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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。 * [*#cMZ   
插入排序: ogv86d  
iV#JJ-OBq  
package org.rut.util.algorithm.support; ]s jFj  
/U<-N'|  
import org.rut.util.algorithm.SortUtil; uF>I0J#z?  
/** =SLP}bP{:  
* @author treeroot p#.B Fy  
* @since 2006-2-2 XgKtg-,  
* @version 1.0 9bjjo;A  
*/ i;^ e6A>  
public class InsertSort implements SortUtil.Sort{ LBtVK, ?  
daBu<0\  
/* (non-Javadoc) 9\*xK%T+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cog Lo&.  
*/ !TY4C`/  
public void sort(int[] data) { \s;]Tg  
int temp; y]=v+Q*+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P0$q{ j  
} u;DF$   
} aPB %6c=  
} o_U=]mEDY  
~fsAPIQ  
} MxxYMR  
r&"}zyL  
冒泡排序: </<_e0  
wd*i~A3+?  
package org.rut.util.algorithm.support; ZeK*MPxQ  
oUZwZ_yKW  
import org.rut.util.algorithm.SortUtil; ) 0$7{3  
,oDZ:";  
/** ]M{SM`Ya  
* @author treeroot }Evyfc#D  
* @since 2006-2-2 2uw%0r3Vi6  
* @version 1.0 n4)G g~PE  
*/ ;^:~xJFx|  
public class BubbleSort implements SortUtil.Sort{ N`y!Km  
,KkENp_  
/* (non-Javadoc) wpY%"x#-+=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H's67E/>*  
*/ ~=%eOoZP;c  
public void sort(int[] data) { uW4G!Kw28  
int temp; z>k6T4(  
for(int i=0;i for(int j=data.length-1;j>i;j--){ H7"I+qE-G  
if(data[j] SortUtil.swap(data,j,j-1); _h_;nS.Y  
} {i^ ?XdM  
} {#q<0l  
} .D^k0V  
} HeGGAjc  
xN2M| E]  
} M#})  
/'E+(Y&:J  
选择排序: !`,6E`Y#  
c@ En4[a'  
package org.rut.util.algorithm.support; \WouTn  
O<f_-n@G|  
import org.rut.util.algorithm.SortUtil; 7* ^\mycv  
sx8mba(  
/** n_v c}ame  
* @author treeroot '. atbl  
* @since 2006-2-2 m*P~X*St  
* @version 1.0 9R>A,x(  
*/ :<ujk  
public class SelectionSort implements SortUtil.Sort { \UJ:PW$7  
$a\q<fN}  
/* wx(| $2{h  
* (non-Javadoc) F.?:Gd1  
* x:;8U i"&B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wias ]u|  
*/ Pc? d@tm  
public void sort(int[] data) { |kV,B_qz  
int temp; t K{`?NS  
for (int i = 0; i < data.length; i++) { ,k{{ZP P  
int lowIndex = i; \I#lLP  
for (int j = data.length - 1; j > i; j--) { [ $.oyjd  
if (data[j] < data[lowIndex]) { H|F>BjXn5  
lowIndex = j; jY>KF'y  
} 8<)[+ @$0  
} k4pvp5}%  
SortUtil.swap(data,i,lowIndex); +ls *04  
} HJBUN1n  
} }K"=sE  
zfi{SO l  
} M0c"wi@S_  
}'kk}2ej`  
Shell排序: ]|Vm!Q  
L4.yrA-]C%  
package org.rut.util.algorithm.support; XFYCPET  
:BMUc-[  
import org.rut.util.algorithm.SortUtil; wi*Ke2YKP  
t]eB3)FX  
/** 1ErH \!  
* @author treeroot bL *;N3#E  
* @since 2006-2-2 s26s:A3rh  
* @version 1.0 iv#9{T  
*/ 28X)s!W'  
public class ShellSort implements SortUtil.Sort{ }}grJh>tGg  
f(D?g  
/* (non-Javadoc) "793R^Tz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9A B~*;U  
*/ SL%4w<  
public void sort(int[] data) { i-sE\m  
for(int i=data.length/2;i>2;i/=2){ xZ`t~4qR  
for(int j=0;j insertSort(data,j,i); ]}>GUXe)^  
} <%pi*:E|  
} jE2ziK  
insertSort(data,0,1); 8Mws?]\/q  
} _z,/!>J  
Y0|~]J(B  
/** .vQ2w  
* @param data Yz-b~D/=}  
* @param j e"^1- U\  
* @param i MB^ b)\X  
*/ e yTYg  
private void insertSort(int[] data, int start, int inc) { Gjy'30IF  
int temp; pPQ]#v  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 'O\K Wj{  
} 9Od Kh\F (  
} f=/S]o4/3  
} 8qS)j1.!  
