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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。 CSD8?k]2  
插入排序: $zdJ\UX  
-_2= NA?t  
package org.rut.util.algorithm.support; eF2<L[9  
!g}9xIL  
import org.rut.util.algorithm.SortUtil; @z2RMEC~  
/** f2d"b+H#  
* @author treeroot F"bbU/5  
* @since 2006-2-2 ./6L&?*`~;  
* @version 1.0 ")LF;e  
*/ W0?yPP=.  
public class InsertSort implements SortUtil.Sort{ J%}}( G~  
{o]OxqE@  
/* (non-Javadoc) bFTWuM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N7jAPI@a\i  
*/ <:ZN  
public void sort(int[] data) { GWhb@K  
int temp; Ck[Z(=b$$:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); xi.;`Q^#  
} # - kyZ  
} 3)T5}_  
} ikY=}  
qV(Plt%  
} mp5]=6 ~:m  
O 4}cv  
冒泡排序: Dm5UQe  
'[A>eC++  
package org.rut.util.algorithm.support; mB!81%f%|  
X/.|S57  
import org.rut.util.algorithm.SortUtil; u]oS91  
Gud!(5'  
/** Cd (Ov5%  
* @author treeroot Nl(Aa5:!  
* @since 2006-2-2 c s hZR(b  
* @version 1.0 $ D45X<  
*/ ZkK +?:9  
public class BubbleSort implements SortUtil.Sort{ Ru sa &#[  
ZLO _5#<  
/* (non-Javadoc) BgE]xm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b?Vu9!  
*/ Y@pa+~[{h3  
public void sort(int[] data) { 7#<|``]zNf  
int temp; $x 2t0@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ S#ven&  
if(data[j] SortUtil.swap(data,j,j-1); _o`'b80;  
} L=VuEF  
} D9Q%*DLd$_  
} SR\#>Qwx_  
} {^ N = hI  
GHoPv-#  
} lk+)-J-lj'  
?C4a,%  
选择排序: 9aXm}  
, X|oCD  
package org.rut.util.algorithm.support; 3"<{YEj8U  
O[8Lp?  
import org.rut.util.algorithm.SortUtil; LtNG<n)_BH  
"3!4 hiU9  
/** m6JIq}CMb  
* @author treeroot z?cRsqf  
* @since 2006-2-2 }]f)Fz  
* @version 1.0 .&L#%C  
*/ i/WYjo  
public class SelectionSort implements SortUtil.Sort { D'</eJ  
#$#{QEh0}  
/* dLo%+V#/A  
* (non-Javadoc) ]5} =r  
* ZM5[ o m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7IFUsli]  
*/ P+]39p{  
public void sort(int[] data) { #%x4^A9 q  
int temp; 6C   
for (int i = 0; i < data.length; i++) { 3L#KHTM  
int lowIndex = i; RJGf@am&  
for (int j = data.length - 1; j > i; j--) { n RXf\*"3  
if (data[j] < data[lowIndex]) { (3 _2h4O  
lowIndex = j; *WOA",gZ  
} &hZcj dB  
} =n$,Vv4A  
SortUtil.swap(data,i,lowIndex); Gd"lB*^Ht  
} AR)&W/S)7,  
} X3q'x}{  
gmrj CLj  
} %Uuhi&PA-l  
=:#$_qR  
Shell排序: rj,Sk~0Q  
D3MuP p-v  
package org.rut.util.algorithm.support; ww[STg  
~C[R%%Gu  
import org.rut.util.algorithm.SortUtil; qA*QFQ'-  
uD<*g(R  
/** Q%@l`V)Rs  
* @author treeroot koaH31Q  
* @since 2006-2-2 ZfMJU  
* @version 1.0 XD*$$`+#  
*/ B9+oI c O  
public class ShellSort implements SortUtil.Sort{ P 0,]Ud  
<m9IZI Y<  
/* (non-Javadoc) RJ@d_~%U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DGp'Xx_8  
*/ 7 +?  
