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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。 2nRL;[L*.  
插入排序: v*7lJNN.  
R2af>R  
package org.rut.util.algorithm.support; ?][2J  
zU9G: jH  
import org.rut.util.algorithm.SortUtil; nVC:5ie  
/** Ge>%?\  
* @author treeroot bstc|8<  
* @since 2006-2-2 6%B5hv24v  
* @version 1.0 ''f07R  
*/ '}{J;moB  
public class InsertSort implements SortUtil.Sort{ zW_V)U Ne  
0} UJP   
/* (non-Javadoc) lnFOD+y9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0pS|t/h0  
*/ `!j|Ym  
public void sort(int[] data) { pCQB<6&1N  
int temp; 38%xB<Y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b&;1b<BwD  
} e%'$Vx0kA  
} w`vJE!4B  
} $GyO+xF  
o Ohm`7iy  
} lMX 2O2 o  
d))(hk:  
冒泡排序: y#AwuC K  
rdsm /^,s  
package org.rut.util.algorithm.support; N;A #3Ter  
pHFh7-vj  
import org.rut.util.algorithm.SortUtil; g< cR/  
`MgR/@%hr  
/** fn zj@_{|  
* @author treeroot 2B8p3A  
* @since 2006-2-2 66?!"w  
* @version 1.0 @+ VvZc2Y  
*/ |i"A!r W  
public class BubbleSort implements SortUtil.Sort{ x-0IxWD%  
O/wl";-  
/* (non-Javadoc) bh&,*Y6=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W>Y8 u8  
*/ G qI^$5?  
public void sort(int[] data) { xa`&/W>  
int temp; 22\Buk}?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ sQ/7Mc  
if(data[j] SortUtil.swap(data,j,j-1); JbG\Ywi0]  
} >wjWX{&?  
} ;^ :9huN  
} TRrO-  
} QeA)@x.p  
PKR0y%Ar  
} BBw`8!  
WIXzxI<)  
选择排序: =y8HOT}8  
,~FyC_%*  
package org.rut.util.algorithm.support; >U^AIaW  
Z9ciS";L  
import org.rut.util.algorithm.SortUtil; bCk_ZA  
_Kx  /z  
/** 9U6y<X  
* @author treeroot !o*BRR*  
* @since 2006-2-2 ?6B)Ek,'X?  
* @version 1.0 4x=rew>Ew  
*/ N10'./c K  
public class SelectionSort implements SortUtil.Sort { R! ?8F4G  
x;LyR  
/* bvn?wK   
* (non-Javadoc) m?xzx^xs/  
* z-uJ+SA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %96JH YcX  
*/ *#Hi W)  
public void sort(int[] data) { 88h-.\%Z  
int temp; m:/@DZ  
for (int i = 0; i < data.length; i++) { F&;g< SD  
int lowIndex = i; kjN9(&D  
for (int j = data.length - 1; j > i; j--) { x2/|i? ZO  
if (data[j] < data[lowIndex]) { GC H= X  
lowIndex = j; GY<Y,  
} 5JDqSz{  
} ('W#r"  
SortUtil.swap(data,i,lowIndex); |]DZc/  
} P /wc9Yt  
} OCo=h|qBp  
p{!aRB%  
} x 3#1  
0gHJ%m9s  
Shell排序: Pf6rr9  
 ;e()|  
package org.rut.util.algorithm.support; d#I'9O0&  
jN 5Hku[?  
import org.rut.util.algorithm.SortUtil; O~9 %!LAu  
LcE!e%3  
/** &pK1S>t  
* @author treeroot 9fvy)kX;s  
* @since 2006-2-2 sL~TV([6/  
* @version 1.0 i5|A\Wv"  
*/ R8Lp8!F'  
public class ShellSort implements SortUtil.Sort{ xv's52x  
`f*?|)  
/* (non-Javadoc) it5].A&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N+b" LZc  
*/ QgEG%YqB  
public void sort(int[] data) { kE,~NG9P  
for(int i=data.length/2;i>2;i/=2){ wX#=l?,K  
for(int j=0;j insertSort(data,j,i); ! s?vj <  
} /Y:_qsO1  
} 4Me*QYD  
insertSort(data,0,1); J@H9nw+Q  
} .gv J;A7  
K`j#'`/KC  
/** d'kQE_y2.  
