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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。 4de:hE   
插入排序: mv{bX|.  
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package org.rut.util.algorithm.support;  va [r~  
928uGo5  
import org.rut.util.algorithm.SortUtil; ".7\>8A#a  
/** 8)ykXx/f@  
* @author treeroot mlO\wn-F  
* @since 2006-2-2 ?`/DFI'_G  
* @version 1.0 &e \UlM22  
*/ X.GK5Phd  
public class InsertSort implements SortUtil.Sort{ uZml.#@4  
IKVFbTX:y  
/* (non-Javadoc) O^~Z-; FA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E*"oA1/I  
*/ "O/ 6SV  
public void sort(int[] data) { 6 hiWgbE  
int temp; 6FkBb !ASk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #SX-Y)> 1@  
} O?$]/d  
} ?Q~o<%U7  
} IAi|4,y_L  
/@?lV!QiO  
} Fv-~v&  
\A 5Na-/9  
冒泡排序: o/hj~;(]  
ugzrG0=lx  
package org.rut.util.algorithm.support; uqvS  
ctMH5"F&1  
import org.rut.util.algorithm.SortUtil; WXQ+`OH7  
%+iAL<S  
/** \YPv pUg  
* @author treeroot {u[_^  
* @since 2006-2-2 PJL [En*  
* @version 1.0 7d^ ~.F  
*/ uK=)65]  
public class BubbleSort implements SortUtil.Sort{ s8  5l  
oc"7|YG  
/* (non-Javadoc) \DcO .`L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FGzn|I  
*/ X@ S~D7|ja  
public void sort(int[] data) { _t>[gB,  
int temp; l\WN  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^#!\VGnL  
if(data[j] SortUtil.swap(data,j,j-1); y& (pt!I  
} E1s~ +  
} vP%}XEF  
} 'Pe;Tp>`  
} no(or5UJ  
ldnKV&N  
} :3[;9xCHj  
 }=d}q *  
选择排序: k\X yR4r  
{ u3giB  
package org.rut.util.algorithm.support; \U>|^$4 #5  
G_`Ae%'h  
import org.rut.util.algorithm.SortUtil; ^B!()39R?  
_+OCI%=:  
/** Zi}j f25  
* @author treeroot 7/K L<T9@  
* @since 2006-2-2 "(mF5BE-E  
* @version 1.0 p,BoiYdi  
*/ <k 'zz:[c!  
public class SelectionSort implements SortUtil.Sort { 4BZ7R,m#.  
S1#5oy2  
/* c8Nl$|B  
* (non-Javadoc) 7c!#e=W@B  
* owx0J,,G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mFmxEv  
*/ w:ASB>,!  
public void sort(int[] data) { ZgfhNI\  
int temp; O1 !YHo  
for (int i = 0; i < data.length; i++) { n&2OfBJ  
int lowIndex = i; W5/|.}  
for (int j = data.length - 1; j > i; j--) { LIll@2[  
if (data[j] < data[lowIndex]) { F!g;}_s9  
lowIndex = j; &g~NkJc0c  
} LqLhZBU9  
} ZK h4:D  
SortUtil.swap(data,i,lowIndex); .,f]'!5  
} Z7I\\M  
} 5w%[|%KG:L  
VRTJKi  
} Wm4C(y@  
&Im-@rV!  
