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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。 `@VM<av  
插入排序: .( TQ5/ ~  
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package org.rut.util.algorithm.support;  =F",D=  
{[YqGv=fF  
import org.rut.util.algorithm.SortUtil; R=#q"9qz  
/** -6hu31W  
* @author treeroot z 'vdC  
* @since 2006-2-2 Tx|SAa=V  
* @version 1.0 v^ y}lT  
*/ ,(;p(#F>  
public class InsertSort implements SortUtil.Sort{ + cV5h  
sw3:HNG=  
/* (non-Javadoc) j]@ x Q,y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) INN/VDsJ  
*/ SdjUhR+o  
public void sort(int[] data) { Z`SWZ<  
int temp; t1.zWe+C>3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !q7;{/QM6  
} w~cq% %  
} w /Bn2bD  
} P%<aGb4  
m<X#W W)N  
} \Y>#^b?  
)V9Mcr*Ce6  
冒泡排序: L V[66<T  
4U LJtM3  
package org.rut.util.algorithm.support; ?9wFV/  
! 4qps$p{  
import org.rut.util.algorithm.SortUtil; fY)4]=L  
$ DABR  
/** q:EzKrE  
* @author treeroot =:CGl   
* @since 2006-2-2 v;N1'  
* @version 1.0 @&i#S}%/  
*/ +7U  A%q  
public class BubbleSort implements SortUtil.Sort{ 'NG^HLD/  
% +t  
/* (non-Javadoc) m<,y-bQ*(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z1{E:~f  
*/ a6 #{2q  
public void sort(int[] data) { p ?Ij-uo"o  
int temp; WcZo+r  
for(int i=0;i for(int j=data.length-1;j>i;j--){ *tbpFk4/  
if(data[j] SortUtil.swap(data,j,j-1); A/Fs?m{7U  
} yPzULO4  
} I9Edw]  
} FJn~ =hA  
} `ohF?5J,  
do?S,'(g  
} (:j+[3Ht  
+_-)0[+p  
选择排序: u$Pf.#  
f<s'prF  
package org.rut.util.algorithm.support; iaaH9X %  
UL@5*uiX  
import org.rut.util.algorithm.SortUtil; L_.xr ?  
Vx\# +)4  
/** C,VqT6E<  
* @author treeroot O_ s9  
* @since 2006-2-2 b Q9"GO<X  
* @version 1.0 6/V{>MTZg  
*/ &Gy'AUz-  
public class SelectionSort implements SortUtil.Sort { vBCZ/F[  
r=P$iG'&  
/* NBbY## w0  
* (non-Javadoc) *+,Lc1|\  
* SCI-jf3WN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &ls!IN  
*/ yaYIgG  
public void sort(int[] data) { J7 *G/F  
int temp; UtGd/\:  
for (int i = 0; i < data.length; i++) { x#}j3" PP  
int lowIndex = i;  2U+z~  
for (int j = data.length - 1; j > i; j--) { :+gCO!9Y  
if (data[j] < data[lowIndex]) { q*<J $PI  
lowIndex = j; MSYLkQ}_b  
} eqUn8<<s  
} Z>MJ0J76]  
SortUtil.swap(data,i,lowIndex); $V{- @=  
} e G*s1uQl  
} EDa08+Y  
U7f&N  
} NkjQyMF  
No92Y^~/  
Shell排序: .>gU 9A(Nk  
hF=V ?\  
package org.rut.util.algorithm.support; (J,Oh  
h.s<0.  
import org.rut.util.algorithm.SortUtil; 9B6_eFb  
^v'g~+@o  
/** aD2CDu  
* @author treeroot 8 *(W |J  
* @since 2006-2-2 R2H\;N  
* @version 1.0 wHN` - 5%  
*/ onJ[&f  
public class ShellSort implements SortUtil.Sort{ M'!!EQo  
hc p'+:  
/* (non-Javadoc) sVm'9k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u):Rw  
*/ 1rm$@L  
public void sort(int[] data) { omUl2C  
for(int i=data.length/2;i>2;i/=2){ ;ZqD60%\  
for(int j=0;j insertSort(data,j,i); CsST-qxg  
} ][$$  =  
} yn ?U7`V  
insertSort(data,0,1); ywsz"/=@  
} BUy}Rn  
hoD[wAC  
/** 5-QvQ&eH.  
