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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。 g>2aIun_Q  
插入排序: hp bwZ  
G(U9rJ9  
package org.rut.util.algorithm.support; lLb:f6N  
@s_3 0+  
import org.rut.util.algorithm.SortUtil; ~Cjz29|gp  
/** q,[k7&HS  
* @author treeroot ?PBa'g  
* @since 2006-2-2 QGs1zfh*  
* @version 1.0 T>}0) s  
*/ Bk?8 zYp  
public class InsertSort implements SortUtil.Sort{ +hE',i.  
bA}AD`5  
/* (non-Javadoc) {Ge+O<mD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z]^+^c_  
*/ D Irgq|8  
public void sort(int[] data) { 96(R'^kNX  
int temp; QBy{| sQ`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R/^@cA  
} e]lJqC  
} ' |&>/dyq  
} "-w ^D!C  
#SKfE  
} Og,Y)a;=  
95=g Y  
冒泡排序: kOw=c Gt  
J,f/fPaf7  
package org.rut.util.algorithm.support; z{ptm7  
7;&(}  
import org.rut.util.algorithm.SortUtil; y|$R`P  
*)u?~r(F  
/** "\e:h| .G  
* @author treeroot $}t=RW  
* @since 2006-2-2 sLb8*fak  
* @version 1.0 cAD[3b[Gk  
*/ N_UQ  
public class BubbleSort implements SortUtil.Sort{ tAF]2VV(e  
\tY"BC4.  
/* (non-Javadoc) i+g~ Uj}h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,V,f2W 4  
*/ $@_{p*q  
public void sort(int[] data) { 4SgF,ac3r  
int temp; ?w-1:NW jt  
for(int i=0;i for(int j=data.length-1;j>i;j--){ I%oRvg|q  
if(data[j] SortUtil.swap(data,j,j-1); eP"`,<  
} XAe\s`  
} MDJc[am  
} (8.{+8o  
} j~bAbOX12  
iOXZ ]Xj5  
} i[\w%(83Fi  
r'/\HWNP  
选择排序: Hkdf$$\  
B`fH^N  
package org.rut.util.algorithm.support; 6^)rv-L~5y  
5F2_xH$5  
import org.rut.util.algorithm.SortUtil; *ZaaO^!  
GcT;e5D  
/** SxJ$b  
* @author treeroot l3.  
* @since 2006-2-2 iv*V#J>  
* @version 1.0 ;B~P>n}}_]  
*/ .u l 53 m  
public class SelectionSort implements SortUtil.Sort { +Mk#9 r  
}Z\wH*s`  
/* K UKACUL  
* (non-Javadoc) En(7(qP6}  
* B{C_hy-fw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^T:gb]i'Qa  
*/ O gmSQ  
public void sort(int[] data) { DECB*9O ^  
int temp; xACdZB(  
for (int i = 0; i < data.length; i++) { 7Y1GUIRa3  
int lowIndex = i; r`j Wp\z  
for (int j = data.length - 1; j > i; j--) { %Tv^GP{}  
if (data[j] < data[lowIndex]) { gY(1,+0-  
lowIndex = j; `0{ S3v  
} jfD1  
} WK0C  
SortUtil.swap(data,i,lowIndex); t V03+&jF  
} kZLMtj-   
} 4U=75!>  
Z<U>A   
} F30 ]  
 W^Y#pn  
Shell排序: mk!Dozb/  
lT'9u,6   
package org.rut.util.algorithm.support; |Y},V_@d  
sYqgXE.  
