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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。 NrdbXPHceN  
插入排序: 0X3kVm <  
%<w)#eV?  
package org.rut.util.algorithm.support; ']ussFaQ  
Cuq=>J  
import org.rut.util.algorithm.SortUtil; ?F9:rUyN  
/** r9uuVxBD  
* @author treeroot ~vIQ-|8r:  
* @since 2006-2-2 (1(dL_?  
* @version 1.0 HW(cA}$  
*/ Q<V?rPAcx  
public class InsertSort implements SortUtil.Sort{ |,89zTk'  
P*6B+8h"5g  
/* (non-Javadoc) a$SGFA}V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 14p <0BG  
*/ fWywegh  
public void sort(int[] data) { Zi fAn  
int temp; T Prqb  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @<O Bt d  
} u<l[S  
} Wo@0yF@  
} q}#4bB9  
_fu?,  
} 2\M^ _x$N  
aoh"<I%]>4  
冒泡排序: ;|f|d?Q\  
^F `   
package org.rut.util.algorithm.support; pAo5c4y!4  
c} GH|i  
import org.rut.util.algorithm.SortUtil; gSP]& _9j  
J]A!>|Ic  
/** c3&;Y0SD  
* @author treeroot E}d@0C:  
* @since 2006-2-2 r9Wk7?w)  
* @version 1.0  cf#2Wg)  
*/ !A )2<<4  
public class BubbleSort implements SortUtil.Sort{ J?~El&  
i5sNCt  
/* (non-Javadoc) =r=YV-D.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <T[ wZ[l  
*/ I]|X6  
public void sort(int[] data) { FDA``H~  
int temp; 6;g"`l51  
for(int i=0;i for(int j=data.length-1;j>i;j--){ )V<ML7_?  
if(data[j] SortUtil.swap(data,j,j-1); |<l  sv  
} K"O+`2$  
} OsMU>v }m  
} gUs.D_*  
} 0?KY9  
ua%$r[  
} SM2QF  
bZ0mK$B  
选择排序: p^~ AbU'6~  
qcSlY&6+  
package org.rut.util.algorithm.support; "|yuP1;L  
0HA`  
import org.rut.util.algorithm.SortUtil; 3: 'eZ cM  
oz(V a!  
/** ab5 a>w6}  
* @author treeroot /*)zQ?N  
* @since 2006-2-2 A~_*vcz  
* @version 1.0 N,9W18 @  
*/ "NY[&S  
public class SelectionSort implements SortUtil.Sort { 5G"DgG*<  
u:Fa1 !4JR  
/* E)l0`83~^  
* (non-Javadoc) iYi3x_A`  
* 88]V6Rm9[*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nm)H\i  
*/ 8X,dVX5LT  
public void sort(int[] data) { 1&JPyW  
int temp; eM";P/XaX  
for (int i = 0; i < data.length; i++) { ToWiXH)4  
int lowIndex = i; @kCFc}  
for (int j = data.length - 1; j > i; j--) { x{ _:B DY  
if (data[j] < data[lowIndex]) { Ib(q9!L  
lowIndex = j; b*w@kLLN  
} ?6;9r[ p  
} +ML4.$lc^  
SortUtil.swap(data,i,lowIndex); }w{ 6Ua  
} [&e|:1  
} F<K;tt  
cI~uI '  
} z']TRjDbT  
4PtRTb0<i3  
Shell排序: 0x&-/qce6W  
5G!0Yy['  
package org.rut.util.algorithm.support; i^SuVca  
TYv'#{  
import org.rut.util.algorithm.SortUtil; OPVF)@"ptM  
k1l\Rywp  
/** =hZ#Z]f  
* @author treeroot TI^W=5W@@  
* @since 2006-2-2 } + ]A?'&  
* @version 1.0 HjCWsQM  
*/ PE $sF ]/  
public class ShellSort implements SortUtil.Sort{ i2]7Bf)oV  
5G$N  
/* (non-Javadoc) (X=JT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5f;6BP  
*/ 6 V{Sf9V|  
public void sort(int[] data) { 77KB-l2  
for(int i=data.length/2;i>2;i/=2){ Nm;yL  
for(int j=0;j insertSort(data,j,i); *3.K; Ic;  
} =lB +GS%  
} '3BBTr%aZ  
insertSort(data,0,1); )ry7a .39b  
} US5 ]@!  
