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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。 wZb7 7  
插入排序: S?u@3PyJm  
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package org.rut.util.algorithm.support; qsHjqK@(  
:xZ^Jq91  
import org.rut.util.algorithm.SortUtil; {Z1^/F v3  
/** /=g$_m@yWI  
* @author treeroot "f4atuuXa  
* @since 2006-2-2 (tQ0-=z  
* @version 1.0 ]dL#k>$0q  
*/ a H *5(E]  
public class InsertSort implements SortUtil.Sort{ 1? Im"  
<CN+VXF  
/* (non-Javadoc) dPmNX-'7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lz=GA?lk[\  
*/ j'q Iq;y  
public void sort(int[] data) { 7i88iT  
int temp; 9Bi{X_.9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]::g-&%Um  
} N _|tw  
} hw 0u?++  
} kB=\a(  
d[y(u<Vl  
} 5^C.}/#>F  
H",q-.!  
冒泡排序: Mb'Tx  
;fZ9:WB  
package org.rut.util.algorithm.support; p~17cH4~-f  
JQH>{OB  
import org.rut.util.algorithm.SortUtil; =4804N7  
et}%E9  
/** i7foZ\btFc  
* @author treeroot 2Z7r ZjXW  
* @since 2006-2-2 /yFs$t >9  
* @version 1.0 66|$X,  
*/ C]NL9Gq`  
public class BubbleSort implements SortUtil.Sort{ |WsB0R  
tQ Ia6c4|  
/* (non-Javadoc) yc.9CTxx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 18o5Gs;yx  
*/ 'L8B"5|>  
public void sort(int[] data) { /7uA f{  
int temp; a G\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2)(ynrCe  
if(data[j] SortUtil.swap(data,j,j-1); Y *n[*N  
} ^'Qe.DW[  
} 52q<|MW%  
} D0LoT?$N  
} tlcNGPa  
5'S~PQka*  
} d< b,].  
*/y (~O6  
选择排序: .a7!*I#g  
j S<."a/n  
package org.rut.util.algorithm.support; WbGN 5?9Q  
@q+X:K5b  
import org.rut.util.algorithm.SortUtil; 1[4 0\sM  
PEPf=sm  
/** v-!^a_3Ui  
* @author treeroot ' ;3#t(J;  
* @since 2006-2-2 !b8.XGo  
* @version 1.0 Q[MWzsx  
*/ h9I vuv'  
public class SelectionSort implements SortUtil.Sort { v 6KRE3:V  
L<0eIw  
/* s|IC;C|  
* (non-Javadoc) Ms14]M[\  
* 4Bk9d\z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2dnyIgi  
*/ 'yNS(Bg=  
public void sort(int[] data) { Zx 5Ue#I  
int temp; t>JPK_b0  
for (int i = 0; i < data.length; i++) { `w EAU7m:  
int lowIndex = i; Z Z9D6+R  
for (int j = data.length - 1; j > i; j--) { 9;R'Xo=y  
if (data[j] < data[lowIndex]) { tWaM+W  
lowIndex = j; VQ^}f/A  
} >Qx :l#B  
} u:M)JG  
SortUtil.swap(data,i,lowIndex); bL0>ul"  
} ^n9)rsb  
} 90UZ\{">  
CZw]@2/JuQ  
} `XrF ,  
:EV*8{:aLU  
Shell排序: <CGABlZ  
zy'cf5k2  
package org.rut.util.algorithm.support; JXq l=/%  
>$G'=N:=X&  
import org.rut.util.algorithm.SortUtil; B3'-:  
xL$7bw5fY  
/** c|<E~_ .w@  
* @author treeroot f7?IXDQ>!  
* @since 2006-2-2 D2]i*gs  
* @version 1.0 dZ `c  
*/ _p;=]#+c&  
public class ShellSort implements SortUtil.Sort{ E~`l/ W  
,dXJCX8so  
/* (non-Javadoc) q}cm"lO$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )<[)7`  
*/ [^0 S#,L  
public void sort(int[] data) { pYz\GSd  
for(int i=data.length/2;i>2;i/=2){ N;R I A  
for(int j=0;j insertSort(data,j,i); T7?cnK"  
} 0[.T`tpN'  
} ^0HgE;4  
insertSort(data,0,1);  ,$(a,`s)  
} 2`U+ !  
