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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。 g~2=he\C  
插入排序:  ^Kl*}  
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package org.rut.util.algorithm.support; }; R2M  
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import org.rut.util.algorithm.SortUtil; [ahwJF#r  
/** K_n GZ/`[  
* @author treeroot  9I:3  
* @since 2006-2-2 3mHP=)  
* @version 1.0 G?,"AA;  
*/ !*3]PZ25a(  
public class InsertSort implements SortUtil.Sort{ H|$ *HQm  
XSCcumde!  
/* (non-Javadoc) @ M4m!;rM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M~h.M PI  
*/ A)gSOC{3F)  
public void sort(int[] data) { /'zXb_R,$  
int temp; "sIww  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wwet90_g  
} gi>W&6  
} xLb=^Xjec  
} (5A8#7a  
M?=I{}!@Q  
} Fn0 |v66  
6b%IPbb  
冒泡排序: ArjRoXDE  
OnU-FX<  
package org.rut.util.algorithm.support; 'BUfdb8d  
&'`ki0Xh;  
import org.rut.util.algorithm.SortUtil; NHQoP&OG  
WFzM s  
/** q{%~(A5*H  
* @author treeroot 5i}g$yjZ<  
* @since 2006-2-2 As5-@l`@  
* @version 1.0 E#3tkFF0Z[  
*/ ESk:$`P  
public class BubbleSort implements SortUtil.Sort{ 0>46ZzxUZ  
b@Dt]6_ UL  
/* (non-Javadoc) cml~Oepf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k'*vG6!  
*/ c[V.j+Iy#^  
public void sort(int[] data) { DAg*  
int temp; orYZ<,u  
for(int i=0;i for(int j=data.length-1;j>i;j--){ U<r!G;^`  
if(data[j] SortUtil.swap(data,j,j-1); =.OzpV)=V  
} K}M lC}oIt  
} XH(-anU"!P  
} Y DW^N] G  
} )#GF:.B  
?bu=QV@  
} p5py3k  
)*R';/zaI  
选择排序: M IyT9",Pl  
,6#%+u}f  
package org.rut.util.algorithm.support; WJ)4rQ$o  
.LDp.#d9r1  
import org.rut.util.algorithm.SortUtil; LitdO>%#2  
k ]T  
/** .XkD2~;  
* @author treeroot %pH|2VB#  
* @since 2006-2-2 O,-NzGs  
* @version 1.0 p] N/]2rR  
*/ @h_ bXo  
public class SelectionSort implements SortUtil.Sort { ,`OQAJ)>  
0rQ r#0`  
/* KX3A|  
* (non-Javadoc) l@1=./L?  
* @y'ZM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4\nG Wi{2  
*/ `8tstWYa]Y  
public void sort(int[] data) { y<wd~!>Ubu  
int temp; I<XYLe[_S  
for (int i = 0; i < data.length; i++) { I-1NZgv  
int lowIndex = i; *z#du*f[  
for (int j = data.length - 1; j > i; j--) { xG(iSuz  
if (data[j] < data[lowIndex]) { UCkV ;//.  
lowIndex = j; \{!,a  
} KK5_;<  
} y"ss<`Cn  
SortUtil.swap(data,i,lowIndex); 3Ijs V5a  
} G,c2?^#n  
} >4-9 @i0FV  
*0eV9!y  
} : 2$*'{mM  
9[W >`JKo  
Shell排序: e ky1}  
g HkHAOe/  
package org.rut.util.algorithm.support; &r*F+gL  
()w;~$J  
import org.rut.util.algorithm.SortUtil; `S5::U6E  
'\+"3!$  
/** 4eG\>#5  
* @author treeroot LXsZk|IhM  
* @since 2006-2-2 TI<3>R  
* @version 1.0 n)Cr<^j  
*/ 7-Oa34ba+  
public class ShellSort implements SortUtil.Sort{ ^ERdf2  
}%jpqip  
/* (non-Javadoc) 1X`,7B@pz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =kzp$ i  
*/ >M!LC  
public void sort(int[] data) { Jw&Fox7p  
for(int i=data.length/2;i>2;i/=2){ lhnGk'@d  
for(int j=0;j insertSort(data,j,i); bBXLW}W  
} `W" ;4A  
} O9o]4;  
insertSort(data,0,1); S0gxVd(  
} h^qZi@L  
%W2U$I5  
/** f [.'V1  
* @param data RLL%l  
* @param j A%7f;&x!  
