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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。 Y367Jr@^N  
插入排序: bvpP/LeY  
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package org.rut.util.algorithm.support; `*Ar6  
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import org.rut.util.algorithm.SortUtil; hqr V {c  
/** t.f#_C\  
* @author treeroot mV\QZfoF  
* @since 2006-2-2 n\CQ-*;l  
* @version 1.0 6<E4?<O%  
*/ 2pu8')'P  
public class InsertSort implements SortUtil.Sort{ g3*" ^C2=  
#I]5)XT  
/* (non-Javadoc) .~>Uh3S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AC'$~4  
*/ 9j6# #@{  
public void sort(int[] data) { ^dc~hD  
int temp; !w+A3Z>V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~x}/>-d  
} >'\cNM~nf  
} &tKr ?l  
} WcE{1&PXx  
? dD<KCbP,  
} q>JW$8  
'8O(J7J  
冒泡排序: yDk|ad|  
 ^##tk  
package org.rut.util.algorithm.support; lL6 bIjf  
dM|&Y6  
import org.rut.util.algorithm.SortUtil; 7*D*nY4+  
MJxTzQE  
/** *cNqgw#\qL  
* @author treeroot *C>B-j$  
* @since 2006-2-2 Ry5/O?Q L  
* @version 1.0 `F)Q=  
*/ eYJ6&).F  
public class BubbleSort implements SortUtil.Sort{ Y%1 J[W  
6L`{oSX!  
/* (non-Javadoc) Q $wa<`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _!m_s5{  
*/ N9lCbtn(0x  
public void sort(int[] data) { j9sK P]w  
int temp; oSDx9%  
for(int i=0;i for(int j=data.length-1;j>i;j--){ jSY&P/[ xb  
if(data[j] SortUtil.swap(data,j,j-1); ~}B6E)   
} aahAUhF  
} H\Bh Af  
} @I`X{oAA  
} +@ '( N  
_'g'M=E  
} g\Gx oR  
w>RBth^p  
选择排序: hX?rIx  
( Lp~:p  
package org.rut.util.algorithm.support; -85]x)JE  
~hJ/&,vH!  
import org.rut.util.algorithm.SortUtil; u!iBAr5  
J|ni'Hb  
/** ubq4Zv7'   
* @author treeroot hN~]$"@2  
* @since 2006-2-2 8(GH.)I+0  
* @version 1.0 Mo4#UV  
*/ <4caG2~q  
public class SelectionSort implements SortUtil.Sort { m~upTQz  
8|\0\Wd;vu  
/* ct,Iu+HJ  
* (non-Javadoc) m5m'ByX(*  
* Y5J}*`[Mr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @O~  
*/ ;H%&Jht  
public void sort(int[] data) { T2;%@Ghc  
int temp; hWzjn5w3  
for (int i = 0; i < data.length; i++) { j\,HquTR  
int lowIndex = i; 37 #|X*L  
for (int j = data.length - 1; j > i; j--) { KK}?x6wV0,  
if (data[j] < data[lowIndex]) { 7N@4c   
lowIndex = j; P|rsq|',  
} Afpj*o  
} i&|fGX?-I  
SortUtil.swap(data,i,lowIndex); gH{X?  
} +3@d]JfMh  
} yQ^k%hHa  
6mFH>T*jzH  
} D)yCuw{M:  
XDtr{r6z  
Shell排序: d+ LEi^  
:'\4%D=w  
package org.rut.util.algorithm.support; w&A &BE^O/  
^qs{Cf$  
import org.rut.util.algorithm.SortUtil; )X8?m <cG  
3ug|H  
/** W%/lBkP  
* @author treeroot ! 11x&Db  
* @since 2006-2-2 50s)5G#  
* @version 1.0 ^H0`UKE  
*/ fB \+.eN  
public class ShellSort implements SortUtil.Sort{ AnB]f~Yjl  
9t`Z_HwdCb  
/* (non-Javadoc) MhE'_sq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 *Fr=+KN  
*/ @,b:s+]rp  
public void sort(int[] data) { bzz{ p1e  
for(int i=data.length/2;i>2;i/=2){ -EwtO4vLJ  
for(int j=0;j insertSort(data,j,i); Fx^e%":@ip  
} x~7_`=}rO  
} |FF"vRi8a7  
insertSort(data,0,1); Z*/*P4\  
} f87> ul!*  
'rT@r:6fn  
/** =Mg/m'QI  
* @param data S6.N)7y  
* @param j 1|_8+)i;  
* @param i Dv7/eRt  
*/ f8>S<:  
private void insertSort(int[] data, int start, int inc) { :z;}:+7n  
int temp; gk%8iT  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8,E#vQ55}(  
} |]qwD,eiH,  
} 1[QH68  
} $VX<UK$|s  
P #_8$#G3  
} B3p[A k  
j Hd <*  
快速排序: %h "+J  
6bL"ZOEu  
package org.rut.util.algorithm.support; 9*?H/iN@p?  