* @param data raI~BIfe  
* @param j uwS'*5tU  
* @param i FUTyx"   
*/ hwol7B>   
private void insertSort(int[] data, int start, int inc) { ?[>BssW  
int temp; :#!F 7u  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); kp &XX|  
} ;Wrd=)Ka  
} s)&R W#:X  
} =ILo`Q~  
<812V8<!  
} T?}=k{C]  
=L; n8~{@y  
快速排序: A`8}J4  
~zOU/8n ,F  
package org.rut.util.algorithm.support; o'}Z!@h  
qI%9MI;BV  
import org.rut.util.algorithm.SortUtil; QX~72X=(  
Hd@T8 D*A  
/** <wGT s6  
* @author treeroot []fj~hj  
* @since 2006-2-2 f.xSr!  
* @version 1.0 r@V(w`  
*/  D]>86&  
public class QuickSort implements SortUtil.Sort{ T6?d`i i1  
6V_5BpXt  
/* (non-Javadoc) Pc:'>,3!V3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !\|@{UJk/  
*/ FU v)<rK  
public void sort(int[] data) { $YO]IK$  
quickSort(data,0,data.length-1); 6I.+c  
} '~6CGqU*  
private void quickSort(int[] data,int i,int j){ 0PX@E-n  
int pivotIndex=(i+j)/2; 1ZH8/1gWI  
file://swap x:wq"X  
SortUtil.swap(data,pivotIndex,j); 1XKIK(l  
Z.Y8z#[xg  
int k=partition(data,i-1,j,data[j]); $HnD|_*  
SortUtil.swap(data,k,j); lV*&^Q8.  
if((k-i)>1) quickSort(data,i,k-1); _f2iz4  
if((j-k)>1) quickSort(data,k+1,j); 1~iBzPU2  
/SM#hwFxJ&  
} &7y1KwfXn  
/** WRyv >Y  
* @param data 7&U+f:-w  
* @param i E ^>7jf09,  
* @param j L$07u{Q  
* @return 9!OCilG  
*/ .;sPG  
private int partition(int[] data, int l, int r,int pivot) { k/rkJ|i+p  
do{ {}gk4 xr  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); pDS4_u  
SortUtil.swap(data,l,r); fHp#Gi3Lz  
} \Hx#p`B%  
while(l SortUtil.swap(data,l,r);  k`zK  
return l; ON=ley  
} y&|{x "  
5UD;Z V%  
}  [ ^ \)  
leqSS}KU+  
改进后的快速排序: CMf~Yv  
"+"dALX{3K  
package org.rut.util.algorithm.support; H_$f v_  
7.'j~hJL  
import org.rut.util.algorithm.SortUtil; +[nYu)puP  
e/I{N0SR  
/** 8pKPbi;(2  
* @author treeroot !LSWg:Ev+  
* @since 2006-2-2 #z5?Y2t7~^  
* @version 1.0 $f-pLF+x  
*/ N9hWx()v  
public class ImprovedQuickSort implements SortUtil.Sort { sSb&r  
g}`CdVQ2M<  
private static int MAX_STACK_SIZE=4096; R1%T>2"~&  
private static int THRESHOLD=10; !f[N&se  
/* (non-Javadoc) 3JO:n6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B ~bU7.Cd  
*/ 3gXUfv2ID  
public void sort(int[] data) { #3jZ7RqzQ  
int[] stack=new int[MAX_STACK_SIZE]; A)0m~+?{J  
'n`$c{N<tM  
int top=-1; , Vr6  
int pivot; w0OK. fj  
int pivotIndex,l,r; lcLxqnv  
m/c~2?-;  
stack[++top]=0; T>?1+mruM  
stack[++top]=data.length-1; 5%$kAJZC-  
<t2?Oii;  
while(top>0){ D#(Pg  
int j=stack[top--]; }=R|iz*,!  