import org.rut.util.algorithm.SortUtil; *FK`&(B+}  
0w %[  
/** j(eFoZz,  
* @author treeroot P`S@n/}  
* @since 2006-2-2 &fwS{n;U  
* @version 1.0 glE^t6)  
*/ (CJ.BHu]  
public class ShellSort implements SortUtil.Sort{ tu0aD%C  
\}5p0.=  
/* (non-Javadoc) d,0 }VaY=D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PE"v*9k  
*/ Ya#h'+}  
public void sort(int[] data) { paW@\1Q  
for(int i=data.length/2;i>2;i/=2){ : =Kx/E:1  
for(int j=0;j insertSort(data,j,i); n((vY.NDV  
} $bvJTuw  
} ,lt8O.h-l  
insertSort(data,0,1); t 9^A(Vh"-  
} uLQ  
cK@jmGj+  
/** xyA-P& N  
* @param data /6K Il  
* @param j krB'9r<wa`  
* @param i ~6aCfbu%V  
*/ c+kU o$  
private void insertSort(int[] data, int start, int inc) { LOvHkk@+  
int temp; + H_WlYg-  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +*}{`L- :  
} ; A,#;%j  
} /KCPpERk{  
} Nc)J18  
6G AaV[])'  
} n6MM5h/#r  
QAPu<rdJP  
快速排序: . ]@=es  
2HD]?:Fk7  
package org.rut.util.algorithm.support; WG7k(Sp ]  
nV*y`.+  
import org.rut.util.algorithm.SortUtil; 9Q;c ,]  
.]x2K-Sf  
/**  d$W  
* @author treeroot -%CoWcGP  
* @since 2006-2-2 (:pq77  
* @version 1.0 5fJ[}~  
*/ 4)6xU4eBaL  
public class QuickSort implements SortUtil.Sort{ _[K"gu  
Dg HaOAdU  
/* (non-Javadoc) b'YE9E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b:J(b?  
*/ MZ> 6o5K|  
public void sort(int[] data) { FLZWZ;  
quickSort(data,0,data.length-1); S4CbyXW  
} ln!'_\{  
private void quickSort(int[] data,int i,int j){ crcA\lJf  
int pivotIndex=(i+j)/2; (u3s"I d  
file://swap "2?l{4T\  
SortUtil.swap(data,pivotIndex,j); 23!;}zHp  
o|BP$P8V  
int k=partition(data,i-1,j,data[j]); hm*cw[#O1x  
SortUtil.swap(data,k,j); 69K{+|  
if((k-i)>1) quickSort(data,i,k-1); ->^~KVh&  
if((j-k)>1) quickSort(data,k+1,j); N|g;W  
)~J>X{hy  
} kq=V4-a[  
/** FQz?3w&ia  
* @param data Kl{>jr8B3  
* @param i zSEs?  
* @param j `d]IX^;  
* @return cO2& VC  
*/ !4"^`ors$  
private int partition(int[] data, int l, int r,int pivot) { 4mjgt<`  
do{ Y-mK+1 2  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LhXUm  
SortUtil.swap(data,l,r); WLa!.v>  
} %+>s#Q2d  
while(l SortUtil.swap(data,l,r); "syh=BC v  
return l;  p?D2)(  
} <*!i$(gn  
U9y|>P\)T  
} JA)?p{j  
tR0pH8?e"  
改进后的快速排序: z4#(Ze@u~_  
!" #9<~Q,p  
package org.rut.util.algorithm.support; <h).fX  
PNOGN|D  
import org.rut.util.algorithm.SortUtil; "\W-f  
CT9   
/** 6lwta`2  
* @author treeroot ]uj=:@  
* @since 2006-2-2 &3F}6W6A  
* @version 1.0 OO dSKf8  
*/ L4u;|-znw  
public class ImprovedQuickSort implements SortUtil.Sort { aNn"X y\ k  
/M;#_+VK<  
private static int MAX_STACK_SIZE=4096; aI(7nJ=R  
private static int THRESHOLD=10; =<r8fXWZ  
/* (non-Javadoc) Migd(uw'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u 's`*T@.  
*/ kE8>dmH23  
public void sort(int[] data) { Wz4&7KYY  
int[] stack=new int[MAX_STACK_SIZE]; gWABY%!}  
v~3B:k:?l  
int top=-1; 3f " %G\  
int pivot; v2r&('pV  
int pivotIndex,l,r; UJfT!==U  
99$ 5`R;  
stack[++top]=0; Q|Y0,1eVp|  
stack[++top]=data.length-1; 7]xm2CHx5  
]M/9#mD9~  
while(top>0){ RIu~ @  
int j=stack[top--]; fkSO( C)  
int i=stack[top--]; 7cAXd#sI  
E:zF/$tG  
pivotIndex=(i+j)/2; -K,-h[ o  
pivot=data[pivotIndex]; ]<(]u#g_d  
Y2B &go  
SortUtil.swap(data,pivotIndex,j); S##1GOO  
\^(0B8|w  
file://partition SG}V[Glk  
l=i-1; Gb[`R}^dq  
r=j; ;6@r-r  
do{ Spo?i.#  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  ~ ~uAc_  
SortUtil.swap(data,l,r); ETp%s{8  
} y@2epY?{  
while(l SortUtil.swap(data,l,r); H>9CW<8  
SortUtil.swap(data,l,j); alh >"9~!  