}v0IzGKs  
import org.rut.util.algorithm.SortUtil; 0baq696<F  
aLwd#/!  
/** Dxc`K?M   
* @author treeroot S-FoyID\H  
* @since 2006-2-2 \O]1QM94Y  
* @version 1.0 ` ,B&oV>  
*/ &FQ]`g3_@  
public class QuickSort implements SortUtil.Sort{ 8&AHu  
hFC4CqBV  
/* (non-Javadoc) $,vZX u|Qw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w|6;Pf~1y)  
*/ _$OhV#LKG  
public void sort(int[] data) { 9]Q\Pr\Ub$  
quickSort(data,0,data.length-1); G$ l>By  
} %cM2;a=2  
private void quickSort(int[] data,int i,int j){ # ;,b4O7@  
int pivotIndex=(i+j)/2; 5 =Os sAr  
file://swap )N{Qpbh  
SortUtil.swap(data,pivotIndex,j); 2<$C6J0HM  
sLx!Do$'  
int k=partition(data,i-1,j,data[j]); b"Hg4i)  
SortUtil.swap(data,k,j); H}}]Gh.T  
if((k-i)>1) quickSort(data,i,k-1); i!/V wGg  
if((j-k)>1) quickSort(data,k+1,j); LK8K=AA3P  
Qp{rAAC:  
} []K5l%  
/** /rd6p{F  
* @param data wW4/]soM  
* @param i v= b`kCH}  
* @param j H6<\7W89y  
* @return uJ S+;H  
*/ jW6~^>S  
private int partition(int[] data, int l, int r,int pivot) { q#v&&]N=  
do{ Sd]`I)  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xUYUOyV  
SortUtil.swap(data,l,r); Pnb?NVP!^9  
} Y(WX`\M97  
while(l SortUtil.swap(data,l,r); YoD1\a|  
return l; cad%:%p  
} Ez^U1KKOE7  
/*Z ,i&eC  
} ;0V{^  
XVi?- /2  
改进后的快速排序: X*F#=.lh  
)W&H{2No  
package org.rut.util.algorithm.support; *Yk3y-   
d+KLtvB%M  
import org.rut.util.algorithm.SortUtil; WU-.lg'c'  
C& 0iWY\a  
/** /nEh,<Y)  
* @author treeroot #vJDb |z  
* @since 2006-2-2 &Y"u*)bm  
* @version 1.0 "}PaMR]  
*/ D_,}lsrb  
public class ImprovedQuickSort implements SortUtil.Sort { -#v1b>ScY  
=@b/Gl  
private static int MAX_STACK_SIZE=4096; >^%]F[Wo  
private static int THRESHOLD=10; %WrUu|xj>_  
/* (non-Javadoc) < J=9,tv<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |$`LsA.  
*/ m(nGtrQJm  
public void sort(int[] data) { V7u;"vD  
int[] stack=new int[MAX_STACK_SIZE]; T78`~-D4<  
l]whL1N3  
int top=-1; kUAjQ>  
int pivot; ]zHUF!a*  
int pivotIndex,l,r; x$9UHEb kM  
^JF6L`Tp  
stack[++top]=0; p=6Q0r|'  
stack[++top]=data.length-1; >\hu1C|W  
W:{1R&$l  
while(top>0){ +*[lp@zU{  
int j=stack[top--]; ;4of7d  
int i=stack[top--]; kS[xwbE  
.63:G<  
pivotIndex=(i+j)/2; 5haJPWG|'  
pivot=data[pivotIndex]; C|c'V-f  
d^X;XVAvP  
SortUtil.swap(data,pivotIndex,j); h^ ex?  
