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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。 mFk6a{+YX  
插入排序: &];:uYmMU  
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package org.rut.util.algorithm.support; 5~ip N/)E  
}Bk>'  
import org.rut.util.algorithm.SortUtil; :"Gx  
/** {7F?30: ]  
* @author treeroot 6'Sq|@VOi  
* @since 2006-2-2  []L yu  
* @version 1.0 +cXdF  
*/ 1uwzo9Yg  
public class InsertSort implements SortUtil.Sort{ QV%,s!_b  
}c]u'a!4  
/* (non-Javadoc) V;N'?Gu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pw, <0UhV  
*/ PI-o)U$Ehv  
public void sort(int[] data) { T[(4z@d`5  
int temp; :qAF}|6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); BN]{o(EB  
} 7 'B9z/  
} }57d3s  
} bVgmjt2&>  
QKP@+E_U  
} E9N.b.Q)  
*B*dWMh  
冒泡排序: -|cB7 P  
c{(4s6D  
package org.rut.util.algorithm.support; B k yW  
K lbUs\E  
import org.rut.util.algorithm.SortUtil; 'Dx_n7&=  
TGuvyY  
/** x2M{=MExE.  
* @author treeroot o0 &pSCK  
* @since 2006-2-2 .E/NlGm[  
* @version 1.0 mo*ClU7  
*/ +)<H,?/  
public class BubbleSort implements SortUtil.Sort{ .}*_NU   
_mG>^QI.  
/* (non-Javadoc) "k> ;K,:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X/AA8QV o  
*/ vVfIe5+OP  
public void sort(int[] data) { ,b${3*PPQ  
int temp; n&fV^ x  
for(int i=0;i for(int j=data.length-1;j>i;j--){ w+Oo-AGNH  
if(data[j] SortUtil.swap(data,j,j-1); {8im{]8_  
} J_@`:l0,z  
} ;p8,=w  
} Y'9<fSn5&  
} =N?K)QD`  
;n2b$MB?nM  
} WoSJp5By$  
p+.{"%  
选择排序: 6>e YG <y{  
\!J9|  
package org.rut.util.algorithm.support; F#>^S9Gml  
6v(;dolBIw  
import org.rut.util.algorithm.SortUtil; >sZ207*  
sqjv3=}  
/** ,0fYB*jk  
* @author treeroot :/6gGU>pu  
* @since 2006-2-2 dt1,! sHn  
* @version 1.0 )K>2  
*/ yS"; q  
public class SelectionSort implements SortUtil.Sort { |)pgUI2O[  
"v[?`<53^l  
/* 2nv-/ %]  
* (non-Javadoc) ;FH_qF`.  
* i9B1/?^W&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;sZHE &+  
*/ s]@k,%  
public void sort(int[] data) { <uL0 M`u3  
int temp; R)u ${  
for (int i = 0; i < data.length; i++) { >=!$(JgX  
int lowIndex = i; bA*T1Db,t>  
for (int j = data.length - 1; j > i; j--) { 3`^NaQ  
if (data[j] < data[lowIndex]) { Q VJvuiUh  
lowIndex = j; H'2Un(#Al  
} eGW~4zU  
} RxrUnMF  
SortUtil.swap(data,i,lowIndex); c ;@k\6  
} YA'_Ba(v)  
} `mo>~c7  
mj^]e/s%  
} n<3*7/-  
h_?#.z0ih;  
Shell排序: 1 z5\>F  
Yv7`5b{N.  
package org.rut.util.algorithm.support; +`$[h2Z=:  
otSF8[  
import org.rut.util.algorithm.SortUtil; -_xC,dwK  
;d{lvKk  
/** h 1 `yW#%  
* @author treeroot t1%<l  
* @since 2006-2-2 Q"QL#<N  
* @version 1.0 .!`v2_  
*/ eF%IX  
public class ShellSort implements SortUtil.Sort{ j[q$;uSD  
@ZFU< e$!  
