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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。 (a~V<v"  
插入排序: J7~Kjl  
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package org.rut.util.algorithm.support; ?%/*F<UVQ  
v+dT7* ^@  
import org.rut.util.algorithm.SortUtil; ha9 d z  
/**  (C%qA<6  
* @author treeroot QkLcs6)R  
* @since 2006-2-2 NH1ak(zHW  
* @version 1.0 y5Fgf3P@ju  
*/ IVeA[qA0  
public class InsertSort implements SortUtil.Sort{ .Np!Qp1*  
4 XGEw9`3  
/* (non-Javadoc) Zc*#LsQh.`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?+$EPaC2  
*/ Fl"LK:)  
public void sort(int[] data) { n@S|^cH  
int temp; ^ ,[gO#hgz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %WYveY  
} A-eCc#I  
} |>-0q~  
} zOJzQZ~  
v[a4d&P  
} ZB5NTNf>  
G B>T3l"  
冒泡排序: akwS;|SZ  
"IWL& cH3  
package org.rut.util.algorithm.support; w"A>mEex<  
"c![s%  
import org.rut.util.algorithm.SortUtil; $]?M[sL\N7  
W=2]!%3#  
/** dQ#oY|a  
* @author treeroot H{_6e6`e.  
* @since 2006-2-2 lg 1r]  
* @version 1.0 u:,B&}j  
*/ Qr?(2t#  
public class BubbleSort implements SortUtil.Sort{ 0.1?hb|p5T  
6*I=% H|  
/* (non-Javadoc) q@Zeu\T,*#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nzU0=w}V  
*/ 1W9uWkk_d  
public void sort(int[] data) { 9FF  
int temp; ^a#W|-:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ '2{60t_A  
if(data[j] SortUtil.swap(data,j,j-1); ntZHO}'  
} j3>&Su>H4  
} 8Z 0@-8vi  
} R]o2_r7N"}  
} q-e3;$  
Su'l &]  
} T\Jm=+]c!  
@^HZTuP2;  
选择排序: Tb] h<S  
\x"BgLSE  
package org.rut.util.algorithm.support; \JNWL yw  
K{FBrh  
import org.rut.util.algorithm.SortUtil; VxU{ZD~<Z"  
,~NJ}4wP  
/** cOP%R_ak?  
* @author treeroot i^rHZmT  
* @since 2006-2-2 5[^Rf'wy  
* @version 1.0 mrlhj8W?!  
*/ tpP68)<ns  
public class SelectionSort implements SortUtil.Sort { w}x&wWM  
[Fr <tKtB  
/* }jg,[jw_"X  
* (non-Javadoc) >E>'9@Uh  
* 6h\; U5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sT91>'&  
*/ T`Xz*\}Zb  
public void sort(int[] data) { >~T2MlRux  
int temp; [kI[qByf  
for (int i = 0; i < data.length; i++) { ,4(m.P10  
int lowIndex = i; q]y{ 4"=5  
for (int j = data.length - 1; j > i; j--) { :/;;|lGw  
if (data[j] < data[lowIndex]) { eW[](lGWM  
lowIndex = j; )U{IQE;T#  
} AQ,%5MeqJ  
} w X.]O!^X~  
SortUtil.swap(data,i,lowIndex); L0ZAF2O  
} &=lh Kt  
} ` )~CT  
N2Cf(  
} <ol? 9tm  
+^%0/0e  
Shell排序: @$?*UI6y  
{.r9l  
package org.rut.util.algorithm.support; H8!lSRq  
H7Pw>Ta ;  
import org.rut.util.algorithm.SortUtil; Wk]E6yz6  
j8ac8J,}c  
/** uecjR8\e  
* @author treeroot CbT ;#0  
* @since 2006-2-2 wd Di5-A4  
* @version 1.0 tj tN<y  
*/ wgZ6|)!0  
public class ShellSort implements SortUtil.Sort{ kyUG+M  
7nbaR~ZV  
/* (non-Javadoc) 4TaHS!9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) szy2"~hm  
*/ {CGk9g" `  
public void sort(int[] data) { 'Y>@t6E4  
for(int i=data.length/2;i>2;i/=2){ `(@{t:L  
for(int j=0;j insertSort(data,j,i); w#;y  
} p1,.f&(f  
} z-`4DlJUS  
insertSort(data,0,1); IVG77+O# }  
} /ASpAl[J  
[uu<aRAg3O  
/** zB+zw\ncN  
* @param data @G=_nZxv  
* @param j YU1z\pK  
* @param i f7 zGz  
*/ aOW$H:b  
private void insertSort(int[] data, int start, int inc) { 5K$d4KT  
int temp; +kOXa^K  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )'`@rq!  
