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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。 fgj$ u  
插入排序: ulW>8bW&  
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package org.rut.util.algorithm.support; ^ swj!da  
9)S3{i6w  
import org.rut.util.algorithm.SortUtil; x"C7NW[$  
/** =8`KGeP$  
* @author treeroot gfIS  
* @since 2006-2-2 Da8gOZ  
* @version 1.0 ?0KIM* .  
*/ t>N2K-8Qh  
public class InsertSort implements SortUtil.Sort{ _ {#K  
]9w8[T:O  
/* (non-Javadoc) }ff^^7_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wN%lc3[/z2  
*/ '-N 5F  
public void sort(int[] data) { #T>?g5I  
int temp; O>nMeU  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t,/8U  
} P`Now7! GW  
} cU ?F D  
} rA?< \*  
y5aPs z  
} _U4@W+lhX_  
:8/ 6dx@Y(  
冒泡排序: DHeZi3&i  
k+"7hf=C|  
package org.rut.util.algorithm.support; FF^h(Ea  
WH39=)D%u  
import org.rut.util.algorithm.SortUtil; y!x[N!a  
5+oY c-  
/** WW6-oQs_#*  
* @author treeroot $]};EI#  
* @since 2006-2-2 [$d]U.  
* @version 1.0 (b[=~Nh'  
*/ 9__Q-J  
public class BubbleSort implements SortUtil.Sort{ 3[_WTwX0  
r 9M3rj]  
/* (non-Javadoc) v_U/0 0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "m6G;cv  
*/ \zk>cQ  
public void sort(int[] data) { 8mdVh\i!Kf  
int temp; 8|\ -(:v  
for(int i=0;i for(int j=data.length-1;j>i;j--){ qn{9vr  
if(data[j] SortUtil.swap(data,j,j-1); Dcs O~mg  
} Ho&f[T(  
} w_QWTD 0  
} ,PKUgL}w  
} QGErQ +l  
# M3d=  
} n1R{[\ >1  
<5FGL96  
选择排序: T|(w-)mv  
ao (Lv+  
package org.rut.util.algorithm.support; Yyw3+3  
1guiuR4  
import org.rut.util.algorithm.SortUtil; DI-CC[  
6 Rg>h  
/** Lke!VS!P&  
* @author treeroot awQB0ow'$P  
* @since 2006-2-2 F 6+4Yy+  
* @version 1.0 {Ov{O,c 5  
*/ A&-2f]L tl  
public class SelectionSort implements SortUtil.Sort { wYv++< z  
@qA11C.hq  
/* R"F:(  
* (non-Javadoc) tgeXX1Eq!  
* Z{F^qwne  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CzDg?wb  
*/ 0NvicZ7VR  
public void sort(int[] data) { )U}`x }:,  
int temp; 00Ye ]j_  
for (int i = 0; i < data.length; i++) { [ 8WG  
int lowIndex = i; \K Kt& bKL  
for (int j = data.length - 1; j > i; j--) { l?^}n(_.  
if (data[j] < data[lowIndex]) { J/Ch /Sa  
lowIndex = j; wo86C[  
} cy2K#  
} Je K0><  
SortUtil.swap(data,i,lowIndex); u+pZ<Bb  
} h}oV)z6  
} {~Q}{ha  
9wC='  
} TD!c+ ${w  
qUQP.4Z95  
Shell排序: PnI_W84z  
`@<)#9'A  
package org.rut.util.algorithm.support; H]{`q  
iYr*0:M  
import org.rut.util.algorithm.SortUtil; qvJQbo[.9P  
[bBPs&7u  
/** 3X`N~_+  
* @author treeroot `]/0&S  
* @since 2006-2-2 @Ps1.  
