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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。 Uyx!E4pl(  
插入排序: :Bu2,EL*O  
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package org.rut.util.algorithm.support; qqrq11W  
ma'FRt  
import org.rut.util.algorithm.SortUtil;  Q6'x\  
/** 03E4cYxt5  
* @author treeroot uvP2Wgt  
* @since 2006-2-2 YjOs}TD lx  
* @version 1.0 ' Z0r>.  
*/ jw<pK4?y  
public class InsertSort implements SortUtil.Sort{ 29CINC  
a ] =  
/* (non-Javadoc) jO*l3:!~\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UhA"nt0  
*/ :+Om]#`Vls  
public void sort(int[] data) { :0 & X^]\  
int temp; k@ZLg9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2_vbT!_  
} B33$pUk  
} ABE@n%|`  
} I$N8tn+E  
b2b?hA'k  
} <Rh6r}f  
r}[7x]sP  
冒泡排序: Mi'8 ~J  
26T"XW'_  
package org.rut.util.algorithm.support; ] e. JNo  
5%sE] Y#  
import org.rut.util.algorithm.SortUtil; 2MZCw^s>  
{:@tQdM:i8  
/** B#/Q'V  
* @author treeroot ;4N;D  
* @since 2006-2-2 >h0-;  
* @version 1.0 *HEuorl  
*/ >D201&*G%  
public class BubbleSort implements SortUtil.Sort{ )jrV#/m9  
/|6;Z}2  
/* (non-Javadoc) L_=3<n E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3bnS W5  
*/ jReXyRmo({  
public void sort(int[] data) { GFr|E8  
int temp; jck}" N  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2^i(gaXUQ  
if(data[j] SortUtil.swap(data,j,j-1); a5a($D  
} pPd#N'\*  
} 9]q:[zm^  
} yR(x+ Gs{]  
} T)r9-wOq  
a!O0,y  
} Q0EiEX)  
8Q_SRwN  
选择排序: >jD[X5Y  
p<M\U"5Ye  
package org.rut.util.algorithm.support; Y>'|oygHA  
kbM3  
import org.rut.util.algorithm.SortUtil; 5mb]Q)f9-  
*/|BpakD<  
/** yj^+ G  
* @author treeroot pAT7)Ch  
* @since 2006-2-2 M(/r%-D  
* @version 1.0 g<~Cpd  
*/ !.d@L6  
public class SelectionSort implements SortUtil.Sort { 9k{PBAP  
b0oMs=uBn  
/* -[-wkC8a  
* (non-Javadoc) B(M6@1m_  
* ..rOsg{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0jEL<TgC  
*/ n=[/Z!  
public void sort(int[] data) { =:~R=/ZXk  
int temp; 9-MUX^?u  
for (int i = 0; i < data.length; i++) { 7hsGua  
int lowIndex = i; 5LOo8xN  
for (int j = data.length - 1; j > i; j--) { ,c NLkoN  
if (data[j] < data[lowIndex]) { eUg~)m5G  
lowIndex = j; e=.]F*:J  
} -Z's@'*  
} VNY%R,6  
SortUtil.swap(data,i,lowIndex); D*lKn62  
} K5lmVF\$P  
} EY tQw(!Q  
f k&8]tK4  
} 1')%`~  
t<#h$}=:Vt  
Shell排序: b9!FC$^J  
6Oy$gW)  
package org.rut.util.algorithm.support; )rC6*eR  
<)3u6Vky9  
import org.rut.util.algorithm.SortUtil; 0=?<y'=  
9g<7i  
/** =zz ~kon9  
* @author treeroot AB4(+S*LA  
* @since 2006-2-2 :8OZ#D_Hl  
* @version 1.0 D|{jR~J)xK  
*/ ga`3 (  
public class ShellSort implements SortUtil.Sort{ V;v8=1t!  
=|Y,+/R?  
/* (non-Javadoc) s=;uc] 9g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !4X f~P  
*/ b}"N`,0dO  
public void sort(int[] data) { }|pwz   
for(int i=data.length/2;i>2;i/=2){ R#I0|;q4|p  
for(int j=0;j insertSort(data,j,i); Hg=";,J  
} ZusEfh?  