* @param i LH=^3Gw  
*/ diVg|Z3T  
private void insertSort(int[] data, int start, int inc) { ?Yf v^DQ5  
int temp; 1E'PSq  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;UUgqX#  
} $$W2{vr7+  
} PB.'huu  
} fH?A.JP=a  
~K;hXf  
} -:"KFc8A  
EY3F9h3xM|  
快速排序: osd oL  
CY{!BV'  
package org.rut.util.algorithm.support; 8O(L;&h  
*h=>*t?I2  
import org.rut.util.algorithm.SortUtil; q86}'dFw{  
vD:J!|hs(  
/** : ir3u  
* @author treeroot YTmHht{j#  
* @since 2006-2-2 )8eb(!}7  
* @version 1.0 @Tq-3Um  
*/ K/*"U*9Kv  
public class QuickSort implements SortUtil.Sort{ GvgTbCxnN  
,b IJW]h0  
/* (non-Javadoc) 3A[<LnKR^E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N{&Lo}6F  
*/ x4g/ok  
public void sort(int[] data) { Ovj^ 7r:<s  
quickSort(data,0,data.length-1); X%&7-PO  
} S w%6-  
private void quickSort(int[] data,int i,int j){ V=th-o3[  
int pivotIndex=(i+j)/2; FE^/us7r  
file://swap GG<0k\RN  
SortUtil.swap(data,pivotIndex,j); >;Vfs{Z(q  
&7>]# *  
int k=partition(data,i-1,j,data[j]); *| W*Mu  
SortUtil.swap(data,k,j); G!=(^G@J;  
if((k-i)>1) quickSort(data,i,k-1); s3yGL  
if((j-k)>1) quickSort(data,k+1,j);  qsXkm4  
<_Z.fdUA  
} ={ -kQq  
/** -sZ'<(3  
* @param data Fw{#4  
* @param i p~=z)7% e'  
* @param j ov H'_'  
* @return 7CSz  
*/ :@"o.8p   
private int partition(int[] data, int l, int r,int pivot) { }$L1A   
do{ Q _!tn*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y<(7u`F  
SortUtil.swap(data,l,r); }7b{ZbDI  
} ]B3+& g  
while(l SortUtil.swap(data,l,r); 2yZ~j_AF[  
return l; m ie~. "  
} XTk :lzFH  
|2n*Ds'  
} im9EV|;  
pU<J?cU8N  
改进后的快速排序: bc~$"  
9&Un|cr  
package org.rut.util.algorithm.support; T+zhj++  
TbT/ 5W3  
import org.rut.util.algorithm.SortUtil; 8-7Ml3G*  
EW vhT]<0  
/** +HRtuRv0T  
* @author treeroot =q)+_@24>d  
* @since 2006-2-2 UR=s=G|  
* @version 1.0 ?wv3HN  
*/ Vn:v{-i  
public class ImprovedQuickSort implements SortUtil.Sort { WQ.{Ag?1  
);i J9+ V}  
private static int MAX_STACK_SIZE=4096; 8IWT;%  
private static int THRESHOLD=10; ]3,  
/* (non-Javadoc) DO-M0L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?E V^H-rr  
*/ Lb<IEy77\  
public void sort(int[] data) { x|Pz24yP9  
int[] stack=new int[MAX_STACK_SIZE]; jPZ+~:m+  
n7~4*B  
int top=-1; B[EOz\?=m  
int pivot; 4g2`[<S  
int pivotIndex,l,r; Rx"+i0  
$6J22m!S4n  
stack[++top]=0; lxgfi@@+h  
stack[++top]=data.length-1; ~MC 5rOA  
`8O Bw  
while(top>0){ [A {o"zY  
int j=stack[top--]; s5+;8u9K  
int i=stack[top--]; oQV3  
KU{zzn;g  
pivotIndex=(i+j)/2; sb3z8:r  
pivot=data[pivotIndex]; `MCtm(<  
zDtC]y'  
SortUtil.swap(data,pivotIndex,j); >R6mI  
l<4P">M!.  
