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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。 $F NH:r<  
插入排序: p{+F{e  
8C@6 b4VK  
package org.rut.util.algorithm.support; .9?GKD  
M{SJ8+G  
import org.rut.util.algorithm.SortUtil; 6C\WX(@4  
/** A (H2Gt D  
* @author treeroot U>@AE  
* @since 2006-2-2 =`UFg >-  
* @version 1.0 }aQ*1Vcj  
*/ [Y j: H  
public class InsertSort implements SortUtil.Sort{ *Ea)b -  
AQ,"):ofvT  
/* (non-Javadoc) }<&?t;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wevd6)\  
*/ pCC^Hxa  
public void sort(int[] data) { Wr-I~>D%_  
int temp; ^m AxV7k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q$sC%P(y  
} q(A_k+NL  
} j8aH*K-l{  
} :#cJZ\YH  
dI>cPqQ  
} bh#6yvpMR  
db&!t!#,  
冒泡排序: \S&OAe/b  
%(]B1Zg6,  
package org.rut.util.algorithm.support; ?bg /%o  
zKp R:F  
import org.rut.util.algorithm.SortUtil; W|"bV 6d3  
uGHM ]"!)  
/** I:6XM?  
* @author treeroot eu":\ks  
* @since 2006-2-2 Z?V vFEt%  
* @version 1.0 7|jy:F,w%  
*/ VLJ]OW8cO  
public class BubbleSort implements SortUtil.Sort{ b"nkF\P@Fj  
J _q  
/* (non-Javadoc) p<?lF   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) reM~q-M~o@  
*/ OR37  
public void sort(int[] data) { J :O&2g"g  
int temp; s_^N=3Si   
for(int i=0;i for(int j=data.length-1;j>i;j--){ %@|)&][hO  
if(data[j] SortUtil.swap(data,j,j-1); &N]e pV>  
} %~kE,^  
} P1Eg%Y6  
} {u -J?(s}  
} _dW#[TCF  
#{#k;va  
} Ro4!y:2|  
e+:X%a4\  
选择排序: A/"2a55  
v#`>  
package org.rut.util.algorithm.support; TK%q}bK,  
|_QpB?b  
import org.rut.util.algorithm.SortUtil; d1D=R8P_u  
W; os4'h$  
/** ?%#no{9  
* @author treeroot ]&9=f#k%  
* @since 2006-2-2 o6:bmKWE  
* @version 1.0 ] SLeWs  
*/ AEDBr<  
public class SelectionSort implements SortUtil.Sort { f6nuh&!-  
UZmo?&y  
/* f.bwA x  
* (non-Javadoc) }RKsS3}   
* TBky+]p@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =#[t!-@  
*/ Q7{{r&|t&  
public void sort(int[] data) { s,kY12<7m  
int temp; aof'shS8  
for (int i = 0; i < data.length; i++) { b5I 8jPj4c  
int lowIndex = i; gm =C0Sp?  
for (int j = data.length - 1; j > i; j--) { ecO$L<9>  
if (data[j] < data[lowIndex]) { ;PnN$g]Q  
lowIndex = j; R3.w")6  
} ]6s/y  
} :SWrx MT  
SortUtil.swap(data,i,lowIndex); H K J^6|'  
} l*huKSX}  
} eVB43]g  
y>#kT  
} \I^"^'CP  
~4O3~Y_+GN  
Shell排序: hl] y):  
SuNc&e#(  
package org.rut.util.algorithm.support; 33wVP}e5  
MPn/"Fij$  
import org.rut.util.algorithm.SortUtil; G N=8;Kq%  
J!G92A~*]  
/** B&<5VjZ\  
* @author treeroot MgN;[4|[h  
* @since 2006-2-2 z`I%3U5(  
* @version 1.0 ,?IXfJ`c  
*/ G2 V$8lh  
public class ShellSort implements SortUtil.Sort{ p#-=mXE/2  
mAY/J0_  
/* (non-Javadoc) >j*0fb!:]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z;BEUtR c  
*/ r dtzz#7  
public void sort(int[] data) { &; p}HL,  
for(int i=data.length/2;i>2;i/=2){ g1_z=(i`Z  
for(int j=0;j insertSort(data,j,i); ?^MH:o  
} .Cs'@[Ciy  
} .IVKgQ B  
insertSort(data,0,1); J><hrZ  
} x]?V*Jz  
vu}U2 0@  
/** !0UfX{.  
