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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。 .!yq@Q|=u  
插入排序: >S'>!w  
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package org.rut.util.algorithm.support; %K zbO0  
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import org.rut.util.algorithm.SortUtil; rz.IoQo  
/** 3]^'  
* @author treeroot <Oa9oM},d  
* @since 2006-2-2 Nd!c2`  
* @version 1.0 r?^"6 5 =  
*/ 2r;GcjezH  
public class InsertSort implements SortUtil.Sort{ 6vobta^w  
\Yq0 zVol  
/* (non-Javadoc) "0-y*1/m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lR@& Z6lw  
*/ W 2<3C  
public void sort(int[] data) { K/|  
int temp; .&iN(Bd  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A"4@L*QV  
} 3ji:O T  
} <KLg0L<W  
} ^f|<R8`  
-~O/NX  
} o/1JO_41  
RZh}:  
冒泡排序: X+iK<F$  
!M(:U,?B  
package org.rut.util.algorithm.support; 0`n 5x0R  
8=F%+  
import org.rut.util.algorithm.SortUtil; jDTUXwx7V  
SF< [FM%1  
/** "PzP; Br  
* @author treeroot DA=1KaJ.  
* @since 2006-2-2 B< hEx@  
* @version 1.0 gxmc|  
*/ oZ:{@ =  
public class BubbleSort implements SortUtil.Sort{ =}R~0|^  
m}5q]N";x  
/* (non-Javadoc) \_VmY!I5\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .zS D`v@[  
*/ nxQ}&n  
public void sort(int[] data) { s$GF 95^  
int temp; ET-Vm >]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _- %d9@x  
if(data[j] SortUtil.swap(data,j,j-1); M|r8KW~S)  
} i03gX<=*  
} t`u!]DHv  
} 7'OPjt M  
} H$tb;:  
5v9uHxy  
} S}7>RHe  
4ht\&2&:  
选择排序: uyT/Xzo3  
Rp/-Pv   
package org.rut.util.algorithm.support; -H\,2FO  
O2v.  
import org.rut.util.algorithm.SortUtil; FH*RU1Z  
]XUSqai  
/** l1<?ONB.#  
* @author treeroot GwQn;gkF  
* @since 2006-2-2 $]*d#`Sy{%  
* @version 1.0 ~/|zlu*jpc  
*/ _tj&Psp  
public class SelectionSort implements SortUtil.Sort { gs`> C(  
*]x_,:R6Ow  
/* a)S7}0|R  
* (non-Javadoc)  O<GF>  
* O >FO>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Km*<Kfcz  
*/ lIh[|]  
public void sort(int[] data) { ]y LhJ_^  
int temp; 9=$ !gC)  
for (int i = 0; i < data.length; i++) { bk3Unreh  
int lowIndex = i; )N7n,_#T>  
for (int j = data.length - 1; j > i; j--) { l~1AT%  
if (data[j] < data[lowIndex]) { KzVTkDn,  
lowIndex = j; /6U 4S>'(  
} XDYosC:  
} a)9rs\Is{  
SortUtil.swap(data,i,lowIndex); 16$y`~c-z  
} &p"(-  
} 3hS6j S  
l h/&__  
} M<[ ?g5=#  
CgnXr/!L  
Shell排序: VXIQw' Cq  
XP;x@I#l  
package org.rut.util.algorithm.support; ~>%DKJe  
Zq*eX\#C  
import org.rut.util.algorithm.SortUtil; uA\J0"0; }  
aws"3O% uW  
/** Z;b+>2oL  
* @author treeroot A}G|Yfn  
* @since 2006-2-2 E*|tOj9`1n  
* @version 1.0 Q)^g3J  
*/ Z@J.1SaB  
public class ShellSort implements SortUtil.Sort{ 5 =Z!hQ}  
Uix{"  
/* (non-Javadoc) tt4+m>/T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #D)x}#V\  
