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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。 a0jzt!ci  
插入排序:  \62!{  
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package org.rut.util.algorithm.support; 0iV~MQZ(  
Ov#G7a"  
import org.rut.util.algorithm.SortUtil; d}2(G2z^  
/** _7;D0l  
* @author treeroot M2nWvU$  
* @since 2006-2-2 ]P96-x  
* @version 1.0 wu.>'v?y  
*/ k#n%at.g  
public class InsertSort implements SortUtil.Sort{ p Le[<N  
I_Omv{&u  
/* (non-Javadoc) n#5S-z1KNw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F@b=S0}K  
*/ 1'%n?\OK66  
public void sort(int[] data) { $T6+6<  
int temp; )SHB1U25{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ! mZWd'  
} =u`tlN5pOT  
} wg4Ol*y'  
} ZUakW3f  
T|2v1Vj  
} FEi@MJJ\e  
y7Nd3\v [\  
冒泡排序: P7epBWqDP  
L1kA AR  
package org.rut.util.algorithm.support; mgTzwE_\  
MnP+L'|  
import org.rut.util.algorithm.SortUtil; TSH'OW !b  
X.V4YmZ- ;  
/** #fDM{f0]R  
* @author treeroot B%WkM\\!^  
* @since 2006-2-2 lf\^!E:  
* @version 1.0 G8.nKoHv7x  
*/ G0he'BR  
public class BubbleSort implements SortUtil.Sort{ ^vJy<  
c=D~hzN  
/* (non-Javadoc)  L+CPT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @V Sr'?7-  
*/ :_h#A }8Xd  
public void sort(int[] data) { Ek60[a  
int temp; q<K/q"0-l  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4+Jf!ovS=  
if(data[j] SortUtil.swap(data,j,j-1); 1/v#Z#3[  
} ,hWuAu6.L  
} rY M@e  
} }S;A%gYm  
} w3&L 6|,  
K,,'{j2#f  
} qFI19`?8E  
?z0W1a  
选择排序: yG^pND>_df  
V}ls|B$Y  
package org.rut.util.algorithm.support; t)mc~M9w  
}nptmc  
import org.rut.util.algorithm.SortUtil; QabLMq@n`  
[ @2$W?0i  
/** p || mR  
* @author treeroot m%b# B>J,n  
* @since 2006-2-2 $WO{!R  
* @version 1.0 f VJWW):  
*/ - LB}=  
public class SelectionSort implements SortUtil.Sort { rN,T}M= 2  
L^=G(op*  
/* &(m01  
* (non-Javadoc) Hp*N%  
* dl(!{tZ#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6#Rco%07zI  
*/ RIDl4c [  
public void sort(int[] data) { C#B|^A_  
int temp; R\-]$\1D  
for (int i = 0; i < data.length; i++) { K'y|_XsBB)  
int lowIndex = i; @aP1[(m  
for (int j = data.length - 1; j > i; j--) { Hzz v 6k  
if (data[j] < data[lowIndex]) { X6BOB?  
lowIndex = j; hrGX65>  
} %/d1x  
} {B4.G8%Z  
SortUtil.swap(data,i,lowIndex); ^v+p@k  
} czsnPmNEI  
} q0b*#j  
DPkH:X  
} tO?-@Qf/9<  
-`NzBuV$2,  
Shell排序: ,YJn=9pTl  
&A=c[pc  
package org.rut.util.algorithm.support; =mSu^q(l  
'hFL`F*  
import org.rut.util.algorithm.SortUtil; ;0`IFtz  
>I',%v\?@  
/** LQR^lD+_=  
* @author treeroot HBZ6Pj  
* @since 2006-2-2 dkeMiL m  
* @version 1.0 Ro;I%j  
*/ mW~*GD~r  
public class ShellSort implements SortUtil.Sort{ @<&u;8y-Cn  
o$Y#C{wC%  
/* (non-Javadoc) ErgWsAw-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  >hzSd@J&  
*/ ,N nh$F  
public void sort(int[] data) { r7^v@  
for(int i=data.length/2;i>2;i/=2){ L2wX?NA  
for(int j=0;j insertSort(data,j,i); R\<d&+q@  
}  n}- _fx  
} uL ~wMX  
insertSort(data,0,1); c|K:oi,z  
} 2%*\XPt)  
a}iP +#;  
/** zFQm3!.  