#m x4pf{  
/** ='!E;  
* @param data 0&M~lJ  
* @param j uDhe )  
* @param i ENZjRf4  
*/ '%Cc!63t*  
private void insertSort(int[] data, int start, int inc) { :1>h,NKC>  
int temp; ~ _ ogeD  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2/XrorV  
} ''t\J^+&  
} bSa%?laS  
} _"_ 21uB  
%r E:5)  
} PHQ7  
4eF qD;  
快速排序: LxdF;JCz:  
Y~E 8z  
package org.rut.util.algorithm.support; `_YXU  
<{ZDD]UGs0  
import org.rut.util.algorithm.SortUtil; ltQo_k  
p.wed% O.  
/** bwrM%BL  
* @author treeroot #)}K,FDd  
* @since 2006-2-2 m*bTELb  
* @version 1.0 / thFs4  
*/ QZwUv<*  
public class QuickSort implements SortUtil.Sort{ rra|}l4Y  
t QR qQ  
/* (non-Javadoc) hn`yc7<}(u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %mqep5n(  
*/ '80mhrEutG  
public void sort(int[] data) { wh Hp}r  
quickSort(data,0,data.length-1);  }?eO.l{  
} p{@jM  
private void quickSort(int[] data,int i,int j){ ?04jkq&  
int pivotIndex=(i+j)/2; 5#275Hyv  
file://swap W;Y"J_  
SortUtil.swap(data,pivotIndex,j); rY?]pMp  
v2Ft=_*G|  
int k=partition(data,i-1,j,data[j]); k|hy_? *  
SortUtil.swap(data,k,j); ys/U.e|)!  
if((k-i)>1) quickSort(data,i,k-1); 6Qc *:(GE  
if((j-k)>1) quickSort(data,k+1,j); Vs1H)T%  
1k)31GEQw  
} .-Z=Aa>  
/** NqlU?  
* @param data _xWX/1DY  
* @param i Ez1-Nx  
* @param j ylGT9G19  
* @return 3VZ}5  
*/ 14~#k%zO(  
private int partition(int[] data, int l, int r,int pivot) { FhP$R}F  
do{ AU$<W"%R  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); tDC?St1  
SortUtil.swap(data,l,r); at|.Q*&a#  
} pyw]ydB  
while(l SortUtil.swap(data,l,r); (G6lr%d  
return l; X-4(oE  
} iv!;gMco  
+X%pUe  
} Yt!o Hn  
:Bh7mF-1  
改进后的快速排序: &gLXS1O  
9kzJ5}  
package org.rut.util.algorithm.support; /KTWBcs 7  
d[F3"b%  
import org.rut.util.algorithm.SortUtil; c)j60y   
BT^Im=A  
/** qdPmTaak  
* @author treeroot Nf5zQ@o_y  
* @since 2006-2-2 i}L*PCP  
* @version 1.0 Vg^yjP{sv  
*/ A3Xfu$[u  
public class ImprovedQuickSort implements SortUtil.Sort { <B Vx%  
l5 T0x=y9!  
private static int MAX_STACK_SIZE=4096; n-he|u  
private static int THRESHOLD=10; t5aX9WIW  
/* (non-Javadoc) BCmKzv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NwcRH9};i  
*/ {i<L<Y(3  
public void sort(int[] data) { |4C5;"Pc  
int[] stack=new int[MAX_STACK_SIZE]; K3*-lO:A9  
h.pVIO`  
int top=-1; "8$Muwm  
int pivot; jX7;hQ+P  
int pivotIndex,l,r; ^/ff)'.J  
:@b=;  
stack[++top]=0; t`- [  
stack[++top]=data.length-1; 'WNq/z"X  
tjLG$M1z`  
while(top>0){ v8"Zru  
int j=stack[top--]; z8dBfA<z  
int i=stack[top--]; 'F%h]4|1  
/g>]J70  
pivotIndex=(i+j)/2; X Z=%XB:?  