* @param data QT9(s\u  
* @param j k:Uyez  
* @param i w%VHq z$  
*/ 2hw3+ o6  
private void insertSort(int[] data, int start, int inc) { _z)G!_7.>\  
int temp; 1*[h$Z&H?  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^;<s"TJ(m)  
} _|wgw^.LJ]  
} hrN r i$  
} 6WgGewn  
6BFtY+.y  
} w1rB"rB?  
Od^y&$|_%`  
快速排序: yps7MM-r  
MQD UJ^I$  
package org.rut.util.algorithm.support; X{9D fgW  
^uMy|d  
import org.rut.util.algorithm.SortUtil; =KmjCz:  
R6h(mPYA  
/** @PZ&/F ^  
* @author treeroot vE>J@g2#  
* @since 2006-2-2 )2g\GRg6  
* @version 1.0 f /&Dy'OV7  
*/ 6;l{9cRgc  
public class QuickSort implements SortUtil.Sort{ pTST\0?  
iPa!pg4m  
/* (non-Javadoc) 6sRn_y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q SW03/_f  
*/ Fm`hFBKW  
public void sort(int[] data) { bkceR>h%  
quickSort(data,0,data.length-1); u!k\W{  
} ` *&*jdq&i  
private void quickSort(int[] data,int i,int j){ 3:PBVt=  
int pivotIndex=(i+j)/2; c;&m}ImLe.  
file://swap b DeHU$  
SortUtil.swap(data,pivotIndex,j); ?>1AT ==wI  
' 6Ybf  
int k=partition(data,i-1,j,data[j]); e/r41  
SortUtil.swap(data,k,j); %Fa/82:- "  
if((k-i)>1) quickSort(data,i,k-1); fYuJf,I[f  
if((j-k)>1) quickSort(data,k+1,j); d?oupW}uu  
[kt!\-  
} 2rB$&>}T  
/**  w+=>b  
* @param data 2wlrei  
* @param i z. VuY3  
* @param j Gk;==~  
* @return VSx[{yn  
*/ _;O$o t\5  
private int partition(int[] data, int l, int r,int pivot) { o*_[3{FU  
do{ u&I?LZ-=,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^cZF#%k  
SortUtil.swap(data,l,r); _SY<(2s]B  
} |+~CdA  
while(l SortUtil.swap(data,l,r); 0F8y8s  
return l; Op" \i   
} vd|PTHV_  
SuB;Nb7r`  
} Sqed*  
y"#o9"&>&  
改进后的快速排序: Uq<c+4)5  
/+1+6MqRn*  
package org.rut.util.algorithm.support; cWl  
G!RbM.6  
import org.rut.util.algorithm.SortUtil; y1p^ &9 U  
$iUK, ?  
/** I5mnV<QA^  
* @author treeroot "o*(i7T=n  
* @since 2006-2-2 ^Y8?iC<+  
* @version 1.0 a9j f7r1  
*/ Zgkk%3'^'  
public class ImprovedQuickSort implements SortUtil.Sort { %{!*)V\  
\EuMzb"G9p  
private static int MAX_STACK_SIZE=4096; /csj(8^w  
private static int THRESHOLD=10; 8)s}>:}  
/* (non-Javadoc) \rn:/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) luACdC  
*/ ?x7zYE,6  
public void sort(int[] data) { ^q-]."W]t~  
int[] stack=new int[MAX_STACK_SIZE]; wS-D"\4/  
'h53:?~  
int top=-1;  F"FGPk  
int pivot; 8)\Td tBf9  
int pivotIndex,l,r; 1//d68*"  
O68/Hf1W  
stack[++top]=0; }dQW -U  
stack[++top]=data.length-1; |k1(|)%G  
g VX  
while(top>0){ es 8%JTi  
int j=stack[top--]; cK%Sty'8+  
int i=stack[top--]; ;9PJ K5>~  
0"o%=i;  
pivotIndex=(i+j)/2; ,#W>E,UU  
pivot=data[pivotIndex]; KV0M^B|W  
V]dzKNFi  
SortUtil.swap(data,pivotIndex,j); R".~{6  
-L%tiz`_  
file://partition `n7*6l<k~4  
l=i-1; P&@ 2DI3m  
r=j; hg[ob+"  
do{ _; /onM   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); MKzIY:u g  
SortUtil.swap(data,l,r); I!>pHF4  
} C +S  
while(l SortUtil.swap(data,l,r); )F*;7]f  
SortUtil.swap(data,l,j); 0aj4.H*%  
q;a"M7  
if((l-i)>THRESHOLD){ mucKmb/  
stack[++top]=i; DdDwMq  
stack[++top]=l-1; Qau\6p>^  
} V| 9<*  
if((j-l)>THRESHOLD){ )RV.N}NU  
stack[++top]=l+1; :'p+Ql~c  
stack[++top]=j; ;%wQnhg  
} P(AcDG6K  
6?\X)qBI  
} $p? gai{o  
file://new InsertSort().sort(data); f/+UD-@%m  
insertSort(data); #fdQ\)#q>  
} P5,X,-eG  
/**  {}x{OP  
* @param data kD1[6cJ!=.  
