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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。 ~C M%WvS  
插入排序: pV:;!+  
h.T]J9;9  
package org.rut.util.algorithm.support; q9+`pj  
X% JQ_Z  
import org.rut.util.algorithm.SortUtil; 3<F\ 5|  
/** .Z?@;2<l  
* @author treeroot T<XGG_NOl  
* @since 2006-2-2 8k[=$Ro  
* @version 1.0 p6S{OUiG  
*/ |y%pJdPk=  
public class InsertSort implements SortUtil.Sort{ W3Gg<!*Uo  
zy8Z68%E`*  
/* (non-Javadoc) fL$U%I3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8`g@ )]Iy  
*/ *ay&&S*  
public void sort(int[] data) { &k53*Wo  
int temp; Bk)E]Fk|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }SD*@w  
} }Br=eaY  
} -nK\+bTL}  
} lQ&"p+n  
G42J  
} B8Vhl:p  
)WWqi,T}  
冒泡排序: SfTTB'9  
3(o}ulp  
package org.rut.util.algorithm.support; 7+]+S`p  
~t=73 fwB  
import org.rut.util.algorithm.SortUtil; t.\<Q#bN#  
Cj/J&PDQ  
/** ^lvYj E  
* @author treeroot 9f=L'{  
* @since 2006-2-2 lKVV*RR}  
* @version 1.0 <[l0zE5Z8'  
*/ !m {d6C[  
public class BubbleSort implements SortUtil.Sort{ 1Jm'9iy3  
E^s<5BC;  
/* (non-Javadoc) o,NTI h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) , B90r7K:  
*/ s8:-*VR9  
public void sort(int[] data) { 9Gh:s6  
int temp; +4 W6{`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +jD*Jtb<  
if(data[j] SortUtil.swap(data,j,j-1); W _b!FQ]  
} )70i/%}7  
} reP)&Fo  
} t GS>f>i  
} 'v^Zterr  
dgEH]9j&  
} iVaCXXf'  
{u}d`%_.M  
选择排序: =# /BCL7  
hnYL<<AA  
package org.rut.util.algorithm.support; r'F)8%  
/`kM0=MMa  
import org.rut.util.algorithm.SortUtil; <Jc :a?ICe  
%VH{bpS|i:  
/** 9B)<7JJX!J  
* @author treeroot 6lAHB*`  
* @since 2006-2-2 8el\M/u{  
* @version 1.0 uD=FTx  
*/ *`]#ntz9  
public class SelectionSort implements SortUtil.Sort { x*#9\*@EI  
N\{{:<Cp\  
/* <sncW>?!~  
* (non-Javadoc) ?y/LMja  
* $eu-8E'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,@Fde=Lw  
*/ vk><S|[n  
public void sort(int[] data) { Mn<#rBE B  
int temp; ~bD'QMk  
for (int i = 0; i < data.length; i++) { ?mi1PNps#  
int lowIndex = i; b[/uSwvi  
for (int j = data.length - 1; j > i; j--) { bC h  
if (data[j] < data[lowIndex]) { fbrCl!%P  
lowIndex = j; 5>x?2rp  
} wZnv*t_  
} ^'G,sZ6'Nh  
SortUtil.swap(data,i,lowIndex); Vi*HG &DD  
} (3VV(18  
} =O o4O CF2  
7[I%UP  
} '$0~PH&  
w D}g\{P  
Shell排序: 8! X K[zL  
5jey%)=  
package org.rut.util.algorithm.support; s(0"r.  