} z*!%g[3I  
insertSort(data,0,1); I"A_b}~*}  
} /#)/;  
xsD($_  
/** Ck) * &  
* @param data s6@DGSJ  
* @param j 4GX-ma,  
* @param i  B\o Mn  
*/ }n>p4W"OM  
private void insertSort(int[] data, int start, int inc) { H["`Mn7j2  
int temp; :0Rx#%u}#  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); E4M@WNPx  
} vwxXgk  
} GJ_7h_4  
} r2,.abo  
N(Fp0  
} {A05u3}  
'ZDp5pCC;  
快速排序: .N ,3 od@  
_I:/ZF5  
package org.rut.util.algorithm.support; +nJgl8'^y  
,Y/ g2 4R  
import org.rut.util.algorithm.SortUtil; !:q/Ye3.  
,X`)ct  
/** sTn<#l6  
* @author treeroot hHV";bk  
* @since 2006-2-2 e,W%uH>X  
* @version 1.0 NTYg[VTr  
*/ %H]ptH5  
public class QuickSort implements SortUtil.Sort{ ?#}N1k\S  
=A83W/4  
/* (non-Javadoc) pHLB= r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hEKf6#  
*/ Z{]0jhUyNh  
public void sort(int[] data) { cj$[E]B3V*  
quickSort(data,0,data.length-1); UG+d-&~Ll  
} 5kCUaPu  
private void quickSort(int[] data,int i,int j){ v|dBSX9k0  
int pivotIndex=(i+j)/2; 6WXRP;!Q  
file://swap CxwoBuG=?  
SortUtil.swap(data,pivotIndex,j); H9YW  
Y^$X*U/q%U  
int k=partition(data,i-1,j,data[j]); Y 0d<~*  
SortUtil.swap(data,k,j); t gI{`jS%  
if((k-i)>1) quickSort(data,i,k-1); TFlet"ge=  
if((j-k)>1) quickSort(data,k+1,j); j+$rj  
]:XoRyIZ1[  
} (|klSz_4LM  
/** 9\_eK,*B  
* @param data ;$.J3!  
* @param i Egg=yF>T  
* @param j X=5xh  
* @return A%KDiIA  
*/ CDQW !XHc  
private int partition(int[] data, int l, int r,int pivot) { =8AO:  
do{ K,+LG7ec  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~A'!2  
SortUtil.swap(data,l,r); }`% *W`9b  
} J&W)(Cf  
while(l SortUtil.swap(data,l,r); 3@dL /x4A  
return l; v0z5j6)-1  
} 7z JRJ*NB  
^c-  
} (l^3Z3zf&  
2 ^h27A  
改进后的快速排序: <m)$K  
D$ dfNiCH  
package org.rut.util.algorithm.support; Xg|B \ \  
/:~\5}tW  
import org.rut.util.algorithm.SortUtil; 6e9,PS  
+6HVhoxU#  
/** [>8}J "  
* @author treeroot T@2#6Tffo  
* @since 2006-2-2 #`CA8!j!!  
* @version 1.0 Z}mLLf E  
*/ 7puFz4+f  
public class ImprovedQuickSort implements SortUtil.Sort { ObVGV  
CZud& <  
private static int MAX_STACK_SIZE=4096; 2@'oe7E  
private static int THRESHOLD=10; Mm.<r-b  
/* (non-Javadoc) ORe(]I`Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /uPcXq:L~  
*/ _x%7@ .TB  
public void sort(int[] data) { y{ibO}s  
int[] stack=new int[MAX_STACK_SIZE]; uwzvbgup?  
[$0p+1  
int top=-1; ~zCEpU|@N  
int pivot; -JMdE_h  
int pivotIndex,l,r; {.?ZHy\Rk  
*H"B _3<n  
stack[++top]=0; cv998*|X:  
stack[++top]=data.length-1; Ktb\ bw  
xST8|H  
while(top>0){ 5D\f8L  
int j=stack[top--]; JjPKR?[>  
int i=stack[top--]; PF)jdcX  
adCU61t  
pivotIndex=(i+j)/2; -lbm* -(  
pivot=data[pivotIndex]; XG{{ 2f  
$$|rrG  
SortUtil.swap(data,pivotIndex,j); F, W~,y  
"-e \p lKj  
file://partition TSTl+W  
l=i-1; =mS\i663  
r=j; nKPYOY8^  
do{ )97SnCkal  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `eE&5.   
