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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。 B1STGL`nK  
插入排序: ~m |BC*)  
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package org.rut.util.algorithm.support; 626r^c=  
{8OCXus3m  
import org.rut.util.algorithm.SortUtil; |^aKs#va  
/** ]{iQ21`a-  
* @author treeroot 36NpfTW  
* @since 2006-2-2 v:U-6W_)|  
* @version 1.0 4Up/p&1@  
*/ }'.m*#Y  
public class InsertSort implements SortUtil.Sort{ 4z? l  
;aBG,dr}i  
/* (non-Javadoc) C]#,+q*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PM+[,H  
*/ B3BN`mdn>  
public void sort(int[] data) { PeT'^?>  
int temp; 6 r"<jh#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ise-O1'  
} putrSSL}  
} ?EL zj  
} :>*7=q=  
_L PHPj^Pg  
}  J *yg&  
Ib`XT0k  
冒泡排序: /\Ef%@  
9UkBwS`  
package org.rut.util.algorithm.support; }}[2SH'nH  
"#]$r  
import org.rut.util.algorithm.SortUtil; :0ep( <|;  
+H.`MZ=  
/** R8 T x[CJ5  
* @author treeroot z}@7'_iJ  
* @since 2006-2-2 G#CXs:1pd+  
* @version 1.0 liZxBs :%i  
*/ ?0SEMmp`H  
public class BubbleSort implements SortUtil.Sort{ *Uh!>Iv;  
RpK@?[4s  
/* (non-Javadoc) g*Phv|kI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K8~d^G  
*/ +:f"Y0  
public void sort(int[] data) { KP"+e:a%  
int temp; Rv=YFo[B  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Vj-h;rB0z  
if(data[j] SortUtil.swap(data,j,j-1); 74u&%Rj  
} <[phnU^ 8  
} yuVs YV@"  
} (ZGbh MK  
}  <Uur^uB  
y(&Ac[foS}  
} 6mE\OS-I  
y2v^-q3  
选择排序: iwq!w6+  
TV:9bn?r)  
package org.rut.util.algorithm.support; GeqPRah  
XuTD\g3)  
import org.rut.util.algorithm.SortUtil; O8o3O 6[Y  
p'k0#R$  
/** (mOtU8e  
* @author treeroot dveiQ  
* @since 2006-2-2 v^iAD2X/F  
* @version 1.0 %)|s1B'd  
*/ omFz@  
public class SelectionSort implements SortUtil.Sort { N;R^h? '  
LLI.8kn7  
/* 43w}qY1  
* (non-Javadoc) lMt=|66  
* 4 :v=pZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) edD)TpmE,  
*/ (BM47 D=v  
public void sort(int[] data) { jylD6IT  
int temp; [?gP;,  
for (int i = 0; i < data.length; i++) { B:<VA=  
int lowIndex = i; 5^cCY'I  
for (int j = data.length - 1; j > i; j--) { 5xBbrU;  
if (data[j] < data[lowIndex]) { =%7-ZH9  
lowIndex = j; Q/?$x*\>  
} [KQi.u  
} {_}I!`opr$  
SortUtil.swap(data,i,lowIndex); /}$+uBgJm  
} hb-%_c"kq  
} TzZq(? V  
b$7 +;I;  
} IgzQr >  
3R/bz0 V>  
Shell排序: 'R)Tn!6  
KoRV %@I  
package org.rut.util.algorithm.support; rjP/l6 ~'  
0_/[k*Re  
import org.rut.util.algorithm.SortUtil; y} '@R$  
2!\D PX  
/** JC"z&ka  
* @author treeroot eE Kf|I  
* @since 2006-2-2 K:M8h{Ua  
* @version 1.0 =D(j)<9$A  
*/ m~|40)   
public class ShellSort implements SortUtil.Sort{ 0J|3kY-n>  
cK@wsA^4  
/* (non-Javadoc) <v2;p}A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )+^+s d  
*/ ~Ei<Z`3}7"  
public void sort(int[] data) { h;Kx!5)y  
for(int i=data.length/2;i>2;i/=2){ TpaInXR  
for(int j=0;j insertSort(data,j,i); CITc2v3a  
} iscz}E,Y  
} `V1]k_h  
insertSort(data,0,1); sA~]$A;DM!  