DPn]de:e  
file://partition M xUj7ae  
l=i-1; RKaCX:  
r=j; hKb-l`KO  
do{ me@4lHBR  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4w0 &f  
SortUtil.swap(data,l,r); A P><l@  
} g"|QI=&_J  
while(l SortUtil.swap(data,l,r); o Y_(UIa  
SortUtil.swap(data,l,j); O<l_2?S1  
M(o?I}  
if((l-i)>THRESHOLD){ l)`bm/k]V  
stack[++top]=i; y4s]*?Wz  
stack[++top]=l-1; 1]#qxjZ~  
} ]O s!=rt  
if((j-l)>THRESHOLD){ ),5^bl/  
stack[++top]=l+1; <R>qOX8  
stack[++top]=j; 9RwD_`D(MN  
} HF}%Ow  
H27_T]\  
} TI:-Y@8  
file://new InsertSort().sort(data); T1?fC)  
insertSort(data); s=Pwkte  
} +N2?fgA  
/** dK,j|  
* @param data 0EfM~u  
*/ ,g%2-#L%  
private void insertSort(int[] data) { {E!ie{~  
int temp; r6&f I"Yg  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QbqEe/*$_  
} }X94M7+->  
}  49&p~g  
} : 'M$:ZJ  
\;&9h1?Mn  
} NxVqV5 '  
j[Uul#  
归并排序: 0XFJ/  
O=8:K'  
package org.rut.util.algorithm.support;  .BJ;}  
ac6Lv}w_  
import org.rut.util.algorithm.SortUtil; Y~(#_K  
U'@eUY(Ov$  
/** y ?]G OQI  
* @author treeroot vK)^;T ;  
* @since 2006-2-2 DSad[>Uj],  
* @version 1.0 xJrRJwL  
*/ #+V-65v  
public class MergeSort implements SortUtil.Sort{ <SmXMruU  
l'HrU 1_7Y  
/* (non-Javadoc) B!H4 6w~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jSp4eq  
*/ "WR)a`$UR  
public void sort(int[] data) { =8[4gM+  
int[] temp=new int[data.length]; @x?7J@:  
mergeSort(data,temp,0,data.length-1); Fp..Sjh 6  
} p< Emy%  
j@$p(P$  
private void mergeSort(int[] data,int[] temp,int l,int r){ iZ2|/hnw  
int mid=(l+r)/2; rr>*_67-:  
if(l==r) return ; UbKdB  
mergeSort(data,temp,l,mid); V6Ie\+@.\  
mergeSort(data,temp,mid+1,r); XNkw9*IT  
for(int i=l;i<=r;i++){ p6u"$)wt  
temp=data; = 7pLU+ u  
} j4Ppn  
int i1=l; &NiDv   
int i2=mid+1; A$.woE@  
for(int cur=l;cur<=r;cur++){ l/0TNOA  
if(i1==mid+1) .dwb@$  
data[cur]=temp[i2++]; /M(FuV  
else if(i2>r) Q`}1 B   
data[cur]=temp[i1++]; #aUe7~  
else if(temp[i1] data[cur]=temp[i1++]; pfsRV]  
else k ]C+/  
data[cur]=temp[i2++]; n.P$7%G`2  
} jrT5Rw_}q  
} Wo&10S w  
\hv1"WaJ  
} ?LAKH$t  
Ex^|[iV  
改进后的归并排序: bv ,_7UOG  
4L\bT;dQ|.  