<g1=jG:7k  
/** /q5!p0fH*  
* @param data ;}}k*< Z  
* @param j GS+Z(,J>=  
* @param i 74fE%;F  
*/ QE+HL8c^s  
private void insertSort(int[] data, int start, int inc) { L~{3W  
int temp; _*fOn@Vwo  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $L W8 vo7  
} I6Ga'5bV  
} W9:(P  
} GD0Q`gWNe  
p mUG`8SY  
} vbEO pYCS  
T!N v  
快速排序: jJyS^*.X  
)8%m|v#W  
package org.rut.util.algorithm.support; nd~O*-uYg  
/wU4^8Hz  
import org.rut.util.algorithm.SortUtil; M`p[ Zq  
 w\y)  
/** IsiBn(1Z  
* @author treeroot )`K!XX$%  
* @since 2006-2-2 @{U@?6eZ  
* @version 1.0 p(. z#o#  
*/ I R~szUY6  
public class QuickSort implements SortUtil.Sort{ QC6:ZxP  
LG;U?:\  
/* (non-Javadoc) B{!*OC{l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W~j>&PK,?  
*/ pvhN.z  
public void sort(int[] data) { '$5Qdaj  
quickSort(data,0,data.length-1); Xx1eSX  
} t&Jrchk  
private void quickSort(int[] data,int i,int j){ 7gE/g`"#  
int pivotIndex=(i+j)/2; c7A]\1 ~  
file://swap 3jjV bm  
SortUtil.swap(data,pivotIndex,j); y'C  
DLPg0>;jl  
int k=partition(data,i-1,j,data[j]); )6{,y{5!  
SortUtil.swap(data,k,j); x9\]C' *sO  
if((k-i)>1) quickSort(data,i,k-1); ={\9-JJhE  
if((j-k)>1) quickSort(data,k+1,j); 4 }NCdGD  
+}iuTqu5  
} b<j*;n.  
/** 5M\bH'1  
* @param data v]y=+* A  
* @param i y wmC>`0p  
* @param j [:8+ +#KD  
* @return s[#_sR`y  
*/ P c'\  
private int partition(int[] data, int l, int r,int pivot) { La$?/\Dv)  
do{ BMb0Pu 8  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g}$B4_sY  
SortUtil.swap(data,l,r); *g"X hk  
} oZ>2Tt%  
while(l SortUtil.swap(data,l,r); Rw^X5ByJE  
return l; (} wMU]!_  
} BG/RNem  
6iS7Hao"  
} HL%|DCo  
,L\>mGw  
改进后的快速排序: up2wkc8  
|!L0X@>  
package org.rut.util.algorithm.support; o]<J&<WM  
Dlg9PyQ  
import org.rut.util.algorithm.SortUtil; + S@[1 N  
!M}ZK(  
/** YL/B7^fd8  
* @author treeroot Hb\['VhzM  
* @since 2006-2-2 b1EY6'R2  
* @version 1.0 A`*Sx"~jdx  
*/ :@~mN7O*  
public class ImprovedQuickSort implements SortUtil.Sort { byPqPSY  
\?vn0;R4  
private static int MAX_STACK_SIZE=4096; P52qtN<  
private static int THRESHOLD=10; y>0Gmr  
/* (non-Javadoc) FiKGB\_]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Q$Dj!!1P  
*/ bzh:  
public void sort(int[] data) { )!Zm*(  
int[] stack=new int[MAX_STACK_SIZE]; 0zE(:K  
Iz8gZ:rd0  
int top=-1; 2E0oLl[  
int pivot; D~)bAPAD  
int pivotIndex,l,r; hVh,\d&2t  
D!mx&O9  
stack[++top]=0; f1q0*)fk  
stack[++top]=data.length-1; \7G.anY  
5% w08  
while(top>0){ \S>GtlQbn  
int j=stack[top--]; Va^(cnwa  
int i=stack[top--]; lT_dzO  
HqXS-TG  
pivotIndex=(i+j)/2; $V;0z~&!'  