} V9vTsmo(  
Iv *<L a  
/** \['Cj*ek  
* @param data nTas~~Q  
* @param j U:`Kss`  
* @param i =I<R!ZSN  
*/ aXVFc5C\  
private void insertSort(int[] data, int start, int inc) { Qrv<lE1V;  
int temp; t1".0  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); baasGa3}s  
} kstIgcI  
} ?< />Z)  
} e.C)jv6qr  
x2EUr,7  
} F [M,]?   
}k0_5S  
快速排序: s iaG'%@*r  
mw!F{pw  
package org.rut.util.algorithm.support; PCvWS.{  
29rX%09T]  
import org.rut.util.algorithm.SortUtil; _$'ashF  
/z!%d%"  
/** }C:r 9? T  
* @author treeroot E./2jCwI(Y  
* @since 2006-2-2 H|*m$| $,  
* @version 1.0 [ 3Gf2_  
*/ 7_L;E~\  
public class QuickSort implements SortUtil.Sort{ RN1_S  
ig!+2g  
/* (non-Javadoc) _#niyW+?~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) do%&m]#;  
*/ a[C@  
public void sort(int[] data) { KXy6Eno  
quickSort(data,0,data.length-1); $ `c:&  
} 9Na$W:P c  
private void quickSort(int[] data,int i,int j){ @F eTz[  
int pivotIndex=(i+j)/2; D- c4EV  
file://swap #R"*c hLV  
SortUtil.swap(data,pivotIndex,j); 9p/Bh$vJ  
rsQtMtS2  
int k=partition(data,i-1,j,data[j]); Z r8*et  
SortUtil.swap(data,k,j); S!UaH>Rh  
if((k-i)>1) quickSort(data,i,k-1); ^#$n~]s  
if((j-k)>1) quickSort(data,k+1,j); Wri<h:1  
53D]3  
} A<{{iBEI`  
/** d~H`CrQE*  
* @param data 8r{.jFGv  
* @param i *g%yRU{N  
* @param j %A`+WYeuX  
* @return t!XwW$@  
*/ o4X{L`m  
private int partition(int[] data, int l, int r,int pivot) { Wc#24:OKe3  
do{ +2{Lh7Ks  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); qna8|3eP  
SortUtil.swap(data,l,r); Nc`L;CP  
} Y|n"dMrL  
while(l SortUtil.swap(data,l,r); "[J^YKoF  
return l; +rd+0 `}C  
} e= AKD#  
yAt ^;  
} oxs#866x  
? k/`  
改进后的快速排序:  @5FQX  
bw7@5=?;  
package org.rut.util.algorithm.support; Ytkv!]"  
b;n[mk  
import org.rut.util.algorithm.SortUtil; az$FnVNn=  
,F|f. 7;  
/** p2eGm-Erq  
* @author treeroot HtFDlvdy]  
* @since 2006-2-2 [WmM6UEVS  
* @version 1.0 iMlWM-wz>O  
*/ U/U);frH  
public class ImprovedQuickSort implements SortUtil.Sort { icgfB-1|i  
l **X^+=$  
private static int MAX_STACK_SIZE=4096; dH!*!r>  
private static int THRESHOLD=10; U6K|fY N`  
/* (non-Javadoc) \D4:Nt#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CTb%(<r  
*/ (zk"~Ud  
public void sort(int[] data) { oU8q o-J1H  
int[] stack=new int[MAX_STACK_SIZE]; @]j1:PN-  
A"]YM'.  
