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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。 q.4DwY5 L  
插入排序: ]2+(i  
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package org.rut.util.algorithm.support; v?rN;KY#pK  
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import org.rut.util.algorithm.SortUtil; d>f5T l\E  
/** qdhD6#r  
* @author treeroot "cZ.86gG`:  
* @since 2006-2-2 Q6E80>  
* @version 1.0 9j/B3CjW  
*/ ul E\>5O4h  
public class InsertSort implements SortUtil.Sort{ :HC{6W`$  
LdcP0G\"VG  
/* (non-Javadoc) a[!':-R`s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b1+Nm  
*/ LF8B5<[O  
public void sort(int[] data) { Y (Q8P{@(  
int temp; gyIPG2d  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aE+E'iL  
} p-Z5{by  
} zPn8>J<.0Q  
} 'sC{d&c  
*ZHk^d:  
} oPi)#|jcb  
ke0Vy(3t{h  
冒泡排序: 1mf_1spB  
0W@C!mD~  
package org.rut.util.algorithm.support; IaW8  
>PTq5pk  
import org.rut.util.algorithm.SortUtil; Z|u_DaSrr|  
x9a0J1Nb-h  
/** Xa36O5$4]9  
* @author treeroot Li}yK[\]  
* @since 2006-2-2 |yS4um(w  
* @version 1.0  u >x2  
*/ U7O2.y+  
public class BubbleSort implements SortUtil.Sort{ <I7UyCAF  
Z# 1Qj9  
/* (non-Javadoc) Fik*7!XQ8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~*&_zPTN  
*/ 8<xJmcTEwO  
public void sort(int[] data) { wI)W:mUZZ  
int temp; |(Sqd;#v  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Rzz*[H  
if(data[j] SortUtil.swap(data,j,j-1); Te;`-E L  
} [qc90)^Q,  
} cdk;HK_Ve.  
} UJO+7h'  
} V /|@   
zg]9~i8  
} y2)~ljR  
Hc}(+wQN%  
选择排序: T2k5\r8  
${ e{#  
package org.rut.util.algorithm.support; /Z-|E  
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import org.rut.util.algorithm.SortUtil; gq/q]Fm\  
U<Ag=vsZE  
/** +3VY0J  
* @author treeroot vAX %i(4  
* @since 2006-2-2 o;}o"-s  
* @version 1.0 {whR/rX`  
*/ wqJH  
public class SelectionSort implements SortUtil.Sort { N"T+. r  
4W6gKY  
/* :0r@o:H  
* (non-Javadoc) !s5 _JO  
* Nq-qks.&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /1Ndir^c  
*/ k: D<Q  
public void sort(int[] data) { 0&zp9(G5  
int temp; -K PbA`j+  
for (int i = 0; i < data.length; i++) { ,9=5.+AJ  
int lowIndex = i; wTqgH@rGtR  
for (int j = data.length - 1; j > i; j--) { ~r+;i,,X  
if (data[j] < data[lowIndex]) { A+>+XA'  
lowIndex = j; U",kAQY  
} Ak&eGd$d  
} k]w;(<  
SortUtil.swap(data,i,lowIndex); XNsMXeO]&  
} Ee^2stc-  
} PU[] Nw  
] vQn*T"^  
} 0rooL<~fa  
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Shell排序: *}Vg]3$4  
Iy'a2@   
package org.rut.util.algorithm.support; ^_n(>$ EK  
Nn>Oq+:  
import org.rut.util.algorithm.SortUtil; p{NVJ^! +  
_I+QInD;)  
/** DOyYy~Q  
* @author treeroot d=yuuS /  
* @since 2006-2-2 yO.q{|kX  
* @version 1.0 *7FtEk/l  
*/ TZ3"u@ 06  
public class ShellSort implements SortUtil.Sort{  YH@p\#Y  
Bz!SZpW(M  
/* (non-Javadoc) BRyrdt*_e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V9bn  
*/ D.su^m_1  
public void sort(int[] data) { oP!oU2eqK  
for(int i=data.length/2;i>2;i/=2){ !E#FzY!}Pl  
for(int j=0;j insertSort(data,j,i); E.45 s? r  
} c>mTd{Abi  
} 5LMAy"  
insertSort(data,0,1); ?)X 0l  
} {S,L %  
a'r8J~:jy  
/** #? u#=]  
* @param data K !g!tA$  
* @param j 0w<vc}{t  
* @param i O4t0 VL$  
*/ V q4g#PcG  
private void insertSort(int[] data, int start, int inc) { G LU7?2`t  
int temp; 8Mg wXH  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 21_sg f?  