/* (non-Javadoc) NX5NE2@^qH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uom~, k$|  
*/ /ar/4\b  
public void sort(int[] data) { ;x~[om21;  
for(int i=data.length/2;i>2;i/=2){ HZ.Jc"+M  
for(int j=0;j insertSort(data,j,i); Q{))+'s2h  
} 1WbawiG}  
} EHC^ [5  
insertSort(data,0,1); #{L !o5  
} R$xkcg2(  
{V*OYYI`R  
/** k w]m7 T  
* @param data eH y.<VX  
* @param j i<]Y0_?s  
* @param i #&jr9RB  
*/ 9'S~zG%{  
private void insertSort(int[] data, int start, int inc) { Uk0]A  
int temp; dtT2h>h9  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); DHO+JtO  
} q*kieqG  
} SjRR8p<   
} !&=%#i  
D8I)3cXa'  
} zcTY"w\b  
:1JICxAU  
快速排序: {Q@pF  
|}y6U< I  
package org.rut.util.algorithm.support; 5NECb4FG  
.1 =8c\%  
import org.rut.util.algorithm.SortUtil; UW/{q`)  
7Yjxx+X9  
/** 05>xQx?"m4  
* @author treeroot Y><")%Q  
* @since 2006-2-2 1>1ii  
* @version 1.0 *;I F^u1  
*/ >RMp`HxDf  
public class QuickSort implements SortUtil.Sort{ r31H Zx1^  
/Dn  
/* (non-Javadoc) >=Z@)PAe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b2vc  
*/ >X(,(mKi  
public void sort(int[] data) { .O+qtk!  
quickSort(data,0,data.length-1); ]CIZF,  
} @`X-=GCl  
private void quickSort(int[] data,int i,int j){ ;<yVJox  
int pivotIndex=(i+j)/2; .$,.w__m ~  
file://swap m#oZu {  
SortUtil.swap(data,pivotIndex,j); 9ywPWT[^  
.+"SDt oX  
int k=partition(data,i-1,j,data[j]); T'TxC)  
SortUtil.swap(data,k,j); s`$px2Gw  
if((k-i)>1) quickSort(data,i,k-1); vs )1Rm  
if((j-k)>1) quickSort(data,k+1,j); @Fl&@ $  
4gNF;  
} Cq0S8Or0  
/** H@8g 9;+  
* @param data 8'kA",P  
* @param i jSj (ZU6  
* @param j ZoiCdXvTN  
* @return  9g*MBe:  
*/ R{"7q:-  
private int partition(int[] data, int l, int r,int pivot) { |F'k5Lh  
do{ 1wqsGad+;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |5}~n"R5  
SortUtil.swap(data,l,r); q&-A}]  
} 0*.> >rI  
while(l SortUtil.swap(data,l,r); :K) =Hf2y  
return l; 9N[vNg<n  
} *<**rY*  
Z`l97$\  
} EPz$`#Sh"  
/?; 8F  
改进后的快速排序: _S(]/d(c  
?q%)8 E  
package org.rut.util.algorithm.support; +c699j;[  
R":nG7o  
import org.rut.util.algorithm.SortUtil; p5KM(N6f  
f]BG`rJX  
/** E&/D%}Wl  
* @author treeroot "5-S:+  
* @since 2006-2-2 hOX$|0i  
* @version 1.0 1MV\ ^l_  
*/ _`JY A  
public class ImprovedQuickSort implements SortUtil.Sort { <h/\)bPB  
oK GFDl]3  
private static int MAX_STACK_SIZE=4096; p,=:Ff}~  
private static int THRESHOLD=10; "}bk *2  
/* (non-Javadoc) $o"PQ!z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C_[V[k0(  
*/ lxRzyx  
public void sort(int[] data) { FRicHs n  
int[] stack=new int[MAX_STACK_SIZE]; fWR]L47n  
U=C8gVb{Hq  
int top=-1; "Q~6cH[#  
int pivot; @5%cP  
int pivotIndex,l,r; N>OF tP  
A}#@(ma7  
stack[++top]=0; F*QD\sG:  
stack[++top]=data.length-1; `F>1xMm  
cz/mUU  
while(top>0){ JlF0L%Rc  
int j=stack[top--]; |n;gGR\  
int i=stack[top--]; !}()mrIlP  
NA`3   
pivotIndex=(i+j)/2; %>uGzQ61  
pivot=data[pivotIndex]; ,>%AEN6N2  
&50Kn[  
SortUtil.swap(data,pivotIndex,j); -/aDq?<<  
G{ rUqo  
file://partition 3MC| O5R4  
l=i-1; eb:mp/  
r=j; nm*!#hx  
