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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。 OQumA j  
插入排序: 6La[( )  
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package org.rut.util.algorithm.support; o^epXIrIPi  
`%Fp'`ZM$8  
import org.rut.util.algorithm.SortUtil; R%.`h  
/** {($bz T7c  
* @author treeroot `ArUoYb B  
* @since 2006-2-2 %* 0GEfl/  
* @version 1.0 qe.QF."y  
*/ cH&)Iz`f  
public class InsertSort implements SortUtil.Sort{ [ K?  
;^/ruf[t  
/* (non-Javadoc) -`' |z+V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N|i>|2EB  
*/ e=9/3?El  
public void sort(int[] data) { Ke4oLF2  
int temp; wNi%u{T  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lfAy$qP"}  
} ZFLmD|q#{  
} -f|/#1  
} SNqSp.>-U"  
'bx}[  
} =b%f@x_U1  
s:_hsmc"  
冒泡排序: b%lB&}uw}  
NAo.79   
package org.rut.util.algorithm.support; *fm?"0M5  
z#+WK| a  
import org.rut.util.algorithm.SortUtil; \hX,z =  
XKGiw 2 C  
/** i6paNHi*  
* @author treeroot 0se%|Z|8  
* @since 2006-2-2 F/2cQ .u2  
* @version 1.0 q]{gAGe~  
*/ s{dm,|?Jl,  
public class BubbleSort implements SortUtil.Sort{ <pk*z9   
IGTO|sT"  
/* (non-Javadoc) zh) &6'S\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A'w+Lc.2  
*/ tEL;,1  
public void sort(int[] data) { ]L~z9)  
int temp; IX+Jf? &^  
for(int i=0;i for(int j=data.length-1;j>i;j--){ nC3+Zka  
if(data[j] SortUtil.swap(data,j,j-1); jN+`V)p  
} OD'~t,St  
} :kHk'.V1(  
} lH3.q4D 5  
} #)S}z+I  
mH,s!6j?Vp  
} 4>(K~v5;N  
B <s+I#  
选择排序: (`4&h%g  
cP tDIc,  
package org.rut.util.algorithm.support; gp9O%g3'  
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import org.rut.util.algorithm.SortUtil; 7ZI{A*^vB  
#w L(<nE  
/** I0Do%  
* @author treeroot _j+,'\B  
* @since 2006-2-2 b#I,Z+0ry  
* @version 1.0 '\{ OQ H  
*/ 6Y[&1c8  
public class SelectionSort implements SortUtil.Sort { 9-n]_AF`0  
DSs/D1mj&  
/* >IQ&*Bb  
* (non-Javadoc) +_:p8, 5o  
* |!K&h(J|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ScJ:F-@>  
*/ -v9(43  
public void sort(int[] data) { :G#%+,  
int temp; wp:$Tqa$  
for (int i = 0; i < data.length; i++) { 8TYh&n=r  
int lowIndex = i; KeyKLkg>  
for (int j = data.length - 1; j > i; j--) { X:Y1g)|K  
if (data[j] < data[lowIndex]) { V.3#O^S  
lowIndex = j; DQhHU1  
} ,;6%s>Cvd(  
} m@nGXl'!  
