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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。 jHx)q|2\  
插入排序: \CKf/:"  
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package org.rut.util.algorithm.support; ?5Ub&{  
PTf.(B"z  
import org.rut.util.algorithm.SortUtil; !vwx0  
/** Z:kX9vw.  
* @author treeroot 1v"r8=Wt  
* @since 2006-2-2 c ;@k\6  
* @version 1.0 maINp"#  
*/ 6~y7A<[^  
public class InsertSort implements SortUtil.Sort{ M hJ;)(  
$/XR/  
/* (non-Javadoc) *s}j:fJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @uzzyp r>  
*/ DNp4U9  
public void sort(int[] data) { Jz Z9ua  
int temp; t1%<l  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u4,b%h.  
} ,Y_[+  
} uL[%R2  
} )9mUE*[  
TU,k( `tn<  
} Kj`sq":Je0  
V9r58hbVT  
冒泡排序:  l6uU S  
#{L !o5  
package org.rut.util.algorithm.support; Xy'qgK?  
.jps6{  
import org.rut.util.algorithm.SortUtil; 3NA G}S  
*iW$>Yjb  
/** M!E#T-)  
* @author treeroot |Je+y;P7  
* @since 2006-2-2 W;9Jah.  
* @version 1.0 Q`4]\)Dp  
*/ $h|rd+},  
public class BubbleSort implements SortUtil.Sort{ 4 fxD$%9  
TV&4m5  
/* (non-Javadoc) B>TI dQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z<t(h=?  
*/ *E-VS= #  
public void sort(int[] data) { <0hJo=6a8  
int temp; GOeYw[Vh  
for(int i=0;i for(int j=data.length-1;j>i;j--){ YvP u%=eF  
if(data[j] SortUtil.swap(data,j,j-1); *;I F^u1  
} \p&a c&]  
} !agtgS$qII  
} :/ yR  
} Q(e3-a  
+v}R-gNR  
} +^6v%z  
0- 'f1 1S  
选择排序: 9ywPWT[^  
RL;>1Q,H  
package org.rut.util.algorithm.support; J&IFn/JK$  
tt7l%olw  
import org.rut.util.algorithm.SortUtil; D(]])4  
uPtHCP6  
/** 7v~\c%1V  
* @author treeroot cP~?Iz8nD  
* @since 2006-2-2 XU}sbbwu  
* @version 1.0 ?+bDFM}  
*/ gl4|D  
public class SelectionSort implements SortUtil.Sort { 0*.> >rI  
8;YN`S!o  
/* y/}>)o4Q  
* (non-Javadoc) |Gw[vY  
* L|3wG Y9E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gr/o!NC  
*/ R":nG7o  
public void sort(int[] data) { wghz[qe  
int temp; Ass8c]H@  
for (int i = 0; i < data.length; i++) { <Dr*^GX>?  
int lowIndex = i; ,cvLvN8  
for (int j = data.length - 1; j > i; j--) { gJy Ft8Z<  
if (data[j] < data[lowIndex]) { QPH2TXw  
lowIndex = j; M-2:$;D  
} "$Wi SR  
} l_!.yV{  
SortUtil.swap(data,i,lowIndex); KJwkkCE/=  
} 2wWL]`(E  
} z:aT5D  
COw]1 R  
} 9 GdrJ~h  
S!GjCog^J  
Shell排序: 'U)|m  
#pxc6W /  
package org.rut.util.algorithm.support; Bu'PDy~W,  
6t5)rlT  
import org.rut.util.algorithm.SortUtil; #zcp!WE.OI  
F*QD\sG:  
/** >NN|vj  
* @author treeroot G6zFCgFJ^y  
* @since 2006-2-2 E\r5!45r  
* @version 1.0 :\*hAV1i  
*/ icF -`m  
public class ShellSort implements SortUtil.Sort{ U/M(4H3>H  
o_gpBaWD  
/* (non-Javadoc) #ZIV>(Q\H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zjh&?G]:G  
*/ i4.s_@2Y  
public void sort(int[] data) { eb:mp/  
for(int i=data.length/2;i>2;i/=2){ l%"eQ   
for(int j=0;j insertSort(data,j,i); lC6#EU;  
} %2<chq  
} joifIp_  
insertSort(data,0,1); Z{/C4" F  
} `"m"qUd  
fPHv|_XM>  
/**  UJoWTx  
* @param data  "t8mQ;n  
* @param j `4Z#/g  
* @param i )F<<M+q=  
*/ 4(&00#Yxg2  
private void insertSort(int[] data, int start, int inc) { 71Ssk|L  
int temp; x#| P-^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); neQ2+W%oj  
} y]?%2ud/=  
} ~SJOynSz,  
} nP?(9;3*  
S'Q$N-Dy  
} `S<uh9/  
J mFzSR?}  
快速排序: F& H~JJ  
1_/\{quE  
package org.rut.util.algorithm.support; >S{1=N@Ev=  
i(,R$AU  
import org.rut.util.algorithm.SortUtil; 8dUwJ"<5  
X!,Ngmw.  