public void sort(int[] data) { lK}F>6^\  
for(int i=data.length/2;i>2;i/=2){ eZf-i1lJ  
for(int j=0;j insertSort(data,j,i); z07!i@ue~  
} RN!oflb  
} .w&{2,a3  
insertSort(data,0,1); /eZA AH  
} N7Dm,Q]  
'9i:b]Hru  
/** C[&L h_F\  
* @param data W"z!sf5U  
* @param j #{<Jm?sU  
* @param i &oNy~l o  
*/ P3(u+UI3  
private void insertSort(int[] data, int start, int inc) { }1'C!]j  
int temp; pNE!waR>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v!40>[?|p  
} S[*e K Z  
} .lRO; D  
} y8 `H*s@  
*bwLi h!}H  
} !sfUrUu  
ou@Dd4  
快速排序: t?{E_70W  
kvryDM  
package org.rut.util.algorithm.support; 3/4xP|  
{5_*tV<I  
import org.rut.util.algorithm.SortUtil; 5P+3D{  
V .$<  
/** >WG$!o+R  
* @author treeroot !*EHr09N7  
* @since 2006-2-2 # |2w^Kn  
* @version 1.0 3"&6rdF\jB  
*/ q!}&<w~|  
public class QuickSort implements SortUtil.Sort{ 4uDz=B+8y  
c1e7h l  
/* (non-Javadoc) U =T[-(:H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sL[,J[AN;  
*/ 1<pbO:r  
public void sort(int[] data) { @l BR;B"  
quickSort(data,0,data.length-1); ~9 K4]5K-  
} 7nfQ=?XNK  
private void quickSort(int[] data,int i,int j){ =7#)8p[  
int pivotIndex=(i+j)/2; M="%NxuS  
file://swap c5^i5de  
SortUtil.swap(data,pivotIndex,j); 4B!]%Mw;c  
 03_tt7  
int k=partition(data,i-1,j,data[j]); Rl<~:,D  
SortUtil.swap(data,k,j); ~(G]-__B<  
if((k-i)>1) quickSort(data,i,k-1); F|Jo|02  
if((j-k)>1) quickSort(data,k+1,j); eEupqOF*:W  
R6CxNPRJ  
} JF!!)6!2#  
/**  8tLkJOu  
* @param data !!dNp5h`  
* @param i }_XKO\  
* @param j S yX>zN!  
* @return 'szkn0  
*/ Y{um1 )k  
private int partition(int[] data, int l, int r,int pivot) { SIzW3y[  
do{ 8V^gOUF.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "'dt"x)  
SortUtil.swap(data,l,r); k45xtKS>d  
} A10/"Ec<u  
while(l SortUtil.swap(data,l,r); zgqe@;{  
return l; 8[ :FU  
} t~Ds)  
CKrh14ul  
} @(&ki~+   
JrS/"QSA  
改进后的快速排序: M HlP)'  
q<.^DO~$L  
package org.rut.util.algorithm.support; }Geip@Ot  
Pg7W:L7  
import org.rut.util.algorithm.SortUtil; y7$e7~}/  
3mpEF<z  
/** Fg`r:,(a  
* @author treeroot GfPe0&h  
* @since 2006-2-2 19&!#z  
* @version 1.0 Dy0cA| E  
*/ cAA J7?  
public class ImprovedQuickSort implements SortUtil.Sort { V=\&eS4^"  
+X"TiA7{j  
private static int MAX_STACK_SIZE=4096; e,|"9OK  
private static int THRESHOLD=10; ;]+kC  
/* (non-Javadoc) NuW9.6$Jrf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2}' &38wMT  
*/ RhXX/HFk  
public void sort(int[] data) { + ECV|mkk  
int[] stack=new int[MAX_STACK_SIZE]; !#g`R?:g  
3-~_F*%ST  
int top=-1; 5|&Sg}_  
int pivot; .KTDQA\  
int pivotIndex,l,r; %\Ig{Rj;  
J4xt!RW!  