SortUtil.swap(data,i,lowIndex); Rb<| <D+  
} d '2JMdbc  
} > X  AB#  
'0 Ys`Qo  
} +]t9kr  
K/(LF}  
Shell排序: 07^.Z[(pCt  
mV]~}7*Y;  
package org.rut.util.algorithm.support; l&Q@+xb>  
Z2{$FN  
import org.rut.util.algorithm.SortUtil; 5%S5*c6BD  
NZ`6iK-V_  
/** }c/#WA|b  
* @author treeroot lJa-O  
* @since 2006-2-2 _`Kh8G {e  
* @version 1.0 'NWvQR<X  
*/ w32F?78]  
public class ShellSort implements SortUtil.Sort{ W9cvxsox  
Nj6Np^@sH  
/* (non-Javadoc) fx 08>r   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w 8o?wx*  
*/ I-.? qcy~  
public void sort(int[] data) { VII`qbxT  
for(int i=data.length/2;i>2;i/=2){ y%--/;  
for(int j=0;j insertSort(data,j,i); *QW.#y>"j  
} dY?l oFz  
} /_fZ2$/  
insertSort(data,0,1); Yp m*or  
} mp3Dc  
7TAoWD3  
/** MS SHMR  
* @param data Qvny$sr2  
* @param j m$Tt y[0  
* @param i |RpZr!3V  
*/ qyyLU@hd  
private void insertSort(int[] data, int start, int inc) { unL1/JY z  
int temp; R U[  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &m(eMX0lU  
} 2b {Y1*  
} TuMZHB7h;  
} \l6mX In=>  
~$a%& ]\  
} (I`< ;  
!oV'  
快速排序: LY0/\Z"N  
Vfw +m1sS  
package org.rut.util.algorithm.support; _}Gs9sHr0K  
g2 V $  
import org.rut.util.algorithm.SortUtil; :Z ]E:f0P  
HV3wUEI3  
/** 1?+)T%"  
* @author treeroot Z?",+|4  
* @since 2006-2-2 '.&,.E&{$  
* @version 1.0 Q[O U`   
*/ HSl$ U0  
public class QuickSort implements SortUtil.Sort{ `.6Jgfu  
,/L_9wV-\  
/* (non-Javadoc) Jf2:[ Mq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \No22Je6d  
*/ A[d'*n[  
public void sort(int[] data) { ] )x z  
quickSort(data,0,data.length-1); q33!X!br  
} r52,f%nlm  
private void quickSort(int[] data,int i,int j){ uP ?gGo  
int pivotIndex=(i+j)/2; \;tKss!|  
file://swap `|JQ)!Agx  
SortUtil.swap(data,pivotIndex,j); OaxE3bDT  
m4P=,=%  
int k=partition(data,i-1,j,data[j]); ;Wr,VU]  
SortUtil.swap(data,k,j); q14A 'XW  
if((k-i)>1) quickSort(data,i,k-1); UE\@7  
if((j-k)>1) quickSort(data,k+1,j); J2#=`|t"  
7e#|=e *I!  
} S+OI?QS  
/** *t|j+*c}  
* @param data W%Zyt:H`  
* @param i ~(0Y`+gC  
* @param j -+I! (?  
* @return +TX p;6pA  
*/ Xhkw<XbV  
private int partition(int[] data, int l, int r,int pivot) { B&Ci*#e  
do{ f&cG;Y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); SS~Txt75m  
SortUtil.swap(data,l,r); 1aMBCh<}JN  
} ^lMnwqx<  
while(l SortUtil.swap(data,l,r); s9GPDfZ  
return l; $kz5)vj "  
} ptq{$Y{_  
@x J^JcE  
} >qUO_>  
7<:w-  
改进后的快速排序: j1iC1=`ZM  
|95/'a*  
package org.rut.util.algorithm.support; z=Vvb  
$-AvH( @  
import org.rut.util.algorithm.SortUtil; o5$K^2^g  
@ Q1jH~t  
/** Pd;ClMa%  
* @author treeroot Cw|SY  
* @since 2006-2-2 *nW9)T  
* @version 1.0 lM1!2d'P  
*/ ?-84_i  
public class ImprovedQuickSort implements SortUtil.Sort { G-^ccdT  
v(7A=/W_  
private static int MAX_STACK_SIZE=4096; "AK3t' jF*  
private static int THRESHOLD=10; Y)*lw  
/* (non-Javadoc) 9c7 }-Go  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8W[]#~77b  
*/ enzQ}^  
public void sort(int[] data) { eztk$o  
int[] stack=new int[MAX_STACK_SIZE]; 2,;t%GB  
!Cy2>6v7  
int top=-1; *pD;AU  
int pivot; VfcQibm  
int pivotIndex,l,r; lmcDA,7  
 ck~xj0  
stack[++top]=0; ` j<tI6[e  
stack[++top]=data.length-1; ` ;=Se_  
f,a %@WT  
while(top>0){ Lb{D5k*XU  
int j=stack[top--]; y&Hh8|'mC  
int i=stack[top--]; ZtLn*M  
?.4l1X6Ba  
pivotIndex=(i+j)/2; ibc/x v2  
pivot=data[pivotIndex]; .am*d|&+G  
~=mM/@HD  
SortUtil.swap(data,pivotIndex,j); ,h._iO)I^  
p,8Z{mLn  
file://partition bN&da [K  
l=i-1; *a%PA(%6  
r=j; ,s76]$%4  
do{ Q8q_w2s,  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Pvw%,=41O  
SortUtil.swap(data,l,r); S%fBt?-Cm  
} 7dJaWD:&   
while(l SortUtil.swap(data,l,r); k-e@G'  
SortUtil.swap(data,l,j); ~QcKW<bz  
G]1pGA;  
if((l-i)>THRESHOLD){ %nh'F6bNgv  
stack[++top]=i; j[`?`RyU  
stack[++top]=l-1; -*M:OF"Zh  
} [AzN&yACE  
if((j-l)>THRESHOLD){ fNJ;{&#  
stack[++top]=l+1; ;LE @Ezx  
stack[++top]=j; fdG.=7`  
} 3T/j5m}+!  
