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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。 8-?n<h%8E  
插入排序: vMRKs#&8  
4zf#zJw  
package org.rut.util.algorithm.support; M!X@-t#  
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import org.rut.util.algorithm.SortUtil; BM&'3K_y  
/** Q ;k_q3  
* @author treeroot =?*V3e3{  
* @since 2006-2-2 !uO|T'u0a  
* @version 1.0 e:7aVOm  
*/ N,[M8n,  
public class InsertSort implements SortUtil.Sort{ ?J6hiQvL  
qA30z%#z_  
/* (non-Javadoc) sL/Lw WH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yp*kMC,3  
*/ ?,%N?  
public void sort(int[] data) { HYg _{  
int temp; xD1wHp!+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y(A?ib~K  
} |g;XC^!%=o  
} n,HWVo>([  
} ~{NDtB)  
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} pwZ &2&|  
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冒泡排序: A1'IK.  
'M'LJ.,"/  
package org.rut.util.algorithm.support; wy -!1wd  
El+]}D"  
import org.rut.util.algorithm.SortUtil; 54^hBejQ  
,~4(td+R7  
/** dO8Z {wfs  
* @author treeroot 6 w ]]KA  
* @since 2006-2-2 /?6y2t  
* @version 1.0 #F{|G:\@[  
*/ u8,T>VNVw  
public class BubbleSort implements SortUtil.Sort{ 5j}@Of1pd  
3<`h/`ku  
/* (non-Javadoc) 7olA@;$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DHJnz>bE  
*/ 4PF4#  
public void sort(int[] data) { <s{/ka3  
int temp; #{ ?oUg>$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _|Dt6  
if(data[j] SortUtil.swap(data,j,j-1); !EW]: u  
} oNh .Zgg  
} R1m18GHQ  
} ,}|V'y  
} ?<}qx`+%Q  
.ZJh-cd  
} e| l?NXRX  
2'}2r ~6  
选择排序: =VSieh  
s3knh&'zb  
package org.rut.util.algorithm.support; i*; V4zh  
dJ;;l7":~  
import org.rut.util.algorithm.SortUtil; G?V3lQI1n  
gSv<.fD"  
/** $N ]P#g?Q  
* @author treeroot W ][IHy<   
* @since 2006-2-2 p,0 \NUC  
* @version 1.0 7yj2we  
*/ G^OSXf5  
public class SelectionSort implements SortUtil.Sort { =1JRu[&]8  
o. _^  
/* So 5{E 4[  
* (non-Javadoc) c ~C W-%wN  
* i'u;"ot=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a3)#tt=rA  
*/ j>:T)zhyY  
public void sort(int[] data) { @]7\.>)  
int temp; ynd}w G'  
for (int i = 0; i < data.length; i++) { oy'+n-  
int lowIndex = i; YS~x-5OE\  
for (int j = data.length - 1; j > i; j--) { }v!6BU6<Q  
if (data[j] < data[lowIndex]) { 0qZ)$ YKq  
lowIndex = j; g[n8N{s  
} Lr~K3nb  
} ;K_B,@:'  
SortUtil.swap(data,i,lowIndex); ditzl(L   
} x?F{=\z/o  
} p?h;Sv/  
INT2i8oU  
} zJy{Ry[Sb  
%)e+w+  
Shell排序: *~"`&rM(  
&ar}6eO  
package org.rut.util.algorithm.support; .`p_vS9  
oF^BJ8%Lm  
import org.rut.util.algorithm.SortUtil; g:)v thOs  
Ij8tBT?jlL  
/** e{O5y8,  
* @author treeroot :Ry 24X  
* @since 2006-2-2 %qHT!aP  
* @version 1.0 =V , _  
*/ [4t KJ+v  
public class ShellSort implements SortUtil.Sort{ ~_&.A*Jh  
R}VL UL$  
/* (non-Javadoc)  {MtB!x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `iI"rlc  
*/ nX S%>1o,  
public void sort(int[] data) { 525 >=h  
for(int i=data.length/2;i>2;i/=2){ pSP_cYa#(#  
for(int j=0;j insertSort(data,j,i); KWUz]>Z  
} 0_EF7`T  
} f#t^<`7  
insertSort(data,0,1); a8 1%M  
} rifxr4c[X>  
`lhLIQ'j  
/** #j JcgR<  
* @param data -T8 gV1*(<  
* @param j 1sJN^BvuG  
* @param i lN'/Z&62  
*/ ""d>f4,S  
private void insertSort(int[] data, int start, int inc) { a3 x~B=E  
int temp; e2fct|'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); B@=<'/S\7  
} AIyv;}5  
} Kd)m"9Cc  
} ss<'g@R  
[ lW "M  
} ni> ;8O]=  
NjxW A&[ng  
快速排序: m+UdT854  
Q(6(Scp{  
package org.rut.util.algorithm.support; D2p6&HNT  
u2< h<}Y  
import org.rut.util.algorithm.SortUtil; a:}"\>Aj  
)'~FDw\6  
/** a AM UJk  
* @author treeroot MDP MOA  
* @since 2006-2-2 OpLSjr  
* @version 1.0 N 3c*S"1  
*/ }hYE6~pr  
public class QuickSort implements SortUtil.Sort{ G,-OH-M!  