/** rN{&$+"2  
* @author treeroot %dL|i2+*8  
* @since 2006-2-2 "=| yM~V  
* @version 1.0 _J   
*/ X\$|oiR  
public class QuickSort implements SortUtil.Sort{ c.&vWmLSGE  
jRB:o?S  
/* (non-Javadoc) 6! g3Juh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4pq>R  
*/ /R k5n  
public void sort(int[] data) { fdd3H[  
quickSort(data,0,data.length-1); ]$nJn+85@b  
} s&y  
private void quickSort(int[] data,int i,int j){ 4_t aCK  
int pivotIndex=(i+j)/2; %)l2dK&9"j  
file://swap N ~M:+ \  
SortUtil.swap(data,pivotIndex,j); &.7\{q\(  
?b8NEVjw  
int k=partition(data,i-1,j,data[j]); 15U=2j*.b  
SortUtil.swap(data,k,j); R,Tw0@{O*  
if((k-i)>1) quickSort(data,i,k-1); ,3GM'e{hV  
if((j-k)>1) quickSort(data,k+1,j); w ^`n  
R) @ k|  
} d-N<VVcy\  
/** ])~*)I~Y  
* @param data 3QUe:8  
* @param i D9H|]W~   
* @param j <ze' o.c  
* @return )CdglPK  
*/ `?=AgGg  
private int partition(int[] data, int l, int r,int pivot) { qg.[M*  
do{ !h&hPY1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _vU,avw  
SortUtil.swap(data,l,r); ,=oq)Fm]  
} .#j)YG  
while(l SortUtil.swap(data,l,r); pb E`Eq  
return l; S*#y7YKI  
} 30<dEoF  
v l{hE~  
} o{UwUMw5`  
"[GIW+ui  
改进后的快速排序: 4sZ^:h,1  
>454Yir0Mk  
package org.rut.util.algorithm.support; X dB#+"[  
 & .(ZO]  
import org.rut.util.algorithm.SortUtil; 7Zu!s]t  
/B1< N}  
/** \3)%p('  
* @author treeroot A%+~   
* @since 2006-2-2 CF42KNq  
* @version 1.0 YLobBtXc9  
*/ Ubn5tN MK  
public class ImprovedQuickSort implements SortUtil.Sort { msY"Y*4  
>r]# 77d  
private static int MAX_STACK_SIZE=4096; g4Hq<W"  
private static int THRESHOLD=10; }E/L:  
/* (non-Javadoc) N.-Ryj&9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) } doj4  
*/ -'q=oTZ  
public void sort(int[] data) { m"x~Fjvd  
int[] stack=new int[MAX_STACK_SIZE]; %],.?TS2V  
z9dVT'  
int top=-1; E>'pMw  
int pivot; "n]B~D  
int pivotIndex,l,r; %&gx@ \v  
wEDU*}~  
stack[++top]=0; -h.YQC`  
stack[++top]=data.length-1; B0 R[f  
e2B~j3-?z  
while(top>0){ j./bVmd.  
int j=stack[top--]; >Q+EqT  
int i=stack[top--]; |qbJ]v!  