SortUtil.swap(data,l,r); hn5h\M?  
} Zn&, t &z  
while(l SortUtil.swap(data,l,r); K0-ypU*P  
SortUtil.swap(data,l,j); _ky,;9G]  
5]KW^sL  
if((l-i)>THRESHOLD){ %<k2#6K  
stack[++top]=i; Gw>^[dmt!  
stack[++top]=l-1; .AR#&mL9  
} d4u})  
if((j-l)>THRESHOLD){ e@Fo^#ImDx  
stack[++top]=l+1; -~s!73pDY  
stack[++top]=j; Rp.Sj{<2  
} 6h|q'.Y  
z.7cy@N6  
} rID#`:Hl-|  
file://new InsertSort().sort(data); !}YAdZJ  
insertSort(data); %`>nS@1zp  
} N4^-`  
/** \|H!~)h$1  
* @param data %eX{WgH  
*/ E@@5BEB ~  
private void insertSort(int[] data) { 'Y*E<6:  
int temp; 15%w 8u  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '8Q]C*Z  
} +c(zo4nZ  
} ^T*?>%`  
} !nqUBa  
1C< uz29  
} u[@l~gwL  
l1T m`7}  
归并排序: g[1gF&  
>6NRi/[  
package org.rut.util.algorithm.support; rf $QxJ  
o)Iff)m$  
import org.rut.util.algorithm.SortUtil; Li!Vx1p;u.  
)m`<H>[Eb=  
/** "S8uoSF`>  
* @author treeroot vMA]j>>  
* @since 2006-2-2 n!YKz"$  
* @version 1.0 hBS.a6u1'd  
*/ f%SZg!+t  
public class MergeSort implements SortUtil.Sort{ DK$X2B"cV  
JLnH&(O  
/* (non-Javadoc) RHmgD;7`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >"|B9Woc  
*/ I;e=0!9U  
public void sort(int[] data) { \n$u)Xj~6^  
int[] temp=new int[data.length]; ,5i`-OI  
mergeSort(data,temp,0,data.length-1); W#^2#sjO  
} 0 t Fkd  
^A!Qc=#z}  
private void mergeSort(int[] data,int[] temp,int l,int r){ ;T"zV{;7BR  
int mid=(l+r)/2; _"E%xM*r  
if(l==r) return ; / : L?~  
mergeSort(data,temp,l,mid); #yI mKEYX  
mergeSort(data,temp,mid+1,r); d:#yEC  
for(int i=l;i<=r;i++){ _2h S";K  
temp=data; ti5mIW\  
} GC>e26\:  
int i1=l; 8B /\U'  
int i2=mid+1; s8ywKTR-  
for(int cur=l;cur<=r;cur++){ S]bmS6#  
if(i1==mid+1) q1z"-~i )E  
data[cur]=temp[i2++]; Jy)KqdkX+  
else if(i2>r) /j4P9y^]=  
data[cur]=temp[i1++]; ".W8)  
else if(temp[i1] data[cur]=temp[i1++]; <vUbv   
else Z3#P,y9@  
data[cur]=temp[i2++]; KV}FZ3jY  
} qs1 ?IYD  
} m+b):  
?%O(mC]u&  
} '?!zG{x  
~k!j+>yT  
改进后的归并排序: 4,sJE2"[9  
\?Z{hmN  
package org.rut.util.algorithm.support; Q3 u8bx|E  
w\(.3W7  
import org.rut.util.algorithm.SortUtil; NL!u<6y  
0O9Ni='Tn  
/** >OL3H$F  
* @author treeroot /q<__N  
* @since 2006-2-2 nH`Q#ZFz]?  
* @version 1.0 {t0) q  
*/ q|j2MV5#g  
public class ImprovedMergeSort implements SortUtil.Sort { W{5#@_pL  
{1IfU  
private static final int THRESHOLD = 10; 5k`l $mW{  
%6t2ohO"  
/* )Hpa}FGT  
* (non-Javadoc) Z)! qW?  