package org.rut.util.algorithm.support; $$`E@\5P  
i2`i5&*  
import org.rut.util.algorithm.SortUtil; "mr;|$Y  
i3g;B?54  
/** TWE$@/9)g  
* @author treeroot M6U/. n  
* @since 2006-2-2 os*QWSs  
* @version 1.0 |9. `qv  
*/ 0p\R@{  
public class ImprovedMergeSort implements SortUtil.Sort { fXCx!3m  
^,[V;3  
private static final int THRESHOLD = 10; 6N[XWyS  
d51l7't  
/* 4SSq5Ve<  
* (non-Javadoc) (r,tU(  
* d4<Ic#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uV?[eiezD0  
*/ R06q~ >  
public void sort(int[] data) { Qag@#!&n  
int[] temp=new int[data.length]; E8#r<=(m  
mergeSort(data,temp,0,data.length-1);  so_  
} +o})Cs`|=A  
H)aeS F5  
private void mergeSort(int[] data, int[] temp, int l, int r) { GPnd7}Tn  
int i, j, k; HT7V} UiaO  
int mid = (l + r) / 2; C(7uvQ  
if (l == r) xb$eFiQ  
return; +V*FFv  
if ((mid - l) >= THRESHOLD) Un\h[m  
mergeSort(data, temp, l, mid); )? WiO}"  
else OLpE0gZ.|`  
insertSort(data, l, mid - l + 1); v`8dRVN  
if ((r - mid) > THRESHOLD) y)_T!&ze  
mergeSort(data, temp, mid + 1, r); Pda(O;aNU  
else -#T?C ]}  
insertSort(data, mid + 1, r - mid); I;kKY  
is_`UDaB  
for (i = l; i <= mid; i++) { bJ8G5QU  
temp = data; O.4ty)*  
} (m|w&oA/  
for (j = 1; j <= r - mid; j++) { RkP g&R;i  
temp[r - j + 1] = data[j + mid]; v WKUV|  
} FRpTYLA2  
int a = temp[l]; hp?hb-4l  
int b = temp[r]; H^P uC (  
for (i = l, j = r, k = l; k <= r; k++) { +FiM?,G  
if (a < b) { ._JM3o}F  
data[k] = temp[i++]; ZZqImB.Cz6  
a = temp; )u~LzE]{_  
} else { Xao 0cb.R  
data[k] = temp[j--]; :=x-b3U  
b = temp[j]; =BW>jD  
} J8w#J  
} gHc0n0ZV  
} 5]n5nqz  
c%Ht; sK`*  
/** JI-q4L|  
* @param data AK%2#}k.  
* @param l FaO1?.  
* @param i f6n'g:&.W  
*/ IKSe X  
private void insertSort(int[] data, int start, int len) { e -vL!&;2  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); H/m -$;cF3  
} CbTYt6DC  
} 6u^M fOc  
} rxtp?|v9  
} r<4FF=  
+BcJHNIB  
堆排序: v#i,pBj  
2OFrv=F  
package org.rut.util.algorithm.support; 3]Rb2$p[=  
J{c-'Of2yi  
import org.rut.util.algorithm.SortUtil; `[x`#irD  
iDej{95  
/** xKIzEN &  
* @author treeroot "F%w{bf  
* @since 2006-2-2 m }I@:s2  
* @version 1.0 d;UP|c>2  
*/ :/'2@M  
public class HeapSort implements SortUtil.Sort{ 3n-~+2l  
9fR`un)f}  
/* (non-Javadoc) y\7 -!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vL~nJv  
*/ Ig*68M<  
public void sort(int[] data) { 2:0'fNXop  
MaxHeap h=new MaxHeap(); =jZ}@L/+  
h.init(data); )Cl!,m)~  
for(int i=0;i h.remove(); NU>={9!  
System.arraycopy(h.queue,1,data,0,data.length); u'}SaX]0  
} m3zmyw}  
CC,_I>t  
private static class MaxHeap{ :^".cs?g  
luD.3&0n  
void init(int[] data){ W.b?MPy]  
this.queue=new int[data.length+1]; b,U"N-6  
for(int i=0;i queue[++size]=data; 1s5F jD?M  
fixUp(size); lJHV c"*/  
} ^b)8l  
} g/Q hI  
]#>;C:L  
private int size=0; 8$</HNu,  
Z%_"-ENT  
private int[] queue; [>l 2E  
QT X5F5w  
public int get() { w~EBm=v_>  
return queue[1]; 1"k"<{%  
} ir^%9amh  
Dj!v+<b  
public void remove() { ;w,+x 7  
SortUtil.swap(queue,1,size--); 8nn%wps  
fixDown(1); .*+?]  
