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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。 !o A,^4(  
插入排序: 1muB* O  
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package org.rut.util.algorithm.support; ;Js-27_0  
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import org.rut.util.algorithm.SortUtil; 5x";}Vp>P  
/** G[7Z5)2B  
* @author treeroot fN4d^0&  
* @since 2006-2-2 *^]Hqf(`  
* @version 1.0 S i[:l  
*/ $J8?!Xg  
public class InsertSort implements SortUtil.Sort{ ;E? Z<3{  
gp Aqz Y  
/* (non-Javadoc) NijvFT$V1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  +z/_'DE  
*/ Q9v OY8  
public void sort(int[] data) { A|!u`^p  
int temp; nZ>8r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CT1)tRN  
} cfn\De%.  
} LIM cZh;  
} 24u;'i-y5  
@"[xX}xK;  
} JVO,@~~  
$ f`\TKlN  
冒泡排序: &m@~R|  
nSWW^ ;  
package org.rut.util.algorithm.support; (7 i@ @  
"o+E9'Dm  
import org.rut.util.algorithm.SortUtil; sB|>\O#-  
tBSHMz  
/** SM3Q29XIw  
* @author treeroot 6ybpPls  
* @since 2006-2-2 [d+f#\ut  
* @version 1.0 Oy>u/g~  
*/ VFUuG3p)  
public class BubbleSort implements SortUtil.Sort{ 7s#,.(s  
`Mj>t(  
/* (non-Javadoc) :q6j{C(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "YY6_qQR'  
*/ ` drds  
public void sort(int[] data) { <=fYz^|XT  
int temp; 7A!E~/nSC  
for(int i=0;i for(int j=data.length-1;j>i;j--){ k+8K[ ?K-  
if(data[j] SortUtil.swap(data,j,j-1); tYE\tbCO'  
} =7&2-'(@  
} ,Jqi J?,4C  
} M<'AM4  
} |etA2"r&  
k%UE^  
} <[7 bUB  
`~${fs{-`/  
选择排序: Tk(ciwB  
O3Jp:.ps  
package org.rut.util.algorithm.support; ,Mt/*^|  
U-uBz4Gha  
import org.rut.util.algorithm.SortUtil; ][Ne;F6  
rnB-e?>  
/** zT;F4_p3G-  
* @author treeroot 5v&mK 5zZ  
* @since 2006-2-2 ,MH9e!  
* @version 1.0 & ,KxE(C  
*/ u;{,,ct  
public class SelectionSort implements SortUtil.Sort { Qfx:}zk{  
8T3j/ D<r  
/* 37:\X5)z/  
* (non-Javadoc) $9_yD&&  
* Dwvd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @qC](5|TQ  
*/ *{}Y :  
public void sort(int[] data) { (`z`ni  
int temp; Iu<RwB[#Q  
for (int i = 0; i < data.length; i++) { ^cQTRO|  
int lowIndex = i; "qb1jv#to  
for (int j = data.length - 1; j > i; j--) { =&kd|o/i  
if (data[j] < data[lowIndex]) { b:OQ/  
lowIndex = j; )ad-p.Hus  
} ryk(Am<  
} :BIgrz"Jz  
SortUtil.swap(data,i,lowIndex); I/F3%'O  
} ~7$NVKE  
} =#tQhg,_  
Z?IwR  
} }3{ x G+,  
jrOqspv   
Shell排序: . fZ*N/  
]yvHb)X  
package org.rut.util.algorithm.support; Fo$kD(  
!N, Oe<  
import org.rut.util.algorithm.SortUtil; 7hg)R @OC  
s<}d)L(  
/** ^#^\@jLm  
* @author treeroot jJ(()EJ  
* @since 2006-2-2 8efQ -^b.  
* @version 1.0 WH@CH4WM  
*/ _trF/U<  
public class ShellSort implements SortUtil.Sort{ ;r**`O  
JjD'2"z  
/* (non-Javadoc) Bu:h_sV D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @k"Q e&BQ  
*/ W,\LdQ  
public void sort(int[] data) { 7U:-zfq  
for(int i=data.length/2;i>2;i/=2){ "r:i  
for(int j=0;j insertSort(data,j,i); L)0j&  
} YlF<S49loC  
} e:&+m`OSH  
insertSort(data,0,1); mBp3_E.t  
} i4',d#  
nUgZ]ag=G  
/** -AJ$-y  
* @param data Nb[zm|.  
