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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。 Da-F(^E  
插入排序: yel>-=Vn  
a:zx&DwM  
package org.rut.util.algorithm.support; FAM`+QtNw  
7S] h:q%%  
import org.rut.util.algorithm.SortUtil; nyQ FS  
/** WcH^bAY6  
* @author treeroot <$?:|  
* @since 2006-2-2 -mY90]g  
* @version 1.0 {!N4|  
*/ &=HM}h  
public class InsertSort implements SortUtil.Sort{ #cdLg-v  
d.2b7q09  
/* (non-Javadoc) ) V@qH]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }S#.Pw%  
*/ `}zv17wp  
public void sort(int[] data) { Vaha--QB  
int temp; <ya'L&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /@3+zpaw X  
} #H!~:Xu   
} J3:P/n&  
} tH_# q"@)  
<(f4#B P  
} 4 T^M@+&|  
_ <>+Dk&  
冒泡排序: So`xd *C!  
+D h=D*  
package org.rut.util.algorithm.support; I]k'0LG*^  
{_q2kk  
import org.rut.util.algorithm.SortUtil; 46XB6z01  
N23s{S t  
/** }rO4b>J  
* @author treeroot MO _9Yi  
* @since 2006-2-2 8z/^Ql  
* @version 1.0 d\)v62P  
*/ ]ei] ) JI  
public class BubbleSort implements SortUtil.Sort{ G x,D'H'  
c U{LyZp  
/* (non-Javadoc) +Og O<P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 20fCWVw}?}  
*/ =x7ODBYW^  
public void sort(int[] data) { _eO]awsA  
int temp; [w{ZP4d>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ whLske-  
if(data[j] SortUtil.swap(data,j,j-1); R +\y" .  
} 4k#B5^iJ  
} " Y%\qw/wq  
} &Mc mA  
} xDQ$Ui.  
2f:'~ P56  
} ItRGq  
'R'>`?Nh  
选择排序: w}YHCh  
)j9FB  
package org.rut.util.algorithm.support; ]$L[3qA.  
+\W"n_PPy  
import org.rut.util.algorithm.SortUtil; >^Y 9p~  
PN'8"8`{  
/** NGze: gPmO  
* @author treeroot "q(&<+D@  
* @since 2006-2-2 ;m5M: Z"  
* @version 1.0 {'b8;x8h  
*/ O Z#?  
public class SelectionSort implements SortUtil.Sort { `3+U6>U [  
:w];N|48s  
/* kqyMrZ#  
* (non-Javadoc) t =*K?'ly  
* c^bA]l^a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }!d}febk_  
*/ xO.7cSqgw  
public void sort(int[] data) { $(NfHIX  
int temp; ~Fx[YPO,  
for (int i = 0; i < data.length; i++) { q6ikJ8E8b  
int lowIndex = i; kl={L{r  
for (int j = data.length - 1; j > i; j--) { ;T_9;RU<'b  
if (data[j] < data[lowIndex]) { AH7k|6ku<*  
lowIndex = j; fg1y@Dj/&  
} p/:5 bvA  
} %/^d]#  
SortUtil.swap(data,i,lowIndex); #>,cc?H-  
} 1z`,*eD7  
} }UO,R~q~  
D~y]d  
} <N*>9S,}  
asF- mf;D  
Shell排序: <G&v  
_ 4W#6!  
package org.rut.util.algorithm.support; srSTQ\l4  
T9$U./69-L  
import org.rut.util.algorithm.SortUtil; kDz.{Ih  
UP`q6] P  
/** $YC~02{  
* @author treeroot $e_ps~{7$  
* @since 2006-2-2 ~H$XSNPi  
* @version 1.0 p']AXJ`Z  
*/ ]S:@=9JB'  
public class ShellSort implements SortUtil.Sort{ H|!s.  
v]J# SlF  
/* (non-Javadoc) 7 dzE"m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \%C[l  
*/ 68)^i"DM<  
public void sort(int[] data) { l6 WcnJ  
for(int i=data.length/2;i>2;i/=2){ {L=[1  
for(int j=0;j insertSort(data,j,i); P~ykC{nD  
} };j&)M  
} esHiWHAC  
insertSort(data,0,1); xL BG}C  
} q)~qd$yMS  
6+FON$8  
/** b1#=q0Zl  
* @param data t#q> U%!  
