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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。 jC7&s$>Q"g  
插入排序: 89wU-Aggq  
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package org.rut.util.algorithm.support; }MHCd)78b  
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import org.rut.util.algorithm.SortUtil; $ep.-I>  
/** O }(VlR2  
* @author treeroot ^V#@QPK9  
* @since 2006-2-2 lsy?Ac  
* @version 1.0 t=-SH^$SR  
*/ 1$%V{4bJ  
public class InsertSort implements SortUtil.Sort{ ^sVX)%  
4)U.5FBk )  
/* (non-Javadoc) ?84 s4BpV1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,ztI,1"k  
*/ ?ON-+u  
public void sort(int[] data) { Qt/8r*Oe  
int temp; Z| V`B `  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EpFQ|.mQ  
} WC|.g,9#  
} gMaN)ESqd4  
} U5He?  
Q)LM-ZJKQ  
} hED=u/ql[  
2EfF=Fm>  
冒泡排序: S6AU[ASY.  
`~ * @q!  
package org.rut.util.algorithm.support; R0L&*Bjm  
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import org.rut.util.algorithm.SortUtil; ;~\MZYs3m  
[&nh5 |f  
/** DBCK2PlJ  
* @author treeroot S p^9& ^  
* @since 2006-2-2 l"2OP6d  
* @version 1.0 `g6h9GC6  
*/ uvV;Mlo]  
public class BubbleSort implements SortUtil.Sort{ }C#;fp"L  
opJMS6%r  
/* (non-Javadoc) y^}6!>Ou:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^1L>l9F  
*/ ##EYH1P]  
public void sort(int[] data) { i}o[- S4  
int temp; FDv+*sZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ yZ7,QsEsN  
if(data[j] SortUtil.swap(data,j,j-1); "B8"_D&  
} Ns[ym>x#2  
} S}ECW,K  
} ]f_6 '|5 A  
} 9> g,  
'I /aboDB  
} stk9Ah  
y;AL'vm9  
选择排序: H03jDM8Q  
D*YM[sN`  
package org.rut.util.algorithm.support; 8kIR y   
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import org.rut.util.algorithm.SortUtil; ^-[?#]  
bLd#xXl  
/** X0M1(BJgGo  
* @author treeroot SJ};TEA  
* @since 2006-2-2 vJU*>U,  
* @version 1.0 '^FGc  
*/ lME)?LOI  
public class SelectionSort implements SortUtil.Sort { & _g TD  
@;H,gEH^  
/* p$x{yz3  
* (non-Javadoc) y:v xE8$Q  
* f}@jFhr'<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QtJg ^2@  
*/ +ke1Cn'[  
public void sort(int[] data) { W!"}E%zx   
int temp; MiRdX#+Y  
for (int i = 0; i < data.length; i++) { ,+ #6Y_  
int lowIndex = i; }A:<%N  
for (int j = data.length - 1; j > i; j--) { \C`~S7jC  
if (data[j] < data[lowIndex]) { ?&^?-S% p  
lowIndex = j; $8'O  
} zBP>jM(8  
} |-CnT:|o  
SortUtil.swap(data,i,lowIndex); "/nNM{^  
} !E-Pa5s  
} 3^Q]j^e4Ny  
^+1#[E  
} V86Xg:?7  
ocyb5j  
Shell排序: His*t1o8'O  
8B#GbS K  
package org.rut.util.algorithm.support; M!tXN&V]  
A?oXqb  
import org.rut.util.algorithm.SortUtil; !Y:0c#MPH  
??i4z[0M  
/** Izv+i*(dl  
* @author treeroot 0^8)jpL$<9  
* @since 2006-2-2 W(Uu@^  