} 9Qja|;  
file://fixdown CD|)TXy  
private void fixDown(int k) { PMPB}-d  
int j; .{U@Hva_K  
while ((j = k << 1) <= size) { ?CSc5b`eo  
if (j < size %26amp;%26amp; queue[j] j++; gaeMcL_^a  
if (queue[k]>queue[j]) file://不用交换 8!87p?Mz  
break; R_iQLBrd  
SortUtil.swap(queue,j,k); f4F13n_0X  
k = j; wxw3t@%mNm  
} hxcRFqX"  
} 9 -7.4!]I  
private void fixUp(int k) { U1zcJ l^  
while (k > 1) { m]t`;lr<  
int j = k >> 1; HmxA2 ~C  
if (queue[j]>queue[k]) k@QU<cvI  
break; V 2-fJ!  
SortUtil.swap(queue,j,k); _?]E)i'RI  
k = j; w7d(|`  
} CMk0(sztU_  
} Y"J' 'K  
q)S70M_1  
} x;d*?69f]  
UuDs  
} [k)xn3[  
AWkXW l}  
SortUtil: dN'2;X  
Jo%5NXts4  
package org.rut.util.algorithm; .~J}80a/  
dUAZDoLi  
import org.rut.util.algorithm.support.BubbleSort; :oRR1k  
import org.rut.util.algorithm.support.HeapSort; 8^bc4(H  
import org.rut.util.algorithm.support.ImprovedMergeSort; 7R W5U'B  
import org.rut.util.algorithm.support.ImprovedQuickSort; Ww8<f$  
import org.rut.util.algorithm.support.InsertSort; 05_aL` &eb  
import org.rut.util.algorithm.support.MergeSort; =2;2_u?  
import org.rut.util.algorithm.support.QuickSort; -"m4 A0  
import org.rut.util.algorithm.support.SelectionSort; 3/+r*lv>X  
import org.rut.util.algorithm.support.ShellSort; qfF/X"#0  
')]K&  
/** NCm>iEeY  
* @author treeroot xw2dEvjgp%  
* @since 2006-2-2 jhs('n,  
* @version 1.0 XN+~g.0  
*/ "VEA71  
public class SortUtil { d4'*K1m   
public final static int INSERT = 1; Gwl]sMJ  
public final static int BUBBLE = 2; /F#_~9JXG  
public final static int SELECTION = 3; h>jLhj<07W  
public final static int SHELL = 4; R+}x#  
public final static int QUICK = 5; \^=Wp'5R  
public final static int IMPROVED_QUICK = 6; or2BG&W  
public final static int MERGE = 7; X~ca8!Dq  
public final static int IMPROVED_MERGE = 8; 6|# +  
public final static int HEAP = 9; VK/@jrL+  
SRL`!  
public static void sort(int[] data) { sfLH[Q?  
sort(data, IMPROVED_QUICK); 3awh>1N2 W  
} jkz .qo-%  
private static String[] name={ :)/%*<vq,  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~hYTs  
}; 8^/V2;~^,>  
mc{gcZIm  
private static Sort[] impl=new Sort[]{ >GRL5Iow  
new InsertSort(), O0|**Km\+  
new BubbleSort(), '3B\I#  
new SelectionSort(), cY&SKV#  
new ShellSort(), /{|<3CEe  
new QuickSort(), EvA{@g4>  
new ImprovedQuickSort(), \SA"DT  
new MergeSort(), G8Hj<3`  
new ImprovedMergeSort(), ] T `6Hz!  
new HeapSort() JPeZZ13sS  
}; TRB)cJZ?  
 p1zT]  
public static String toString(int algorithm){ aD5jy  
return name[algorithm-1]; B.:DW3  
} dy>iIc>  
RL0#WBR  
public static void sort(int[] data, int algorithm) { 014p= W  
impl[algorithm-1].sort(data); P<Wtv;Z1Z  
} g[Tl#X7F  
] qT\z<}  
public static interface Sort { N#C"@,}Y  
public void sort(int[] data); eVRFb#EU0e  
} `jl 1Q,~2r  
irqNnnMGEa  
public static void swap(int[] data, int i, int j) { cQ:Y@f 9  
int temp = data; d[h2Y/AR  
data = data[j]; 'A#`,^]uLF  
data[j] = temp; -c%K_2`  
} )9(Mt _  
} v=-8} S  
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