* @param j J#kdyBmuO  
* @param i w* I+~o-  
*/ c]]F`B  
private void insertSort(int[] data, int start, int inc) { O<3,n;56Z  
int temp; Y; w]u_  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); } -vBRY  
} y(dS1.5F  
} Z~uKT n  
} br;G5^j3?  
]M2<I#hF.  
} ./ :86@O  
KRtu@;?  
快速排序: 93J)9T  
}*'ha=`J  
package org.rut.util.algorithm.support; bxN;"{>Xz  
F[u%t34'  
import org.rut.util.algorithm.SortUtil; p4t)Z#0  
V9 VP"kD  
/** x.yL'J\)  
* @author treeroot *p3P\ H^5  
* @since 2006-2-2 SSXS  
* @version 1.0 d0B+syl&4l  
*/ A|J\X=5  
public class QuickSort implements SortUtil.Sort{ OGFKc#  
!.9vW&t  
/* (non-Javadoc) =F&RQ}$   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [*G2wP[$  
*/ Fjzk;o  
public void sort(int[] data) { @>]3xHE6#=  
quickSort(data,0,data.length-1); @"!SU' *  
} q(7D8xG;F  
private void quickSort(int[] data,int i,int j){ :/NN =3e  
int pivotIndex=(i+j)/2; 3~Ln:4[6ID  
file://swap w#T,g9  
SortUtil.swap(data,pivotIndex,j);  62jA  
wDO5Zew!  
int k=partition(data,i-1,j,data[j]); q?L(V+X  
SortUtil.swap(data,k,j); _);Kb/  
if((k-i)>1) quickSort(data,i,k-1);  ?~.&Y  
if((j-k)>1) quickSort(data,k+1,j); {wP|b@(1t  
hBhkb ~Oky  
} 6\;1<Sw*  
/** ra>`J_  
* @param data )0mDN.  
* @param i JNaW> X$K  
* @param j _w;+Jh  
* @return :Y>] 6  
*/ At(9)6n8  
private int partition(int[] data, int l, int r,int pivot) { [QbXj0en$  
do{ .Qt3!ek  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); gN(hv.nQ  
SortUtil.swap(data,l,r); <gLtX[v!CL  
} 05B+WJ1  
while(l SortUtil.swap(data,l,r); m;f?}z_\$  
return l; }qhK.e  
} 5$U>M  
kW&Z%k  
} qD*\}b]9I  
sK0VT"7K  
改进后的快速排序: F5+_p@ !i  
gi'agB^  
package org.rut.util.algorithm.support; A#S:_d  
<UJJ],)^1A  
import org.rut.util.algorithm.SortUtil; 7[BL 1HI*  
|nN/x<v  
/** io7U[#  
* @author treeroot C-u/{CP  
* @since 2006-2-2 Ok&>[qu  
* @version 1.0 HY;?z `=  
*/ ':D&c  
public class ImprovedQuickSort implements SortUtil.Sort { 1:zu$|%7  
g@i>R>  
private static int MAX_STACK_SIZE=4096; 4D$sFR|?t  
private static int THRESHOLD=10; *\KvcRMGUa  
/* (non-Javadoc) b',bi.FH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b0Ov+ )7#  
*/ $af}+:'  
public void sort(int[] data) { -!,]Y10  
int[] stack=new int[MAX_STACK_SIZE]; jHlOP,kc  
7/_ VE  
int top=-1; qYZ7Zt;  
int pivot; Q5nyD/k4c  
int pivotIndex,l,r; 3D{4vMm X  
^:DhHqvK  
stack[++top]=0; yVHlT  
stack[++top]=data.length-1; gvqd 1?0w  
v\(m"|4(i  
while(top>0){ C'/M/|=Q#  
int j=stack[top--]; _SC  
int i=stack[top--]; ?vn 0%e868  
i `QK'=h[  
pivotIndex=(i+j)/2; C2rj]t  
pivot=data[pivotIndex]; /lB0>Us  
F[D0x26 ^  
SortUtil.swap(data,pivotIndex,j); iWM7, =1+  
c4>sE[]  
file://partition c48J!,jCd'  
l=i-1; %;(|KrUN  
r=j; _~ZQ b  
do{ U@J/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); BX(d"z b<  
SortUtil.swap(data,l,r); ? ZHE8  
} Of7) A  
while(l SortUtil.swap(data,l,r); I49l2>  
SortUtil.swap(data,l,j); {L4>2rF  
ix7 e] )m(  
if((l-i)>THRESHOLD){ ]9&q'7*L  
stack[++top]=i; `3y!XET  
stack[++top]=l-1; _8b]o~[Z+  
} {IPn\Bka  
if((j-l)>THRESHOLD){ ;q,)NAr&  
stack[++top]=l+1; `x$}~rP&)!  
