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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。 ETtR*5Y 5  
插入排序: 9I9)5`d|Jn  
Y*6*;0Kx  
package org.rut.util.algorithm.support; eUl[gHP  
S}<(9@]z  
import org.rut.util.algorithm.SortUtil; Oe?nX>  
/** (/^&3xs9  
* @author treeroot {)+/w"^.  
* @since 2006-2-2 *UTk. :G5  
* @version 1.0 x/ez=yd*l  
*/ ;-3M  
public class InsertSort implements SortUtil.Sort{ NJ~'`{3v  
$8s&=OW  
/* (non-Javadoc) +CACs7tV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W{%M+a[#l  
*/ *m;L.r`5[  
public void sort(int[] data) { 8w\&QX  
int temp;  :sf;Fq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `bi5#xR  
} ;,<s'5icyg  
} ,Vogo5~X  
} rkD(K G9E  
4B |f}7%\  
} hk~ s1"  
Tb}b*d3  
冒泡排序: V; ChrmE  
>uVG]  
package org.rut.util.algorithm.support; _|F h^hq  
 z\ \MLyS  
import org.rut.util.algorithm.SortUtil; }\9qN!ol  
rC'97`!K  
/** Dx8^V%b  
* @author treeroot V Bg\)r[  
* @since 2006-2-2 vnKUD|  
* @version 1.0 "Aynt_a.  
*/ <h^vl-L>  
public class BubbleSort implements SortUtil.Sort{ :/u EPki  
5nk]{ G> V  
/* (non-Javadoc) 7{p,<Uz<"U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |'Jz(dv[  
*/ ^JH 4: h  
public void sort(int[] data) { CrK}mbe  
int temp; #zfBNkk&@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Hi )n]OE  
if(data[j] SortUtil.swap(data,j,j-1); QqRL>.)W  
} 7r:!HmRl  
} Wu:evaZ:i  
} |_Vlw&qu+  
} 1B2>8 N  
]@_*O$  
} qg|SBQ?6  
0DGXMO$;  
选择排序: X'O3)Yg  
KZ&{Ya  
package org.rut.util.algorithm.support; F6yMk%  
<5=^s%H  
import org.rut.util.algorithm.SortUtil; e~xN[Q\0]  
xse8fGs  
/** Uh{|@D  
* @author treeroot "1Vuf<?C  
* @since 2006-2-2 ]5wc8Kh"  
* @version 1.0 Oo$i,|$$  
*/ Gq?JMq#  
public class SelectionSort implements SortUtil.Sort { 86oa>#opU  
WS4J a$*  
/* Ean #>h  
* (non-Javadoc) CnN PziB  
*  `i;f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ApR>b%  
*/ T=%,^  
public void sort(int[] data) { TF2'-"2Y  
int temp; ibha`  
for (int i = 0; i < data.length; i++) { s>ilxLSX]  
int lowIndex = i; }Dp/K4  
for (int j = data.length - 1; j > i; j--) { F@UbUm2o  
if (data[j] < data[lowIndex]) { %d3qMnYu  
lowIndex = j; ^O}`i  
} 'a[|'  
} HW"@~-\  
SortUtil.swap(data,i,lowIndex); 0.!_k )tu  
} l]C#bL>i  
} fgdqp8~  
>8PGyc*9  
} j"1#n? 0  
sN"<baZ  
Shell排序: q8#zv_>K  
b@`h]]~:  
package org.rut.util.algorithm.support; it77x3Mm F  
7Ji|x{``  
import org.rut.util.algorithm.SortUtil; 9vZ:oO  
ZW7z[,tk<.  
/** ^ZP $(a4  
* @author treeroot KDxqz$14 -  
* @since 2006-2-2 mBN+c9n/  
* @version 1.0 UB^OMB-W.m  
*/ l$/.B=]  
public class ShellSort implements SortUtil.Sort{ #83`T&Xw*  
17la/7l<  
/* (non-Javadoc) ^pwT8Bp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ui|z#{8&  
*/ 6--t6>5  
public void sort(int[] data) { G{CKb{  
for(int i=data.length/2;i>2;i/=2){ z;iNfs0i$  
for(int j=0;j insertSort(data,j,i); P_}wjz}9ZX  
} uo`zAKM&A  
} x4bmV@b  
insertSort(data,0,1); n,D&pl9f  
} #fy3 i+  
)5Wt(p:T6_  
/** 7D&O5Z=%+  
* @param data };Pdn7;1G:  
* @param j ZSvU1T8  
* @param i <c3Te$.  
