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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。 um ,/^2A  
插入排序: /2'\ya4B  
nr&G4t+%Hv  
package org.rut.util.algorithm.support; z*yN*M6t  
u"T5m  
import org.rut.util.algorithm.SortUtil; 9k7|B>LT  
/** "6Dz~5  
* @author treeroot nt;A7pI`  
* @since 2006-2-2 yE"hgdL  
* @version 1.0 )W57n)]  
*/ d1y(Jt  
public class InsertSort implements SortUtil.Sort{ -HoPECe  
J=zZGd%  
/* (non-Javadoc) GQF7]j/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (59<Zo  
*/ yv3my aS  
public void sort(int[] data) { |lJXI:G G  
int temp; /2l4'Q=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r}hj,Sq'  
} -8 &f=J)  
} $6y1';A  
} ^[zF_df  
<R3S{ ty  
} )%^oR5W  
Mqc[IAcd]  
冒泡排序: 9!9 Gpi  
f7s]:n*Ih  
package org.rut.util.algorithm.support; P\2QH@p@t  
q,:\i+>K*  
import org.rut.util.algorithm.SortUtil; 9,y&?GLP  
?R,^prW{  
/** fd+kr#  
* @author treeroot h)y"?Jj  
* @since 2006-2-2 :hMuxHr  
* @version 1.0 /_}v|E0  
*/ H>M%5bj  
public class BubbleSort implements SortUtil.Sort{ (^Nf;E  
kJDMIh|g  
/* (non-Javadoc) tAc;O[L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (5yg\3Jvp  
*/ "sg$[)I3n  
public void sort(int[] data) { 3tr?-l[N\  
int temp; 0.@/I}R[  
for(int i=0;i for(int j=data.length-1;j>i;j--){ #h r!7Kc;N  
if(data[j] SortUtil.swap(data,j,j-1); }Bc6:a  
} -CL7^  
} i6X/`XW'  
} MH !CzV&  
} Pi8U}lG;  
gpw(j0/Fs  
} x(S 064  
/@wm?ft6Gk  
选择排序: wh*OD  
cOUO_xp(  
package org.rut.util.algorithm.support; ~(%G; fZ?x  
pM#:OlqC  
import org.rut.util.algorithm.SortUtil; W1: o2 C7  
,Y`C7Px  
/** &UzZE17R  
* @author treeroot {g @ *jo&  
* @since 2006-2-2 C62<pLJf  
* @version 1.0 BV!Kiw  
*/ `E|IMUB~  
public class SelectionSort implements SortUtil.Sort { w e} sC,  
dUe"qH29s  
/* {Ua5bSbh  
* (non-Javadoc) gsU&}R1*h  
* *g=*}2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =r_ S MTu  
*/ Xp{gh@#dr  
public void sort(int[] data) { JGO>X|T  
int temp; @{ nT4{  
for (int i = 0; i < data.length; i++) { Vm6^'1CY  
int lowIndex = i; 1%-?e``.  
for (int j = data.length - 1; j > i; j--) { MiSFT5$v6  
if (data[j] < data[lowIndex]) { <4O=[Q5S  
lowIndex = j; mR0@R;,p  
} . }=;]=  
} 3)3'-wu  
SortUtil.swap(data,i,lowIndex); % tJ?dlD'  
} X`aED\#\h  
} +pF z&)?  
N7;E 2 X  
} i5AhF\7F9  
[ 0~qs|27  
Shell排序: SU#|&_wtr!  
{ j/w3  
package org.rut.util.algorithm.support; KK] >0QAY  
d9^=#ot  
import org.rut.util.algorithm.SortUtil; V!Joh5=a  
+'KM~c?]  
/** P{qn@:  
* @author treeroot 7P\sn<  
* @since 2006-2-2 k,@1rOf  
* @version 1.0 Cu?$!|V  
*/ tP:xx2N_  
public class ShellSort implements SortUtil.Sort{ DX!$k[  
k[zf`x^  
/* (non-Javadoc) ?.Kl/8ml  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'PO1{&M  
*/ ~z'0~3  
public void sort(int[] data) { t6"4+:c!>  
for(int i=data.length/2;i>2;i/=2){ 8WyG49eic  
for(int j=0;j insertSort(data,j,i); S`l CynGH  
} P,%|(qB  
} .9ROa#7U;n  
insertSort(data,0,1); @e Myq1ZU  
} *Zc-&Dk:Ir  
8ziYav  
/** a%]p*X!  