* @param data Zy.3yQM9i  
* @param j B*9?mcP\  
* @param i aj/+#G2  
*/ d%RH]j4  
private void insertSort(int[] data, int start, int inc) { 9aX!<Z  
int temp; >nvnU`\  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +"1-W> HV  
} (g&@E(@]?  
} skU }BUK6  
} ]u:_r)T  
64vj6 &L  
} Ktu~%)k%  
a!f71k r  
快速排序: %xKZ" #Z#K  
+~=j3U  
package org.rut.util.algorithm.support; 4P"XT  
LXZI|K[}k  
import org.rut.util.algorithm.SortUtil; 0g~Cdp  
G&t|aY-   
/** 7#SfuZ0@  
* @author treeroot x&"P^gh)  
* @since 2006-2-2 U$S{j&?  
* @version 1.0 }0f~hL24  
*/ H7k@Br  
public class QuickSort implements SortUtil.Sort{ 3w"_Onwk  
ZAn9A>5_  
/* (non-Javadoc) t/3HX]B_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J#q^CWN3R  
*/ ,gM:s}l!dJ  
public void sort(int[] data) { Az-!X!O*f  
quickSort(data,0,data.length-1); ,6o tm  
} _xy[\X;9  
private void quickSort(int[] data,int i,int j){ "rfBYl`  
int pivotIndex=(i+j)/2; <;uM/vS i  
file://swap ; .b^&h  
SortUtil.swap(data,pivotIndex,j); &aa3BgxyE  
{;6a_L@q;|  
int k=partition(data,i-1,j,data[j]); ;}M&fXFp"|  
SortUtil.swap(data,k,j); Z[0/x.pp$  
if((k-i)>1) quickSort(data,i,k-1); +n$ruoRJh  
if((j-k)>1) quickSort(data,k+1,j); ( uG; Q  
<_]W1V:0  
} .$ YYN/+W  
/** M?o_J4  
* @param data `~=NBN=tiL  
* @param i zbGZ\pz  
* @param j ;lS sy  
* @return L)1\=[Ov  
*/ k8l7.e*  
private int partition(int[] data, int l, int r,int pivot) { -F 9 xPw  
do{ F/[m.!Eo  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7 toIbC#  
SortUtil.swap(data,l,r); Rg+# (y  
} d+6q% U  
while(l SortUtil.swap(data,l,r); PHUeN]s#  
return l; {wgq>cb  
} JT~Dr KI_  
TB=_r(:l+  
} a5/Dz&>j6  
G]{^.5  
改进后的快速排序: >>"@ 0tO  
L"NfOST3'R  
package org.rut.util.algorithm.support; >yVp1Se  
lR9uD9Dr  
import org.rut.util.algorithm.SortUtil; n,LM"N:   
kP5G}Bp  
/** NFC/4  
* @author treeroot C\vOxBAB  
* @since 2006-2-2 ,yvS c  
* @version 1.0 t OxH9  
*/ q~Al[`K  
public class ImprovedQuickSort implements SortUtil.Sort { FMhuCl2  
)4.-6F7U?  
