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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。 03(4 x'z  
插入排序: \L\b$4$d  
Rh |nP&6  
package org.rut.util.algorithm.support; Z<phcqEi8  
bTu9;(  
import org.rut.util.algorithm.SortUtil; C $JmzrE  
/** BUR*n;V`  
* @author treeroot QIgNsz  
* @since 2006-2-2 iIogx8[  
* @version 1.0 "vslZ`RU  
*/ Q|L~=9  
public class InsertSort implements SortUtil.Sort{ wT\49DT"7  
qv"$Bd:]r  
/* (non-Javadoc) o lxByzTh>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O<\@~U  
*/ <|\Lm20 G]  
public void sort(int[] data) { +]50DxflA  
int temp; Yuc> fFA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c=+!>Z&i$G  
} )0R'(#  
} \G3rX9xG  
} X|8c>_}  
m9A!D  
} Ow077v ?  
ukY"+&  
冒泡排序: S+2(f> Z  
Bnd [X  
package org.rut.util.algorithm.support; f`/x"@~H5  
,iq4Iw  
import org.rut.util.algorithm.SortUtil; t_suF$  
Ki~1qu:  
/** j w9b )  
* @author treeroot \j)E 5b+  
* @since 2006-2-2 I9Fr5p-%O  
* @version 1.0 $j?1g#  
*/ ~!3r&(  
public class BubbleSort implements SortUtil.Sort{ PzR[KUK  
PY0j 9$i?  
/* (non-Javadoc) o+9j?|M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [=_jYzD,j|  
*/ 6u}</>}  
public void sort(int[] data) { r)6M!_]AW  
int temp; Z`BK/:vo3H  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %!L9)(}"  
if(data[j] SortUtil.swap(data,j,j-1); Ib0ZjX6  
} nJLFfXWx  
} KK%M~Y+tU'  
} TBrPf-Xr  
} Fr$5RAyg  
(@}!0[[^  
} V#}kwON  
kE(mVyLQ  
选择排序: 0<B$#8  
tdaL/rRe  
package org.rut.util.algorithm.support; y#$CMf -q^  
/^|Dbx!u  
import org.rut.util.algorithm.SortUtil; R^e.s -  
s|B3~Q]  
/** HX{`Vah E  
* @author treeroot w8D"CwS1Rx  
* @since 2006-2-2 XF_pN[}  
* @version 1.0 lUiL\~Gq  
*/ /[>sf[X\I9  
public class SelectionSort implements SortUtil.Sort { ;xs"j-r/  
 50C   
/* 6B ?twh)  
* (non-Javadoc) ivz5H(b  
* -[DOe?T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wg]LVW}  
*/ @jlw_ob2g  
public void sort(int[] data) { O5t[  
int temp; O s.4)  
for (int i = 0; i < data.length; i++) { -\n@%$M]G  
int lowIndex = i; 'oC) NpnH  
for (int j = data.length - 1; j > i; j--) { _H=Uwi_g  
if (data[j] < data[lowIndex]) { @k/NY *+  
lowIndex = j; g SAt@2*U2  
} SG4%}wn%  
} BIWWMg  
SortUtil.swap(data,i,lowIndex); [\b 0Lem  
} 8&Y^""#e)  
} ~<OSYb  
L`EBfz\n  
} )Iq<+IJ  
 {s{j~M  
Shell排序: w(TJ*::T  
QW~1%`  
package org.rut.util.algorithm.support; x7x\Y(@  
'anG:=  
import org.rut.util.algorithm.SortUtil; Q'mM3pq4r  
kd$D 3S ^{  
/** az|N-?u  
* @author treeroot 3gj+%%!G\  
* @since 2006-2-2 ;?g6QIN9  
* @version 1.0 ^Zy% fv,  
*/  y%b F&  
public class ShellSort implements SortUtil.Sort{ h.s+)fl\  
|WdPE@P  
/* (non-Javadoc) B i<Q=x'Z;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gy9U2Wgf|  
*/ Wh 2tNyS  
public void sort(int[] data) { v+=BCyT  
for(int i=data.length/2;i>2;i/=2){ 3nnJ8zQ  
for(int j=0;j insertSort(data,j,i); Eue~Y+K*b  
} }sO&. ME  
} \K]0JH  
insertSort(data,0,1); B\:%ufd ~  
} )sp4Ie  
h_IDO%  
/** ""Q P%  
* @param data n`&U~s8w  
* @param j x6ARzH\  
* @param i 2q4<t:!  