* @param j ;w\7p a  
* @param i eM3-S=R?<g  
*/ V>8)1)dF  
private void insertSort(int[] data, int start, int inc) { s>pOfXIx  
int temp; fV 6$YCf  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); eU[f6OGqC  
} aJQx"6 c?  
} AK7IPftlH  
} Lc0 U-!{G  
BdK2I!mm  
} S:\a&+og  
\0{g~cU4  
快速排序: mnZS](>  
7tEK&+H`  
package org.rut.util.algorithm.support; %Ydzzr3  
u:6PAVW?  
import org.rut.util.algorithm.SortUtil; ` |L l  
} Fw/WD  
/** I3{koI  
* @author treeroot eHjna\C  
* @since 2006-2-2 X2 Z E9b  
* @version 1.0 j.'Rm%@u  
*/ -<R"  
public class QuickSort implements SortUtil.Sort{ #[4MwM3  
]m>N!Iu  
/* (non-Javadoc) %XpYiW#AK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @,Re<%\  
*/ Q%seV<!/  
public void sort(int[] data) { oicj3xkw?  
quickSort(data,0,data.length-1); ^m3[mY [a  
} ?|&plf |  
private void quickSort(int[] data,int i,int j){ IT.'`!T  
int pivotIndex=(i+j)/2; DgJG: D{  
file://swap 1z4s1 Y  
SortUtil.swap(data,pivotIndex,j); ;}=4z^^5  
CdTyUl  
int k=partition(data,i-1,j,data[j]); UUzu`>upB  
SortUtil.swap(data,k,j); q,<AW>  
if((k-i)>1) quickSort(data,i,k-1); cH5@Jam  
if((j-k)>1) quickSort(data,k+1,j); <])w@QOA#  
_?5$ST@5  
} WWO@ULGY  
/** l&]Wyaz@n  
* @param data Y|s?9'z  
* @param i ?q68{!{bi  
* @param j W?(^|<W  
* @return :%#(<@{  
*/ l c<&f  
private int partition(int[] data, int l, int r,int pivot) { +2}aCoL\  
do{ q=o"] 6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); wU\3"!^h  
SortUtil.swap(data,l,r); 1I'ep\`"X  
} JD\:bI  
while(l SortUtil.swap(data,l,r); 91Cg   
return l; `=]I -5#.W  
} JG2)-x;9  
G8JwY\  
} WsA(8Ck<  
dM A"% R  
改进后的快速排序: B!Ss 35<  
R!v ?d2  
package org.rut.util.algorithm.support; .js@F/H p  
fP>K!@!8  
import org.rut.util.algorithm.SortUtil; zH0{S.3 k  
u}Q@u!~e9  
/** "TWNit  
* @author treeroot ^,Sl^ 9K  
* @since 2006-2-2 SI:+I4i  
* @version 1.0 [WOLUb  
*/ }y-b<J ?H  
public class ImprovedQuickSort implements SortUtil.Sort { $/sQatic  
HiBw==vlV  
private static int MAX_STACK_SIZE=4096; Ax#$z  
private static int THRESHOLD=10; N Fc@Kz<H  
/* (non-Javadoc) %"R|tlG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sK#)wjj\^  
*/ -Oo7]8  
public void sort(int[] data) { ^-CQ9r*  
int[] stack=new int[MAX_STACK_SIZE]; @wWro?s'p  
_084GK9{W  
int top=-1; it2@hZc5  
int pivot; `-l, `7e'  
int pivotIndex,l,r; JRMe( ,u  
(6C%w)8'  
stack[++top]=0; 0Ey*ci^ue  
stack[++top]=data.length-1; LL~bq(b  
wIW]uo/=  
while(top>0){ rYnjQr2a  
int j=stack[top--]; 1/t}>>,M  
int i=stack[top--]; LB<,(dyh  
*$ZLu jy7  
pivotIndex=(i+j)/2; giy4<  
pivot=data[pivotIndex]; ( }DCy23  
<y+8\m  
SortUtil.swap(data,pivotIndex,j); 6Xjr0 C+  
5feCA ,v7  
file://partition fJ[(zjk  
l=i-1; `>@n6>f  
r=j; ,q yp2Y7  
do{ Qt_LBJUWV  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); D`=hP( y^  
SortUtil.swap(data,l,r); UR~9*`Z ,  
} $ ]/a/!d  
while(l SortUtil.swap(data,l,r); 9aw- n*<  
SortUtil.swap(data,l,j); l\W[WQP h  
K!q:A+]  
if((l-i)>THRESHOLD){ a7#J af  
stack[++top]=i; pZR KM<k  
stack[++top]=l-1; |V2+4b,  
} Ju$vuEO  
if((j-l)>THRESHOLD){ LPgP;%ohO/  
stack[++top]=l+1; z.f~wAT@<  
stack[++top]=j; h' OLj#H  
} m/"\+Hv  
Z9rs,_A  
} =N-,.{`  
file://new InsertSort().sort(data); i"uAT$xe  
insertSort(data); uy~KJn?Tu  
} 28L3"c  
/** pb~&gliW  
* @param data K[ZgT$zZ  
*/ * pN,@ZV$  
private void insertSort(int[] data) { ,*fvA?  
