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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。 h=hoV5d@  
插入排序: q;p.wEbr4U  
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package org.rut.util.algorithm.support; >/b^fAG  
]a)IMIh;  
import org.rut.util.algorithm.SortUtil; = Q@6c   
/** PM@XtL7J  
* @author treeroot j\! e9M  
* @since 2006-2-2 f](I.lm:  
* @version 1.0 !0b%Jh  
*/ ?4:rP@  
public class InsertSort implements SortUtil.Sort{ LxB&7  
E\w+kAAf  
/* (non-Javadoc) fzl=d_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3KtAK9PT  
*/ pNuqT*  
public void sort(int[] data) { 77``8,  
int temp; 6!Qknk$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YQ52~M0L  
} o1U}/y+R\  
} w .tW=z5  
} > 9o{(j  
j?( c}!}  
}  ?J<T  
:H{Bb{B%  
冒泡排序: i9KTX%s5^  
Ga.0Io&}C  
package org.rut.util.algorithm.support; {h,_"g\V  
[1<(VyJ}ye  
import org.rut.util.algorithm.SortUtil; 02,W~+d1  
&uPDZ#C-  
/** dnix:'D1  
* @author treeroot 6zuze0ud  
* @since 2006-2-2 k'x #t(  
* @version 1.0 (e(Rr 4  
*/ )R~a;?T_c0  
public class BubbleSort implements SortUtil.Sort{ 2@fa rx:  
+1x)z~q=  
/* (non-Javadoc) zFOL(s.h|0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Pw$48cg  
*/ XYts8}y5  
public void sort(int[] data) { "i&fp:E0  
int temp; |IAW{_9)U  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +Jdm #n?_  
if(data[j] SortUtil.swap(data,j,j-1); Gp,'kw"I  
} /0 _zXQyV  
} (oF-O{  
} oQ{cSThj  
} o'96ON0  
G&jZ\IV  
} a/34WFC  
5.dl>,  
选择排序: KhrFg1|  
*(icR  
package org.rut.util.algorithm.support;  b)Tl*  
>zFD $  
import org.rut.util.algorithm.SortUtil; B_cgWJ*4  
:Z[(A"dA  
/** ~U9q-/(J/  
* @author treeroot 4Ppop  
* @since 2006-2-2 &; s<dDQK  
* @version 1.0 SAy{YOLtl  
*/ s0 47"Q  
public class SelectionSort implements SortUtil.Sort { LaclC]yLU  
%uua_&#)  
/* lr0M<5d=p  
* (non-Javadoc) zXjw nep  
* AxEc^Cof  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rEmwKZF'  
*/ Si]X rub  
public void sort(int[] data) { <}cZi4l'  
int temp; $D}"k!H  
for (int i = 0; i < data.length; i++) { G~(& 3  
int lowIndex = i; aV#h5s  
for (int j = data.length - 1; j > i; j--) { _\UIc;3Gl  
if (data[j] < data[lowIndex]) { 2 ^oGwx @  
lowIndex = j; @C=m?7O98  
} L$kgK# T  
} oK$ '9c5<  
SortUtil.swap(data,i,lowIndex); *y?[ <2"$  
} $C$ub&D ~"  
} js -2"I  
[<Q4U{F  
} ?;_O 9  
>C*4_J7  
Shell排序: nSHNis  
lA]N04 d  
package org.rut.util.algorithm.support; _CL{IY  
a(f(R&-:$Y  
import org.rut.util.algorithm.SortUtil; ~XKZXGw  
EWO /u.z  
/** l/ QhD?)9  
* @author treeroot &y\igX1  
* @since 2006-2-2 (Igu:=  
* @version 1.0 #n#HzbT  
*/ >x*)GPDa  
public class ShellSort implements SortUtil.Sort{ FllX za)  
`6}Yqh))  
/* (non-Javadoc) 5#2jq<D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #Skj#)I"  
