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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。 7310'wc  
插入排序: \L(jNN0_R  
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package org.rut.util.algorithm.support; t, %m-dU  
c-hc.i}!  
import org.rut.util.algorithm.SortUtil; q+9^rQ  
/** x,^-a  
* @author treeroot ZOfv\(iJ;  
* @since 2006-2-2 m~Pk ]~j  
* @version 1.0 ~:JAWs$\V  
*/ bji#ID2]%  
public class InsertSort implements SortUtil.Sort{ {oY"CZ2  
7=N%$]DKZ  
/* (non-Javadoc) 4C?{p%3c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PJZ;wqTD_  
*/ !f(A9V  
public void sort(int[] data) { 7kV$O(4  
int temp; oA5Qk3b:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }'Ap@4  
} B`QF;,3S  
} U=JK  
} 9c]$d  
H&ek"nP_  
} AT I=&O`  
UhW{KIW  
冒泡排序: KOe]JDU  
Kv* 1=HES  
package org.rut.util.algorithm.support; ;cf$u}+  
(KC08  
import org.rut.util.algorithm.SortUtil; )>h3IR  
)*}\fmOv{  
/** 0Lj;t/mG  
* @author treeroot !PoyM[Z"f  
* @since 2006-2-2 ^ q ba<#e  
* @version 1.0 iWeUsS%zpV  
*/ 5)f 'wVe  
public class BubbleSort implements SortUtil.Sort{ 1 0zM8<bl  
x3Cn:F  
/* (non-Javadoc) 8*8Y\"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e/Z{{FP%6  
*/ vVtkB$]L  
public void sort(int[] data) { WrwbLlE  
int temp; mIf)=RW  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;sA 5&a>!  
if(data[j] SortUtil.swap(data,j,j-1); 4'D^>z!c  
} c),UO^EqV  
} 4}D&=0IZ  
} w;@v#<q6  
} by9UwM=gp  
g.Ur~5r  
} G0: <#?<5  
w@2NXcmw  
选择排序: a`yCPnB(  
4;~xRg;u&*  
package org.rut.util.algorithm.support; ww %c+O/  
br88b`L  
import org.rut.util.algorithm.SortUtil; :@ &e~QP(  
JGq9RB]D$  
/** @8J*vY =e  
* @author treeroot LT{g^g  
* @since 2006-2-2 X_-/j.  
* @version 1.0 IrRy1][Qr  
*/ T#rUbi>""  
public class SelectionSort implements SortUtil.Sort { &O+S [~  
|b@`ykD  
/* /b{@']  
* (non-Javadoc) #pRbRT9  
* dj084q7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H)TKk%`7  
*/ GKg #nXS  
public void sort(int[] data) { JqLPJUr  
int temp; x s6!NY  
for (int i = 0; i < data.length; i++) { %mlH  
int lowIndex = i; |(x%J[n0+  
for (int j = data.length - 1; j > i; j--) { SgQmR#5  
if (data[j] < data[lowIndex]) { n=rmf*,?  