int temp; U!sv6=(y@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZFy>Z:&S,  
} @b=b>V[d6  
} ,4 ftQJ  
} /#?lG`'1  
Z7&Bn  
} D/_=rAl1  
FAAqdK0  
归并排序: Do}mCv  
y: @[QhV  
package org.rut.util.algorithm.support; &UG7 g  
aTC7H]e  
import org.rut.util.algorithm.SortUtil; Z3=DM=V;v  
pmAir:  
/** e.eQZ5n~q`  
* @author treeroot Ek'  
* @since 2006-2-2 Au'[|Pr r  
* @version 1.0 *B(na+  
*/ VIL #q  
public class MergeSort implements SortUtil.Sort{ b'fj  
e!}R1  
/* (non-Javadoc) >S5:zz\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?\:ysTVu  
*/ dX0A(6  
public void sort(int[] data) { >G<AyS&z*  
int[] temp=new int[data.length]; WF<0QH  
mergeSort(data,temp,0,data.length-1); FA\gz?h  
} mP GF Y  
Nko;I?Fn  
private void mergeSort(int[] data,int[] temp,int l,int r){ b w5|gmO  
int mid=(l+r)/2; =rS z>l  
if(l==r) return ; :NHh`@0F  
mergeSort(data,temp,l,mid); <#ujm fD  
mergeSort(data,temp,mid+1,r);  5I5~GH  
for(int i=l;i<=r;i++){ , %X~/V  
temp=data; `':$PUz,g  
} s]0x^"#B  
int i1=l; 0mL#8\'"  
int i2=mid+1; }Tn]cL{]C  
for(int cur=l;cur<=r;cur++){ "2(4?P  
if(i1==mid+1) {U4BPKof  
data[cur]=temp[i2++]; %"@KuqV  
else if(i2>r) N. 3 x[%:  
data[cur]=temp[i1++]; DGdSu6s$  
else if(temp[i1] data[cur]=temp[i1++]; xtN%v0ZZ  
else lKEdpF<  
data[cur]=temp[i2++]; 3.B|uN  
} `p9h$d  
} OUn,URI  
GEy^*, d  
} X:+;d8rCy  
$zq`hI!1  
改进后的归并排序: #)_4$<P*'  
XX~~SvSM  
package org.rut.util.algorithm.support; ;id0|x  
Q u2W  
import org.rut.util.algorithm.SortUtil; ZeF PwW  
LnvC{#TFO  
/** s CSrwsbhv  
* @author treeroot SfQ ,uD6  
* @since 2006-2-2 $d%m%SZxv  
* @version 1.0 #/!a=0  
*/ '>_'gR0O  
public class ImprovedMergeSort implements SortUtil.Sort { W1M<6T.{7  
CHv~H.kh'  
private static final int THRESHOLD = 10; XJDp%B  
*^ncb,1+i  
/* rgdDkWLXC  
* (non-Javadoc) phwk0J]2  
* |/[?]`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5`*S'W}\>  
*/ 2ksX6M3kY  
public void sort(int[] data) { i[H`u,%+(  
int[] temp=new int[data.length]; ,95Nj h  
mergeSort(data,temp,0,data.length-1); ,ClGa2O  
} ZJ'#XZpr  
K/KZ}PI-O  
private void mergeSort(int[] data, int[] temp, int l, int r) { l_Ftt N  
int i, j, k; /=A^@&:_#  
int mid = (l + r) / 2; +rfw)c'  
if (l == r) 'J#u ;KJ  
return; J,%v`A~ N  
if ((mid - l) >= THRESHOLD) %fnL  
mergeSort(data, temp, l, mid); u.x>::i&  
else .&=nP?ZPC6  
insertSort(data, l, mid - l + 1); <5rp$AzT  
if ((r - mid) > THRESHOLD) lX/s Q  
mergeSort(data, temp, mid + 1, r); xCz(qR  
else 9'faH  
insertSort(data, mid + 1, r - mid); vzM8U>M  
[U.3rcT"N  
for (i = l; i <= mid; i++) { t J N;WK.6  
temp = data; 4UT %z}[!  