*/ p_r4^p\  
public void sort(int[] data) { [83>T ,  
for(int i=data.length/2;i>2;i/=2){ l|7O)  
for(int j=0;j insertSort(data,j,i); ;P8(Zf3wJb  
} ~2(]ZfO?>H  
} ] );NnsG  
insertSort(data,0,1); ^o bC4(  
} +!><5  
op.d;lO@  
/** ly=a>}F_  
* @param data H#`8Ey  
* @param j #N$9u"8C  
* @param i c ;^A)_/  
*/ C bQ4Y  
private void insertSort(int[] data, int start, int inc) { ) $J7sa  
int temp; W"t"X ~T3  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); iu|v9+  
} C5MqwNX  
} W "k| K:  
} &r:=KT3  
Sz)b7:  
} >: $"a  
x;(g  
快速排序: lC4PKm no  
bJ6p,]g  
package org.rut.util.algorithm.support; ol}`Wwy  
X.eB ;w/}  
import org.rut.util.algorithm.SortUtil; e5 3,Rqi)@  
TRy^hr8~  
/** Fpf><Rn  
* @author treeroot 6+e4<sy[E  
* @since 2006-2-2 {Zl4C;c  
* @version 1.0 h7*O.Opm=  
*/ zofx+g\(W  
public class QuickSort implements SortUtil.Sort{ UKj`_a6  
*uU4^E(  
/* (non-Javadoc) y;QQ| =,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B:nK)"{  
*/ M $uf:+F  
public void sort(int[] data) { A%n?}  
quickSort(data,0,data.length-1); I)lC{v  
} s??czM2O  
private void quickSort(int[] data,int i,int j){ yV2e5/i  
int pivotIndex=(i+j)/2; wASX\D }  
file://swap GFt1  
SortUtil.swap(data,pivotIndex,j); yquAr$L!  
\Z'/+}^h  
int k=partition(data,i-1,j,data[j]); shzG Eb  
SortUtil.swap(data,k,j); uJ 8x  
if((k-i)>1) quickSort(data,i,k-1); #j.FJFGX  
if((j-k)>1) quickSort(data,k+1,j); #R<G,"N5  
b5S7{"<V  
} mLaCkn  
/** EBwK 7c  
* @param data In+^V([u+_  
* @param i cm,4&x6  
* @param j &mdB\Y?^  
* @return s~Gw  
*/ URQ@=W7  
private int partition(int[] data, int l, int r,int pivot) { *(Ro;?O,pi  
do{ 7_%2xewV|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,5. <oDH  
SortUtil.swap(data,l,r); |*fNH(8&H  
} 7 Kjj?~RA  
while(l SortUtil.swap(data,l,r); %"+4 D,'l  
return l; yzg9I  
} y!hi"!  
LuL$v+`  
} q)k{W>O  
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改进后的快速排序: jzMg'z/@J  
`)2[ST  
package org.rut.util.algorithm.support; 3a^)u-9,x  
mw"}8y  
import org.rut.util.algorithm.SortUtil; +4HlRGH  
5us^B8Q  
/** Kr]W o8dWy  
* @author treeroot x{?sn  
* @since 2006-2-2 !t% Q{`p  
* @version 1.0 /tzlbI]z  
*/ wHWma)}-z  
public class ImprovedQuickSort implements SortUtil.Sort { tUv3jq)n%  
2qXo{C3  
private static int MAX_STACK_SIZE=4096; 4|=vxJ  
private static int THRESHOLD=10; ;AJ< LC  
/* (non-Javadoc) `@MPkC y1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T5q-" W6\  
*/ r,"7%1I  
public void sort(int[] data) { :$2Yg[Zc3  
int[] stack=new int[MAX_STACK_SIZE]; K( z[ }  
MH FaSl  
int top=-1; 3sb 5E]P  
int pivot; vzcz<i )  
int pivotIndex,l,r; l1DI*0@  
1OP" 5f  
stack[++top]=0; k:mlt:  
stack[++top]=data.length-1; ]LVnt-q  
Z)5klg$c  
while(top>0){ .jaZ|nN8`  