lowIndex = j; l{rHXST|  
} 71(ppsHk  
} Ld:-S,2  
SortUtil.swap(data,i,lowIndex); /!&eP3^  
} G@rh/b<$  
} [D|Uwq  
3J4OkwqD  
} uAYDX<Ja9  
0 Q>  
Shell排序: FFwu$S6e  
H RahBTd(z  
package org.rut.util.algorithm.support; BpFX e7  
^,'KmZm=  
import org.rut.util.algorithm.SortUtil; @pvQci  
y1Br4K5C  
/** kazgI>"Q8  
* @author treeroot I&8!V)r)  
* @since 2006-2-2 Wf:X) S7  
* @version 1.0 N["M "s(N  
*/ J|V*g]#kP  
public class ShellSort implements SortUtil.Sort{ :ldI1*@i<  
J'#o6Ud  
/* (non-Javadoc) SPT x-b[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =`}|hI   
*/ <vg|8-,#m  
public void sort(int[] data) { 1(aib^!B  
for(int i=data.length/2;i>2;i/=2){ MkZoHzg}c  
for(int j=0;j insertSort(data,j,i); Xa}y.qH  
} yYJ +vs  
} }+NlY D:qF  
insertSort(data,0,1); 29@m:=-}7  
} &z\?A2Mw%  
$\oe}`#o  
/** &xj,.;  
* @param data AA|G &&1y  
* @param j 9Z2aFW9  
* @param i =;8q`  
*/ H-& ktQWK3  
private void insertSort(int[] data, int start, int inc) { xjDaA U,  
int temp; q/7T-"q/G  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); L{f0r!d|  
} Ov:U3P?%  
} t]t(/x#  
} ]R"n+LnI:=  
<ihJp^kgQ  
} BW`Tw^j  
p)7U%NMc(*  
快速排序: A8nf"mRD:  
k~Y_%#_  
package org.rut.util.algorithm.support; /ubGa6N  
tp V61L   
import org.rut.util.algorithm.SortUtil; @!\lt$  
ewYk>  
/** KmF+3g~#s  
* @author treeroot k V'0rb  
* @since 2006-2-2 z\J#d 1e  
* @version 1.0 "8[Vb#=*e  
*/ Ip,0C8T`Q  
public class QuickSort implements SortUtil.Sort{ u"q!p5P%q  
:=`N2D  
/* (non-Javadoc) =5p?4/4 J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hG/Z65`&  
*/ "Bn]-o|r  
public void sort(int[] data) { vdulrnGqL  
quickSort(data,0,data.length-1); `Z#]lS?  
} pKL^ <'w0  
private void quickSort(int[] data,int i,int j){ U,2\ TBz  
int pivotIndex=(i+j)/2; 44hz,  
file://swap 40LA G  
SortUtil.swap(data,pivotIndex,j); V,3$>4x  
w`Z@|A  
int k=partition(data,i-1,j,data[j]); HX:^:pF}  
SortUtil.swap(data,k,j); N;av  
if((k-i)>1) quickSort(data,i,k-1); _@]@&^K$E  
if((j-k)>1) quickSort(data,k+1,j); :e4[isI  
-QydUr/(o  
} \xtmd[7lb<  
/** j98>Jr\  
* @param data J@9E20$  
* @param i ZnB|vfL?  
* @param j x6~`{N1N M  
* @return p~u11rH  
*/ ~u80v h'  
private int partition(int[] data, int l, int r,int pivot) { 0>?78QL9<  
do{ 7G8M+i3q/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8!dA1]2;  
SortUtil.swap(data,l,r); e,0Gc-X[B  
} S$fCO$bU  
while(l SortUtil.swap(data,l,r); ^sVB:?  
return l; F;dUqXUu  
} aSNTm8SYX  
|(1z ?Spbe  
} <j89HtCz  
0 Pa\:^/6  
改进后的快速排序: RiAY>:  
`Df)wNN1  
package org.rut.util.algorithm.support; ~%:23mIk  
DadlCEZv  
import org.rut.util.algorithm.SortUtil; !~aDmY 2  
WAbt8{$D  
/** 7b[vZNi_  
* @author treeroot }q@Jh*  
* @since 2006-2-2 ,`< [ej   
* @version 1.0 faaFmEC  
*/ >sE{c>R%  
public class ImprovedQuickSort implements SortUtil.Sort { )0Lv-Gs  
lo!_;`v=U  
private static int MAX_STACK_SIZE=4096; fDY#&EO: %  
private static int THRESHOLD=10; h3Z0NJ=xM  
/* (non-Javadoc) hAp<$7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KGb3n;]  
*/ |Gh~Zu p  
public void sort(int[] data) { U ()36  
int[] stack=new int[MAX_STACK_SIZE]; -^LEGKN  
H<YS2Ed  
int top=-1; }<kpvd+ps=  
int pivot; m-No 8)2yA  
int pivotIndex,l,r; =h 2zIcj  
"S@%d(lg  
stack[++top]=0; ~nG?>  
stack[++top]=data.length-1; U_c.Z{lC4  
]`Y;4XR  
while(top>0){ :X;' 37o#q  
int j=stack[top--]; K%A:W  
int i=stack[top--]; hK&/A+*  
$u./%JS  
pivotIndex=(i+j)/2; ]\<^rEU  
pivot=data[pivotIndex]; ?-0>Wbg  
@d Coh-Q3  
SortUtil.swap(data,pivotIndex,j); f#UT~/~bL2  
}-R|f_2Hp  
file://partition Am? dHP  
l=i-1; lf\]^yM #  
r=j; n-n{+ Dl!  