* @param data ;l<Hen*  
* @param j 49O_A[(d  
* @param i L{l}G,j<  
*/ cKOXsdH?SL  
private void insertSort(int[] data, int start, int inc) { %cDDu$9;  
int temp; ' V*}d  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); u,}>I%21  
} DMs8B&Y=  
} [;4ak)!  
} I9rQX9#B  
Z#[%JUYp'  
} +ZGH  
k6GQH@y!  
快速排序: `[XH=-p  
0;,Y_61  
package org.rut.util.algorithm.support; 1vCp<D9<  
0(9gTxdB  
import org.rut.util.algorithm.SortUtil; Xc^(e?L4  
;`kOFg#`)c  
/** S4_ZG>\VT  
* @author treeroot fCnwDT  
* @since 2006-2-2 zV;NRf) 9.  
* @version 1.0 p]?eIovi  
*/ zf5%|7o  
public class QuickSort implements SortUtil.Sort{ hkV*UH{  
W<[7LdAB  
/* (non-Javadoc)  j0O1??  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5p:2gsk  
*/ -]Mk} z$  
public void sort(int[] data) { (^sb('"  
quickSort(data,0,data.length-1); 4ji'6JHPg  
} xaV3N[Zd  
private void quickSort(int[] data,int i,int j){ gbh/ `  
int pivotIndex=(i+j)/2; N1'Yo:_A  
file://swap 2chT^3e  
SortUtil.swap(data,pivotIndex,j); 30(e6T;   
NS+uiy  
int k=partition(data,i-1,j,data[j]); -em3 #V  
SortUtil.swap(data,k,j); 1rU\ !GfR  
if((k-i)>1) quickSort(data,i,k-1); B6\/xKmv?8  
if((j-k)>1) quickSort(data,k+1,j); S$R=!3* "V  
i.[k"(  
} JHVndK4L  
/** %u<r_^w5  
* @param data jGJf[:M&Pm  
* @param i 'd;aAG  
* @param j )cZ KB0*+  
* @return W?.xtQEv  
*/ jv1p'qs4  
private int partition(int[] data, int l, int r,int pivot) { K@!hrye  
do{ Z/v )^VR  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); B>z^W+Unyn  
SortUtil.swap(data,l,r); C:bA:O  
} @y0kX<M  
while(l SortUtil.swap(data,l,r); LW("/  
return l; {_z6  
} m}: X\G(6Q  
d~QJ}a  
} IF//bgk-  
-GQ.B{%G  
改进后的快速排序: 2(e;pM2Dq  
=&qfmq  
package org.rut.util.algorithm.support; 9c1q:>|  
#-R]HLW*  
import org.rut.util.algorithm.SortUtil; $U. 2"  
dr(e)eD(R>  
/** YYkgm:[  
* @author treeroot ,.gJ8p(0x  
* @since 2006-2-2 r8FAV9A  
* @version 1.0 ^<v.=7cL0  
*/ Qt^6w}&  
public class ImprovedQuickSort implements SortUtil.Sort { e U-A_5  
/8hjs{(;  
private static int MAX_STACK_SIZE=4096; b+Vlq7Bc  
private static int THRESHOLD=10; !4t%\N6Ib  
/* (non-Javadoc) oW(8bd)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [`KQ \4u  
*/  wJvk  
public void sort(int[] data) { G`;mSq6i  
int[] stack=new int[MAX_STACK_SIZE]; cRf;7G  
~Sd,Tu%:  
int top=-1; 5VfpeA `  
int pivot; @OHNz!Lj:d  
int pivotIndex,l,r; 'Nx"_jQ  
F[.IF5_  
stack[++top]=0; 2Y=Q%  
stack[++top]=data.length-1; "[Tr"nI  
Kj6+$l   
while(top>0){ E!I4I'  
int j=stack[top--]; .Dr7YquW  
int i=stack[top--]; (m.jC}J  
y%YP  
pivotIndex=(i+j)/2; DAEWa Kui  
pivot=data[pivotIndex]; H-X5A\\5  
WFqOVI*l  
SortUtil.swap(data,pivotIndex,j); W^3'9nYU  
l?;ReK.r  
file://partition f9n4/(C y  
l=i-1; u9+)jN<Yh  
r=j; U?(,Z$:N  
do{ p4b6TI9;  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :4COPUBpPV  
SortUtil.swap(data,l,r); J=n^&y  
} sn@)L~$V  
while(l SortUtil.swap(data,l,r); g|!=@9[dv  
SortUtil.swap(data,l,j); Ww{-(Ktx  
-r0oO~KT  
if((l-i)>THRESHOLD){ T(~^X-k  
stack[++top]=i; BTE&7/i 21  
stack[++top]=l-1; dsb z\w3:  
} a<V Mh79*  
if((j-l)>THRESHOLD){ 52.hJNq#L  
stack[++top]=l+1; \}Pr!tk!  
