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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。 orH6R8P]  
插入排序: H>+])~#  
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package org.rut.util.algorithm.support; X3 kFJ{  
F}ATY!  
import org.rut.util.algorithm.SortUtil; )`f-qTe  
/** ~ILv*v@m  
* @author treeroot 5)lcgvp  
* @since 2006-2-2 1p$(\  
* @version 1.0 "8ellKh  
*/ Kq-1  b  
public class InsertSort implements SortUtil.Sort{ n9}BT^4 v  
85q/|9D  
/* (non-Javadoc) YRX^fZ-b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,v>;/qm  
*/ %\HPYnIe  
public void sort(int[] data) { 8Sj<,+XFq  
int temp; wGKxT ap  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "T5oUy&i  
} k1f<(@*`  
} cr{yy :D  
} 4A6Y \ZXI  
sA| SOAn  
} T :d+Qz\  
xw 43P.  
冒泡排序: R P<M  
,#3Aaw   
package org.rut.util.algorithm.support; EHm*~Sd  
e,_Sj(R8  
import org.rut.util.algorithm.SortUtil; 0lg'QG>  
(4/"uj5  
/** $Z#~wsw  
* @author treeroot }%/mPbd#  
* @since 2006-2-2 XNJZ~Mowb  
* @version 1.0 #xGP|:m  
*/ j;]I -M[  
public class BubbleSort implements SortUtil.Sort{ !~~KM?g  
RdWn =;  
/* (non-Javadoc) KYm8|]'g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s0f+AS|}  
*/ )__sw  
public void sort(int[] data) { l! 88|~  
int temp; u0&R*YV  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9d#?,:JG  
if(data[j] SortUtil.swap(data,j,j-1); >*ls} q^  
} w+ !c9  
} 1Ys=KA-!_x  
} yV:8>9wE8  
} (l{8Ix s  
{]]%0!n\  
} GEc-<`-  
fGlvum  
选择排序: v9:J 55x  
2[+.* Ef  
package org.rut.util.algorithm.support; pxTtV g.  
;QXg*GNAv$  
import org.rut.util.algorithm.SortUtil; :5%98V>02  
bTimJp[b  
/** C`i#7zsH  
* @author treeroot X1.-C@o  
* @since 2006-2-2 KqntOo} y)  
* @version 1.0 n~ad#iN  
*/ `~)?OTzU#  
public class SelectionSort implements SortUtil.Sort { ?DUim1KG  
HZRFE[ 9nb  
/* t"GnmeH i  
* (non-Javadoc) ,W)DQwAg  
* MSS[-}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?YL J Xq  
*/ B.5+!z&7  
public void sort(int[] data) { e3SnC:OWf  
int temp; Az:~|P  
for (int i = 0; i < data.length; i++) { %lnkD5  
int lowIndex = i; yM@sGz6c!  
for (int j = data.length - 1; j > i; j--) { {im?tZ,  
if (data[j] < data[lowIndex]) { V_J0I*Qa4  
lowIndex = j; &!X<F,  
} HAK,z0/  
} ^t4^gcoZ4Z  
SortUtil.swap(data,i,lowIndex); ';FJs&=I  
} #17 &rizl  
} V*\hGNV  
S}JOS}\^j  
} l}L81t7f  
aH1CX<3)~  
Shell排序: z)C/U  
i6_}  
package org.rut.util.algorithm.support; _{k*JT2  
i;^lh]u  
import org.rut.util.algorithm.SortUtil; Gb `)d  
S2'ai  
/** (_e[CqFu  
* @author treeroot vlkw Wm  
* @since 2006-2-2 $8eiifj  
* @version 1.0 ,@f"WrQ  
*/ &wK:R,~x6  
public class ShellSort implements SortUtil.Sort{ {UP[iw$~  
r 1r@TG\  
/* (non-Javadoc) h^=;\ng1l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ak@!F6~  
*/ zJw5+ +  
public void sort(int[] data) { pmB {b  
for(int i=data.length/2;i>2;i/=2){  aO<7a 6  
for(int j=0;j insertSort(data,j,i); hc q&`Gun  
} %oa@2qJ^  
} GO"|^W  
insertSort(data,0,1); bfz7t!A)A  
} ~ q-Z-MA  
C7{VByxJ  
/** SDC|>e9i  
* @param data t7-]OY7%w_  
* @param j jI\@<6O  
* @param i _ZhQY,  
*/ =_-u;w1D  