file://partition N}NKQ]=  
l=i-1; a?GXVQ  
r=j; &Z!y>k%6  
do{ yih|6sd$F  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2Og5e  
SortUtil.swap(data,l,r); ,xrA2  
} cT@| $A  
while(l SortUtil.swap(data,l,r); L>E;cDB  
SortUtil.swap(data,l,j); \?Z7|   
1pG|jT+Bi  
if((l-i)>THRESHOLD){ v?6*n >R  
stack[++top]=i; KaOXqFT=  
stack[++top]=l-1; }Rh%bf7,  
} 'U ZzH$h  
if((j-l)>THRESHOLD){ vL[IVBG^  
stack[++top]=l+1; R2{]R&wtn0  
stack[++top]=j; Uf7ACv)Dn  
} "fhQ{b$i  
M=95E$6  
} O`%F{&;29  
file://new InsertSort().sort(data); -bdWG]w"  
insertSort(data); m;rr7{7X  
} 8tv4_Lbx  
/** C@]D*k  
* @param data X 5}=|%Y  
*/ uqI'e_&=&5  
private void insertSort(int[] data) { 6bjZW ~  
int temp; <& +jl($"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -~xQ@+./  
} #6YpV)  
} Hf1b&8&:K  
} f_LXp$n  
n/*" 2  
} qa@;S,lp  
SDSP4W5  
归并排序: tq~f9EvC  
GhcH"D%-  
package org.rut.util.algorithm.support; PZ'|)  
Wtk|}>Pf  
import org.rut.util.algorithm.SortUtil; *HHL a  
[:(O`#  
/** K re*~ "  
* @author treeroot eFf9T@  
* @since 2006-2-2 SEg{Gso9b  
* @version 1.0 we!w5./Xm  
*/ T]1.":   
public class MergeSort implements SortUtil.Sort{ )=#Js<&3:  
xZ%3e sp  
/* (non-Javadoc) K8-1?-W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R1Q,m  
*/ U,T#{  
public void sort(int[] data) { iR{@~JN=)  
int[] temp=new int[data.length]; 4G;KT~Cgb  
mergeSort(data,temp,0,data.length-1); |T"j7  
} +/[Rvh5WZ  
ZrNH:Z:5  
private void mergeSort(int[] data,int[] temp,int l,int r){ 3Rsrb  
int mid=(l+r)/2; \r{wNqyv  
if(l==r) return ; ThW9=kzQW  
mergeSort(data,temp,l,mid); mAW(j@5sp  
mergeSort(data,temp,mid+1,r); lf KV%  
for(int i=l;i<=r;i++){ XVfUr\=,T  
temp=data; 9 ;uw3vI%  
} qRcg|']R  
int i1=l; *&]8rm{  
int i2=mid+1; IDqUiN  
for(int cur=l;cur<=r;cur++){ vR5X  
if(i1==mid+1) 1|>vk+;1h  
data[cur]=temp[i2++]; N M),2%<  
else if(i2>r) hSAI G  
data[cur]=temp[i1++]; :@E^oNKa0  
else if(temp[i1] data[cur]=temp[i1++]; hR2 R  
else cw)J+Lyh  
data[cur]=temp[i2++]; aL;zN%Tw  
} 2sG1Hox  
} ,aP5)ZN-  
U Rq9:{  
} fU%Ys9:wU  
};"_Ku4#-  
改进后的归并排序: . 8ikcs  
^!k_"C)B  
package org.rut.util.algorithm.support; %RF$Y=c'C  
wouk~>Jft  
import org.rut.util.algorithm.SortUtil; n!X%i+|4x  
sRcS-Yw[S  
/** B>d49(jy  
* @author treeroot yHs9J1S f  
* @since 2006-2-2 ]{{%d4  
* @version 1.0 .}+3A~  
*/ MZA%ET,l,<  
public class ImprovedMergeSort implements SortUtil.Sort { BonjK#  
=F/R*5:T  
private static final int THRESHOLD = 10; H>]*<2(=-  
x N>\t& c  
/* ?;5/"/i  
* (non-Javadoc) Nknd8>Hy+  
* ;O,&MR{;|n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =)i^E9  
*/ |FlB#  
public void sort(int[] data) { RhF< {U.  