pivot=data[pivotIndex]; _Zus4&'  
P?J\p J1|7  
SortUtil.swap(data,pivotIndex,j); ')ZZ)&U>z  
w[#*f?at~  
file://partition >3&9Wbv>  
l=i-1; `!<#'PR  
r=j; lQpl8>  
do{ D&1(qi=x&  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]xPy-j6C  
SortUtil.swap(data,l,r); !ezy  v`  
} Ks-$([_F   
while(l SortUtil.swap(data,l,r); zGa V^X  
SortUtil.swap(data,l,j); ,,;vG6^a  
 NG?g(  
if((l-i)>THRESHOLD){ T>w;M?`9K  
stack[++top]=i; 8Yf=)  
stack[++top]=l-1; uG(XbDZZ1W  
} EPU3Jban  
if((j-l)>THRESHOLD){ [0lO0ik>G  
stack[++top]=l+1; .:=5|0m  
stack[++top]=j; rN'}IS@5  
} \{= {{O  
w{ P l  
} >^D5D%"  
file://new InsertSort().sort(data); FY pspv?4  
insertSort(data); V^_U=Ed@M  
} #lF 2q w  
/** WTu!/J<\  
* @param data dte-2?%~j  
*/ Jt3*(+J>/  
private void insertSort(int[] data) { 8d(l)[GZt  
int temp; Dlz1"|SF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }j{Z &(K  
} "p[3^<~uQ  
} Y)7\h:LIg  
} 'q l<R0g  
$?u LFD  
} BOv^L?)*Z  
WQMoAPfqL  
归并排序: <4TF ]5  
b?:?"   
package org.rut.util.algorithm.support; G-'CjiMu  
izR#XeBm  
import org.rut.util.algorithm.SortUtil; nI/kX^Pd  
(+(bw4V/  
/** zEDN^K '  
* @author treeroot \zhCGDm1_  
* @since 2006-2-2 ;f /2u  
* @version 1.0 )*&61  
*/ NG: f>R  
public class MergeSort implements SortUtil.Sort{ f/U~X;  
(#+81 Dr  
/* (non-Javadoc) y w:=$e5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AI-ZZ6lzR  
*/ fJ+4H4K  
public void sort(int[] data) { ps33&  
int[] temp=new int[data.length]; Aa^w{D  
mergeSort(data,temp,0,data.length-1); 0@&/W-VXg  
} *vT Abk$   
tv5N wM  
private void mergeSort(int[] data,int[] temp,int l,int r){ wpt5'|I  
int mid=(l+r)/2; )lP(is FP  
if(l==r) return ; Z<'iT%6+r  
mergeSort(data,temp,l,mid); S$/SFB$)~W  
mergeSort(data,temp,mid+1,r); 60l!3o"p!  
for(int i=l;i<=r;i++){ MHS|gR.c  
temp=data; dRUmC H  
} H ahA} Q  
int i1=l; -/_hO$|W  
int i2=mid+1; le6eorK8  
for(int cur=l;cur<=r;cur++){ 0Z{u;FI  
if(i1==mid+1) DPfN*a-P(  
data[cur]=temp[i2++]; ,nJCqX~ /G  
else if(i2>r) $g\p)- aU  
data[cur]=temp[i1++]; /sSM<r]5j  
else if(temp[i1] data[cur]=temp[i1++]; @eYD@!  