Hx?OCGj=S*  
import org.rut.util.algorithm.SortUtil; yx\I&\i  
^q}cy1"j"  
/** zgn~UC6&  
* @author treeroot 9Hm>@dBhM  
* @since 2006-2-2 wa%;'M&  
* @version 1.0 AuIg=-xR  
*/ )`,Y ^`F2  
public class ShellSort implements SortUtil.Sort{ =\FV_4)  
D.ERt)l>  
/* (non-Javadoc) Sg+0w7:2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b[Qe} `W  
*/ ^ rh{  
public void sort(int[] data) { 0-at#r:  
for(int i=data.length/2;i>2;i/=2){ 2tqj]i  
for(int j=0;j insertSort(data,j,i); CzfGb4  
} |r<#>~*  
} +t7n6  
insertSort(data,0,1); ?,z/+/:  
} a d#4W0@S  
Oe)B.{;Ph  
/** \r`><d  
* @param data }!9KxwC(  
* @param j G?dxLRy.do  
* @param i nXJG4$G  
*/ We)l_>G  
private void insertSort(int[] data, int start, int inc) { a+=.(g  
int temp; DFM~jlH  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (N^tg8Z<  
} 6d{&1-@>  
} (iJ9ekB  
} 3aUWQP2  
Vo`,|3^  
} 8Cef ]@x  
rE?Fp  
快速排序: ,LodP%%UV  
U9(p ^  
package org.rut.util.algorithm.support; ! _p(H  
vw)lD9-"  
import org.rut.util.algorithm.SortUtil; k];NTALOG  
|w+N(wcJ  
/** Q4h6K 7  
* @author treeroot @<ILF69b  
* @since 2006-2-2 ?F" mZu  
* @version 1.0 QzilivJf  
*/ yFY:D2  
public class QuickSort implements SortUtil.Sort{ l|j}Ggen  
yp?a7t M  
/* (non-Javadoc) %DhM}f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) srQ]TYH ,  
*/ M37GQvo   
public void sort(int[] data) { Nv5)A=6#AA  
quickSort(data,0,data.length-1); /8Ru O  
} 0BrAgv"3a_  
private void quickSort(int[] data,int i,int j){ $_f"NE}  
int pivotIndex=(i+j)/2; .I%`yhCW  
file://swap E+z"m|G  
SortUtil.swap(data,pivotIndex,j); <44A*ux  
;!(GwgllD  
int k=partition(data,i-1,j,data[j]); *bSxobn  
SortUtil.swap(data,k,j); <c.8f;1F  
if((k-i)>1) quickSort(data,i,k-1); gGE&}EoLU  
if((j-k)>1) quickSort(data,k+1,j); "ph<V,lg  
+)ba9bJ|  
} ;ZoEqMv  
/** wfQ^3HL  
* @param data b Od<x >@  
* @param i FH)_L1n  
* @param j >K n7A  
* @return &>A<{J@VL  
*/ i_f\dkol  
private int partition(int[] data, int l, int r,int pivot) { !hjA   
do{ Ox%p"xuP,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); oM(8'{S=  
SortUtil.swap(data,l,r); }l7@:ezZZ7  
} :^rt8>~  
while(l SortUtil.swap(data,l,r); GyF  
return l; pD17r}%  
} 6wq>&P5  
+SNjU"x  
} g\]~H%2 ,  
{ RC&Ub>  
改进后的快速排序: :5[1Iepdn  
K_ Odu^  
package org.rut.util.algorithm.support; v3b+Ddp  
DHQs_8Df  
import org.rut.util.algorithm.SortUtil; <j}A=SDZ)  
He*c=^8k  
/** 3|(<]@ $  
* @author treeroot #HTq \J!  