Shell排序: zt!7aVm n  
}tL]EW^  
package org.rut.util.algorithm.support; V -_MwII-  
$o/i / wcj  
import org.rut.util.algorithm.SortUtil; ~])Q[/=p  
U6.hH%\}@  
/** v'm-A d+4t  
* @author treeroot yxi&80$  
* @since 2006-2-2 @Z5,j)  
* @version 1.0 xXfv({  
*/ j`#H%2W\;  
public class ShellSort implements SortUtil.Sort{ %Fx ^"  
=@c;%x  
/* (non-Javadoc) Y;@]G=a   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w3#0kl  
*/ jOd+LXPJ  
public void sort(int[] data) { bB)$=7\  
for(int i=data.length/2;i>2;i/=2){ >7r%k,`  
for(int j=0;j insertSort(data,j,i); #/5eQTBD  
} <7! "8e  
} ,w f6gmh8  
insertSort(data,0,1); V.ETuS;  
} R@#xPv4o%  
eVd:C8q  
/** WcY$=\7  
* @param data P)Rq\1:  
* @param j Q.fUpa v  
* @param i Q5A,9ovNZ  
*/ G'`^U}9V\  
private void insertSort(int[] data, int start, int inc) { [930=rF*  
int temp; wYLodMaYH  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9z`72(  
} {y B0JL}n  
} ?vFtv}@\  
} eaDR-g"  
mDk6@Gd@U  
} {pdPp|YDZ-  
hl0\$  
快速排序: ;NQ}c"9  
'<QFf  
package org.rut.util.algorithm.support; o_BRsJy  
u}P:9u&h6X  
import org.rut.util.algorithm.SortUtil; dc0&*/`:  
^rd%{ 6m  
/** K{,'%|  
* @author treeroot Vl3-cW@p  
* @since 2006-2-2 z]KJ4  
* @version 1.0 X"9N<)C  
*/ *U}-Y*  
public class QuickSort implements SortUtil.Sort{ #U4 f9.FY*  
{|<yZ,,p  
/* (non-Javadoc) 7rYBFSp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =oM#]M'G+(  
*/ 'h^Ya?g  
public void sort(int[] data) { L)4~:f)B  
quickSort(data,0,data.length-1); Kz z/]  
} l-Ha*>gX[j  
private void quickSort(int[] data,int i,int j){ {{B'65Wu  
int pivotIndex=(i+j)/2; zhbSiw  
file://swap S}cR+d1}h  
SortUtil.swap(data,pivotIndex,j); ~2 nt33"  
SurreD<x  
int k=partition(data,i-1,j,data[j]); ?:&2iW7z  
SortUtil.swap(data,k,j); y4r?M8]"r  
if((k-i)>1) quickSort(data,i,k-1); (5CgC <  
if((j-k)>1) quickSort(data,k+1,j); 'nq~1 >i  
f96`n+>x i  
} |KZX_4   
/** +SE\c  
* @param data @.c[z D  
* @param i ?JTTl;  
* @param j [-i&)eX  
* @return P#Whh  
*/ 1k^$:'  
private int partition(int[] data, int l, int r,int pivot) { F|VKrH.  
do{ ?|pP&8r  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); jE=m4_Ntn  
SortUtil.swap(data,l,r); BsL+9lNue  
} @!j6y (@  
while(l SortUtil.swap(data,l,r); 8TG|frS  
return l; UG_ PrZd  
} h?$J;xn  
E 0l&d  
} x^ `IZ{!  
X @pm!c#  
改进后的快速排序: `.dwG3R  
Ujlbcv6+  
package org.rut.util.algorithm.support; 6!?] (  
Ekik_!aB  
import org.rut.util.algorithm.SortUtil; FFcIOn  
+'+ Nr<  
/** X y`2ux+>/  
* @author treeroot XR 3 dG:  
* @since 2006-2-2 >I<}:=   
* @version 1.0 KeB??1S  
*/ _sZ&=-FR  
public class ImprovedQuickSort implements SortUtil.Sort { ^FQn\,  
=,C]d~  
private static int MAX_STACK_SIZE=4096; ~kj96w4eAR  
private static int THRESHOLD=10; edCVIY'1  
/* (non-Javadoc) %IE;'aa }  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jKo9y  
*/ ; yE.R[I  
public void sort(int[] data) { H "5,To  
int[] stack=new int[MAX_STACK_SIZE]; o3eaNYa  
)MLbE-@  
int top=-1; ZHUW1:qs  
int pivot; /R?[/`)f&  
int pivotIndex,l,r; nP<u.{q L  
<L11s%5-  
stack[++top]=0; ~7PiIky.  
stack[++top]=data.length-1; }Y|M+0   
sa _J6~  
while(top>0){ MX?UmQ'  
int j=stack[top--]; AAW] Y#UwW  
int i=stack[top--]; s;E(51V<>  
W}"tf L8  
pivotIndex=(i+j)/2; y\(xYB>T  
pivot=data[pivotIndex]; e M5-v-  
n%G[Y^^,  
SortUtil.swap(data,pivotIndex,j); _Pa@%/  
\jV2":[% c  
file://partition 9<iM2(IW{  
l=i-1; 9;uH}j8sE  
r=j; ),y`Iw  
do{ 8~yP?#p  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); UjLq[,_!  