* @version 1.0 'H1k  
*/ EPEn"{;U  
public class ShellSort implements SortUtil.Sort{ J$yJ2G  
J p0j  
/* (non-Javadoc) lt0byn$vz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "3Ckc"G@  
*/ jhka;m  
public void sort(int[] data) { 7wbpQ&1_  
for(int i=data.length/2;i>2;i/=2){ L^ U.h  
for(int j=0;j insertSort(data,j,i); |q\Rvt$d  
} ;![rwra  
} [](] "r  
insertSort(data,0,1); Uee$5a>(  
} <EuS6Pg  
7{OD/*|  
/** ev5m(wR  
* @param data 9%?a\#C  
* @param j m P./e8  
* @param i G4n-}R&'  
*/ @u-CR8^  
private void insertSort(int[] data, int start, int inc) { f(c#1AJE53  
int temp; x0dBg~I  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %?O$xQ.<  
} ,mE}#cyY  
} Mg\8m-L^  
} W`jKe-jF  
R9~c: A4G  
} ?Pt*4NaT;  
`t]8 [P5  
快速排序: 3'tq`t:SQ  
N9PEn[t@  
package org.rut.util.algorithm.support; @F!oRm5  
:i o[9B [  
import org.rut.util.algorithm.SortUtil; ua%j}%G(  
|I=GI]I  
/** kOv37c'  
* @author treeroot 5Ln !>,  
* @since 2006-2-2 cnU()pd  
* @version 1.0 zw%1 a 3!  
*/ =5 $BR<'  
public class QuickSort implements SortUtil.Sort{ )bB Va^  
3\a VZx!  
/* (non-Javadoc) u 236a\:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F<Z13]|  
*/ Ev1gzHd!i  
public void sort(int[] data) { cIXqnb  
quickSort(data,0,data.length-1); D4U<Rn6N_5  
} f(*iagEy  
private void quickSort(int[] data,int i,int j){ 1<pb=H  
int pivotIndex=(i+j)/2; *XluVochrb  
file://swap C=P}@|K  
SortUtil.swap(data,pivotIndex,j); 0 TOw4pC  
NxN~"bfh  
int k=partition(data,i-1,j,data[j]); qE{L42  
SortUtil.swap(data,k,j); C9nCSbGMY{  
if((k-i)>1) quickSort(data,i,k-1); \S)cVp)h  
if((j-k)>1) quickSort(data,k+1,j); Y?JB%%WWI  
li%A?_/m<&  
} p!+bn,?G  
/** -@mcu{&  
* @param data ~.J{yrJ&  
* @param i 4-W~ 1  
* @param j WTu1t]  
* @return J?qikE&  
*/ m/ngPeZ  
private int partition(int[] data, int l, int r,int pivot) { x{$/|_  
do{ MZdj!(hO  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); a]0hB:  
SortUtil.swap(data,l,r); d(9C7GLC,  
} 2mfG: ^^c  
while(l SortUtil.swap(data,l,r); r/RX|M  
return l; ~f?brQ?  
} zl)r3#6hW  
*:Y9&s^6j  
} lrK?&a9AB  
Z#s-(wf  
改进后的快速排序: G3.\x_;k  
hF9y^Hx4  
package org.rut.util.algorithm.support; dG}*M25  
!+n'0{  
import org.rut.util.algorithm.SortUtil; 3PaMq6Ca  
P B{7u  
/** :qtg`zM/4  
* @author treeroot gyOAvx  
* @since 2006-2-2 '2m"ocaf  
* @version 1.0 [.nkNda5)v  
*/ ])vqXjN6"  
public class ImprovedQuickSort implements SortUtil.Sort { j&`D{z-c~  
NX?6 (lO,  
private static int MAX_STACK_SIZE=4096; CiIIlE4  
private static int THRESHOLD=10; 0MN)Z(Sa  
/* (non-Javadoc) Gc<^ b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M0woJt[&  
*/ A}sdi4[`  
public void sort(int[] data) { BXUd i&'O  
int[] stack=new int[MAX_STACK_SIZE]; xhncQhf\  
[q(}~0{"-  
int top=-1; N7Kkz /  
int pivot; 2\G[U#~bi  
int pivotIndex,l,r; Q8NrbMrl  
Ss'Dto35Q  
stack[++top]=0; ]v0=jm5A  
stack[++top]=data.length-1; KZ|p_{0&  
aa\?k\h'7X  
while(top>0){ QMwV6cA  
int j=stack[top--]; AnQUdU  
int i=stack[top--]; ~oeX0l>F  
slV]CXW)t  
pivotIndex=(i+j)/2; >%85S>e  
pivot=data[pivotIndex]; -Vj112 fI  
Gvc/o$_  
SortUtil.swap(data,pivotIndex,j); X9#i!_*  
rnXoA, c/  
file://partition Y2(,E e2  
l=i-1; /^,/o  
r=j; nT@FS t  
do{ l!%V&HJV  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); g3\1 3<  
SortUtil.swap(data,l,r); Z xR  
} 'PdUSv|lH  
while(l SortUtil.swap(data,l,r); Lg+cHaA  
SortUtil.swap(data,l,j); \`8?=_ST  
N0UZ%,h\  
if((l-i)>THRESHOLD){ $GIup5  
stack[++top]=i; +aRHMH  
stack[++top]=l-1; PAv<J<d  
} -_BjzA|  
if((j-l)>THRESHOLD){ > @q4Uez  
stack[++top]=l+1; +=(@=PJ6  
stack[++top]=j; qj,^"rp1:  
} DcEGIaW  
ilFS9A3P  
} jW]Fx:mQi  
file://new InsertSort().sort(data); =v~$&@  
insertSort(data); Q=#!wWVP  
} z A@w[.  