pivot=data[pivotIndex]; M?00n< vM  
=B{B ?B"r  
SortUtil.swap(data,pivotIndex,j); =TGa\iclpB  
);/p[Fd2]  
file://partition `l'Ine 11  
l=i-1; *x/H   
r=j; b:PzqMh{G  
do{ B un^EJ)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); e>UU/Ks  
SortUtil.swap(data,l,r); mwMcAUD]2  
} ,`ba?O?*G  
while(l SortUtil.swap(data,l,r); yR% l[/ X  
SortUtil.swap(data,l,j); 6T5\zInd  
)GfL?'Z  
if((l-i)>THRESHOLD){ sB*!Nf^y  
stack[++top]=i; `i vE: 3k  
stack[++top]=l-1; 1j]vJ4R_\  
} rMoz+{1A  
if((j-l)>THRESHOLD){ uovSe4q5q  
stack[++top]=l+1; *m8{yh  
stack[++top]=j; $WiU oS  
} SN 4JX  
-C2[ZP-  
} sk5B} -  
file://new InsertSort().sort(data); zWrynJ}s  
insertSort(data); Mn 8| K nh  
} 9JqT"zj  
/** u f1s}/M  
* @param data x9o(q`N  
*/ t~|`RMn"  
private void insertSort(int[] data) { ?@^gpVK{  
int temp; "H9q%S,FH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6"9(ce KX  
} K}DrJ/s  
} ,:{+-v(  
} mLV0J '  
_4 YT2k  
} Qoa&]]  
/&E]qc*-p  
归并排序: Uuktq)NU  
I%jlM0ZUI"  
package org.rut.util.algorithm.support; pQ xv_4  
sD9OV6^{?K  
import org.rut.util.algorithm.SortUtil; g^{a;=  
)m I i.  
/** ,va2:V  
* @author treeroot 6n\){dkZ~  
* @since 2006-2-2 5~OKKSUmT  
* @version 1.0 d/b\:[B@  
*/ `NQ;|!  
public class MergeSort implements SortUtil.Sort{ y~z&8XrH  
mMT\"bb'  
/* (non-Javadoc) .dn#TtQv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) or"9I1o  
*/ u p]>UX8  
public void sort(int[] data) { g)}q3-<AK>  
int[] temp=new int[data.length]; hGI5^!Cq  
mergeSort(data,temp,0,data.length-1); k_nQmU>  
} \'&,9lP  
R*H-QH/H1  
private void mergeSort(int[] data,int[] temp,int l,int r){ bduHYs+rq  
int mid=(l+r)/2; hb(H-`16  
if(l==r) return ; ex.^V sf_  
mergeSort(data,temp,l,mid); K."W/A!  
mergeSort(data,temp,mid+1,r); |9[)-C~N7  
for(int i=l;i<=r;i++){ /2cn`dR,  
temp=data; wauM|/KG  
} D|2lBU  
int i1=l; "$3~):o  
int i2=mid+1; B}@CtVWFz  
for(int cur=l;cur<=r;cur++){ Lie= DD  
if(i1==mid+1) x=N0H  
data[cur]=temp[i2++]; TpYdIt9#>  
else if(i2>r) T#KVN{O  
data[cur]=temp[i1++]; 59(kk;  
else if(temp[i1] data[cur]=temp[i1++]; QS@eqN  
else 4 g8t  
data[cur]=temp[i2++]; 8\+XtS  
} <.ZD.u  
} \SBAk h  
vvLzUxV  
}  `ghNS  
\Hu?K\SWs  
改进后的归并排序: bV:MOj^  
}vZTiuzC  
package org.rut.util.algorithm.support; KDr)'gl&  
16"L;r  
import org.rut.util.algorithm.SortUtil; k;<F33v;Mh  
xv7nChB  
/** XvZ5Q  
* @author treeroot wsj5;(f+  
* @since 2006-2-2 )o;n2T#O  
* @version 1.0 F<O<=Ww  
*/ =%{E^z>1  
public class ImprovedMergeSort implements SortUtil.Sort { LAGg(:3f3  
b~?3HY:t~K  
private static final int THRESHOLD = 10; w ; PV &M  
A QPzId*z  
/* 6Z-[-0o+g  