* @since 2006-2-2 2D2} *);eW  
* @version 1.0 YkSHJ{ >  
*/ `8/D$  
public class ImprovedQuickSort implements SortUtil.Sort { J%FF@.)k  
~@$RX: p  
private static int MAX_STACK_SIZE=4096; K$KVm^`  
private static int THRESHOLD=10; lWakyCS  
/* (non-Javadoc) 7yQw$zG,Iz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |8?DQhd}  
*/ x|$|~ 6f=n  
public void sort(int[] data) { X/ lmj_v  
int[] stack=new int[MAX_STACK_SIZE]; tID=I0D  
"\+.S]~  
int top=-1; C7Fx V2  
int pivot; T^icoX=c4  
int pivotIndex,l,r; nc^DFP  
+_1sFH`  
stack[++top]=0; weH3\@  
stack[++top]=data.length-1; hgK 4;R  
=Q*x=}NH  
while(top>0){ s#H_ QOE  
int j=stack[top--]; 0.[tEnLZ  
int i=stack[top--]; qLV3Y?S!L  
VWK%6Ye0  
pivotIndex=(i+j)/2; }<^QW't_Y  
pivot=data[pivotIndex]; "0 $UnR  
Y94S!TbB  
SortUtil.swap(data,pivotIndex,j); Z&of-[)  
&B\ sG=  
file://partition ' eh }t  
l=i-1; a"&cm'\lL  
r=j; +c$:#9$ |  
do{ ZeqsXz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); e2yCWolmTS  
SortUtil.swap(data,l,r); u|cP&^S  
} Eh*(N(`  
while(l SortUtil.swap(data,l,r); 01~ nC@;  
SortUtil.swap(data,l,j); SuXeUiK.[  
'+\t,>nRkl  
if((l-i)>THRESHOLD){  <H npI  
stack[++top]=i; r{ KQ3j9O  
stack[++top]=l-1; IGOEqUw*  
} l5#SOo\  
if((j-l)>THRESHOLD){ =!\Y;rk  
stack[++top]=l+1; d ehK#8  
stack[++top]=j; Xe&p.v  
} 6Ey@)p..E  
waU2C2!w  
} h[mJ=LIrg  
file://new InsertSort().sort(data); wjfq"7Q  
insertSort(data); 6qSsr]  
} ~owodc  
/** ?,i}Qr [Q  
* @param data >Ptu-*  
*/ qOy0QZ#0  
private void insertSort(int[] data) { [ eb k u_  
int temp; pI_dV44W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); adPd}rt;  
} L2=:Nac  
} h5(OjlMC  
} zdm2`D;~p  
 |nfMoUI  
} =*R6 O,  
_+.JTk  
归并排序: q ~^!Ck+#*  
a7685Y  
package org.rut.util.algorithm.support; j^%N:BQ&  
mV^~  
import org.rut.util.algorithm.SortUtil; b:cy(6G(  
I1 Otu~%d  
/** B77`azwF  
* @author treeroot d^f rKPB  
* @since 2006-2-2 *%Fu/  
* @version 1.0 5+Ao.3Xn  
*/ Y::O*I2  
public class MergeSort implements SortUtil.Sort{ 7MGvw-Tpb7  
80ox$U  
/* (non-Javadoc) w2 r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SF`(`h0e  
*/ |s;']  
public void sort(int[] data) { MT7B'hd  
int[] temp=new int[data.length]; \VA*3U^@  
mergeSort(data,temp,0,data.length-1); D*j^f7ab  
} Tw7]   
k?$I4&|5Nt  
private void mergeSort(int[] data,int[] temp,int l,int r){ X`1R&K;z^  
int mid=(l+r)/2; XDHi4i47`o  
if(l==r) return ; 3)OQgeKU  
mergeSort(data,temp,l,mid); ',c~8U#q  
mergeSort(data,temp,mid+1,r); gJCZ9{Nl  
for(int i=l;i<=r;i++){ LM+d3|gSV  
temp=data; C}(@cn `L  
} Y%eq2%  
int i1=l; C$0g2X  
int i2=mid+1; ~d].<Be  
for(int cur=l;cur<=r;cur++){ i(_A;TT6  
if(i1==mid+1) GGf<9!:  
data[cur]=temp[i2++]; Le:(;:eL>t  
else if(i2>r) N/ f7"~+`  
data[cur]=temp[i1++]; >,E^ R`y  
else if(temp[i1] data[cur]=temp[i1++]; Nk<^ Qv  
else 4"_`Mu_%  
data[cur]=temp[i2++]; {0 j_.XZ  
} [F'|KcE3  
} 2:_6nWl  
=#v? }JG  
} |JP19KFx'B  
9Msy=qvYG  
改进后的归并排序: z~ywFk}KGd  
<N1wET-  
package org.rut.util.algorithm.support; B]@25  
FJ-H ;  
import org.rut.util.algorithm.SortUtil; L,[Q{:CS  
]8}51y8  
/** +[<YE  
* @author treeroot AYgXqmH~+  
* @since 2006-2-2 fCwE1r*^  
* @version 1.0 fGO\f;P  
*/ ^lAM /  
public class ImprovedMergeSort implements SortUtil.Sort { TS#[[^!S  
nYFrp)DLK  
private static final int THRESHOLD = 10; FY ms]bv  
I#&r5Q  
/* ZZ7qSyBs?  