/** D~@lpcI  
* @param data $ZnVs@:S  
*/ TJkWL2r0c  
private void insertSort(int[] data) { Px?0)^"2  
int temp; :47"c3J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (JeRJ4  
} K@;ls  
} {m 5R=22^  
} }o9(Q8  
r;OE6}L>  
} _@ @"'  
&6@e9ff0  
归并排序: /BfCh(B  
9NcC.}#-5  
package org.rut.util.algorithm.support; QD*(wj  
[LHfH3[gU  
import org.rut.util.algorithm.SortUtil; wvg>SfV,e  
 B<?fD  
/** S[o R q  
* @author treeroot / S)&dN`  
* @since 2006-2-2 j=TG&#e  
* @version 1.0 t^@4n&Dg  
*/ [[d@P%X&  
public class MergeSort implements SortUtil.Sort{ "Kt[jV;6  
)ia$pe s  
/* (non-Javadoc) <D{_q.`vA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }8&L?B;90  
*/ X P_ V  
public void sort(int[] data) { .%N*g[J  
int[] temp=new int[data.length]; U0%m*i  
mergeSort(data,temp,0,data.length-1); D1<$]r,  
} |&a[@(N:zf  
Z  )dz  
private void mergeSort(int[] data,int[] temp,int l,int r){ 9{V54ue;  
int mid=(l+r)/2; zhFk84  
if(l==r) return ; R^F\2yth-  
mergeSort(data,temp,l,mid); ce P1mO  
mergeSort(data,temp,mid+1,r); rJl'+Ae9N|  
for(int i=l;i<=r;i++){ nH]F$'rtA  
temp=data; k!6wVJ|_Y  
} :ift{XR'  
int i1=l; SgocHpyg  
int i2=mid+1; {,rVA(I@  
for(int cur=l;cur<=r;cur++){ =1Mh %/y  
if(i1==mid+1) Dx<CO1%z-  
data[cur]=temp[i2++]; S\O6B1<:  
else if(i2>r) ^~%z Plv  
data[cur]=temp[i1++]; /K]<7  
else if(temp[i1] data[cur]=temp[i1++]; (j;6}@  
else L E>A|M$X  
data[cur]=temp[i2++]; +e%U6&l{  
} saaN$tU7  
} .\> I-  
enGjom  
} qSWnv`hL  
?"[h P=3J  
改进后的归并排序: cQMb+Q2Yw  
/n SmGAO  
package org.rut.util.algorithm.support; Qm X(s  
4W''j[Y/  
import org.rut.util.algorithm.SortUtil; Ya)s_Zr7  
;9R;D,Gk!  
/** %CP:rAd`M.  