* @version 1.0 4#'(" #R  
*/ *k1<: @%e  
public class ShellSort implements SortUtil.Sort{ a!mf;m  
A;O~#Chvd  
/* (non-Javadoc) 1<<kA:d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 03iv3/{H  
*/ Z xb_K  
public void sort(int[] data) { fI7j):h;  
for(int i=data.length/2;i>2;i/=2){ |P.6<  
for(int j=0;j insertSort(data,j,i); .<K iMh  
} 3tmdi3s  
} q;:6_Qr  
insertSort(data,0,1); B: \Uw|Mf  
} }=2;  
7rC uu*M  
/** PDLpNTBf  
* @param data .y&QqxiE  
* @param j \G2B?>E;  
* @param i P@]8pIB0d^  
*/ wCHR7X0*b  
private void insertSort(int[] data, int start, int inc) { fbkd"7u  
int temp; ,\aUq|~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !gmH$1w  
} 7HHysNB"w  
} 0ilCS[`b  
} DS -fjH\  
0K-*WQ*#9  
} \@;\t7~  
8p!*?RRme[  
快速排序: Dr9 ?2  
tdF9NFMD  
package org.rut.util.algorithm.support; A~dQ\M  
L}yyaM)  
import org.rut.util.algorithm.SortUtil; gBf4's  
o|j*t7  
/** IjfxR mV  
* @author treeroot $j 5,%\4<  
* @since 2006-2-2 "aF8l<1xn  
* @version 1.0 cM_ Fp  
*/ oQ7]= |  
public class QuickSort implements SortUtil.Sort{ zLD|/`  
O3.C:?;x  
/* (non-Javadoc) {gKN d*[*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]}UgS+g>$  
*/ 5`<eKwls  
public void sort(int[] data) { s:Akk kF  
quickSort(data,0,data.length-1); V >,Z-&.%  
} <q,+ON\'  
private void quickSort(int[] data,int i,int j){ Cj*-[ EL<  
int pivotIndex=(i+j)/2; dtAbc7  
file://swap  pAu72O?  
SortUtil.swap(data,pivotIndex,j); M- 0i7%  
)=Q)BN[  
int k=partition(data,i-1,j,data[j]); +} mk>e/  
SortUtil.swap(data,k,j); @wq#>bm  
if((k-i)>1) quickSort(data,i,k-1); e0;  
if((j-k)>1) quickSort(data,k+1,j); xc?}TPpt  
t+nRw?Z  
} ^<0IB#dA  
/** b%t+,0s|  
* @param data u7;~  
* @param i Y&2aO1  
* @param j ba@=^Fa;  
* @return I@l>w._.  
*/ D0;tcm.$  
private int partition(int[] data, int l, int r,int pivot) { b8f+,2Tk  
do{ ap}5ElMR  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); L "<B;u5pM  
SortUtil.swap(data,l,r); f '6|OsVQ  
} 5v^L9!`@%v  
while(l SortUtil.swap(data,l,r); qXXGF_Q  
return l; IB|]fzy  
} A7P`lJgv  
{5%/T,  
} s~},y]YV  
oY`qInM_  
改进后的快速排序: CT d|`  
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package org.rut.util.algorithm.support; %TrF0{NR90  
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import org.rut.util.algorithm.SortUtil; %So] 3;'  
XV'fW~j\  
/** yW.COWL=)  
* @author treeroot L<(VG{)Z  
* @since 2006-2-2 Zwe[_z!*D  
* @version 1.0 J Lb6C 52  
*/ x:t<ZG&Xwg  
public class ImprovedQuickSort implements SortUtil.Sort { Ewo*yY>  
(3*UPZv  
private static int MAX_STACK_SIZE=4096; D{'#er  
private static int THRESHOLD=10; &HM-g7|C0E  
/* (non-Javadoc) 0p fnV%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `dJDucD  
*/ WP-jtZ?!"  