*/ Z ,4G'[d  
private void insertSort(int[] data) { %z1y3I|`[t  
int temp; wP:ab  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /DLgE7iU%  
} EhJpJb[Z  
} U&x)Q  
} JSO'. [N  
-hv<8bC~4  
} hHXTSk2  
e:2e5gz  
归并排序: 3hUU$|^4gm  
|a! y%R=  
package org.rut.util.algorithm.support; U42B( ow  
.]gY{_|x  
import org.rut.util.algorithm.SortUtil; s,~)5nL  
M$L ; -T  
/** 0=g~ozEW&  
* @author treeroot fT$Fv  
* @since 2006-2-2 PO1|l-v<Yq  
* @version 1.0 w+ MCOAB  
*/ %v)m&VUi%  
public class MergeSort implements SortUtil.Sort{ (>.+tq}  
RxUABF8b  
/* (non-Javadoc) <Wz+f+HC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0J \hku\  
*/ P/9iB/  
public void sort(int[] data) { <OR f{  
int[] temp=new int[data.length]; LA\)B"{J  
mergeSort(data,temp,0,data.length-1); FEoH$.4  
} @)hrj2Jw  
H6fR6Kr4j  
private void mergeSort(int[] data,int[] temp,int l,int r){ \7l% @  
int mid=(l+r)/2; ccCe@1RI  
if(l==r) return ; !`UHr]HJ  
mergeSort(data,temp,l,mid); f*uD9l%/  
mergeSort(data,temp,mid+1,r); }iu(-{Z  
for(int i=l;i<=r;i++){ Z{#;my*X|  
temp=data; $d[ -feU  
} Gd= l{~  
int i1=l; >%PPp.R  
int i2=mid+1; +|SvJ  
for(int cur=l;cur<=r;cur++){ hp:8e@  
if(i1==mid+1) VlLc[eVV  
data[cur]=temp[i2++]; O7KR~d  
else if(i2>r) fD>0  
data[cur]=temp[i1++]; ^Ko{#qbl/  
else if(temp[i1] data[cur]=temp[i1++]; *CnrzrKtQ  
else =2BB ~\G+  
data[cur]=temp[i2++]; 9S _N*wC.  