1%EY!14G+  
} !3yR?Xem}  
&e,xN;  
快速排序: v%zI~g.L  
_?q\tyf3  
package org.rut.util.algorithm.support; ?A62VV51CN  
Htsa<t F  
import org.rut.util.algorithm.SortUtil; (CZRX9TT1  
Fdc bmQ  
/** 1`aFL5[0$  
* @author treeroot 6_zL#7E'  
* @since 2006-2-2 `;cKN)Xk  
* @version 1.0 Qt>yRt  
*/ 8VMq>-  
public class QuickSort implements SortUtil.Sort{ dqF--)Nb  
1f[!=p  
/* (non-Javadoc) ;=h^"et  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HLk}E*.mC  
*/ NTAPx=!1*  
public void sort(int[] data) { _Seiwk &  
quickSort(data,0,data.length-1); ) 3Y E$,  
} P.;B V",  
private void quickSort(int[] data,int i,int j){ q%>L/KJ#  
int pivotIndex=(i+j)/2; !7%L%~z^  
file://swap 4,$x~m`N  
SortUtil.swap(data,pivotIndex,j); C?hw$^w7T  
b.Y[:R_9&  
int k=partition(data,i-1,j,data[j]); =9pFb!KX  
SortUtil.swap(data,k,j); n4Q!lJ  
if((k-i)>1) quickSort(data,i,k-1); uY "88|  
if((j-k)>1) quickSort(data,k+1,j); ;Kkn7&'F  
:4Q_\'P  
} ,3fw"P$  
/** mGL%<4R,  
* @param data |dX#4Mq^,  
* @param i FpW{=4yk  
* @param j >xP $A{  
* @return Y;#P"-yH  
*/ xZ,g6s2o  
private int partition(int[] data, int l, int r,int pivot) { A|y&\~<A  
do{ TC R(  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :kFWUs=  
SortUtil.swap(data,l,r); ?FMHK\  
} KY|Q#i|pM  
while(l SortUtil.swap(data,l,r); [eWB vAiW  
return l; H,H'bd/  
} 4|++0=#D$  
[%QJ6  
} ;! CQFJ=  
zyCl`r[}  
改进后的快速排序: 2^qY, dL  
u :m]-'  
package org.rut.util.algorithm.support; Q3oVl^q  
G e~&Ble  
import org.rut.util.algorithm.SortUtil; 1L &_3}  
:1.$7W t  
/** )*s.AFu]7x  
* @author treeroot b,318R8+G  
* @since 2006-2-2 n$b/@hp$z  
* @version 1.0 6"A|)fz  
*/ 1YM04*H  
public class ImprovedQuickSort implements SortUtil.Sort { GhpH7% s  
X.T.^}=  
private static int MAX_STACK_SIZE=4096; YToRG7X#  
private static int THRESHOLD=10; $,h*xb.  
/* (non-Javadoc) VnIJ$5Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q~l&EH0  
*/ "2=v?,'t  
public void sort(int[] data) { i 3?zYaT  
int[] stack=new int[MAX_STACK_SIZE]; `7N[rs9|S  
C@Wm+E~;8  
int top=-1; B~~rLo:a  
int pivot; oPWvZI(\&  
int pivotIndex,l,r; .[O*bk  
}B0V$  
stack[++top]=0; vQIoj31  
stack[++top]=data.length-1; Wb*d`hzQ}  
pQEHWq"Q  
while(top>0){ Yq;S%.  