*/ }.{}A(^YR  
public void sort(int[] data) { iV hJH4  
for(int i=data.length/2;i>2;i/=2){ .Z%G@X*  
for(int j=0;j insertSort(data,j,i); o6|-=FcvC  
} 0H:dv:#WAI  
} f=I:DkR  
insertSort(data,0,1); R]Qp Mj%o  
} C5n?0I9  
',mW`ZN  
/** S()Za@ [a$  
* @param data s[c^"@HT  
* @param j )+Y&4Qu  
* @param i hI~SAd ,#A  
*/ 7ZFJexN]  
private void insertSort(int[] data, int start, int inc) { o4)hxs  
int temp; TnE+[.Qu  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &KqVN]1+^  
} ^M|K;jt>  
} oJY[{-qW  
} 6^YJ]w  
& _K*kI:  
} X~RH^VYv  
z\.1>/Z=  
快速排序: nyhMnp#<  
zWIeHIt  
package org.rut.util.algorithm.support; "=|t~`  
?_ RYqolz  
import org.rut.util.algorithm.SortUtil; xb$yu.c  
yFM>T\@  
/** OVswt  
* @author treeroot dZ2`{@AYY  
* @since 2006-2-2 8$}OS-  
* @version 1.0 Oif,|:  
*/ # *,sa  
public class QuickSort implements SortUtil.Sort{ :oa9#c`L  
(5`T+pAsV  
/* (non-Javadoc) N z~" vi(t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `WlE| G[  
*/ /f3m)pT  
public void sort(int[] data) { kx{!b3"  
quickSort(data,0,data.length-1); q)iTn)Z!  
} X?df cS*!n  
private void quickSort(int[] data,int i,int j){ |}S1o0v{(a  
int pivotIndex=(i+j)/2; R^8B3-aA`  
file://swap ^ KH>1!  
SortUtil.swap(data,pivotIndex,j); DQgH_!  
h<3p8eB  
int k=partition(data,i-1,j,data[j]); P s#>y&  
SortUtil.swap(data,k,j); kO ![X^V  
if((k-i)>1) quickSort(data,i,k-1); Y60"M4j  
if((j-k)>1) quickSort(data,k+1,j); . U/k<v<)6  
G5c7:iGm/c  
} ~_PYNY`"  
/** QIAR  
* @param data D ,M@8 h,  
* @param i 5py R ~+  
* @param j KQ)T(mIqp  
* @return 8(A{;9^g  
*/ u O'/|[`8  
private int partition(int[] data, int l, int r,int pivot) { ,sDr9h/'C3  
do{ ?q Xs-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l3J$md|f  
SortUtil.swap(data,l,r); ;~/4d-  
} JR1 *|u  
while(l SortUtil.swap(data,l,r); H/jm f5  
return l; l{%a&/  
} Y';>O`  
wkikD  
} <t}?$1  
u!1/B4!'O  
改进后的快速排序: B8~= RmWLl  
(@Zcx9  
package org.rut.util.algorithm.support; _01Px a2.  
A3s57.Z]|  
import org.rut.util.algorithm.SortUtil; /77z\[CeYH  
|Fv?6qw+  
/** 2k+16/T  
* @author treeroot -e*BqH2t  
* @since 2006-2-2 v2J0u:#,  
* @version 1.0 `-O= >U5nH  
*/ 2R`u[  
public class ImprovedQuickSort implements SortUtil.Sort { ?,% TU&Yn  
zilaP)5x6  
private static int MAX_STACK_SIZE=4096; 4}-#mBV]/  
private static int THRESHOLD=10; wj%wp[KA$  
/* (non-Javadoc) j=j+Nf$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9#@Zz4Ww  
*/ IVteF*8hU  
public void sort(int[] data) { ,F: =(21  
int[] stack=new int[MAX_STACK_SIZE]; (~#G'Hd  
}1m_o@{3P  
int top=-1; 7a<_BJXx  
int pivot; xNgt[fLpS  
int pivotIndex,l,r; n`<U"$*  
(,LL[&;:  
stack[++top]=0; 'F5)ACA%  
stack[++top]=data.length-1;  :]c=pH  
F<r4CHfh;  
while(top>0){ ;r!\-]5$  
int j=stack[top--]; 0w3b~RJ  
int i=stack[top--]; ]{Ek[Av  
xIgql}.  
