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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。 DpoRR`  
插入排序: O83vPK 3  
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package org.rut.util.algorithm.support; ;HgV(d#X  
(]0ZxWF  
import org.rut.util.algorithm.SortUtil; a&M{y  
/** b_z;^y~  
* @author treeroot sn]8h2z  
* @since 2006-2-2 r,EIOcz:  
* @version 1.0 +}J2\!Jw  
*/ -_4U+Cfmtl  
public class InsertSort implements SortUtil.Sort{ RiIJ#:6+^I  
Yhb=^)@))  
/* (non-Javadoc) 1#&*xF "  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5kofO  
*/ bH~ue5q  
public void sort(int[] data) { .3t[M0sd  
int temp; + 79?}|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r}+U1l3#2  
} &zynfj#o  
} dl6d!Nz*  
} 4M}u_}9  
Q+U}    
} 3;u*_ ]N_  
CVyqr_n65/  
冒泡排序: 1t WKH  
NgaX&m`  
package org.rut.util.algorithm.support; #e((F,1z  
qHt!)j9GKv  
import org.rut.util.algorithm.SortUtil; O\,n;oj  
ik=~`3Zp0  
/** |-bSoq7t  
* @author treeroot :[ F`tDL  
* @since 2006-2-2 IX7<  
* @version 1.0 4/e-E^  
*/ ;3s_#L  
public class BubbleSort implements SortUtil.Sort{ L 5J=+k,  
=cs;avtL  
/* (non-Javadoc) )Fe-C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F0t!k>  
*/ l4I@6@  
public void sort(int[] data) { ZTfs&5  
int temp; D0Oh,Fe#M\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <(TTYf8lS  
if(data[j] SortUtil.swap(data,j,j-1);  (f,D$mX  
} 0Y,_ DU  
} 7?:7}xb-  
} iov55jT~l@  
} rZ/,^[T  
E5w. wx  
} 0(iTnzx0  
,Drd s"H  
选择排序: )cNG)F  
N|EH`eu^i  
package org.rut.util.algorithm.support; g 7res  
qPK3"fzH  
import org.rut.util.algorithm.SortUtil; _%Sorr  
C\Qor3];  
/** AB'q!7NR  
* @author treeroot RLOB  
* @since 2006-2-2 L1D{LzlBti  
* @version 1.0 b*LEoQSl0V  
*/ >:%i,K*AM  
public class SelectionSort implements SortUtil.Sort { &~ QQZ]q6  
s PYG?P(l  
/* R?a)2jl  
* (non-Javadoc) 7afD^H%  
* +|Z1U$0g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GJ edW   
*/ ~'2)E/IeV  
public void sort(int[] data) { :?2+'+%'  
int temp; n8DWA`[ib  
for (int i = 0; i < data.length; i++) { 9JV(}v5[  
int lowIndex = i; ]X?~Cz/wl  
for (int j = data.length - 1; j > i; j--) { ^} P|L  
if (data[j] < data[lowIndex]) { 2s_shY<=}L  
lowIndex = j; dVmI.A'nbp  
} PsU.dv[  
} -g(&5._,ZW  
SortUtil.swap(data,i,lowIndex); 4J Bm|Pf(  
} >Ip>x!wi  
} Qctm"g|  
=|O`al  
} `X'-4/Y  
!Sx }~XB<  
Shell排序: B.vg2N  
:j)H;@[I  
package org.rut.util.algorithm.support; S^? @vj  
?}\aG3_4  
import org.rut.util.algorithm.SortUtil; |q"WJQ  
c+c3C8s*8  
/** -H5n>j0!{  
* @author treeroot Wu(6FQ`H  
* @since 2006-2-2 -&I%=0q  
* @version 1.0 w-*$gk]   
*/ ^UHt1[  
public class ShellSort implements SortUtil.Sort{ *9 M 5'  
'L4@|c~x  
/* (non-Javadoc) 9`yG[OA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i,=greA]"  
*/ xa#0y   
public void sort(int[] data) { ^=D=fX"8%  
for(int i=data.length/2;i>2;i/=2){ L\|p8jJ  
for(int j=0;j insertSort(data,j,i); xq+$Q:f  
} Sr Z\]  
} iK8aj)%Q@  
insertSort(data,0,1); `VX]vumG  
} 2j&-3W$^  
h$.y)v  
/** KSU?Tg&JR  
* @param data 6*9hAnH  
* @param j % \p:S)R  
* @param i ]CsF} wr'z  
*/ Z? u\  
private void insertSort(int[] data, int start, int inc) { ?3~]H   
int temp; S^'?s fq  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9r=@S  
} ,6:ya8vB  
} j3jf:7 /\  
} 2V %si6  
${Cb1|g>j  
} `p1szZD&  
Se/VOzzg  
快速排序: U\'.rT[#  
NKf][!bi  
package org.rut.util.algorithm.support; ieXhOA  
~Fp,nE-B  
import org.rut.util.algorithm.SortUtil; &^$dHr6v  
Q/&H3N  
/** n:d]Z2b  
* @author treeroot  w=5D>]  
* @since 2006-2-2 W<C \g~\  
* @version 1.0 rKEi1b  
*/ T^.;yU_B?  