SortUtil.swap(data,l,r); :Ny[?jt c  
} LFqY2,#i  
while(l SortUtil.swap(data,l,r); evD=]iVD  
SortUtil.swap(data,l,j); !syyOfu`}  
H=*0KX{  
if((l-i)>THRESHOLD){ %Y0BPTt$  
stack[++top]=i; Nn-k hl|11  
stack[++top]=l-1; )4-!]NsV  
} `sIm&.d  
if((j-l)>THRESHOLD){  LAM{ ,?~  
stack[++top]=l+1; `B&=ya|bl  
stack[++top]=j; tZm`(2S  
} +5I'? _{V  
6v]`s  
} n7Bv~?DM  
file://new InsertSort().sort(data); mF!4*k  
insertSort(data); %Tu(>vnuj  
} Y~Vc|zM^(  
/** |pbetA4&  
* @param data kP/<S<h,g  
*/ &cTOrG  
private void insertSort(int[] data) { ?u;m ],w!  
int temp; f2pA+j5[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^c/3 !"wK  
} <gGO  
} b<#zgf  
} L[<Y6u>m!1  
BNA1"@9q  
} xdDe@G;"  
ZR0 OqSp]  
归并排序: Rq e|7/As  
@%*@Rar  
package org.rut.util.algorithm.support; n%RaEL  
,)!%^ ~v  
import org.rut.util.algorithm.SortUtil; ntB#2S  
;@Z1y  
/** lj8ficANo  
* @author treeroot S!x;w7j  
* @since 2006-2-2  W/u(9  
* @version 1.0 R >SZE"  
*/ T-GvPl9ZJw  
public class MergeSort implements SortUtil.Sort{ cTn (Tv9s  
VAjl?\}6  
/* (non-Javadoc) qmGHuQVe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AS:k&t  
*/ 0S4Y3bac&  
public void sort(int[] data) { p,|)qr:M  
int[] temp=new int[data.length]; @jjxgd'%&  
mergeSort(data,temp,0,data.length-1); 92R,o'#  
} }.U(Gxu$  
OC-d5P  
private void mergeSort(int[] data,int[] temp,int l,int r){ wu11)HFL|z  
int mid=(l+r)/2; 7J`v#  
if(l==r) return ; ;;rx)|\<R  
mergeSort(data,temp,l,mid); ^&y*=6C  
mergeSort(data,temp,mid+1,r); bivo7_  
for(int i=l;i<=r;i++){ J}4RJ9  
temp=data; &'i>d&  
} sa/9r9hc+  
int i1=l; 'rFLG+W  
int i2=mid+1; [+CFQf>  
for(int cur=l;cur<=r;cur++){ ]\>MDH  
if(i1==mid+1) l x0BKD?n  
data[cur]=temp[i2++]; 23K#9!3  
else if(i2>r) U HTxNK@}  
data[cur]=temp[i1++]; ]5:[6;wS  
else if(temp[i1] data[cur]=temp[i1++]; IG;= |  
else Oml3=TV  
data[cur]=temp[i2++]; {M=B5-  
} B-L@ 0gH  
} Q>;Aq!mr=  
oRcP4k;d=  
} %}-ogi/c  
V4CA*FEA  
改进后的归并排序: r4gLoHD)  
'Z,7{U1P  
package org.rut.util.algorithm.support; `('Up?  
Au/'|%2#(  
import org.rut.util.algorithm.SortUtil; \>EUa}%xn  
g2}aEfp!H  
/** v;g,qO!LJ  
* @author treeroot 8'fF{C  
* @since 2006-2-2 RtxAIMzh?  