pivotIndex=(i+j)/2; c]v +  
pivot=data[pivotIndex]; Taasi` k  
Mi74Xl i  
SortUtil.swap(data,pivotIndex,j); QymD-A"P  
O71BM@2<  
file://partition 0j$OE  
l=i-1; hW%p#g;  
r=j; FpzP #;  
do{ `Bu9Nq  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); D5` (}  
SortUtil.swap(data,l,r); b1=pO]3u  
} S=O$JP79  
while(l SortUtil.swap(data,l,r); @L;C_GEa  
SortUtil.swap(data,l,j); XS|mKuMc C  
v3^t/[e~:  
if((l-i)>THRESHOLD){ H[BYE  
stack[++top]=i; "Ot{^ _e  
stack[++top]=l-1; MPvWCPB  
} qGa<@ b  
if((j-l)>THRESHOLD){ KjYDFrR4  
stack[++top]=l+1; ,?y7 ,nb  
stack[++top]=j; }vD;DSz:  
} GP]TnQ<*;  
o+^Eu}[.  
} vYzVY\   
file://new InsertSort().sort(data); `M rBav  
insertSort(data); ;+%Z@b%  
} if@,vc  
/**  /q*KO\L  
* @param data ':sTd^V  
*/ {8:o?LnMW  
private void insertSort(int[] data) { ^&m?qKN8  
int temp; .e$%[ )D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rIlBH*aT  
} 5_aw. s>  
} u]*5Ex(?  
} ysVi3eq  
%MuaW(I o  
} oCA(FQ6  
>0V0i%inmF  
归并排序: !a[$)c  
w\DspF  
package org.rut.util.algorithm.support; \G3!TwC%  
[B,p,Q"  
import org.rut.util.algorithm.SortUtil; 2 `&<bt[g  
dXO=ZU/N  
/** f".q9{+p,  
* @author treeroot ue9h   
* @since 2006-2-2 J)huy\>,  
* @version 1.0 qUg9$oh{LI  
*/ v= 8VvT 8  
public class MergeSort implements SortUtil.Sort{ 6ZEdihBei  
6eo4#/+%  
/* (non-Javadoc) H:Lt$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r=0j7^B#  
*/ ,D8&q?a  
public void sort(int[] data) { GLcd9|H  
int[] temp=new int[data.length]; e>!E=J)j  
mergeSort(data,temp,0,data.length-1); w"6aha*%7  
} l $w/Fz  
yM|g|;U  
private void mergeSort(int[] data,int[] temp,int l,int r){ qmID-t"  
int mid=(l+r)/2; s7M}NA 0  
if(l==r) return ; ^$}/|d(  
mergeSort(data,temp,l,mid); Gc^t%Ue-H)  
mergeSort(data,temp,mid+1,r); G1p'p&x.  
for(int i=l;i<=r;i++){ qp@m&GH  
temp=data; EW9b*r7./  
} g? I!OG  
int i1=l; ?OO%5PSen  
int i2=mid+1; ^Po,(iIn  
for(int cur=l;cur<=r;cur++){ )-#i8?y3C  
if(i1==mid+1) `:gYXeR  
data[cur]=temp[i2++]; yU!GS-  
else if(i2>r) {\Ys@FF  
data[cur]=temp[i1++]; @E(P9zQ/zy  
else if(temp[i1] data[cur]=temp[i1++]; V" }*"P-%  
else 6lZGcRO  
data[cur]=temp[i2++]; WP!il(Gr  
}  z \^  
} Se/ss!If  
N-Z^G<[q.  