* @param data 2xnOWW   
* @param j V2y[IeSQ  
* @param i ]':C~-RV{  
*/ ' 5Ieqpm9  
private void insertSort(int[] data, int start, int inc) { au7BqV!uL  
int temp; qMUqd}=P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); g_x<+3a  
} '+eP%Y[W%  
} h]=chz  
} <B fwR$  
rcbixOT  
} C4G)anT  
2`},;i~[  
快速排序: [Dt\E4  
 z7K?rgH  
package org.rut.util.algorithm.support; O@$hG8:  
3gM{lS}h#  
import org.rut.util.algorithm.SortUtil; O7K))w  
h!Q >h7  
/** _AO0:&  
* @author treeroot 'v,W gPe  
* @since 2006-2-2 =DCQ!02  
* @version 1.0 ydFY<Mb(o  
*/ >:xnjEsi$/  
public class QuickSort implements SortUtil.Sort{ >2|#b  
K l4",  
/* (non-Javadoc) "s*{0'jo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kQb0pfYs  
*/ QxkfP%_g  
public void sort(int[] data) { jsG9{/Ov3  
quickSort(data,0,data.length-1);  [:k'VXL  
} hh?'tb{  
private void quickSort(int[] data,int i,int j){ ,S8Vfb &  
int pivotIndex=(i+j)/2; 1dq.UW\  
file://swap Rsulp#['  
SortUtil.swap(data,pivotIndex,j); p<+]+,|\~:  
f*I5 m=  
int k=partition(data,i-1,j,data[j]); tyDtwV|  
SortUtil.swap(data,k,j); )CmuC@ Q"  
if((k-i)>1) quickSort(data,i,k-1); K1hw' AaQ  
if((j-k)>1) quickSort(data,k+1,j); OYzJE@r^  
_+. t7q^  
} u,pm\  
/** mA."*)8VNg  
* @param data f^]AyU;F:  
* @param i kj8zWG4KH  
* @param j `SG70/  
* @return 5FzRusNiA  
*/ I)x:NF6JO  
private int partition(int[] data, int l, int r,int pivot) { :.~a[\C@V<  
do{ jTqba:q@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); V.F 's(o  
SortUtil.swap(data,l,r); nFP2wvFM  
} P]TT  
while(l SortUtil.swap(data,l,r); Brl6r8LGi  
return l; EvYw$ j  
} <Kh\i'8  
ZJ 4"QsF  
} A/QVotcU  
YO Y+z\Q  
改进后的快速排序: Cam}:'a/`  
ke%zp-2c  
package org.rut.util.algorithm.support; }}2 kA  
pFK |4u  
import org.rut.util.algorithm.SortUtil; (kHR$8GFM  
`%=Jsi0.Nq  
/** bXW)n<y  
* @author treeroot 8iCI s=06  
* @since 2006-2-2 sH]AB =_  
* @version 1.0 ELPJ}moWZ  
*/ e%P;Jj476  
public class ImprovedQuickSort implements SortUtil.Sort { 2 9]8[Z,4  
H )}WWXK  
private static int MAX_STACK_SIZE=4096; K c<z;  
private static int THRESHOLD=10; zm:=d>D..  
/* (non-Javadoc) }.'%gJrS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !vB%Q$!x  
*/ AWi87q  
public void sort(int[] data) { R',w~1RV'  
int[] stack=new int[MAX_STACK_SIZE]; rEf\|x=st:  
"tark'  
int top=-1; =6dKC_Q  
int pivot; xsvs3y|  
int pivotIndex,l,r; HB}gn2 .1&  
KH7]`CU  
stack[++top]=0; KCFwO'  
stack[++top]=data.length-1; V588Leb?  
qh'BrYu*  
while(top>0){ JA}'d7yEa  
int j=stack[top--]; ? 1{S_  
int i=stack[top--]; @Otc$hj  
I Q L~I13  
pivotIndex=(i+j)/2; ;Y '\:  
pivot=data[pivotIndex]; </Id';|v  
s`J=:>9*  
SortUtil.swap(data,pivotIndex,j); e^GW[lT  
\,EPsQV0?  