} MZ/PXY  
} o{QU?H5h  
C/sDyv$  
} .JJ^w!|>#  
@C}Hx;f6  
改进后的归并排序: Gkfc@[Z V  
pPezy:  
package org.rut.util.algorithm.support; 4 Ii@_r>  
p| #gn<z}  
import org.rut.util.algorithm.SortUtil; .F*2]xj@"  
' YONRha  
/** HJ\CGYmyz  
* @author treeroot 8/4Gr8 o  
* @since 2006-2-2 [H3~b=  
* @version 1.0 +]!`>  
*/ N,><,7!q$,  
public class ImprovedMergeSort implements SortUtil.Sort { kOe~0xoT@u  
a%wK[yVp  
private static final int THRESHOLD = 10; YBX7WZCR  
.)wj{(>TJ  
/* /&+6nOP  
* (non-Javadoc) kZlRS^6  
* i>M*ubWE4@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qwb`8o  
*/ oc2aE:>X  
public void sort(int[] data) { (5"BKu1t  
int[] temp=new int[data.length]; E"[^^<I  
mergeSort(data,temp,0,data.length-1); J{Z-4y  
} 10/N-=NG18  
n.m6n*sf7  
private void mergeSort(int[] data, int[] temp, int l, int r) { :*2+t-  
int i, j, k; @'EP$!c  
int mid = (l + r) / 2; ,H3C\.%w\  
if (l == r) bW`@9 =E  
return; q5$z:'zE  
if ((mid - l) >= THRESHOLD) !(!BW9Zt+  
mergeSort(data, temp, l, mid); $E^#DjhRQ3  
else zN\~v  
insertSort(data, l, mid - l + 1); Lp \%-s#5s  
if ((r - mid) > THRESHOLD) %qzpt{'?<  
mergeSort(data, temp, mid + 1, r); 3q:-98DT  
else dkV%Pyj  
insertSort(data, mid + 1, r - mid); !Xwp;P=  
zXB]Bf3TH  
for (i = l; i <= mid; i++) { ;+-$=l3[a  
temp = data; {-rK:*yP'u  
} B;8YX>r  
for (j = 1; j <= r - mid; j++) { Ii?"`d+JA  
temp[r - j + 1] = data[j + mid]; hfY Ieb#91  
} O_f|R1G5z  
int a = temp[l]; 6e@ O88=  
int b = temp[r]; i3.8m=>  
for (i = l, j = r, k = l; k <= r; k++) { IbpE@C  
if (a < b) { qYFol# =%  
data[k] = temp[i++]; LnJ/t(KV  
a = temp; %PG::b  
} else { Y2Mti- \  
data[k] = temp[j--]; {uO8VL5+Qx  
b = temp[j]; +w/Ax[K  
} k=[!{I  
} :^SpKe(7  
} I}Z[F,}*J  
b?oT|@  
/** A.vcE  
* @param data (Jf i 3 m  
* @param l qy@gW@IU  
* @param i 1){1 HK  
*/ 8\8uXOS  
private void insertSort(int[] data, int start, int len) { RlX;c!K  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -e%=Mpq.  
} ?ZSG4La\  
} (0W%Y Z!&  
} -!MDYj+U  
} Bh*~I_Ta>  
mW 5L;>  
堆排序: Ul[>LKFY  
n/s!S &  
package org.rut.util.algorithm.support; d\, 4Wet;#  
q4 'x'8  
import org.rut.util.algorithm.SortUtil; $BE^'5G&4Y  
rK~362|mo  
/** )QTk5zt  
* @author treeroot O6OP{sb  
* @since 2006-2-2 C3 0b}2  
* @version 1.0 5"y p|Yl  
*/ +M@G 8l  
public class HeapSort implements SortUtil.Sort{ `Dh%c%j)  
8Mg4y1)RU  
/* (non-Javadoc) ^V_acAuS^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z.Y7u3K.8  
*/ |gxU;"2`5~  
public void sort(int[] data) { ACl:~7;  
MaxHeap h=new MaxHeap(); ~A8lvuw3  
h.init(data); =Mn! [  
for(int i=0;i h.remove(); gKb4n Nt  
System.arraycopy(h.queue,1,data,0,data.length); P xpz7He  
} h%+8}uywZ  
qvYYKu  
private static class MaxHeap{ r'&9'rir2  
RO wbzA)]r  
void init(int[] data){ qR]4m]o  
this.queue=new int[data.length+1]; v_c'npC  
for(int i=0;i queue[++size]=data; #A]7cMZ'W  
fixUp(size); %/etoK  
} 4C01=,6ye  
} AV d  
>w j7Y`  
private int size=0; #yr19i ?  
