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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。 0q-lyVZ^X  
插入排序: * BR#^Wt  
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package org.rut.util.algorithm.support; FP=- jf/  
Er j{_i?R?  
import org.rut.util.algorithm.SortUtil; _&V,yp!|  
/** g*YA~J@  
* @author treeroot u$[8Zmgzz  
* @since 2006-2-2 GEf=A.WAfw  
* @version 1.0 v :/!OvLe  
*/ X coPkW  
public class InsertSort implements SortUtil.Sort{ 2!B|w8ar  
_1G/qHf^S  
/* (non-Javadoc) &k}B66  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DAWF =p]  
*/ /Z^a, %1  
public void sort(int[] data) { $G"\@YC<  
int temp; (W:@v&p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cw 2!V@  
} 54>0Dv??H  
} O]=jI  
} 1aRTvaGo  
W& 0R/y7  
} AJ*17w  
SIrNZ^I  
冒泡排序: 7A(4`D J  
0Pf88'6  
package org.rut.util.algorithm.support; p$1 'e,G  
X0P +[.i  
import org.rut.util.algorithm.SortUtil; [iq^'E  
E#rQJ  
/** ,s 3|  
* @author treeroot 6&SNFOX{@  
* @since 2006-2-2 zytN leyc  
* @version 1.0 Q2m[XcnX  
*/ m6BUKX\m  
public class BubbleSort implements SortUtil.Sort{ ~210O5^  
L$OZ]  
/* (non-Javadoc) ^\O*e)#*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y"8@\73(R  
*/ MjC<N[WO>N  
public void sort(int[] data) { _yN5sLLyb  
int temp; $aJay]F  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ZXYyG`3+  
if(data[j] SortUtil.swap(data,j,j-1); a}NB6E)-  
} IL.bwt pQD  
} # 2^H{7  
} ,ESli/6  
} f]%S FQ+  
h?n?3x!(  
} 3R%JmLM+R9  
w(ZZTVW-  
选择排序: R)Mkt8v  
"0;WYw?  
package org.rut.util.algorithm.support; 7:vl -ZW  
X(BxC<!D.  
import org.rut.util.algorithm.SortUtil; r7R'beiH  
z3S"1L7  
/** =h-E N_[  
* @author treeroot |Sjy   
* @since 2006-2-2 !% W5@tN  
* @version 1.0 8ly)G  
*/ K(u pz n*a  
public class SelectionSort implements SortUtil.Sort { us|Hb  
gw,K*ph}q  
/* >^g2 Tg:  
* (non-Javadoc) QEt"T7a[/  
* A8mc+ Bf(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >>KI_$V  
*/ )GG9[%H!  
public void sort(int[] data) { 7 SJ=2  
int temp; 6?M/7 1  
for (int i = 0; i < data.length; i++) { '62_q8:  
int lowIndex = i; =L#&`s@)_  
for (int j = data.length - 1; j > i; j--) { >uYQt ~s  
if (data[j] < data[lowIndex]) { 8493Sw  
lowIndex = j; $)ka1L"N  
} I[K4/91  
} ZXb{-b?[`  
SortUtil.swap(data,i,lowIndex); M 1 m]1<  
} Xv!Gg6v6  
} fWEQ vQ  
M("sekL  
} w#A\(z%;x  
<CO_JWD  
Shell排序: l59\Lo:  
Z9M$*Zp  
package org.rut.util.algorithm.support; )Hin{~h  
>&+V[srfD  
import org.rut.util.algorithm.SortUtil; LBD],Ba!  