public void sort(int[] data) { =z:U~D  
int[] stack=new int[MAX_STACK_SIZE]; Q1>zg,r  
s>z2  k  
int top=-1; T`$KeuL  
int pivot; v\ZBv zd  
int pivotIndex,l,r; i=v]:TOu  
fY2wDD  
stack[++top]=0; |ZU#IQVQfn  
stack[++top]=data.length-1; S*%iiD)  
l9{#sas  
while(top>0){ ^ua12f  
int j=stack[top--]; H]&!'\aUz  
int i=stack[top--]; ;^l_i4A  
w 7tC|^#G  
pivotIndex=(i+j)/2; |Vx~fKS\  
pivot=data[pivotIndex]; R V!o4"\]  
Z{{ t^+XG  
SortUtil.swap(data,pivotIndex,j); `HUf v@5  
!v !N>f4S$  
file://partition )u@t.)ChAV  
l=i-1; xKp0r1}  
r=j; H?}wl%  
do{ Kla:e[{  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); um8AdiK  
SortUtil.swap(data,l,r); R9. HD?H@  
} ~4 FDKU C  
while(l SortUtil.swap(data,l,r); @~jxG%y86  
SortUtil.swap(data,l,j); ~uPk  
>zL |8f  
if((l-i)>THRESHOLD){ 7unA"9=[4V  
stack[++top]=i; I{dl%z73  
stack[++top]=l-1; i=QqB0  
} +Z? [M1g  
if((j-l)>THRESHOLD){ 6b:DJ  
stack[++top]=l+1; ~HP LV  
stack[++top]=j; eX<K5K.B  
} wsg//Ec]  
FU@uH U5fd  
} :$"7-a %f  
file://new InsertSort().sort(data); R'EW7}&  
insertSort(data); U($^E}I2(  
} k)E;(  
/** 8wi A  
* @param data fkW(Dt,  
*/ o`%I{?UCDJ  
private void insertSort(int[] data) { MM_py!=>7  
int temp; *d l"wH&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I=YCQ VvA  
} $e/*/.  
} /{N))  
} `F,zenk=  
ez0\bym  
} >=!AL,:  
rh$1-Y  
归并排序: 6=>7M b$  
k.Zll,s  
package org.rut.util.algorithm.support; ?"@ET9  
md6*c./Z  
import org.rut.util.algorithm.SortUtil; v_-ls"l  
1PU*:58[  
/** z\[(g  
* @author treeroot `2x34  
* @since 2006-2-2 h Z#\t  
* @version 1.0 -]&<Sr-  
*/ fjkT5LNx k  
public class MergeSort implements SortUtil.Sort{ # J.u  
R+^zy"~  
/* (non-Javadoc) @+0V& jc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T` ;k!F46  
*/ ,#%SK;1<  
public void sort(int[] data) { 9}whWh  
int[] temp=new int[data.length]; 5}SXYA}  
mergeSort(data,temp,0,data.length-1); &^ceOV0+  
} =[(%n94  
&9h  
private void mergeSort(int[] data,int[] temp,int l,int r){ n49s3|#)G  
int mid=(l+r)/2; >PH< N  
if(l==r) return ; t/LgHb:)  
mergeSort(data,temp,l,mid); 7sN0`7  
mergeSort(data,temp,mid+1,r); w?;b7i  
for(int i=l;i<=r;i++){ !@yQK<0  
temp=data; S%V%!803!  
} IuWX*b`v  
int i1=l; ~mcZUiP9  
int i2=mid+1; H8"tbU  
for(int cur=l;cur<=r;cur++){ o@@w^##  
if(i1==mid+1) vUfO4yfdg  
data[cur]=temp[i2++]; 5xv,!/@  
else if(i2>r) Fs9W>*(  
data[cur]=temp[i1++]; #,Bj!'Q'-  
else if(temp[i1] data[cur]=temp[i1++]; q5gP~*?  
else MVuP |&:n  
data[cur]=temp[i2++]; 7X:hIl   
} ,A?v,Fs>O[  
} 7n>|D^  
&`sR){R  
} {9:hg9;E*  
L3>4t: 8  
改进后的归并排序: jrdtd6b}  
-~]^5aa5n  
package org.rut.util.algorithm.support; 4i96UvkZ  
q]?+By-0  
import org.rut.util.algorithm.SortUtil; [R$liN99z;  
}Y$VB%&Hy  
/** W#Cq6N  
* @author treeroot }amE6  
* @since 2006-2-2 *hl<Y,W(  
* @version 1.0 ,m"l\jP  
*/ " V/k<HRw  
public class ImprovedMergeSort implements SortUtil.Sort { _6 /Qp`s  
R_~F6O^EO  
private static final int THRESHOLD = 10; fcn_<Yh0W  
xF^r`  
/* %SFw~%@3&~  
* (non-Javadoc) y (ldO;.  