int j=stack[top--]; {kZhje^$vi  
int i=stack[top--]; =VY[m-q5  
@~a52'\  
pivotIndex=(i+j)/2; OkFq>;{a  
pivot=data[pivotIndex]; pV>/ "K  
bLNQ%=FjO  
SortUtil.swap(data,pivotIndex,j); < ^J!*>  
q)!{oi{x(  
file://partition TH6g:YP`7  
l=i-1; KUuwScb\  
r=j; NrL%]dl3/  
do{ <'B`b  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); U'lrdc"Q  
SortUtil.swap(data,l,r); wetkmd  
} 0Y"==g+ >f  
while(l SortUtil.swap(data,l,r); pK$^@~DE  
SortUtil.swap(data,l,j); RHB>svT^K>  
cQ+V 4cW Z  
if((l-i)>THRESHOLD){ WJJ!No P  
stack[++top]=i; b5H[~8mf  
stack[++top]=l-1; ICV67(Ui  
} |dXS+R1  
if((j-l)>THRESHOLD){ .GS|H d  
stack[++top]=l+1; Vw)\#6FL  
stack[++top]=j; nGyY`wt&Rg  
} O'5(L9,  
E[_Z%zd^  
} <pPI:D@G  
file://new InsertSort().sort(data); v3aiX  
insertSort(data); Vwv O@G7A  
} VMtR4!:q  
/** t/q\Ne\\,  
* @param data ]A'e+RD4k  
*/ nre8 F  
private void insertSort(int[] data) { ~8|$KD4I  
int temp; ][qZOIk@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q$RP2&  
} h!)(R<  
} Hj2P|;2S  
} y0=BL  
_;0:wXib =  
} AY *  
G-} zkax  
归并排序: !)&-\!M>  
y8,es$  
package org.rut.util.algorithm.support; kuUH 2:L  
][0HJG{{g  
import org.rut.util.algorithm.SortUtil; [!aHP ?-  
)ns;S  
/** o.j;dsZ  
* @author treeroot ZY][LU~l8  
* @since 2006-2-2 Vxk0oI k`  
* @version 1.0 1hRC Bwx  
*/ \3Xt\1qN4  
public class MergeSort implements SortUtil.Sort{ b!UT<:o  
{`1zVTp[<  
/* (non-Javadoc) [i&tE.7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dn`#N^Od  
*/ (T`x-wTl  
public void sort(int[] data) { r9u*c  
int[] temp=new int[data.length]; Zl* HT%-5  
mergeSort(data,temp,0,data.length-1); /+66y=`UJ  
} /=-E`%R}!  
2U#OBvNU  
private void mergeSort(int[] data,int[] temp,int l,int r){ @c.QrKSaD  
int mid=(l+r)/2; Xv'64Nc!;  
if(l==r) return ; tc# rL   
mergeSort(data,temp,l,mid); guf+AVPno  
mergeSort(data,temp,mid+1,r); 57r\s 8  
for(int i=l;i<=r;i++){ ?DpMR/  
temp=data; OO\UF6MCU  
} 6%fU}si,  
int i1=l; 4#=^YuKaF1  
int i2=mid+1; c{&sf y  
for(int cur=l;cur<=r;cur++){ [c3hwogf:  
if(i1==mid+1) SUvHLOA  
data[cur]=temp[i2++]; `Y+p7*Qr2  
else if(i2>r) eJ?SLMLY  
data[cur]=temp[i1++]; 9]kWM]B)o  
else if(temp[i1] data[cur]=temp[i1++]; XFM6.ye  
else /j.V0%  
data[cur]=temp[i2++]; C0kwI*)  
} cIq3En  
} =P2T&Gb  
x#pT B.  