} 2D;2QdO  
} @|N{E I  
} YMXhzqj  
E?v:7p<  
} 29z$z$l4  
V96:+r  
快速排序: `8M{13fv  
l^!raoH]q  
package org.rut.util.algorithm.support; DXyRNE<G[C  
D6N 32q@  
import org.rut.util.algorithm.SortUtil; e>J.r("f  
ZW>iq M^9  
/** Qv1<)&Ft<  
* @author treeroot 46 [k9T  
* @since 2006-2-2 xaI)d/  
* @version 1.0 T]oVNy  
*/ tK7v&[cI  
public class QuickSort implements SortUtil.Sort{ yVfF *nG  
CT{mzC8  
/* (non-Javadoc) $-AG $1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  9q[ d?1  
*/ d RIuA)0s  
public void sort(int[] data) { y?OK#,j  
quickSort(data,0,data.length-1); T\v~"pMu*0  
} (! a;}V<7  
private void quickSort(int[] data,int i,int j){ $&Lw 2 c0  
int pivotIndex=(i+j)/2; JIatRc?g  
file://swap me@k~!e"z  
SortUtil.swap(data,pivotIndex,j); 1 EL#T&  
pd dumbp  
int k=partition(data,i-1,j,data[j]); %1\~OnT  
SortUtil.swap(data,k,j); pgd9_'[5  
if((k-i)>1) quickSort(data,i,k-1); <H,E1kGw9  
if((j-k)>1) quickSort(data,k+1,j); &[b(Lx|i  
JCjV,  
} |Ml~_m  
/** 6qR5A+|;  
* @param data 'IQ;; [Q  
* @param i _J&IL!S2  
* @param j ^UmhSxQ##  
* @return @Ta0v:Y  
*/ ]kdU]}z  
private int partition(int[] data, int l, int r,int pivot) { B,b^_4XX$  
do{ U+G8Hs/y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1EMrXnv,  
SortUtil.swap(data,l,r); fA)4'7UT  
} TUN6`/"  
while(l SortUtil.swap(data,l,r); D4jZh+_|S  
return l; G?+0#?'Y  
} BD2Gv)?g  
+<Y1`kV)  
} |33_="  
o*5b]XWw  
改进后的快速排序: `3^%ft~l  
Z{^Pnit  
package org.rut.util.algorithm.support; o0kKf+[  
jO.c>C[?  
import org.rut.util.algorithm.SortUtil; m$`4.>J  
$C t(M)  
/** ra F+Bt`  
* @author treeroot th|'t}bWV  
* @since 2006-2-2 =zW`+++3  
* @version 1.0 yRWZ/,9x   
*/ jwp?eL!7  
public class ImprovedQuickSort implements SortUtil.Sort { zP>=K  
k $E{'Dv  
private static int MAX_STACK_SIZE=4096; vhrURY.  
private static int THRESHOLD=10; zB8J|uG  
/* (non-Javadoc) Rhzcm`"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :!w;Y;L:+  
*/ o4H'  
public void sort(int[] data) { H<Zs2DP`  
int[] stack=new int[MAX_STACK_SIZE]; 2OwO|n  
RY}:&vWDk  
int top=-1; ]RuH6d2d|  
int pivot; vMYEP_lhK,  
int pivotIndex,l,r; eC='[W<a.  
V!f' O@p[  
stack[++top]=0; u >.>hQ  
stack[++top]=data.length-1; rT'<6]`  
/h,-J8[  
while(top>0){ @<$_X1)s  
int j=stack[top--]; Y'?{yx{  
int i=stack[top--]; 3J[ 5^  
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pivotIndex=(i+j)/2; =c#;c+a  
pivot=data[pivotIndex]; l8 XY  
\eCQL(_  
SortUtil.swap(data,pivotIndex,j); g7r0U6Y  
)QB9zl:  
file://partition -^,wQW:o)  
l=i-1;  WYW@%t  
r=j; Fv3:J~Yf  
do{ +ooQ-Gh  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i>PKE.  