*/ 7y@Pa&^8  
private void insertSort(int[] data, int start, int inc) { B=A [ymm  
int temp; JyOo1E.  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c+nq] xOs'  
} kO*$"w#X[p  
} TLe~y1dwY=  
} T+k{W6  
2WVka  
} (<oy N7NT  
cFnDmt I:  
快速排序: l.bYE/F0&  
pW sDzb6?%  
package org.rut.util.algorithm.support; Gvqxi|  
T+K):u g  
import org.rut.util.algorithm.SortUtil; YgV817OV  
zXxT%ZcCj  
/** )fSOi| |C  
* @author treeroot 6Yxh9*N~]  
* @since 2006-2-2 YLE!m?  
* @version 1.0 qF-@V25P  
*/ W= qVc  
public class QuickSort implements SortUtil.Sort{ 7 uKY24  
`o8/(`a  
/* (non-Javadoc) '>ssqBnI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oVfLnI ;  
*/ &,CiM0  
public void sort(int[] data) { hL;(C) (  
quickSort(data,0,data.length-1); o,8TDg  
} Q_X.rUL0w  
private void quickSort(int[] data,int i,int j){ in-HUG  
int pivotIndex=(i+j)/2; "#oHYz3D  
file://swap zZ323pq  
SortUtil.swap(data,pivotIndex,j); ouFYvtFg  
]cMqahaY  
int k=partition(data,i-1,j,data[j]); u=7J /!H7^  
SortUtil.swap(data,k,j); 7.#F,Ue_0T  
if((k-i)>1) quickSort(data,i,k-1); R1GEh&U{  
if((j-k)>1) quickSort(data,k+1,j); \\dM y9M-  
| Aw%zw1@  
} 5VAK:eB  
/** t+iHQfuP9A  
* @param data 9!}8UALD  
* @param i $!yW_HTx  
* @param j Q;JM$a?5iV  
* @return ^R Fp8w(  
*/ 474SMx$  
private int partition(int[] data, int l, int r,int pivot) { #(JNn'fzq  
do{ cH?B[S;]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5ZK@`jkE  
SortUtil.swap(data,l,r); c~uKsU  
} Vq?p|wy  
while(l SortUtil.swap(data,l,r); ,+xB$e  
return l; c>RFdc:U  
} F!Q@ u  
 jQ  
} CtAwBQO  
u5 : q$P  
改进后的快速排序: r^paD2&}  
~%=MpQ3  
package org.rut.util.algorithm.support; 'JfdV%M  
lP@Ki5  
import org.rut.util.algorithm.SortUtil; <Fc;_GG  
(ECnM ti+  
/** ^ xh;  
* @author treeroot _i|t Y4L  
* @since 2006-2-2 3ojlB|Z  
* @version 1.0 J| bd)0  
*/ 1@R Db)<V  
public class ImprovedQuickSort implements SortUtil.Sort { d>fkA0G/9!  