do{ |,]#vcJP#b  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Kbc-$ oneR  
SortUtil.swap(data,l,r); #kX=$Bzk  
} \PzC:H  
while(l SortUtil.swap(data,l,r); `^s(r>2  
SortUtil.swap(data,l,j); ~Gc+naE>  
pF.Ws,nQ5  
if((l-i)>THRESHOLD){ |rf\]3 F  
stack[++top]=i; 3vOI=ar=L~  
stack[++top]=l-1; `4Z#/g  
} B4&@PX"'>,  
if((j-l)>THRESHOLD){ @6i^wC  
stack[++top]=l+1; "8Pxf=   
stack[++top]=j; 9U58#  
} IqEY.2KN  
6.~(oepu  
} \ +v_6F  
file://new InsertSort().sort(data); i,ku91T  
insertSort(data); nP?(9;3*  
} 0(3t#  
/** Ih`n:aA  
* @param data f9JD_hhP'  
*/ '[5tc fG#z  
private void insertSort(int[] data) { {Y'DUt5j  
int temp; Np|i Xwl1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M.d{:&@`%  
} ^k^%w/fo  
} 3Du&KZ  
} )TyL3Z\>(  
UNYU2ze'  
} yN~=3b>  
^gkyi/z  
归并排序: Qkqn~>  
J~<:yBup}  
package org.rut.util.algorithm.support; `"(7)T{  
tq@<8?  
import org.rut.util.algorithm.SortUtil; $F G4wA  
,X\z#B  
/** EE&~D~yHUL  
* @author treeroot % C6 H(  
* @since 2006-2-2 Ks X@e)8u  
* @version 1.0 %DPtK)X1  
*/ q97Dn[>3  
public class MergeSort implements SortUtil.Sort{ d-N<VVcy\  
q.<q(r  
/* (non-Javadoc) K]kL?-A#'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3u{[(W}08  
*/ `?=AgGg  
public void sort(int[] data) { {%S1x{U}W-  
int[] temp=new int[data.length]; _vU,avw  
mergeSort(data,temp,0,data.length-1); 3tIIBOwg[  
} Y60ld7H  
|nD2k,S<?  
private void mergeSort(int[] data,int[] temp,int l,int r){ s977k2pp-  
int mid=(l+r)/2; [mWo&Ph[-  
if(l==r) return ; mW8CqW\Q5  
mergeSort(data,temp,l,mid); Q `E{Oo,  
mergeSort(data,temp,mid+1,r); /B1< N}  
for(int i=l;i<=r;i++){ 8%`Sx[  
temp=data; fRrHWE+  
} ItOVx!"@9  
int i1=l; 6Mk@,\1  
int i2=mid+1; V!},a@>p  
for(int cur=l;cur<=r;cur++){ M9f*7{c  
if(i1==mid+1) Qr0JJoHT  
data[cur]=temp[i2++]; *~&W?i  
else if(i2>r) sL&u%7>Re  
data[cur]=temp[i1++]; qU2>V  
else if(temp[i1] data[cur]=temp[i1++]; $(zJ  
else )-jvp8%BK  
data[cur]=temp[i2++]; 4,<~t>M1  
} &# @1n  
} ^x/0*t5};z  
L</"m[  
} z>y,}#D?C  
&S|laq H  
改进后的归并排序: y/i"o-}}~|  
SxH}/I|W  
package org.rut.util.algorithm.support; F=P|vYL&&  
!%@n067  
import org.rut.util.algorithm.SortUtil; UNY>Q7  
7B&nV92S  
/** j6v +S  
* @author treeroot PL8akA#  
* @since 2006-2-2 ~^5uOeTZ~  
* @version 1.0 HPpnw] _  
*/ /VJ@`]jhDf  
public class ImprovedMergeSort implements SortUtil.Sort { R9#Z= f,  
M6X f}>  
private static final int THRESHOLD = 10; `>#X,Lw$g  
/5J! s="  
/* 6Jj)[ R\5=  
* (non-Javadoc) ,bH  
* 5Cz:$-+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wq>j;\3b3  
*/ ^d2g"L   
public void sort(int[] data) { 0cS.|\ZTA  
int[] temp=new int[data.length]; 9td(MZ%i~N  
mergeSort(data,temp,0,data.length-1); ~O^_J)  
} < )?&Jf>_  
0`qq"j[6a  
private void mergeSort(int[] data, int[] temp, int l, int r) { $@#nn5^IX  
int i, j, k; (ZI&'"H  
int mid = (l + r) / 2; A!^,QRkRN  
if (l == r) 1zp,Suv  
return; j`tUx# h  
if ((mid - l) >= THRESHOLD) 9g*~X;`2  
mergeSort(data, temp, l, mid); x208^=F\\  
else Hv IN'  
insertSort(data, l, mid - l + 1); }5S2v+zE  
if ((r - mid) > THRESHOLD) #pVk%5N  
mergeSort(data, temp, mid + 1, r); $YSOkyC?  