stack[++top]=j; 'CX.qxF1;p  
}  n22hVw  
+yb$[E*  
} f'6qJk%J  
file://new InsertSort().sort(data); )xvx6?Ah|  
insertSort(data); R^yZG{?t  
} _d[2_b1  
/** 6+ $d  
* @param data KtU GI.X  
*/ vN,}aV2nq  
private void insertSort(int[] data) { OKZam ik~  
int temp; 0^y@p&;/.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $;2eH  
} L);||]B  
} VyoE5o  
} ()C^ta_]  
g)9JO6]  
} Krr?`n  
K\KO5A  
归并排序: N=Uc=I7C  
adO!Gs9f?  
package org.rut.util.algorithm.support; I,<>%Z|'  
\'??  
import org.rut.util.algorithm.SortUtil; Jn<e"  
qBBYckS.  
/** I#S~  
* @author treeroot !q-:rW? c  
* @since 2006-2-2 iijd $Tv  
* @version 1.0 -?aw^du  
*/ "zedbJ0  
public class MergeSort implements SortUtil.Sort{ -.b Io  
HTUYvU*-  
/* (non-Javadoc) p&OJa$N$[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V+=*2?1  
*/ 53`9^|:  
public void sort(int[] data) { TDl!qp @  
int[] temp=new int[data.length]; !#c[~erNZ  
mergeSort(data,temp,0,data.length-1); lbKv  
} Tw`c6^%^y  
vfJ3idvo*w  
private void mergeSort(int[] data,int[] temp,int l,int r){ oDW<e'Jm  
int mid=(l+r)/2; S< EB&P  
if(l==r) return ; T6R7,Vt'v  
mergeSort(data,temp,l,mid); EtR@sJ<  
mergeSort(data,temp,mid+1,r); })zB".  
for(int i=l;i<=r;i++){ Jcalf{W6  
temp=data; J-, H6u  
} MdVCD^B  
int i1=l; 84p[N8  
int i2=mid+1; !bZhj3.  
for(int cur=l;cur<=r;cur++){ piYws<Q  
if(i1==mid+1) Bbl)3$`,  
data[cur]=temp[i2++]; O^X[9vrW  
else if(i2>r) m~Y'$3w  
data[cur]=temp[i1++]; vZ[ $H  
else if(temp[i1] data[cur]=temp[i1++]; ZVdsxo<  
else .7pGx*WH^Y  
data[cur]=temp[i2++]; Q{qj  
} iHE0N6%q  
} P~Te+ -jX}  
*xX( !t'  
} [+;FV!M6  
[GR]!\!%~  
改进后的归并排序: ]cF1c90%  
hl6,#2$  
package org.rut.util.algorithm.support; Y7*(_P3/  
y:g7'+c  
import org.rut.util.algorithm.SortUtil; x{NNx:T1  
?418*tXd  
/** ^MW\t4pZ  
* @author treeroot ,bZ"8Z"lss  
* @since 2006-2-2 +Cn yK(V  
* @version 1.0 _HWHQF7  
*/ ^8?j~&u$F  
public class ImprovedMergeSort implements SortUtil.Sort { ]]p19[4s  
5,HCeN  
private static final int THRESHOLD = 10; gdoJ4b  
g.[+yzuE6  
/* r#_7]_3  
* (non-Javadoc) *[d~Nk%Y$  
* H$~M`Y9I~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |8&-66pX  
*/ !X5o7b)  
public void sort(int[] data) { \LIy:$`8  
int[] temp=new int[data.length]; ~In{lQ[QX  
mergeSort(data,temp,0,data.length-1); ; g Z%U  
} fKL'/?LD]  
tA`mD>[  
private void mergeSort(int[] data, int[] temp, int l, int r) { uY&=eQ_Cb  
int i, j, k; Cz'xGW{  
int mid = (l + r) / 2; ]j& FbP)3  
if (l == r) +M44XhT  
return; ftYR,!&  
if ((mid - l) >= THRESHOLD) b@=z rhQ  
mergeSort(data, temp, l, mid); RH!SW2o<  
else 5Y(r\Dd  
insertSort(data, l, mid - l + 1); 'RDWU7c9]  
if ((r - mid) > THRESHOLD) 'R^iKNPs  
mergeSort(data, temp, mid + 1, r); ]s*5[ =uc2  