} m4kmJaM  
1_<'S34  
改进后的归并排序: zzPgLE55  
hS<x+|'l  
package org.rut.util.algorithm.support; 9-L.?LG  
h{>8W0W*  
import org.rut.util.algorithm.SortUtil; `cVG_= 2  
|@Z QoH  
/** B\N,%vsx#U  
* @author treeroot \7Zk[)!FL  
* @since 2006-2-2 i;Gl-b\_h  
* @version 1.0 ;1F3.ibE  
*/ Ba@UX(t  
public class ImprovedMergeSort implements SortUtil.Sort { m2\ZnC  
(+T|B E3*#  
private static final int THRESHOLD = 10; b%pLjvU  
G =lC[i  
/* -<CBxyZa&  
* (non-Javadoc) b/<n:*$   
* #mtlgK'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -+c_TJ.dC  
*/ -vhgBru  
public void sort(int[] data) { >5XE*9  
int[] temp=new int[data.length]; Xf$,ra"  
mergeSort(data,temp,0,data.length-1); 9/Q5(P  
} `bivAL  
[j:%O|h  
private void mergeSort(int[] data, int[] temp, int l, int r) { c)lMi}/  
int i, j, k; CJ%7M`zy  
int mid = (l + r) / 2; qzV:N8+,`  
if (l == r) r)h+pga5^E  
return; -KO E2f  
if ((mid - l) >= THRESHOLD) VIynlvy  
mergeSort(data, temp, l, mid); !_zmm$bR  
else g3"`b)M  
insertSort(data, l, mid - l + 1); |-Y,:sY:  
if ((r - mid) > THRESHOLD) h!MZ 6}zb)  
mergeSort(data, temp, mid + 1, r); a}%>i~v<  
else P^.L0T5g  
insertSort(data, mid + 1, r - mid); G?YKm1:w   
h5B'w  
for (i = l; i <= mid; i++) { ~0ZP%1.B3  
temp = data; 6i>xCb  
} wYS4#7  
for (j = 1; j <= r - mid; j++) { n?:s/6tP  
temp[r - j + 1] = data[j + mid]; e'g-mRh  
} z`{Ld9W  
int a = temp[l]; =y ^N '1q  
int b = temp[r]; cojuU=i  
for (i = l, j = r, k = l; k <= r; k++) { ]LNP"vi;  
if (a < b) { Tpkm\_  
data[k] = temp[i++]; =[vT=sHz7  
a = temp; Q- j+#NGc  
} else { -,}f6*  
data[k] = temp[j--]; +ZXk0sP_<  
b = temp[j]; +FyG{1?<  
} .pG_j]  
} 2sWM(SN  
} u9}=g%TV  
e|xRK?aVBu  
/** r@k&1*&  
* @param data 5f}wQ  
* @param l !=eui$]  
* @param i s_p?3bKu  
*/ NcFHvK  
private void insertSort(int[] data, int start, int len) { bIwt#:v  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P(qUx9  
} 7e>n{rl  
} :C>slxY  
} D0tI  
} 1 ^Ci$ra  
E3sl"d;~  
堆排序: X_O(j!h  
1j3mTP  
package org.rut.util.algorithm.support; A"i40 @+  
XeJx/'9o{  
import org.rut.util.algorithm.SortUtil; "J7=3$CA  
ZShRE"`  
/** YzsHec  
* @author treeroot So,EPB+  
* @since 2006-2-2 OG/R6k.  
* @version 1.0 `3\5&Bf  
*/ K^?/  
public class HeapSort implements SortUtil.Sort{ W 4~a`D7  
U")bvUIL  
/* (non-Javadoc) MhWmY[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E*j)gj9  
*/ n1!0KOu/N  
public void sort(int[] data) { pz#oRuujY  
MaxHeap h=new MaxHeap(); CGny#Vh  
h.init(data); ;NB J@E,  
for(int i=0;i h.remove(); jQ(qaX&  
System.arraycopy(h.queue,1,data,0,data.length); jt=mK ,%  
} r1JKTuuo  
1i^!A&  
private static class MaxHeap{ !fZ{ =  
~ex1,J*}t  
void init(int[] data){ E0Ig/ j  
this.queue=new int[data.length+1]; UC\CCDV#^  
for(int i=0;i queue[++size]=data; ?0Z?Z3)%w4  
fixUp(size); ST] h NM  
} Q4}2-}|  
} D$!(Iae  
\:%e 6M  
private int size=0; 34&n { xv  
@=isN'>]O  
private int[] queue; $5s?m\!jZz  
0,E*9y}  
public int get() { LoqS45-)  
return queue[1]; ?tV$o,11  
} UuzT*Y>  
+*mi%)I  
public void remove() { N>xs@_"o  
SortUtil.swap(queue,1,size--); |ILj}4ZA7  
fixDown(1); $wub)^  
} yiWBIJ2Wu9  
file://fixdown r` HtN{6r  
private void fixDown(int k) { $0+AR)  
int j; {D 9m// x  
while ((j = k << 1) <= size) { e4j:IK>  
if (j < size %26amp;%26amp; queue[j] j++; 7GB>m}7  
if (queue[k]>queue[j]) file://不用交换 &r;-=ASYzV  
break; ^fQ ]>/u  
SortUtil.swap(queue,j,k); q`{crY30  
k = j; oGu-:X=`9  
} 2dFC{US'  
} f{t5r  
private void fixUp(int k) { z~# .Ey  
while (k > 1) { 9l+'V0?`  
int j = k >> 1; 4'RyD<K\  
if (queue[j]>queue[k]) PB(mUD2"r  
break; &k+ jVymH  
SortUtil.swap(queue,j,k); 4w<U%57  
k = j; f]jAa?d T&  
} ,Hlbl}.ls  
} iqRk\yq<  
1}%vZE2  
} [z5pqd-  
>\+c@o[  
} j(AN] g:  
" ;8H;U`  
SortUtil: iOYC1QFi?  