else >i ~zG6H  
insertSort(data, mid + 1, r - mid); ,~kMkBkl~  
Jq; }q63:  
for (i = l; i <= mid; i++) { BF@VgozW  
temp = data; x)GoxH~#  
} 1R:h$* -z  
for (j = 1; j <= r - mid; j++) { HmiwpI  
temp[r - j + 1] = data[j + mid]; >l7 o/*4  
} yT,UM^'  
int a = temp[l]; x*)Wl!  
int b = temp[r]; +X- k)9  
for (i = l, j = r, k = l; k <= r; k++) { sy#Gb#=#  
if (a < b) { {6AJ>}3  
data[k] = temp[i++]; "vJADQ4F  
a = temp; vLC&C-f  
} else { Uex b>|  
data[k] = temp[j--]; 9wwvh'T&NK  
b = temp[j]; u9&p/qMx2  
} $i2gOz  
} [n^___7  
} w5|"cD#8A  
2n7[Op  
/** |On6?5((e  
* @param data :,u+[0-S  
* @param l 1|]-F;b  
* @param i -WYJ1B0v  
*/ ^:q(ksssY  
private void insertSort(int[] data, int start, int len) { iVl"H@m/  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); qI"mW@G~H  
} 2V0R|YUt  
} :I7MP   
} L\B+j+~  
} :G`_IB\  
%NBD^g F  
堆排序: b9vKux  
`BvcI n4do  
package org.rut.util.algorithm.support; -OHG1"/  
*83+!DV|  
import org.rut.util.algorithm.SortUtil; ?+!KucTF  
5_O.p3$tV  
/** *kIJv?%_}  
* @author treeroot wx1uduT)  
* @since 2006-2-2 ~<eiWDf  
* @version 1.0 9}\T?6?8pX  
*/ m1<B6*iG"  
public class HeapSort implements SortUtil.Sort{ PFc02 w  
}Yt0VtLt  
/* (non-Javadoc) a[u8x mH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B;@yOm=  
*/ 8O7JuR  
public void sort(int[] data) { uaGg8  
MaxHeap h=new MaxHeap(); s)L7o)56/  
h.init(data); IFE C_F>  
for(int i=0;i h.remove(); sv[)?1S  
System.arraycopy(h.queue,1,data,0,data.length); B|%;(bM2C  
} x?%vqg^r  
wS5hXTb"  
private static class MaxHeap{ '5Y8 rv<  
 qV}zV\Nz  
void init(int[] data){ aB Yhk|Ei  
this.queue=new int[data.length+1]; !pN,,H6Y  
for(int i=0;i queue[++size]=data; "au"\}   
fixUp(size); 4j | vzyc  
} @#V{@@3$  
} ve.4""\a  
"[8](3\v  
private int size=0; ;?y?s'>t&  
$'&5gFr9  
private int[] queue; S:5Nh^K  
USbiI %   
public int get() { )rXP2Z  
return queue[1]; e88JT_zrO  
} (zhmZm  
z><JbSE?  
public void remove() { Ri,UHI4 W  
SortUtil.swap(queue,1,size--); FVSz[n  
fixDown(1); N( /PJJ~  
} uM\~*@   
file://fixdown ,wq.C6;&  
private void fixDown(int k) { A$oYw(m#  
int j; X{ Nif G  
while ((j = k << 1) <= size) { |e9}G,1  
if (j < size %26amp;%26amp; queue[j] j++; D~1nh%x_  
if (queue[k]>queue[j]) file://不用交换 UA/3lH}  
break; 0]WM:6 h  
SortUtil.swap(queue,j,k); [<%yUy  
k = j; Bf7RW[ -v  
} *</;:?  