Jb*QlsGd  
/** qdpi-*2  
* @author treeroot 3)W_^6>bM  
* @since 2006-2-2 L)U*dY   
* @version 1.0 ER9{D$  
*/ BrSvkce  
public class ShellSort implements SortUtil.Sort{ Q+Q"JU  
$<)]~* *K  
/* (non-Javadoc) Ve"(}z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @hA`f4^  
*/ B$2GEg]Ri  
public void sort(int[] data) { ; ,sNRES3  
for(int i=data.length/2;i>2;i/=2){ m0^ "fMV  
for(int j=0;j insertSort(data,j,i); %(&ja_oO  
} H0"'jd  
} J'ce?_\?PY  
insertSort(data,0,1); (SW6?5  
} <v -YMk@  
y(g]:#  
/** M.y!J  
* @param data Ddq*}Pf0K  
* @param j J2x}@p  
* @param i 9b=0 4aWHm  
*/ , 2#Q >  
private void insertSort(int[] data, int start, int inc) { dO z|CfUhI  
int temp; E]n]_{BN]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,|yscp8  
} T\p>wiY2|F  
} 8k:^( kByF  
} o[KZm17  
:t`W&z41  
} oZ/"^5  
GO2q"a  
快速排序: 1QA/ !2E  
7)<Ib j<M  
package org.rut.util.algorithm.support; *j&\5|^V  
1o\2\B=k{  
import org.rut.util.algorithm.SortUtil; Heh&;c  
`qmwAT  
/** 6 L4\UT r  
* @author treeroot qgl-,3GY%N  
* @since 2006-2-2 !4+Die X  
* @version 1.0 Pf4zjc  
*/ '"7b;%EN'  
public class QuickSort implements SortUtil.Sort{ {:"<E?+  
\PT!mbB?  
/* (non-Javadoc) g)Hsd0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FEu}zt@  
*/ 4rL`||  
public void sort(int[] data) { d m"R0>  
quickSort(data,0,data.length-1); Wf "$  
} )?radg  
private void quickSort(int[] data,int i,int j){ `_)9eGQ  
int pivotIndex=(i+j)/2; wxK71OH  
file://swap )vOBF5  
SortUtil.swap(data,pivotIndex,j); g,WTXRy  
T2]8w1l&K  
int k=partition(data,i-1,j,data[j]); 4.,|vtp  
SortUtil.swap(data,k,j); ^kcuRJ0*$  
if((k-i)>1) quickSort(data,i,k-1); 8i;drvf  
if((j-k)>1) quickSort(data,k+1,j); w)S 4Xi=  
Lct_6?  
} FLQke"6i0:  
/** j}Svb1A  
* @param data m=E/um[D  
* @param i Xlug{ Uh  
* @param j vgtAJp+p*  
* @return rU9")4sQ  
*/ PO'K?hVS^w  
private int partition(int[] data, int l, int r,int pivot) { |*J;X<Vm  
do{ GjW(&p$&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <`Fl Igo  
SortUtil.swap(data,l,r); ?+=,t]`!m  
} p@Os  
while(l SortUtil.swap(data,l,r); R?lTB3"  
return l; l[5** ?#  
} R&t2   
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} u y"i3xD6-  
NMw5ixl  
改进后的快速排序: c %Y *XJ'  
\M.?*p  
package org.rut.util.algorithm.support; 4Yok,<  
dbEXl m  
import org.rut.util.algorithm.SortUtil; -}T7F+  
J| &aqY  
/** -,/6 Wn'j  
* @author treeroot x v$fw>  
* @since 2006-2-2 @(=?x:j  
* @version 1.0  K%%Ow  
*/ I&15[:b=-  
public class ImprovedQuickSort implements SortUtil.Sort { lgVT~v{U`n  
}Tm+gJA  
private static int MAX_STACK_SIZE=4096; +ah4 K(+3  
private static int THRESHOLD=10; dMjQV&  
/* (non-Javadoc) t4;gY298  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ={o4lFe3v(  
*/ KMb'm+  
public void sort(int[] data) { ;dZZOocV1  
int[] stack=new int[MAX_STACK_SIZE]; 7mi=Xa:U  
.XK3o .ZhW  
int top=-1; MTE 1\,  
int pivot; 1=+S'_j  
int pivotIndex,l,r; *dB3Gu{ +  
9b-4BON{P  
stack[++top]=0; %<Qv?`B  
stack[++top]=data.length-1; &=%M("IlD  
;A"i.:ZT  
while(top>0){ q2B'R   
int j=stack[top--]; w H=7pS"s  
int i=stack[top--]; #]i^L;u1A  
jZ5ac=D&I  
pivotIndex=(i+j)/2; obbg# ,  
pivot=data[pivotIndex]; rFC9y o  
:G9d,B7*  
SortUtil.swap(data,pivotIndex,j); dwvc;f-  
vfc5M6Vm)<  
file://partition (mi=I3A(  
l=i-1; `3K."/N6c  
r=j; I YptNR  
do{ UZiL NKc  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <uoVGV5N  
SortUtil.swap(data,l,r); yoq-H+<  
} P&c O2  
while(l SortUtil.swap(data,l,r); vqUYr  
SortUtil.swap(data,l,j); (NnE\2  
hP[/xe  
if((l-i)>THRESHOLD){ x5rm 2C  
stack[++top]=i; j}@LiH'Q  
stack[++top]=l-1; qa: muW  
} Ygfy;G%  
if((j-l)>THRESHOLD){ a&mL Dh/  
stack[++top]=l+1; [UdJ(cGf  
stack[++top]=j; t]3:vp5N]  
} H,/ =<Th;i  
`7`` 1TL  
} _q-k1$ o$  
file://new InsertSort().sort(data); 4yMi9Ri4H  
insertSort(data); 5``usn/&Kj  
} vsA/iH.  