private void insertSort(int[] data, int start, int inc) { % vUU Fub  
int temp; ]`$yY5&W0  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Mrrpm% Y  
} J;_4 3eS  
} AA=Ob$2$  
} i RrUIWx  
vGv<WEE  
} ]4H)GWHKg  
_|M8xI  
快速排序: \o[][R#D  
c_vGr55  
package org.rut.util.algorithm.support; ,A`|jF  
EF :g0$  
import org.rut.util.algorithm.SortUtil; !j'LZ7  
5T#v &  
/** } KyoMs  
* @author treeroot ?]D&D:Z?I  
* @since 2006-2-2 <CuUwv 'A  
* @version 1.0 iUcX\ uW  
*/ ~4~r  
public class QuickSort implements SortUtil.Sort{ 0`S{>G  
*MmH{!=  
/* (non-Javadoc) 5oG~Fc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nUj`#%  
*/ f1aZnl  
public void sort(int[] data) { htbE Q NW  
quickSort(data,0,data.length-1); I;'{X_9$a  
} Nt $4;  
private void quickSort(int[] data,int i,int j){ ]Y I9  
int pivotIndex=(i+j)/2; eX#.Zt]  
file://swap 9o>D Uc  
SortUtil.swap(data,pivotIndex,j); yx|iZhK0:}  
>)M1X?HI5  
int k=partition(data,i-1,j,data[j]); .@)vJtH)  
SortUtil.swap(data,k,j); L/rf5||@  
if((k-i)>1) quickSort(data,i,k-1); P{A})t7  
if((j-k)>1) quickSort(data,k+1,j); :L@ ;.s  
~o_JZ:  
} L-`V^{R]  
/** 4q]6[/  
* @param data Cl&mz1Y;]1  
* @param i 4E.9CjN1>  
* @param j ^(:~8 h  
* @return E:8*o7  
*/ BmV `<Q,  
private int partition(int[] data, int l, int r,int pivot) { 8  *f 9  
do{ 5.VPK 338A  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); eaf-_#qb  
SortUtil.swap(data,l,r); fhN\AjB6Td  
} } TUr96  
while(l SortUtil.swap(data,l,r); oVK:A;3T|  
return l; a,oTU\m C  
} PoaCnoNS  
s\ C ,5  
} rEWJ3*Hb  
"yQBHYP  
改进后的快速排序: [mv? \HDa~  
9 3)fC  
package org.rut.util.algorithm.support; ^Saf z8-3o  
*4 LS``  
import org.rut.util.algorithm.SortUtil; K[iAN;QCe%  
]|!|3lQ  
/** nPvys~D  
* @author treeroot mBwz.KEm<  
* @since 2006-2-2 8D)1ZUx7`  
* @version 1.0 2J t{oh|  
*/ ;l!<A  
public class ImprovedQuickSort implements SortUtil.Sort { 3H!]X M  
i_N8)Z;r  
private static int MAX_STACK_SIZE=4096; HFP'b=?`]|  
private static int THRESHOLD=10; AI3x,rk#  
/* (non-Javadoc) ;wMu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZS+m}.,whQ  
*/ 8i[TeW"  
public void sort(int[] data) { Kuh3.1#o  
int[] stack=new int[MAX_STACK_SIZE]; H (;@7dh  
$!wU [/k  
int top=-1; W<)nC_$  
int pivot; 2z !05]B%  
int pivotIndex,l,r; L~PiDQr?r  
{g nl6+j  
stack[++top]=0; _0$>LWO~  
stack[++top]=data.length-1; GY?u+|Q  
~v(c9I)  
while(top>0){ 7u;N/@  
int j=stack[top--]; 05H:ZrUV  
int i=stack[top--]; 2+y wy^  
i ed 1+H  
pivotIndex=(i+j)/2; >g !Z|ju  
pivot=data[pivotIndex]; H_f8/H  
wzy[sB274  
SortUtil.swap(data,pivotIndex,j); o}r_+\n  
!IR cv a  
file://partition _}[WX[Le{  
l=i-1; AsE77AUA  
r=j; r1 :TM|5L  
do{ wA$?e}  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7HW:;2dL  
SortUtil.swap(data,l,r); yL asoh  
} :"# "{P  
while(l SortUtil.swap(data,l,r); -Wa<}Tz  
SortUtil.swap(data,l,j); CP\[9#]:  
YZfi-35@g  
if((l-i)>THRESHOLD){ 0B8Wf/j?M  
stack[++top]=i; BTwc(oL  
stack[++top]=l-1; ngZq]8 =o  
} KgM|:'  
if((j-l)>THRESHOLD){ .t[u_tBL  
stack[++top]=l+1; )T9Cv8  
stack[++top]=j; ~/A2 :}Cp=  
} NpGi3>5  
>QYx9`x&  
} Vfzy BjQ  
file://new InsertSort().sort(data); ?<.a>"!  