*/ 2Y>#FEW/  
private void insertSort(int[] data, int start, int inc) { B_mT[)ut  
int temp; |W*#N8I P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7?ICXhu9  
} d0V*[{  
} G ,e!!J  
} 'pj*6t1~  
YJGP8  
} >=1Aa,_tc  
S ^]mF>xX8  
快速排序: $+|. @ss  
Cz|F%>y#  
package org.rut.util.algorithm.support; H S)$|m_  
~^bf1W[  
import org.rut.util.algorithm.SortUtil; Fe1XczB  
 qC6@  
/** f|6 Y  
* @author treeroot m<sCRWa-  
* @since 2006-2-2 {X 5G  
* @version 1.0  oP~%7Jt  
*/ H1c>3c  
public class QuickSort implements SortUtil.Sort{ osn ,kD*  
+,]_TxL|C  
/* (non-Javadoc) Q[Gs%/>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1}R\L"  
*/ VpX*l3  
public void sort(int[] data) { vddl9"V)  
quickSort(data,0,data.length-1); ;#L]7ZY9:-  
} !t[;~`d9  
private void quickSort(int[] data,int i,int j){ !5 ?<QKOe  
int pivotIndex=(i+j)/2; 4C[kj  
file://swap + B<7]\\M  
SortUtil.swap(data,pivotIndex,j); (%'`t(<  
[0D.+("EW  
int k=partition(data,i-1,j,data[j]); [e>2HIS,  
SortUtil.swap(data,k,j); 9* P-k.Bl  
if((k-i)>1) quickSort(data,i,k-1); #y'p4Xf  
if((j-k)>1) quickSort(data,k+1,j); $F1Am%  
=zR9^k  
} ydMhb367|  
/** ^fV-m&F)K*  
* @param data Y4+iNdd  
* @param i #r,!-;^'p  
* @param j g'Wr+( A_  
* @return LVy`U07CV  
*/ e~SRGyIww  
private int partition(int[] data, int l, int r,int pivot) { H vHy{S4  
do{ *TrpW?]Y&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WD5jO9Oai  
SortUtil.swap(data,l,r); ^9]g5.z:  
} QRx9;!~b}  
while(l SortUtil.swap(data,l,r); :;;k+Sw3  
return l; :Dfl,=S  
} C)~%(< D  
K+d{R=s^  
} vsPIvW!V  
l GJN;G7  
改进后的快速排序: ~i.rk#{?D  
8g=];@z  
package org.rut.util.algorithm.support; vs>Pd |p;  
w]fVELU  
import org.rut.util.algorithm.SortUtil; pU<GI@gU  
GPx+]Jw8\  
/** 3BAQ2S}  
* @author treeroot *\_>=sS x;  
* @since 2006-2-2 }rnu:7  
* @version 1.0 ^Nt^.xi7  
*/ L8oqlq( 9  
public class ImprovedQuickSort implements SortUtil.Sort { ^F- 2tc  
\9~Q+~@{G  
private static int MAX_STACK_SIZE=4096; b!`6s  
private static int THRESHOLD=10; O_ vH w^  
/* (non-Javadoc) 3#aLCpVla  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JxKd  
*/ 4sfq,shRq  
public void sort(int[] data) { 5k?xBk=<  
int[] stack=new int[MAX_STACK_SIZE]; 9?^0pR p  
1(Z+n,Hh  
int top=-1; sLzZ}u?(  
int pivot; [q/eRIS_  
int pivotIndex,l,r; ,zdK%V}  
/7ShE-.5#  
stack[++top]=0; xZ* B}O{{H  
stack[++top]=data.length-1; :GFK |  
?T,a(m<i {  
while(top>0){ x_<,GE@  
int j=stack[top--]; o=PW)37>  
int i=stack[top--]; 3Vk\iJ  
crx%;R   
pivotIndex=(i+j)/2; [h>A<O  
pivot=data[pivotIndex]; vst;G-ys  
 Y=H_U$  
SortUtil.swap(data,pivotIndex,j); m 0Uu2Z4  
m63>P4h?  
file://partition ezhfKt]j  
l=i-1; `=kiqF2P}  
r=j; PG @C5Rnu  
do{ n\$.6 _@x  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fP- =wd  
SortUtil.swap(data,l,r); #iRd2Qj%  
} :H]MMe  
while(l SortUtil.swap(data,l,r); -zZb]8\E  
SortUtil.swap(data,l,j); QHsJo|.  