public class QuickSort implements SortUtil.Sort{ "Opk:;.  
l6Wa~E  
/* (non-Javadoc) nTxeV%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TD:NL4dm  
*/ -3`S;Dmn  
public void sort(int[] data) { 'lNy&  
quickSort(data,0,data.length-1); ^*(*tS|M  
} YCZl1ry:V=  
private void quickSort(int[] data,int i,int j){ (PAkKY}  
int pivotIndex=(i+j)/2; 2>BWu  
file://swap $/^DY&  
SortUtil.swap(data,pivotIndex,j); )cOw9&#s  
/.{4 KW5  
int k=partition(data,i-1,j,data[j]); sUA==k  
SortUtil.swap(data,k,j); u:#+R_0#97  
if((k-i)>1) quickSort(data,i,k-1); "`]G>,r_  
if((j-k)>1) quickSort(data,k+1,j); e aLSq  
vW,dJ[N6jm  
} :L gFd  
/** MTJ ."e<B  
* @param data MzZYzz  
* @param i iq'hel  
* @param j T\7z87Q  
* @return 2z9\p%MX  
*/ l_bvwo  
private int partition(int[] data, int l, int r,int pivot) { v5 STe`  
do{ Fm}#KE0  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C "XvspJ  
SortUtil.swap(data,l,r); ?m.WqNBH7  
} OUCL tn\  
while(l SortUtil.swap(data,l,r); zUX%$N+w}>  
return l; 'z$BgXh\  
} &)`xlIw}  
4qMqA T  
} '&/ 35d9|*  
d%1Tv1={  
改进后的快速排序: 9))E\U  
xs+pCK|  
package org.rut.util.algorithm.support; _'pow&w~  
AX6z4G  
import org.rut.util.algorithm.SortUtil; $HVus=D"  
\Tq !(]o^  
/** 69#mj*p@+  
* @author treeroot hx|Cam"  
* @since 2006-2-2 V1 y"  
* @version 1.0 :`('lrq  
*/ v4M1uJ8  
public class ImprovedQuickSort implements SortUtil.Sort { =!}n .  
hM}rf6B  
private static int MAX_STACK_SIZE=4096; 'Cw&9cL9w  
private static int THRESHOLD=10; i-1lppI  
/* (non-Javadoc) Ky"]L~8$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zTA+s 2  
*/ Gk~QgD/Pix  
public void sort(int[] data) { @JJ,$ ?  
int[] stack=new int[MAX_STACK_SIZE]; "^sh:{  
Py^ _::  
int top=-1; j7LuN  
int pivot; ;. jnRPo";  
int pivotIndex,l,r; Xvy3D@o  
X|o;*J](  
stack[++top]=0; <ezv  
stack[++top]=data.length-1; P#e1?  