R:k5QD9/&p  
private static int MAX_STACK_SIZE=4096; N@1+O,o  
private static int THRESHOLD=10; oxkoA  
/* (non-Javadoc) 4^~(Mh-Mw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OFv%B/O  
*/ D\s WZ  
public void sort(int[] data) { V(6Z3g  
int[] stack=new int[MAX_STACK_SIZE]; Md2>3-  
khrb-IY@  
int top=-1; /.MN  
int pivot; ;1.,Sn+zO  
int pivotIndex,l,r; _Khc3Jo  
87P>IO  
stack[++top]=0; U\;6mK)M^J  
stack[++top]=data.length-1; ()+ <)hg}2  
ruzspS  
while(top>0){ 3? 7\ T#=  
int j=stack[top--]; L=8<B=QT$  
int i=stack[top--]; }\#Rot>Y  
TDNQu_E  
pivotIndex=(i+j)/2; n3Z 5t  
pivot=data[pivotIndex]; \cUNsB5  
 4/1d&Sg  
SortUtil.swap(data,pivotIndex,j); WP+oFkw>  
R0vIbFwj  
file://partition 4K\(xd&Q  
l=i-1; ws|;  `  
r=j; L>%o[tS  
do{ e5B Qr$j  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); m{uxI za  
SortUtil.swap(data,l,r); )3w@]5j  
} % !>I*H  
while(l SortUtil.swap(data,l,r); #+5pgD2C  
SortUtil.swap(data,l,j); aL%AQB,  
muZ~*kMc  
if((l-i)>THRESHOLD){ DRgTe&+  
stack[++top]=i; ul2")HL];  
stack[++top]=l-1; &twf,8  
} ayD}r#7  
if((j-l)>THRESHOLD){ }mdAM6  
stack[++top]=l+1; k |%B?\m  
stack[++top]=j; }J1tdko#  
} .CU5}Tv-  
hn=[1<#^(  
} 5v}8org  
file://new InsertSort().sort(data); Vq;A>  
insertSort(data); mvZw  
} ,7NZu0  
/** .0rh y2  
* @param data "zFNg';  
*/ $UCAhG$  
private void insertSort(int[] data) { \lC   
int temp; oMTf"0EIW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JJ'.((  
} *B{j.{ p(  
} @reeO=  
} C@W"yYt  
aKuSd3E@#  
} h{p=WWK  
>ByXB!Wi+  
归并排序: ``e$AS  
*nsAgGKKM^  
package org.rut.util.algorithm.support; oDYRQozo>  
GBFtr   
import org.rut.util.algorithm.SortUtil; [7S} g  
_DNHc*  
/** j;3[KLmuK%  
* @author treeroot o1Q7Th  
* @since 2006-2-2 #x3ujJ  
* @version 1.0 FE! lok  
*/ p>;_e(  
public class MergeSort implements SortUtil.Sort{ `zXO_@C  
#ap9Yoyk\  
/* (non-Javadoc) q]N:Tpm9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D{4YxR PX  
*/ )!:Lzi  
public void sort(int[] data) { lBFMwJU)  
int[] temp=new int[data.length]; ) ^3avRsC  
mergeSort(data,temp,0,data.length-1); p4i]7o@  
} 16i "Yg!*  
x61U[/r  
private void mergeSort(int[] data,int[] temp,int l,int r){ H;fxxu`cS  
int mid=(l+r)/2; hq/k*;  
if(l==r) return ; MxcFvo*LCp  
mergeSort(data,temp,l,mid); wz.6du6-  
mergeSort(data,temp,mid+1,r); 7=OQ8IM !  
for(int i=l;i<=r;i++){ H4!+q:<  
temp=data; /E5 5Pec  
} ~\3kx]^10  
int i1=l; Z(_ZAB%+D  
int i2=mid+1; *`Yv.=cd  
for(int cur=l;cur<=r;cur++){ ;cz|ss=  
if(i1==mid+1) Ox'/` Mppw  
data[cur]=temp[i2++]; >P $;79<  
else if(i2>r) /<8N\_wh  
data[cur]=temp[i1++]; OdY=z!Fls  
else if(temp[i1] data[cur]=temp[i1++]; Vy,^)]  
else ;~u{56  
data[cur]=temp[i2++]; k{$ ao  
} {Gw.l."  
} NDAw{[.%  
#\ n8M  
} 0#*#a13  
] 0m&(9  
改进后的归并排序: PF7&p~O(Z  
JA_BKA  
package org.rut.util.algorithm.support; 4bJZmUb  
-,{-bi  
import org.rut.util.algorithm.SortUtil; ]B]*/  
]$\|ktY!  
