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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。 "rVM23@ tq  
插入排序: Hz=s)6$ey  
*?VB/yO=0  
package org.rut.util.algorithm.support; }h* j{b,  
QU(Lv(/O  
import org.rut.util.algorithm.SortUtil; #V$sb1u  
/** HZjuL.Tj  
* @author treeroot Lhrlz,1  
* @since 2006-2-2 q29d=  
* @version 1.0 J4s`U/F  
*/ (j(9'DjP  
public class InsertSort implements SortUtil.Sort{ 1~j,A[&|<  
y'n<oSB}  
/* (non-Javadoc) DiZ;FHnaG?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bR$5G  
*/ 16Jjf|]j  
public void sort(int[] data) { FC  
int temp; gZ-:4G|J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0.c9 6&  
} #B q|^:nj  
} )6eFYt%c  
} K92M9=>  
}:[MSUm5  
} ,b?G]WQrHs  
:a:m>S<~  
冒泡排序: +n)bWB%  
B*P;*re  
package org.rut.util.algorithm.support; y<#Hq1  
;bL?uL  
import org.rut.util.algorithm.SortUtil; s.XxYXR\  
r{_1M>F D!  
/** B9 ,  
* @author treeroot 7[i&EPN  
* @since 2006-2-2 kBY#= e).  
* @version 1.0 t;:Yf  
*/ $Rn9*OKr  
public class BubbleSort implements SortUtil.Sort{ C;#gy-  
%eGD1.R  
/* (non-Javadoc) M'oQ<,yW-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i8DYC=r  
*/ uax kGEXr  
public void sort(int[] data) { Bo1 t}#7  
int temp; }WF6w+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _d+` Gw  
if(data[j] SortUtil.swap(data,j,j-1); 9>ZX@1]m_  
} vV*/"'>  
} Z=< D`  
} K6@ %@v  
} +ZV?yR2yn  
uC6e2py<[  
} 2z1r|?l  
Ih;D-^RQ  
选择排序: KXUJ*l-5  
R;uP^  
package org.rut.util.algorithm.support; *OHjw;xm+  
?%/*F<UVQ  
import org.rut.util.algorithm.SortUtil; |/Y!R>El  
l1%*LyD  
/** I*mBU^<9V  
* @author treeroot =/4}!B/  
* @since 2006-2-2 T b*Q4:r"  
* @version 1.0 2P{! n#"  
*/ \lyHQ-gWhc  
public class SelectionSort implements SortUtil.Sort { = N:5#A  
W 9bpKmc  
/* 6)FM83zk)K  
* (non-Javadoc) w;J#+ik  
* JD AX^]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e`)zR'As  
*/ FY]Et= p  
public void sort(int[] data) { 6+C]rEY/o  
int temp; db3.X~Cn#s  
for (int i = 0; i < data.length; i++) { 'lgS) m  
int lowIndex = i; -Byl~n3*D  
for (int j = data.length - 1; j > i; j--) { 7]hRAhJ8I  
if (data[j] < data[lowIndex]) { zP/SDW   
lowIndex = j; s8k4e6ak  
} XHY,;4  
} 6c}nP[6|  
SortUtil.swap(data,i,lowIndex); SL<EZn0F9  
} .tK]-f2  
} B<~BX [  
q\~D:z$+CO  
} 'o7V6KG  
n.o_._mu2  
Shell排序: 9$%S<v  
cO-^#di  
package org.rut.util.algorithm.support; 0_t9;;y :  
aDE}'d1qo  
import org.rut.util.algorithm.SortUtil; *P`k|-  
SW HiiF@  
/** *O-m:M!eA  
* @author treeroot yzXS{#\  
* @since 2006-2-2 4 X0ku]  
* @version 1.0 b'RBel;W  
*/ j'UW gwB  
public class ShellSort implements SortUtil.Sort{ 7qdB   
c{jTCkzq  
/* (non-Javadoc) t /lU*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cWI7];/d;  
*/ 5)gC<  
public void sort(int[] data) { _G%kEt_4  
for(int i=data.length/2;i>2;i/=2){ jLEO-<)-)  
for(int j=0;j insertSort(data,j,i); c2d1'l]n  
} vQ{mEaH  
} )xTu|V   
insertSort(data,0,1); R5<:3tk=X  
} |lVi* 4za%  
vnX~OVz2  
/** gNh4c{Al9  
* @param data yQC8Gt8  
* @param j $- GwNG  
* @param i mf2Qu  
*/ ]YB,K)WQ  
private void insertSort(int[] data, int start, int inc) { ~sCdvBA  
int temp; % "ZC9uq?  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); zZ8:>2Ps(  
} jYW-}2L  
} 2JHV*/Q  
} a3:1`c/~\  
quFNPdP  
} ?nf4K/IjZ!  