stack[++top]=0; ${0Xq k  
stack[++top]=data.length-1; ,Ix7Yg[  
JKGUg3\~  
while(top>0){ jpT!di  
int j=stack[top--]; qdvGBdF  
int i=stack[top--]; =}u;>[3  
Ui'~d(F  
pivotIndex=(i+j)/2; 1 NLawi6  
pivot=data[pivotIndex]; )6^b\`  
Vr`UF0_3q  
SortUtil.swap(data,pivotIndex,j); z35n3q  
y @h^  
file://partition VqbMFr<k  
l=i-1; 9{?<.%  
r=j; Y=/HsG\W]  
do{ !\RR UH*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); rXo,\zI;u^  
SortUtil.swap(data,l,r); `Nc3I\tCM  
} kVe}_[{m  
while(l SortUtil.swap(data,l,r); 5/>G)&  
SortUtil.swap(data,l,j); %[&cy'  
y/4 4((O  
if((l-i)>THRESHOLD){ 64o`7  
stack[++top]=i; Td X6<fVV  
stack[++top]=l-1; >LwAG:Ud  
} GVCyVt[!-  
if((j-l)>THRESHOLD){ Et# }XVCJ  
stack[++top]=l+1; 3eFD[c%mN  
stack[++top]=j; ir3iW*5k  
} Jel%1'Dc^  
Pg|q{fc  
} m -7^$  
file://new InsertSort().sort(data); K\,&wU  
insertSort(data); ex&&7$CXc  
} MoO jM&9  
/** pJK puoiX  
* @param data NJLU +b yU  
*/ G2 xYa$&][  
private void insertSort(int[] data) { E!C~*l]wJx  
int temp; f.Q?-M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y')in7g  
} ukzXQe;l1  
} _av%`bb&z9  
} bXC;6xZV  
}us%G&A2u  
} _dIv{L!  
_H<ur?G  
归并排序: -Y2h vC  
C(7LwV  
package org.rut.util.algorithm.support; Hg*6I%D[So  
M@ ! {m  
import org.rut.util.algorithm.SortUtil; (*^_ wq-;  
/ QSK$ZDC  
/** 3[-L'!pOX3  
* @author treeroot ?v8B;="#w  
* @since 2006-2-2 VL7zU->  
* @version 1.0 OfbM]:}<3  
*/ u L/*,[}'  
public class MergeSort implements SortUtil.Sort{ f*bs{H'5  
3 3s.p'  
/* (non-Javadoc) 5 S7\m5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P=(\3ok  
*/ SI8mr`gJ  
public void sort(int[] data) { ]C}z3hhk  
int[] temp=new int[data.length]; :X,1KR  
mergeSort(data,temp,0,data.length-1); g>T'R Vb  
} [[LCEw  
xH; 4lw  
private void mergeSort(int[] data,int[] temp,int l,int r){ MpGWt#  
int mid=(l+r)/2; c R[DT04  
if(l==r) return ; s:i$s")  
mergeSort(data,temp,l,mid); (B7M*e  
mergeSort(data,temp,mid+1,r); /J wQ5  
for(int i=l;i<=r;i++){ }V6}>!Sb  
temp=data; gV$Lfkz  
} qwiM .b5  
int i1=l; )xT_RBR  
int i2=mid+1; gMFTZQsP  
for(int cur=l;cur<=r;cur++){ mVP@c&1w?  
if(i1==mid+1) E.}T.St  
data[cur]=temp[i2++]; 6*tI~  
else if(i2>r) \6 2|w HX  
data[cur]=temp[i1++]; OI::0KOv  
else if(temp[i1] data[cur]=temp[i1++]; Q~te`  
else uRxo,.}c  
data[cur]=temp[i2++]; ,.x1+9X  
} : -te  
} CP["N(fF  
A ElNf:  
} .y#@~H($  
!pQQkZol  
改进后的归并排序: ppmDmi~X  
6]CY[qEaR$  
package org.rut.util.algorithm.support; %h2U(=/:  
1g^N7YF  
import org.rut.util.algorithm.SortUtil; 87r#;ND  
nhiCV>@y  
/**  G\ru%  
* @author treeroot X3<<f`X  
* @since 2006-2-2 dl;^sn0s  
* @version 1.0 G%Wjtrpj  
*/ OqHD=D[  
public class ImprovedMergeSort implements SortUtil.Sort { {6 C!^ 5  
_LCK|H%v'  
private static final int THRESHOLD = 10; BQ2DQ7q  
-jFvDf,M,D  
/* }9:d(B9;  
* (non-Javadoc) G# .z((Rj  