GeHDc[7  
private int[] queue; -&,NM  
d*A>P  
public int get() { ;S?1E:\av  
return queue[1]; jcq(=7j  
} D<++6HN&#  
niy@'  
public void remove() { #(aROTV5a  
SortUtil.swap(queue,1,size--); i+&= "Z@  
fixDown(1); @/$mZ]|T  
} oN `tZ;a  
file://fixdown E=QL4*?   
private void fixDown(int k) { /mD KQ<  
int j; z%Z}vWn  
while ((j = k << 1) <= size) { G~B V^  
if (j < size %26amp;%26amp; queue[j] j++; )&R;!#;5  
if (queue[k]>queue[j]) file://不用交换 G=nFs)z  
break; YSa:"A  
SortUtil.swap(queue,j,k); 3gabk/  
k = j; JyB>,t)  
} (ZEVbAY?i  
} akCl05YW  
private void fixUp(int k) { rM=Hd/ki5  
while (k > 1) { iL,3g[g  
int j = k >> 1; t9`NCng 5  
if (queue[j]>queue[k]) yPQ{tS*t  
break;  gA[M  
SortUtil.swap(queue,j,k); zf o.S[R@  
k = j; "5y^s!/  
} |@ldXuYb  
} qFs<s<]  
XdS<51 C  
} &9ZIf#R  
sQ)4kF&,  
} i@I%$!cB  
Xj@Kt|&`k  
SortUtil: " LxJPt\  
a<o0B{7{BM  
package org.rut.util.algorithm; FN,uD:a  
Bhs`Y/Ls-  
import org.rut.util.algorithm.support.BubbleSort; ]_pL79y  
import org.rut.util.algorithm.support.HeapSort; ^CE:?>a$  
import org.rut.util.algorithm.support.ImprovedMergeSort; d:wAI|  
import org.rut.util.algorithm.support.ImprovedQuickSort; nWl0R=  
import org.rut.util.algorithm.support.InsertSort; A"k,T7B  
import org.rut.util.algorithm.support.MergeSort; *FE<'+%  
import org.rut.util.algorithm.support.QuickSort; K5ph x  
import org.rut.util.algorithm.support.SelectionSort; 6,h<0j{  
import org.rut.util.algorithm.support.ShellSort; \bsm#vY,  
5 O6MI4:  
/** mzw*6e2T  
* @author treeroot :_H88/?RR  
* @since 2006-2-2 a,E;R$[!  
* @version 1.0 -)Vj08aP  
*/ JQ1VCG  
public class SortUtil { ;8v5 qz  
public final static int INSERT = 1;  {Eb6.  
public final static int BUBBLE = 2; y5ExEXa  
public final static int SELECTION = 3; z7_./ksQ  
public final static int SHELL = 4; p4Y 9$(X  
public final static int QUICK = 5; eo80L  
public final static int IMPROVED_QUICK = 6; xV6j6k  
public final static int MERGE = 7; K%k,-  
public final static int IMPROVED_MERGE = 8; yh)q96m-V=  
public final static int HEAP = 9; fI|1@e1  
#n7{ 3)   
public static void sort(int[] data) { 7.t$#fzi  
sort(data, IMPROVED_QUICK); c9[5)  
} OG+$F  
private static String[] name={ z W _'sC  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L;  ~=(  
}; gkdjH8(2  
vKt_z@{{L  
private static Sort[] impl=new Sort[]{ f,#xicSB*  
new InsertSort(), ;1 fML,8  
new BubbleSort(), ivq4/Y] -X  
new SelectionSort(), jZ;T&s  
new ShellSort(), 9<ayQ*  
new QuickSort(), t|m3b~Oyv  
new ImprovedQuickSort(), 24Fxx9 g  
new MergeSort(), 34=0.{qn  
new ImprovedMergeSort(), 5-*]PAC  
new HeapSort() I}WJ0}R  
}; v+G:,Tc"  
5ZVTI,4K  
public static String toString(int algorithm){ vn<S"  
return name[algorithm-1]; +9X[gef8  
} LcXMOT)s  
1#(1Bs6X  
public static void sort(int[] data, int algorithm) { t/Fe"T[,V  
impl[algorithm-1].sort(data); -,dQ&Qf?  
} >`:+d'Jv0  
+*V; f,  
public static interface Sort { FScQS.qF  
public void sort(int[] data); E@Fen CF  
} IoA;q)  
c0 |p34  
public static void swap(int[] data, int i, int j) { Jy_'(hG  
int temp = data; ?la_ +;m  
data = data[j]; (=j!P*  
data[j] = temp; K^H t$04  
} U\ued=H  
} kR|y0V {K*  
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