* (non-Javadoc) ~2UmX'  
* }7i}dyQv}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k~]\kv=  
*/ w69G6G(  
public void sort(int[] data) { [bEm D  
int[] temp=new int[data.length]; 0C717  
mergeSort(data,temp,0,data.length-1); n*hRlL  
} MNX-D0`g  
( `d_DQ  
private void mergeSort(int[] data, int[] temp, int l, int r) { ah!fQLMH  
int i, j, k; qX]ej 2  
int mid = (l + r) / 2; _<jccQ  
if (l == r) Mvk#$:8e  
return; *jl_,0g]  
if ((mid - l) >= THRESHOLD) !^3j9<|@'  
mergeSort(data, temp, l, mid); Y|<1|wGG  
else /?C6 oj1  
insertSort(data, l, mid - l + 1); ~{D:vj4>  
if ((r - mid) > THRESHOLD) h)T-7b  
mergeSort(data, temp, mid + 1, r); F5<GGEQb  
else _p| KaT``  
insertSort(data, mid + 1, r - mid); gWy2E;"a  
[jF\"#A  
for (i = l; i <= mid; i++) { $I a-go2W  
temp = data; ^Y^5 @ x=  
} NmV][0(BS  
for (j = 1; j <= r - mid; j++) { 9|hPl-. .W  
temp[r - j + 1] = data[j + mid]; ]2xoeNF/W{  
} {N0ky=u d  
int a = temp[l]; cWa> rUsF  
int b = temp[r]; gC/-7/}  
for (i = l, j = r, k = l; k <= r; k++) { =e]Wt/AQ  
if (a < b) { ]K%D$x{+\  
data[k] = temp[i++]; Ay\!ohIS3  
a = temp; Mp^U)S+  
} else { "Oy&6rrr  
data[k] = temp[j--]; l5_%Q+E_  
b = temp[j]; ]GPUL>7  
} Q$2^m(?;  
} |)Sx"B)  
} tA9(N>[ *  
+,}CuF  
/** >V3pYRA   
* @param data 4Jj O.H  
* @param l i{ 2rQy+  
* @param i ++0xa%:  
*/ l7GLN1#m  
private void insertSort(int[] data, int start, int len) { ^i~'aq  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (9D,Ukw  
} 3yIC@>&y(8  
} cWL 7gv\|  
} {%z}CTf#  
} hH@pA:`s  
bq` 0$c%hN  
堆排序: h>K%Ox R  
.e2 K\o  
package org.rut.util.algorithm.support; Jx= v6==7  
h2edA#bub  
import org.rut.util.algorithm.SortUtil; o8S)8_3  
UjQi9ELoJ  
/** f5QJj<@  
* @author treeroot # FV`*G  
* @since 2006-2-2 ,h$j%->U  
* @version 1.0 3mM.#2=@>  
*/ atWAhN  
public class HeapSort implements SortUtil.Sort{ XWFuAE  
w~=@+U$f  
/* (non-Javadoc) t2vo;,^euL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ic&Jhw;]z  
*/ #-u?+Nk/  
public void sort(int[] data) { S#, E)h/  
MaxHeap h=new MaxHeap(); f<G:}I  
h.init(data); )haHI)xR  
for(int i=0;i h.remove(); ~0@+8%^>;  
System.arraycopy(h.queue,1,data,0,data.length); T1r^.;I:  
} Fh$Xcz~i  
^!>o5Y)  
private static class MaxHeap{ @uI_4a  
})}-K7v1+  
void init(int[] data){ WD5ulm?91|  
this.queue=new int[data.length+1]; TJp0^&Q  
for(int i=0;i queue[++size]=data; !U !}*clYL  
fixUp(size); *S4*FH;8  
} {pNf& '  
} 9}6^5f?|  
2*1s(Jro  
private int size=0; ~2*8pb 4  
gT6@0ANq  
private int[] queue; .EUOKPK4W  
YG6Kvc6T  
public int get() { 0UT2sM$  
return queue[1]; y:8*!}fR  
} .J3Dk=/  
a<K@rgQ  
public void remove() { f<0nj?  