* m80QMosp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u\<z5O  
*/ l" *zr ;#  
public void sort(int[] data) { tg7%@SI5^-  
int[] temp=new int[data.length]; HT[<~c  
mergeSort(data,temp,0,data.length-1); yAW%y  
} <x53b/ft  
3l-8TR  
private void mergeSort(int[] data, int[] temp, int l, int r) { sJw#^l  
int i, j, k; CM!bD\5  
int mid = (l + r) / 2; ~%bz2Pd%  
if (l == r) gY=nU,;  
return; Fnzv&  
if ((mid - l) >= THRESHOLD) ,_F1g<^@u  
mergeSort(data, temp, l, mid); -'*B%yy  
else d+\o>x|Y!Y  
insertSort(data, l, mid - l + 1); jLM1 ~`&  
if ((r - mid) > THRESHOLD) X8GIRL)lJ  
mergeSort(data, temp, mid + 1, r); )8!""n~  
else J XPE9uH  
insertSort(data, mid + 1, r - mid); Nw/4z$].J  
=NQDxt}  
for (i = l; i <= mid; i++) { @9~6+BZOq  
temp = data; zw_Xh~4"b  
} UQ}[2x(Kb  
for (j = 1; j <= r - mid; j++) { eYOwdTrq  
temp[r - j + 1] = data[j + mid]; +j%!RS$ko  
} )4bBR@QM  
int a = temp[l]; s%1O}X$c  
int b = temp[r]; qm{(.b^  
for (i = l, j = r, k = l; k <= r; k++) { ^"(C Zvq  
if (a < b) { +>M^p2l*&  
data[k] = temp[i++];  |'aGj  
a = temp; ~*79rDs{  
} else { v1oq[+  
data[k] = temp[j--]; si.ZTG9m  
b = temp[j]; AD_")_B|i  
}  zN: VT&  
} bzF>Efza  
} -B*= V  
8Mf6*G#Y  
/** @ 4#q  
* @param data 0r*E$|zZ  
* @param l .hzzoLI2  
* @param i zn@<>o8hU  
*/ 04D>h0yFf  
private void insertSort(int[] data, int start, int len) { #.'0DWT \-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !D!~4h)  
} wqkD  
} I} q2)@  
} @@-n/9>vs  
} jAie[5  
 MX2]Q  
堆排序: iVTC"v  
07P/A^Mkx  
package org.rut.util.algorithm.support; Ub2t7MU  
&)zNu  
import org.rut.util.algorithm.SortUtil; 3CL/9C>  
C& BRyo  
/** Ye% e!  
* @author treeroot WYSqnmi  
* @since 2006-2-2 opU=49 b  
* @version 1.0 Ti$G2dBO  
*/ WK)hj{k  
public class HeapSort implements SortUtil.Sort{ PV$)k>H-  
't.I YBHx  
/* (non-Javadoc) n?!XNXb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S81% iz.n  
*/ BZ* ',\o  
public void sort(int[] data) { }Go?j# !  
MaxHeap h=new MaxHeap(); d,8L-pT$FM  
h.init(data); ZP~Mgz{f  
for(int i=0;i h.remove(); b"Hc==`  
System.arraycopy(h.queue,1,data,0,data.length); u1a0w  
} I! eu|_cF  
IO3p&sJ/  
private static class MaxHeap{ U*(/eEtd-  
>HNBTc=~t  
void init(int[] data){ Ne#FBRu5  
this.queue=new int[data.length+1]; kl%%b"h'  
for(int i=0;i queue[++size]=data; M15Ce)oB1(  
fixUp(size); >cU#($X$^  
} nWb*u  
} @6h ,#8#  
@+Y ql  
private int size=0; SQ'\Kd=  
 >M~1{  
private int[] queue; )Q= EmZbJz  
[$M=+YRHMW  
public int get() { K)b@,/5  
return queue[1]; K</EVt,U~  
} #N Qpr  
]8@s+ N  
public void remove() { &n$kVNE  
SortUtil.swap(queue,1,size--); Iue}AGxu:{  
fixDown(1); nilis-Bk_  
} I]Ev6>=;  
file://fixdown ]Q0m]OaT  
private void fixDown(int k) { ~&HP }Q$#f  
int j; ^/]w}C#:d  
while ((j = k << 1) <= size) { M^IEu }  
if (j < size %26amp;%26amp; queue[j] j++; ?#s9@R1  