private static int MAX_STACK_SIZE=4096; ^FVmP d*1  
private static int THRESHOLD=10; N2Ysi$  
/* (non-Javadoc) 71ab&V il  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b'z\|jY  
*/ XHOS"o$y  
public void sort(int[] data) { `%EcQ}Nr  
int[] stack=new int[MAX_STACK_SIZE]; *-uzsq.W  
p )]x,F  
int top=-1; & JJ*?Dl  
int pivot; _ n1:v~  
int pivotIndex,l,r; r. (}  
7$t['2j3  
stack[++top]=0; wA)n ryXV  
stack[++top]=data.length-1; #0\* 8 6  
k#7A@Vb  
while(top>0){ [7g-M/jvY  
int j=stack[top--]; FC||6vJth  
int i=stack[top--]; N9y+P sh  
+_u~Np  
pivotIndex=(i+j)/2; ^4'!B +}F  
pivot=data[pivotIndex]; %Pj}  
~*UY[!+4^=  
SortUtil.swap(data,pivotIndex,j); ao[yHcAs  
g}uSIv^  
file://partition >"|t*k S  
l=i-1; B#35)QI  
r=j; $$< I}eMd>  
do{ ):}A Quy]  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); j)Kd'Va  
SortUtil.swap(data,l,r); [1ClZ~f  
} %tZrP$DQ  
while(l SortUtil.swap(data,l,r); X#K;(.},h  
SortUtil.swap(data,l,j); %DA`.Z9 #  
9sd}Z,l  
if((l-i)>THRESHOLD){ wO`G_!W9  
stack[++top]=i; rk@qcQR  
stack[++top]=l-1; 8xG"hJR  
} e=eip?p  
if((j-l)>THRESHOLD){ i}i >ho-8  
stack[++top]=l+1; 9?~6{!m_9  
stack[++top]=j; rLA-q||  
} a2kAZCQ  
98 ]pkqp4  
} Yx,7e(AI`  
file://new InsertSort().sort(data);  Y(2Z<d  
insertSort(data); Jf\`?g3#  
} (0.JoeA`y  
/** V<;_wO^  
* @param data 0IA' 5)  
*/ L/I ] NA!U  
private void insertSort(int[] data) { 5J1a8RBR  
int temp; +Ar4X-A{y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K[ S>EITr  
} 81!;Wt(?  
} o)x&|0_  
} }gB^C3b6  
;ceg:-Zqo  
} l~Ka(*[!U  
$J,$_O6  
归并排序: J&}1=s  
01uj-!D$@  
package org.rut.util.algorithm.support; 'Ffvd{+:8  
~l{Qz0&  
import org.rut.util.algorithm.SortUtil; W}}ZP];  
{fX~%%c"  
/** nZc6 *jiz  
* @author treeroot m_BpY9c]5  
* @since 2006-2-2 7Kb&BF|Q  
* @version 1.0 U>m{B|H  
*/ ]=I2:Rb  
public class MergeSort implements SortUtil.Sort{ ,dw\y/dn  
_#+l?\u  
/* (non-Javadoc) 1uR@ZK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3d7A/7S  
*/ W1t_P&i  
public void sort(int[] data) { F:[[@~z  
int[] temp=new int[data.length]; ]` A*7  
mergeSort(data,temp,0,data.length-1); UQ7La 7"  
} n<<arO"cv  
?~#[ cx  
private void mergeSort(int[] data,int[] temp,int l,int r){ %g3QE:(2@q  
int mid=(l+r)/2; ]KXyi;n2  
if(l==r) return ; NYs<`6P:Y  
mergeSort(data,temp,l,mid); o{n#f?EA  
mergeSort(data,temp,mid+1,r); ~ _tK.m3  
for(int i=l;i<=r;i++){ }J92TV  
temp=data; 4mEJu  
} )  LTV+?  
int i1=l; l @@pXg3  
int i2=mid+1; ^P/OHuDL  
for(int cur=l;cur<=r;cur++){  w}t}Sh  
if(i1==mid+1) (x.qyYEoI  
data[cur]=temp[i2++]; Fi\) ka\u  
else if(i2>r) |ITb1O`_P  
data[cur]=temp[i1++]; x!pd50-   
else if(temp[i1] data[cur]=temp[i1++]; )1R[X!KQ7  
else Tyb'p9  
data[cur]=temp[i2++]; riaL[4c  
} g}K/ba'  
} $=^}J 6  
/h`gQyGuY  
} E?|NYu#I6  
X%fLV(  
改进后的归并排序: S1'?"zAmd  
a|3+AWL%  
package org.rut.util.algorithm.support; >9#) obw  
Zy:q)'D=  
import org.rut.util.algorithm.SortUtil; c'Z)uquvP  
O&~ @ior  
/** nmE H/a  
* @author treeroot R%)F9P$o  
* @since 2006-2-2 ^8 -,S[az  
* @version 1.0 f;l}Z|dok6  
*/ {)!ua7GF0H  
public class ImprovedMergeSort implements SortUtil.Sort { 9L4;#cy  
{.o4U0+  
private static final int THRESHOLD = 10; >c5   
^gpd '*b  
/* 7v0VZ(UR  
* (non-Javadoc) eoQt87VCU  
* ^nOh 8L;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T?.l_"%%d  
*/ D+jvF  
public void sort(int[] data) { :P+7ti@  
int[] temp=new int[data.length]; 0JR)-*  
mergeSort(data,temp,0,data.length-1); ?A r}QN  
} j> dZ26 >N  
lb=fS%  
private void mergeSort(int[] data, int[] temp, int l, int r) { g}a+%Obb  
int i, j, k; OPqhdqo  
int mid = (l + r) / 2; ]iFW>N*a  
if (l == r) D@[#7:rHL  
return; @ptrF pSL  
if ((mid - l) >= THRESHOLD) [O!/hppN  
mergeSort(data, temp, l, mid); ?6x&A t  
else yGC HWP  
insertSort(data, l, mid - l + 1); }NdLd!  