/** Q}lY1LT`  
* @param data %AT/g&M&1#  
*/ z:Ru`  
private void insertSort(int[] data) { N1:)Z`r  
int temp; :=quCzG  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y.52`s6F  
} 8*VQw?{Uee  
} c2gZ<[~  
} .ArOZ{lKD>  
0"sZP\<p  
} 54]UfmT%I  
L)H/t6}i  
归并排序: ^'sy hI\  
{Aj=Rj@  
package org.rut.util.algorithm.support; JGhK8E  
|9m*? 7  
import org.rut.util.algorithm.SortUtil; ]REF1<)4z  
M6Ik'r"M  
/** |D;I>O^"R  
* @author treeroot :9>U+)%  
* @since 2006-2-2 Oeg^%Y   
* @version 1.0 .nA9irc  
*/ PGTjOkx  
public class MergeSort implements SortUtil.Sort{ bI;u};v  
Xa U ^^K  
/* (non-Javadoc) oC!z+<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wUS w 9xg  
*/ }&l%>P  
public void sort(int[] data) { C2hB7?UGN  
int[] temp=new int[data.length]; k1D|Cpnp  
mergeSort(data,temp,0,data.length-1); VB+_ kR6Zv  
} zP!j {y4w  
dHn,;Vv^6  
private void mergeSort(int[] data,int[] temp,int l,int r){ R C!~eJG!  
int mid=(l+r)/2; ]>+ teG:4  
if(l==r) return ; o8A(Cg}  
mergeSort(data,temp,l,mid); xiC.M6/  
mergeSort(data,temp,mid+1,r); u3 4.   
for(int i=l;i<=r;i++){ K[-G2  
temp=data; )4GCL(&  
} QcdAg%"yy  
int i1=l; Jd|E 4h~(  
int i2=mid+1; <5|:QLqy  
for(int cur=l;cur<=r;cur++){ >/-Bg:  
if(i1==mid+1) ,F|49i.K  
data[cur]=temp[i2++]; %:-2P  
else if(i2>r) g`=Z%{z%  
data[cur]=temp[i1++]; M"OCwBT U  
else if(temp[i1] data[cur]=temp[i1++]; ~NK|q5(I  
else 8(:O5#  
data[cur]=temp[i2++]; z_$F)*PL  
} .k5&C/jv  
} S]c&T`jx  
Fy^8]u*Fu  
} f F9=zrW  
Is  ( Ji  
改进后的归并排序: ^"J)^3j<  
:RXzqC  
package org.rut.util.algorithm.support; ?[X^'zz}  
w[;5]z  
import org.rut.util.algorithm.SortUtil; 5.U|CL  
5W_Rg:J{P  
/** pc](  
* @author treeroot `jGG^w3  
* @since 2006-2-2 l4E0/ F  
* @version 1.0 b5%T)hn=  
*/ Z~g7^,-t  
public class ImprovedMergeSort implements SortUtil.Sort { a7fn{VU8  
_$gP-J  
private static final int THRESHOLD = 10; S1*xM  
@$|bMH*1:  
/* [jKhC<t}  
* (non-Javadoc) t "[2^2G  
* F*,RDM'M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @_"Z]Y ,D0  
*/ $?|$uMIafp  
public void sort(int[] data) { ]M&KUgz  
int[] temp=new int[data.length]; >yt8gw0J  
mergeSort(data,temp,0,data.length-1); =?1B|hdo  
} ";w"dfC^  
|#O>DdKHT  
private void mergeSort(int[] data, int[] temp, int l, int r) { ALp|fZ\vp  
int i, j, k; )#025>$z  
int mid = (l + r) / 2; U{&gV~  
if (l == r) TDW\n  
return; v6'k`HnK  
if ((mid - l) >= THRESHOLD) @VKN6yHH  
mergeSort(data, temp, l, mid); B d?{ldg  
else 3TnrPO1E  
insertSort(data, l, mid - l + 1); o;{BI Q1  
if ((r - mid) > THRESHOLD) zHQSx7Ow 5  