} +< c(;Ucl?  
} 7T=:dv  
} {uiL91j.  
v79\(BX  
} <*djtO  
wUmcA~3D  
快速排序: xc$jG?83#  
VqdR  
package org.rut.util.algorithm.support; +\MGlsMK@.  
^+9i~PjL  
import org.rut.util.algorithm.SortUtil; 'tq4-11xB  
AXpyia7nU  
/** e:=+~F(f  
* @author treeroot .OD{^Kq2  
* @since 2006-2-2 ?/Z5%?6  
* @version 1.0 (APGz,^9#  
*/ R,W w/D  
public class QuickSort implements SortUtil.Sort{ 1zY" Uxp  
0u ,nSvch  
/* (non-Javadoc) hu-6V="^9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A,%NdM;t=5  
*/ J|dj`Z ?  
public void sort(int[] data) { ?,*KAGg%  
quickSort(data,0,data.length-1); ef -PlGn  
} `qj24ehc  
private void quickSort(int[] data,int i,int j){ c]/&xRd  
int pivotIndex=(i+j)/2; +v|]RgyW)  
file://swap ,a} vx"~  
SortUtil.swap(data,pivotIndex,j); O@,9a~Ghd  
:-1 i1d  
int k=partition(data,i-1,j,data[j]); mbO.Kyfen  
SortUtil.swap(data,k,j); CrEC@5 j  
if((k-i)>1) quickSort(data,i,k-1); K=;oZYNd  
if((j-k)>1) quickSort(data,k+1,j); uJL[m(G  
Z~ DR,:  
} Z<$ y)bf  
/** (hIy31Pf  
* @param data ]llvG \  
* @param i jftf]n&Z(q  
* @param j Z`kI6  
* @return }e&Z"H |  
*/ gJuA*^  
private int partition(int[] data, int l, int r,int pivot) { EY[J;H_b  
do{ RL1cx|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 66Xo3 o  
SortUtil.swap(data,l,r); Ea?u5$>gY"  
} A$ o?_  
while(l SortUtil.swap(data,l,r); & 13#/  
return l; 1WLaJ%Fv  
} :%"$8o*0W  
=^gZJ@  
} VY'1 $  
z<n&P7k5j  
改进后的快速排序: C2W&*W*  
3X}>_tj  
package org.rut.util.algorithm.support; %8T"h  
!Ytr4DtM  
import org.rut.util.algorithm.SortUtil; dO\irv)  
nL&[R}@W  
/** wm_o(Z}  
* @author treeroot #N `Z)}Jm  
* @since 2006-2-2 @(LEuYq}  
* @version 1.0 R3@$ao  
*/ !;;WS~no3  
public class ImprovedQuickSort implements SortUtil.Sort {  .'^Pg  
L:RMZp*bK  
private static int MAX_STACK_SIZE=4096; KJN{p~Q  
private static int THRESHOLD=10; e'1}5Ky  
/* (non-Javadoc) S(h+,+289  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tjza3M  
*/ 8yn}|Y9Fu  
public void sort(int[] data) { ^jZ4tH3K  
int[] stack=new int[MAX_STACK_SIZE]; SpiI9)gp  
RS[>7-9  
int top=-1; m8<l2O=m  
int pivot; Kq2,J&Ca3  
int pivotIndex,l,r; ^%k[YJtB=i  
<46fk*  
stack[++top]=0; V<G=pPC'H  
stack[++top]=data.length-1; $&[}+??  