if ((r - mid) > THRESHOLD) |o(te  
mergeSort(data, temp, mid + 1, r); f.oY:3h:  
else xUa9>=JU{  
insertSort(data, mid + 1, r - mid); UCFFF%  
oblw!)  
for (i = l; i <= mid; i++) { n:s _2h(u  
temp = data; m c@Z+t'  
} 1Ak0A6E  
for (j = 1; j <= r - mid; j++) { een62-`  
temp[r - j + 1] = data[j + mid]; ^( 7l!  
} Fy$ C._C$  
int a = temp[l]; T<y fpUzX  
int b = temp[r]; ~G6xk/+n-m  
for (i = l, j = r, k = l; k <= r; k++) { /6n"$qon6  
if (a < b) { @$$ J}~{  
data[k] = temp[i++]; gf4Hq&Rf  
a = temp; qvhG ^b0h  
} else { Ep')@7^n  
data[k] = temp[j--]; \RFA?PuY  
b = temp[j]; /; 21?o  
} &f?JtpB  
} NxK.q)tj6  
} rfSEL 57'  
29|nt1Z  
/** gS]  
* @param data 7M?Sndp$  
* @param l _@y9=e  
* @param i ;>X;cZMd  
*/ 9fM=5  
private void insertSort(int[] data, int start, int len) { j-FMWEp  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); JPgFTr  
} #E<~WpP  
} Cgf4E{\U!  
} \lDh"  
} ?A*<Z%}1?  
A4;~+L:M  
堆排序: )2Y]A^Y   
A L |,\s  
package org.rut.util.algorithm.support; w^3S6lK  
< mFU T  
import org.rut.util.algorithm.SortUtil; 7nW <kA  
^d(gC%+!u  
/** .O+,1&D5  
* @author treeroot &/otoAr(  
* @since 2006-2-2 g0;6}n  
* @version 1.0 j^f54Ky.  
*/ Gs04)KJm<  
public class HeapSort implements SortUtil.Sort{ YuzVh9jTI  
{ W5 _KX  
/* (non-Javadoc) R7FI{ A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u-V( 2?  
*/ _l,-S Qgj  
public void sort(int[] data) { mOLz(0  
MaxHeap h=new MaxHeap(); -ni@+Dy  
h.init(data); j4=\MK  
for(int i=0;i h.remove(); ;LKYA?=/V  
System.arraycopy(h.queue,1,data,0,data.length); Y2g%{keo  
} QNXS.!\P  
W3%RB[s-  
private static class MaxHeap{ ,&Zk63V  
U2Ky4UFm  
void init(int[] data){ .&>3nu  
this.queue=new int[data.length+1]; >f|0# *  
for(int i=0;i queue[++size]=data; [w+1<ou;j  
fixUp(size); u{l4O1k/c  
} ,k9.1kjO*)  
} i?mUQ'H  
7 VYhRC-  
private int size=0; ps/|^8aGZ  
,t'"3<^Jg  
private int[] queue; yy3`E}vX7  
yaHkWkl =  
public int get() { ?TmVLny  
return queue[1]; %?S[{ 4A&  
} tWTC'Gx-J  
\3F)M`g  
public void remove() { E^pn-rB  
SortUtil.swap(queue,1,size--); } R hSt]  
fixDown(1); y4&x`|tv  
} m-cw5lW  
file://fixdown t [G7&ovj  
private void fixDown(int k) { 9p4SxMMO  
int j; vP%:\u:{  
while ((j = k << 1) <= size) { #9qX:*>h   
if (j < size %26amp;%26amp; queue[j] j++; f&$$*a  
if (queue[k]>queue[j]) file://不用交换 -7 Kstc-  
break; +p]@b  
SortUtil.swap(queue,j,k); 'S=eW_ 0/  
k = j; w2r* $Q  
} ,1v FX$  
} 2xBh  
private void fixUp(int k) { 7p{uRSE4._  
while (k > 1) { ]2[\E~^KU  
int j = k >> 1; B.gEV*@  
if (queue[j]>queue[k]) ;L%\[H>G  
break; ;9Wimf]G,E  
SortUtil.swap(queue,j,k); IiX2O(*ZE  
k = j; `)BZk[64  
} 9wdX#=I  
} 0p\Kf(|E*6  
'RV wxd  
} {OS[0LB  
'BVI^H4  
} 5T'v iG}%  
b%VZPKA;  
SortUtil: ,}I m^~5  
|n(b>.X  
package org.rut.util.algorithm; #!r>3W&  
/c7jL4oD  
import org.rut.util.algorithm.support.BubbleSort; (^<skx>  
import org.rut.util.algorithm.support.HeapSort; =#&+w[4?&.  