/** x5WW--YR+  
* @author treeroot 4[-*~C|W5  
* @since 2006-2-2 p6XtTx  
* @version 1.0 fb:j%1WF  
*/ /q$,'^.A  
public class ImprovedMergeSort implements SortUtil.Sort { (?! ,p^  
^~HQC*  
private static final int THRESHOLD = 10; ?EK?b s  
~ Yngkt  
/* 13&0rLS  
* (non-Javadoc) .eO?Z^  
* h"[+)q%L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) la?Wnw  
*/ t/PlcV_M"  
public void sort(int[] data) { TbF4/T1b  
int[] temp=new int[data.length]; |xvy')(b  
mergeSort(data,temp,0,data.length-1); 0% #<c p  
} <ExZ:ip  
3#45m+D  
private void mergeSort(int[] data, int[] temp, int l, int r) { e=QK}gzX  
int i, j, k; uH;-z_Wpn!  
int mid = (l + r) / 2; :BGA.  
if (l == r) D\YE^8/  
return; @M8|(N%  
if ((mid - l) >= THRESHOLD) 2JS`Wqy  
mergeSort(data, temp, l, mid); Z0>DNmH*  
else @hImk`&[N  
insertSort(data, l, mid - l + 1); #vqo -y7@  
if ((r - mid) > THRESHOLD) ([V V%ovZ  
mergeSort(data, temp, mid + 1, r); lM[XS4/TRa  
else b4""|P?L  
insertSort(data, mid + 1, r - mid); q;wLa#4)J  
"A)( "  
for (i = l; i <= mid; i++) { *I0-O*Xr  
temp = data; rUjdq/I:Z  
} oejfU;+$  
for (j = 1; j <= r - mid; j++) { M}wXJ8aF?  
temp[r - j + 1] = data[j + mid]; 5 VA(tzmCt  
} q0bHB_|wL  
int a = temp[l]; ?`Y\)'}   
int b = temp[r]; <x),,a=X  
for (i = l, j = r, k = l; k <= r; k++) { :g\rQazxO  
if (a < b) { LR,7,DH$9'  
data[k] = temp[i++]; gxGrspqg  
a = temp; kz S=g|_  
} else { ^v@4|E$  
data[k] = temp[j--]; F("#^$  
b = temp[j]; [|3>MZ2/  
} 92'wkS  
} KYxBVgJ  
} GBC*>Y  
N=)z  
/** i o3yLIy,  
* @param data *+b6B_u]  
* @param l <p?&udqD  
* @param i -sMytHH.  
*/ 8g >b  
private void insertSort(int[] data, int start, int len) { [!VOw@uz  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); U#o'H @  
} 6R29$D|HFO  
} *AIEl"29  
} !"TZ:"VZU  
} Bz`yfl2  
)P>u9=?,=E  
堆排序: D8# on!  
V=:_d,  
package org.rut.util.algorithm.support; pNE(n4v  
jUqy8q&  
import org.rut.util.algorithm.SortUtil; ? QDWuPhN  
M'1!<a-Mp  
/** j,2l8?  
* @author treeroot da$BUAqU  
* @since 2006-2-2 8%~t  
* @version 1.0 +tN &a  
*/ S2VVv$r_6  
public class HeapSort implements SortUtil.Sort{ Q^Bt1C  
D["MUB4l  
/* (non-Javadoc) jRpdft  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2~;&g?T6  
*/ @)8]e S7  
public void sort(int[] data) { =qvZpB7ZZ  
MaxHeap h=new MaxHeap(); w h$jr{  
h.init(data); i(6J>^I  
for(int i=0;i h.remove(); Kt.~aaG_  
System.arraycopy(h.queue,1,data,0,data.length); ;#G%U!p  
} sxED7,A  
0D(cXzQP  
private static class MaxHeap{ R& =f:sEi  
8"vwU@cfC  
void init(int[] data){ >LF&EM]  
this.queue=new int[data.length+1]; ! qJI'+_  
for(int i=0;i queue[++size]=data; e^$j5jV  
fixUp(size); ELh3 ^  
} kYxS~Kd<  
} ER{3,0U  
$'[q4wo<  
private int size=0;  \`xkp[C  
*,\` o~  
private int[] queue; XvSIWs  
}+Vv0jX|V  
public int get() { IdM*5Y>f  
return queue[1]; YJ2ro-X  
} []&(D_e"  
9F+P@Kp  
public void remove() { YbMssd2Yg  
SortUtil.swap(queue,1,size--); J%dJw}  
fixDown(1); Vul+]h[!h  
} q3'o|pp  
file://fixdown 0d\~"4 R  
private void fixDown(int k) { f3 ]  
int j; =`I?mn&  
while ((j = k << 1) <= size) { 3,.% s  
if (j < size %26amp;%26amp; queue[j] j++; -0,4eg j3  
if (queue[k]>queue[j]) file://不用交换 +EASAq  
break; 8kW/DcLE  
SortUtil.swap(queue,j,k); %TK&)Q% h5  
k = j; O=jN&<rb  
} w&lZ42(mF  
} 5su.+4z\  
private void fixUp(int k) { f(u&XuZ  
while (k > 1) { ]RFdLV?  