k+i}U9c"  
pivotIndex=(i+j)/2; 2d3wQ)2  
pivot=data[pivotIndex]; SxH}/I|W  
9m6w.:S  
SortUtil.swap(data,pivotIndex,j); /pb7  
4 &|9304<H  
file://partition "lmiGR*u  
l=i-1; 5utj$ha2  
r=j; IRS^F;)  
do{ }qlz^s  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =e._b 7P  
SortUtil.swap(data,l,r); YKM(qh2  
} {L4^IKI  
while(l SortUtil.swap(data,l,r); xc*ys-Nv  
SortUtil.swap(data,l,j); {g )kT_  
Vq<|DM3z<  
if((l-i)>THRESHOLD){ 0q`'65 lx  
stack[++top]=i; R2~Rqlti  
stack[++top]=l-1; BAKfs/N  
} K@>v|JD  
if((j-l)>THRESHOLD){ <#R7sco'  
stack[++top]=l+1; +[F9Q,bH@b  
stack[++top]=j; dR=SW0Oa{  
} YK[O#V  
?2=c'%w7  
} ^OQ_iPPI  
file://new InsertSort().sort(data); /?J_7Lg  
insertSort(data); U`8)rtYw  
} ,5L &$Q6  
/** oFIs,[ Go  
* @param data |x kixf4zz  
*/ H"&N<"hw  
private void insertSort(int[] data) { iySmNI  
int temp; <B``/EX^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  u?'X%'K*  
} bpU^|r^W  
} _D+7w'8h  
} [R Ch7FE23  
, 1`eH[  
} P)}:lTe  
UHCx}LGe  
归并排序: U 9 k}y  
(sl]%RjGa  
package org.rut.util.algorithm.support; iu1iO;q  
"thu@~aC  
import org.rut.util.algorithm.SortUtil; /aPq9B@  
`/|=eQ")o@  
/** <$=8'$T81  
* @author treeroot n1;V2k{uV  
* @since 2006-2-2 {< wq}~  
* @version 1.0 m3|,c[M1  
*/ Hv IN'  
public class MergeSort implements SortUtil.Sort{ p,1RRbyc  
0<Pe~i_=  
/* (non-Javadoc) @?%"nK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i2!{.*.  
*/ \NSwoP  
public void sort(int[] data) { y-Ol1R3:c#  
int[] temp=new int[data.length]; hZJ Nh,,w  
mergeSort(data,temp,0,data.length-1); /3c1{%B\  
} <w:fR|O  
C<7J5  
private void mergeSort(int[] data,int[] temp,int l,int r){ ! TRiFD  
int mid=(l+r)/2; % -SP  
if(l==r) return ; 97&6iTYA  
mergeSort(data,temp,l,mid); |LjCtm)@+  
mergeSort(data,temp,mid+1,r); <T&$1m{  
for(int i=l;i<=r;i++){ kO9yei  
temp=data; >l7 o/*4  
} M,{F/Yu  
int i1=l; :g\qj? o  
int i2=mid+1; 9c?izpA  
for(int cur=l;cur<=r;cur++){ lW2qVR  
if(i1==mid+1) odhgIl&u  
data[cur]=temp[i2++]; 3NJH"amk  
else if(i2>r) 5&xvY.!27V  
data[cur]=temp[i1++]; 7u}r^+6_o  
else if(temp[i1] data[cur]=temp[i1++]; q6DhypB  
else onmO>q*  
data[cur]=temp[i2++]; Aqc(  
} P&SR;{:y  
} Uex b>|  
uL= \t=  
} jjbw.n+1  
Xgl>kJy<#  
改进后的归并排序: i4-L!<bJ  
{:dE_tqo  
package org.rut.util.algorithm.support; p75w^  
cK?t]%S  
import org.rut.util.algorithm.SortUtil; Q{a!D0;4v  
5 QT9  
/** 8q0 .yhb  
* @author treeroot k+i=0 P0mf  
* @since 2006-2-2 mPh;  
* @version 1.0 LnL<WI*Pq  
*/ kjmF-\  
public class ImprovedMergeSort implements SortUtil.Sort { q'@UZ$2  