"}uV=y  
快速排序: Ul|htB<1:  
K!gocNOf  
package org.rut.util.algorithm.support; Wix4se1Ac  
@EH@_EwYV  
import org.rut.util.algorithm.SortUtil; M7neOQHq  
ket"fXqJX  
/** U#4>GO;A  
* @author treeroot ]yas]5H   
* @since 2006-2-2 DWU(ld:_  
* @version 1.0 z>spRl,dr  
*/ >W'"xK|:  
public class QuickSort implements SortUtil.Sort{ d*:J0J(  
$XFFNE`%  
/* (non-Javadoc) p{w;y6e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fc%C!^7  
*/ d ewN\  
public void sort(int[] data) { <@qJsRbhK  
quickSort(data,0,data.length-1); h9+ 7 6  
} Ia>~ph#]{`  
private void quickSort(int[] data,int i,int j){ :) T#.(mR  
int pivotIndex=(i+j)/2; wgZ6|)!0  
file://swap IZZ $p{  
SortUtil.swap(data,pivotIndex,j); kyUG+M  
~&+8m=   
int k=partition(data,i-1,j,data[j]); 4TaHS!9  
SortUtil.swap(data,k,j); szy2"~hm  
if((k-i)>1) quickSort(data,i,k-1); {CGk9g" `  
if((j-k)>1) quickSort(data,k+1,j); 'Y>@t6E4  
,^qHl+'  
} w#;y  
/** SdJkno  
* @param data z-`4DlJUS  
* @param i 8|rlP  
* @param j [uu<aRAg3O  
* @return ,v(ikPzd  
*/ Q7?[@2HN  
private int partition(int[] data, int l, int r,int pivot) { 2O0</^Z%E  
do{ HH^yruP\}  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Q_|Lv&  
SortUtil.swap(data,l,r); .vpx@_;]9  
} .WW|v  
while(l SortUtil.swap(data,l,r); iMp_1EXe  
return l; !A"-9OS2  
} ^L's45&_  
\-:4TuU  
} 'zYx4&s  
CSMx]jbb  
改进后的快速排序: [3(lk_t  
R9%"Kxm  
package org.rut.util.algorithm.support; N1'$;9 c  
'6Yx03t  
import org.rut.util.algorithm.SortUtil; us^J! s7  
E^V4O l<  
/** NKRH>2,  
* @author treeroot $(pVE}J  
* @since 2006-2-2 ~ "WN4  
* @version 1.0 ] U[4r9V  
*/ k)S'@>n{u  
public class ImprovedQuickSort implements SortUtil.Sort { }zHG]k,j  
{OW.^UIq^  
private static int MAX_STACK_SIZE=4096; Ba;tEF{X  
private static int THRESHOLD=10; 2r#W#z%vS  
/* (non-Javadoc) Yf x'7gj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~ 6Hi"w  
*/ ?) VBkA5j  
public void sort(int[] data) { l~GcD  
int[] stack=new int[MAX_STACK_SIZE]; 6"jV>CNc@  
AM4 :xz  
int top=-1; A)u,Hvn  
int pivot; p}-B>v  
int pivotIndex,l,r; -&r A<j  
XE : JL_  
stack[++top]=0; +L#Q3}=s  
stack[++top]=data.length-1; ,+E"s3NW  
-2*Pm1\Z  
while(top>0){ o$,e#q)8  
int j=stack[top--]; GhY MO6Q4  
int i=stack[top--]; rFYw6&;vOi  
R"[U<^  
pivotIndex=(i+j)/2; [!b=A:@  
pivot=data[pivotIndex]; wRj&k(?*  
v,,Dz8!Ty  
SortUtil.swap(data,pivotIndex,j); Y kcN-  
=BBDh`$R  
file://partition &e1(|qax  
l=i-1; R}\n @X*  
r=j; z4*`K4W  
do{ IHNl`\Le  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); el^WBC3  
SortUtil.swap(data,l,r); 6?KJ"Ai9  
} B}Sl1)E  
while(l SortUtil.swap(data,l,r); X##hSGQM  
SortUtil.swap(data,l,j); *W=R:Bl!  