j%;)CV G"  
/* (non-Javadoc) F21[r!3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z L</  
*/ ([*t.  
public void sort(int[] data) { DcA'{21  
quickSort(data,0,data.length-1); !&lPdEc@T  
} B6\VxSX4{  
private void quickSort(int[] data,int i,int j){ (Y)h+}n5N  
int pivotIndex=(i+j)/2; ?m1$*j  
file://swap ]LTc)[5Zj  
SortUtil.swap(data,pivotIndex,j); <h=M Rw,l  
?<'W~Rm6n  
int k=partition(data,i-1,j,data[j]); % eRwH >  
SortUtil.swap(data,k,j); 29^bMau)v  
if((k-i)>1) quickSort(data,i,k-1); 3L?a4,Q"k}  
if((j-k)>1) quickSort(data,k+1,j); GuWBl$|+b  
fm>K4\2  
} ]F;]<_  
/** 2hJ3m+N^  
* @param data ,~xU>L^  
* @param i "}p?pF<'0  
* @param j --`LP[ll  
* @return #\BI-zt  
*/ o(/ ia3  
private int partition(int[] data, int l, int r,int pivot) { o$VH,2 QF  
do{ >;v0zE  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;|QR-m2/  
SortUtil.swap(data,l,r); acY[?L_6J  
} v:MS0]  
while(l SortUtil.swap(data,l,r); 2TEeP7  
return l; K)&XQ`&  
} 8$UZL  
vw] D{OBv*  
} tQ JH'YV  
[V, ;X  
改进后的快速排序: :s '"u]  
(B,t 1+%  
package org.rut.util.algorithm.support; *u'`XRJU/  
Wmxw!   
import org.rut.util.algorithm.SortUtil; $S8bp3)  
OIty ]c  
/** L"7` \4  
* @author treeroot h<ctW>6v  
* @since 2006-2-2 l0\>zWLZZ9  
* @version 1.0 I%>]!X  
*/ ?{,)XFck  
public class ImprovedQuickSort implements SortUtil.Sort { 14 'x-w^~k  
up3<=u{>  
private static int MAX_STACK_SIZE=4096; ysJhP .  
private static int THRESHOLD=10; OCO,-(  
/* (non-Javadoc) ' 5 qL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `AHNk7 t=  
*/ G>S1Ld'MV  
public void sort(int[] data) { _8pkejg  
int[] stack=new int[MAX_STACK_SIZE]; s*/ G- lY  
36WzFq#  
int top=-1; '3UIriY6  
int pivot; dzNaow*0&V  
int pivotIndex,l,r; PB<Sc>{U  
N|d.!Q;V.y  
stack[++top]=0; a 8hv.43  
stack[++top]=data.length-1; ; 9&.QR(  
|ezO@  
while(top>0){ +Y9D!=_lj  
int j=stack[top--]; 40d9/$uzh  
int i=stack[top--]; I u~aTgHX%  
Doc'7P  
pivotIndex=(i+j)/2; 'A(-MTd%  
pivot=data[pivotIndex]; \ Q8q9|g?]  
