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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。 /:];2P6#X  
插入排序: Vf* B1Zb  
L&F\"q9q71  
package org.rut.util.algorithm.support; b+fy&rk@-  
^*T{-U'  
import org.rut.util.algorithm.SortUtil; y#SD-# I-  
/** REe%>|   
* @author treeroot ( ]uoN4  
* @since 2006-2-2 "gVH;<&]  
* @version 1.0 n@8{FoF  
*/ tw^.(m5d  
public class InsertSort implements SortUtil.Sort{ {d5ur@G1  
AZm)$@e)  
/* (non-Javadoc) 0Nzv@g{3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )eVDp,.^  
*/ hQrsZv:Q  
public void sort(int[] data) { m_W.r+s~C4  
int temp; +R jD\6bJb  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H<3b+Sg  
} sjbC~Te--  
} q+=@kXs>+  
} _p^ "!  
I;PO$T  
} vG=$UUh@~  
<i @jD  
冒泡排序: nWg)zj:  
[UrS%]OSR  
package org.rut.util.algorithm.support; `e:RZ  
F973U  
import org.rut.util.algorithm.SortUtil; X_yU"U  
<cd%n-  
/** &dMSX}t  
* @author treeroot @g` ,'r  
* @since 2006-2-2 3^Q U4  
* @version 1.0 [_B&7#3>7  
*/ H s 3*OhK\  
public class BubbleSort implements SortUtil.Sort{ T[II;[EiE  
Ny<G2! W  
/* (non-Javadoc) 6R,b 8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x@l~*6!K  
*/ W- B[_  
public void sort(int[] data) { V&n JT~k  
int temp; !!pi\J?sk  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {:j!@w3  
if(data[j] SortUtil.swap(data,j,j-1); <W{0@?y  
} [wxI X  
} +VFwYdW,  
} {Z;GNMO:  
} 0(6`dr_  
fXQRsL8 ]  
} Q";eyYdOL  
J<O_N~$$*  
选择排序: -w0>4JDs  
O/~^}8TLL  
package org.rut.util.algorithm.support; 73<yrBxp  
=f|a?j,f~  
import org.rut.util.algorithm.SortUtil; ${2fr&Tp  
LxDhthZi_  
/** )o,0aGo>Of  
* @author treeroot D'+8]B  
* @since 2006-2-2 cW%O-  
* @version 1.0 ~;s)0M  
*/ md s\~l73  
public class SelectionSort implements SortUtil.Sort { 2geC3v% 0o  
_L.yt5_  
/* J8'zvH&I  
* (non-Javadoc) !X_~|5.  
* S!cXc/H-R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &d;$k  
*/ 3S?+G)qKo  
public void sort(int[] data) { z#/*LP#oY  
int temp; (o\~2e:  
for (int i = 0; i < data.length; i++) { u{z{3fW_  
int lowIndex = i; )UUe5H6Hd0  
for (int j = data.length - 1; j > i; j--) { x=)$sD-3  
if (data[j] < data[lowIndex]) { -/?<@*n  
lowIndex = j; 9m!fW|4  
} )P])0Y-  
} JH#?}L/0Fe  
SortUtil.swap(data,i,lowIndex); V|`|CVFo]  
} E]Q)pZ{Jb  
} +Eg# 8/q  
7L"/4w  
} g7-K62bb  
!HYqM(|{.  
Shell排序: 7a net  
E .5xzY  
package org.rut.util.algorithm.support; K(2s%  
8EA?'~"  
import org.rut.util.algorithm.SortUtil; Q!v[b{]8  
kF .b)  
/** K%;yFEZ  
* @author treeroot WTx;,TNG  
* @since 2006-2-2 >wwEa4   
* @version 1.0 VXS9E383  
*/ `RRORzXoS  
public class ShellSort implements SortUtil.Sort{ D.?gV_  
5"U7I{\  
/* (non-Javadoc) \\JXY*DA:+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r^)<Jy0|r  
*/ T*m_rDDt  
public void sort(int[] data) { @$]h[   
for(int i=data.length/2;i>2;i/=2){ Pl4d(2 7  
for(int j=0;j insertSort(data,j,i); zAewE@N#_  
} p(Mv^ea  
} g,nEiL  
insertSort(data,0,1); ojri~erJE?  
