  
SortUtil: fr/EkL1Dl  
):'wxIVGI  
package org.rut.util.algorithm; [(@K;6o  
-y-}g[`  
import org.rut.util.algorithm.support.BubbleSort; 3A!a7]fW  
import org.rut.util.algorithm.support.HeapSort; gZ4' w`4r  
import org.rut.util.algorithm.support.ImprovedMergeSort; sNDo@u7  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5P\>$N1p  
import org.rut.util.algorithm.support.InsertSort; w\acgQ^%e  
import org.rut.util.algorithm.support.MergeSort; 7. <jdp  
import org.rut.util.algorithm.support.QuickSort; a2B71RT~  
import org.rut.util.algorithm.support.SelectionSort; 4W" A*A  
import org.rut.util.algorithm.support.ShellSort; [*^.$s(  
,gVVYH?qR  
/** E`oA(x7l  
* @author treeroot E xhih^[_  
* @since 2006-2-2 MvpJ0Y (  
* @version 1.0 RG{T\9]n  
*/ 9s^$tgH  
public class SortUtil { QMBT8x/+_'  
public final static int INSERT = 1; rNq* z,  
public final static int BUBBLE = 2; KkZx6A)$u  
public final static int SELECTION = 3; M YF ^zheD  
public final static int SHELL = 4; `-uE(qp  
public final static int QUICK = 5; ^wolY0p  
public final static int IMPROVED_QUICK = 6; S/XU4i:aV  
public final static int MERGE = 7; aDdGhB  
public final static int IMPROVED_MERGE = 8; \Ip)Lm0  
public final static int HEAP = 9; ;stuTj@vH  
Ab ,^y  
public static void sort(int[] data) { nZbI}kcm  
sort(data, IMPROVED_QUICK);  Y${'  
} :EV.nD7  
private static String[] name={ $XhMI;h  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8X,6U_>#a  
}; $(9QnH1KY  
[Kwj 7q`  
private static Sort[] impl=new Sort[]{ ~o!- [  
new InsertSort(), wtek5C^  
new BubbleSort(), "tCTkog3]  
new SelectionSort(), `MVqd16Y  
new ShellSort(), L(TM& ps\-  
new QuickSort(), P~trxp=k  
new ImprovedQuickSort(), rw'+2\  
new MergeSort(), '(5GR I<  
new ImprovedMergeSort(), GM6, LzH  
new HeapSort() ELCNf   
}; 3%+ ~"4&  
"Au4&Fu  
public static String toString(int algorithm){ KrpIH6  
return name[algorithm-1]; *&I>3;~%^}  
} Ljd`)+`D  
xG/Q%A  
public static void sort(int[] data, int algorithm) { J{ju3jo  
impl[algorithm-1].sort(data); 4f\NtQ)  
} W'@ |ob  
w ~*@TG  
public static interface Sort { H.ZIRt !RB  
public void sort(int[] data); ^&?,L@fW  
} R])Eg&  
AT"gRCU$4  
public static void swap(int[] data, int i, int j) { a!$kKOK  
int temp = data; >B{NxL3->  
data = data[j]; ~*Y#Y{  
data[j] = temp; FW|& iS$  
} `*8}q!.  
} t neTOj  
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