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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。 7niZ`doBA  
插入排序: ;]c@%LX  
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package org.rut.util.algorithm.support; IlN: NS  
xe?!UCUb@  
import org.rut.util.algorithm.SortUtil; /2 z, ?,jL  
/** ~ +DPq|-O  
* @author treeroot Y\s ge  
* @since 2006-2-2 XzLB#0  
* @version 1.0 h|~I'M]*  
*/ "[h9hoN  
public class InsertSort implements SortUtil.Sort{ TL u+5f  
NzS(, F  
/* (non-Javadoc) N)yCGo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iW u  
*/ PgOOFRwP  
public void sort(int[] data) { k7,   
int temp; (U@Ks )  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PU8>.9x  
} RvQa&r5l  
} fh%|6k?#M  
} ri.}G  
9-:\ NH^;  
} [G!#y  
ya3k;j2C  
冒泡排序: CcCcuxtR  
@!'rsPrI  
package org.rut.util.algorithm.support; zTBf.A;e7  
P{m(.EC_  
import org.rut.util.algorithm.SortUtil; L(RI4d  
j!c~%hP  
/** ?Vre" 6U  
* @author treeroot =D~>$ Y  
* @since 2006-2-2 76oJCNY  
* @version 1.0 7l(GBr  
*/ px${ "K<  
public class BubbleSort implements SortUtil.Sort{ 52,[dP,g  
k\76`!B  
/* (non-Javadoc) gwGw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c-VIpA1  
*/ ;cEoc(<?  
public void sort(int[] data) { 0u) m9eg  
int temp; /@w w"dmqU  
for(int i=0;i for(int j=data.length-1;j>i;j--){ q-hREO  
if(data[j] SortUtil.swap(data,j,j-1); J?C#'2 /   
} C'7DG\pr  
} !!k^M"e2  
} Gf=3h4  
} emSky-{$u  
FUVp}>#U  
} i 558&:  
S=<OS2W7+r  
选择排序: oGRd ;hsF  
E1j3c :2  
package org.rut.util.algorithm.support; 9-+N;g!q  
\ )WS^KR%  
import org.rut.util.algorithm.SortUtil;  ;kzjx%h  
uv=a}U;  
/** bj6;>Ezp3(  
* @author treeroot  j iejs*  
* @since 2006-2-2 D7r&z?  
* @version 1.0 eDsB.^|l  
*/ Vk> &  
public class SelectionSort implements SortUtil.Sort { ?W>`skQ  
,j6 R/sg  
/* A$M8w9  
* (non-Javadoc) U8.V Rn  
* P;`Awp?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '}^qz#w   
*/ zpD?5  
public void sort(int[] data) { +MZI\>  
int temp; 7B<,nKd  
for (int i = 0; i < data.length; i++) { '&+]85_&$  
int lowIndex = i; IH&0>a  
for (int j = data.length - 1; j > i; j--) { !w}b}+]GB  
if (data[j] < data[lowIndex]) { n2 can  
lowIndex = j; >F>VlRg  
} boI&q>-6Re  
} "O'c.v?{x  
SortUtil.swap(data,i,lowIndex); UZdGV?o ?  
} HSWki';G  
} 80=LT-%#  
1>uAVPa  
} LZb<-vK"y  
HC} vO0X4  
Shell排序: \%&A? D  
vV xw*\`<6  
package org.rut.util.algorithm.support; oI!"F=?&6  
}h sNsQ   
import org.rut.util.algorithm.SortUtil; E~#G_opQA  
] s^7c  
/** Rc:}%a%e  
* @author treeroot BT&R:_:  
* @since 2006-2-2 "F}dZ  
* @version 1.0 u]Q}jqiq"  
*/ ]ag{sU@#  
public class ShellSort implements SortUtil.Sort{ 'pT13RFD  
tfe]=_U  
/* (non-Javadoc) c9G%;U)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZY8w1:'  
*/ !uoT8BBAk  
public void sort(int[] data) { qTK(sW  
for(int i=data.length/2;i>2;i/=2){ `<|tC#<z  
for(int j=0;j insertSort(data,j,i); M(nzJ  
} ilde<!?  