$\!;*SSj  
} ?63JQ.;  
file://new InsertSort().sort(data); ACYn87tq  
insertSort(data); ;alFK*K6  
} bVHi3=0{  
/** m_ m@>}ud  
* @param data OP}p;(  
*/ ,-Nk-g  
private void insertSort(int[] data) { <R>ZG"m{  
int temp; BD-=y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )x&@j4,  
} OF/)-}!  
} ! VZj!\I  
} >pvg0Fh  
=3C)sz}  
}  Zwns|23n  
r![JPhei  
归并排序: ~(/HgFLLu  
Ds_ "m,  
package org.rut.util.algorithm.support; m5aaY  
?\M6P?tpo&  
import org.rut.util.algorithm.SortUtil; k& s7 -yY  
Fd&!-` T?  
/** )>5k'1  
* @author treeroot u/c3omY"#  
* @since 2006-2-2 ]Hy PJ  
* @version 1.0 )"uG*}\?b  
*/ <,4(3 >js  
public class MergeSort implements SortUtil.Sort{ veg!mY2&  
9 /(c cj  
/* (non-Javadoc) D#1~]d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1T,PC?vr{  
*/ E_1I|$  
public void sort(int[] data) { wP0+Xv,  
int[] temp=new int[data.length]; c@7hLUaE2  
mergeSort(data,temp,0,data.length-1); TF-Ty  
} So.P @CCd  
jY+S,lD  
private void mergeSort(int[] data,int[] temp,int l,int r){ ,GU/l)os`  
int mid=(l+r)/2; ]UT|BE4v  
if(l==r) return ; gCr|e}w-  
mergeSort(data,temp,l,mid); .<^Y E%  
mergeSort(data,temp,mid+1,r); /'fDXSdP  
for(int i=l;i<=r;i++){ {WeXURp&nF  
temp=data; `lezJ (Xm  
} 7O{O')o!  
int i1=l; 89#0vG7m  
int i2=mid+1; =e8L7_;  
for(int cur=l;cur<=r;cur++){ M2Fj)w2   
if(i1==mid+1) M.N~fSJ   
data[cur]=temp[i2++]; wKS-O%?  
else if(i2>r) gam#6 s  
data[cur]=temp[i1++]; &MZy;Sq  
else if(temp[i1] data[cur]=temp[i1++]; lN>C#e<]  
else `Uj?PcS_  
data[cur]=temp[i2++]; )NmlV99q  
} uE#,c\[8  
} g)?g7{&?>?  
TTZxkK  
} F*JvpI[7n  
(2bZ]  
改进后的归并排序: !aw#',r8m  
83ic@[  
package org.rut.util.algorithm.support; S50x0$%<W  
@ PoFxv  
import org.rut.util.algorithm.SortUtil; fCf#zV[  
K}E7|gdG  
/** A :bPIXb  
* @author treeroot .n& Cq+U;  
* @since 2006-2-2 zB6u-4^wT  
* @version 1.0 ~/jxB)t  
*/ \y H3Y  
public class ImprovedMergeSort implements SortUtil.Sort {  /E{dM2  
4[,B;7  
private static final int THRESHOLD = 10; koEX4q  
UcLNMn|  
/* IgVo%)n  
* (non-Javadoc) }pE~85h4M  
* G</I%qM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v V6Lp  
*/ SU%rWH  
public void sort(int[] data) { K+@eH#Cv,(  
int[] temp=new int[data.length]; ]8m_*I!  