* Ka[t75~;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QIB\AAclO  
*/ uehDIl0\[b  
public void sort(int[] data) { I/&%]"[^u  
int[] temp=new int[data.length]; **$LR<L  
mergeSort(data,temp,0,data.length-1); Gcdd3W`O  
} .}q&5v  
A;*d}Xe&J  
private void mergeSort(int[] data, int[] temp, int l, int r) { ] Bcp;D  
int i, j, k; E;Y;z  
int mid = (l + r) / 2; GO__$%~  
if (l == r) 55tKTpV  
return; v*;-yG&  
if ((mid - l) >= THRESHOLD) ex::m&  
mergeSort(data, temp, l, mid); ]b\yg2  
else 23c 8  
insertSort(data, l, mid - l + 1); M[mF8Zf  
if ((r - mid) > THRESHOLD) %e-7ubW  
mergeSort(data, temp, mid + 1, r); zb k q   
else ^5H >pat  
insertSort(data, mid + 1, r - mid); .$qnZWcgG  
<R''oEf9  
for (i = l; i <= mid; i++) { F$ #U5}Q  
temp = data; 1`(tf6op  
} p^Ak1qm~e  
for (j = 1; j <= r - mid; j++) { jFASX2.p  
temp[r - j + 1] = data[j + mid]; S<VSn}vn  
} <J`0mVOX  
int a = temp[l]; g'H$R~ag  
int b = temp[r]; ^su<uG<R  
for (i = l, j = r, k = l; k <= r; k++) { jzDuE{  
if (a < b) { d Vj_8>  
data[k] = temp[i++]; z2g3FUTX)b  
a = temp; VKq=7^W  
} else { :pGaFWkvO  
data[k] = temp[j--]; 4Uphfzv3D  
b = temp[j]; o=50>$5jlS  
} 7s/u(~d)  
} vr6MU<  
} cd(GvX'  
H,DM1Z9rz  
/** V!lZ\)  
* @param data lr`&mZ( j  
* @param l qAn!RkA  
* @param i pi Z[Y 5OE  
*/ OW3sS+y  
private void insertSort(int[] data, int start, int len) { w2 a1mU/  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \HKxh:F'  
} YL]Z<%aKt  
} 5Ow[~p"l<  
} vRs,zL$W  
} TygW0b 1  
8n'B6hi  
堆排序: :c8&N-`  
E^vJ@O  
package org.rut.util.algorithm.support; \#Pfj &*  
.}OR  
import org.rut.util.algorithm.SortUtil; _a6[{_Pc  
~yH?=:>U  
/** swM*k;$q{  
* @author treeroot AS =?@2 q  
* @since 2006-2-2 ^>jwh  
* @version 1.0 Xc?&_\. +  
*/ .?R!DYC`  
public class HeapSort implements SortUtil.Sort{ }T&iewk  
XZ^^%*ew  
/* (non-Javadoc) {ys=Ndo8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v2B0q4*BS?  
*/ =<?+#-;p  
public void sort(int[] data) { -Z 4e.ay5  
MaxHeap h=new MaxHeap(); 555XCWyrC  
h.init(data); -_1>C\h"  
for(int i=0;i h.remove(); wB!Nc Y\p  
System.arraycopy(h.queue,1,data,0,data.length); WU71/PYm`  
} 1JztFix  
xT   
private static class MaxHeap{ .(^ ,z&  
f33l$pOp  
void init(int[] data){ - `p4-J!Fy  
this.queue=new int[data.length+1]; ] Hztb  
for(int i=0;i queue[++size]=data; 2/"u5  
fixUp(size); IIn"=g=9  
} G/7cK\^u  
} ?d{Na= O\  
xx#zN0I>-y  
private int size=0; `< xn8h9p  
3HcQ(+Z  
private int[] queue; nlW +.a[  
7ccO93Mz  
public int get() { j2QmxTa!  
return queue[1]; /SrCElabP  
} 45,1-? -!  