stack[++top]=j; )9!ZkZbv_m  
} 8mX:*$qm:  
Io_7  
} >rh<%55P`  
file://new InsertSort().sort(data); %g4)f9>  
insertSort(data); Q?9eu%G6I  
} _&xkj8O  
/** fAvB!e  
* @param data HlX7A 1i/  
*/ ACgWT  
private void insertSort(int[] data) { &0-Pl.M  
int temp; _'s5FlZq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \z2d=E  
} dBW#PRg  
} ['0^gN$:e  
} IRI<no  
c;R .rV<  
} uYc&Q$U  
Zo,]Dx  
归并排序: a+\s0Qo<  
l02aXxT)]  
package org.rut.util.algorithm.support; P$G|o|h  
W8!8/ IZbN  
import org.rut.util.algorithm.SortUtil; Z ?w=-  
UX'tdB !A  
/** @gJPMgF$F  
* @author treeroot Szlww  
* @since 2006-2-2 _LZ 442  
* @version 1.0 .MRLA G  
*/ iWn7vv/t  
public class MergeSort implements SortUtil.Sort{ It^_?oiK  
F=kiYa}  
/* (non-Javadoc) sZU Ao&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tLx8}@X"  
*/ ]}A yDy6C  
public void sort(int[] data) { v8A{ q  
int[] temp=new int[data.length]; *km - pp  
mergeSort(data,temp,0,data.length-1); jY\YSQ  
} w;^7FuBaC  
0'*'%Iga  
private void mergeSort(int[] data,int[] temp,int l,int r){ Cd7d-'EQn  
int mid=(l+r)/2; <NMOs"NB  
if(l==r) return ; UgLJV2M6  
mergeSort(data,temp,l,mid); mHC36ba  
mergeSort(data,temp,mid+1,r); _Hq)mF  
for(int i=l;i<=r;i++){ gr$H?|n l  
temp=data; )i>T\B  
} H*>5ne=x  
int i1=l; . J*2J(T,  
int i2=mid+1; N" oJ3-~  
for(int cur=l;cur<=r;cur++){ %] 7.E  
if(i1==mid+1) ymyk.#Z<%  
data[cur]=temp[i2++]; !^A t{[U  
else if(i2>r) 2O9OEZdKB  
data[cur]=temp[i1++]; ,1e@Y~eZ  
else if(temp[i1] data[cur]=temp[i1++]; >(a/K2$*1  
else HLM"dmI   
data[cur]=temp[i2++]; N&lKo}hk  
} \[x4  
} .w]S!=h  
 3Kum  
} 90)rOD1B  
hn u/  
改进后的归并排序: YyR~pT#ffT  
w2`j&]D6  
package org.rut.util.algorithm.support; aw/5#(1R  
n 6|\  
import org.rut.util.algorithm.SortUtil; &rxR"^x\  
zX/9^+p:  
/** jl4rEzVu  
* @author treeroot bjq2XP?LL  
* @since 2006-2-2 Mxe  
* @version 1.0 t\C[mw  
*/ ]qc2jut"  
public class ImprovedMergeSort implements SortUtil.Sort { tt>=Vt '  
cb~m==G  
private static final int THRESHOLD = 10; uw@|Y{(K r  
jDc5p3D&[]  
/* wD&b[i  
* (non-Javadoc) <$ Ar*<,6  
* Z?-l-s K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T/C1x9=?  