`Y-|H;z  
if((l-i)>THRESHOLD){ $aHAv/&(5  
stack[++top]=i; -<jL~][S  
stack[++top]=l-1; Fhv/[j^X  
} J"=1/,AS  
if((j-l)>THRESHOLD){ } VJfJ/  
stack[++top]=l+1; J q{7R  
stack[++top]=j; xtPLR/Z  
} L9pvG(R%  
Go,N>HN  
} WN(ymcdYB  
file://new InsertSort().sort(data); 26X+ }^52  
insertSort(data); m)V/L]4  
} f\'{3I29  
/** }:0uo5 B7  
* @param data (feTk72XX  
*/ ?USQlnr:R/  
private void insertSort(int[] data) { G} eUL|S  
int temp; 8WE{5#oi  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p!]6ll^  
} ~~/xR s  
} ^c~)/F/cF  
} :o:e,WKxb  
%WqNiF0-  
} go+Q~NV   
UobyK3.%  
归并排序: H|cNH=  
pg]BsJN  
package org.rut.util.algorithm.support; ,-x!$VqS  
Z/rP"|EuQ  
import org.rut.util.algorithm.SortUtil; 1B),A~Ip  
tXJU vish  
/** y_xnai  
* @author treeroot 0]D0{6x8  
* @since 2006-2-2 8|E'>+ D_-  
* @version 1.0 \!]Ua.e<  
*/ BBcV9CGU  
public class MergeSort implements SortUtil.Sort{ LZMYr  
Z3[S]jC  
/* (non-Javadoc) Y#!h9F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4f(Kt,0  
*/ V\(:@0"  
public void sort(int[] data) { V]*b4nX7  
int[] temp=new int[data.length]; fgihy  
mergeSort(data,temp,0,data.length-1); ng:Q1Q9N  
} wts=[U`(  
:xKcpY[{  
private void mergeSort(int[] data,int[] temp,int l,int r){ + [Hh,I7  
int mid=(l+r)/2; g$dsd^{O7  
if(l==r) return ; ;3_l@dP"  
mergeSort(data,temp,l,mid); .z13 =yv  
mergeSort(data,temp,mid+1,r); O;7)Hjwt  
for(int i=l;i<=r;i++){ f|u#2!7  
temp=data; 7JSNYTH  
} eNiaM6(J  
int i1=l; jA#/Z  
int i2=mid+1; [r/k% <  
for(int cur=l;cur<=r;cur++){ FI"`DMb}  
if(i1==mid+1) Kscd}f)yx?  
data[cur]=temp[i2++]; "UwH\T4I  
else if(i2>r) czlFr|O;  
data[cur]=temp[i1++]; 1s1=rZ!  