9 o18VJR  
private static final int THRESHOLD = 10; V{*9fB#4L  
_1hqD EM  
/* Q2 edS|  
* (non-Javadoc) -y AIrvO1q  
* W"0#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Yhpj}KZ  
*/ un\^Wmbw  
public void sort(int[] data) { fXqe7[  
int[] temp=new int[data.length]; 61KJ( rSX3  
mergeSort(data,temp,0,data.length-1); }1>a71  
} yQW\0&a$  
&]M<G)9  
private void mergeSort(int[] data, int[] temp, int l, int r) { A< Na,EC  
int i, j, k;  z/ i3  
int mid = (l + r) / 2; ,=ICSS~9l  
if (l == r) Vz#cb5:g  
return; V&>7i9lEz  
if ((mid - l) >= THRESHOLD) y^XwJX-f  
mergeSort(data, temp, l, mid); -cW5v  
else }I;W  
insertSort(data, l, mid - l + 1); vrbS-Z<S9  
if ((r - mid) > THRESHOLD) [ wROIvV  
mergeSort(data, temp, mid + 1, r); $M8'm1R9  
else B}jZ~/D}  
insertSort(data, mid + 1, r - mid);  O{4m-;  
 ;js7rt  
for (i = l; i <= mid; i++) { }6KL   
temp = data; 6xOR,p>E  
} `?$R_uFh:  
for (j = 1; j <= r - mid; j++) { J?]W!V7C  
temp[r - j + 1] = data[j + mid]; 1zM`g_(#  
} t (1z+  
int a = temp[l]; (PNvv/A  
int b = temp[r]; I;`V*/s8"  
for (i = l, j = r, k = l; k <= r; k++) { #"Zr#P{P  
if (a < b) { l(`w]=t&  
data[k] = temp[i++]; bT;C8i4b\H  
a = temp; g &za/F  
} else { ;aF / <r  
data[k] = temp[j--]; ,aN/``j=  
b = temp[j]; S*]IR"YL  
} J3'"-,Hv  
} QVP $e`4  
} CeZ5Ti?F  
Q A%GK4F70  
/** |9Y9pked8  
* @param data 0I cyi#N  
* @param l >Kr,(8rA  
* @param i z(m*]kpL"  
*/ vS X 6~m  
private void insertSort(int[] data, int start, int len) { D"o>\Q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); n% *u;iG  
} gC3{:MC-G  
} wb{y]~&6K  
} *n*OVI8L  
} w&H ?;1  
;?y?s'>t&  
堆排序: REt()$ 7~  
+-oXW>`&  
package org.rut.util.algorithm.support; Mz06cw&  
-r,J>2`l  
import org.rut.util.algorithm.SortUtil; \\'!<Bn2d  
^GbyAYEp  
/** HU'd/5fun  
* @author treeroot +<iw|vr  
* @since 2006-2-2 hcBfau;r  
* @version 1.0 0VbZBLe  
*/ qvt~wJf<  
public class HeapSort implements SortUtil.Sort{ #mj+|/0  
:4WwCpgz,  
/* (non-Javadoc) Y3-P*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x,>=X` T  
*/ ="u(o(j"  
public void sort(int[] data) { uM\~*@   
MaxHeap h=new MaxHeap(); 1xx-}AIH#  
h.init(data); hA"N&v~  
for(int i=0;i h.remove(); tVe*J@i\$  
System.arraycopy(h.queue,1,data,0,data.length); ,:#prT[P"  
} "NJ!A  
F;z FKvn  
private static class MaxHeap{ D~1nh%x_  
;Y~;G7  
void init(int[] data){ 2D-*Z=5^  
this.queue=new int[data.length+1]; 0]WM:6 h  
for(int i=0;i queue[++size]=data; R#r?<Ofw4  
fixUp(size); /,;9hx  
} G,XFS8{%  
} B!Qdf8We  
*</;:?  