mergeSort(data, temp, mid + 1, r); 6tBe,'*  
else /baSAoh/e  
insertSort(data, mid + 1, r - mid); 67P@YL  
/G!M\teeF  
for (i = l; i <= mid; i++) { 39Tlt~Psz  
temp = data; 9h0Y">}`b  
} Au{J/G<W@  
for (j = 1; j <= r - mid; j++) { c[4I> "w  
temp[r - j + 1] = data[j + mid]; E Ks4N4k  
} %2`.*]L  
int a = temp[l];  D ~t  
int b = temp[r]; *~jTE;J  
for (i = l, j = r, k = l; k <= r; k++) { ,uCgC4EP  
if (a < b) { O g!SFg*  
data[k] = temp[i++];  M_f.e!?  
a = temp; @@#h-k%k-  
} else { 6{?B`gm7g  
data[k] = temp[j--]; ]R]%c*tA  
b = temp[j]; oYrg;]H  
} ze#r/j;sw  
} e#|YROHf  
} ECvTmU'=  
uwWKsZ4:ij  
/** \ H!Klp  
* @param data `:YCOF  
* @param l KWi P`h8  
* @param i G Y+li {  
*/ {1J4Q[N9m  
private void insertSort(int[] data, int start, int len) { #b$qtp!,  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5/m}v'S%  
} $VUX?ii$7=  
} %.  W56  
} e4Q2$ Q@b  
} _'Hw` 0}s  
.CBb%onx  
堆排序: s7 3'h  
em?Q4t  
package org.rut.util.algorithm.support; FZ=xy[q]~  
=nE^zY2m%  
import org.rut.util.algorithm.SortUtil; e3]v *<bj  
IOOK[g.?h  
/** T8 >aU  
* @author treeroot rE9Nt9}  
* @since 2006-2-2 S0!w]Ku  
* @version 1.0 \JIyJ8FleC  
*/ U'0e<IcY  
public class HeapSort implements SortUtil.Sort{ ]q3.^F  
$9?<mP2-*  
/* (non-Javadoc) i&\ c DQ 3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nh"U~zlh  
*/ g0:{{w  
public void sort(int[] data) { zx;~sUR;  
MaxHeap h=new MaxHeap(); U,7}VdO  
h.init(data); jUd)|v+t  
for(int i=0;i h.remove(); <^Jdl.G  
System.arraycopy(h.queue,1,data,0,data.length); /G= ?E]^  
} "WzD+<oL  
n|eM}ymF+  
private static class MaxHeap{ Pd;Gc@'~  
0@kL<\u  
void init(int[] data){ CX#d9 8\b  
this.queue=new int[data.length+1]; 7(C:ty9  
for(int i=0;i queue[++size]=data; #X qnH  
fixUp(size); HlraOp+  
} <,,X\>B  
} FPukV^  
F $1f8U8  
private int size=0; kxt/I<cs  
c]R27r E  
private int[] queue;  N}KL'  
t_jnp $1m  
public int get() { Ar'k6NX  
return queue[1]; >1RL5_US  
} '>[Ut@lT;  
arN=OB  
public void remove() { % !Ih=DZ  
SortUtil.swap(queue,1,size--); w[OUGn'  
fixDown(1); KRb'kW  
} sq;3qbz  
file://fixdown Y]bS=*q  
private void fixDown(int k) { > Ft)v  
int j; QM@zy  
while ((j = k << 1) <= size) { 2BV]@]qB  
if (j < size %26amp;%26amp; queue[j] j++; ry0YS\W  
if (queue[k]>queue[j]) file://不用交换 x.Tulo0/  
break; ]D[\l$(  
SortUtil.swap(queue,j,k); T}59m;I  
k = j; "w3%BbIx  
} ]EqwDw4  
} r0*Y~ KHw  
private void fixUp(int k) { ;2[),k  
while (k > 1) { o2!wz8  
int j = k >> 1; 6o4Y]C2W{1  
if (queue[j]>queue[k]) BJKv9x1jK  
break; `\J,%J  