else if(temp[i1] data[cur]=temp[i1++]; 5U_H>oD  
else 5SkW-+$  
data[cur]=temp[i2++]; 5>AX*]c  
} T{wuj[ Q#:  
} \M'-O YH_[  
)Ud-}* g  
} L@JOGCYy  
h*ZC*eV>  
改进后的归并排序: #07gd#j4  
3> /K0N|$  
package org.rut.util.algorithm.support; 5q "ON)x  
DWdW,xG  
import org.rut.util.algorithm.SortUtil; +l=r#JF  
mZ1)wH,  
/** Z,iHy3`  
* @author treeroot u1xSp<59C  
* @since 2006-2-2 G%d (  
* @version 1.0 ioPUUUb)  
*/ .f+TZDUO  
public class ImprovedMergeSort implements SortUtil.Sort { )E+'*e{cK  
%'0T Xr$  
private static final int THRESHOLD = 10; # p[',$cC  
ah~Y eJp  
/* uYrfm:4S  
* (non-Javadoc) MQin"\  
*  @3kKJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {}:ToIp  
*/ $['Bv  
public void sort(int[] data) { \=>H6x]q  
int[] temp=new int[data.length]; ^k<o T'89  
mergeSort(data,temp,0,data.length-1); %/updw#{B  
} LkQX?2>]  
| >z3E z  
private void mergeSort(int[] data, int[] temp, int l, int r) { ]~Y<o  
int i, j, k; T6ENtp  
int mid = (l + r) / 2; )?wJF<[_#  
if (l == r) ;2Q~0a|  
return; ws^4?O  
if ((mid - l) >= THRESHOLD) sUE?v9  
mergeSort(data, temp, l, mid); @?"h !fyu  
else KN-avu_Ix  
insertSort(data, l, mid - l + 1); mS0udHod  
if ((r - mid) > THRESHOLD) }`+B=h-dW  
mergeSort(data, temp, mid + 1, r); ``E/m<r:$  
else }<'5 z qS  
insertSort(data, mid + 1, r - mid); F5o+kz$;  
TwgrRtj'  
for (i = l; i <= mid; i++) { } (!EuLL  
temp = data; }%D^8>S  
} LY+|[qka  
for (j = 1; j <= r - mid; j++) { |*`Z*6n  
temp[r - j + 1] = data[j + mid]; VE8;sGaJ  
} 0@AAulRl  
int a = temp[l]; `=7j$#6U  
int b = temp[r]; ;j2vHU#q-  
for (i = l, j = r, k = l; k <= r; k++) { Qyy.IPTP  
if (a < b) { kY'T{Sm1^  
data[k] = temp[i++]; Li Kxq=K  
a = temp; }- Wa`t7U  
} else { "*})3['n  
data[k] = temp[j--];  rb{P :MX  
b = temp[j]; jbR0%X2  
} E\C9|1)  
} K(q-?n`<  
} *YlV-C<}W"  
>$2V%};  
/** "le>_Ze_>|  
* @param data 1IVuSp`{FU  
* @param l tY <Z'xA?  
* @param i VcoOeAKL  
*/ *_?dVhxf  
private void insertSort(int[] data, int start, int len) { 0:b2(^]bg  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); RVeEkv[qp  
} Gdg"gi!4  
} Ge<nxl<Bd  
} @]ao"ui@/  
} : "1XPr  
+o9":dl  
堆排序: ~,*b }O  
@'GGm#<   
package org.rut.util.algorithm.support; `:axzCrCfR  
\m1~jMz*>k  
import org.rut.util.algorithm.SortUtil; u,6~qQczE  
}3?n~s\)6f  
/** \_B[{e7z  
* @author treeroot %RDI!e<e}  
* @since 2006-2-2 {P*m;a`}  
* @version 1.0 h9eMcCU  
*/ 5ls6t{Ci  
public class HeapSort implements SortUtil.Sort{ -{ZWo:,r~q  
0tU.(  
/* (non-Javadoc) QV\eMuNy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ` Jdb;  
*/ ~s5SZK*  
public void sort(int[] data) { F+u|HiYG  
MaxHeap h=new MaxHeap(); ,{c?ymw?  
h.init(data); >;[*!<pfK5  
for(int i=0;i h.remove(); Phke`3tth  
System.arraycopy(h.queue,1,data,0,data.length); [Jv@J\  
} #t+d iR  
f%*/cpA)  
private static class MaxHeap{ 8]LD]h)B"  
Z4\=*ic@  
void init(int[] data){ w4gg@aO  
this.queue=new int[data.length+1]; |iwP:C^\mJ  
for(int i=0;i queue[++size]=data; _]:z \TDn  
fixUp(size); V5rS T +  
} KY~- ;0x  
} o>VVsH  
G["c\Xux  
private int size=0; w`5xrqt@  
s)pbS}L  
private int[] queue; Sm5H_m!  