int j=stack[top--]; ki3 HcV  
int i=stack[top--]; -O%[!&`  
q}s K  
pivotIndex=(i+j)/2; &rP~`4Mkp  
pivot=data[pivotIndex]; @Kp1k> ov  
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SortUtil.swap(data,pivotIndex,j); | +fwvi&a  
K-6p'|  
file://partition +dM.-wW  
l=i-1; 71*>L}H  
r=j; 1\IZcJ {  
do{ t2U$m'(A&  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); vbedk+dd?A  
SortUtil.swap(data,l,r); m#;.yR  
} kU1 %f o  
while(l SortUtil.swap(data,l,r); 7JS#a=D#  
SortUtil.swap(data,l,j); &urb!tQ>&  
gW}}5Xq  
if((l-i)>THRESHOLD){ eVrNYa1>H  
stack[++top]=i; A6Q c;v+  
stack[++top]=l-1; JSRg?p\  
} v4D!7 t&v"  
if((j-l)>THRESHOLD){ s.KOBNCFa  
stack[++top]=l+1; /k) NP  
stack[++top]=j; jceHK l  
} L\YZT| K(  
%UBPoq  
} O"8P#Ed  
file://new InsertSort().sort(data); ;AltNGcM  
insertSort(data); ~ur)f AuF2  
} O/$ v69:  
/** 9\:w8M X'  
* @param data DP0Z*8Ia  
*/ GBW 7Y  
private void insertSort(int[] data) { 9>IsqYc  
int temp; 'f8 p7 _F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kR_E6Fl  
} m EFWo  
} .T{U^0 )  
} >pnz_MQ   
=/m}rcDN  
} PYaOH_X.  
}^Z< dbt  
归并排序: T%w(P ^qk  
y/H8+0sEk  
package org.rut.util.algorithm.support; gsi<S6DQ8  
A>5S]  
import org.rut.util.algorithm.SortUtil; ;2BPPZ  
f)WPOTEY  
/** /CbkqNV  
* @author treeroot r &=r/k2  
* @since 2006-2-2 WFXx70n  
* @version 1.0 ${e -ffyy  
*/ 9'l.TcVm`,  
public class MergeSort implements SortUtil.Sort{ kr6:{\DU:B  
|NXFla  
/* (non-Javadoc) ypxC1E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S;BP`g<l=  
*/ N*? WUn9]  
public void sort(int[] data) { CO7CNN  
int[] temp=new int[data.length]; )|Jr|8  
mergeSort(data,temp,0,data.length-1); ,I=O"z>9  
} 6B /Jp  
6mX:=Q  
private void mergeSort(int[] data,int[] temp,int l,int r){ 8XgVY9]Qm  
int mid=(l+r)/2;  eMztjN  
if(l==r) return ; /1U,+g^O>  
mergeSort(data,temp,l,mid); aQC 7V!v  
mergeSort(data,temp,mid+1,r); E|\3f(aF  
for(int i=l;i<=r;i++){ V` U/'N-ay  
temp=data; ;B(;2.<"J  
} j_hjCQ  
int i1=l; 2 e )  
int i2=mid+1; gZ=) qT]Pj  
for(int cur=l;cur<=r;cur++){ ;wfH^2HxE)  
if(i1==mid+1) 3$;J0{&[i  
data[cur]=temp[i2++]; ud 5x$`  
else if(i2>r) r*xq(\v  
data[cur]=temp[i1++]; 9  4 "f  
else if(temp[i1] data[cur]=temp[i1++]; l8eT{!4  
else zC[i <'h!T  
data[cur]=temp[i2++]; sY&r bJ(P  
} Idt@Hk5<&  
} 9.^-us1  
U. NeK{  
} CdE2w?1  
nvw NjN  
改进后的归并排序: dV'6m@C  
TZ)(ZKX*R  
package org.rut.util.algorithm.support; l@ (t^68OD  
3J23q  
import org.rut.util.algorithm.SortUtil; _ak.G=  
PsacXZNs\N  
/** \t[ hg  
* @author treeroot }kpfJLjY  
* @since 2006-2-2 }x>}:"P;W  
* @version 1.0 !x+MVJ]  
*/ `W6:=H  
public class ImprovedMergeSort implements SortUtil.Sort { <#:Ebofsn  
_Jt_2o%G  
private static final int THRESHOLD = 10; ]KfghRUH  
"87O4 #$  
/* a>#d=.  