\#1*r'V8  
while(top>0){ b*C\0D  
int j=stack[top--]; Qs v3`c  
int i=stack[top--]; ,'=Tf=wq  
61qs`N=k  
pivotIndex=(i+j)/2; <*D{uMw  
pivot=data[pivotIndex]; TVaD',5_V%  
I~:vX^%9  
SortUtil.swap(data,pivotIndex,j); eN*=wOh  
3O{*~D&n  
file://partition eK<X7m^  
l=i-1; a4'KiA2r  
r=j; SZ/}2_;  
do{ $bf&ct*$h  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =+I~K'2  
SortUtil.swap(data,l,r); <d2?A}<  
} T6T3:DG_B  
while(l SortUtil.swap(data,l,r); . X  (^E  
SortUtil.swap(data,l,j); "Jd!TLt\x  
WCa>~dF>  
if((l-i)>THRESHOLD){ $f++n5I  
stack[++top]=i; +sN'Y/-  
stack[++top]=l-1; qG=?+em  
} h$F.(NIYe  
if((j-l)>THRESHOLD){ 1|]IWX|  
stack[++top]=l+1; r>!$eqX_  
stack[++top]=j; G~$.Af!9W  
} H C %tJ:G  
D'{NEk@  
} Z%h _g-C  
file://new InsertSort().sort(data); 'VgdQp$L$  
insertSort(data); ,r=9$i_  
} &sFEe<  
/** 4*j6~  
* @param data O)0}yF$0  
*/ }6Ut7J]a|  
private void insertSort(int[] data) { Qs38VlR_m  
int temp; bc+~g>o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @W4tnM,#  
} Ry$zF~[   
} 7WEh'(`  
} 7H$I9e  
+ ESEAi91  
} *3uBS2Ld  
Y/%(4q*'  
归并排序: .Yw  
#8Bs15aV  
package org.rut.util.algorithm.support; >MTrq%.  
)bd)noZi  
import org.rut.util.algorithm.SortUtil; J?oI%r7^  
e_<'zH_1  
/** \ oY/hT_  
* @author treeroot $ \yZ;Z:  
* @since 2006-2-2 uwL^Tq}Yh  
* @version 1.0 }?\8%hK"a7  
*/ %>z4hH,  
public class MergeSort implements SortUtil.Sort{ Io(*_3V)B  
J]!&E~Y  
/* (non-Javadoc) EZ"n3#/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9wTN *y  
*/ NsPAWI|4  
public void sort(int[] data) { f:\)oIW9Kk  
int[] temp=new int[data.length]; <:n !qQS6  
mergeSort(data,temp,0,data.length-1); N4[`pXM6  
} *(,zPn,  
vcmB)P-T`O  
private void mergeSort(int[] data,int[] temp,int l,int r){ yd}1Mx  
int mid=(l+r)/2; ?rJe"TOIy  
if(l==r) return ; 8 t)?$j$  
mergeSort(data,temp,l,mid); @TQzF-%#7  
mergeSort(data,temp,mid+1,r); o]@Mg5(8Q  
for(int i=l;i<=r;i++){ Q)IL]S  
temp=data; s3/iG37K  
} nF)b4`Nd  
int i1=l; f@j)t%mh  
int i2=mid+1; f`gs/R  
for(int cur=l;cur<=r;cur++){ qk{+Y  
if(i1==mid+1) @W1F4HYds  
data[cur]=temp[i2++]; 2Y7u M;8  
else if(i2>r) N|rB~  
data[cur]=temp[i1++]; baO'FyCs9&  
else if(temp[i1] data[cur]=temp[i1++]; 9cnLf#  
else yrF"`/zv6|  
data[cur]=temp[i2++]; SSAf<44e  
} hr/H vB  
} 0| }]=XN^  
"c5bz  
} 61@;3yV  
W=S<DtG2  
改进后的归并排序: ${F4x"x  
zR!p-7_w  
package org.rut.util.algorithm.support; q`0wG3  
F1q6 3  
import org.rut.util.algorithm.SortUtil; tkX?iqKQ  
obz|*1M?  