_.3O(?p,  
if((l-i)>THRESHOLD){ #Ue_  
stack[++top]=i; ]jwF[D  
stack[++top]=l-1; UU]a).rz  
} w:o,mzuXK  
if((j-l)>THRESHOLD){ %jmL#IN)  
stack[++top]=l+1; >^%TY^7n  
stack[++top]=j; dzyp:\&9  
} %PxJnMb?  
@wOX</_g  
} 5j-? Uf  
file://new InsertSort().sort(data); bupDnTF  
insertSort(data); MbjMO"}  
} i?CXDuL  
/** ^`oyf{w@  
* @param data .wz.Jr`{  
*/ S(h+,+289  
private void insertSort(int[] data) { Cw&U*H  
int temp; Tjza3M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >TZyax<:  
} =$awUy  
} {/SLDyf%Z  
} ekhx?rz  
5$L=l  
} W&8)yog.  
hQ}B?'>  
归并排序: N?krlR  
p1(<F_Kta  
package org.rut.util.algorithm.support; rP7f~"L  
B]|"ePj-  
import org.rut.util.algorithm.SortUtil; XKepk? E  
IJV1=/ NJW  
/** 5t~p99#?  
* @author treeroot 'J"m`a8no  
* @since 2006-2-2 E]j2%}6Z%  
* @version 1.0 \dw*yZ^  
*/ zeG_H}[2&  
public class MergeSort implements SortUtil.Sort{ D "9Hv3  
gl~>MasV&  
/* (non-Javadoc) mu}T,+9\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZF6?N?t}h8  
*/ HCTjFW>C  
public void sort(int[] data) { o&b1-=MC2  
int[] temp=new int[data.length]; cq \()uF'c  
mergeSort(data,temp,0,data.length-1); Erd)P  
} 1dahVc1W  
2[R{IV8e  
private void mergeSort(int[] data,int[] temp,int l,int r){ _0(Bx?[h  
int mid=(l+r)/2; Pf?y!d K<  
if(l==r) return ; V8{5 y <Y>  
mergeSort(data,temp,l,mid); iN+Tig?c  
mergeSort(data,temp,mid+1,r); E||[(l,b  
for(int i=l;i<=r;i++){ `8rInfV  
temp=data; s j{i  
} KZ;Q71  
int i1=l; ]K(>r#'nH  
int i2=mid+1; *Af:^>mh  
for(int cur=l;cur<=r;cur++){ [exIK  
if(i1==mid+1) TwZASn]o  
data[cur]=temp[i2++]; K}p!W"!o  
else if(i2>r) W4~:3 Sk  
data[cur]=temp[i1++]; Ot#O];3  
else if(temp[i1] data[cur]=temp[i1++];  iI(7{$y  
else :RE.md  
data[cur]=temp[i2++]; ypK1 sw  
} ApxGrCu  
} lYq4f|5H}m  
s9'lw'  
} }+4^ZbX+:  
<Fa]k'<^)  
改进后的归并排序: 1EvK\  
E Z}c8b  
package org.rut.util.algorithm.support; %t:pG}A>:C  
\KJ\>2Y  
import org.rut.util.algorithm.SortUtil; 3A(sT}  
}+1Y>W7q  
/** Eu^? e  
* @author treeroot U ,wJ8  
* @since 2006-2-2 ufekhj  
* @version 1.0 7jL3mI;n%;  
*/ 3j iSvrfI  
public class ImprovedMergeSort implements SortUtil.Sort { ]d|:&h  
bEJz>oyW"  
private static final int THRESHOLD = 10; uYv"5U]MFv  
l].Gz`L  