* (non-Javadoc) =lw4 H_  
* 9_I[o.q   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tey,N^=ek  
*/ Q5T(;u6  
public void sort(int[] data) { Nu>sp,|A  
int[] temp=new int[data.length]; +F#=`+V  
mergeSort(data,temp,0,data.length-1); 2X qPZ]2g  
} 17?NR\Q  
N4[ B:n  
private void mergeSort(int[] data, int[] temp, int l, int r) { yL^M~lws  
int i, j, k; >^2ZM  
int mid = (l + r) / 2; AycA :<  
if (l == r) Y0R\u\b  
return; v)X[gt tf  
if ((mid - l) >= THRESHOLD) k 2 mkOb  
mergeSort(data, temp, l, mid); '` BjRg57]  
else +Y_Q?/M@8  
insertSort(data, l, mid - l + 1); y$+!%y*  
if ((r - mid) > THRESHOLD) )m$1al  
mergeSort(data, temp, mid + 1, r); /1s9;'I  
else 3Y.d&Nz  
insertSort(data, mid + 1, r - mid); "H/2r]?GT  
[M,27  
for (i = l; i <= mid; i++) { w yuJSB  
temp = data; Iqe=#hUFe!  
} 0jl:Yzo&\  
for (j = 1; j <= r - mid; j++) { RBMMXJj  
temp[r - j + 1] = data[j + mid]; N?Z+zN&P  
} U~JG1#z6  
int a = temp[l]; >n@>h$]  
int b = temp[r]; 3M`hn4)K  
for (i = l, j = r, k = l; k <= r; k++) { 7N-CtQnv  
if (a < b) { *)}Ap4[  
data[k] = temp[i++]; dT*f-W  
a = temp; 8 RzF].)  
} else { k}+MvGq  
data[k] = temp[j--]; |TNiKy  
b = temp[j]; &Nj:XX;X  
} Gx~"iM  
} N7Z(lI|a;  
} .j+2x[`l  
^Y*`D_-G  
/** f6(9wz$Trt  
* @param data O4'kS @  
* @param l ?[*@T2Ck  
* @param i m,kv EQ3  
*/ 8xeun~e"vS  
private void insertSort(int[] data, int start, int len) { *R9mgv[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); X7imUy'.  
} .lNnY8<  
} umHs" d  
} GT1 X  
} !<['iM  
||"":K  
堆排序: gn4g 43  
MFCbx>#  
package org.rut.util.algorithm.support; pXh^M{.  
nFf\tf%8  
import org.rut.util.algorithm.SortUtil; p0:&7,+a,  
4u{E D(  
/** eF gb6dSh  
* @author treeroot 0YsN82IDD  
* @since 2006-2-2 Xoa <r9  
* @version 1.0 qNuv?.7  
*/ 2C 8L\  
public class HeapSort implements SortUtil.Sort{ eL] w' }\  
=":V WHf  
/* (non-Javadoc) =."WvBKg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iu:p &h  
*/ iA{chQBr  
public void sort(int[] data) { p1`'1`.3  
MaxHeap h=new MaxHeap(); gen3"\Og{  
h.init(data); 7p"~:1hU  
for(int i=0;i h.remove(); 6m;wO r  
System.arraycopy(h.queue,1,data,0,data.length); m%[2x#  
} +-KRp1qq  
<}x|@u  
private static class MaxHeap{ MIMPJXT#.  