} (6B;  
insertSort(data,0,1); ;<q 2  
} Y6&v&dA;  
uJCp  
/** 2GORGS%  
* @param data "0uM%*2  
* @param j ?_FL 'G  
* @param i 6lCpf1>6@  
*/ PDPK|FU  
private void insertSort(int[] data, int start, int inc) { :o' |%JE  
int temp; [.^ol6  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);  [Q{\Ik  
} @"` }%-b  
} u4IK7[=  
} V]; i$  
%'ah,2a%  
} MOK}:^bSu  
F{;#\Ob  
快速排序: }3A~ek#*~  
n<bU'n  
package org.rut.util.algorithm.support; "d:rPJT)(@  
z?<B@\~  
import org.rut.util.algorithm.SortUtil; F$DA/{.D  
QK?V^E  
/** t$(#$Z,RS  
* @author treeroot  NdRcA  
* @since 2006-2-2 { PX&#,_  
* @version 1.0 e,epKtL  
*/ }< H>9iJ:  
public class QuickSort implements SortUtil.Sort{ >STthPO  
&muBSQ-  
/* (non-Javadoc) /M%>M]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IK\~0L;ozE  
*/ a51e~mg Z`  
public void sort(int[] data) { m{Vd3{H40  
quickSort(data,0,data.length-1); aSvv(iV  
} pe vXixl  
private void quickSort(int[] data,int i,int j){ QZ l#^-on  
int pivotIndex=(i+j)/2; )][U6e  
file://swap : c~SH/qS  
SortUtil.swap(data,pivotIndex,j); zawu(3?~)5  
R1X'}#mU  
int k=partition(data,i-1,j,data[j]); +Q u.86dH  
SortUtil.swap(data,k,j); 9^W7i]-Z  
if((k-i)>1) quickSort(data,i,k-1); 9 Gd6/2  
if((j-k)>1) quickSort(data,k+1,j); ~jL%l  
ySr,HXz  
} (O{OQk;CF  
/** #vBrRHuA#"  
* @param data 86OrJdD8  
* @param i kScZ P8yw  
* @param j >O?WRC B  
* @return u-t=M]  
*/ w\acgQ^%e  
private int partition(int[] data, int l, int r,int pivot) { OW@%H;b  
do{ 4W" A*A  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :oZ<[#p"*  
SortUtil.swap(data,l,r); BQ0?B*yqd  
} QcL@3QC  
while(l SortUtil.swap(data,l,r); @v%Kwe1Q  
return l; rP4T;Clout  
} t`z"=S  
iSCkV2  
} 6^gp /{  
gS~H1Ro  
改进后的快速排序: =@Oo3*>  
;stuTj@vH  
package org.rut.util.algorithm.support; +a!3*G@N+  
 Y${'  
import org.rut.util.algorithm.SortUtil; euB1}M  
DzGUKJh6  
/** @ !P2f   
* @author treeroot R xMsP;be  
* @since 2006-2-2 G1z*e.+y  
* @version 1.0 @3?>[R  
*/ Q]K` p(  
public class ImprovedQuickSort implements SortUtil.Sort { ZRxOXt&;  
gTho:;q7a  
private static int MAX_STACK_SIZE=4096; l1 Kv`v\  
private static int THRESHOLD=10; F-/z@tM  
/* (non-Javadoc) lD,2])>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o^@"eG$,  
*/ KrpIH6  
public void sort(int[] data) { h9Far8}  