SortUtil.swap(data,l,r); xL|4'8  
} 8O.5ML{  
while(l SortUtil.swap(data,l,r); #1[Q?e4,0  
SortUtil.swap(data,l,j); (*G'~gSX  
&P(vm@*  
if((l-i)>THRESHOLD){ ^ oh%Ns  
stack[++top]=i; (h27SLYm  
stack[++top]=l-1; k(wJ6pc  
} ~!ICBF~j  
if((j-l)>THRESHOLD){ 9|2LuHQu+  
stack[++top]=l+1; *Edr\P  
stack[++top]=j; K@@Jt  
} vW03nt86  
fVxRK\a\\  
} k6??+b:rE  
file://new InsertSort().sort(data); (^= Hq'D  
insertSort(data); V5]:^=  
} ,CjJO -  
/** !gG\jC~n  
* @param data b* o,re)Dj  
*/ f/e2td*A  
private void insertSort(int[] data) { ?`Som_vKO  
int temp; .iH#8Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !@@rO--&  
} 'q*:+|"  
} AK5$>Pkvk  
} Wg5i#6y8w  
cP[]\r+Kj  
} W'<cAg?  
c$]NXKcA  
归并排序: ot.R Gpg%  
8A|i$#.&  
package org.rut.util.algorithm.support; 21G:!t4/?n  
?mW;%d~]  
import org.rut.util.algorithm.SortUtil; qYR+qSAJP  
Ia>>b #h  
/** :Qklbd[9qF  
* @author treeroot aoS]Qp  
* @since 2006-2-2 o!M*cyq  
* @version 1.0 1@A*Jj[R%  
*/ ~*uxKEH  
public class MergeSort implements SortUtil.Sort{ kC2_&L  
N>_d {=P  
/* (non-Javadoc) rFR2c?j8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sTG e=}T8  
*/ [8C6%n{W  
public void sort(int[] data) { [EV}P&U  
int[] temp=new int[data.length]; !;YQQ<D  
mergeSort(data,temp,0,data.length-1); Zc57]~  
} 'BwM{c-O"  
 LYX\#  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7&9'=G  
int mid=(l+r)/2; r.;(Kx/M  
if(l==r) return ; IWcYa.=tZ  
mergeSort(data,temp,l,mid); me`( J y<  
mergeSort(data,temp,mid+1,r); )SYZ*=ezl.  
for(int i=l;i<=r;i++){ y i/jZX  
temp=data; iXDQ2&gE*  
} 5CuK\<  
int i1=l; /A) v $Bv=  
int i2=mid+1; `?L-{VtM3*  
for(int cur=l;cur<=r;cur++){ v]HiG_C  
if(i1==mid+1) 0yxMIX  
data[cur]=temp[i2++]; $0K%H  
else if(i2>r) D;Jb' Be  
data[cur]=temp[i1++]; ywV8s|o  
else if(temp[i1] data[cur]=temp[i1++]; g$ *V A} s  
else  ]=g |e  
data[cur]=temp[i2++]; W[3)B(Vq<E  
} IK-E{,iKc  
} 6'6@VB  
<WGl4#(k  
} !&Q3>8l  
KCed!OJ+  
改进后的归并排序: \$h LhYz-  
#YSUPO%F  
package org.rut.util.algorithm.support; < &'r_m  
-ijQT B  
import org.rut.util.algorithm.SortUtil; a4}2^K  
b\w88=|  
/** c#e_Fs  
* @author treeroot 5!*5mtI  
* @since 2006-2-2 VQvl,'z  
* @version 1.0 QPfS3%p`  
*/ G K @]61b  
public class ImprovedMergeSort implements SortUtil.Sort { 0ZV)Y<DJ  
Cs %-f"  
private static final int THRESHOLD = 10; ^q,KR ut  
}x1mpPND  
/* #7U,kTj9  
* (non-Javadoc) [hS?d.D   
* ?Ib/}JST  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) puv*p %E  
*/ J7.bFW'  
public void sort(int[] data) { OR^Wd  
int[] temp=new int[data.length]; 0 n,5"B  
mergeSort(data,temp,0,data.length-1); q $`:/ ehw  
} fwRlqfi  
?8(`tS(_?  