do{ aJ1<X8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); n089tt=TE  
SortUtil.swap(data,l,r); z@3t>k|K  
} />z E$)'M  
while(l SortUtil.swap(data,l,r); a:tCdnK/  
SortUtil.swap(data,l,j); jn9KQe\3  
iWZrZ5l  
if((l-i)>THRESHOLD){ g2v 0!  
stack[++top]=i; 4b B)t#  
stack[++top]=l-1; B6iH[dTy_  
} J!,<NlP0K  
if((j-l)>THRESHOLD){ -%lA=pS{Fq  
stack[++top]=l+1; 'Bp7LtG92  
stack[++top]=j; Vn-y<*np  
} ;V~[kF=t0  
c _li.]P  
} 0a??8?Q1G  
file://new InsertSort().sort(data); Q9 b.]W  
insertSort(data); E1'HdOh&z  
} j ,' $i[F'  
/** 6WQT,@ ?  
* @param data c3&;Y0SD  
*/ h7|#7 d  
private void insertSort(int[] data) { r9Wk7?w)  
int temp; O$ 7R<V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !A )2<<4  
} 9""e*-;Mi  
} ? -PRS.=%  
} l* =\0  
i[_WO2  
} [kIiKLX  
ZzNp#FrX"  
归并排序: x4PA~R  
B`x rdtW  
package org.rut.util.algorithm.support; Fcc\hV;  
OsMU>v }m  
import org.rut.util.algorithm.SortUtil; RHdcRojF  
)B86  
/** -lL(:drn  
* @author treeroot 8[Ssrk  
* @since 2006-2-2 B\,pbOE?#  
* @version 1.0 9@LL_r`?<  
*/ VL5GX (  
public class MergeSort implements SortUtil.Sort{ o.ntzN  
[;`B   
/* (non-Javadoc) TzT(aWP"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v"VpE`z1#  
*/ 5J^S-K^r  
public void sort(int[] data) { 82.::J'e  
int[] temp=new int[data.length]; A~_*vcz  
mergeSort(data,temp,0,data.length-1); "&s9;_9  
} nCZ&FNi{O~  
5G"DgG*<  
private void mergeSort(int[] data,int[] temp,int l,int r){ u:Fa1 !4JR  
int mid=(l+r)/2; E)l0`83~^  
if(l==r) return ; iYi3x_A`  
mergeSort(data,temp,l,mid); wJs #rkW  
mergeSort(data,temp,mid+1,r); 7{%_6b"  
for(int i=l;i<=r;i++){ );o2e V  
temp=data; ~)X yrKw  
} u]K&H&AxT  
int i1=l; 4NaL#3  
int i2=mid+1; 7JvBzD42  
for(int cur=l;cur<=r;cur++){ %l4LX~-:  
if(i1==mid+1) kcg{z8cd'r  
data[cur]=temp[i2++]; zO BLF|L=  
else if(i2>r) j\kT H  
data[cur]=temp[i1++]; `52+.*J+%  
else if(temp[i1] data[cur]=temp[i1++]; \':'8:E  
else ZS*PY,  
data[cur]=temp[i2++]; ,%>]  
} ,@mr})s  
} ?RyeZKf  
&M p??{g  
} =P}ob eY  
$l05VZ  
改进后的归并排序: 9Z.Xo kg  
7>#?-, B  
package org.rut.util.algorithm.support; ZG29q>  
=hZ#Z]f  
import org.rut.util.algorithm.SortUtil; TI^W=5W@@  
}^!8I7J.  