file://partition VqrMi *W6  
l=i-1; P~<93  
r=j; iK]g3ew|  
do{ ^zJ. W  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); OW}A48X[+  
SortUtil.swap(data,l,r); ##@#:B  
} 5%`Ul  
while(l SortUtil.swap(data,l,r); 8_m9CQ6 i  
SortUtil.swap(data,l,j); tb{{oxa,k  
]mj+*l5  
if((l-i)>THRESHOLD){ 55DzBV  
stack[++top]=i; wUeOD.;#F  
stack[++top]=l-1; |BkY"F7m9  
} Qzhnob#C9  
if((j-l)>THRESHOLD){ -X[[ OR9+  
stack[++top]=l+1; DRoxw24  
stack[++top]=j; iq:[+  
} \i+h P1 mz  
,m?D\Pru  
} [J`G`s!  
file://new InsertSort().sort(data); F"H!CJJu&  
insertSort(data); cQ41NX@I  
} Uq.~3V+u  
/** 5r<(Z0  
* @param data j*u9+.   
*/ ewG21 q$  
private void insertSort(int[] data) { \Ji2u GT  
int temp; UK>=y_FYO  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SU'9+=_$  
} Nj_sU0Dt  
} C<t>m_t9  
} @>IjfrjV  
,rI |+  
} A4FDR#  
} XU:DE  
归并排序: kV3j}C"  
E@6r{uZ#  
package org.rut.util.algorithm.support; $tHwJ!<$&  
Iq]6]  
import org.rut.util.algorithm.SortUtil; Pu*HZW3l  
8VmN? "5v  
/** $-?5Q~  
* @author treeroot }.cmiC  
* @since 2006-2-2 bMZn7c  
* @version 1.0 g <4M!gi  
*/ u^$Md WP  
public class MergeSort implements SortUtil.Sort{ i{ @'\}{L  
nE0~Y2  
/* (non-Javadoc) /7@2Qc2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0r ; nz]'  
*/ Ww&- `.  
public void sort(int[] data) { 1GE%5  
int[] temp=new int[data.length]; nj0AO0  
mergeSort(data,temp,0,data.length-1);  Gy6 qLM  
} }!<cph  
Qz(T[H5%W  
private void mergeSort(int[] data,int[] temp,int l,int r){ qetP93N_*  
int mid=(l+r)/2; yO;C3q  
if(l==r) return ; ENWB|@B  
mergeSort(data,temp,l,mid); xO-U]%oq  
mergeSort(data,temp,mid+1,r); +7< >x-+  
for(int i=l;i<=r;i++){ ]MLLr'6?  
temp=data; NND=Z xl  
} !K3cf]2UD  
int i1=l; -,A5^>}%,Y  
int i2=mid+1; m'(;uR`  
for(int cur=l;cur<=r;cur++){ j~S!!Z ]  
if(i1==mid+1) KBRg95E~]l  
data[cur]=temp[i2++]; #K1BJ#KUt  
else if(i2>r) *\:_o5o%[T  
data[cur]=temp[i1++]; (g/X(3  
else if(temp[i1] data[cur]=temp[i1++]; 5[2.5/  
else AV 5\W}  
data[cur]=temp[i2++]; O;e8ft '|  
} AOx3QgC^NO  
} FT/5 _1i  
JX/4=..  