} 5Mr:(|JyV  
,U}8(D~:  
/** 2X`M&)"X  
* @param data cf9y0  
* @param j c@`P{ 6  
* @param i DNPK1e3a{  
*/ (!s[~O6  
private void insertSort(int[] data, int start, int inc) { bu- RU(%  
int temp; ^_uzr}LE`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); rGs> {-T3  
} e]QkZg2?Yn  
} DVd/OU  
} l}x{.q7U l  
F+GQl  
} UWHC]V?  
s6I]H  
快速排序: ]+AI:  
 (c"!0v  
package org.rut.util.algorithm.support; `8I&(k<wLe  
LHp s2,  
import org.rut.util.algorithm.SortUtil; 8'y|cF%U  
~$`b{  
/** m N{$z<r  
* @author treeroot S<TfvQ\,"@  
* @since 2006-2-2 (w*$~p  
* @version 1.0 kHO\#fF<  
*/ (<12&=WxE  
public class QuickSort implements SortUtil.Sort{ {RK#W~h  
2rxdRg'YLQ  
/* (non-Javadoc) 7 ?Fl [FW$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k(MQ:9'|  
*/ NoMC* ",b>  
public void sort(int[] data) { MIgIt"M jz  
quickSort(data,0,data.length-1); gU`QW_{  
} UJb7v:^  
private void quickSort(int[] data,int i,int j){ ]n{2cPx5d  
int pivotIndex=(i+j)/2; QwhPN'U  
file://swap tQ/U'Ap&  
SortUtil.swap(data,pivotIndex,j); -$7Jc=:>  
Z"n]y4h  
int k=partition(data,i-1,j,data[j]); 1xw},y6T2  
SortUtil.swap(data,k,j); Ac|`5'/Tx  
if((k-i)>1) quickSort(data,i,k-1); ]SQ_*$`  
if((j-k)>1) quickSort(data,k+1,j); bHp|> g  
dgO2fI  
} ;,viE~n  
/** 7l?=$q>k"  
* @param data dWI\VS9  
* @param i w:qwU\U>x  
* @param j XLtuck  
* @return f~]5A%=cZ  
*/ o*<(,I%  
private int partition(int[] data, int l, int r,int pivot) { B$\5=[U  
do{ (vQShe\  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); s#4 "f  
SortUtil.swap(data,l,r); @gZ%>qe  
} Cnn,$R=/s  
while(l SortUtil.swap(data,l,r); R)#"Ab Z'  
return l; "DUL} "5T  
} 5f1yszd  
j*CnnM#n  
} 2+|[e_  
FCg,p2  
改进后的快速排序: ;$W|FpR2  
[ P 8e=;  
package org.rut.util.algorithm.support; 7Q^t(  
A0'Yfuie  
import org.rut.util.algorithm.SortUtil; U7{, *  
W{k}ogI;  
/** 5Eq_L  
* @author treeroot aa$+(  
* @since 2006-2-2 V;>p@uE,P  
* @version 1.0 oqG 0 @@  
*/ xNT[((  
public class ImprovedQuickSort implements SortUtil.Sort { v=|ahsYC  
.rwZ`MP  
private static int MAX_STACK_SIZE=4096; uYV# '%  
private static int THRESHOLD=10; [~$9n_O94  
/* (non-Javadoc) `2GHB@S"k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :[,n`0lH  
*/ ;X\,-pjv  
public void sort(int[] data) { L> cTI2NB.  
int[] stack=new int[MAX_STACK_SIZE]; ujHqw Rh  
" MlY G6  
int top=-1; VNF@)!l  
int pivot; ^G=s<pp  
int pivotIndex,l,r; f\1)BZ'I  
e;,D!  