int j = k >> 1; g<[rH%\6fg  
if (queue[j]>queue[k]) dA#{Cn;  
break; $ehg@WK}.  
SortUtil.swap(queue,j,k); v29G:YQe  
k = j; "~p+0Xws9  
} G+Dpma ]  
} ;WI]vn  
j.QHkI1.  
} z*.v_Mx  
"j Zm0U$,*  
} Qm);6X   
cj(X2L  
SortUtil: hswTn`f  
<FmBa4ONU  
package org.rut.util.algorithm; XS0V:<+,  
{~GR8 U  
import org.rut.util.algorithm.support.BubbleSort; GF R!n1Hv  
import org.rut.util.algorithm.support.HeapSort; u;n(+8sz  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1| xN%27>  
import org.rut.util.algorithm.support.ImprovedQuickSort; |ft:|/^F&  
import org.rut.util.algorithm.support.InsertSort; }h~'AM  
import org.rut.util.algorithm.support.MergeSort; / = ^L iP  
import org.rut.util.algorithm.support.QuickSort; 9!t4>  
import org.rut.util.algorithm.support.SelectionSort; !O\X+#j  
import org.rut.util.algorithm.support.ShellSort; $au2%NL  
gEKO128  
/** qB JRS'6'9  
* @author treeroot XU#,Bu{  
* @since 2006-2-2 /Antb6E  
* @version 1.0 +?e}<#vd'?  
*/ &LU'.jY  
public class SortUtil { jpO38H0)  
public final static int INSERT = 1; XZ:1!;  
public final static int BUBBLE = 2; 9oq)X[  
public final static int SELECTION = 3; ^"tqdeCb=  
public final static int SHELL = 4; I>((o`  
public final static int QUICK = 5; g[!Cj,  
public final static int IMPROVED_QUICK = 6; gNa#|  
public final static int MERGE = 7; hh&Js'd  
public final static int IMPROVED_MERGE = 8; &N{zkMf  
public final static int HEAP = 9; [~?M/QI9  
?0npEz|  
public static void sort(int[] data) { )Z:m)k>r;  
sort(data, IMPROVED_QUICK); ~.Q4c*_b  
} h3h8lt_ |  
private static String[] name={ P{lh)m>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" j<$R4A 1  
}; f8!l7{2%q  
P|N?OocE  
private static Sort[] impl=new Sort[]{ 5<r)+?!n  
new InsertSort(), y#r\b6  
new BubbleSort(), 6{^*JC5nj  
new SelectionSort(), cMtJy"kK  
new ShellSort(), Mw|SH;nM  
new QuickSort(), #KJZR{  
new ImprovedQuickSort(), ' PL_~  
new MergeSort(), s?<!&Y  
new ImprovedMergeSort(), +UaO<L  
new HeapSort() dP3VJ3+ %  
}; d H_2 o  
 oUS ,+e  
public static String toString(int algorithm){ 8OBF^r44R  
return name[algorithm-1]; g*r/u;  
} STp!8mL  
5V rcR=?O  
public static void sort(int[] data, int algorithm) { W^ClHQ"Iy  
impl[algorithm-1].sort(data); `1_FQnm)  
} *(VbPp_H_  
^8\Y`Z0%  
public static interface Sort { D JJZJ}7  
public void sort(int[] data); YlB["@\[B  
} 5@.zz"o.`  
0hZxN2r  
public static void swap(int[] data, int i, int j) { >%i9oI<)  
int temp = data; Dtt\~m;AR  
data = data[j]; j@V $Mbv  
data[j] = temp; \#_@qHAG  
} n% U9iwJ.  
} UNY@w=]<  
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