int[] temp=new int[data.length]; mKV31wvK}  
mergeSort(data,temp,0,data.length-1); YbWz!.WPe  
} F &5iA\  
l9+CJAmq  
private void mergeSort(int[] data, int[] temp, int l, int r) {  >}]bKq  
int i, j, k; .v+J@Y a  
int mid = (l + r) / 2; aWLA6A+C&  
if (l == r) (8o;Cm  
return; .9g :-hv  
if ((mid - l) >= THRESHOLD) tx+P@9M_Aq  
mergeSort(data, temp, l, mid); S}0-2T[  
else &A/b9GW^-  
insertSort(data, l, mid - l + 1); 7OXRR)]V  
if ((r - mid) > THRESHOLD) =*+f2  
mergeSort(data, temp, mid + 1, r); Iw#[K  
else <bhJ>  
insertSort(data, mid + 1, r - mid); >nK (  
&n83>Q  
for (i = l; i <= mid; i++) { RCK*?\m5  
temp = data; Y}yh6r;i  
} 3w[uc~f  
for (j = 1; j <= r - mid; j++) { |@R/JGB^  
temp[r - j + 1] = data[j + mid]; &lzCRRnvt  
} tN.BI1nB  
int a = temp[l]; ,5t_}d|3C=  
int b = temp[r]; @ZV>Cl@%2  
for (i = l, j = r, k = l; k <= r; k++) { -\ew,y  
if (a < b) { Qch'C0u  
data[k] = temp[i++]; m)6-D-&7  
a = temp; 0CX9tr2J  
} else { r"x}=# b!  
data[k] = temp[j--]; `\3RFr  
b = temp[j]; PT&qys 2k  
} 0s}gg[lj  
} !>K=@9NC|.  
} Dp} $q`F[  
~\u>jel  
/** Z~|%asjFE  
* @param data ~WB-WI\  
* @param l #q&N d2y  
* @param i k#mL4$]V5N  
*/ 56NDU>j$  
private void insertSort(int[] data, int start, int len) { 7s:cg  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2AxKB+c1`  
} a~-k} G5  
} %^"i\- *|S  
} 4m~p(r  
} kqC7^x  
S|yDGT1  
堆排序: dOg c%(kz  
mwz!7Q   
package org.rut.util.algorithm.support; H6 $pA^  
EF 8rh  
import org.rut.util.algorithm.SortUtil; w5Ucj*A\  
d1*0?GTT  
/** 4}YHg&@\d%  
* @author treeroot < r b5'  
* @since 2006-2-2 LR"7e  
* @version 1.0 "oR%0pU*  
*/ }1sd<<\`  
public class HeapSort implements SortUtil.Sort{ $O\]cQD`u  
N#:W#C{16w  
/* (non-Javadoc) Wp^ |=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) poi39B/Vt  
*/ Ipow Jw^  
public void sort(int[] data) { hrfSe$8  
MaxHeap h=new MaxHeap(); &&96kg3  
h.init(data); a'my0m  
for(int i=0;i h.remove(); Q b5vyV `  
System.arraycopy(h.queue,1,data,0,data.length); $KGRpI  
} #_Lgo  
"(\]-%:7  
private static class MaxHeap{ x.(Sv]+[  
zj1_#=]  
void init(int[] data){ ( M3-S5   
this.queue=new int[data.length+1]; 5* ~E dT  
for(int i=0;i queue[++size]=data; 0{Zwg0&  
fixUp(size); = o1&.v2j  
} VK}H;  
} : +fW#:  
u H)v\Js  
private int size=0; Nb>C5TjR  
hN;$'%^  
private int[] queue; a)/ }T  
>- CNHb  
public int get() { +/#Lm#*nu%  
return queue[1]; $1D>}5Ex  
} ;|Rrtf9  
?SoRi</1  
public void remove() { hBW,J$B  
SortUtil.swap(queue,1,size--); p;2NO&  
fixDown(1); emS7q|^  
} %#lJn.o  
file://fixdown P"+K'B7K3  
private void fixDown(int k) { S%Z2J)H"  
int j; z }P1+Pm  
while ((j = k << 1) <= size) { `u;4Z2Lr0  
if (j < size %26amp;%26amp; queue[j] j++; dJmr!bN\;  
if (queue[k]>queue[j]) file://不用交换 gBXbB9  
break; Gii1|pLZ1  