mG*[5?=r  
package org.rut.util.algorithm; o $7:*jU  
ifHQ2Ug 9  
import org.rut.util.algorithm.support.BubbleSort; 2/<VoK0b  
import org.rut.util.algorithm.support.HeapSort; V\5ZRLawP  
import org.rut.util.algorithm.support.ImprovedMergeSort; ( d#E16y  
import org.rut.util.algorithm.support.ImprovedQuickSort; >TK:&V  
import org.rut.util.algorithm.support.InsertSort; vR[XbsNM  
import org.rut.util.algorithm.support.MergeSort; U(4>e!  
import org.rut.util.algorithm.support.QuickSort; S%uwQ!=O8  
import org.rut.util.algorithm.support.SelectionSort; *9Ej fs7L  
import org.rut.util.algorithm.support.ShellSort; :70[zo7n'  
Bvk 8b  
/** W|XW2`3p  
* @author treeroot 7O',X Y  
* @since 2006-2-2 8E`A`z  
* @version 1.0 UFr ]$m&  
*/ e* {'A  
public class SortUtil { "j#;MOK  
public final static int INSERT = 1; G~b/!clN  
public final static int BUBBLE = 2; i|?EgGFG  
public final static int SELECTION = 3; 4! ]28[2B6  
public final static int SHELL = 4; ixm-wZI  
public final static int QUICK = 5; (,*e\o  
public final static int IMPROVED_QUICK = 6; 7:awUoV8f  
public final static int MERGE = 7; j> Ce06G  
public final static int IMPROVED_MERGE = 8; )z zZYs&|  
public final static int HEAP = 9; 2uujA* ^  
[Q9#44@{S;  
public static void sort(int[] data) { >c %*:a  
sort(data, IMPROVED_QUICK); qS1byqq78l  
} 'M8wjU  
private static String[] name={ T?B753I  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" F6^Xi"R[  
}; _=!R l#  
]06orBV  
private static Sort[] impl=new Sort[]{ uJhB>/Og  
new InsertSort(), " iAwD8-  
new BubbleSort(), j N":9+F  
new SelectionSort(), W/e6O??O  
new ShellSort(), ~U"puEftbs  
new QuickSort(), b/"&E'5-`\  
new ImprovedQuickSort(), 'b1k0 9'  
new MergeSort(), StZ GKY[Q  
new ImprovedMergeSort(), mu`:@7+Yp  
new HeapSort() P`^3-X/  
}; T)4pLN E  
CNP!v\D  
public static String toString(int algorithm){ b`: n i   
return name[algorithm-1]; 4k%y*L  
} &q8oalh  
mcO/V-\5'  
public static void sort(int[] data, int algorithm) { d rRi<7 i  
impl[algorithm-1].sort(data); W@S>#3,  
} nD#QC=}  
QAN :  
public static interface Sort { V&e 9?5@  
public void sort(int[] data); .l1uqCuB  
} "L ,)4v/J  
AIN Fv;  
public static void swap(int[] data, int i, int j) { \; #T.@c5  
int temp = data; f0!i<9<  
data = data[j]; b&]_5 GGc  
data[j] = temp; r2!\Ts5v  
} )c432).Z  
} 9W5~I9%  
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