/** $T.u Iq  
* @author treeroot N8hiv'3  
* @since 2006-2-2 I$. HG]  
* @version 1.0 w$Zi'+&*  
*/ vGe];  
public class ImprovedMergeSort implements SortUtil.Sort { 0_F6t-  
q~esxp  
private static final int THRESHOLD = 10; Ass :  
2a=3->D&  
/* us j:I`>  
* (non-Javadoc) >Q5et1c  
* ?VUU[h8"v5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k!?sHUAj  
*/ d}@b 3   
public void sort(int[] data) { K/xn4N_UX  
int[] temp=new int[data.length]; 99<]~,t=5  
mergeSort(data,temp,0,data.length-1); Gw!VPFV>W  
} sIUhk7Cd8  
'%Cc!63t*  
private void mergeSort(int[] data, int[] temp, int l, int r) { :1>h,NKC>  
int i, j, k; ;a"g<v  
int mid = (l + r) / 2; Yatd$`,hW  
if (l == r) b 6kDkE  
return; s7(NFX5  
if ((mid - l) >= THRESHOLD) \wMqVRPoQ  
mergeSort(data, temp, l, mid); 6T"4<w[  
else ``X1xiB  
insertSort(data, l, mid - l + 1); z$64Ep#  
if ((r - mid) > THRESHOLD) +D7>$&BD  
mergeSort(data, temp, mid + 1, r); x*H,eY3  
else * {avx  
insertSort(data, mid + 1, r - mid); 8 5 L<  
V{jQ=<)@e  
for (i = l; i <= mid; i++) { JRti2Mu  
temp = data; R[#Np`z  
} {5 V@O_*{  
for (j = 1; j <= r - mid; j++) { |7Dc7p"D  
temp[r - j + 1] = data[j + mid]; QZwUv<*  
} C{{RU7iqc&  
int a = temp[l]; 4S%s=v w  
int b = temp[r]; _3Kow{y\  
for (i = l, j = r, k = l; k <= r; k++) { Q y4eDv5  
if (a < b) { eELLnU{"  
data[k] = temp[i++]; {ef9ov Xk  
a = temp; ]|m?pt  
} else { nXU`^<nA  
data[k] = temp[j--]; u[:-^H  
b = temp[j]; YR'dl_  
} V ,+&.A23  
} ttP|}|O  
} ! 3 ;;6  
Vs1H)T%  
/** 1k)31GEQw  
* @param data 83(-/ y  
* @param l Z;ze{Vb  
* @param i v(0IQ  
*/ As{Q9o5j/  
private void insertSort(int[] data, int start, int len) { e w%rc.;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);  !n`9V^`  
} 7MbV|gM}  
} i C)+5L#'  
} "]SA4Ud^  
} rF^H\U:w  
.8%&K0  
堆排序: &0b\E73  
pyw]ydB  
package org.rut.util.algorithm.support; (G6lr%d  
X-4(oE  
import org.rut.util.algorithm.SortUtil; iv!;gMco  
+X%pUe  
/**  l;;,[xhq  
* @author treeroot UuKW`(?^  
* @since 2006-2-2 /4I9Elr  
* @version 1.0 1La?x'{2MP  
*/ xcQD]"   
public class HeapSort implements SortUtil.Sort{ *Uw"`l  
gB<1;_KW  
/* (non-Javadoc) m2a [ E0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZGw 6Bd_I  
*/ %!\iII  
public void sort(int[] data) { +@^FUt=tq  
MaxHeap h=new MaxHeap(); : uxJGx  
h.init(data); (.J6>"K<  
for(int i=0;i h.remove(); ).32Im!;#R  
System.arraycopy(h.queue,1,data,0,data.length); 7VIfRN{5n  
} &q7}HO/ @  
Mdw"^x$7  
private static class MaxHeap{ ~hxW3e  
YB+My~fw{l  
void init(int[] data){ x%yzhIRR  
this.queue=new int[data.length+1];  ^:^  
for(int i=0;i queue[++size]=data; "8$Muwm  
fixUp(size); jX7;hQ+P  
} swz)gh-*  
} HIq e~Vc  
}~v&  
private int size=0; a9uMgx}  
rDWwu '  
private int[] queue; /EW=OZ/  
Wh)>E!~ 9  
public int get() { %oOSmt  
return queue[1]; v t_lM  
} P67*-Ki  
,7I    
public void remove() { "]bOpk T  
SortUtil.swap(queue,1,size--); $ba*=/{[q  
fixDown(1); >~l^E!<i-u  
} #[&9~za'"m  
file://fixdown (GoxiX l  