?u" 4@  
public void remove() { mF,Y?ax  
SortUtil.swap(queue,1,size--); zi]\<?\X  
fixDown(1); &Low/Y'.jJ  
} |}(`kW  
file://fixdown FaDjLo2'o  
private void fixDown(int k) { mP0yk|  
int j; m^ tFi7c  
while ((j = k << 1) <= size) { y:~ZLTAv  
if (j < size %26amp;%26amp; queue[j] j++; rA%usaW  
if (queue[k]>queue[j]) file://不用交换 -o $QS,  
break; '}B+r@YCN  
SortUtil.swap(queue,j,k); Q9Kve3u-i  
k = j; Gn ~6X-l  
} G!>z;5KuS  
} e\!0<d  
private void fixUp(int k) { t!r A%*  
while (k > 1) { ihIVUu-M  
int j = k >> 1; Kx;eaz:gx  
if (queue[j]>queue[k]) eHn7iuS8  
break; <vONmE a  
SortUtil.swap(queue,j,k); __|+w<]  
k = j; .QZaGw=,z  
} + HK8jCa  
} i3 6eBjT  
 SL#0kc0x  
} U%q7Ai7  
}BZ"S-hZ  
} ]yK7PH-{L  
BG6B :  
SortUtil: OY;*zk  
AiEd!u.  
package org.rut.util.algorithm; ~Y|*`C_)  
@mw5~+  
import org.rut.util.algorithm.support.BubbleSort; k <=//r  
import org.rut.util.algorithm.support.HeapSort; ca7=V/i_a{  
import org.rut.util.algorithm.support.ImprovedMergeSort; ;7?kl>5]  
import org.rut.util.algorithm.support.ImprovedQuickSort; wt!nMQ  
import org.rut.util.algorithm.support.InsertSort; /s@oZ{h  
import org.rut.util.algorithm.support.MergeSort; VyzS^AH K  
import org.rut.util.algorithm.support.QuickSort; e4HA7=z  
import org.rut.util.algorithm.support.SelectionSort; =5/9%P8j9  
import org.rut.util.algorithm.support.ShellSort; 8<8:+M}  
pTPi@SBaP{  
/** lI*o@wQg  
* @author treeroot !F A]  
* @since 2006-2-2 6p?,(  
* @version 1.0 jL%x7?*U0  
*/ /& Jan:  
public class SortUtil { ADDSCY=,  
public final static int INSERT = 1; ++6`sMJ  
public final static int BUBBLE = 2; pEBM3r!X  
public final static int SELECTION = 3; (tIo:j  
public final static int SHELL = 4; gy#/D& N[  
public final static int QUICK = 5; 3RYpJAH  
public final static int IMPROVED_QUICK = 6; u%}nw :>  
public final static int MERGE = 7; e1%/26\  
public final static int IMPROVED_MERGE = 8; 5*lT.  
public final static int HEAP = 9; [N7{WSZ&  
F`gi_; c  
public static void sort(int[] data) { 0ZZZoP o  
sort(data, IMPROVED_QUICK); %E#s\B,w  
} _ba>19csq%  
private static String[] name={ #gz M|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9$cWU_q{  
}; /67 h&j  
g.BdlVB\  
private static Sort[] impl=new Sort[]{ q"\Z-D0B4  
new InsertSort(), 7gj4j^a^]{  
new BubbleSort(), AgS 7J(^&3  
new SelectionSort(), wQ^EYKD  
new ShellSort(), -:|?h{q?u  
new QuickSort(), `o=q%$f#k~  
new ImprovedQuickSort(), }4 )H   
new MergeSort(), iII=;:p  
new ImprovedMergeSort(), )wC?T  
new HeapSort() Q.l}NtHwV  
}; uJzG|$;  
@;*Ksy@1O  
public static String toString(int algorithm){ (s.0P O`  
return name[algorithm-1]; c6h.iBJ'  
} c 0,0`+2~  
sDPs G5q<  
public static void sort(int[] data, int algorithm) { o /j*d3  
impl[algorithm-1].sort(data); (;T^8mI2  
} :r{<zd>;  
/]K^ rw[  
public static interface Sort { a1EOJ^}0  
public void sort(int[] data); &"yx<&c}  
} ]^h]t~  
T|nDTezr  
public static void swap(int[] data, int i, int j) { z@!`:'ak  
int temp = data; "W6uV!  
data = data[j]; OLyf8&AU@  
data[j] = temp; gG0!C))8  
} BXtCSfY $  
} 4Jp:x"w  
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