/* toCxY+"nbU  
* (non-Javadoc) QXcSDJ  
* Gcs eq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :"4Pr/}rT  
*/ c{dge/2yb  
public void sort(int[] data) { |*+f N8  
int[] temp=new int[data.length]; _z$lg]q  
mergeSort(data,temp,0,data.length-1); sm~{fg  
} ~;*SW[4  
(!@ Q\P  
private void mergeSort(int[] data, int[] temp, int l, int r) { mu?6Phj  
int i, j, k; bo  J  
int mid = (l + r) / 2; &(] @L\A  
if (l == r) 1dy>a=W  
return; 9$u'2TV  
if ((mid - l) >= THRESHOLD) g5 J[ut  
mergeSort(data, temp, l, mid); z"@yE*6  
else !5;A.f  
insertSort(data, l, mid - l + 1); jeM/8~^4-  
if ((r - mid) > THRESHOLD) [8o!X)  
mergeSort(data, temp, mid + 1, r); t)*MLg<C  
else R\B-cU[,  
insertSort(data, mid + 1, r - mid); nf7l}^/UE  
eXqS9`zKr  
for (i = l; i <= mid; i++) { JQhw>H9&  
temp = data; :q xd])-  
} Xo{|m[,  
for (j = 1; j <= r - mid; j++) { Gs% cod  
temp[r - j + 1] = data[j + mid]; q@}eYQ=P|e  
} !e}LB%zf  
int a = temp[l]; .1[[Y}  
int b = temp[r]; &GC`4!H  
for (i = l, j = r, k = l; k <= r; k++) { dvAvG.;U  
if (a < b) { wK_I"  
data[k] = temp[i++]; cnUYhxE+s  
a = temp; FM)Es&p&  
} else { YB^[HE\#y  
data[k] = temp[j--]; gdu8O!9)  
b = temp[j]; TfYXF`d  
} [=63xPxs.  
} }T}9AQ}|  
} <9]9;   
8KQ]3Z9p  
/** >0W:snNK  
* @param data o<hT/ P  
* @param l u7oHqo`  
* @param i dsx'l0q 'i  
*/ VZ`L-P$AF  
private void insertSort(int[] data, int start, int len) { I?l%RdGW  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [q/tKdo@  
} \Qh{uk[  
} x>?jfN,e  
} >>**n9\q  
} f#s /Ycp+  
39|4)1e  
堆排序: -\b$5oa(  
|]d A`e&y  
package org.rut.util.algorithm.support; x2|YrkGv  
:3z`+5Y*  
import org.rut.util.algorithm.SortUtil; ~JJuM  
~i4h.ZLj  
/** _k0 X)N+li  
* @author treeroot q"|,HpQ  
* @since 2006-2-2 \a|Fh hI  
* @version 1.0 P,2FH2Eyj  
*/ Hqel1J  
public class HeapSort implements SortUtil.Sort{ ~VRt 6C  
j{i3lGaN  
/* (non-Javadoc) 7gLN7_2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) : "|M  
*/ 1e 8J-Nkj  
public void sort(int[] data) { T+OQa+E@P  
MaxHeap h=new MaxHeap(); \,-t]$9  
h.init(data); e;y\v/A  
for(int i=0;i h.remove(); k* ayzg3F>  
System.arraycopy(h.queue,1,data,0,data.length); lzQmD/i*  
} . C g2Y  
1ke H1[  
private static class MaxHeap{ FCC9Ht8U?  