* (non-Javadoc) i'7+ ?YL  
* LP=j/qf|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dH!z<~  
*/ An$2='=/  
public void sort(int[] data) { xC,x_:R`  
int[] temp=new int[data.length]; bh<;px-  
mergeSort(data,temp,0,data.length-1); Vv45w#w;  
} !t^DN\\#  
PO`p.("h  
private void mergeSort(int[] data, int[] temp, int l, int r) { C+ll A  
int i, j, k; }Nsdk',}  
int mid = (l + r) / 2; D%abBE1  
if (l == r) USEb} M`  
return; 0z8?6~M;<  
if ((mid - l) >= THRESHOLD) Jsysk $R  
mergeSort(data, temp, l, mid);  L23}{P  
else w?8SQI,~X  
insertSort(data, l, mid - l + 1); ;~EQS.Qp  
if ((r - mid) > THRESHOLD) d51'[?(  
mergeSort(data, temp, mid + 1, r); Aj)Q#Fd[  
else xwf-kwF8^  
insertSort(data, mid + 1, r - mid); nUOi~cs  
L%T(H<G  
for (i = l; i <= mid; i++) { {d'-1z"q  
temp = data; pA ~} _  
} >%k6k1CZ  
for (j = 1; j <= r - mid; j++) {  k~ ^4  
temp[r - j + 1] = data[j + mid]; MQQm3VaKS  
} b,E?{uG  
int a = temp[l]; D&" D[|@  
int b = temp[r]; y %Q. (  
for (i = l, j = r, k = l; k <= r; k++) { <Gi%+I@szl  
if (a < b) { + cfEyiub  
data[k] = temp[i++]; G{3 |d/;Bt  
a = temp; O\ZC$XF  
} else { >ESVHPj]  
data[k] = temp[j--]; #*'Qm  A  
b = temp[j]; Dz(\ ?  
} S^eem_C  
} y|2<Vc  
} G}fB d  
@kWL "yy,  
/** +e-F`k  
* @param data x#J9GP.  
* @param l gSz<K.CT  
* @param i 94rSB}b.O  
*/ j#1G?MF  
private void insertSort(int[] data, int start, int len) { lh8Q tPe  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P.'.KZJ:WD  
} X.eOw>.  
} h0'*)`;z  
} vR!+ 8sy$  
} JaCX}[R  
m&:&z7^p  
堆排序: zj1~[$  (  
{> YsrD C  
package org.rut.util.algorithm.support; Io1j%T#ZT  
eQuu\/z*H  
import org.rut.util.algorithm.SortUtil; 5#,H&ui\  
P:"R;YCvE  
/** YYv0cV{E  
* @author treeroot >fH0>W+!  
* @since 2006-2-2 "' JnFM  
* @version 1.0 /MGapmqV9  
*/ |9#q7kM  
public class HeapSort implements SortUtil.Sort{ {A/r)  
EtKq.<SJ  
/* (non-Javadoc) j_~KD}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xp:A;i9  
*/ {]k#=a4  
public void sort(int[] data) { +e>SK!kB7  
MaxHeap h=new MaxHeap(); #ibwD:{  
h.init(data); UK ':%LeL  
for(int i=0;i h.remove();  ]n!V  
System.arraycopy(h.queue,1,data,0,data.length); r5}p .  
} ppyy0E^M  
 E^1yU  
private static class MaxHeap{ CS7b3p!I  
srVWN:uuH  
void init(int[] data){ 5/=$p:E>  
this.queue=new int[data.length+1]; ';tlV u  
for(int i=0;i queue[++size]=data; ^kKLi  
fixUp(size); )9YDNVo*-  
} g:o/^_  
} Uwc%'=@  
Lce,]z\ _  
private int size=0;  g\q .  