SortUtil.swap(queue,1,size--); ~8G<Nw4*\  
fixDown(1); 7|Tu@0XXA  
} o$DJL11E  
file://fixdown oLp:Z=  
private void fixDown(int k) { _*Z2</5  
int j; jVpk) ;vC  
while ((j = k << 1) <= size) { !]k$a  
if (j < size %26amp;%26amp; queue[j] j++; 3_tO  
if (queue[k]>queue[j]) file://不用交换 Kr]`.@/.S  
break; 0BTLIV$d;  
SortUtil.swap(queue,j,k); 5:H9B  
k = j; *xOrt)D=  
} GlVD!0  
} T9+ ?A l  
private void fixUp(int k) { [UHDN:y  
while (k > 1) { xFY;aK  
int j = k >> 1; =NzA2td  
if (queue[j]>queue[k]) m ,U`hPJ  
break; @"#W\m8  
SortUtil.swap(queue,j,k); 6"W~%FSJX  
k = j; 43Yav+G(+  
} <j.bG 7  
} oA&V,r  
6Hn3  
} !%?X% @9  
Oj*3'?<7=  
} &` u<KKF6  
ToN$x^M w  
SortUtil: dZ7+Iw;m  
pU*dE   
package org.rut.util.algorithm; [EJ[Gg0m  
Kj_hCSvf3e  
import org.rut.util.algorithm.support.BubbleSort; _azg 0.)  
import org.rut.util.algorithm.support.HeapSort; /0mbG!Ac  
import org.rut.util.algorithm.support.ImprovedMergeSort; +BRmqJ3  
import org.rut.util.algorithm.support.ImprovedQuickSort; HX{O@  
import org.rut.util.algorithm.support.InsertSort; >]k'3|vV  
import org.rut.util.algorithm.support.MergeSort; YGObTIGJvf  
import org.rut.util.algorithm.support.QuickSort; oP".>g-.  
import org.rut.util.algorithm.support.SelectionSort; [2!K 6  
import org.rut.util.algorithm.support.ShellSort; 2 c <Qh=  
%jY /jp=R  
/** v 6?{g  
* @author treeroot !z;a>[T'  
* @since 2006-2-2 gC#PqK~  
* @version 1.0 xh\{ dUPA  
*/ Y$ ;C@I  
public class SortUtil { ']+-u{+#  
public final static int INSERT = 1; h&Ehp   
public final static int BUBBLE = 2; Q- %Q7n'c  
public final static int SELECTION = 3; ^Q]*CU+C  
public final static int SHELL = 4; s45Y8!c  
public final static int QUICK = 5; Yo c N@s  
public final static int IMPROVED_QUICK = 6; (@dh"=Lt\  
public final static int MERGE = 7; Qcz7IA  
public final static int IMPROVED_MERGE = 8; Poacd;*  
public final static int HEAP = 9; rs3Uk.Z^ '  
Dm6}$v'0  
public static void sort(int[] data) { tqE LF  
sort(data, IMPROVED_QUICK); Dqe/n_Z  
} W$0<a@  
private static String[] name={ fi%u]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6v0^'}  
}; OZ1+`4 v  
O edL?4  
private static Sort[] impl=new Sort[]{ tH<v1LEZN  
new InsertSort(), ZgLO[Bj  
new BubbleSort(), dvk? A$  
new SelectionSort(), tqIz$84G  
new ShellSort(), s&p*.I]@>  
new QuickSort(), 0}c *u) ,  
new ImprovedQuickSort(), l/_3H\iM  
new MergeSort(), Xz0jjO,  
new ImprovedMergeSort(), 0CxQ@~ttl  
new HeapSort() A?3hNvfx  
}; lkV% k1w  
y5.Z<Y  
public static String toString(int algorithm){ G|yX9C]R   
return name[algorithm-1]; Mu18s}  
} 3mgFouX2x,  
"';'*x  
public static void sort(int[] data, int algorithm) { zqqpBwk#  
impl[algorithm-1].sort(data); j[yGfDb  
} A8hj"V47  
sf]y\_zU  
public static interface Sort { #"6(Q2| l  
public void sort(int[] data); EW1 L!3K  
} s@f4f__(]  
l0g#&V--  
public static void swap(int[] data, int i, int j) { rB|D^@mG  
int temp = data; 7Rj!vj/  
data = data[j]; ,*r"cmz  
data[j] = temp; tq?lF$mM:  
} |^Z1 D TAw  
} L*9^-,  
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