int[] stack=new int[MAX_STACK_SIZE]; '0D$C},^|8  
`DY yK?R  
int top=-1; ]lC%HlID  
int pivot; m8fj\,X  
int pivotIndex,l,r; ^Gk`n  
EH |+S  
stack[++top]=0; oN1D&*  
stack[++top]=data.length-1; N[/<xW~x?4  
Ks%0!X?3q  
while(top>0){ 3IMvtg  
int j=stack[top--]; )aIcA  
int i=stack[top--]; ^o3,YH  
bCw{9El!K4  
pivotIndex=(i+j)/2; L0g+RohW  
pivot=data[pivotIndex]; GY]P(NU  
(GmBv  
SortUtil.swap(data,pivotIndex,j); kZw"a*6  
7_\sx7h{3  
file://partition -%` ~3*L  
l=i-1; <VxA&bb7c  
r=j; &42 ]#B"*  
do{ O@Aazc5K  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6iU&9Z<%  
SortUtil.swap(data,l,r); Ljy797{f  
} ps{4_V-3u  
while(l SortUtil.swap(data,l,r); LIID(s!bX  
SortUtil.swap(data,l,j); arL>{mj  
K3!3[dR*  
if((l-i)>THRESHOLD){ c< $<n  
stack[++top]=i; Ms!EK  
stack[++top]=l-1; TWRP|i!i  
} M|DMoi8x  
if((j-l)>THRESHOLD){ VExhN';  
stack[++top]=l+1; ZE=sw}=  
stack[++top]=j; D^[l~K  
} /I7V\  
%OBW/Ti  
} xk,Uf,,>  
file://new InsertSort().sort(data); ZsP^<  
insertSort(data); layxtECP(  
} !eyLh&]5  
/** |A3"Jc.2o  
* @param data ahl|N`  
*/ l?m"o-Gp3  
private void insertSort(int[] data) { c-$rB_t+  
int temp; %%No XW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,XT,t[w  
} ^)dsi  
}  ew1L+  
} 8:TX9`,  
hV7EjQp  
} }3*<sxw7<  
KTm^}')C8  
归并排序: `LkrG9KV{  
bbC@  
package org.rut.util.algorithm.support; -gs I:-Xo  
u2#q7}  
import org.rut.util.algorithm.SortUtil; ~-'2jb*8  
M1Q&)am  
/** 5=TgOS]R  
* @author treeroot +p\E%<uQ  
* @since 2006-2-2 j e\!0{  
* @version 1.0 L~ &S<5?  
*/ 1clzDwW  
public class MergeSort implements SortUtil.Sort{ Mk*4J]PP  
q2%cLbI F  
/* (non-Javadoc) x]7:MG$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wet0qt]  
*/ #*A&jo'E  
public void sort(int[] data) { =Z+^n ?"  
int[] temp=new int[data.length]; b~^'P   
mergeSort(data,temp,0,data.length-1); IOFXkpK R  
} ^(;x-d3  
mP^B2"|q  
private void mergeSort(int[] data,int[] temp,int l,int r){ 8#QT[H 4F  
int mid=(l+r)/2; ;2kQ)Bq"  
if(l==r) return ; u(Mbp$R' ?  
mergeSort(data,temp,l,mid); +C`!4v\n  
mergeSort(data,temp,mid+1,r); 0N1t.3U  
for(int i=l;i<=r;i++){ &eV5#Ph  
temp=data; ]>~.U ~  
} ?c8~VQaQ  
int i1=l; *9n[ #2sM<  
int i2=mid+1; %E%=Za  
for(int cur=l;cur<=r;cur++){ [],[LkS  
if(i1==mid+1) Qy:yz  
data[cur]=temp[i2++]; URVW5c  
else if(i2>r) @JSWqi>  
data[cur]=temp[i1++]; /o4_rzR?  