x6B_5eF  
while(top>0){ h[I~D`q)v  
int j=stack[top--]; 6$*ZH *  
int i=stack[top--]; v6`TbIq%  
w-9fskd6e  
pivotIndex=(i+j)/2; ([L5i&DT  
pivot=data[pivotIndex]; $oU40HA)W]  
{9*k \d/;  
SortUtil.swap(data,pivotIndex,j); UFY_.N~  
7Q3a0`Iq  
file://partition k874tD  
l=i-1; x6={)tj  
r=j; tgB\;nbB  
do{ [agp06 $D?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "OO"Ab{t  
SortUtil.swap(data,l,r); l9Sx'<  
} o&b1-=MC2  
while(l SortUtil.swap(data,l,r); cq \()uF'c  
SortUtil.swap(data,l,j); p8a \> {  
1dahVc1W  
if((l-i)>THRESHOLD){ 2[R{IV8e  
stack[++top]=i; _0(Bx?[h  
stack[++top]=l-1; Pf?y!d K<  
} V8{5 y <Y>  
if((j-l)>THRESHOLD){ iN+Tig?c  
stack[++top]=l+1; }hd:avze  
stack[++top]=j; `8rInfV  
} W_ hckq.  
# ^~[\8v>  
} |T@\ -8Ok  
file://new InsertSort().sort(data); (:2,Rr1"  
insertSort(data); 1JXa/f+  
} Q]d3a+dK  
/**  ^q=D!g  
* @param data _@Le MNv  
*/ llP 5  
private void insertSort(int[] data) { JD}"_,-  
int temp; t^zmv PDK  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ">^O{X\  
} $Q cr  
}  B1!b@0^  
} 0kdPr:B Q0  
Z U^dLN- N  
} KixS)sG  
Q-g}{mFS  
归并排序: T2^0Q9E?  
) ]x/3J@  
package org.rut.util.algorithm.support; 43 h0i-%1  
xVn"xk  
import org.rut.util.algorithm.SortUtil; ,AO]4Ec  
42wa9UL<Ka  
/** RiX~YL eM  
* @author treeroot u79,+H@ep  
* @since 2006-2-2 ZH<:YOQ  
* @version 1.0 )|?s!rw +  
*/ *6trK`tx^  
public class MergeSort implements SortUtil.Sort{ 8 aHs I(  
w[S!U<9/  
/* (non-Javadoc)  8~>5k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }t^N|I  
*/ k[p7)ec  
public void sort(int[] data) { ~\^h;A'3  
int[] temp=new int[data.length]; r- ];@  
mergeSort(data,temp,0,data.length-1); ] %y3*N@AZ  
} 6cV -iDOH  
gI SP .  
private void mergeSort(int[] data,int[] temp,int l,int r){ >5Rcj(-&l  
int mid=(l+r)/2; NlS/PWc6(  
if(l==r) return ; ,#FK3;U  
mergeSort(data,temp,l,mid); }bxW@(bs  
mergeSort(data,temp,mid+1,r); l" #}g%E  
for(int i=l;i<=r;i++){ L-T3{I,3  
temp=data; lnk`D(>W  
} bo  J  
int i1=l; l12_&o"C~  
int i2=mid+1; 9$u'2TV  
for(int cur=l;cur<=r;cur++){ g5 J[ut  
if(i1==mid+1) z"@yE*6  
data[cur]=temp[i2++]; 9svnB@  
else if(i2>r) y.l`NTT] <  
data[cur]=temp[i1++]; 5g{F-  
else if(temp[i1] data[cur]=temp[i1++]; K2u$1OKv  
else t'@qb~sf  
data[cur]=temp[i2++]; !u0qF!/W  
} VQQtxHTC3  
} $]Vvu{  
dBKceL v  
} ;%j1'VI  
^\z.E?v%  
改进后的归并排序: <{"]&bl  
El}."}l&  
package org.rut.util.algorithm.support; ,(6U3W*bu  
l<]@5"wN  
import org.rut.util.algorithm.SortUtil; 9,4Lb]  
JIl<4 %A  
/** *hP9d;-Ar  
* @author treeroot %$)[qa3  
* @since 2006-2-2 c<`Z[EY(t  
* @version 1.0 -Tw96 dv  
*/ #Tjv(O[&  
public class ImprovedMergeSort implements SortUtil.Sort { -xc*R%k  
B|~tW21  
private static final int THRESHOLD = 10; ;!JI$_ -\  
S-^RZ"  
/* i9qn_/<c  
* (non-Javadoc) =-r[ s%t &  
* &3SQVOW ~T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8e`'Ox_5a  
*/ {PXN$p:'  
public void sort(int[] data) { GtCbzNY  
int[] temp=new int[data.length]; l 4zl|6%  
mergeSort(data,temp,0,data.length-1); \m3;<A/3n  
} L@"1d.k_  
Yy$GfjJtL]  
private void mergeSort(int[] data, int[] temp, int l, int r) { Vd-\_VP20  
int i, j, k; dQ5_=( 9  
int mid = (l + r) / 2; }E\ b_.  