mergeSort(data,temp,0,data.length-1); fH e0W  
} FL#g9U>  
Ly)(_Tp@+  
private void mergeSort(int[] data, int[] temp, int l, int r) { A` o?+2s_  
int i, j, k; ;j>Vt?:Pw  
int mid = (l + r) / 2; _m7U-;G  
if (l == r) grCO-S|j^  
return; (!VMnLlXRK  
if ((mid - l) >= THRESHOLD) OVUs]uK  
mergeSort(data, temp, l, mid); Xm8Z+}i  
else I51oG:6fR?  
insertSort(data, l, mid - l + 1); J(EaE2  
if ((r - mid) > THRESHOLD) X(y  
mergeSort(data, temp, mid + 1, r); YF! &*6m  
else JU'WiR bcb  
insertSort(data, mid + 1, r - mid); d]7|v r]  
6/mkJj+"  
for (i = l; i <= mid; i++) { |ON&._`LH  
temp = data; -4?xwz9o$7  
} G=C5T(  
for (j = 1; j <= r - mid; j++) { ^0Q=#p  
temp[r - j + 1] = data[j + mid]; Q\27\2  
} C^/ -lc  
int a = temp[l]; lbB.*oQ  
int b = temp[r]; %]chL.s  
for (i = l, j = r, k = l; k <= r; k++) { m +Q5vkW  
if (a < b) { Cv>yAt.3  
data[k] = temp[i++]; 3_L1Wm  
a = temp; xz"Z3B  
} else { ^)OZ`u8  
data[k] = temp[j--]; r}oURy,5  
b = temp[j]; `&u<aLA  
} MjQ[^%lfL  
} QOT)x4!)  
} Z#4JA/c!  
r*6"'W>c6  
/** ;V(H7 ZM  
* @param data ){+[$@9  
* @param l a IpPL8a  
* @param i KbwTj*k[  
*/ kUn2RZ6$#  
private void insertSort(int[] data, int start, int len) { 2#AeN6\@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7`b lGzP_  
} }iua] 4 |  
} 9u ?)vR[@e  
} NV} RRs  
} =de<WoKnu2  
+z:CZ(fb  
堆排序: "Y G\  
O->_/_  
package org.rut.util.algorithm.support; (ve+,H6w\  
qnq%mwDeD  
import org.rut.util.algorithm.SortUtil; mW~i c  
u/gm10<OWa  
/** =PNdP  
* @author treeroot ]{IR&{EI-  
* @since 2006-2-2 lx{.H,1~  
* @version 1.0 &GdL 9!hH  
*/ r]k*7PK  
public class HeapSort implements SortUtil.Sort{ B*?ZE4`  
Hva2j<h  
/* (non-Javadoc) &l. x:eD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5-8]N>/b!  
*/ `*e4m  
public void sort(int[] data) {  6R;)  
MaxHeap h=new MaxHeap(); C9<4~IM w  
h.init(data); -6rf( ER  
for(int i=0;i h.remove(); xClRO,-  
System.arraycopy(h.queue,1,data,0,data.length);  r=fE8[,  
} t a&Q4v&-  
8To7c  
private static class MaxHeap{ &sm @  
7$(_j<o`  
void init(int[] data){ 'FShNY5  
this.queue=new int[data.length+1]; t|;%DA)fjw  
for(int i=0;i queue[++size]=data; j\2] M  
fixUp(size); |EF>Y9   
} 8#+`9GI  
} wL'oImE  
94Xjz(  
private int size=0; `[WyH O|8  
j#N(1}r=1  
private int[] queue; }*iAE>;  
89zuL18V  
public int get() { OuB2 x=B  
return queue[1]; z*6$&sS\>  
} ZV!R#Xv  
MWM +hk1fs  
public void remove() { |]^l^e 6m  
SortUtil.swap(queue,1,size--); |vv]Z(_  
fixDown(1); fC_zX}3  
} x.I][(}  
file://fixdown kr^0% A  
private void fixDown(int k) { G9\EZ\x!  