SortUtil.swap(queue,j,k); x.U:v20`  
k = j; E. Arq6  
} ?)/&tk9.n  
} \ 3l3,VYH  
private void fixUp(int k) { <\\,L@  
while (k > 1) { .W0;Vhw"  
int j = k >> 1; *U|2u+| F  
if (queue[j]>queue[k]) <%LN3T  
break; I h 19&D  
SortUtil.swap(queue,j,k); t^<ki?*  
k = j; Q\Nz^~dQ:Y  
} >xm:?WR  
} Eg]tDPN1  
#)<WQZ)  
} Z%Yq{tAt  
zCpXF< _C  
} 53?B.\  
Z<[f81hE&  
SortUtil: $4rMYEn08  
/m*+N9)  
package org.rut.util.algorithm; Z E},x U%  
Q-$EBNz  
import org.rut.util.algorithm.support.BubbleSort; f`,isy[  
import org.rut.util.algorithm.support.HeapSort; FZJ sZeO  
import org.rut.util.algorithm.support.ImprovedMergeSort; "]1|%j  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2c8e:Xgv  
import org.rut.util.algorithm.support.InsertSort; .h>tef  
import org.rut.util.algorithm.support.MergeSort; 7?~*F7F  
import org.rut.util.algorithm.support.QuickSort; 4-\gha  
import org.rut.util.algorithm.support.SelectionSort; vsCy?  
import org.rut.util.algorithm.support.ShellSort; &UoQ8&  
L]Dl}z  
/** 7T9Mo .  
* @author treeroot  *4{GI D  
* @since 2006-2-2 $pYT#_P!/  
* @version 1.0 )?,X\/5  
*/ Hd0?}w\  
public class SortUtil { A>Oi9%OY:  
public final static int INSERT = 1; )R9QJSe  
public final static int BUBBLE = 2; rtgu{m02  
public final static int SELECTION = 3; /-&a]PJ  
public final static int SHELL = 4; uSn<]OrZo`  
public final static int QUICK = 5; dfA4OZ&  
public final static int IMPROVED_QUICK = 6; K6; sxF  
public final static int MERGE = 7; ; Uf]-uS  
public final static int IMPROVED_MERGE = 8; G' a{;3  
public final static int HEAP = 9; <+${gu?^  
@m(ja@YC  
public static void sort(int[] data) { ;kiL`K  
sort(data, IMPROVED_QUICK); 5o R/Q|^  
} hS7o=G[  
private static String[] name={ -PH!U Hg  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" i slg5  
}; {qjw  S1v  
94xRKQ}  
private static Sort[] impl=new Sort[]{ b'5L|1d  
new InsertSort(), "yc_*R(pU  
new BubbleSort(), ^bDh[O  
new SelectionSort(), m%G:|`f7  
new ShellSort(), *we*IhIP  
new QuickSort(), YU24wTe;k  
new ImprovedQuickSort(), -H(\[{3{V  
new MergeSort(), K#<cuHGC  
new ImprovedMergeSort(), Ju 0  
new HeapSort() lQnqPQY  
}; B&k"B?9mL  
/qX=rlQ/n  
public static String toString(int algorithm){ eZ[O:Wvk:  
return name[algorithm-1]; ~xaPq=AH  
} o+T %n1$+V  
8<Yqpb  
public static void sort(int[] data, int algorithm) { 6 P6Pl&  
impl[algorithm-1].sort(data); *#2]`G)  
} ;/]v mgl2  
WT9 k85hqj  
public static interface Sort { )=c/{  
public void sort(int[] data); VOK0)O>&  
} h TY7`m">  
aR}L- -m  
public static void swap(int[] data, int i, int j) { A ^wIsAxT  
int temp = data; c$[cDf~  
data = data[j]; & e~g}7  
data[j] = temp; Y$ To)qo  
} j)neVPf%v  
} w-M,@[G  
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