insertSort(data); $s=` {vv  
} h{7>>  
/** `\(co;:  
* @param data 4~1b  
*/ KKk~vwW  
private void insertSort(int[] data) { 9~=zD9,|iA  
int temp; %0y-f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Lbo3fwW  
} 07>m*1G  
} iC hIW/H  
} wg[ +NWJ  
L *\[;.mk  
} ??e|ec2%  
x7 e0&  
归并排序: F^{31iU~CX  
zf)*W#+  
package org.rut.util.algorithm.support; 4r_*: $g  
'2Zs15)V  
import org.rut.util.algorithm.SortUtil; nW]CA~  
y(<{e~  
/** }.D18bE(  
* @author treeroot V?yQm4  
* @since 2006-2-2 MPnMLUB$\  
* @version 1.0 &V 7J5~_  
*/ :j~4mb?$  
public class MergeSort implements SortUtil.Sort{ ;Egl8Vhr  
6I(Y<LZ5  
/* (non-Javadoc) {.oz^~zs]g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >!Y#2]@}o  
*/ J#H,QYnf(L  
public void sort(int[] data) { v(Kj6'  
int[] temp=new int[data.length]; %cDGs^lgA  
mergeSort(data,temp,0,data.length-1); Ndl{f=sjX-  
} !L;_f'\)6  
vG6*[c8  
private void mergeSort(int[] data,int[] temp,int l,int r){ i{N?Y0YQs0  
int mid=(l+r)/2; A-B>VX  
if(l==r) return ; Ln6emXqw  
mergeSort(data,temp,l,mid); " ]k}V2l  
mergeSort(data,temp,mid+1,r); ';\norx;  
for(int i=l;i<=r;i++){ shdzkET8N  
temp=data; WYRC_U7  
} eK(k;$4\^Y  
int i1=l; v B~VJKD  
int i2=mid+1; dY. X/f  
for(int cur=l;cur<=r;cur++){ eN5F@isy  
if(i1==mid+1) ?A\+s,9  
data[cur]=temp[i2++]; bbS,pid1  
else if(i2>r) NApy(e 5%  
data[cur]=temp[i1++]; IHCxM|/k(M  
else if(temp[i1] data[cur]=temp[i1++]; LtwfL^#  
else 88:YU4:l`N  
data[cur]=temp[i2++]; VDv.N@ ) 7  
} zk3\v "  
} 28M^ F~0  
9Bpb?  