* @author treeroot )R2BTE:  
* @since 2006-2-2 WwF4`kxT  
* @version 1.0 Gq/f|43}@O  
*/ 6DG:imGl  
public class ImprovedMergeSort implements SortUtil.Sort { bvM a|;f1  
=wW3Tr7~  
private static final int THRESHOLD = 10; I!ykm\<  
f: h.O# d>  
/* v@0lTl_  
* (non-Javadoc) kgvB80$4  
* zW_V)U Ne  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0} UJP   
*/ Tej-mr3P  
public void sort(int[] data) { [~ sXjaL8  
int[] temp=new int[data.length]; >k?/'R  
mergeSort(data,temp,0,data.length-1); P/'~&*m-  
} bV#U&)|  
oA kF  
private void mergeSort(int[] data, int[] temp, int l, int r) { :A,V<Es}I"  
int i, j, k; 6.Nu[-?  
int mid = (l + r) / 2; -k p~p e*T  
if (l == r) lMX 2O2 o  
return; nL+*-R!R  
if ((mid - l) >= THRESHOLD) nz|;6?LCLY  
mergeSort(data, temp, l, mid); aPq9^S*  
else +b.qzgH>r  
insertSort(data, l, mid - l + 1); IPU'M*|Q  
if ((r - mid) > THRESHOLD) 0(|BQ'4~H  
mergeSort(data, temp, mid + 1, r); `CI9~h@k  
else u:pdY'`"#  
insertSort(data, mid + 1, r - mid); dUtxG ~9  
*Rv eR?kO  
for (i = l; i <= mid; i++) { 0KyujU?sF  
temp = data; x-0IxWD%  
} r3l}I 6  
for (j = 1; j <= r - mid; j++) { #dDsI]E )  
temp[r - j + 1] = data[j + mid]; AF1";duA  
} 2hV#3i  
int a = temp[l]; &+-ZXN  
int b = temp[r]; )EYsqj  
for (i = l, j = r, k = l; k <= r; k++) { \^kyC1  
if (a < b) { t@1e9uR  
data[k] = temp[i++]; ;^ :9huN  
a = temp; #D3e\(  
} else { +(5H$O{h  
data[k] = temp[j--]; i+yqsYKO  
b = temp[j]; v#.FK:u}  
} pr\yc  
} ^Ois]#py  
} |EaGKC(   
>U^AIaW  
/** Tk9*@kqv  
* @param data ](NSpU|*  
* @param l [UquI "  
* @param i x{u_kepv[k  
*/ |v8>22y  
private void insertSort(int[] data, int start, int len) { a J[VX)"J  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); k+44ud.j  
} /a6\G.C5  
} c6s*u%+},  
} ;)[RG\  
} RMDs~  
a=gTGG"9  
堆排序: 7|T<dfQk  
Giz9jzF \  
package org.rut.util.algorithm.support; kR6rf_-[  
gE JmMh  
import org.rut.util.algorithm.SortUtil; 4pkc9\  
&qFdP'E;$  
/** oo3ZYA  
* @author treeroot A,MRK#1u  
* @since 2006-2-2 @g[p>t> *  
* @version 1.0 7*OO k"9  
*/ `8\pihww  
public class HeapSort implements SortUtil.Sort{ ?AyG!F  
W+a>*#*  
/* (non-Javadoc) A2Rr*e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q <^'v>~n  
*/ ;7 i0ko9  
public void sort(int[] data) { 1 @E<5rp o  
MaxHeap h=new MaxHeap(); X6!u(plVQ  
h.init(data); q>r9ooN  
for(int i=0;i h.remove(); Pp:(PoH  
System.arraycopy(h.queue,1,data,0,data.length); :cG_aO kid  
} }{:H0)H*  
/`D]m?  
private static class MaxHeap{ xx nW1`]  
e<l Wel  
void init(int[] data){ 9Z6] ];8E  
this.queue=new int[data.length+1]; E92dSLhs5  
for(int i=0;i queue[++size]=data; mR[J Xh9s  
fixUp(size); C $aiOK-]+  
} nmc=RK^cM  
} eek5Xm  
QZ"Lh  
private int size=0; Q)C#)|S  
Sq UoXNw  
private int[] queue; Bb]pUb  
P00d#6hPJ  
public int get() { QSAz:Yvf|  
return queue[1]; Bg"b,&/^u  
} t}qoIxy)  
j?+FS`a!  