} cm@q{(r  
for (j = 1; j <= r - mid; j++) { x;dyF_*;  
temp[r - j + 1] = data[j + mid]; IWERn v!  
} '`&gSL.1a@  
int a = temp[l];  0eUK'   
int b = temp[r]; G?)NDRM  
for (i = l, j = r, k = l; k <= r; k++) { $!%/Kk4M  
if (a < b) {  yaza  
data[k] = temp[i++]; 6^y*A!xY  
a = temp; uOUgU$%zqH  
} else { w$8Su:g=  
data[k] = temp[j--]; :6~Nq/hZB  
b = temp[j]; e=&,jg?K  
} E j`  
} :_V9Jwu  
} 4v9jGwnzt  
kKL'rT6z  
/** X)^eaw]Q0  
* @param data ea[vzD]  
* @param l 7.mY@  
* @param i Ro3C(aRx  
*/ F3+ ;2GG2  
private void insertSort(int[] data, int start, int len) { dZ}gf}.v  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nX%b@cOXj  
} U|SF;T .  
} p_%dH  
} VZuluV  
} Nc;cb  
&iKy  
堆排序: *g7BR`Bt]z  
kq|(t{@Rp  
package org.rut.util.algorithm.support; &?X0;,5)  
ov;1=M~RF  
import org.rut.util.algorithm.SortUtil; "[h9hoN  
C\ 2rSyo  
/** ;IyA"C(i  
* @author treeroot ]M3V]m  
* @since 2006-2-2 iW u  
* @version 1.0 c_"=G#^9@i  
*/ F(h jP  
public class HeapSort implements SortUtil.Sort{ w{F{7X$^  
\jA#RF.W  
/* (non-Javadoc) zm>^!j !  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IQZ/8UwB  
*/ hK]mnA[Y  
public void sort(int[] data) { /3Y\s&y  
MaxHeap h=new MaxHeap(); YMSZcI  
h.init(data); i?{)o]i  
for(int i=0;i h.remove(); B^;"<2b*  
System.arraycopy(h.queue,1,data,0,data.length); wWkMvs  
} KC+jHk  
L2\<iJA}c  
private static class MaxHeap{ '[WVP=M<XV  
<n1panS  
void init(int[] data){ Q DVk7ks  
this.queue=new int[data.length+1]; j+"w2  
for(int i=0;i queue[++size]=data; 52,[dP,g  
fixUp(size); Wn%b}{9Fb  
} UaCfXTG  
} Q{[l1:  
TJ_Wze-lQ  
private int size=0; /7N&4FrG  
?lca#@f(  
private int[] queue; -DuI 6K  
P,J+'.@  
public int get() { kqkTz_r|H  
return queue[1]; d/Sw.=vq  
} +'|nsIx,  
b#nI#!p'  
public void remove() { < k?pnBI_  
SortUtil.swap(queue,1,size--); oGRd ;hsF  
fixDown(1); F|a'^:Qs  
} (kTu6t*  
file://fixdown `r'$l<(4WV  
private void fixDown(int k) { r;^%D(  
int j; h+R26lI1x  
while ((j = k << 1) <= size) { eo*l^7  
if (j < size %26amp;%26amp; queue[j] j++; ZsNZ3;d@u(  
if (queue[k]>queue[j]) file://不用交换 ds2%i  
break; q|{z9V<  
SortUtil.swap(queue,j,k); Zg%tN#6y  
k = j; GT7&>}FJ)  
} ck< `kJ`b  
} esiU._:u  
private void fixUp(int k) { < 1%}8t"  
while (k > 1) { 7gcR/HNeF  
int j = k >> 1; ;f~fGsH}e'  
if (queue[j]>queue[k]) fGd1  
break; ypgM&"eR  
SortUtil.swap(queue,j,k); -2[#1S*  
k = j; ur.krsU  
} -{}h6r  
} bg!(B<!X  
"O'c.v?{x  
} @j!(at4B  
$q*a}d[Q  