)MX1776kU  
void init(int[] data){ ?-6x]l=]  
this.queue=new int[data.length+1]; O}\"$n>  
for(int i=0;i queue[++size]=data; X G@>1/  
fixUp(size); pN^G[  
} aGzdur  
} VHXR)}  
Z({`9+/>u  
private int size=0; m= beB\=  
_QtQPK\+  
private int[] queue; A?{aUQB~|  
t9-\x  
public int get() { Fy+7{=?^F  
return queue[1]; 3!L<=X  
} E)Zd{9A5)  
Aaw:B?4)  
public void remove() { fU){]YP  
SortUtil.swap(queue,1,size--); {u[K ^G  
fixDown(1); _R!!4Hp<Q  
} . AQ3zpy5B  
file://fixdown y[7xK}`_  
private void fixDown(int k) { `'k's]Y  
int j; 5F_:[H =   
while ((j = k << 1) <= size) { kod_ 1LD  
if (j < size %26amp;%26amp; queue[j] j++; t BXsWY{  
if (queue[k]>queue[j]) file://不用交换 YaE['a  
break; @SMy0:c:  
SortUtil.swap(queue,j,k); J W yoh|  
k = j; ] !*  
} Zv7$epDUz  
} gV.Pg[[1  
private void fixUp(int k) { 4>ce,*B1  
while (k > 1) { b<8J;u<  
int j = k >> 1; KX`nHu;  
if (queue[j]>queue[k]) 7!QXh;u  
break; ~>-;(YU"t  
SortUtil.swap(queue,j,k); 0R!}}*Ee>q  
k = j; gu%'M:Xe  
} /n3&e  
} 0o'ML""j  
Jtk.v49Ad>  
} J$ih|nP  
+`vZg^_c`  
} 0Ukl#6  
b+#~N>|  
SortUtil: @^4M~F%  
}T*xT>p^3  
package org.rut.util.algorithm; M&\?)yG  
8J(zWV7 r  
import org.rut.util.algorithm.support.BubbleSort; #di_V"  
import org.rut.util.algorithm.support.HeapSort; ?~y(--.t;T  
import org.rut.util.algorithm.support.ImprovedMergeSort; Cot\i\]jv  
import org.rut.util.algorithm.support.ImprovedQuickSort; g1!L. On  
import org.rut.util.algorithm.support.InsertSort; ke6cZV5w  
import org.rut.util.algorithm.support.MergeSort; hy`)]>9z~  
import org.rut.util.algorithm.support.QuickSort; (9q{J(44  
import org.rut.util.algorithm.support.SelectionSort; N %/DN  
import org.rut.util.algorithm.support.ShellSort; YGO7lar  
r#w_=h)  
/** )aA9z(x  
* @author treeroot !5 :[XvI#  
* @since 2006-2-2 EF^=3  
* @version 1.0 #3[b|cL  
*/ o)D+qiA3U  
public class SortUtil { dGW7,B~  
public final static int INSERT = 1; u4^"E+y^S  
public final static int BUBBLE = 2; 8}E(UsTa  
public final static int SELECTION = 3; U4I` xw'  
public final static int SHELL = 4; R3!vS+5rR  
public final static int QUICK = 5; X|B;>q  
public final static int IMPROVED_QUICK = 6; < 3+&DV-<N  
public final static int MERGE = 7; Gbm_xEPC  
public final static int IMPROVED_MERGE = 8; M[N.H9  
public final static int HEAP = 9; z7pXpy \  
Z!l!3(<G.f  
public static void sort(int[] data) { 2}C>{*}yQ  
sort(data, IMPROVED_QUICK); '9Odw@tp  
} .`#R%4Xl  
private static String[] name={ `-YSFQ~O,  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" DN{G$$or  
}; x{o5Ha{  
[jn;| 3  
private static Sort[] impl=new Sort[]{ BiCa "  
new InsertSort(), Sg~A'dG  
new BubbleSort(), zi[M{bm  
new SelectionSort(), M{RZ-)IC  
new ShellSort(), ? Z fhz   
new QuickSort(), /%w[q:..h  
new ImprovedQuickSort(), +( (31l  
new MergeSort(), IGV.0l  
new ImprovedMergeSort(), D ;I;,Z  
new HeapSort() ~"0X,APR5  
}; _%%"Y}  
z(68^-V=:  
public static String toString(int algorithm){ Ui;s.f  
return name[algorithm-1]; 5&Kn #  
} ho$%7mc  
(uc)^lfX  
public static void sort(int[] data, int algorithm) { F@K;A%us)  
impl[algorithm-1].sort(data); ;@s~t:u  
} fR;_6?p*B  
TN_$E&69I  
public static interface Sort { C}EDl2  
public void sort(int[] data); GlD'?Mk1  
} X_@@v|UF  
zm"g,\.d  
public static void swap(int[] data, int i, int j) { }@6 %yR  
int temp = data; LbknSy C  
data = data[j]; 2/N*Uk 0  
data[j] = temp; F;@&uXYgc  
} l;kZS  
} U  {!{5l:  
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