int i=stack[top--]; M4]|(A  
1Ee>pbd  
pivotIndex=(i+j)/2; C8SNSeg  
pivot=data[pivotIndex]; dNmX<WXG  
n m$G4Q  
SortUtil.swap(data,pivotIndex,j); 6/C  
Yhdt8[ 2  
file://partition :njUaMFoMA  
l=i-1; %[;KO&Ga  
r=j; T3 /LUm  
do{ G4]``  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?["ZEa  
SortUtil.swap(data,l,r); Tdp$laPO'  
} Q 7?4GxMj  
while(l SortUtil.swap(data,l,r); 0;`PHNBq  
SortUtil.swap(data,l,j); W# /Ol59  
+1A<kJ  
if((l-i)>THRESHOLD){ .h } D%Qa  
stack[++top]=i; ZuON@(  
stack[++top]=l-1; XBBRB<l)  
} TMs\#  
if((j-l)>THRESHOLD){ [r~l O@  
stack[++top]=l+1; 4iPg_+  
stack[++top]=j; UY^f|f&  
} CF4y$aC#  
7m$/.\5  
} MYm6C;o$  
file://new InsertSort().sort(data); jP]'gQ!-w  
insertSort(data); 8BdeqgU/_  
} kF7Al]IgT  
/** 27gm_ *  
* @param data B)iJH  
*/ -4a&R=%p  
private void insertSort(int[] data) { YRXe j  
int temp; l#:Q V:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r#}%sof  
} mcracj[ B  
} Q?q m~wD  
} m]vr|:{6/  
Sy~Mh]{E  
} %?y`_~G  
{hR23eE)#  
归并排序: \/G Y0s  
ld6@&34  
package org.rut.util.algorithm.support; W6>uLMUa  
l\GNd6)H  
import org.rut.util.algorithm.SortUtil; l{yPO@ut`F  
[J#(k`@  
/** p*,mwKN:  
* @author treeroot W>49,A,q  
* @since 2006-2-2 XsCbA8Qv  
* @version 1.0 :zoX Xo  
*/ 'LI)6;Yc  
public class MergeSort implements SortUtil.Sort{ DKH9 O  
w[_Uv4M  
/* (non-Javadoc) _69\#YvCG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i vk|-C'\  
*/ M>j)6?n`_  
public void sort(int[] data) { q fe#kF9  
int[] temp=new int[data.length]; vUA,`  
mergeSort(data,temp,0,data.length-1); /J:j'6  
} )$i3j 1[;  
D.} b<kDD  
private void mergeSort(int[] data,int[] temp,int l,int r){ : Dlk `?  
int mid=(l+r)/2; P&VI2k  
if(l==r) return ; i=UJ*c  
mergeSort(data,temp,l,mid); }mK_d9dx  
mergeSort(data,temp,mid+1,r); 4#uoPkLK  
for(int i=l;i<=r;i++){ o%iTYR :x  
temp=data; !{LwX Kf  
} PGDlSB^O  
int i1=l; R& A.F+Zgt  
int i2=mid+1; b/`' ?| C  
for(int cur=l;cur<=r;cur++){ j|9 2 g  
if(i1==mid+1) I1jF`xQ&0  
data[cur]=temp[i2++]; Q[^d{e*l  
else if(i2>r) bx> D  
data[cur]=temp[i1++]; vC1 `m  
else if(temp[i1] data[cur]=temp[i1++]; d+;~x*  
else ,`b9c=6;  
data[cur]=temp[i2++]; #c_ZU\" h"  
} ,\b5M`<c  
} .#}R$}e+  
)1ciO+_  
} ~Gza$ K  
*np|PyLP:  
改进后的归并排序: 'u~use"  
ty ?y&~axk  
package org.rut.util.algorithm.support; AmHIG_'  
Rz<fz"/2<  
import org.rut.util.algorithm.SortUtil; #Bjnz$KB  
Qpc>5p![3  
/** D]REZuHOI  
* @author treeroot MtljI6  
* @since 2006-2-2 5Z'pMkn3  
* @version 1.0 BN0))p  
*/ |{(ynZ]R  
public class ImprovedMergeSort implements SortUtil.Sort { b%6 _LK[  
(J;<&v}Gad  
private static final int THRESHOLD = 10; <Z Ls+|1  
qmGB~N|N  
/* 3$TpI5A  
* (non-Javadoc) L '=3y$"],  
* |ONOF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }N NyUwFa  
*/ tQ"PCm  
public void sort(int[] data) { Sk xaSJ"  
int[] temp=new int[data.length]; #+$z`C`  
mergeSort(data,temp,0,data.length-1); W-MQMHQ  
} !Iqyt. .  