* j~Ff/ O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tpd|y|  
*/ '&{(:,!B  
public void sort(int[] data) {  z8tt+AU  
int[] temp=new int[data.length]; X &09  
mergeSort(data,temp,0,data.length-1); QJ6f EV$~  
} =/f74s t  
X[Y #+z4  
private void mergeSort(int[] data, int[] temp, int l, int r) { `ITDTZ J  
int i, j, k; 34]%d<;A  
int mid = (l + r) / 2; _]Z$YM  
if (l == r) 1(D1}fcul  
return; q2D`1nT  
if ((mid - l) >= THRESHOLD) fVv$K&  
mergeSort(data, temp, l, mid);  aeQ{_SK  
else r6<ArX$Yl  
insertSort(data, l, mid - l + 1); DvU~%%(0^  
if ((r - mid) > THRESHOLD) W|)(|W  
mergeSort(data, temp, mid + 1, r); s>V*=#L  
else 6l=M;B7:i  
insertSort(data, mid + 1, r - mid); 1gL8$.B?  
vatx+)  
for (i = l; i <= mid; i++) { lTd+{TF.  
temp = data; t>=GVu^  
} a#>t+.dd  
for (j = 1; j <= r - mid; j++) { o^N%;d1%E  
temp[r - j + 1] = data[j + mid]; !fif8kf  
} Yr Preuh  
int a = temp[l]; R2'C s  
int b = temp[r]; g9! d pP  
for (i = l, j = r, k = l; k <= r; k++) { Lp~c  
if (a < b) { mn,=V[f  
data[k] = temp[i++]; #`2GAM];7  
a = temp; WodF -bE  
} else { l ,ZzB,"  
data[k] = temp[j--]; 69[w/\  
b = temp[j]; `z5v}T  
}  #=>kw^5  
} ye9QTK6$,  
} Pau&4h0  
VK"[=l  
/** dVK@Fgo  
* @param data zX006{vig  
* @param l Ebmqq#SHjX  
* @param i InTKdr^ P  
*/ 6S` ,j  
private void insertSort(int[] data, int start, int len) { HP1X\h!Ke  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); h%4 ~0  
} ^2(";.m  
} Yk x&6M@t  
} D}3cW2!9  
} wpJ^}+kF  
9LUP{(uq  
堆排序: qM+!f2t  
L+`}euu5  
package org.rut.util.algorithm.support; >7eu'  
47$-5k30  
import org.rut.util.algorithm.SortUtil; w4 >:uyE  
uBV^nUjS"m  
/** Bx_8@+  
* @author treeroot 1WZKQeOo  
* @since 2006-2-2 e /ppZ>  
* @version 1.0 X*D5y8<  
*/ *m2d#f  
public class HeapSort implements SortUtil.Sort{ ant-\w> }  
uugzIV)  
/* (non-Javadoc) 4?* `:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]*t*/j;N  
*/ _~(M A-l  
public void sort(int[] data) { j.e`ip  
MaxHeap h=new MaxHeap(); M]pel\{M  
h.init(data); 6-Vl#Lyb  
for(int i=0;i h.remove(); NiU tH  
System.arraycopy(h.queue,1,data,0,data.length); f^>lObvd  
} xf{C 'uF/  
cPa 0n4  
private static class MaxHeap{ mDe+ M {/  
fNmG`Ke  
void init(int[] data){ ;nHo%`Zt  
this.queue=new int[data.length+1]; xw/h~:NT  
for(int i=0;i queue[++size]=data; "J0Oa?  
fixUp(size); WL*W=(  
} p3'mJ3MA  
} 8EVF<@{]  
(D +{0 /  
private int size=0; "m\UqQGX  
8P'En+uE1|  
private int[] queue; -;DE&~p  
!ktA"Jx  
public int get() { %`<`z yf  
return queue[1]; Y+Q,4s  
} ~,3v<A[5Vi  
a#~Z5>{  
public void remove() { y("0Xve  
SortUtil.swap(queue,1,size--); n?KS]ar>  
fixDown(1); _tR.RAaa"  
} 4jZi62  
file://fixdown jd*%.FDi{  
private void fixDown(int k) { PxCl]~v  
int j; M,v@G$pW  
while ((j = k << 1) <= size) { 3K;b~xg`nw  
if (j < size %26amp;%26amp; queue[j] j++; @a7(*<".  