} ?{ \7th37  
id+EBVHAd  
改进后的归并排序: :I /9j=@1  
\kKd:C{  
package org.rut.util.algorithm.support; wbr$w>n  
V%;dTCq  
import org.rut.util.algorithm.SortUtil; R f)|p;  
XySkm2y  
/** f'"PQr^9  
* @author treeroot /T  {R\  
* @since 2006-2-2 ~C>;0a;<:  
* @version 1.0 `K@N\VM  
*/ lxZ9y  
public class ImprovedMergeSort implements SortUtil.Sort { {4SaS v^/  
tUJe-3,  
private static final int THRESHOLD = 10; 0FL'8!e<  
T1RY1hb|g>  
/* 9MJ:]F5+  
* (non-Javadoc) .K-d  
* 9 4bDJy1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1NZpd'$c  
*/ L~h:>I+pG  
public void sort(int[] data) { 7s%1?$B  
int[] temp=new int[data.length]; vMX\q  
mergeSort(data,temp,0,data.length-1); ~ m vv :u  
} 3rZPVR$))  
dtV*CX.D.7  
private void mergeSort(int[] data, int[] temp, int l, int r) { sqF.,A,  
int i, j, k; CD#U`jf  
int mid = (l + r) / 2; /W f.Gt9[  
if (l == r) #D(=[F  
return; |;aZi?Ek[  
if ((mid - l) >= THRESHOLD) "ivVIq2  
mergeSort(data, temp, l, mid); j p}.W  
else ldU ><xc2  
insertSort(data, l, mid - l + 1); OU/3U(%n]e  
if ((r - mid) > THRESHOLD) ]X7_ji(l,  
mergeSort(data, temp, mid + 1, r); .i?{h/9y  
else Hsov0  
insertSort(data, mid + 1, r - mid); (6H 7?nv  
=],c$)  
for (i = l; i <= mid; i++) { Z s| *+[  
temp = data; !jEV75  
} "p+oi@  
for (j = 1; j <= r - mid; j++) { iM9k!u FE  
temp[r - j + 1] = data[j + mid]; xrY >Or  
} c>c4IQ&d  
int a = temp[l]; |FaK =e  
int b = temp[r]; j5n"LC+oz  
for (i = l, j = r, k = l; k <= r; k++) { )BaGY  
if (a < b) { J^DyhCs  
data[k] = temp[i++]; A? jaS9 &)  
a = temp; :.BjJ2[S  
} else { *yZta:(w-W  
data[k] = temp[j--]; >}0H5Q8@  
b = temp[j]; 1PWi~1q{Q  
} 3 AP=  
} Yc)Dx3  
} &{wRBl#  
mo4F\$2N  
/** RxPD44jVA  
* @param data f2KH&j>~r  
* @param l .bV^u  
* @param i )FA:wsy~E  
*/ FW3E UC)P  
private void insertSort(int[] data, int start, int len) { Xfb-< Q0A  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); i 8cmT+}>  
} U"UsQYa_  
} @kT@IQkri  
} i-WP#\s  
} &>Y.$eW_  
-!T24/l  
堆排序: H8@z/  
*U\`HUW  
package org.rut.util.algorithm.support; 7FaF]G  
})PU`?f  
import org.rut.util.algorithm.SortUtil; lFA-T I&  
M0vX9;J  
/** j g EYlZ  
* @author treeroot 8/P!i2o  
* @since 2006-2-2 /UR;,ts  
* @version 1.0 >*^SQ{9  
*/ zrE{CdG%y  
public class HeapSort implements SortUtil.Sort{ h<CRW-  
ns/*WH&[x  
/* (non-Javadoc) S5L0[SZ$!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #+h#b%8  
*/ Mbly-l{|  
public void sort(int[] data) { D#Mz#\4o  
MaxHeap h=new MaxHeap(); Lcy6G%A  
h.init(data); AEFd,;GF  
for(int i=0;i h.remove(); eAQ-r\h'2  
System.arraycopy(h.queue,1,data,0,data.length); Z)3oiLmD  
} |hDN$By  
 h y\iot  
private static class MaxHeap{ R:^jQ'1  
}U}ppq0Eo  
void init(int[] data){ 0E3;f;'X  
this.queue=new int[data.length+1]; QQ =tiW  
for(int i=0;i queue[++size]=data; w:1UwgcPC  
fixUp(size); JnQ@uZb`  
} ,a2=OV  
} "N,@J-]/k  
Gt,VSpb~s  
private int size=0; o=lZl_5/u;  
v}!^RW 'X  
private int[] queue; ='e_9b\K  
KNF{NFk  
public int get() { )C0I y.N-  
return queue[1]; uXA}" f2  
} S]e;p\8$Z  
( Y Z2&  
public void remove() { S,Qa\\~z  
SortUtil.swap(queue,1,size--); 64'sJc.   
fixDown(1); 7^#O{QYol  
} (\ |Go-2G  
file://fixdown rof9Rxxe-  
private void fixDown(int k) {  ME5M;bz(  
int j; PyQ\O*  
while ((j = k << 1) <= size) { G ,`]2'(@  
if (j < size %26amp;%26amp; queue[j] j++; &g8Xjx&zj  
if (queue[k]>queue[j]) file://不用交换 rNke&z:%X_  
break; @!!5el {  
SortUtil.swap(queue,j,k); Smh=Q4,W  
k = j; $p }q,f.  