x MJ-=  
private int[] queue;  FA+HR  
6}^x#9\  
public int get() { sL$sj|"S  
return queue[1]; p&(0e,`z/  
} -9b=-K.y  
1bFZyD"  
public void remove() { \p4*Q}t  
SortUtil.swap(queue,1,size--); .]v>LsbhF  
fixDown(1); dn(!wC]  
} kR<sSLEb  
file://fixdown f 2WVg;Z  
private void fixDown(int k) { aTvyz r1  
int j; oGcgd$%ZB  
while ((j = k << 1) <= size) { _Xf1FzF+a  
if (j < size %26amp;%26amp; queue[j] j++; Y&6jFT_  
if (queue[k]>queue[j]) file://不用交换 1)X|?ZD]F  
break; 7{#p'.nc5  
SortUtil.swap(queue,j,k); b~gq8,Fatb  
k = j; ynsYU(  
} TGJz[Ny  
} ht -'O"d:  
private void fixUp(int k) { REh"/d  
while (k > 1) { 5U2%X pO   
int j = k >> 1; Et0gPX-  
if (queue[j]>queue[k]) '.v;/[0  
break; -wn-PB@r  
SortUtil.swap(queue,j,k); +~5Lo'^  
k = j; o?a2wY^_  
} L4po1  
} /@`"&@W'  
,RPb <3 B  
} NS[Z@@  
jJ2rfdfj  
} 6()Jx%  
!X}+JeU '  
SortUtil: MT{1/A;`)  
*).  
package org.rut.util.algorithm; 1I2n dt  
C6e5*S  
import org.rut.util.algorithm.support.BubbleSort; hC$e8t60  
import org.rut.util.algorithm.support.HeapSort; Es[3Ppz  
import org.rut.util.algorithm.support.ImprovedMergeSort; `{#""I^_  
import org.rut.util.algorithm.support.ImprovedQuickSort; AF:_&gF  
import org.rut.util.algorithm.support.InsertSort; L'wR$  
import org.rut.util.algorithm.support.MergeSort; =c6d $  
import org.rut.util.algorithm.support.QuickSort; gW~YB2 $  
import org.rut.util.algorithm.support.SelectionSort; a!o%x  
import org.rut.util.algorithm.support.ShellSort; rCo}^M4Pb  
b'O/u."O  
/** [r2V+b.C  
* @author treeroot w"v96%"Y  
* @since 2006-2-2 8(? &=>@  
* @version 1.0 Jq^[^  
*/ M(> 74(}]  
public class SortUtil { (6fD5XtS  
public final static int INSERT = 1; -c>3|bo  
public final static int BUBBLE = 2; ndQw>  
public final static int SELECTION = 3; PcsYy]Q/  
public final static int SHELL = 4; mU[\//  
public final static int QUICK = 5; ;1~n|IY  
public final static int IMPROVED_QUICK = 6; nKE^km  
public final static int MERGE = 7; "/R?XCBZsb  
public final static int IMPROVED_MERGE = 8; %qV:h#  
public final static int HEAP = 9; Ea4zC|;  
`C4(C4u  
public static void sort(int[] data) { >:.c?{%g*  
sort(data, IMPROVED_QUICK); ^2 dQVV.  
} x}ZXeqt{ {  
private static String[] name={ zW`Hqt;  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?<J~SF Tt  
}; |K. I%B  
xjp0w7L)J  
private static Sort[] impl=new Sort[]{ IfH/~EtX  
new InsertSort(), Lum=5zDo  
new BubbleSort(), 5]G%MB/|$  
new SelectionSort(), F*G]Na@6D  
new ShellSort(), c6b51)sQ"  
new QuickSort(), X[/7vSqZ@w  
new ImprovedQuickSort(), hGKQK ^bn  
new MergeSort(), Wt%Wpb8  
new ImprovedMergeSort(), /\,3AInLb  
new HeapSort() I?1 BGaAA  
}; blomB2vQ  
ce$ [H}rDB  
public static String toString(int algorithm){ *lDVV,T'}w  
return name[algorithm-1]; eJf]"-  
} V1,p<>9  
wtbN @g0  
public static void sort(int[] data, int algorithm) { rrC\4#H[??  
impl[algorithm-1].sort(data); "7-}#_!g  
} |zRrGQY m  
BuvnY  
public static interface Sort { ~"*W;|)  
public void sort(int[] data); ~APS_iG[  
} ,OrrGwp&  
oHfr glGX  
public static void swap(int[] data, int i, int j) { (<.\v@7HC  
int temp = data; QUkP&sz  
data = data[j]; r7R39#  
data[j] = temp; }x|q*E\  
} }S*]#jr&  
} iYiTkq  
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