rn[}{1I33Q  
SortUtil.swap(data,pivotIndex,j); 1\J1yOL  
}:l%,DBw  
file://partition 5YG@[ic  
l=i-1; K<  
r=j; _B7?C:8Q-  
do{ YSz$` 7i  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?CW^*So  
SortUtil.swap(data,l,r); P}WhE  
} _E<O+leWf  
while(l SortUtil.swap(data,l,r); X1V}%@3:  
SortUtil.swap(data,l,j); MN M>  
b, **$  
if((l-i)>THRESHOLD){ CE7pg&dJ)i  
stack[++top]=i; e9hVX[uq  
stack[++top]=l-1; 6dR-HhF  
} m>-^ K  
if((j-l)>THRESHOLD){ u3i| }`  
stack[++top]=l+1; ah"MzU)  
stack[++top]=j; 9q)nNX<$)  
} L5qCv -{  
I;.! hV>E  
} ;/^]|  
file://new InsertSort().sort(data); - Zoo)  
insertSort(data); y7IbE   
} >;&V~q:di  
/** Y=Ar3O*F  
* @param data nh&J3b}B!  
*/ -k[tFBl w  
private void insertSort(int[] data) { e5>5/l]jsg  
int temp; v6DxxE2n  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )"c]FI[}  
} L1!hF3G  
} MV;Y?%>  
} GKsL~;8"  
G5nj,$F+  
} W/ZahPPq  
{Fp`l\,  
归并排序: )4F/T,{;m  
7~l  
package org.rut.util.algorithm.support; T.w}6? 2  
L3=YlX`UL  
import org.rut.util.algorithm.SortUtil; +?5Uy*$  
lF}$`6  
/** X?v ^>mA  
* @author treeroot WVT5VJ7*  
* @since 2006-2-2 sg6w7fp>  
* @version 1.0 D_19sN@0m  
*/ J.e8UQ@=5  
public class MergeSort implements SortUtil.Sort{ 9p\wTzA  
#SihedWi  
/* (non-Javadoc) ^~r&}l4c,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s?G'l=CcKu  
*/ .iP G/e  
public void sort(int[] data) { '^oGDlkr H  
int[] temp=new int[data.length]; & L.PU@  
mergeSort(data,temp,0,data.length-1); z5yb$-j  
} ++Ys9Y)*,  
\A3>c|  
private void mergeSort(int[] data,int[] temp,int l,int r){ S`2mtg  
int mid=(l+r)/2; \{M rQ2jd  
if(l==r) return ; 4Fr7jD,#k  
mergeSort(data,temp,l,mid); b!^M}s6  
mergeSort(data,temp,mid+1,r); .y;\puNq  
for(int i=l;i<=r;i++){ LE0J ;|1  
temp=data; JW%/^'  
} mS w?2ba  
int i1=l; J^g,jBk  
int i2=mid+1; lEyG9Xvi  
for(int cur=l;cur<=r;cur++){  ENYF0wW  
if(i1==mid+1) 7i+!^Qj?y  
data[cur]=temp[i2++]; _/N'I7g  
else if(i2>r) &Xn8oe  
data[cur]=temp[i1++]; ].k+Nzf_  
else if(temp[i1] data[cur]=temp[i1++]; ,>QMyI hv  
else lZS_n9Sc  
data[cur]=temp[i2++]; dxkRk#mf:  
} O7'<I|aD  
} /.| A  
20.-;jK  
} d Y:|Ef|v(  
U=&^H!LVY  
改进后的归并排序: ?2?S[\@`0U  
##EB; Y  
package org.rut.util.algorithm.support; 8z."X$  
QX/X {h6  
import org.rut.util.algorithm.SortUtil; tL={y*  
n2xLgK=  
/** kb"_6,[Ms  
* @author treeroot m?D <{BQ;  
* @since 2006-2-2 o[bE  
* @version 1.0 tT@w%Sz57N  
*/ nOAJ9  
public class ImprovedMergeSort implements SortUtil.Sort { Ge^zX$.'  