else f6m h_l  
data[cur]=temp[i2++]; G<Urj+3/Xo  
} 3&R1C>JS ]  
} fONycXM]  
n>,? V3ly  
}  p4P"U  
f'Rq#b@  
改进后的归并排序: CIz_v.&:  
&UAYYH  
package org.rut.util.algorithm.support; Rb0{W]opt+  
**c"}S6:mC  
import org.rut.util.algorithm.SortUtil; dJ~Occ1~r  
xPJ @!ks9  
/** 10_>EY`  
* @author treeroot OX[r\  
* @since 2006-2-2 Ct$\!|aR  
* @version 1.0 D8`SI2 1P  
*/ Nj +^;Y  
public class ImprovedMergeSort implements SortUtil.Sort { DIgur}q)@  
A(z m  
private static final int THRESHOLD = 10; QiaBZAol  
ktM7L{Nz  
/* tUGF8?& G  
* (non-Javadoc) J\Tu=f)  
* w8F`RRHEE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TXqtE("BDl  
*/ !E^\)=E)P  
public void sort(int[] data) { @ ZN@EOM$+  
int[] temp=new int[data.length]; ycf)*0k  
mergeSort(data,temp,0,data.length-1); 2B+qS'OT  
} T%E/k# )q  
'@1C$0tx  
private void mergeSort(int[] data, int[] temp, int l, int r) { &td   
int i, j, k; f67t.6Vw2+  
int mid = (l + r) / 2; W)L*zVj~  
if (l == r) pz"}o#R"x  
return; - x;xQ  
if ((mid - l) >= THRESHOLD) n^<J@uC  
mergeSort(data, temp, l, mid); fM"&=X  
else :g{ybTSEe  
insertSort(data, l, mid - l + 1); >b8-v~o{  
if ((r - mid) > THRESHOLD) 0XI6gPo%  
mergeSort(data, temp, mid + 1, r); 9[[$5t`8  
else XJ1Bl  
insertSort(data, mid + 1, r - mid); ,M$h3B\;r  
FLIU}doc  
for (i = l; i <= mid; i++) { 'ZAIe7i&  
temp = data; T>, [V:  
} S$4 6YQ  
for (j = 1; j <= r - mid; j++) { PgsG*5WQ  
temp[r - j + 1] = data[j + mid]; 2_TFc2d  
} k&npC8oA  
int a = temp[l]; 3;AJp_;  
int b = temp[r]; I~nz~U:ak  
for (i = l, j = r, k = l; k <= r; k++) { Lzx2An@R  
if (a < b) { T&j:gg  
data[k] = temp[i++]; pk6<wAs*?#  
a = temp; 4h T!DS  
} else { cGlpJ)'-{  
data[k] = temp[j--]; 8YQ7XB  
b = temp[j]; `chD*@76I  
} =&m;5R  
} [EK@f,iM  
} 83VFBY2q  
5>hXqNjP2  
/** @QE&D+NS  
* @param data VFKFO9  
* @param l D58RHgY[  
* @param i 6_K7!?YG7  
*/ AB<%GzW0(  
private void insertSort(int[] data, int start, int len) { NHe[,nIV  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); a'O-0]g,  
} fnIF<Zt  
} c GyBml1  
} 8[#EC3  
} U[z2{\  
f<y3/jl4  
堆排序: a3,A_M}M'  
Hk$do`H-=Y  
package org.rut.util.algorithm.support; UK)wV  
Uy?X-"UR  
import org.rut.util.algorithm.SortUtil; 55=YM'5]  
&w:0ad|  
/** &ViK9  
* @author treeroot fZQ2<*)pqO  
* @since 2006-2-2 Z6&bUZF$bE  
* @version 1.0 cH707?p/I  
*/ Z:diM$Z?7  
public class HeapSort implements SortUtil.Sort{ d+"F(R9  
5Ha(i [d  
/* (non-Javadoc) V 7D<'!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *;Z a))  
*/ uUe#+[bD  
public void sort(int[] data) { =Z..&H5i  
MaxHeap h=new MaxHeap(); m= %KaRI  
h.init(data); +o35${  
for(int i=0;i h.remove(); !Z0S@]C  
System.arraycopy(h.queue,1,data,0,data.length); )S}.QrG  
} bGK-?BE5+A  
^ Z3y  
private static class MaxHeap{ &PX!'%X68h  
. HAFKB;  
void init(int[] data){ g"`jWSt7Q  
this.queue=new int[data.length+1]; 3N4kW[J2i  
for(int i=0;i queue[++size]=data; [WXcp1p  
fixUp(size); <RcB: h  
} -h=wLYl@0i  
} '@5 x=>  
5?|y%YH;R\  
private int size=0; %v UUx+  
8"rK  
private int[] queue; -![{Zb@  
V0n8fez b  
public int get() { $QwzL/a  
return queue[1]; O2xqNQ`d  
} ]hRs -x  
L @J$kqWY  
public void remove() { UJjtDV3@_g  
SortUtil.swap(queue,1,size--); JURg=r]LI  
fixDown(1); iF_u/#  
} Y oZd,} i  
file://fixdown C~PP}|<~V  
private void fixDown(int k) { %&J`mq  
int j; Z% ]LZ/O8  
while ((j = k << 1) <= size) { w^:@g~  
if (j < size %26amp;%26amp; queue[j] j++; 5i'KGL  
if (queue[k]>queue[j]) file://不用交换 "2 D{X  
break; h;mOfF  
SortUtil.swap(queue,j,k); '-#gQxIpD  
k = j; *z]P|_:&G  
} @6-3D/=  
} S_s;foT  
private void fixUp(int k) { L!fIAd`  
while (k > 1) { @Ph'!  