private void mergeSort(int[] data, int[] temp, int l, int r) { WL}6YSC  
int i, j, k; tGd<{nF%2  
int mid = (l + r) / 2; Hk\+;'PrN  
if (l == r) @X/S h:  
return; Rhx7eU#&  
if ((mid - l) >= THRESHOLD) !o4xI?  
mergeSort(data, temp, l, mid); xM;gF2  
else h{sW$WA  
insertSort(data, l, mid - l + 1); KX)xCR~  
if ((r - mid) > THRESHOLD) Vrz!.X~  
mergeSort(data, temp, mid + 1, r); );z}T0C  
else =tH+e7it  
insertSort(data, mid + 1, r - mid); A0rdQmrOL  
NI(`o8fN  
for (i = l; i <= mid; i++) { J6 [x(T  
temp = data; Xt= &  
} _u;^w}0  
for (j = 1; j <= r - mid; j++) { Xx|&%b{{r  
temp[r - j + 1] = data[j + mid]; z[v5hhI)4  
} vt mO  
int a = temp[l]; i? AZ|Ha[  
int b = temp[r]; |-_5ou N.  
for (i = l, j = r, k = l; k <= r; k++) { >W'SG3Hmc  
if (a < b) { fsjA7)/  
data[k] = temp[i++]; y=vH8D]%X  
a = temp; YC=BP5^  
} else { ;*W]]4fy  
data[k] = temp[j--]; g@Ni!U"_c  
b = temp[j]; m4Wn$Z  
} YF>t{|  
} .4!N #'  
} fe37T@  
{C]M]b*F6(  
/** D?\K~U* >  
* @param data d;<n [)@  
* @param l FYcMvY  
* @param i N@MeaO  
*/ )1fQhdO}x  
private void insertSort(int[] data, int start, int len) { z}bnw2d]  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z{#F9'\&  
} NxXVW  
} Msd!4TrBJ  
} |}M']Vz  
} q<yH!  
iQ9#gPk_9  
堆排序: {my=Li<_H  
u=E?N:I~F  
package org.rut.util.algorithm.support; Q5,@ P?  
(FjgnsW  
import org.rut.util.algorithm.SortUtil; "]_|c\98  
zi?'3T%Ie  
/** %o"Rcw|  
* @author treeroot 7t04!dD}  
* @since 2006-2-2 6ZG)`u".("  
* @version 1.0 #dpt=  
*/ W;N/Y3Lb  
public class HeapSort implements SortUtil.Sort{ L|q<Bpz  
D} .t  
/* (non-Javadoc) 'o7PIhD"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tJwF h6  
*/ D@^F6am%  
public void sort(int[] data) { Pm1 " 0  
MaxHeap h=new MaxHeap(); /M3D[aR<d  
h.init(data); G wW#Ww;Oc  
for(int i=0;i h.remove(); 9iFe^^<ss  
System.arraycopy(h.queue,1,data,0,data.length);  Nr[Rp  
} k( g$_ ]X  
_"sRL} -Z  
private static class MaxHeap{ JA{YdB;il  
CD&m4^X5D  
void init(int[] data){ Vd?v"2S(9  
this.queue=new int[data.length+1]; /B!m|)h5~  
for(int i=0;i queue[++size]=data; pt4xUu{  
fixUp(size); *cf"l  
} vfv5ex(  
} WD\{Sdx:r  
b}4/4Z.  