stack[++top]=0; Fz-Bd*uS  
stack[++top]=data.length-1; ) _"`{2  
`j@2[XdHu  
while(top>0){ &d=j_9   
int j=stack[top--]; mL ]zkD_  
int i=stack[top--]; |_Z(}% <o  
m\[r6t]V  
pivotIndex=(i+j)/2; jeC3}BL }  
pivot=data[pivotIndex]; LY/K ,6^a  
]r{y+g|  
SortUtil.swap(data,pivotIndex,j); sFMSH :5z  
M~=9ym  
file://partition Yaht<Hy  
l=i-1; d XrLeoK  
r=j; <t&0[l  
do{ (;V6L{Rf>  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); an=8['X  
SortUtil.swap(data,l,r); WM~@/J  
} P;{f+I|`  
while(l SortUtil.swap(data,l,r); vEk jd#  
SortUtil.swap(data,l,j); hr(E, TAe  
W/L~&.'  
if((l-i)>THRESHOLD){ w>J|416  
stack[++top]=i; 0DV .1  
stack[++top]=l-1; z`y!C3w<  
} +g>)Bur  
if((j-l)>THRESHOLD){ cE$7CSR  
stack[++top]=l+1; 3a_~18W  
stack[++top]=j; iG^o@*}a  
} a"4j9cO  
p<: bP w  
} y}Oc^Fc  
file://new InsertSort().sort(data); )OS^tG[=  
insertSort(data); tI~.3+F  
} }vgeQh-G  
/** V)mitRaV  
* @param data S=@.<gS  
*/ Ko|nF-r_  
private void insertSort(int[] data) { Bq3"l%hI  
int temp; Lk9X>`b#B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f .-b.nNf  
} slaYr`u  
} JvX]^t/}  
} SfLZVB  
B+:/!_  
} m-Z<zEQ  
)O*\}6:S  
归并排序: +twl`Z3n  
+}[M&D  
package org.rut.util.algorithm.support; lA>^k;+>  
\"Jgs.  
import org.rut.util.algorithm.SortUtil; W;!OxOWZJ  
-j9Wf=  
/** 0}H7Xdkp  
* @author treeroot jMr[ UZ  
* @since 2006-2-2 EIQ`?8KSR  
* @version 1.0 cuzU*QW"g  
*/ X?whyD)vE@  
public class MergeSort implements SortUtil.Sort{ +L(|?|i8  
)B'&XLK  
/* (non-Javadoc) !1(*D*31  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a8nqzuI  
*/ m#w1?y)Z@X  
public void sort(int[] data) { W'lejOiw  
int[] temp=new int[data.length]; &GYnGrw?@  
mergeSort(data,temp,0,data.length-1); &Z'3n9zl  
} bji5X')~#  
=`<9N %  
private void mergeSort(int[] data,int[] temp,int l,int r){ &`x1_*l  
int mid=(l+r)/2; Pa)'xfQ$Y6  
if(l==r) return ; f[1 s4Dp3-  
mergeSort(data,temp,l,mid); "qh~wKJ  
mergeSort(data,temp,mid+1,r); cvOCBg38BH  
for(int i=l;i<=r;i++){  N$ oQK(  
temp=data; {:;6 *W  
} da ' 1 H  
int i1=l; J(>T&G;  
int i2=mid+1; ;*(i}'  
for(int cur=l;cur<=r;cur++){ Q Uy7Q$W  
if(i1==mid+1) VEsIhjQ  
data[cur]=temp[i2++]; )x5t']w`K  
else if(i2>r) NJ^Bv`  
data[cur]=temp[i1++]; Uv)B  
else if(temp[i1] data[cur]=temp[i1++]; :MaP58dhh  
else )WNw0cV}J>  
data[cur]=temp[i2++]; "%(SLQOyy  
} z!s1$5:"0  
} po9f[/s'+o  
TI/5'Oke$  
} ]A=yj@o$xN  
lxsn(- j  
改进后的归并排序: Uee(1  
NoOrQ m  
package org.rut.util.algorithm.support; c/lT S  
G)IK5zCDd  
import org.rut.util.algorithm.SortUtil; ^]5^p9Jt"e  
DuQW?9^232  
/** v\lKY*@f  
* @author treeroot g@zhhBtQ  
* @since 2006-2-2 %63s(ekU  
* @version 1.0 =28ZSo^  
*/ (nu;o!mo9  
public class ImprovedMergeSort implements SortUtil.Sort { M]Hf>7p  
Na>w~  
private static final int THRESHOLD = 10; FLo`EE":O(  
-K (>uV!?  