} `fMpV8vv  
_G[6+g5|  
改进后的归并排序:  `~h0?g  
GVZTDrC  
package org.rut.util.algorithm.support; + "zYn!0  
j"0rkN3$J  
import org.rut.util.algorithm.SortUtil; ?cJA^W  
F~'sT}A*  
/** l{QC}{Ejc2  
* @author treeroot SlN"(nq  
* @since 2006-2-2 ,@479ZvvR3  
* @version 1.0 &~}@u[=ux  
*/ vgN@~Xa  
public class ImprovedMergeSort implements SortUtil.Sort { fOLnK y#  
W W35&mI)k  
private static final int THRESHOLD = 10; F#KF6)P  
}Q ;BQ2[  
/* G}q<{<+$  
* (non-Javadoc) q55M8B 4w  
* \eT/%$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3wo'jOb  
*/ c`pYc  
public void sort(int[] data) { Cg7)S[zl  
int[] temp=new int[data.length]; c~37 +^B:  
mergeSort(data,temp,0,data.length-1); B/rzh? b  
} w#rVSSXQ3  
d96fjj~  
private void mergeSort(int[] data, int[] temp, int l, int r) { $-e=tWkgv  
int i, j, k; ~9bv Wd1D  
int mid = (l + r) / 2; 2=O ))^8  
if (l == r) {F/q{c~]  
return; E;$$+rA  
if ((mid - l) >= THRESHOLD) ]y}Zi/zh  
mergeSort(data, temp, l, mid); :k\} I k  
else <oQ6ZX  
insertSort(data, l, mid - l + 1); !x6IV25  
if ((r - mid) > THRESHOLD) `}Eh[EOHJ  
mergeSort(data, temp, mid + 1, r); lj Y  
else # 'wL\3  
insertSort(data, mid + 1, r - mid); @H6%G>K,  
m $)YYpX  
for (i = l; i <= mid; i++) { 1NW>wo  
temp = data; T"IW Jpc  
} 88#N~j~P  
for (j = 1; j <= r - mid; j++) { B9AbKK$`  
temp[r - j + 1] = data[j + mid]; b70AJe=  
} vLr&ay!w  
int a = temp[l]; {x|MA(NO  
int b = temp[r]; 8'n#O>V@  
for (i = l, j = r, k = l; k <= r; k++) { HMhLTl{;  
if (a < b) { !@A|L#*  
data[k] = temp[i++]; ps "9;4P  
a = temp; Vl-D<M+i h  
} else { ig+k[`W  
data[k] = temp[j--]; 2G H)iUmc  
b = temp[j]; :)j7U3u  
} |K6nOX!i  
} qR_SQ VN  
} &hO$4qtN  
0:jsV|5B8  
/** fG3wc l~  
* @param data PMQb\%iE"  
* @param l G%Y*q(VrEu  
* @param i \_?yzgf  
*/ =#jTo|~u4o  
private void insertSort(int[] data, int start, int len) { [+_\z',u  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); i:;$oT  
} a!&bc8J7  
} ?~{r f:Y  
} I{Rz,D uAL  
} w8O hJv  
FX cc1X/  
堆排序: ta@ ISRK  
wQ@Zw bx  
package org.rut.util.algorithm.support; &:-GI)[o  
C"(_mW{@  
import org.rut.util.algorithm.SortUtil;  I.UjST  
C"k2<IE  
/** ~ 0av3G  
* @author treeroot 8 qn{  
* @since 2006-2-2 g~eJ YS,  
* @version 1.0 %s]U@Ku(a  
*/ dP?nP(l  
public class HeapSort implements SortUtil.Sort{ nMLU-C!t  
Sb^add0dT  
/* (non-Javadoc) {n pOlV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hZ%2?v`  
*/ JATS6-Lz`  
public void sort(int[] data) { .V7Y2!4TE  
MaxHeap h=new MaxHeap(); <1TlW ~q<  
h.init(data); !,I7 ?O  
for(int i=0;i h.remove(); u<x[5xH+  
System.arraycopy(h.queue,1,data,0,data.length); j )<;g(  
} b!0'Qidh0  
}#1U D  
private static class MaxHeap{ er#8D6*  
kx:c*3q.k  
void init(int[] data){ "4KkKi  
this.queue=new int[data.length+1]; X >3iYDe  
for(int i=0;i queue[++size]=data; Cm99?K  
fixUp(size); l# }As.o}  
} cAYa=}~<  
} ;OQ#@|D  
)Uc$t${en  
private int size=0; !."Izz/  
]r"31.w(  
private int[] queue; CX1L(Y[  
.i1jFwOd|G  
public int get() { b0!*mrF]6  
return queue[1]; lO%MyP  
} s@/B*r9  
pK-_R#  
public void remove() { wgC??Be;ut  