int top=-1; f#;>g  
int pivot; .nJz G  
int pivotIndex,l,r; ;pAK_>  
>7|VR:U?B  
stack[++top]=0; ;p//QJB9  
stack[++top]=data.length-1; _)8s'MjA:&  
jp,4h4C^)  
while(top>0){ K0~rN.C!0  
int j=stack[top--]; ?4,T}@P  
int i=stack[top--];  R&&4y 7  
A^g(k5M*  
pivotIndex=(i+j)/2; Nb\4 /;#  
pivot=data[pivotIndex]; &~CI<\o P  
V0@=^Bls  
SortUtil.swap(data,pivotIndex,j); LVGe]lD  
}#fbbtd  
file://partition ]M=&+c>H~  
l=i-1; aN?zmkPpov  
r=j; /: "1Z]@  
do{ =bOW~0Z1  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )`:UP~)H  
SortUtil.swap(data,l,r); ]Ze1s02(  
} \e*]Ls#jS  
while(l SortUtil.swap(data,l,r); 4x34u}l  
SortUtil.swap(data,l,j); %J(:ADu]  
W\3X=@|u)  
if((l-i)>THRESHOLD){ Y<OFsWYY  
stack[++top]=i; dPlV>IM$z  
stack[++top]=l-1; T)/eeZ$  
} 0J9x9j`&j  
if((j-l)>THRESHOLD){ o/E >f_k[  
stack[++top]=l+1; jcOcWB|  
stack[++top]=j; 1}x%%RD_  
} K?;DMUSY\  
afVT~Sf{  
} (QEG4&9  
file://new InsertSort().sort(data); +7Gwg  
insertSort(data); @ Y+oiB~Y  
} -w2/w@&  
/** J1k>07}|  
* @param data K- v#.e4  
*/ D*jM1w_`  
private void insertSort(int[] data) { B#A6v0Ta  
int temp; -@'FW*b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Lbgi7|&  
} .v K-LHs  
} pK*TE5]  
} Q ,g\  
dO'(2J8  
} Txu/{ M,  
#qki  
归并排序: { 6il`>=C  
*4'"2"  
package org.rut.util.algorithm.support; {7[Ox<Ho  
N2G{<>=  
import org.rut.util.algorithm.SortUtil; $'vU2L  
F9PxSk_\9  
/** 6nn *]|7  
* @author treeroot /~1+i'7V.,  
* @since 2006-2-2 llq<egZpm  
* @version 1.0 dysS9a,  
*/ "oyo#-5z  
public class MergeSort implements SortUtil.Sort{ &ZO0r ^  
_a, s )  
/* (non-Javadoc) F?0Ykjh3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OUnA;_  
*/ pa+hL,w{6  
public void sort(int[] data) { #!=tDc &  
int[] temp=new int[data.length]; M\j.8jG  
mergeSort(data,temp,0,data.length-1); _ q"Gix  
} c<~H(k'+c  
6tZI["\   
private void mergeSort(int[] data,int[] temp,int l,int r){ awRX1:T#;O  
int mid=(l+r)/2; ~N4m1s"  
if(l==r) return ; 0GLM(JmK  
mergeSort(data,temp,l,mid); Gv&V|7-f0  
mergeSort(data,temp,mid+1,r); P \I|,  
for(int i=l;i<=r;i++){ P55fL-vo|}  
temp=data; }>\C{ClI  
} kh<2BOV  
int i1=l; F4QVAOM]U  
int i2=mid+1; :jf3HG  
for(int cur=l;cur<=r;cur++){ kJU2C=m@e2  
if(i1==mid+1)  " bG2:  
data[cur]=temp[i2++]; u8^lB7!e/  
else if(i2>r) G@0&8  
data[cur]=temp[i1++]; V`5 O{Gg  
else if(temp[i1] data[cur]=temp[i1++]; +@UV?"d  
else 42{~Lhxt  
data[cur]=temp[i2++]; gYj'(jB  
} (7Qo  
} hH.G#-JO  
BtZyn7a  
} sW$XH1Uf#  
g(g& TO  
改进后的归并排序: u*R_\*j@  
c-w)|-ac.  
package org.rut.util.algorithm.support; z:O8Ls^\T  
pg.%Pdr<$  
import org.rut.util.algorithm.SortUtil; ]e3Ax(i)  
qs6aB0ln  
/** iZ%yd-  
* @author treeroot 9WHddDA  
* @since 2006-2-2 |Tw~@kT@  
* @version 1.0 AA_%<zK  
*/ 7)m9"InDI  
public class ImprovedMergeSort implements SortUtil.Sort { b>k y  
:UdF  
private static final int THRESHOLD = 10; }Z>)DN=+  
`oJ [u:b  
/* 2%1hdA<  
* (non-Javadoc) pAEx#ck  
* :k"]5>(^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dq xs+  
*/ s2?&!  