else if(temp[i1] data[cur]=temp[i1++]; HK[%'OQ  
else s $(%]~P  
data[cur]=temp[i2++]; gNr4oOR{  
} 4<s;xSCL  
} OXLB{|hH80  
4b}p[9k  
} IEm?'o:  
Cx;it/8+  
改进后的归并排序: Z*Ffdh>*:&  
jO"/5 x26  
package org.rut.util.algorithm.support; -, +o*BP  
*l d)nH{  
import org.rut.util.algorithm.SortUtil; ta&z lZt  
I e!KIU  
/** 6ud?US(  
* @author treeroot moM'RO,M  
* @since 2006-2-2 xDe^>(,"  
* @version 1.0 p cD}SY  
*/ y6am(ugE  
public class ImprovedMergeSort implements SortUtil.Sort { <w&'E6mU  
YEV;GFI1  
private static final int THRESHOLD = 10; J|xXo  
N_D=j 6B  
/* ;R >>,&g  
* (non-Javadoc) jYU0zGpj  
* p YCMJK-H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T72Li"00  
*/ |%4nU#GoB  
public void sort(int[] data) { tDAX pi(  
int[] temp=new int[data.length]; ~RLjL"  
mergeSort(data,temp,0,data.length-1); PM*lnd#J  
} nkq{_;xp  
>a@1y8B  
private void mergeSort(int[] data, int[] temp, int l, int r) { Z+R-}<   
int i, j, k; U;&s=M0[  
int mid = (l + r) / 2; "=?JIQ  
if (l == r) H|s Iw:  
return; 0lt1/PEKx2  
if ((mid - l) >= THRESHOLD) SFWS<H(IN  
mergeSort(data, temp, l, mid); 7<jr0)  
else 3 } $9./+  
insertSort(data, l, mid - l + 1); 3Mh_ &%!O  
if ((r - mid) > THRESHOLD) @bkSA  
mergeSort(data, temp, mid + 1, r); {w>ofyqfp&  
else Uwiy@ T Z  
insertSort(data, mid + 1, r - mid); bAY >o  
uF,%N   
for (i = l; i <= mid; i++) { _z^&zuO  
temp = data; #SLi v  
} =w7k@[Bq  
for (j = 1; j <= r - mid; j++) { Wi)N/^;n  
temp[r - j + 1] = data[j + mid]; N}bZdE9F  
} #I yM`YB0  
int a = temp[l]; 4>=Y@z  
int b = temp[r]; 1\f8-:C  
for (i = l, j = r, k = l; k <= r; k++) { NnZ_x>R  
if (a < b) { "(F:'J} X  
data[k] = temp[i++]; bxz6 >>  
a = temp; TAM`i3{D  
} else { ;f3))x  
data[k] = temp[j--]; wu0J XB%&^  
b = temp[j]; '\7&Iz:%  
} 1p>&j%dk  
} T7G{)wm  
} "'8o8g  
UJX5}36  
/** 4pu>f.  
* @param data 9hwn,=Vh)  
* @param l ">I50#bT  
* @param i `Oi6o[a  
*/ `4]-B@ 7_  
private void insertSort(int[] data, int start, int len) { Xo4K!U>TzZ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =dC5q{  
} %}~Ncn_r  
} `WU"*HqW  
} [k +fkr]  
} V,9UOC,Gn  
o@\q6xl.  
堆排序: k3"Y!Uha:  
wmS:*U2sc  
package org.rut.util.algorithm.support; Y1F P |  
nIP*yb}5  
import org.rut.util.algorithm.SortUtil; +Y^/0=6h  
~_L_un.R  
/** Jqi^Z*PuX  
* @author treeroot T*C]:=)  
* @since 2006-2-2 HQ8;d9cGir  
* @version 1.0 2}R)0][W  
*/ FZtIC77X5  
public class HeapSort implements SortUtil.Sort{ 3m`y?Dd  
yX8$LOjE  
/* (non-Javadoc) VJ(#FA2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H]W59-{a  
*/ [<{+tAdn)  
public void sort(int[] data) { {7X80KI  
MaxHeap h=new MaxHeap(); ugt|'i  
h.init(data); NvfQa6?;  
for(int i=0;i h.remove(); 6ax|EMw  
System.arraycopy(h.queue,1,data,0,data.length); S(*SUH  
} pEE.%U  
&P{[22dQ  
private static class MaxHeap{ _gF )aE  
Dos`lh  
void init(int[] data){ pTJJ.#$CEF  
this.queue=new int[data.length+1]; {)0"?$C_H  
for(int i=0;i queue[++size]=data; t1YVE%`w  
fixUp(size); 3v%V\kO=F  
} ] T! >]  
} W`-AN}C#  
mMvt#+O  
private int size=0; l;SqjkN  
h~ =UFE%'  
private int[] queue; Wf=D'6w  
x;Jy-hMNl  
public int get() { AA um1xl  
return queue[1]; _0<EbJ8Z  
} XaV h.  