SortUtil.swap(queue,1,size--); lpIteZw:  
fixDown(1); `i"$*4#<  
} #FrwfJOV  
file://fixdown C3&17O6  
private void fixDown(int k) { "bv,I-\  
int j; x8\E~6`,  
while ((j = k << 1) <= size) { d/"gq}NT  
if (j < size %26amp;%26amp; queue[j] j++; R>Z,TQU  
if (queue[k]>queue[j]) file://不用交换 SD)5?{6<  
break; aS c#&{  
SortUtil.swap(queue,j,k); A@9U;8k  
k = j; 6 ,7/8  
} ?j &V:kF  
} %i;r]z-  
private void fixUp(int k) { {JCSR2BB  
while (k > 1) { v!WU |=u  
int j = k >> 1; M!;`(_2  
if (queue[j]>queue[k]) W;xW: -  
break; SS l8  
SortUtil.swap(queue,j,k);  ]2hF!{wc  
k = j; RTdD]pE8Q  
} ]#vvlM>/  
} :DS2zA  
R[mH35D/  
} }CB=c]p  
MAm1w'ol"  
} T%M1[<"Q  
C:|q'"F  
SortUtil: j1'xp`jgv  
z*??YUT\M  
package org.rut.util.algorithm; X ,V= od>  
GC5#1+fQ  
import org.rut.util.algorithm.support.BubbleSort; U89]?^|bb  
import org.rut.util.algorithm.support.HeapSort; :F!dTD$  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8:3oH!n  
import org.rut.util.algorithm.support.ImprovedQuickSort; YyQf  
import org.rut.util.algorithm.support.InsertSort; BN<#x@m$]  
import org.rut.util.algorithm.support.MergeSort; V0SW 5 m  
import org.rut.util.algorithm.support.QuickSort; =)"NE>  
import org.rut.util.algorithm.support.SelectionSort; 8GF[)z&|P:  
import org.rut.util.algorithm.support.ShellSort; N"q+UCRC  
UUdu;3E=5  
/** )A>U<n$h  
* @author treeroot Zi[{\7a  
* @since 2006-2-2 wiK@o$S-  
* @version 1.0 SK2J`*  
*/ F^%{ ;  
public class SortUtil { w@ gl  
public final static int INSERT = 1; `? 9] '  
public final static int BUBBLE = 2; Z9 ;nC zHm  
public final static int SELECTION = 3; qd#(`%_/  
public final static int SHELL = 4; zm;*:]S  
public final static int QUICK = 5; s +y'<88  
public final static int IMPROVED_QUICK = 6; ne !j%9Ar  
public final static int MERGE = 7; YW4b m  
public final static int IMPROVED_MERGE = 8;  1pYmtr  
public final static int HEAP = 9; 0`g}(}'L  
T@d_ t  
public static void sort(int[] data) { 4 _c:Vl  
sort(data, IMPROVED_QUICK); Se;?j-  
} e"v[)b++Y  
private static String[] name={ 5'{qEZs^QU  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :*F3  
}; Pp JE|[]  
V,|Bzcz  
private static Sort[] impl=new Sort[]{ \>aa8LOe  
new InsertSort(), ^2Fs)19R  
new BubbleSort(), &<fRej]v  
new SelectionSort(), !~w6"%2+7  
new ShellSort(), ?@g;[310`  
new QuickSort(), PJSDY1T  
new ImprovedQuickSort(), QYf/tQg$  
new MergeSort(), Eezlx9b  
new ImprovedMergeSort(), $Z(g=nS>  
new HeapSort() )\I? EU8  
}; Up!ZCZ$RC  
<x>k3bD  
public static String toString(int algorithm){ 5m%baf2_  
return name[algorithm-1]; alb+R$s  
} ]"2 v7)e  
3-_U-:2"  
public static void sort(int[] data, int algorithm) { :xAe<Pq  
impl[algorithm-1].sort(data); Z)6nu)  
} ZB_16&2Ow  
\^;|S  
public static interface Sort { gn[$;*932z  
public void sort(int[] data);  n_xa)  
} <De3mZb  
cciAMQhA  
public static void swap(int[] data, int i, int j) { @3expC  
int temp = data; 5.C[)`_  
data = data[j]; P98X[0&  
data[j] = temp; :y O,  
} ==e#CSJq  
} X,JWLS J  
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