if (queue[k]>queue[j]) file://不用交换 -&q@|h'  
break; & pHSX  
SortUtil.swap(queue,j,k); qlSI|@CO  
k = j; =jv3O.zq  
} #dA9v7  
} !]f80z  
private void fixUp(int k) { 7[=\bL  
while (k > 1) { BOt1J_;(rO  
int j = k >> 1; `vjn,2S}  
if (queue[j]>queue[k]) )qSjI_qt5  
break; ]31>0yj[Q  
SortUtil.swap(queue,j,k); 4 .Kl/b;  
k = j; 9*~bAgkWI  
} I]GGmN  
} !0-KB#  
E'-lpE  
} Ic2Q<V}oq  
/cHUqn30a  
} \k4tYL5  
JuW"4R  
SortUtil: Gh%R4)}  
u ,R R|/@  
package org.rut.util.algorithm; 5 w-Pq&q  
$8>kk  
import org.rut.util.algorithm.support.BubbleSort; hgg 8r#4q  
import org.rut.util.algorithm.support.HeapSort; OQ(w]G0LP  
import org.rut.util.algorithm.support.ImprovedMergeSort; { 9:vq|  
import org.rut.util.algorithm.support.ImprovedQuickSort; |$|B0mj  
import org.rut.util.algorithm.support.InsertSort; Es<& 6  
import org.rut.util.algorithm.support.MergeSort; ;*%3J$T+  
import org.rut.util.algorithm.support.QuickSort; eI,'7u4q  
import org.rut.util.algorithm.support.SelectionSort; srlxp_^  
import org.rut.util.algorithm.support.ShellSort; >Nam@,hm  
ZLDO&}  
/** "DO|B=EejP  
* @author treeroot |N5r_V  
* @since 2006-2-2 $^:s)Yv  
* @version 1.0 dNu?O>=  
*/ joz0D!-"#  
public class SortUtil { ^F)t>K$0m  
public final static int INSERT = 1; Mz7qC3Z  
public final static int BUBBLE = 2; %$D n);6=  
public final static int SELECTION = 3; VLPPEV-u  
public final static int SHELL = 4; 2Tp @;[!3  
public final static int QUICK = 5; !zVjbYWY  
public final static int IMPROVED_QUICK = 6; o75l&`  
public final static int MERGE = 7; _V`F_C\\#  
public final static int IMPROVED_MERGE = 8; E "%d O  
public final static int HEAP = 9; |LV}kG(2  
*I:a \o~$[  
public static void sort(int[] data) { )\KU:_l  
sort(data, IMPROVED_QUICK); |.*nq  
} GIb,y,PDB  
private static String[] name={ ARUzEo gcf  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" e0<Wed  
}; u>ZH-nw O  
FMX ^k  
private static Sort[] impl=new Sort[]{ ,ZI#p6  
new InsertSort(), A$g'/QM  
new BubbleSort(), j/t)=c  
new SelectionSort(), T mK[^  
new ShellSort(), K 0e*K=UM  
new QuickSort(), 3xk- D &"  
new ImprovedQuickSort(), Spu> ac  
new MergeSort(), s6F0&L;N&  
new ImprovedMergeSort(), M3U?\g  
new HeapSort() 5BJn_<  
}; H Y~[/H+:  
-zg 6^f_pW  
public static String toString(int algorithm){ ."Kp6s`k  
return name[algorithm-1]; gy1R.SN  
} 9Y:Iha`$w  
L\hid /NL  
public static void sort(int[] data, int algorithm) { { SF'YbY  
impl[algorithm-1].sort(data); 0.\}D:x(z  
} x) jc  
?8qN8rk^+  
public static interface Sort { %Rt 5$+dNT  
public void sort(int[] data); Nwj M=GG  
} u4tv= +jh  
EK.n $  
public static void swap(int[] data, int i, int j) { EfB.K}b^  
int temp = data; !hFzIp  
data = data[j]; uZTbJ3$$  
data[j] = temp; 2KlVj]!7  
} &^`[$LtYd  
} shD4";8*@  
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