else 3C277nx  
insertSort(data, mid + 1, r - mid); KqN!?anPr  
=ud `6{R  
for (i = l; i <= mid; i++) { E4Y "X  
temp = data; -'80>[}q/  
} 7<h.KZPc  
for (j = 1; j <= r - mid; j++) { ixOEdQ  
temp[r - j + 1] = data[j + mid]; Y3-]+y%l  
} q{a#HnZo"  
int a = temp[l]; e{,!|LhpQ  
int b = temp[r]; yJnPD/i  
for (i = l, j = r, k = l; k <= r; k++) { ]UK`?J=t2g  
if (a < b) { :&Qb>PH[  
data[k] = temp[i++]; 'n~fR]h}  
a = temp; sS C?io  
} else { |WB"=PE  
data[k] = temp[j--]; WI,40&<  
b = temp[j]; 0(wf{5  
} uVN.=  
} >HE,'  
} 4Z*|Dsw  
riID,aut  
/** )yHJ[  
* @param data e&d3SQ%  
* @param l E::L?#V  
* @param i Oc7 >S.1  
*/ 3"5.eZSOW  
private void insertSort(int[] data, int start, int len) { a*V9_Px$&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); D^|jZOJ  
} p?Z(rCp  
} 3f_i1|>)'  
} / >%L[RJ4  
} O4T'o.  
Y mq3ty]Pe  
堆排序: S2ark,sp6  
Zotz?j VVr  
package org.rut.util.algorithm.support; uii7b 7[w  
YZ0en1ly  
import org.rut.util.algorithm.SortUtil; *yrnK3  
y $:yz;  
/** ?RDO] I>  
* @author treeroot Ru:n~77{  
* @since 2006-2-2 KL "Y!PN:  
* @version 1.0 1:_=g#WH  
*/ USprsaj  
public class HeapSort implements SortUtil.Sort{ FS8S68  
fVYiwE=F  
/* (non-Javadoc) LaDY`u0G%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9J?W '8s5  
*/ PCtkjd  
public void sort(int[] data) { 3 :UA<&=s  
MaxHeap h=new MaxHeap(); RYt6=R+f  
h.init(data); J=):+F=  
for(int i=0;i h.remove(); 5lO^;.cS,  
System.arraycopy(h.queue,1,data,0,data.length); %8 qSv%_  
} t')h{2&&!2  
`Z:3` 7c  
private static class MaxHeap{ ;J'OakeVO  
c )03Ms4 D  
void init(int[] data){ _D-5}a"  
this.queue=new int[data.length+1]; 3g;T?E  
for(int i=0;i queue[++size]=data; d]MGN^%o  
fixUp(size); 90p3V\LO  
} i(0hvV>'  
} )6G" *  
P&mtA2  
private int size=0; m*gj|1k  
E[UO5X  
private int[] queue; u^l*5F%DK  
7gm:ZS   
public int get() { A';n6ne%i  
return queue[1]; ' X}7]y  
} @LcT-3u  
qp\BV#E  
public void remove() { [yC"el6PM  
SortUtil.swap(queue,1,size--); /tP7uVL R  
fixDown(1);  qtzFg#  
} qL3@PSN?|  
file://fixdown Wk}D]o0^@  
private void fixDown(int k) { 66 N)  
int j; b~j~  
while ((j = k << 1) <= size) { 847 R   
if (j < size %26amp;%26amp; queue[j] j++; %[XY67A3I  
if (queue[k]>queue[j]) file://不用交换 ?I\v0H*  
break; .liyC~YW  
SortUtil.swap(queue,j,k); *="m3:c'J  
k = j; 9\>sDSCx  
} =5Wp&SM6  
} |YRY!V_w  
private void fixUp(int k) { 2A>C+Y[7\  
while (k > 1) { y^G>{?Tha  
int j = k >> 1; {V0>iN:~S  
if (queue[j]>queue[k]) 7 5|pp  
break; *0~M  
SortUtil.swap(queue,j,k); n$YE !D'  
k = j; 2m\m/O  
} F@1d%c  
} "<x&pQZ%  
q3)wr%!k5D  
} ]H+{eJB7O  
jN6b*-2  
} y AOg\+  
"5}%"-#  
SortUtil: +2Ql~w@$^l  
XVF^,Yf  
package org.rut.util.algorithm; q & b5g !  