}/ p>DMN  
void init(int[] data){ 9t.u9C=!F  
this.queue=new int[data.length+1]; QJL%J  
for(int i=0;i queue[++size]=data; DS@ZE Q`F  
fixUp(size); lG\6z"K  
} tSr.0'CE  
} /'V(F* g  
,cbCt  
private int size=0; HC4vet  
"k)}qI{  
private int[] queue; Osb#<9{}  
:u%Jrc (W  
public int get() { 4,8=0[eRG  
return queue[1]; kEH(\3,l  
} h|=<I)}z  
MeXzWLH  
public void remove() { YEL, TU  
SortUtil.swap(queue,1,size--); PdUlwT? 8C  
fixDown(1); WOW:$.VO^  
} r#ISIgJXG  
file://fixdown p;[">["  
private void fixDown(int k) { xWwQm'I2}  
int j; Hm>M}MF3  
while ((j = k << 1) <= size) { Z /#&c  
if (j < size %26amp;%26amp; queue[j] j++; u&q RK>wLa  
if (queue[k]>queue[j]) file://不用交换 f^P:eBgpx  
break; Uxla,CCp-  
SortUtil.swap(queue,j,k); ~ .}  
k = j; 82S?@%}#J  
} e)pQh& uD  
} y4%u< /  
private void fixUp(int k) { tE i-0J  
while (k > 1) { E?{{z4  
int j = k >> 1; -^C't_Q o  
if (queue[j]>queue[k]) 6TN!63{Cz  
break; ^BDM'  
SortUtil.swap(queue,j,k); a J%&Y5L  
k = j; N7S?m@  
} RoV^sbWFt  
} V/X4WZs|i  
*Nv!Kuk  
} cs'ylGH  
0q|.]:][Eo  
} fOE8{O^W  
X2X.&^  
SortUtil: 5H (CP  
dKs^Dq  
package org.rut.util.algorithm; |T!^&t  
9ANC,+0p  
import org.rut.util.algorithm.support.BubbleSort; aq'd C=y  
import org.rut.util.algorithm.support.HeapSort; ikr|P&e#u  
import org.rut.util.algorithm.support.ImprovedMergeSort; koi QJdK  
import org.rut.util.algorithm.support.ImprovedQuickSort;  b)7uz>I  
import org.rut.util.algorithm.support.InsertSort; j"FX ?|4  
import org.rut.util.algorithm.support.MergeSort; WD wW`  
import org.rut.util.algorithm.support.QuickSort; <78]OZ] Z  
import org.rut.util.algorithm.support.SelectionSort; X67.%>#3  
import org.rut.util.algorithm.support.ShellSort; ]}4{|& e  
wv.FL$f[@  
/** udRum7XW 3  
* @author treeroot u/`jb2eEU:  
* @since 2006-2-2 yc./:t1at>  
* @version 1.0 >(v%"04|e  
*/ `t0?PpUo  
public class SortUtil { !$ $|zB%  
public final static int INSERT = 1; hD~P)@^  
public final static int BUBBLE = 2; -JL  
public final static int SELECTION = 3; m7zx,bz>  
public final static int SHELL = 4; ooJ ^8L  
public final static int QUICK = 5; oSmv  (O  
public final static int IMPROVED_QUICK = 6; tc go 'V  
public final static int MERGE = 7; $U,`M"  
public final static int IMPROVED_MERGE = 8; 2_^{Vez@I  
public final static int HEAP = 9; SfKm]Z>Hp  
d>ltL`xn  
public static void sort(int[] data) { [;bZQ6JR  
sort(data, IMPROVED_QUICK); TTg>g~t`  
} @]*b$6tt  
private static String[] name={ v&BKl  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" gv&%2e}_  
}; +&LzLF.bK  
Va^AEuzF  
private static Sort[] impl=new Sort[]{ Sq9I]A  
new InsertSort(), \/rK0|2A  
new BubbleSort(), Gp=X1 F  
new SelectionSort(), B;SN}I  
new ShellSort(), ;B%NFvG  
new QuickSort(), z tS P4lW  
new ImprovedQuickSort(), )Fc` rY  
new MergeSort(), ]Lc:M'V#  
new ImprovedMergeSort(), ]ne&`uO  
new HeapSort() b;wf7~a*  
}; "AN2K  
%GRD3S  
public static String toString(int algorithm){ |aH;@V  
return name[algorithm-1]; pdcP;.   
} H*#L~!]  
@"M%ZnFu  
public static void sort(int[] data, int algorithm) { UjmBLXz@T  
impl[algorithm-1].sort(data); oY!nM%z/  
} 44H#8kV  
13oR-Stj|  
public static interface Sort { nC^|83  
public void sort(int[] data); V^ O dTM  
} owClnp9K  
_dCsYI%  
public static void swap(int[] data, int i, int j) { 2?3D` `  
int temp = data; ;^5d^-T  
data = data[j]; yNY *Fl!  
data[j] = temp; K6#9HF'2I  
} 7X3<8:%  
} N3P!<J/tc  
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