if (l == r) p@H3NX  
return; vakAl;  
if ((mid - l) >= THRESHOLD) $\0%"S  
mergeSort(data, temp, l, mid); dc .oK4G}  
else :Kl~hzVSOa  
insertSort(data, l, mid - l + 1); JP2zom  
if ((r - mid) > THRESHOLD) |6%B2I&c  
mergeSort(data, temp, mid + 1, r); 'Y ZYRFWXM  
else FY^[?lj  
insertSort(data, mid + 1, r - mid); WW'8&:x  
h@5mVTb}i  
for (i = l; i <= mid; i++) { TsPx"+>7`  
temp = data; bOt6q/f  
} 1<y|,  
for (j = 1; j <= r - mid; j++) { eVobs2s  
temp[r - j + 1] = data[j + mid]; C6=P(%y  
} _Ra$"j  
int a = temp[l]; Vt {uG  
int b = temp[r]; 'w?*4H  
for (i = l, j = r, k = l; k <= r; k++) { _%M5 T  
if (a < b) { 7fVlA"x  
data[k] = temp[i++]; hP=^JH  
a = temp; _&Hq`KJm  
} else { E^:8Jehq  
data[k] = temp[j--]; 7r`A6 \ !  
b = temp[j]; D;pfogK @  
} na;U]IK  
} v&hQ;v  
} YceX)  
h}X^  
/** ? 1OZEzA!  
* @param data {9tKq--@E9  
* @param l 2;Ij~~  
* @param i 2VrO8q(  
*/ 7q>Y)*V  
private void insertSort(int[] data, int start, int len) { Xndgs}zz  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); mVg$z  
} Hh_Yd)  
} d-=RS]j;j  
} wj-=#gyAoo  
} }9&Z#1/  
y"Fp4$qb  
堆排序: V &K:~[M  
#1INOR9  
package org.rut.util.algorithm.support; 5B&#Sh`r  
dM%#DN8 l  
import org.rut.util.algorithm.SortUtil; 3D)gy9T&l  
7oj ^(R,  
/** G:W4<w  
* @author treeroot u&q RK>wLa  
* @since 2006-2-2 .?L&k|wX-  
* @version 1.0 HN/ %(y  
*/ v"y0D  
public class HeapSort implements SortUtil.Sort{ e)pQh& uD  
C+, JLK  
/* (non-Javadoc) E?{{z4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }:5_vH0  
*/ hJr cy!P<a  
public void sort(int[] data) { cQ= "3M)~r  
MaxHeap h=new MaxHeap(); s*"Yi~  
h.init(data); 4fK(<2i  
for(int i=0;i h.remove(); > 3<P^-9L  
System.arraycopy(h.queue,1,data,0,data.length); ,/d R  
} CdxEY  
4eZ  
private static class MaxHeap{ &d"c6il[  
X2X.&^  
void init(int[] data){ 5H (CP  
this.queue=new int[data.length+1]; dKs^Dq  
for(int i=0;i queue[++size]=data; C$9+p@G6  
fixUp(size); 9ANC,+0p  
} aq'd C=y  
} hxIG0d!o  
8db J'  
private int size=0; @8IY J{=  
$$U Mc-Pq  
private int[] queue; Who7{|M\'  
\E9Hk{V:6  
public int get() { +Dg%ec  
return queue[1]; XCQS_'D  
} 0* G5Vd  
!1i(6?~#4  
public void remove() { 9}~WwmC|x  
SortUtil.swap(queue,1,size--); @x9DV{j)V  
fixDown(1); N|Cx";,|FZ  
} eBZa 9X$  
file://fixdown cY%[UK$l  
private void fixDown(int k) { c\X0*GX  
int j; Jr0D:  
while ((j = k << 1) <= size) { *?;<buJb?  