} _#D\*0J  
LL[#b2CKa  
改进后的归并排序: EY&C [=  
tP Efz+1N  
package org.rut.util.algorithm.support; 7;}3{z  
Y-3[KHD  
import org.rut.util.algorithm.SortUtil; -Bo~"q  
hRa(<ZK  
/** W+f&%En  
* @author treeroot -V u/TT0  
* @since 2006-2-2 )=E~CpKV  
* @version 1.0 ,J (5@8(>a  
*/ T$^>Fiz{Se  
public class ImprovedMergeSort implements SortUtil.Sort { $#7J\=GZ+  
4%fN\f  
private static final int THRESHOLD = 10; y{`(|,[  
Ls>u` hG  
/* 8yWu{'G  
* (non-Javadoc) TjUZv1(L  
* fAM D2C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,B~lwF9  
*/ ;*-@OLT_K  
public void sort(int[] data) { 45)ogg2  
int[] temp=new int[data.length]; Ku/H=  
mergeSort(data,temp,0,data.length-1); qbU1qF/  
} j[/SXF\=  
Oh/b?|imG  
private void mergeSort(int[] data, int[] temp, int l, int r) { CaYos;Pl  
int i, j, k; MLt'YW^  
int mid = (l + r) / 2; U+*oI*  
if (l == r) Z6R: rq  
return; xQ#Akd=  
if ((mid - l) >= THRESHOLD) (9KDtr*(2i  
mergeSort(data, temp, l, mid); =(.mf  
else Rnj Jg?I=  
insertSort(data, l, mid - l + 1); 5]H))}9>d  
if ((r - mid) > THRESHOLD) -4vHK!l  
mergeSort(data, temp, mid + 1, r); YBtq0c  
else "y~muE:.  
insertSort(data, mid + 1, r - mid); "$W|/vD+  
q: TT4MUj<  
for (i = l; i <= mid; i++) { b =K6IX;  
temp = data; 9iGE`1N%E  
} Ld\LKwo  
for (j = 1; j <= r - mid; j++) { 5 dfe@$  
temp[r - j + 1] = data[j + mid]; N[,VSO&  
} :kb1}Wu  
int a = temp[l]; 8<yV  
int b = temp[r]; ']IT uP8  
for (i = l, j = r, k = l; k <= r; k++) { KUp   
if (a < b) { T/GgF&i3  
data[k] = temp[i++]; \)^,PA3  
a = temp; 0q[p{_t`  
} else { 8tLT'2+H#  
data[k] = temp[j--]; {=bg5I0|a  
b = temp[j]; ]&C:>  
} <78$]Z2we  
} Ha)3i{OM  
} 3?.1~"-J  
I&pr_~.  
/** R=vbUA  
* @param data .DDg%z  
* @param l lL(p]!K'  
* @param i 3$?9uMl#  
*/ ;|>q zx  
private void insertSort(int[] data, int start, int len) { 0i8[=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !,Xyl} #  
} 5)d,G9  
} sf |oNOz  
} 4_Qa=T8  
} y+4?U  
}BI~am_  
堆排序: Wl& >6./{  
t7um [  
package org.rut.util.algorithm.support; <XQN;{xSa  
AI1@-  
import org.rut.util.algorithm.SortUtil; :DtZ8$I`]C  
cBz!U 8(  
/** ZnvEv;P  
* @author treeroot V!T^wh;  
* @since 2006-2-2 wr$cK'5ZL  
* @version 1.0 BIxV|\k  
*/ h8f!<:rTS  
public class HeapSort implements SortUtil.Sort{ '1W!xQ}E  
IajD;V  
/* (non-Javadoc) MV"E?}0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @sc8}"J]#  
*/ n-b>m7O(  
public void sort(int[] data) { k{gl^  
MaxHeap h=new MaxHeap(); 42rj6m\  
h.init(data); fL ~1  
for(int i=0;i h.remove(); A Gv!c($  
System.arraycopy(h.queue,1,data,0,data.length); 0+T*$=?  
} ZYE' C  
\%sPNw=e  
private static class MaxHeap{ AMbKN2h1f  
DMF?5GX  
void init(int[] data){ J[ e}  
this.queue=new int[data.length+1]; Ik`O.Q.}  
for(int i=0;i queue[++size]=data; F(Lb8\to\M  
fixUp(size); o3Mf:;2cC  
} BZovtm3 E  
} k$ZRZ{ E+  
)Rjb/3*!  
private int size=0; 99<4t$KH  
E% <w5d.lq  
private int[] queue; v<L=!-b^  
nd.57@*M  
public int get() { ^I]LoG:  
return queue[1]; P@qMJ}<j  
} 7~_{.f  
Yo>`h2C4  
public void remove() { `wNm%*g  
SortUtil.swap(queue,1,size--); ).pO2lLF4  
fixDown(1); /8f>':zUb  
} r?fH &u  
file://fixdown h/,R{A2mO  
private void fixDown(int k) { u@<Pu@?xm  
int j; :lUX5j3  
while ((j = k << 1) <= size) { K@B" ]6  
if (j < size %26amp;%26amp; queue[j] j++; <^d!Vzr]  
if (queue[k]>queue[j]) file://不用交换 cNe0x2Z$?  