int j; '.pgXsC:=?  
while ((j = k << 1) <= size) { D899gGe  
if (j < size %26amp;%26amp; queue[j] j++; 43KaL(  
if (queue[k]>queue[j]) file://不用交换 FyCBN tCv  
break; e\`wlaP,  
SortUtil.swap(queue,j,k); z~F37]W3[  
k = j; {3_Gjb5\\4  
} Jf2e<?`  
} mv{<'  
private void fixUp(int k) { s~L`53A  
while (k > 1) { $( S*GF$S  
int j = k >> 1; .+OB!'dDK^  
if (queue[j]>queue[k]) rB,ldy,f  
break; >gr<^$  
SortUtil.swap(queue,j,k); C?,*U  
k = j; 8+9\7*  
} TZe+<~4*i%  
} wY/bA}%  
JlUb0{8PE  
} vyE{WkZxR  
5\WUoSgy  
} WhH!U0  
0}B?sNr  
SortUtil:  Q.yb4  
{o( * f  
package org.rut.util.algorithm; *m*`}9  
Wu,S\!  
import org.rut.util.algorithm.support.BubbleSort; CA/ -Gb  
import org.rut.util.algorithm.support.HeapSort; E-^2"j >o  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2SYKe$e  
import org.rut.util.algorithm.support.ImprovedQuickSort; EOhC6>ATh  
import org.rut.util.algorithm.support.InsertSort; [O\9 9>  
import org.rut.util.algorithm.support.MergeSort; "9w}dQ  
import org.rut.util.algorithm.support.QuickSort; &I%IaNco  
import org.rut.util.algorithm.support.SelectionSort; -OWZ6#v(  
import org.rut.util.algorithm.support.ShellSort; #*^e,FF<  
\Dfm(R  
/** cM3jnim  
* @author treeroot 0*/kGvw`i  
* @since 2006-2-2 +,z) #  
* @version 1.0 $%=G[/i'  
*/ 8&%Cy'TIz4  
public class SortUtil { JRXRi*@  
public final static int INSERT = 1; Apmw6cc  
public final static int BUBBLE = 2; K U $`!h  
public final static int SELECTION = 3; SyAo, )j  
public final static int SHELL = 4; E4=qh1d  
public final static int QUICK = 5; n&$/Q$d&  
public final static int IMPROVED_QUICK = 6; Bhe{L?}0  
public final static int MERGE = 7; 4Ac}(N5D@  
public final static int IMPROVED_MERGE = 8; )9B:Y;>)  
public final static int HEAP = 9; FNC[59   
1eHe~p ,  
public static void sort(int[] data) { i3P9sdTD  
sort(data, IMPROVED_QUICK); Hs$'0:  
} ~q 7;8<U  
private static String[] name={ q4/909x=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" UA0F):  
}; tF^g<)S;t  
eQ;Q4  
private static Sort[] impl=new Sort[]{ /D'M24  
new InsertSort(), J:AMnUOcDi  
new BubbleSort(), @MOCug4  
new SelectionSort(), xz8G}Ku  
new ShellSort(), FIS "Z(  
new QuickSort(), l[oe*aYN7  
new ImprovedQuickSort(), Lc|{aN  
new MergeSort(), P 6.!3%y  
new ImprovedMergeSort(), q*bt4,D&Es  
new HeapSort() tb,9a!?  
}; P\AqpQv  
t+O e)Ns  
public static String toString(int algorithm){ ,:UX<6l R  
return name[algorithm-1]; q_sEw~~@!  
} %m`zWg-  
lI6W$V\,  
public static void sort(int[] data, int algorithm) { &n>7Ir  
impl[algorithm-1].sort(data); n'M>xq_  
} o/^1Wm=  
:^#vxdIC?  
public static interface Sort { )c+k_;t'+  
public void sort(int[] data); DW>ES/B8$(  
} Z7z]2v3}c  
8I.VJ3Q  
public static void swap(int[] data, int i, int j) { ,F9nDF@)  
int temp = data; &I/qG`W  
data = data[j]; 2.nE k  
data[j] = temp; <*wM=aq  
} 8{ gXToK  
} psUE!~9,  
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