} E;k$ICOXA  
} }1a(*s,s-^  
private void fixUp(int k) { XZTH[#MqeI  
while (k > 1) { /Ea&Zm  
int j = k >> 1; (2RuQgO  
if (queue[j]>queue[k]) B\ZCJaMb  
break; ^%U`|GBZp  
SortUtil.swap(queue,j,k); +t]Ge >S  
k = j; R_:lp\S&  
} ;jKLB^4nX  
} fNrpYR X  
Psf{~ (Ii  
} e?GzvM'2  
^>fr+3a"P  
} 3@0!]z^W  
*^Z -4  
SortUtil: {uqP+Cs  
w H`GzB"  
package org.rut.util.algorithm; Ty;^3  
kH[thR k}  
import org.rut.util.algorithm.support.BubbleSort; $P #KL//  
import org.rut.util.algorithm.support.HeapSort;  T#Z#YMk  
import org.rut.util.algorithm.support.ImprovedMergeSort; O_DT7;g  
import org.rut.util.algorithm.support.ImprovedQuickSort; m_;XhO  
import org.rut.util.algorithm.support.InsertSort; 16~5;u  
import org.rut.util.algorithm.support.MergeSort; ?. L]QU  
import org.rut.util.algorithm.support.QuickSort; }Os7[4 RW  
import org.rut.util.algorithm.support.SelectionSort; @JJ{\?>  
import org.rut.util.algorithm.support.ShellSort; ,s,AkH  
W$z^U) |t  
/** NR^3 1&}It  
* @author treeroot F*4G@)  
* @since 2006-2-2 zRR^v&.9K  
* @version 1.0 ki ?V eFp  
*/ _Qb ].~  
public class SortUtil { lI9|"^n7F  
public final static int INSERT = 1; ZV-Yq !|t  
public final static int BUBBLE = 2; ,L\KS^>  
public final static int SELECTION = 3; Izfq`zS+\s  
public final static int SHELL = 4; O? 7hT!{  
public final static int QUICK = 5; _~y-?(46K  
public final static int IMPROVED_QUICK = 6; mF>{cVTF  
public final static int MERGE = 7; {JfL7%  
public final static int IMPROVED_MERGE = 8; zUWWXC%R  
public final static int HEAP = 9; GIS,EwA  
_( QW2m?K  
public static void sort(int[] data) { *M$$%G(4  
sort(data, IMPROVED_QUICK); MiMDEe%f%  
} Ud#xgs'  
private static String[] name={ 1b2xWzpG  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Xw162/:h  
}; 8xoC9!xt  
K8v@)  
private static Sort[] impl=new Sort[]{ a,xy3 8T<  
new InsertSort(), 0p*Oxsy  
new BubbleSort(), w)>/fG|;  
new SelectionSort(), $WQm"WAKe  
new ShellSort(), HoZsDs.XZ  
new QuickSort(), P qa;fiJ)  
new ImprovedQuickSort(), Rf{YASPIw&  
new MergeSort(), q9Lq+4\  
new ImprovedMergeSort(), ~x+&cA-0A2  
new HeapSort() Saks~m7,  
}; C&.Q|S2_  
 Q 6r  
public static String toString(int algorithm){ WvcPOt8Bp>  
return name[algorithm-1]; 1[e%E#h  
} }e>OmfxDBt  
uJ3*AO  
public static void sort(int[] data, int algorithm) { %)o;2&aD  
impl[algorithm-1].sort(data); LP?*RrM  
} ztC,[   
1E$^ul-v  
public static interface Sort { V'l9fj*E  
public void sort(int[] data); "Q[?W( SA  
} ;F /w&u.n  
}l5Q0'  
public static void swap(int[] data, int i, int j) { T^2o' _:  
int temp = data; q9nQ/]rkHF  
data = data[j]; MX|@x~9W  
data[j] = temp; _u#r;h[  
} 5^N` ~  
} h0-CTPQ7A  
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