(Y%}N(Jg  
private void mergeSort(int[] data, int[] temp, int l, int r) { EW)]75o{QF  
int i, j, k; LdcP0G\"VG  
int mid = (l + r) / 2; ,fbO}  
if (l == r) xYbF76B  
return; r BaK$Ut  
if ((mid - l) >= THRESHOLD) 6k-]2,\#  
mergeSort(data, temp, l, mid); n:{yri+  
else gg=z.`}  
insertSort(data, l, mid - l + 1); 98l#+4 +  
if ((r - mid) > THRESHOLD) '` n\YO.N  
mergeSort(data, temp, mid + 1, r); ufmFeeg  
else lxbZM9A2  
insertSort(data, mid + 1, r - mid); zPn8>J<.0Q  
zT@vji%Y  
for (i = l; i <= mid; i++) { &Ef'5  
temp = data; \|kU{d0  
} ry:tL0;;e#  
for (j = 1; j <= r - mid; j++) { 2ma.zI@^u9  
temp[r - j + 1] = data[j + mid]; /dIiFr"e}G  
} "qF8'58  
int a = temp[l]; `#~@f!';  
int b = temp[r]; 7J)-WXk  
for (i = l, j = r, k = l; k <= r; k++) { /}V9*mD2  
if (a < b) { C]}0h!_V  
data[k] = temp[i++]; ]0o78(/w2  
a = temp; OF)X(bi4j  
} else { fYpy5vc-dm  
data[k] = temp[j--]; q^gd1K<N  
b = temp[j]; jd#{66:  
} @E1N9S?>  
} ,MdCeA%`  
} 9.<$&mVk7`  
]C_6I\Z#=W  
/** k5^'b#v  
* @param data w1.~N`g$  
* @param l rz4S"4  
* @param i :E.mU{  
*/ *fl1 =Rfr  
private void insertSort(int[] data, int start, int len) { !JJY ( o  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "p<f#s}  
} r]TeR$NJ  
} = fm/l-P@  
} Mv_4*xVc  
} 0&<{o!>k  
O\x Uv  
堆排序: 3?C$Tl2G8  
>LLFe~9`g  
package org.rut.util.algorithm.support; qRNGe8  
<w[)T`4N  
import org.rut.util.algorithm.SortUtil; "w N DjWv  
!r$/-8b  
/** oo`mVRVf  
* @author treeroot R5Ti|k.~Y"  
* @since 2006-2-2 KY@k4S+  
* @version 1.0 o4d>c{p  
*/ )x]/b=m  
public class HeapSort implements SortUtil.Sort{ /Z-|E  
'M&`l%dIPf  
/* (non-Javadoc) ?=aQG0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g=b 'T-  
*/ W;2y.2*  
public void sort(int[] data) { (ue;O~  
MaxHeap h=new MaxHeap(); (xMAo;s_  
h.init(data); 'Kl} y,  
for(int i=0;i h.remove(); 7z`)1^ M  
System.arraycopy(h.queue,1,data,0,data.length); a93Aj  
} (g5T2(_6L  
6ZX{K1_q  
private static class MaxHeap{ d^4!=^HN  
8g$pfHt|e  
void init(int[] data){ :0r@o:H  
this.queue=new int[data.length+1]; gmt`_Dpm$  
for(int i=0;i queue[++size]=data; Tk)y*y  
fixUp(size); pX"f "  
} .^uNzN~  
} k: D<Q  
po!0j+r3  
private int size=0; L\!Pa+Iod  
OF!(BJ L  
private int[] queue; }{HlY?S  
e_7a9:2e  
public int get() { Ymx/N+Jl  
return queue[1]; G$WMW@fy  
} VP5_Y1e7  
(;\JCeGA  
public void remove() { !Vy/-N  
SortUtil.swap(queue,1,size--); 7N 7W0Ky  
fixDown(1); L -<!,CASW  
} ZxY%x/K  
file://fixdown Ee^2stc-  
private void fixDown(int k) { XXvM*"3D5  
int j; 1ih|b8)Dn  
while ((j = k << 1) <= size) { 7iT#dpF/A  
if (j < size %26amp;%26amp; queue[j] j++; ]v$VZ '  
if (queue[k]>queue[j]) file://不用交换 eWE7>kwh  
break; 624l5}@:  
SortUtil.swap(queue,j,k); ELPzqBI  
k = j; 5!-'~W  
} w_PnEJa9  
} ^_n(>$ EK  
private void fixUp(int k) { B/AS|i] sM  
while (k > 1) { >,7 -cm=.  