/* 4#,,_\r  
* (non-Javadoc) mY[*(a  
* p%R+c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q h{P>}  
*/ :85QwN]\  
public void sort(int[] data) { dv Vz#  
int[] temp=new int[data.length]; L1#_  
mergeSort(data,temp,0,data.length-1); .~C%:bDnX7  
} s<+;5, Q|  
T65"?=<EB  
private void mergeSort(int[] data, int[] temp, int l, int r) { )(9[>_+40  
int i, j, k; &+0?Xip{Z  
int mid = (l + r) / 2; O\SH;y,N  
if (l == r) a/</P |UG  
return; }_BNi;H  
if ((mid - l) >= THRESHOLD) VAo`R9^D#  
mergeSort(data, temp, l, mid); |xF!3GGms  
else &hUEOif  
insertSort(data, l, mid - l + 1); yl&s!I  
if ((r - mid) > THRESHOLD) kl1/(  
mergeSort(data, temp, mid + 1, r); b<%c ]z  
else aL*}@|JL"  
insertSort(data, mid + 1, r - mid); Qz89=#W  
c^rWS&)P  
for (i = l; i <= mid; i++) { h=qT@)h1>  
temp = data; "@^Q" RF  
} &2Ef:RZF  
for (j = 1; j <= r - mid; j++) { $;&l{=e2)  
temp[r - j + 1] = data[j + mid]; ;b (ww{&  
} t,n2N13  
int a = temp[l]; xs&xcR R"  
int b = temp[r]; mo+!79&  
for (i = l, j = r, k = l; k <= r; k++) { %LM6=nt  
if (a < b) { vN:!{)~z  
data[k] = temp[i++]; ?6]B6  
a = temp; F9Af{*Jw?x  
} else { `kE7PXqa  
data[k] = temp[j--]; :+ mULUi  
b = temp[j]; 1]9w9! j  
} (S4HU_,88  
} 6$0<&')Yb  
} 5dhy80|g]  
6#AEVRJKU@  
/** _Hd|y  
* @param data B;S'l|-?  
* @param l 4l{$dtKbI  
* @param i A*vuSQt(  
*/ 1Q!kk5jE  
private void insertSort(int[] data, int start, int len) { yZ[=Y  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); '9=b@SaAj  
} m)LI| v  
} fL# r@TB-s  
} Aix6O=K6  
} `N&*+!O%  
d3|/&gDBK  
堆排序: &AOGg\  
[& Z- *a  
package org.rut.util.algorithm.support; PO8Z2"WI  
-EE'xh-zD  
import org.rut.util.algorithm.SortUtil; kG{};Vm  
h _{f_GQ"  
/** D(;+my2  
* @author treeroot U<Tv<7`  
* @since 2006-2-2 x.Egl4b3  
* @version 1.0 [^?i<z{0C  
*/ h`n '{s  
public class HeapSort implements SortUtil.Sort{ g1|Py t{  
IG# wY  
/* (non-Javadoc) k*n~&y:O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |(ab0b #  
*/ LSA6*Q51  
public void sort(int[] data) { 1Ml<>  
MaxHeap h=new MaxHeap(); "?F[]8F.b  
h.init(data); TIZ2'q5wg  
for(int i=0;i h.remove(); Z$g'h1,zW  
System.arraycopy(h.queue,1,data,0,data.length); 6u#eLs  
} c+E\e]{  
`kxC# &HO  
private static class MaxHeap{ tM;cvc`/  
Y JMs9X~3  
void init(int[] data){ Im\ ~x~{  
this.queue=new int[data.length+1]; [8UZ5_1WL  
for(int i=0;i queue[++size]=data; Tx~w(A4:  
fixUp(size); Uz_p-J0  
} _AFje  
} Wz=& 0>Mm_  
T0")Ryu  
private int size=0; ;l _b.z0^6  
Jk-WD"J6  
private int[] queue; F<4 :P=  
|9%~z0  
public int get() { sZCK?  