*/ 1e^-_Bo6'o  
public void sort(int[] data) { (wIpq<%  
int[] temp=new int[data.length]; ouUU(jj02  
mergeSort(data,temp,0,data.length-1); nS1 D&;#Y  
} {%b-~& F9  
x_5H_! \#  
private void mergeSort(int[] data, int[] temp, int l, int r) { ];go?.*C  
int i, j, k; xTL"%'|  
int mid = (l + r) / 2; SLc'1{  
if (l == r) WChJ <[]W  
return; D*j\gI  
if ((mid - l) >= THRESHOLD) QRv2%^L  
mergeSort(data, temp, l, mid); r yO\$m  
else 6y9#am?  
insertSort(data, l, mid - l + 1); ToVm]zPOUt  
if ((r - mid) > THRESHOLD) @YTZnGG*  
mergeSort(data, temp, mid + 1, r); Io&F0~Z;;(  
else 5q?ZuAAA  
insertSort(data, mid + 1, r - mid); b=+'i  
?o9g5Z  
for (i = l; i <= mid; i++) { *^u5?{$l(  
temp = data; Kq;Yb&  
} FiqcM-Af4  
for (j = 1; j <= r - mid; j++) { R{hKl#j;>  
temp[r - j + 1] = data[j + mid]; SpY%2Y.Dy  
} iB5Se  
int a = temp[l]; # -Ts]4v  
int b = temp[r]; UpS`KgF"v  
for (i = l, j = r, k = l; k <= r; k++) { PGHl:4`Es!  
if (a < b) { 6l>$N?a  
data[k] = temp[i++]; xGeRoW(X  
a = temp; 7m=tu?@  
} else { puz~Rfn#*  
data[k] = temp[j--]; X@)5F 9  
b = temp[j]; {e?D6`#x  
} mPxph>o  
} ~8Z0{^  
} :_Y@,CpIEg  
GKwm %A  
/** PDo%ob\Ym  
* @param data eVDI7W:(Sn  
* @param l i1 ?H*:]  
* @param i iVt6rX  
*/ x,z+l-y  
private void insertSort(int[] data, int start, int len) { ?8n`4yO0  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nrMm](Y45  
} D EL#MD!  
} 7!`,P  
} Nq)=E[$  
} n ||/3-HDj  
_}7N,Cx   
堆排序: =x~HcsJ8!R  
+)FB[/pXk  
package org.rut.util.algorithm.support; W9?Vh{w  
T'l >$6  
import org.rut.util.algorithm.SortUtil; {ls$#a+d  
Y zSUJ=0/  
/** 8|w_PP1oE  
* @author treeroot nJ4i[j8  
* @since 2006-2-2 Qsc%qt-l  
* @version 1.0 FMuM:%&J]  
*/ {|6(_SM|  
public class HeapSort implements SortUtil.Sort{ l =ZhHON  
0*q&)  
/* (non-Javadoc) c?CjJ}-7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Ay*'   
*/ _rK}~y=0  
public void sort(int[] data) { b&Qj`j4]ZM  
MaxHeap h=new MaxHeap(); jnX9] PkJ  
h.init(data); !~cTe!T  
for(int i=0;i h.remove(); XFPWW,  
System.arraycopy(h.queue,1,data,0,data.length); DGTSk9iK(  
} Dg4 ?,{c9W  
rm NqS+t  
private static class MaxHeap{ p UWj,&t  
Zycu3%JI  
void init(int[] data){ z)r)w?A  
this.queue=new int[data.length+1]; 3ADT Yt".  