} UdY9*k  
private void fixUp(int k) { xLGAP-mx]  
while (k > 1) { BBp Hp  
int j = k >> 1; 8n'C@#{WV  
if (queue[j]>queue[k]) 6IvLr+I  
break; X&Mc NO6"  
SortUtil.swap(queue,j,k); NZD X93  
k = j; J|I|3h<T  
} hsl Js^  
} ckTnb  
 e%qMrR  
} Ck[Z(=b$$:  
8RocObY_W  
} #<?j784  
 @P~ u k  
SortUtil: pY:xxnE  
3rWqt  
package org.rut.util.algorithm; Gd'^vqo<  
^i\zMMR  
import org.rut.util.algorithm.support.BubbleSort; xR%CS`0R  
import org.rut.util.algorithm.support.HeapSort; Tn-H8;Hg  
import org.rut.util.algorithm.support.ImprovedMergeSort; =XYfzR  
import org.rut.util.algorithm.support.ImprovedQuickSort; HFf| >&c&  
import org.rut.util.algorithm.support.InsertSort; fs`<x*}K  
import org.rut.util.algorithm.support.MergeSort; #S1)n[  
import org.rut.util.algorithm.support.QuickSort; Ru sa &#[  
import org.rut.util.algorithm.support.SelectionSort; bhg"<I  
import org.rut.util.algorithm.support.ShellSort; b?Vu9!  
+C+3DwN  
/** $x 2t0@  
* @author treeroot 5v?6J#]2  
* @since 2006-2-2 >Cf]uiR  
* @version 1.0 D9Q%*DLd$_  
*/ u2F 3>s  
public class SortUtil { GHoPv-#  
public final static int INSERT = 1; H{+U; 6b  
public final static int BUBBLE = 2; 9aXm}  
public final static int SELECTION = 3; zS?L3*u  
public final static int SHELL = 4; Pl 5+Oo  
public final static int QUICK = 5; wlkS+$<  
public final static int IMPROVED_QUICK = 6; cOS|B1xG  
public final static int MERGE = 7; 0tl  
public final static int IMPROVED_MERGE = 8; %5uuB4P&|$  
public final static int HEAP = 9; MenI>gd?  
jIEK[vJ`  
public static void sort(int[] data) { 2Ejs{KUj  
sort(data, IMPROVED_QUICK); |_2O:7qe  
} wCkkfTO  
private static String[] name={ z[7U>q[E  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" S__ o#nf`%  
}; ^D6JckW  
esxU44  
private static Sort[] impl=new Sort[]{ V&qXsyg  
new InsertSort(), Gd"lB*^Ht  
new BubbleSort(), Z|3l2ucl  
new SelectionSort(), _~6AUwM  
new ShellSort(), rYc?y  
new QuickSort(), w8>p[F5`O  
new ImprovedQuickSort(), *S ;v406  
new MergeSort(), rs!J<CRq  
new ImprovedMergeSort(), uD<*g(R  
new HeapSort() `oq 3G }  
}; F!.@1Fi1  
+DVU"d  
public static String toString(int algorithm){ ,A_itRHH  
return name[algorithm-1]; 'e0qdY`  
} C[wnor!  
~Fisno  
public static void sort(int[] data, int algorithm) { II),m8G  
impl[algorithm-1].sort(data); O^ f[ ugs  
} 3~M8.{ U#V  
3A'd7FJ0G  
public static interface Sort { b7HS 3NYk  
public void sort(int[] data); As78yfK  
} QK//bV)  
/I: d<A  
public static void swap(int[] data, int i, int j) { /k7`TUK  
int temp = data; r@wWGbQ|L  
data = data[j]; v%B^\S3)  
data[j] = temp; AvhmN5O =  
} _RhCVoeB  
} ,]Hn*\@p[c  
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