private int size=0; w,l1&=d  
"'PDreS  
private int[] queue; xLGAP-mx]  
P#yS]F/  
public int get() { G U!XD!!&  
return queue[1]; +J^}"dG  
} } FFW,x  
Vb1@JC9b  
public void remove() { 2=#O4k.@  
SortUtil.swap(queue,1,size--); 8en85 pp8P  
fixDown(1);  b'ew Od=  
} xF,J[Aj  
file://fixdown C ]#R7G  
private void fixDown(int k) { ];< [Cln%  
int j; E7*]t_p"  
while ((j = k << 1) <= size) { yEz2F3[ S  
if (j < size %26amp;%26amp; queue[j] j++;  e%qMrR  
if (queue[k]>queue[j]) file://不用交换 doe[f_\  
break; bg$e80  
SortUtil.swap(queue,j,k); ^&,{  
k = j; XjX<?W  
} `j<'*v zo  
} ?5->F/f&  
private void fixUp(int k) { )ei+ewVZ  
while (k > 1) { 9(H8MUF0{  
int j = k >> 1; H\ NO4=  
if (queue[j]>queue[k]) Kj-`ru  
break; MjLyB^ M  
SortUtil.swap(queue,j,k); ?! kup  
k = j; ly{ ~X  
} .AV--oA~  
} Tn-H8;Hg  
3FS:]|oC  
} ha(hG3C  
!867DX3*  
} @@I2bHy vb  
*M8 4Dry`y  
SortUtil: 1dKLNE  
7g=Ze~aq  
package org.rut.util.algorithm; J"SAA0)@  
}b0qrr  
import org.rut.util.algorithm.support.BubbleSort; BgE]xm  
import org.rut.util.algorithm.support.HeapSort; K&S~IFy  
import org.rut.util.algorithm.support.ImprovedMergeSort; u{\`*dNx  
import org.rut.util.algorithm.support.ImprovedQuickSort; S4 tdW A  
import org.rut.util.algorithm.support.InsertSort; zKI(yC  
import org.rut.util.algorithm.support.MergeSort; F 6SIhf.;  
import org.rut.util.algorithm.support.QuickSort; 'T.> oP0>  
import org.rut.util.algorithm.support.SelectionSort; kDm=Cjxv  
import org.rut.util.algorithm.support.ShellSort; z~X]v["d  
K7y}R%Q F  
/** a#mdD:,cF  
* @author treeroot $+rdzsf)+/  
* @since 2006-2-2 FS']3uJ/  
* @version 1.0 ,@2O_O`:  
*/ 2 OGg`1XX  
public class SortUtil { '9b<r7\@  
public final static int INSERT = 1; 3nG(z>  
public final static int BUBBLE = 2; QXF>xZ~  
public final static int SELECTION = 3; N($j;<Q  
public final static int SHELL = 4; qC]D9 A  
public final static int QUICK = 5; %u!#f<"[  
public final static int IMPROVED_QUICK = 6; OtnYv  
public final static int MERGE = 7; ]P 2M  
public final static int IMPROVED_MERGE = 8; (apAUIE  
public final static int HEAP = 9; uT=sDWD :  
2Yyc`o0R;h  
public static void sort(int[] data) { W<58TCd  
sort(data, IMPROVED_QUICK); NW~n+uk5v  
} dLo%+V#/A  
private static String[] name={ ] e&"CF  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" .kBAUkL:  
}; 8^HMK$  
P+]39p{  
private static Sort[] impl=new Sort[]{ #%x4^A9 q  
new InsertSort(), 6C   
new BubbleSort(), 3L#KHTM  
new SelectionSort(), RJGf@am&  
new ShellSort(), n RXf\*"3  
new QuickSort(), kH{axMNc  
new ImprovedQuickSort(), _:TD{EO$  
new MergeSort(), BI}>"',  
new ImprovedMergeSort(), zf^!Zqn[8z  
new HeapSort() !iZ*ZPu  
}; G*n5`N@>7  
9WHkw@<R+  
public static String toString(int algorithm){ &&tQ,5H5  
return name[algorithm-1]; R*QL6t  
} C YnBZ  
r{Xh]U&>k  
public static void sort(int[] data, int algorithm) { /LJ?JwAvg5  
impl[algorithm-1].sort(data); bk"` hq  
} -BB5bsjA  
g*8sh  
public static interface Sort { h NP|  
public void sort(int[] data); ,Kdvt@vle  
} K34y3i_  
bu\,2t}B  
public static void swap(int[] data, int i, int j) { l%;)0gT  
int temp = data; -V<i4X<|,+  
data = data[j]; Inr ~9hz  
data[j] = temp; v6iV#yz3(  
} D<nTo&m_  
} >j\zj] -"  
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