for(int i=0;i queue[++size]=data; '@9h@,tc  
fixUp(size); GH![rK  
} b:Dr _|  
} 'QjX2ytgX  
` a5$VV%J  
private int size=0; !L+*.k:  
|Z<NM#1  
private int[] queue; `(?E-~#'  
qIa|sV\w0  
public int get() { AxUj CerNf  
return queue[1]; -#H>kbs  
} ^ S'}RZ*>  
Ft>Abj,6  
public void remove() { $6T*\(;T@A  
SortUtil.swap(queue,1,size--); `itaQGLD  
fixDown(1); oW(p (>  
} yw2^kk93|  
file://fixdown c-!rJHL`  
private void fixDown(int k) { T%Vii*?M  
int j; 1K&z64Q5J  
while ((j = k << 1) <= size) { [J0L7p*6  
if (j < size %26amp;%26amp; queue[j] j++; Y!v `0z  
if (queue[k]>queue[j]) file://不用交换 G:$wdT(u  
break; w%)=`'s_  
SortUtil.swap(queue,j,k); 6|t4\'  
k = j; BCk$FM@  
} iVzv/Lqm1  
} ~oh=QakW  
private void fixUp(int k) { Z +@"  
while (k > 1) { 2P~zYdjS  
int j = k >> 1; M;={]w@n  
if (queue[j]>queue[k]) b2. xJ4  
break; ]L%qfy4  
SortUtil.swap(queue,j,k); Q2iS0#  
k = j; aHe/MucK  
} ,2/qQD n/  
} a1B_w#?8  
0n|op:]BHM  
} FJgr=9>  
&Jv j@,>$d  
} l2U"4d!o  
1g5%Gr/0$5  
SortUtil: 'H <?K  
i2A>T/?{  
package org.rut.util.algorithm; 9~bje^M  
g= k}6"F~  
import org.rut.util.algorithm.support.BubbleSort; i2/:' i  
import org.rut.util.algorithm.support.HeapSort; Zh]d&Xeq  
import org.rut.util.algorithm.support.ImprovedMergeSort; Glcl7f"<^  
import org.rut.util.algorithm.support.ImprovedQuickSort; `h/j3fmX?  
import org.rut.util.algorithm.support.InsertSort; [S9T@Q  
import org.rut.util.algorithm.support.MergeSort; R3<>]/1p|P  
import org.rut.util.algorithm.support.QuickSort; c 's=>-X  
import org.rut.util.algorithm.support.SelectionSort; 7-.Y VM~R  
import org.rut.util.algorithm.support.ShellSort; ?N<* ATC L  
6]rIYc[,  
/** k5]s~* ,0  
* @author treeroot e'mm42  
* @since 2006-2-2 ! R?r)G5E  
* @version 1.0 snO d 3Bw  
*/ mnu4XE#|  
public class SortUtil { So\(]S  
public final static int INSERT = 1; Q5b?- P  
public final static int BUBBLE = 2; h.ojj$f,  
public final static int SELECTION = 3; i)g=Lew  
public final static int SHELL = 4; mK5<;$  
public final static int QUICK = 5; |\%[e@u  
public final static int IMPROVED_QUICK = 6; kMAQHpDD  
public final static int MERGE = 7; rY_)N^B|nF  
public final static int IMPROVED_MERGE = 8; KlDW'R $  
public final static int HEAP = 9; r4k =i4  
uOc :^  
public static void sort(int[] data) { `Lb^!6`)  
sort(data, IMPROVED_QUICK); Lnbbv  *  
} fDhV *LqW  
private static String[] name={ U0q{8 "Pl  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" LCx{7bN1ro  
}; O&Q_ vY  
N^pTj<M<g  
private static Sort[] impl=new Sort[]{ OACRw%J:X{  
new InsertSort(), $]K gs6=r  
new BubbleSort(), Ol6jx%Je`  
new SelectionSort(), os|8/[gT  
new ShellSort(), "qjkw f)\  
new QuickSort(), 'Ar+k\.J  
new ImprovedQuickSort(), >{p&_u.r-  
new MergeSort(), mk8xNpk B  
new ImprovedMergeSort(), )1wC].RFYm  
new HeapSort() im|( 4 f  
}; M?Tb9c?`  
T_|%n F-+  
public static String toString(int algorithm){ "i_I<?aGB  
return name[algorithm-1]; ~+}w>jIm{|  
} S#6{4x4  
Fxdu)F,~u  
public static void sort(int[] data, int algorithm) { qk;*$Q  
impl[algorithm-1].sort(data); u+UtvzUC  
} b}< T<  
x.CUJ^_.  
public static interface Sort { |1wfLJ4--l  
public void sort(int[] data); (+ q#kKR  
} >=BH$4Ce  
ggtGecKm  
public static void swap(int[] data, int i, int j) { ?TA%P6Lw  
int temp = data; :kz*.1  
data = data[j]; _^;+_6&[  
data[j] = temp; QPB@qx#@  
} 5[}3j1  
} Osncl5PD)  
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