if (j < size %26amp;%26amp; queue[j] j++; OYcf+p"<\  
if (queue[k]>queue[j]) file://不用交换 JfJUOaL  
break; L@ ,-V  
SortUtil.swap(queue,j,k); fZoV\a6Kj  
k = j; Dj=OUo[[d  
} 2h<{~;  
} .rfufx9Sw  
private void fixUp(int k) { ',?9\xEB  
while (k > 1) { Q o}&2m  
int j = k >> 1; e-$ U .cx  
if (queue[j]>queue[k]) %+PWcCmn  
break; J. ]~J|K  
SortUtil.swap(queue,j,k); : K%{?y  
k = j; ]1A"l!yf  
} 'b#`)w@/=  
} 6`sOhVD  
K<@gU\-!  
} #St=%!  
;aZ$qgN*Y  
} ,@+ 7(W  
MQL1/>j;  
SortUtil: ,2Y P D4  
fz%I'+!  
package org.rut.util.algorithm; E)eRi"a46  
'4gi*8Y  
import org.rut.util.algorithm.support.BubbleSort; YkRv~bc1]  
import org.rut.util.algorithm.support.HeapSort; }E=:k&IDPB  
import org.rut.util.algorithm.support.ImprovedMergeSort; >Ab>"!/'K  
import org.rut.util.algorithm.support.ImprovedQuickSort; DqgYc[UGA  
import org.rut.util.algorithm.support.InsertSort; yo)a_rY  
import org.rut.util.algorithm.support.MergeSort; Of)EBa<5^  
import org.rut.util.algorithm.support.QuickSort; v 4@=>L  
import org.rut.util.algorithm.support.SelectionSort; 1<hj3  
import org.rut.util.algorithm.support.ShellSort; s?;rP,{:p  
b9M.p*!  
/** 2o0.ttBAqZ  
* @author treeroot 0\ G`AO;D  
* @since 2006-2-2 kcy?;b;z  
* @version 1.0 &^ECQ  
*/ X[L6Av  
public class SortUtil { ]~my<3j}or  
public final static int INSERT = 1; gu+c7qe  
public final static int BUBBLE = 2; =NyN.^bwT  
public final static int SELECTION = 3; uzf@49m]m  
public final static int SHELL = 4; g8 (zvG;Y  
public final static int QUICK = 5; -4P2 2  
public final static int IMPROVED_QUICK = 6; L2s)B  
public final static int MERGE = 7; 1}#(4tw)  
public final static int IMPROVED_MERGE = 8; cswX?MN  
public final static int HEAP = 9; FhJ8}at+e  
l26DPtWi  
public static void sort(int[] data) { j M%qv  
sort(data, IMPROVED_QUICK); Cm:&n|  
} lO482l_t  
private static String[] name={ ,vBi)H  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SK2nxZOH  
}; TNs0^h)  
[@Hv,  
private static Sort[] impl=new Sort[]{ auOYi<<>W  
new InsertSort(), VKtrSY}6T  
new BubbleSort(), 8'=8!V  
new SelectionSort(), >n,RBl  
new ShellSort(), 5#~ARk*?a  
new QuickSort(), SB#YV   
new ImprovedQuickSort(), 0- GA,I_  
new MergeSort(), PV?XpT  
new ImprovedMergeSort(), :tP:X+?O  
new HeapSort() %N\pfZ2\  
}; !"u) `I2  
Nrl&"IK|J  
public static String toString(int algorithm){ <v<TsEI  
return name[algorithm-1]; nQ\ +Za==  
} lQs|B '  
bP;cDQ(g  
public static void sort(int[] data, int algorithm) { 8i!~w 7z  
impl[algorithm-1].sort(data); uq;,h46ki  
} zh5{t0E}C  
76[O3%  
public static interface Sort { 9XGzQ45R  
public void sort(int[] data); F{*S}&q*)o  
} 'L#qR)t  
du2q6"  
public static void swap(int[] data, int i, int j) { iqecm]Z0  
int temp = data; (5@9j  
data = data[j]; 8+Lig  
data[j] = temp; 5TlPs_o  
} .Z=D|&!  
} WeGT}  
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3+5=?,请输入中文答案:八 正确答案:八