if (queue[k]>queue[j]) file://不用交换 k%4A::=  
break; qS[p|*BL  
SortUtil.swap(queue,j,k); Qe=Q8cT  
k = j; O (sFs1  
} 1x<rh\oo  
} =.=. \K  
private void fixUp(int k) { \]d*h]Hms  
while (k > 1) { b~jvmcr  
int j = k >> 1; Rc m(Y7  
if (queue[j]>queue[k]) "Jv,QTIcS  
break; I! eSJTN  
SortUtil.swap(queue,j,k); H:nu>pz t  
k = j; @|*Z0bn'  
} e7j]BzGvl  
} L)//- k9  
+#*z"a`  
} :J)l C =  
,Elga}7u  
} DF&jZ[##  
dXcMysRc%&  
SortUtil: N<i Vs  
VRN9yn2  
package org.rut.util.algorithm; /dP8F  
|LGNoP}SA  
import org.rut.util.algorithm.support.BubbleSort; p2_Zsq  
import org.rut.util.algorithm.support.HeapSort; MZ+IorZl  
import org.rut.util.algorithm.support.ImprovedMergeSort; '[ddE!ta  
import org.rut.util.algorithm.support.ImprovedQuickSort; <t|9`l_XW  
import org.rut.util.algorithm.support.InsertSort; 4uE5h~0Z  
import org.rut.util.algorithm.support.MergeSort; Q; /!oA_  
import org.rut.util.algorithm.support.QuickSort; V{^fH6;[  
import org.rut.util.algorithm.support.SelectionSort; !NY^(^   
import org.rut.util.algorithm.support.ShellSort; 5Vm}<8{  
QCY{D@7T  
/** So]FDd  
* @author treeroot 9+;f1nV  
* @since 2006-2-2 ^OcfM_4pN  
* @version 1.0 `"-!UkD+  
*/ "=RoI  
public class SortUtil { mUY:S |  
public final static int INSERT = 1; p<nBS" /  
public final static int BUBBLE = 2; "5DAGMU  
public final static int SELECTION = 3; LB ^^e"  
public final static int SHELL = 4; 71 m-W#zyA  
public final static int QUICK = 5; !Z2n;.w  
public final static int IMPROVED_QUICK = 6; V6!73 iY  
public final static int MERGE = 7; "aO,  
public final static int IMPROVED_MERGE = 8; KUqS(u  
public final static int HEAP = 9; )p_LkX(  
^~IcQ!j/5  
public static void sort(int[] data) { E@}j}/%'O  
sort(data, IMPROVED_QUICK); l8d%hQVqT  
} 7G=P|T\  
private static String[] name={ Da[X HUk  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L$kAe1 V^m  
}; v{*X@)$  
XGl13@=O  
private static Sort[] impl=new Sort[]{ x$b[m 20  
new InsertSort(), <`p'6n79  
new BubbleSort(), 4qXUk:C@m  
new SelectionSort(), +Y^F>/4=Y  
new ShellSort(), \gQ+@O&+  
new QuickSort(), l@F e(^5E  
new ImprovedQuickSort(), HNyDWD)_  
new MergeSort(), +rw3.d  
new ImprovedMergeSort(), nMvIL2:3  
new HeapSort() |.8=gS5  
}; =F-^RnO%\  
@"7dk.|  
public static String toString(int algorithm){ ~u& O  
return name[algorithm-1]; TUn@b11  
} 3E@&wpj  
% +"AF+c3r  
public static void sort(int[] data, int algorithm) { sO-R+G/^7  
impl[algorithm-1].sort(data); RtM.}wv;  
} kx(:Z8DX  
zate%y  
public static interface Sort { #_|^C(]!  
public void sort(int[] data); iDxgAV f*  
} @Odu.F1e  
qr;" K?NX  
public static void swap(int[] data, int i, int j) { M_)T=s *  
int temp = data; 5h7DVr!  
data = data[j]; m:7bynT{  
data[j] = temp; oh~Dbu=%  
} 3yX^R^`  
} %6:2cR  
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