private void fixDown(int k) { jL{k!V`s  
int j; 84lT# ^q  
while ((j = k << 1) <= size) { &s{d r  
if (j < size %26amp;%26amp; queue[j] j++; U6F7dT  
if (queue[k]>queue[j]) file://不用交换 3>v-,S+  
break; c;,-I  
SortUtil.swap(queue,j,k); b{CS1P  
k = j; (sW$2a  
} mKLWz1GZ  
} cte Wl/v  
private void fixUp(int k) { 12V-EG i  
while (k > 1) { M_O)w^ '  
int j = k >> 1; ~#dfZa&   
if (queue[j]>queue[k]) * EPJeblAV  
break;  6o1[fr  
SortUtil.swap(queue,j,k); Y%!k'\n[2  
k = j; {wl7&25  
} 8{ +KNqz  
} cpm *m"Nk  
y5j ;Daq  
} !<<wI'8  
C{G;G@/7  
} Byh!Snoe  
. )E1|U[L  
SortUtil: t9.| i H  
7ju^B/ 7  
package org.rut.util.algorithm; w5vzj%6i  
DH"_.j  
import org.rut.util.algorithm.support.BubbleSort; q>6RO2,  
import org.rut.util.algorithm.support.HeapSort; GF36G?iEi  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5,BvT>zFY  
import org.rut.util.algorithm.support.ImprovedQuickSort; y[/:?O}g4  
import org.rut.util.algorithm.support.InsertSort; <OrQbrWQa  
import org.rut.util.algorithm.support.MergeSort; h %5keiA  
import org.rut.util.algorithm.support.QuickSort; 5S ) N&%  
import org.rut.util.algorithm.support.SelectionSort; zCS&w ~  
import org.rut.util.algorithm.support.ShellSort; F9>"1  
.7+"KP:  
/** '(zP;  
* @author treeroot 09=w  
* @since 2006-2-2 _U o3_us  
* @version 1.0 w ^ X@PpP  
*/ /vPr^Wv  
public class SortUtil { ,uD}1 G<u  
public final static int INSERT = 1; [[O4_)?el  
public final static int BUBBLE = 2; ;3iWV"&_A  
public final static int SELECTION = 3; Q$5%9  
public final static int SHELL = 4; 4WPco"xH!  
public final static int QUICK = 5; j>5X^Jd  
public final static int IMPROVED_QUICK = 6; dpT?*qLM  
public final static int MERGE = 7; LlD=c  
public final static int IMPROVED_MERGE = 8; w3;T]R*  
public final static int HEAP = 9; RSx{Gbd4X  
!/]z-z2>  
public static void sort(int[] data) { y"iK)SH  
sort(data, IMPROVED_QUICK); 94?/Rhs5  
} h(i_'P?  
private static String[] name={ S3Fj /2Q8  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" s~A:*2\  
}; F5+!Gb En  
a :CeI  
private static Sort[] impl=new Sort[]{ OX}ZdM!&f  
new InsertSort(), V"T5<HA9  
new BubbleSort(), w6ck wn,  
new SelectionSort(), 4 g8t  
new ShellSort(), EL6<%~,V"I  
new QuickSort(), _`Dz%(c  
new ImprovedQuickSort(), \SBAk h  
new MergeSort(), vvLzUxV  
new ImprovedMergeSort(),  `ghNS  
new HeapSort() !>WW(n07Ma  
}; H{uR+&<  
,nWZJ&B  
public static String toString(int algorithm){ ^[EXTBk@:  
return name[algorithm-1]; u}7r\MnwK,  
} .PCbGPbk  
miV8jaV  
public static void sort(int[] data, int algorithm) { ! QKec  
impl[algorithm-1].sort(data); L> rW S-  
} +D?Re%HI  
uFG ;AY|  
public static interface Sort { 0xV[C4E[6  
public void sort(int[] data); ?SX0e(+}}  
} 1]aya(  
,w,)n^  
public static void swap(int[] data, int i, int j) { A QPzId*z  
int temp = data; 6-\C?w A  
data = data[j]; N::.o+1  
data[j] = temp; ,]4.|A_[Rq  
} 1#x@  
} lgC^32y  
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