public void sort(int[] data) { L];b< *d  
int[] temp=new int[data.length]; rQXzR  
mergeSort(data,temp,0,data.length-1); |ZBw<f  
} *:1ey{w:  
2 c}E(8e]  
private void mergeSort(int[] data, int[] temp, int l, int r) { Rcv9mj]l  
int i, j, k; <3iMRe  
int mid = (l + r) / 2; 0(I j%Wi,  
if (l == r) $'TM0Yu,  
return; a.'*G6~Qgw  
if ((mid - l) >= THRESHOLD) ^.tg7%dJ  
mergeSort(data, temp, l, mid); GILfbNcd  
else }G=M2V<L  
insertSort(data, l, mid - l + 1); 9L9sqZUB  
if ((r - mid) > THRESHOLD) TC. ,V_  
mergeSort(data, temp, mid + 1, r); (hsl~Jf  
else )"LJ hLg  
insertSort(data, mid + 1, r - mid); m|# y >4  
ivPg9J1S  
for (i = l; i <= mid; i++) { jpOp.  
temp = data; zi:BF60]=  
} 0V]s:S  
for (j = 1; j <= r - mid; j++) { l%ZhA=TKQ  
temp[r - j + 1] = data[j + mid]; J1kM\8%b\  
} wBzC5T%,  
int a = temp[l]; ToQ"Iy?  
int b = temp[r]; 4 :=]<sc,  
for (i = l, j = r, k = l; k <= r; k++) { a?.=V  
if (a < b) { @;kSx":b  
data[k] = temp[i++]; |}1dFp  
a = temp; kT?J5u _o  
} else { v<;Md-<  
data[k] = temp[j--]; Jwp7gYZ  
b = temp[j]; 'S~5"6r  
} ~ 1pr~  
} S'14hk<  
} Qd6FH2Pl  
+V+a4lU14  
/** /=h` L ,  
* @param data zQA`/&=Y  
* @param l H"KCK6  
* @param i 5IN(|B0  
*/ F?cK- .  
private void insertSort(int[] data, int start, int len) { }Lv;!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2tLJU  Z1  
} eQ"E   
} hcc/=_hA  
} -&;TA0~;  
} {!`4iiF  
M;NX:mX9  
堆排序: 6RM/GM  
Ie^l~ Gb  
package org.rut.util.algorithm.support; f5k6`7Vj]  
=EIkD9u  
import org.rut.util.algorithm.SortUtil; $N\Ja*g  
mTh]PPo   
/** zJXplvaL;  
* @author treeroot z=FZiH  
* @since 2006-2-2 .-=vx r  
* @version 1.0 Tr|JYLwF  
*/ *kVV+H<X|b  
public class HeapSort implements SortUtil.Sort{ b\ PgVBf9  
+3`alHUK  
/* (non-Javadoc) [V!tVDs&'o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dd["dBIZ '  
*/ 2Hdu:"j  
public void sort(int[] data) { ]d`VT)~vje  
MaxHeap h=new MaxHeap(); fatf*}eln  
h.init(data); >MK98(F  
for(int i=0;i h.remove(); 9Ee'Cm  
System.arraycopy(h.queue,1,data,0,data.length); sr}E+qf  
} i&k7-<  
6Iw\c  
private static class MaxHeap{ TKjFp%  
~4"dweu?  
void init(int[] data){ o.\oA6P_  
this.queue=new int[data.length+1]; rbQR,Nf2x  
for(int i=0;i queue[++size]=data; <1 pEwI~  
fixUp(size); }i2V.tVB-  
} E e]-qN*8  
} B;WCTMy}  
q9NoI(]e  
private int size=0; d1kJRJ   
iCyf Oh  
private int[] queue; _rYkis^ u  
|%v^W3  
public int get() { 1sCR4L:+  
return queue[1]; <ih[TtZ  
} -![|}pX  
+*^H#|!  