public void remove() { '+Gt+Gq+  
SortUtil.swap(queue,1,size--); aQMET~A:  
fixDown(1); b3H~a2"d  
} =JOupw  
file://fixdown WA8Qt\Q  
private void fixDown(int k) { CP|N2rb  
int j; tKo ^A:M  
while ((j = k << 1) <= size) { ZJ 8~f  
if (j < size %26amp;%26amp; queue[j] j++; MH?|>6  
if (queue[k]>queue[j]) file://不用交换 rV"<1y:g  
break; zr\I1v]?1#  
SortUtil.swap(queue,j,k); 6*S|$lo9B  
k = j; VDx=Tsu-  
} Dvo.yn|kB  
} bb$1RLyRL  
private void fixUp(int k) { 9&g//JlD  
while (k > 1) { tcwE.>5O  
int j = k >> 1; s)_7*DY  
if (queue[j]>queue[k]) xQ* U9Wt;T  
break; hc"+6xc  
SortUtil.swap(queue,j,k); x5WFPY$wM  
k = j; ?2 u_E "  
} z=N'evx~  
} gPT-zul  
G=jdb@V/?  
} 8,a&i:C  
bguhx3s  
} zM|d9TS  
=mn)].Wg  
SortUtil: ^a[7qX_B  
!\}Dxt  
package org.rut.util.algorithm; (VO) Q  
R KFz6t  
import org.rut.util.algorithm.support.BubbleSort; '8 1M%KO  
import org.rut.util.algorithm.support.HeapSort; o`+6E q0w  
import org.rut.util.algorithm.support.ImprovedMergeSort; #@;RJJZg  
import org.rut.util.algorithm.support.ImprovedQuickSort; (i.MxG Dd  
import org.rut.util.algorithm.support.InsertSort; >e/;  
import org.rut.util.algorithm.support.MergeSort; m[LIM}Gu  
import org.rut.util.algorithm.support.QuickSort; `5r*4N<  
import org.rut.util.algorithm.support.SelectionSort; 0<>I\UN0b  
import org.rut.util.algorithm.support.ShellSort; |<\o%89AM  
HN7(-ml=B  
/** k v,'9z  
* @author treeroot J|W~\(W6i  
* @since 2006-2-2 K,&)\r kzD  
* @version 1.0 Y 1rU  
*/ `l9Pk\X[  
public class SortUtil { 8+k\0fmy  
public final static int INSERT = 1; Dq)V] Zx  
public final static int BUBBLE = 2; :2^%^3+V  
public final static int SELECTION = 3; c+f~>AaI  
public final static int SHELL = 4; we4e>)  
public final static int QUICK = 5; ~%qHJ4C  
public final static int IMPROVED_QUICK = 6; $z1u>{  
public final static int MERGE = 7; >)R7*^m{'  
public final static int IMPROVED_MERGE = 8; }y(1mzb  
public final static int HEAP = 9; p(8H[L4Y  
%C" wUAY  
public static void sort(int[] data) { t.t$6+"5We  
sort(data, IMPROVED_QUICK); T\:Vu{|  
} |#D3~au   
private static String[] name={ "o*(i7T=n  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `{c %d  
}; a9j f7r1  
Zgkk%3'^'  
private static Sort[] impl=new Sort[]{ "a6[FqTs  
new InsertSort(), .}&bE1  
new BubbleSort(), hk3}}jc  
new SelectionSort(), iOkRBi  
new ShellSort(), 0UB)FK ,9  
new QuickSort(), 8L`J](y  
new ImprovedQuickSort(), qZ'&zB)  
new MergeSort(), gXZC%S  
new ImprovedMergeSort(), H5'/i;  
new HeapSort() QFY1@2EC  
}; $ jWe!]ASU  
KhIg  
public static String toString(int algorithm){ dYrw&gn  
return name[algorithm-1]; eU&[^  
} L:nZ_O;  
V|e9G,z~A  
public static void sort(int[] data, int algorithm) { y!&6"l$K]  
impl[algorithm-1].sort(data); ~~!iDF\  
} u|&"l  
J,Du:|3o  
public static interface Sort { M>nplHq   
public void sort(int[] data); Q'/v-bd?o  
} a'u:1C^\  
Clr~:2g\  
public static void swap(int[] data, int i, int j) { Yj)H!Cp.xD  
int temp = data; :c[iS~ ~Y  
data = data[j]; U2 m86@E  
data[j] = temp; aMKi`EW  
} EVZuwbO)|  
} ! eXDN  
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