TP{Gt.e  
import org.rut.util.algorithm.support.BubbleSort; T(V8; !  
import org.rut.util.algorithm.support.HeapSort; s^cc@C  
import org.rut.util.algorithm.support.ImprovedMergeSort; b_=8!Q.:  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2e.N"eLNt  
import org.rut.util.algorithm.support.InsertSort; IA2GUnUhu  
import org.rut.util.algorithm.support.MergeSort; b=1%pX_  
import org.rut.util.algorithm.support.QuickSort; z,x" a  
import org.rut.util.algorithm.support.SelectionSort; +]c}rWm  
import org.rut.util.algorithm.support.ShellSort; V&[eSVY?  
 U(~U!O}  
/** 4V$fGjJ3  
* @author treeroot sAYV)w3u"  
* @since 2006-2-2 g4wZvra6%)  
* @version 1.0 VgMP^&/gZ  
*/ |1l&@#j!2  
public class SortUtil { %`+'v_iu  
public final static int INSERT = 1; i3PKqlp.  
public final static int BUBBLE = 2; 2tf6GX:  
public final static int SELECTION = 3; xnbsg!`;7W  
public final static int SHELL = 4; N _G4_12(  
public final static int QUICK = 5; e:OyjG5_  
public final static int IMPROVED_QUICK = 6; 6/6Rah!  
public final static int MERGE = 7; Hbk&6kS  
public final static int IMPROVED_MERGE = 8; FJT1i@N  
public final static int HEAP = 9; _]=9#Fg7{  
CZ3].DA|z  
public static void sort(int[] data) { 9!}q{2j  
sort(data, IMPROVED_QUICK); G52Z)^  
} ErDL^M-`  
private static String[] name={ d0 -~| `5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" HH8;J66I&  
}; etyCrQ ?U  
c@(1:,R  
private static Sort[] impl=new Sort[]{ %hINpZMr  
new InsertSort(), M4?8xuC  
new BubbleSort(), gvyT-XI  
new SelectionSort(), >'`Sf ?+|  
new ShellSort(), *Hs*,}MS  
new QuickSort(), e g3L:rk_  
new ImprovedQuickSort(), 2+'|kt2  
new MergeSort(), ,J(lJ,c  
new ImprovedMergeSort(), S0LszW)e  
new HeapSort() RtC'v";6  
}; [M:S`{SbY  
:c7CiP  
public static String toString(int algorithm){ ?2ItB`<(  
return name[algorithm-1]; #s2B%X  
} y94kX:q  
eOnT W4  
public static void sort(int[] data, int algorithm) { p<5!0 2yQ\  
impl[algorithm-1].sort(data); } 0M{A+  
} 4x,hj  
%l7fR}  
public static interface Sort { PLdn#S}.  
public void sort(int[] data); RUGv8"j  
} aFY u}kl  
 KG8W8&q  
public static void swap(int[] data, int i, int j) { fg&eoI'f  
int temp = data; \.<KA  
data = data[j]; PAZ$_eSK6  
data[j] = temp; V=}1[^  
} D.*>;5:0'  
} eko]H!Ov(  
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