* @version 1.0  ]SL+ZT  
*/ QkTU@T6>o  
public class ImprovedMergeSort implements SortUtil.Sort { j5[ >HL  
1|G5 W:  
private static final int THRESHOLD = 10; p14$XV  
k%-UW%  
/* H15!QxD#  
* (non-Javadoc) &`>dY /Y  
* p<Tg}fg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #a9R3-aP  
*/ \>w 2D  
public void sort(int[] data) { <; Td8O89_  
int[] temp=new int[data.length]; ?;(!(<{  
mergeSort(data,temp,0,data.length-1); 1GLb^:~A  
} kDE:KV<"c  
EL2z&  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2JeEmG9  
int i, j, k; [!} uj`e  
int mid = (l + r) / 2; B%))HLo'  
if (l == r) yTe25l{QaF  
return; fHI@' '0  
if ((mid - l) >= THRESHOLD) =M4wP3V/  
mergeSort(data, temp, l, mid); [5M!'  
else VzcW9'"#  
insertSort(data, l, mid - l + 1); /z)8k4  
if ((r - mid) > THRESHOLD) ,g|ht%"  
mergeSort(data, temp, mid + 1, r); eUgKwu;  
else  %\B?X;(  
insertSort(data, mid + 1, r - mid); 6/(Z*L"~6k  
<3=k  
for (i = l; i <= mid; i++) { )^ )|b5,  
temp = data; ;D4 bxz0ou  
} ~aL?{kb+  
for (j = 1; j <= r - mid; j++) { Hb^ovc0   
temp[r - j + 1] = data[j + mid]; {cw+kY]m4-  
} eR3MU]zF  
int a = temp[l]; +K;%sAZy  
int b = temp[r]; RzLeR%O  
for (i = l, j = r, k = l; k <= r; k++) { Z%r8oj\n  
if (a < b) { : 9zEne4  
data[k] = temp[i++]; k9\n='OI  
a = temp;  f|yq~3x)  
} else { 1'k,P;s  
data[k] = temp[j--]; /wHfc[b>  
b = temp[j]; S|IDFDn  
} =_2(S6~  
} N$Tzxs  
} (Fk&~/SP  
V0F1X s`  
/** _.,"`U; H  
* @param data ~%: TE}  
* @param l +]VW[ $W  
* @param i :?#wWF.  
*/ 0J= $ A  
private void insertSort(int[] data, int start, int len) { G#'G9/Tm  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *vzj(HGO  
} k.H4Mf(4  
} C\ cZ  
} zfGr1;  
} ]}_Ohe]X  
gGbqXG^  
堆排序: u)P)r,  
`M_w^&6+n  
package org.rut.util.algorithm.support; %9t=Iu*  
.8CfCRq  
import org.rut.util.algorithm.SortUtil; <<1_rRL]  
EixAmG  
/** f{D~ZC.*  
* @author treeroot kAoh#8=  
* @since 2006-2-2 *AYjMCo  
* @version 1.0 :Ui'x8yt  
*/ H<`7){iG  
public class HeapSort implements SortUtil.Sort{ M;@/697G  
o1<Z; 2#  
/* (non-Javadoc) Xkp`1UTH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Q,5Ne'o  
*/ *eUxarI  
public void sort(int[] data) { &+pp;1ls  
MaxHeap h=new MaxHeap(); ? ~_h3bHH  
h.init(data); Vvl8P|x.<  
for(int i=0;i h.remove(); byj7c(  
System.arraycopy(h.queue,1,data,0,data.length); YzAGhAyw  
} };8PPR)\y  
Ng1[y4R}  
private static class MaxHeap{ Z3A"GWY  
-/6Ms%O  
void init(int[] data){ 5 |oi*b  
this.queue=new int[data.length+1]; 5U JMiwP{  
for(int i=0;i queue[++size]=data; <d3N2  
fixUp(size); (_~Dyvo  
} "eKM<S  
} BH?fFe&J:`  
K%>3ev=y.s  
private int size=0; 1f5;^T I  
th|TwD&mO  
private int[] queue; ebB8.(k9G3  
YR68'Sft[  
public int get() { GG`;c?d@  
return queue[1]; =xHzhh  
} 7C^W<SUo  
'\B!1B>T  
public void remove() { `[.4SIah  
SortUtil.swap(queue,1,size--); o}lA\A  
fixDown(1); Ns`:=  
} yvKKE  
file://fixdown s!K9-qZl<  
private void fixDown(int k) { K9euNa  
int j; zzyD'n7D  
while ((j = k << 1) <= size) { !X/O1PM|  
if (j < size %26amp;%26amp; queue[j] j++; m9 f[nT  
if (queue[k]>queue[j]) file://不用交换 VaylbYUCT/  
break; I~U;M+n*y  
SortUtil.swap(queue,j,k); 14rX:z  
k = j; [c#?@S_  
} 5!^?H"#c  
} (W $>!1~  
private void fixUp(int k) { r1Cq8vD*m  
while (k > 1) { (C8r^m|A  
int j = k >> 1; $T}Dn[.  