FG DGWcRw~  
private static final int THRESHOLD = 10; z.2r@Psk  
*PSvHXNi  
/* kCaO\#ta  
* (non-Javadoc) AfbB~LlBq  
* fB f 4]^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DU5:+" u3  
*/ v`#j  
public void sort(int[] data) { ^CZCZ,v  
int[] temp=new int[data.length]; <*s"e)XeqF  
mergeSort(data,temp,0,data.length-1); ||-nmOy  
} =jg#fdM -  
Y7<zm}=(/  
private void mergeSort(int[] data, int[] temp, int l, int r) { _BZ1Vnv  
int i, j, k; [[R7~.;  
int mid = (l + r) / 2; *4 <4  
if (l == r) H~A"C'P3#  
return; [[:UhrH-  
if ((mid - l) >= THRESHOLD) ?PBa'g  
mergeSort(data, temp, l, mid); YBb)/ZghY  
else  f~w>v  
insertSort(data, l, mid - l + 1); ,:D=gQ@`  
if ((r - mid) > THRESHOLD) J|V K P7  
mergeSort(data, temp, mid + 1, r); )v[XmJ>H~o  
else T vrk^!  
insertSort(data, mid + 1, r - mid); s|Z:}W?{  
"j{i,&Y$_  
for (i = l; i <= mid; i++) { ojHhT\M`  
temp = data; K&=D-50%  
} n[!;yO  
for (j = 1; j <= r - mid; j++) { o^3FL||P#r  
temp[r - j + 1] = data[j + mid]; <f N; xIB  
} Q,{^S,s<   
int a = temp[l]; 8wr8:( Y$  
int b = temp[r]; H&M1>JtE  
for (i = l, j = r, k = l; k <= r; k++) { tAF]2VV(e  
if (a < b) { B[r<m J  
data[k] = temp[i++]; ]eE 1n2  
a = temp; 93j{.0]X  
} else { -<_QF82  
data[k] = temp[j--]; AXs=1  e  
b = temp[j]; |6aJwe+*  
} U4BqO :sd  
} ]*qU+&  
} >OV<_(S4  
B`fH^N  
/** ~.J,A\F  
* @param data %SAw;ZtQ:  
* @param l F|>05>8  
* @param i ]4`t\YaT  
*/ C5|db{=\.*  
private void insertSort(int[] data, int start, int len) { \R(R9cry  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 69-:]7.g  
} [E7MsX  
} e+.\pe\  
} ,MQVE  
} j(iuz^I  
|~WYEh  
堆排序: 5Fm av5  
0"78/6XIs  
package org.rut.util.algorithm.support; t V03+&jF  
b O=yi)  
import org.rut.util.algorithm.SortUtil; w&Y{1rF>  
XM/vDdR  
/** iXFP5a>|  
* @author treeroot X8i(~ B  
* @since 2006-2-2 EF#QH _X  
* @version 1.0 ib$nc2BPb  
*/ KVkMU?6  
public class HeapSort implements SortUtil.Sort{ ?P/AC$:|I  
`S3>3  
/* (non-Javadoc) `pL^}_>|GM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~=En +J}*  
*/ /*$hx@ih  
public void sort(int[] data) { $bvJTuw  
MaxHeap h=new MaxHeap(); hIYTe  
h.init(data); S QY"OBo<e  
for(int i=0;i h.remove(); C3XmK}h  
System.arraycopy(h.queue,1,data,0,data.length); bc I']WgB-  
} ~6aCfbu%V  
\K iwUz  
private static class MaxHeap{ nwA8ALhE  
x;LzG t:w  
void init(int[] data){ J~#$J&iKh  
this.queue=new int[data.length+1]; 1u|V`J)0  
for(int i=0;i queue[++size]=data; V0*3;n  
fixUp(size); uH@FU60  
} 17|np2~  
} aG+j9Q_  
W_`A"WdT.  
private int size=0; ]Mi.f3QlO6  
\4d.sy0&>-  
private int[] queue; Dg HaOAdU  
 \ %=9  
public int get() { FLZWZ;  
return queue[1]; $((6=39s  
} N587(wZ  
#A7jyg":  
public void remove() { 5O/i3m26  
SortUtil.swap(queue,1,size--); 3+Qxg+<  
fixDown(1); D*PYr{z'  
} w|[RDaAb  
file://fixdown Pmg)v!"  
private void fixDown(int k) { ~EzaC?fQ  
int j; .|qK +Hnc  
while ((j = k << 1) <= size) { 8~lIe:F-  
if (j < size %26amp;%26amp; queue[j] j++; U69u'G:  
if (queue[k]>queue[j]) file://不用交换 Y-mK+1 2  
break; I<td1Y1q  
SortUtil.swap(queue,j,k);  +=q)  
k = j; *l+OlQI0+  
} -t2T(ha  
} *OJ/V O  
private void fixUp(int k) { Kv'n:z7Md  
while (k > 1) { l%ayI  
int j = k >> 1; )tHaB,  
if (queue[j]>queue[k]) ^N}Wnk7ks'  
break; =L|tp%!  