import org.rut.util.algorithm.support.ImprovedMergeSort; N)KN!!  
import org.rut.util.algorithm.support.ImprovedQuickSort; kn&BGYt  
import org.rut.util.algorithm.support.InsertSort; ;YBk.} %  
import org.rut.util.algorithm.support.MergeSort; 9h6siK(F  
import org.rut.util.algorithm.support.QuickSort; `vf]C'  
import org.rut.util.algorithm.support.SelectionSort; C2DAsSw  
import org.rut.util.algorithm.support.ShellSort; Kzwe36O;?  
yv$hIU2X  
/** $5Rx>$~+d  
* @author treeroot B? XK;*])  
* @since 2006-2-2 )31xl6@  
* @version 1.0 C7&L9k~jf  
*/ &.Yu%=}  
public class SortUtil { #X?E#^6?E  
public final static int INSERT = 1; $bZ5@)E  
public final static int BUBBLE = 2; *I k/Vu%;  
public final static int SELECTION = 3; |"eC0u  
public final static int SHELL = 4; :G5O_T$  
public final static int QUICK = 5; 5mm&l+N)  
public final static int IMPROVED_QUICK = 6; ~O3VX75f  
public final static int MERGE = 7; SkU9iW(k  
public final static int IMPROVED_MERGE = 8; N#X* 0i"  
public final static int HEAP = 9; i> {0h3Y  
(>*L-&-  
public static void sort(int[] data) { &uf|Le4  
sort(data, IMPROVED_QUICK); x5M+\?I<2  
} Sa:;j4  
private static String[] name={ 5tY/d=\k  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5hDPX \  
}; TR'_v[uK3  
d"lk"R  
private static Sort[] impl=new Sort[]{ veS) j?4  
new InsertSort(), "R% RI( y{  
new BubbleSort(), xhMAWFg|  
new SelectionSort(), o9OCgP`Y  
new ShellSort(), NezE]'}  
new QuickSort(), 9]I{GyH  
new ImprovedQuickSort(), mCQ:< #  
new MergeSort(), ~/2OK!M  
new ImprovedMergeSort(), B}N1}i+  
new HeapSort() r( zn1;zl  
}; t&_X{!1X"w  
FY/F}C,o  
public static String toString(int algorithm){ U8<C4  
return name[algorithm-1]; s/P+?8'9  
} cSmy M~[  
H9WXp&  
public static void sort(int[] data, int algorithm) { e&NJj:Ph*  
impl[algorithm-1].sort(data); GX*9R>  
} r<Q0zKW!jN  
pK0@H"$8  
public static interface Sort { LFvZ 7M\\  
public void sort(int[] data); " #w%sG^_  
} +IlQZwm~  
-<(RYMk*)  
public static void swap(int[] data, int i, int j) { df&.!7_R`  
int temp = data; H,LJ$ py  
data = data[j]; U~oGg$  
data[j] = temp; [Y^h)k{-$  
} }gd'pgN"t  
} q&LCMnv"P  
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3+5=?,请输入中文答案:八 正确答案:八