/** ubQbEv{(,  
* @author treeroot WAUgbImc{  
* @since 2006-2-2 l+UUv]:1  
* @version 1.0 $<s;YhM:u)  
*/ k9_c<TSzu  
public class ImprovedMergeSort implements SortUtil.Sort { ~-tKMc).X  
lDX\"Fq  
private static final int THRESHOLD = 10; +B&,$ceyaJ  
SjL&\),  
/* ?/1Eu47  
* (non-Javadoc) K(3_1*e  
* )j+G4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X-<l+WP  
*/ JC.nfxG@:  
public void sort(int[] data) { .Cz9?]jyI  
int[] temp=new int[data.length]; _+6aD|7x  
mergeSort(data,temp,0,data.length-1); Js'j}w  
} \0fk^  
*A ([1l&]i  
private void mergeSort(int[] data, int[] temp, int l, int r) { =v{Vl5&>?  
int i, j, k; ;i,3KJ[L  
int mid = (l + r) / 2; O%)Wo?)HM  
if (l == r) ["1Iz{  
return; };;k5z I%  
if ((mid - l) >= THRESHOLD) ms{iQ:'9  
mergeSort(data, temp, l, mid); _]t^F9l  
else wZ%a:Z4TcM  
insertSort(data, l, mid - l + 1); d` X1cG  
if ((r - mid) > THRESHOLD) !dV2:`|+  
mergeSort(data, temp, mid + 1, r); @#2KmM~I  
else 60#eTo?}o  
insertSort(data, mid + 1, r - mid); >pm`(zLn  
E0)43  
for (i = l; i <= mid; i++) { D$U`u[qjtS  
temp = data; Pk{%2\%&2  
} d#CAP9n;'  
for (j = 1; j <= r - mid; j++) { &e \UlM22  
temp[r - j + 1] = data[j + mid]; X.GK5Phd  
} uZml.#@4  
int a = temp[l]; phi9/tO\u  
int b = temp[r]; FaLc*CU  
for (i = l, j = r, k = l; k <= r; k++) { s4[PwD  
if (a < b) { A&S n^mw  
data[k] = temp[i++]; yi;pn Z  
a = temp; *6aIDFNl  
} else { \P;2s<6i\  
data[k] = temp[j--]; jdX *  
b = temp[j]; )?;+<,  
} V [Wo9Y\  
} a7}O.NDf  
} yHf:/8Z  
~0Z.,p_  
/** KA? J:  
* @param data F EA t6  
* @param l }u]7x:lh  
* @param i KP&$Sl  
*/ =`ECM7  
private void insertSort(int[] data, int start, int len) { |@BX*r  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {u[_^  
} PJL [En*  
} D@)L?AB1f  
} 57Bxx__S4`  
} JqV}>"WMV  
im@QJ :  
堆排序: 97k}{tG  
7hhv/9L1  
package org.rut.util.algorithm.support; 8?LHYdJ  
@xeJ$ rlu  
import org.rut.util.algorithm.SortUtil; )I"I[jDw  
PYiO l  
/** %.WW-S3  
* @author treeroot 6xLQ  
* @since 2006-2-2 wpg7xx!  
* @version 1.0 Ot{~mMDp  
*/ 5><T#0W?  
public class HeapSort implements SortUtil.Sort{ f0{j/+F_o  
xri(j,mU  
/* (non-Javadoc) k\X yR4r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8RT<?I^5  
*/ @=6oB3tQA  
public void sort(int[] data) { U%n>(!d  
MaxHeap h=new MaxHeap(); l:~/%=  
h.init(data); jAdZS\?w  
for(int i=0;i h.remove(); 9t!Agxm  
System.arraycopy(h.queue,1,data,0,data.length); 7/K L<T9@  
} X0knM}5  
LKBh{X0%(  
private static class MaxHeap{ q[(1zG%NbA  
05Q4$P  
void init(int[] data){ biPj(Dd  
this.queue=new int[data.length+1]; +DaKP)H\:  
for(int i=0;i queue[++size]=data; ^<3{0g-"AW  
fixUp(size); 2B"tT"f  
} *j<{3$6Ii  
} mFmxEv  
tL M@o|:  
private int size=0; Fl!D2jnN  
mD%IHzbn H  
private int[] queue; (}rBnD  
iB5q"hoZC  
public int get() {  F*_+k  
return queue[1]; ]xGpN ]u  
} n#sK31;yb  
?2q0[T?e  
public void remove() {  kGAB'  
SortUtil.swap(queue,1,size--); BO2s(8  
fixDown(1); rX0 ?m:&m  
} M+I9k;N6&  
file://fixdown _WZ{i,  
private void fixDown(int k) { y>cLG5v  
int j; 'e_e*.z3  
while ((j = k << 1) <= size) { tt|P-p-  
if (j < size %26amp;%26amp; queue[j] j++; ~14|y|\/  
if (queue[k]>queue[j]) file://不用交换 4"UH~A;^  
break; cl`7|;v|?  