break; 6ayy[5tW  
SortUtil.swap(queue,j,k); U z"sdi  
k = j; ?n)Xw)]  
} Z:K+I+:t  
} }1 $hxfb  
private void fixUp(int k) { + c`AE  
while (k > 1) { M2}np  
int j = k >> 1; Vwjk[ DOL  
if (queue[j]>queue[k]) ov8 ByJc  
break; ? Phk~ jE  
SortUtil.swap(queue,j,k); 4w 'lu"U  
k = j; `,+#!)  
} Z;#%t.  
} "[k1D_PZ  
ful#Px6m  
} FC6xFg^  
x Sv-;!y  
} WrNLGkt  
Nwgu P  
SortUtil: KacR?Al  
rVY?6OMkd  
package org.rut.util.algorithm; t{!/#eQC  
)IQ*  
import org.rut.util.algorithm.support.BubbleSort; VM7 !0  
import org.rut.util.algorithm.support.HeapSort; $H'8 #:[d_  
import org.rut.util.algorithm.support.ImprovedMergeSort; ^7.XGWQ)-  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1n_;kaY  
import org.rut.util.algorithm.support.InsertSort; Bp :~bHf  
import org.rut.util.algorithm.support.MergeSort; =-_)$GOI'  
import org.rut.util.algorithm.support.QuickSort; <0#^7Z  
import org.rut.util.algorithm.support.SelectionSort; ;(7-WnU8N  
import org.rut.util.algorithm.support.ShellSort; HN{zT&  
QIQfI05  
/** 2Zy_5>~  
* @author treeroot R~)ybf{  
* @since 2006-2-2 nP<S6:s:  
* @version 1.0 S.{fDcM  
*/ K}x_nW  
public class SortUtil { 1pK6=-3w3  
public final static int INSERT = 1; ^K+:C;Q|  
public final static int BUBBLE = 2; Jm4#V~w  
public final static int SELECTION = 3; 5k]XQxc6_  
public final static int SHELL = 4; [u`6^TycP  
public final static int QUICK = 5; TXjloGv^  
public final static int IMPROVED_QUICK = 6; 'TL2%T/)t  
public final static int MERGE = 7; 9e!vA6Fx  
public final static int IMPROVED_MERGE = 8; 9RH"d[%yc}  
public final static int HEAP = 9; BWh }^3?l  
:}Ok$^5s  
public static void sort(int[] data) { OOokhZd`  
sort(data, IMPROVED_QUICK); K1OkZ6kl  
} r$ =qQ7^#  
private static String[] name={ zN%97q_  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @D~B{Hg  
}; ,9d9_c.T  
/%!~x[BeJ>  
private static Sort[] impl=new Sort[]{ e'34Pw!m  
new InsertSort(), Pe}PH I  
new BubbleSort(), Di>rO038  
new SelectionSort(), 2:Q(Gl`<l  
new ShellSort(),  ;\qXbL7  
new QuickSort(), ?R|th Z  
new ImprovedQuickSort(), W m . }Zh  
new MergeSort(), }x:0os  
new ImprovedMergeSort(), -p`L% xj\  
new HeapSort() A?8\Y{FQ  
}; *t(4 $  
Zsj`F9*e  
public static String toString(int algorithm){ e`iEy=W  
return name[algorithm-1]; :lgi>^  
} Ow@v"L;jF!  
EiWd+v,QJQ  
public static void sort(int[] data, int algorithm) { $ KB  
impl[algorithm-1].sort(data); )T1iN(Z  
} }^Gd4[(,g  
:_xh(W+2<  
public static interface Sort { &$=!dA  
public void sort(int[] data); */(I[p  
} K*Ks"Vx  
'H|~u&?  
public static void swap(int[] data, int i, int j) { qM",( Bh  
int temp = data; ]]2k}A[-I  
data = data[j]; 5dl,co{q  
data[j] = temp; QB&BTT=!  
} l+zb~  
} vN65T$g7  
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