X)|b_3Z  
public void remove() { 3R[5prE<  
SortUtil.swap(queue,1,size--); n15F4DnP  
fixDown(1); ]QS? fs Z  
} f6ad@2  
file://fixdown xCMcS~ 3/  
private void fixDown(int k) { ayJKt03\O\  
int j; RS~jHwIh  
while ((j = k << 1) <= size) { gI qYIt  
if (j < size %26amp;%26amp; queue[j] j++; bCF"4KXK  
if (queue[k]>queue[j]) file://不用交换 c?{&=,u2  
break; VMUK|pC4 K  
SortUtil.swap(queue,j,k); v'*#P7%Kf  
k = j; S& % G B  
} N4Z%8:"pj  
} lmZ Ssx  
private void fixUp(int k) { 9air" 4  
while (k > 1) { gD0 FRKn  
int j = k >> 1; :Uf\r `a9  
if (queue[j]>queue[k]) %11&8Fp1s  
break; ;5A  
SortUtil.swap(queue,j,k); s HSZIkB-r  
k = j; Ms.1RCup  
} wG4=[d  
} HgP9evz,0  
PYYOC"$  
} y8uB>z+#+;  
`Pv[A  
} Cyg\FHs  
cWSiJr):r  
SortUtil: pDO&I]S`q0  
vlAYKtl3]  
package org.rut.util.algorithm; q"@Y2lhD!  
`w1|(Sk$h  
import org.rut.util.algorithm.support.BubbleSort; -9)<[>:  
import org.rut.util.algorithm.support.HeapSort; 7yLO<o?9w  
import org.rut.util.algorithm.support.ImprovedMergeSort; :4PK4D s7  
import org.rut.util.algorithm.support.ImprovedQuickSort; y|1,h}H^n  
import org.rut.util.algorithm.support.InsertSort; A"8` 5qa  
import org.rut.util.algorithm.support.MergeSort; SyFO f  
import org.rut.util.algorithm.support.QuickSort; sG`:mc~0   
import org.rut.util.algorithm.support.SelectionSort; E`3yf9"  
import org.rut.util.algorithm.support.ShellSort; 4i>sOP3 B  
j'#M'W3@  
/** | -l)$i@  
* @author treeroot st"uD\L1p:  
* @since 2006-2-2 /l-lkG5  
* @version 1.0 ]42bd  
*/ ?+)O4?#  
public class SortUtil { sBGYgBu!a  
public final static int INSERT = 1; I6d4<#Q@L  
public final static int BUBBLE = 2; sf\p>gb  
public final static int SELECTION = 3; 6vySOVMj  
public final static int SHELL = 4; 8y5iT?.~vy  
public final static int QUICK = 5; E^a He  
public final static int IMPROVED_QUICK = 6; _Gv[ D  
public final static int MERGE = 7; pZ?7'+u$L  
public final static int IMPROVED_MERGE = 8; <RfPd+</  
public final static int HEAP = 9; ^W|B Xxo  
E?1"&D m  
public static void sort(int[] data) { 5|>FM&  
sort(data, IMPROVED_QUICK); 1Uzsw  
} e"9 u}-Q@  
private static String[] name={ eHUr!zH:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" al<[iZ  
}; Fdsaf[3[v  
SXfuPM  
private static Sort[] impl=new Sort[]{ GMqeC  
new InsertSort(), /g}2QmvH  
new BubbleSort(), tJ>|t hk  
new SelectionSort(), gPs%v`y)*D  
new ShellSort(), :td#zM  
new QuickSort(), by z2u  
new ImprovedQuickSort(), VPG+]> *  
new MergeSort(), d7 )&Z:  
new ImprovedMergeSort(), ]PQ] f*Ik>  
new HeapSort() Y0`@$d&n  
}; gFR9!=,/V%  
wLyQ <[$  
public static String toString(int algorithm){ 4FK|y&p4r  
return name[algorithm-1]; WqX#T  
} tHlKo0S$0  
NV 6kj=r  
public static void sort(int[] data, int algorithm) { 6[g~p< 8n}  
impl[algorithm-1].sort(data); /5 rWcX  
} DA'A-C2  
[C)JI;\  
public static interface Sort { ~Q7)6%  
public void sort(int[] data); (#6E{@eq  
} |3\$\qa  
MRzrZZ%LQ  
public static void swap(int[] data, int i, int j) { W\xM$#)m  
int temp = data; H"hL+F^  
data = data[j]; d4@\5<  
data[j] = temp; V_Owi5h  
} uYW9kw>$  
} !FwR7`i  
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