0LTsWCUQ6e  
if((l-i)>THRESHOLD){ A'D2uV  
stack[++top]=i; Tt_QAIl  
stack[++top]=l-1; !<F5W <V  
} +x?8\  
if((j-l)>THRESHOLD){ Yf1%7+V35  
stack[++top]=l+1; f:AfMf>m  
stack[++top]=j; dIA1\;@  
} {@'#|]4y.  
J:IAs:e`  
} [Kb)Q{=)  
file://new InsertSort().sort(data); 1M?Sl?+j  
insertSort(data); \ >#y*W<  
} Y~I0\8s-  
/** *8/cd0  
* @param data z)R\WFBW  
*/ :>jzL8  
private void insertSort(int[] data) { M?DXCsZ,)s  
int temp; fAR 6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);   [ L  
} {>Qs+]  
} qy-Hv6oof  
} yATXN>]l  
\}gITc).j  
} @[5]?8\o  
H.O&seY  
归并排序: bV*q~ @xh  
&}0#(Fa`  
package org.rut.util.algorithm.support; J$(79gH{  
JaN53,&<  
import org.rut.util.algorithm.SortUtil; )-i(%;,*e  
|KSoS#Y  
/** Wa iM\h?=#  
* @author treeroot /vqsp0e"H  
* @since 2006-2-2 p(yHB([8  
* @version 1.0 B^j(Fq  
*/ hgdr\ F  
public class MergeSort implements SortUtil.Sort{ .0dx@Sbv  
tU-jtJ  
/* (non-Javadoc) zbDK$g6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hc\oR(L  
*/ P_E xh]P  
public void sort(int[] data) { ]/Cu,mX  
int[] temp=new int[data.length]; {dvsZJj  
mergeSort(data,temp,0,data.length-1); sb%l N   
} W"s)s  
UFj/Y;  
private void mergeSort(int[] data,int[] temp,int l,int r){ |3gWH4M4**  
int mid=(l+r)/2; ASr3P5/  
if(l==r) return ; ?T>NvKF  
mergeSort(data,temp,l,mid); ^E3 HY@j  
mergeSort(data,temp,mid+1,r); "I3&a1*  
for(int i=l;i<=r;i++){ /$UWTq/C7  
temp=data; (=tu~ ^  
} 9}11>X  
int i1=l; deutY.7g  
int i2=mid+1; DjiWg(X  
for(int cur=l;cur<=r;cur++){ LhKUZX,P8  
if(i1==mid+1) q/3co86c  
data[cur]=temp[i2++]; lp5 b&I_  
else if(i2>r) u6/;=]0   
data[cur]=temp[i1++]; z2SR/[I?  
else if(temp[i1] data[cur]=temp[i1++]; liTAV9<  
else ?$4CgN-  
data[cur]=temp[i2++]; ,>I_2mc  
} SqT+rvTh  
} L%f$ &  
''CowI  
} `R o>?H  
{ALOs^_-  
改进后的归并排序: [Mlmn$it  
\LDcIK=  
package org.rut.util.algorithm.support; zfUkHL6  
SSr2K  
import org.rut.util.algorithm.SortUtil; &3Mps[u:h  
l78 :.  