return queue[1]; |f @A-d X  
} LwRzzgt  
&"JC8  
public void remove() { gJr)z7W'8  
SortUtil.swap(queue,1,size--); gJX"4]Ol#}  
fixDown(1); [n| }>  
} $)"T9 $>$  
file://fixdown ~EY)c~ H  
private void fixDown(int k) { @,e o*  
int j; F?R6zvive  
while ((j = k << 1) <= size) { -rI7ihr*  
if (j < size %26amp;%26amp; queue[j] j++; APF`b  
if (queue[k]>queue[j]) file://不用交换 PdVx&BL*  
break; {22ey`@`h  
SortUtil.swap(queue,j,k); hG.}>(VV  
k = j; D((/fT)eD  
} jd ;)8^7K  
} !{CIP`P1  
private void fixUp(int k) { r3U7`P   
while (k > 1) { 53:u6bb;  
int j = k >> 1; ^_Lnqk6  
if (queue[j]>queue[k]) yN{**?b  
break; #&IrCq+  
SortUtil.swap(queue,j,k); %A~. NNbS  
k = j; xjU0&  
} g]HxPq+O  
} nbP}a?XC  
6wB !dl  
} V.u^;gr3  
89D`!`Ah]  
} rwUhNth-Qh  
85io %>&0  
SortUtil: P;25 F  
/_cpS q  
package org.rut.util.algorithm; I:=!,4S;  
 lY`WEu  
import org.rut.util.algorithm.support.BubbleSort; @(a~ p  
import org.rut.util.algorithm.support.HeapSort; >BO!jv!a  
import org.rut.util.algorithm.support.ImprovedMergeSort; b_{+OqI  
import org.rut.util.algorithm.support.ImprovedQuickSort; e[T3,2C  
import org.rut.util.algorithm.support.InsertSort; |AvsT{2  
import org.rut.util.algorithm.support.MergeSort; h6LjReNo  
import org.rut.util.algorithm.support.QuickSort; sOWP0x  Y  
import org.rut.util.algorithm.support.SelectionSort; K ~\b+  
import org.rut.util.algorithm.support.ShellSort; Uhh[le2 %  
?UflK  
/** 0W6= '7  
* @author treeroot ?cz7s28a  
* @since 2006-2-2 %iIr %P?  
* @version 1.0 $?kTS1I(  
*/ lp$,`Uz`  
public class SortUtil { aF"PB h=  
public final static int INSERT = 1; L~|_)4  
public final static int BUBBLE = 2; T[},6I|!  
public final static int SELECTION = 3; NODE`VFu  
public final static int SHELL = 4; t x1TtWo  
public final static int QUICK = 5; tJ d/u QJ  
public final static int IMPROVED_QUICK = 6; I %1P:-  
public final static int MERGE = 7; w{;bvq%lY  
public final static int IMPROVED_MERGE = 8; GF<SQHL,  
public final static int HEAP = 9; P1TTaYu  
Jn?ZJZ  
public static void sort(int[] data) { m7> )p]]  
sort(data, IMPROVED_QUICK); f]Z9=  
} 6 ;\>,  
private static String[] name={ W}(xE?9&  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" v%c--cO(S4  
}; JKYl  
Jn0L_@  
private static Sort[] impl=new Sort[]{ B$97"$#u  
new InsertSort(), 5iItgVTW  
new BubbleSort(), k lr1"q7  
new SelectionSort(), M|z4Dy  
new ShellSort(), +>mU4Fwp  
new QuickSort(), It'PWqZtG  
new ImprovedQuickSort(), Vc|QW  
new MergeSort(), n)]u|qq  
new ImprovedMergeSort(), m<4tH5 };d  
new HeapSort() z{> )'A/  
}; J]*?_>"#8  
]'i}}/}u2  
public static String toString(int algorithm){ #)%dG3)e  
return name[algorithm-1]; -Ze2]^#dl  
} <^A1.o< GN  
5=_))v<Tp  
public static void sort(int[] data, int algorithm) { g9gyx/'*  
impl[algorithm-1].sort(data); QfU{W@!h  
} c$%I^f}'  
@JD!.3  
public static interface Sort { Mg^3Y'{o  
public void sort(int[] data); -S}^b6WL  
} 2I~a{:O  
V@ph.)z  
public static void swap(int[] data, int i, int j) { AUkePp78  
int temp = data; r?n3v[B  
data = data[j]; 9d,2d5Y  
data[j] = temp; :+S~N)0j^  
} ivl_=  
} `>}e 5  
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