int j = k >> 1; ]qx!51S  
if (queue[j]>queue[k]) 4C3i  
break; u,~+ho@  
SortUtil.swap(queue,j,k); ^ '_Fd  
k = j; a(uQGyr[k1  
} ?OGs+G  
} IvI;Q0E-3  
Z/:W.*u  
} ?.ofs}  
;zSV~G6-  
} ebLt:gGo  
4$4Tx9C  
SortUtil: mS.!lkV  
Ds@K%f(.?w  
package org.rut.util.algorithm; B5_QH8kt7  
ssmJ?sl  
import org.rut.util.algorithm.support.BubbleSort; qj^A   
import org.rut.util.algorithm.support.HeapSort; cca]@Ox]  
import org.rut.util.algorithm.support.ImprovedMergeSort; ;a[3RqmKW  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1y eD-M"w  
import org.rut.util.algorithm.support.InsertSort; jU}  
import org.rut.util.algorithm.support.MergeSort; (1'sBm7F  
import org.rut.util.algorithm.support.QuickSort; r^Soqom3  
import org.rut.util.algorithm.support.SelectionSort; @@}muW>;T  
import org.rut.util.algorithm.support.ShellSort; K k^!P*#  
G#='*v OtO  
/** 6!){-IV  
* @author treeroot J+`gr_&  
* @since 2006-2-2 TC ;Aj|)N  
* @version 1.0 tq*{Hil>P`  
*/ ;cb='s  
public class SortUtil { BJqb'H jd  
public final static int INSERT = 1; }}wSns  
public final static int BUBBLE = 2; [mF=<G"  
public final static int SELECTION = 3; VotI5O $  
public final static int SHELL = 4; \;+b1  
public final static int QUICK = 5; (D+%*ax  
public final static int IMPROVED_QUICK = 6; #Zn+-Ih  
public final static int MERGE = 7; .SBN^fq  
public final static int IMPROVED_MERGE = 8; dhuIVBp!!e  
public final static int HEAP = 9; uuy0fQQ8ti  
- @KT#  
public static void sort(int[] data) { j92+kq>Xd  
sort(data, IMPROVED_QUICK); g}vU*g ;  
} wD@ wOC  
private static String[] name={ $:?=A5ttuo  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %F<3_#Y  
}; (e<p^T J]  
K81&BVx/  
private static Sort[] impl=new Sort[]{ W#^p%?8pR  
new InsertSort(), w_Z*X5u  
new BubbleSort(), s ZokiFJ  
new SelectionSort(), -Q1~lN m:  
new ShellSort(), d"+ _`d=`  
new QuickSort(), vY,]f^F"  
new ImprovedQuickSort(), Tn$| Xa+:s  
new MergeSort(), NE Z ]%  
new ImprovedMergeSort(), k7z{q/]M  
new HeapSort() x6|QTO  
}; ^{g+HFTA@  
|G)bnmi7  
public static String toString(int algorithm){ ;;LiZlf  
return name[algorithm-1]; aQ)g7C  
} *Oy%($'  
?[lKft  
public static void sort(int[] data, int algorithm) { -AKbXkc~\  
impl[algorithm-1].sort(data); o7g6*hJz  
} HGW;]8xl  
{dV!sQD  
public static interface Sort { >JN[5aus  
public void sort(int[] data); M5S<N_+Pe  
} ?QzN\f Y;  
~ o5h}OU"  
public static void swap(int[] data, int i, int j) { `]<~lf  
int temp = data; E8We2T[^M  
data = data[j]; |U="B4  
data[j] = temp; td2bL4  
} q -^Z=,<  
} }5"19 Go?  
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