if (queue[j]>queue[k]) % KmhR2v  
break; )u_[cEJHO  
SortUtil.swap(queue,j,k); CKRnkTTiV  
k = j; F%e5j9X`  
} FKu^{'Y6E0  
} /hbdQm  
Ng<oz*>U  
} H}&4#CQ'!  
TY *q[AWG  
} AG<TY<nqL  
W!WeYV}kb  
SortUtil: 1jQlwT(:  
eWAgYe2  
package org.rut.util.algorithm; BZWGXzOFh  
:jioF{,  
import org.rut.util.algorithm.support.BubbleSort; AoN |&o  
import org.rut.util.algorithm.support.HeapSort; ?$rH yI  
import org.rut.util.algorithm.support.ImprovedMergeSort; 7e`h,e=  
import org.rut.util.algorithm.support.ImprovedQuickSort; L k]/{t0  
import org.rut.util.algorithm.support.InsertSort; 0@PI=JZ%  
import org.rut.util.algorithm.support.MergeSort; fIg~[VN"  
import org.rut.util.algorithm.support.QuickSort; Av^<_`L :  
import org.rut.util.algorithm.support.SelectionSort;  k8ej.  
import org.rut.util.algorithm.support.ShellSort; p3z%Y$!Tm  
N"o+;yR  
/** @)p?!3{"  
* @author treeroot O_ /|Wx  
* @since 2006-2-2 ~l>2NY  
* @version 1.0 ,*'aH z  
*/ #`{L_n$c  
public class SortUtil { 9q f=P3  
public final static int INSERT = 1; - -H%FYF`  
public final static int BUBBLE = 2; :~+m9r  
public final static int SELECTION = 3; w?zY9Fs=s  
public final static int SHELL = 4; .LHzaeJCX  
public final static int QUICK = 5; Y]Y]"y$1  
public final static int IMPROVED_QUICK = 6; rpO>l  
public final static int MERGE = 7; nfzKUJY  
public final static int IMPROVED_MERGE = 8; Gf1O7L1rX  
public final static int HEAP = 9; DFFB:<  
{oc7Chv=/H  
public static void sort(int[] data) { 23=SXA!  
sort(data, IMPROVED_QUICK); ZpQ8KY$ 5  
} /A~+32 B  
private static String[] name={ LS4|$X4H`!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _q dLA  
}; 2 VGGSLr  
%G>V .d  
private static Sort[] impl=new Sort[]{ 8NzXe 7  
new InsertSort(), U/I+A|S[  
new BubbleSort(), y1 53ax  
new SelectionSort(), qJrMr4:F  
new ShellSort(), G@;I^_gN  
new QuickSort(), PFnq:G^L  
new ImprovedQuickSort(), ;Q} H'Wg,  
new MergeSort(), 4 Gm(P~N  
new ImprovedMergeSort(), N: Zf4  
new HeapSort() gR:21*&cz  
}; |Zrkk>GW:  
R~&i8n.  
public static String toString(int algorithm){ d8Kxtg Y  
return name[algorithm-1]; =C.WM*='  
} =3Hv  
Um'r6ty  
public static void sort(int[] data, int algorithm) { !4l\*L  
impl[algorithm-1].sort(data); ``4lomz>  
} xg2 &  
Jf=$h20x  
public static interface Sort { CuD^@  
public void sort(int[] data); GBsM?A:  
} tug\X  
*X4$'LSx1  
public static void swap(int[] data, int i, int j) { &k2nt  
int temp = data; znl_~:.4]X  
data = data[j]; Tx'ctd#Y  
data[j] = temp; >ey- j\_v  
} !,3U_!  
} ^  M4-O~  
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