SortUtil.swap(queue,j,k); { <1uV']x  
k = j; G#ELQ/Q  
} HL-'\wtl  
} nd$92H  
private void fixUp(int k) { SLNq%7apx  
while (k > 1) { jz S iw z  
int j = k >> 1; putRc??o;  
if (queue[j]>queue[k]) mDk6@Gd@U  
break; ]^8CtgC  
SortUtil.swap(queue,j,k); ]$#9B-uB  
k = j; 6&QOC9JW+7  
} BLAF{vVaf  
} W>qu~ak?x  
XMz*}B6GQ  
} NwdrJw9  
X(BX+)YR  
} t/_\w"  
'h^Ya?g  
SortUtil: R"l6|9tmP  
Yf/e(nV  
package org.rut.util.algorithm; p]<)6sZ  
,N;2"$+E  
import org.rut.util.algorithm.support.BubbleSort; @eDs)mY  
import org.rut.util.algorithm.support.HeapSort; 6(x53 y__  
import org.rut.util.algorithm.support.ImprovedMergeSort; ]O{i?tyX  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^vTx%F  
import org.rut.util.algorithm.support.InsertSort; `%^w-'  
import org.rut.util.algorithm.support.MergeSort; &['L7  
import org.rut.util.algorithm.support.QuickSort; OjNOvh&N  
import org.rut.util.algorithm.support.SelectionSort; ;nJ2i?"  
import org.rut.util.algorithm.support.ShellSort; oRJ!TAbD  
D?UURURf  
/** <6s@eare8  
* @author treeroot ExN $J  
* @since 2006-2-2 +>%51#2.Q  
* @version 1.0 ! 2knS S  
*/ +'+ Nr<  
public class SortUtil { _n!>*A!  
public final static int INSERT = 1; Kv9FqrDj  
public final static int BUBBLE = 2; kM[!UOnC!<  
public final static int SELECTION = 3; )q.ZzijG/  
public final static int SHELL = 4; 8 R7w$3pp\  
public final static int QUICK = 5; '9zKaL  
public final static int IMPROVED_QUICK = 6; Q`NdsS2  
public final static int MERGE = 7; Ju&FwY+  
public final static int IMPROVED_MERGE = 8; zGNW5S9G  
public final static int HEAP = 9; E:k]Z  
9+$IulOvk  
public static void sort(int[] data) { %W$b2N{l  
sort(data, IMPROVED_QUICK); %#PWD7a\  
} >,tJq %  
private static String[] name={ sa _J6~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" tIV{uVM[|D  
}; YJ-<t6  
-ah)/5j  
private static Sort[] impl=new Sort[]{ n%G[Y^^,  
new InsertSort(), Hz[1c4)'F  
new BubbleSort(), Q`6hJgyL  
new SelectionSort(), &j ; 91wEn  
new ShellSort(), &<_q00F  
new QuickSort(), Qds:*]vGS  
new ImprovedQuickSort(), n qx0#_K-E  
new MergeSort(), tCoE4Ed  
new ImprovedMergeSort(), Nn-k hl|11  
new HeapSort() dtTfV.y4w  
}; .qKfhHJ  
{Rb;1 eYj  
public static String toString(int algorithm){ It/hXND `  
return name[algorithm-1]; xLLTp7b(  
} K7.ayM 0  
Gc*=n*@^K  
public static void sort(int[] data, int algorithm) { a&2x;diF  
impl[algorithm-1].sort(data); iOCs% J  
} #@5VT* /7  
D| <_96_m  
public static interface Sort { SK&1l`3  
public void sort(int[] data); y29G#Y4J  
} "#gS?aS  
0_-o]BY  
public static void swap(int[] data, int i, int j) { k%\y,b*  
int temp = data; n%RaEL  
data = data[j]; X2;72  
data[j] = temp; K>LS8,8V  
} :;hX$Qz  
} 6[RTL2&W  
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