public void remove() { v3qA":(w+(  
SortUtil.swap(queue,1,size--); b6M  
fixDown(1); *' X3z@R  
} v LZoa-w:  
file://fixdown Wl Sm  
private void fixDown(int k) { `W-Fssu  
int j; N<-Gk6`C/  
while ((j = k << 1) <= size) { FC*[*  
if (j < size %26amp;%26amp; queue[j] j++; wAd9  
if (queue[k]>queue[j]) file://不用交换 !by\9  ?n  
break; kW (Bkuc)  
SortUtil.swap(queue,j,k); m4g$N)  
k = j; L-\GHu~)  
} go"Hf_  
} Ru~j,|0r4  
private void fixUp(int k) { d[35d J7F  
while (k > 1) { _2nx^E(pd  
int j = k >> 1; ;$tSb ~K+  
if (queue[j]>queue[k]) sC;+F*0g  
break; ?s _5&j7  
SortUtil.swap(queue,j,k); ASfaX:ke  
k = j; ]~nKK@Rw  
} Dxxm="FQZ  
} :yjFQ9^?&  
C $JmzrE  
} Uwi7)  
#,.Hr#3nI  
} X76e&~  
}T$p)"  
SortUtil: f {"?%Ku#  
0L KRN|@  
package org.rut.util.algorithm; @R  6@]Dm  
U?=Dg1  
import org.rut.util.algorithm.support.BubbleSort; 9E tz[`|  
import org.rut.util.algorithm.support.HeapSort; -]=@s  
import org.rut.util.algorithm.support.ImprovedMergeSort; ((I%'   
import org.rut.util.algorithm.support.ImprovedQuickSort; h@h!,;  
import org.rut.util.algorithm.support.InsertSort; 2Gdd*=4z  
import org.rut.util.algorithm.support.MergeSort; n}V_,:Z  
import org.rut.util.algorithm.support.QuickSort; `KQvJjA6  
import org.rut.util.algorithm.support.SelectionSort; TU7' J  
import org.rut.util.algorithm.support.ShellSort; rt| 7h>RQ  
^KELKv,_  
/** &w~d_</  
* @author treeroot F\KUZ[%  
* @since 2006-2-2 ,=:D   
* @version 1.0 /SrAW`;"  
*/ "Yca%:  
public class SortUtil { @]#1(9P  
public final static int INSERT = 1; w-{c.x  
public final static int BUBBLE = 2; p"Z-6m~  
public final static int SELECTION = 3; eN~=*Mn(za  
public final static int SHELL = 4; 3{h_&Gbo'D  
public final static int QUICK = 5; !L8#@BjU  
public final static int IMPROVED_QUICK = 6; $pudoAO  
public final static int MERGE = 7; +KEWP\r  
public final static int IMPROVED_MERGE = 8; )tpL#J  
public final static int HEAP = 9; i@ BtM9:  
U3:j'Su4H?  
public static void sort(int[] data) { [=_jYzD,j|  
sort(data, IMPROVED_QUICK); 6u}</>}  
} r)6M!_]AW  
private static String[] name={ B~du-Z22IZ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %!L9)(}"  
}; Ib0ZjX6  
nJLFfXWx  
private static Sort[] impl=new Sort[]{ 8Bg;Kh6B  
new InsertSort(), \r>6`-cs]  
new BubbleSort(), k: ;WtBC6j  
new SelectionSort(), jZ3fKyp#   
new ShellSort(), pU7lnS[  
new QuickSort(),  v<:R#  
new ImprovedQuickSort(), I)W`sBL  
new MergeSort(),  ^Va1f'g  
new ImprovedMergeSort(), H$KTo/  
new HeapSort() i@R 1/M  
};  _\HQvH  
'XBFv9&  
public static String toString(int algorithm){ 3<zp  
return name[algorithm-1]; * +wW(#[  
} a -moI+y  
2,P^n4~A?w  
public static void sort(int[] data, int algorithm) { L z1ME(  
impl[algorithm-1].sort(data); UOmY-\ &c  
} @oad,=R&  
7fX<511(  
public static interface Sort { =iD 3Yt  
public void sort(int[] data); 9?3&?i2-  
} <V6VMYXY4  
wsVV$I[2  
public static void swap(int[] data, int i, int j) { @{pLk4E  
int temp = data; Ji 0 tQV  
data = data[j]; FjI`uP  
data[j] = temp; 1~QPG\cdIX  
} .q3/_*  
} wuJ4kW$  
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