private int size=0; Iv<9} )2K  
t<|s &  
private int[] queue; ^J RTi'v  
Yjl0Pz .q  
public int get() { eurudl  
return queue[1]; kW!:bh  
} 4jz]c"p-  
@}?D<O8#"#  
public void remove() { V^{!d}  
SortUtil.swap(queue,1,size--); {6n \532@  
fixDown(1); `e9uSF:9C  
} bvgD;:Aj  
file://fixdown .]e6TFsrO  
private void fixDown(int k) { :7ngVc  
int j; 1ZL_;k  
while ((j = k << 1) <= size) { cLU*Tx\  
if (j < size %26amp;%26amp; queue[j] j++; -$)Et|  
if (queue[k]>queue[j]) file://不用交换 K%}I}8M  
break; {T.Vu]L80  
SortUtil.swap(queue,j,k); D9C}Dys  
k = j; NNE,| :  
} Ozv.;}SE  
} Uu X"AFy~\  
private void fixUp(int k) { e 1loI8  
while (k > 1) { Dq?HUb^X  
int j = k >> 1; )A0&16<  
if (queue[j]>queue[k]) 0w['jh|,  
break; :b ;1P@W<  
SortUtil.swap(queue,j,k); Tqa4~|6  
k = j; u-9t s  
} +2}(]J=-  
} M0zD)@  
(d;(FBk='  
} 8-5 jr_*  
#Q@6:bBzv  
} a1`cI5n  
nh=Us^xD  
SortUtil: <PN;D#2bh  
Ql@yN@V  
package org.rut.util.algorithm; ZY!pw6R1>*  
V3W85_*  
import org.rut.util.algorithm.support.BubbleSort; G r|@CZq  
import org.rut.util.algorithm.support.HeapSort; -NPk N%h  
import org.rut.util.algorithm.support.ImprovedMergeSort; c2\vG  
import org.rut.util.algorithm.support.ImprovedQuickSort; -b)zira  
import org.rut.util.algorithm.support.InsertSort; rgzI  
import org.rut.util.algorithm.support.MergeSort; <M OL{jan  
import org.rut.util.algorithm.support.QuickSort; CDYx/yO  
import org.rut.util.algorithm.support.SelectionSort; W79A4l<  
import org.rut.util.algorithm.support.ShellSort; ;]M67ma7C  
_O;~ }N4u  
/** px>> ]>ZMH  
* @author treeroot JGDUCb~  
* @since 2006-2-2 6J-}&U  
* @version 1.0 'HWgvmw(  
*/ !(_xu{(DL  
public class SortUtil { H8BO*8}  
public final static int INSERT = 1; q7 oR9  
public final static int BUBBLE = 2; .&x?`pER  
public final static int SELECTION = 3; :ZfUjqRE  
public final static int SHELL = 4; '}`hY1v  
public final static int QUICK = 5; pt cLJ]+)  
public final static int IMPROVED_QUICK = 6; !$xEX,vj|W  
public final static int MERGE = 7; K}=8:BaUL  
public final static int IMPROVED_MERGE = 8; y [9}[NMZ  
public final static int HEAP = 9; \Tf{ui  
/N]Ow  
public static void sort(int[] data) { Mr NOcx&  
sort(data, IMPROVED_QUICK); e3={$Ah  
} ls "\YSq$  
private static String[] name={ ?*R^?[  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :iQ^1S` pH  
}; aho<w+l@  
FV6he [,  
private static Sort[] impl=new Sort[]{ txfwLqx  
new InsertSort(), )]b@eGNGj  
new BubbleSort(), `?o1cf A  
new SelectionSort(),  mz VuQ  
new ShellSort(), !+45=d 5  
new QuickSort(), r{!"%03H_  
new ImprovedQuickSort(), _IKP{WNB  
new MergeSort(), 9Oo*8wvGG  
new ImprovedMergeSort(), uCP6;~Ns  
new HeapSort() "p~]m~g  
}; Fma`Cm.  
KpbZnW}g  
public static String toString(int algorithm){ LJNie*  
return name[algorithm-1]; gj egzKU  
} mf]( 3ZL  
@2~O^5[>  
public static void sort(int[] data, int algorithm) { aC8,Y$>?E`  
impl[algorithm-1].sort(data); }M9DqZ;I  
} &^ 3~=$  
[%iUg\'7d  
public static interface Sort { KG-k$glD  
public void sort(int[] data); @Uj _+c q  
} x:n9dm  
zsMw5C  
public static void swap(int[] data, int i, int j) { "'}v0*[  
int temp = data; %hQMC'c  
data = data[j]; vBnKu  
data[j] = temp; SCh7O}  
} IGK_1@tq  
} bDZKQ&  
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