int j = k >> 1; ,x&T8o/a  
if (queue[j]>queue[k]) #,lJ>mTe4  
break; [s"xOP9R  
SortUtil.swap(queue,j,k); ;5M I8  
k = j; i1}Y;mj  
} 274F+X  
} ?31#:Mg6g+  
7 wH9w  
} /c6:B5G  
^|gD;OED7O  
} Sjv_% C $  
M*$#j|  
SortUtil: \$$DM"+:;H  
) 7w%\i{M  
package org.rut.util.algorithm; !o1+#DL)MU  
rUmaKh?v|X  
import org.rut.util.algorithm.support.BubbleSort; !E#FzY!}Pl  
import org.rut.util.algorithm.support.HeapSort; [2ez"4e  
import org.rut.util.algorithm.support.ImprovedMergeSort; Ia %> c  
import org.rut.util.algorithm.support.ImprovedQuickSort; "w7wd5h  
import org.rut.util.algorithm.support.InsertSort; C/_Z9LL?F  
import org.rut.util.algorithm.support.MergeSort; ?)X 0l  
import org.rut.util.algorithm.support.QuickSort; Lk#8G>U  
import org.rut.util.algorithm.support.SelectionSort; "V'<dn  
import org.rut.util.algorithm.support.ShellSort; B OKY X  
*: }9(8d  
/** K !g!tA$  
* @author treeroot $MhfGMk!'  
* @since 2006-2-2 Z4KYVHD,  
* @version 1.0 n%X5TJE  
*/ G LU7?2`t  
public class SortUtil { ';'gKX!9V  
public final static int INSERT = 1; }6b" JoC  
public final static int BUBBLE = 2; j2^Vz{  
public final static int SELECTION = 3; N.(wR  
public final static int SHELL = 4; -Ph"#R&  
public final static int QUICK = 5; bS7%%8C  
public final static int IMPROVED_QUICK = 6; @? e+;Sx  
public final static int MERGE = 7; k}18 ~cWM  
public final static int IMPROVED_MERGE = 8; NAgm?d  
public final static int HEAP = 9; ecvQEK2L  
;iq H:wO  
public static void sort(int[] data) { {0?^$R8j  
sort(data, IMPROVED_QUICK); \3q Z0  
} a!guZUg6  
private static String[] name={ jJbS{1z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" D6N 32q@  
}; AO[/-Uij  
=/kwUjC?  
private static Sort[] impl=new Sort[]{ S3 Dmc\f  
new InsertSort(), h\-3Y U  
new BubbleSort(), 46 [k9T  
new SelectionSort(), JIL(\d  
new ShellSort(), q!f'?yFYK  
new QuickSort(), GBSuTu8  
new ImprovedQuickSort(), l\t g.O~  
new MergeSort(), yVfF *nG  
new ImprovedMergeSort(), vb.}SG>  
new HeapSort() }-/oL+j  
}; 0(qtn9;=2  
0fE?(0pBj  
public static String toString(int algorithm){ !KC4[;Y  
return name[algorithm-1]; ,B2p\  
} Q{= DLm`  
_D"V^4^yqu  
public static void sort(int[] data, int algorithm) { t XfXuHa  
impl[algorithm-1].sort(data); JIatRc?g  
} !(A<  
gk hmQd  
public static interface Sort { ,76Q*p  
public void sort(int[] data); ^i[bo3  
} ,4mb05w;d  
F rd>+   
public static void swap(int[] data, int i, int j) { tf IUH'Ez>  
int temp = data; /JjSx/  
data = data[j]; '+&!;Jj,  
data[j] = temp; xcE2hK/+  
} cB0"vbdO  
} -J":'xCP!  
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