' MxrQ;|S  
public int get() { ,S!azN=  
return queue[1]; O6OP =K!t:  
} F|!){=   
1@-Ns  
public void remove() { <%" b9T`'  
SortUtil.swap(queue,1,size--); hq #?kN  
fixDown(1); ?F3h)(}  
} G nG>7f[v  
file://fixdown qo|WXwP2  
private void fixDown(int k) { =y-@AU8  
int j; &Udb9  
while ((j = k << 1) <= size) { a0#J9O_  
if (j < size %26amp;%26amp; queue[j] j++; (I./ Uu%  
if (queue[k]>queue[j]) file://不用交换 }1upi=+ aE  
break; 1aTB%F  
SortUtil.swap(queue,j,k); :*KHx|Q  
k = j; <Sr  
} w.TuoWo>  
} N}t 2Nu-  
private void fixUp(int k) { \7'+h5a  
while (k > 1) { 0ik7v<:  
int j = k >> 1; 9_5ow  
if (queue[j]>queue[k]) |/)${*a4n  
break; KGFv"u{  
SortUtil.swap(queue,j,k); ;4pYK@9w_  
k = j; q0zr E5  
} sjV!5Z  
} n~V ]Z  
uu>Pkfo  
} @8I4[TE  
;N?]eM}yf  
} p|p l  
53n^3M,qK  
SortUtil: ;67x0)kn  
LBZ+GB  
package org.rut.util.algorithm; !/]WrGqbS  
|mw.qI|  
import org.rut.util.algorithm.support.BubbleSort; =UfsL%  
import org.rut.util.algorithm.support.HeapSort; W*I(f]8:y`  
import org.rut.util.algorithm.support.ImprovedMergeSort; ?o|f':  
import org.rut.util.algorithm.support.ImprovedQuickSort;  e0,|Wm  
import org.rut.util.algorithm.support.InsertSort; q}?4f *WC  
import org.rut.util.algorithm.support.MergeSort; ys kO  
import org.rut.util.algorithm.support.QuickSort; Z '7  
import org.rut.util.algorithm.support.SelectionSort; P`cq H(   
import org.rut.util.algorithm.support.ShellSort; ?BZPwGMs  
TtTj28 k7  
/** j=r P:#  
* @author treeroot @pRlxkvV  
* @since 2006-2-2 tu66'z  
* @version 1.0 *(T:,PY  
*/ /$p6'1P8  
public class SortUtil { R1$:~p2m  
public final static int INSERT = 1; m()RU"WY  
public final static int BUBBLE = 2; 2HsLc*9{4  
public final static int SELECTION = 3; ,tu.2VQc@  
public final static int SHELL = 4; |$ lM#Ua  
public final static int QUICK = 5; @X;!92i  
public final static int IMPROVED_QUICK = 6; /k,-P  
public final static int MERGE = 7; >E{";C)  
public final static int IMPROVED_MERGE = 8; /Y2}a<3&0  
public final static int HEAP = 9; U ^5Kz-5.  
_ =VqrK7T  
public static void sort(int[] data) { Lo N< oj5  
sort(data, IMPROVED_QUICK); T~##,qQ  
} DrY:9[LP  
private static String[] name={ ]Hefm?9*^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" j~jV'f.:H  
}; =*c7i]@}  
.7avpOfz  
private static Sort[] impl=new Sort[]{ A#J`;5!Sc  
new InsertSort(), lHPd"3HDK  
new BubbleSort(), f\sQO&  
new SelectionSort(), ]\hSI){  
new ShellSort(), dQA'($  
new QuickSort(), 9CWezI+  
new ImprovedQuickSort(), )9"_J9G  
new MergeSort(), r\-uJ~8N  
new ImprovedMergeSort(), b((M)Gz  
new HeapSort() {CGUL|y  
}; 2Ay* kmW  
>\P@^ h]  
public static String toString(int algorithm){ wc}5m Hs  
return name[algorithm-1]; %,@e^3B  
} zkuU5O  
eo?;`7  
public static void sort(int[] data, int algorithm) { o.!~8mD  
impl[algorithm-1].sort(data); 7` zHX&-W  
} ?IqQ-C)6D  
OuID%p"O  
public static interface Sort { ogHCt{'  
public void sort(int[] data); Tz8PSk1[  
} v50bdj9}k  
#mCL) [  
public static void swap(int[] data, int i, int j) { ~5%W:qwQ  
int temp = data; xqG[~)~  
data = data[j]; NflD/q/ L  
data[j] = temp; \F/hMXDlJ  
} x7!L{(E3  
} %\dz m-d(C  
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