SortUtil.swap(queue,j,k); P~s u]+  
k = j; D.gD4g_O/  
} {%c&T S@s  
} 3!vnSX(iv  
slAR<8  
} ]EdZ,`B4  
B_ bZa  
} &cwN&XBY  
`RXlqj#u  
SortUtil: wlgR = l  
DhXV=Qw  
package org.rut.util.algorithm; UjS+Ddp  
/[E2+g  
import org.rut.util.algorithm.support.BubbleSort; b>Ea_3T/  
import org.rut.util.algorithm.support.HeapSort; OAf}\  
import org.rut.util.algorithm.support.ImprovedMergeSort; IZs&7  
import org.rut.util.algorithm.support.ImprovedQuickSort; J vq)%t8q>  
import org.rut.util.algorithm.support.InsertSort; q7<=1r+  
import org.rut.util.algorithm.support.MergeSort; JJ9R, 8n6  
import org.rut.util.algorithm.support.QuickSort; o pTH6a  
import org.rut.util.algorithm.support.SelectionSort; WjOP2CVv|  
import org.rut.util.algorithm.support.ShellSort; $$i Gs6az  
#n]K$k>  
/** vIf-TQw  
* @author treeroot !,]2.:{0z  
* @since 2006-2-2 c#TV2@   
* @version 1.0 U9jdb9 |  
*/ {.ypZ8JU  
public class SortUtil { (__$YQ-  
public final static int INSERT = 1; {vdY(  
public final static int BUBBLE = 2; \ &47u1B  
public final static int SELECTION = 3; RAWzQE }  
public final static int SHELL = 4; Q]e]\J  
public final static int QUICK = 5; I51I(QF=  
public final static int IMPROVED_QUICK = 6; LXaq  
public final static int MERGE = 7; >>|47ps3  
public final static int IMPROVED_MERGE = 8; kW0ctGFYlf  
public final static int HEAP = 9; YQb503W"d~  
r dCs  
public static void sort(int[] data) { 3aU5rbi|B  
sort(data, IMPROVED_QUICK); t~ <HFY*w  
} ) ]DqK<-  
private static String[] name={ 0s79rJ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" m^ Epw4eg  
}; H3 -?cy  
=cO5Nt  
private static Sort[] impl=new Sort[]{ IwRP,MQ~  
new InsertSort(), +s^nT{B@\  
new BubbleSort(), ,4Q8r:_ u  
new SelectionSort(), z?pi /`y8>  
new ShellSort(), 8 Vf #t!t  
new QuickSort(), i[I&m]N  
new ImprovedQuickSort(), Ve${g`7&  
new MergeSort(), a,(nf1@5  
new ImprovedMergeSort(), 2qojU%fiH  
new HeapSort() #%w+PL:*O  
}; )O5@R  
:{4C2qK>  
public static String toString(int algorithm){ ]>1`Fa6_  
return name[algorithm-1]; 4>OS2b`.;  
} /:ZwGyT;  
(:F]@vT  
public static void sort(int[] data, int algorithm) { +r7hc;+G  
impl[algorithm-1].sort(data); ]=9 d'WL  
} %a|Qw(4\  
oUO3,2bn  
public static interface Sort { J% n#uUs  
public void sort(int[] data); l fF RqZ  
} @,7r<6E  
EV-sEl8ki  
public static void swap(int[] data, int i, int j) { _>BYUPY  
int temp = data; bDudETl  
data = data[j]; v(GnG  
data[j] = temp; QO0@Ax\b  
} <-fvYer  
} BMI`YGjY1  
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