/** Wr.~Ns <  
* @author treeroot [,mcvO;  
* @since 2006-2-2 ,CnUQx0  
* @version 1.0 S3YAc4  
*/ KnYHjJa  
public class ImprovedMergeSort implements SortUtil.Sort { 9!Vp-bo  
%(kf#[zQ  
private static final int THRESHOLD = 10; +F6R@@rWr  
0"=}d y  
/* QEl~uhc3  
* (non-Javadoc) H3q L&xL  
* :,=Z)e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) & /lmg!6  
*/ /M~rmIks  
public void sort(int[] data) { p2o6 6t  
int[] temp=new int[data.length]; D{s4Bo-  
mergeSort(data,temp,0,data.length-1); 3S1`av(tD  
} +4Lj}8,  
*wJ'Z4_5F  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2N_9S?a3sK  
int i, j, k; |} K7Q  
int mid = (l + r) / 2; `H\NJ,  
if (l == r) \fD[Ej  
return; r#K"d  
if ((mid - l) >= THRESHOLD) 58_aI?~>>  
mergeSort(data, temp, l, mid); ki|w?0s  
else 7)a u#K6  
insertSort(data, l, mid - l + 1); BGVy \F<  
if ((r - mid) > THRESHOLD) iMOf];O)  
mergeSort(data, temp, mid + 1, r); TZk.h8  
else lpeo^Y}N  
insertSort(data, mid + 1, r - mid); >.#tNFAs  
CI,xp  
for (i = l; i <= mid; i++) { Q*AgFF%wn  
temp = data; T 9?!.o  
} VEg/x z4c  
for (j = 1; j <= r - mid; j++) { @5(HRd  
temp[r - j + 1] = data[j + mid]; 78<QNl Kn  
} &0S/]E`_M  
int a = temp[l]; -qRO}EF  
int b = temp[r]; ;:pd/\<  
for (i = l, j = r, k = l; k <= r; k++) { ;={Z Bx  
if (a < b) { WWYG>C[  
data[k] = temp[i++]; 9<I;9.1S?^  
a = temp; _7w2E   
} else { yj{:%Km:`  
data[k] = temp[j--]; 9 8eS f  
b = temp[j]; MHKB:t]hA  
} Gu9x4p  
} )d-{#  
} -2Azpeh  
gedk  
/** %epK-q9[  
* @param data ZI#Xh5  
* @param l dbLxm!;(  
* @param i I Ux svW+  
*/ b(H) 8#C  
private void insertSort(int[] data, int start, int len) { q! U'DDEP  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7?JcB?G4  
} }D eW2Jp  
} j>OB<4?.+  
} /I&b5Vp  
} =Z(#j5TGvH  
iP~dH/B|v  
堆排序: 15FGlO<<  
7'xds  
package org.rut.util.algorithm.support; ,W/D0  
>xE{& ):  
import org.rut.util.algorithm.SortUtil; /1q] D8  
mD p|EXN  
/** Z;JZ<vEt92  
* @author treeroot 9#@CmiIhy  
* @since 2006-2-2 vXM``|  
* @version 1.0 3M&75OE  
*/ L&nGjC+Lr  
public class HeapSort implements SortUtil.Sort{ >, }m=X8  
K06/ D!RD4  
/* (non-Javadoc) yw;!KUKb|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ".SQ*'Oc  
*/ 6Pa jBEF  
public void sort(int[] data) { QP e}rQnm  
MaxHeap h=new MaxHeap(); \;A\ vQ[  
h.init(data); D0&{iZ(  
for(int i=0;i h.remove(); z[wk-a+w  
System.arraycopy(h.queue,1,data,0,data.length); ai ,Mez  
} ]jzINaMav  
$0zH2W  
private static class MaxHeap{ gZs8BKO  
(7rG~d1iS  
void init(int[] data){ lFY;O !Y5\  
this.queue=new int[data.length+1]; f V.(v&  
for(int i=0;i queue[++size]=data; wFaWLC|&  
fixUp(size); N7xkkAS{  
} J ZQ$*K  
} ^OQ#Nz  
Do|`wpR  
private int size=0; 8Q1){M9 '  
:8aIj_qds  
private int[] queue; K9*#H(  
.W&rcqy  
public int get() { <ZNa`  
return queue[1]; m H'jr$ ?  