} A=0{}B#  
;\v&4+3S  
SortUtil: H C=ZcK'W  
k'_f?_PBu  
package org.rut.util.algorithm; @t a:9wZ  
,]@K,|pC)  
import org.rut.util.algorithm.support.BubbleSort; DS;\24>H  
import org.rut.util.algorithm.support.HeapSort; 0hhxTOp  
import org.rut.util.algorithm.support.ImprovedMergeSort; Zs]n0iwM'@  
import org.rut.util.algorithm.support.ImprovedQuickSort; n"`V| UTHP  
import org.rut.util.algorithm.support.InsertSort; z#Fel/L`O  
import org.rut.util.algorithm.support.MergeSort; gs3c1Qa3b  
import org.rut.util.algorithm.support.QuickSort; ZH|q#< {l  
import org.rut.util.algorithm.support.SelectionSort; EjFn\|VK  
import org.rut.util.algorithm.support.ShellSort; c9G%;U)  
S]ayH$w\Q  
/** t=X=",)f  
* @author treeroot ]tXIe?>9  
* @since 2006-2-2 R:+'"dBge  
* @version 1.0 X4 ] miUmh  
*/ er5!n e  
public class SortUtil { %.hJDX\j  
public final static int INSERT = 1; 5'NNwc\  
public final static int BUBBLE = 2; KJV8y"^=Q  
public final static int SELECTION = 3; 5+11J[~{  
public final static int SHELL = 4; `kJ)E;v;3  
public final static int QUICK = 5; P JATRJ1.  
public final static int IMPROVED_QUICK = 6; Q 8Hl7__^  
public final static int MERGE = 7; A yr ,  
public final static int IMPROVED_MERGE = 8; M 9-Q  
public final static int HEAP = 9; &9^4- 5]  
u178vby;l  
public static void sort(int[] data) { /='0W3+o*L  
sort(data, IMPROVED_QUICK); zt: !hM/Vt  
} xh bN=L  
private static String[] name={ v@|<.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" hcj]T?  
}; NuPlrCy;  
qF4tjza;k  
private static Sort[] impl=new Sort[]{ cz,QP'g  
new InsertSort(), ,|d9lK`"P  
new BubbleSort(), 4VZI]3K,  
new SelectionSort(), ;YR /7  
new ShellSort(), 4/|x^Ky>G  
new QuickSort(), Dc@O Mr  
new ImprovedQuickSort(), gy%.+!4>v`  
new MergeSort(),  u&#>)h  
new ImprovedMergeSort(), jQ;/=9  
new HeapSort() &muBSQ-  
}; `v!. ,Yr  
( ne[a2%>  
public static String toString(int algorithm){ w.w{L=p:<"  
return name[algorithm-1]; 7H)$NG<U$  
} S?d<P  
TdgK.g 4  
public static void sort(int[] data, int algorithm) { UP^8Yhdo  
impl[algorithm-1].sort(data); TL2E|@k1]  
} jcJ 4?  
8j;Un]  
public static interface Sort { @KK6JyOTQ  
public void sort(int[] data); -DdHl8  
} .p! DVQ"a  
O3@DU#N&s  
public static void swap(int[] data, int i, int j) { EjLq&QR.  
int temp = data; [(@K;6o  
data = data[j]; It[51NMal  
data[j] = temp; /IWA U)A0  
} i"}z9Ae~.  
} 7. <jdp  
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