SortUtil.swap(queue,j,k); aNn"X y\ k  
k = j; E/&Rb*3  
} im} ?rY  
} `1*nL,i  
=*qD4qYA  
} ml0.$z  
GZS1zTwBL  
} w=]Ks'C]  
Aa0b6?Jm  
SortUtil: /+*#pDx/zW  
=deMd`=J  
package org.rut.util.algorithm; ;*ix~taL%  
`RU[8@ 2%  
import org.rut.util.algorithm.support.BubbleSort; ^;,M}|<h  
import org.rut.util.algorithm.support.HeapSort; taGU  
import org.rut.util.algorithm.support.ImprovedMergeSort; 6qN~/TnHZ  
import org.rut.util.algorithm.support.ImprovedQuickSort; 09A X-JP  
import org.rut.util.algorithm.support.InsertSort; >Vy>O &r  
import org.rut.util.algorithm.support.MergeSort; H>9CW<8  
import org.rut.util.algorithm.support.QuickSort; f/WQ[\<!I  
import org.rut.util.algorithm.support.SelectionSort; MuoF FvAA  
import org.rut.util.algorithm.support.ShellSort; 7Dnp'*H  
;.xoN|Per  
/** 1Je9,dd6  
* @author treeroot +3s%E{  
* @since 2006-2-2 8+]hpa,q  
* @version 1.0 m)V/L]4  
*/ D=:04V}2+  
public class SortUtil { ,+`61J3W  
public final static int INSERT = 1; #;n +YM">:  
public final static int BUBBLE = 2; M"%Q&o/I  
public final static int SELECTION = 3; ??TMSH  
public final static int SHELL = 4; yc|VJ2R*  
public final static int QUICK = 5; E_KCNn-f  
public final static int IMPROVED_QUICK = 6; b jAnaya  
public final static int MERGE = 7; pg]BsJN  
public final static int IMPROVED_MERGE = 8; 1n%?@+W  
public final static int HEAP = 9; 3@5=+z~CW  
aP'"G^F   
public static void sort(int[] data) { 8|E'>+ D_-  
sort(data, IMPROVED_QUICK); ih?^t(i  
} ?+T^O?r|O  
private static String[] name={ Kwc6mlw~M  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \om%Q[F7a  
}; {3N'D2N  
 L4uFNM]  
private static Sort[] impl=new Sort[]{ OL_{_K(w  
new InsertSort(), 8M@BG8  
new BubbleSort(), 0%!rx{f#\  
new SelectionSort(), uEc<}pV  
new ShellSort(), - 0?^#G}3}  
new QuickSort(), GUslPnG  
new ImprovedQuickSort(), cb5,P~/q  
new MergeSort(), 2Z20E$Cb  
new ImprovedMergeSort(), 42>Ge>#F  
new HeapSort() Qt]Q: 9I[  
}; {'16:dTJ  
'!f5?O+E  
public static String toString(int algorithm){ R |KD&!~Z  
return name[algorithm-1]; 9&RFO$WH  
} 29XL$v],  
A(]H{>PMy  
public static void sort(int[] data, int algorithm) { vkLC-Mzm<  
impl[algorithm-1].sort(data); ;[RZ0Uy=  
} nx0K$ Ptq  
+cU>k}  
public static interface Sort { qRbf2;  
public void sort(int[] data); h*u`X>!!  
} k+1|I)z  
?eV4 SH  
public static void swap(int[] data, int i, int j) { +a^F\8H  
int temp = data; 5BBD.!  
data = data[j]; /%lZu^  
data[j] = temp; fib}b? vk  
} :!zl^J;  
} &@ JvnO:  
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