} STmCj  
+:[dviyPt  
public void remove() { ca_8S8lv  
SortUtil.swap(queue,1,size--); UmU=3et<Wj  
fixDown(1); y*6r&989  
} :LFw J  
file://fixdown |C S[>0mV!  
private void fixDown(int k) { <u"#Jw/VP  
int j; yREO;m|o  
while ((j = k << 1) <= size) { n6nwda  
if (j < size %26amp;%26amp; queue[j] j++; c"J(? 1O  
if (queue[k]>queue[j]) file://不用交换 %;PPu$8K9  
break; b`K~l'8  
SortUtil.swap(queue,j,k); T+2I:W%  
k = j; RS/%uxS?  
} Nu{RF  
} f|FQd3o)  
private void fixUp(int k) { _wf"E(c3D  
while (k > 1) { 9bXU!l[  
int j = k >> 1; }~-)31e'`  
if (queue[j]>queue[k])  \'"q6y  
break; -zz9k=q  
SortUtil.swap(queue,j,k); ][bz5aV  
k = j; _ #l b\  
} );;UNO21+  
} j &Ayk*  
i4!n Oyk  
} (s{%XB:K  
Af0E_  
} -ij1%#tz  
J\   
SortUtil: Ye!=  
K"b vUH  
package org.rut.util.algorithm; Hv0sl+  
p9_45u`u2  
import org.rut.util.algorithm.support.BubbleSort; A Sy7")5  
import org.rut.util.algorithm.support.HeapSort; zAB-kE\ )  
import org.rut.util.algorithm.support.ImprovedMergeSort; [;5HI'px  
import org.rut.util.algorithm.support.ImprovedQuickSort; qg6Hk:^r  
import org.rut.util.algorithm.support.InsertSort; 7!JoP ?!  
import org.rut.util.algorithm.support.MergeSort; h2aJa@;S  
import org.rut.util.algorithm.support.QuickSort; Ok({Al1A,w  
import org.rut.util.algorithm.support.SelectionSort; 60AX2-sdJ,  
import org.rut.util.algorithm.support.ShellSort; ~rY<y%K  
wQnr*kyza  
/** K{>O. 5  
* @author treeroot ^"+cJ)  
* @since 2006-2-2 AD?^.<  
* @version 1.0 dGh<R|U3  
*/ 5'V'~Q%  
public class SortUtil { r?/>t1Z  
public final static int INSERT = 1; HNjkRl)QR  
public final static int BUBBLE = 2; 2 >xV&  
public final static int SELECTION = 3; TJsT .DWW~  
public final static int SHELL = 4; 9f,HjRP  
public final static int QUICK = 5; E4y"$U%.  
public final static int IMPROVED_QUICK = 6; ! 2Y, a  
public final static int MERGE = 7; l/rhA6kEU  
public final static int IMPROVED_MERGE = 8; gYzKUX@  
public final static int HEAP = 9; 9fl !CG  
{Y'_QW1:2  
public static void sort(int[] data) { YN>#zr+~  
sort(data, IMPROVED_QUICK); ?QVD)JI*k  
} /e{Oqhf[n  
private static String[] name={ ( v ~/glf  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z^GriL  
}; A7b7IM[  
)cs y^-qw  
private static Sort[] impl=new Sort[]{ QTn-n)AE  
new InsertSort(), KI>7h.t  
new BubbleSort(), sCRBKCR?  
new SelectionSort(), <U,T*Ql1x  
new ShellSort(), s^KxAw_IV  
new QuickSort(), |+`hSA  
new ImprovedQuickSort(), W+K=M*^D;c  
new MergeSort(), &*)tqQeQf  
new ImprovedMergeSort(), BTd'bD~EA  
new HeapSort() LK:|~UV?  
}; 6gR=e+  
[[ s k  
public static String toString(int algorithm){ Y?%6af+  
return name[algorithm-1]; @MB;Ez v  
} >9u6@  
5E!|-xD  
public static void sort(int[] data, int algorithm) { ^jmnE.8R  
impl[algorithm-1].sort(data); / V {w<  
} 0U/:Tpyr  
*iC t4J  
public static interface Sort {  B-&J]H  
public void sort(int[] data); Cq(Xa-  
} Y6D =tb  
ryn)  
public static void swap(int[] data, int i, int j) { RXWjFv~/  
int temp = data; e&0B4wVAQ  
data = data[j]; zw5~|<  
data[j] = temp; Le3S;SY&  
} Aoo'i  
} W X\%FJ  
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