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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。 ChryJRuwv5  
插入排序: bSwWszd~  
B-.v0R`5  
package org.rut.util.algorithm.support; X#a`K]!B  
57{oh")  
import org.rut.util.algorithm.SortUtil; b<I9 MR  
/** UnDgu4#R`A  
* @author treeroot DQ.v+C,  
* @since 2006-2-2 hw_JDv+  
* @version 1.0 r5&I? 0   
*/ \b'x t  
public class InsertSort implements SortUtil.Sort{ NBh%:tu7M  
u.pxz8  
/* (non-Javadoc) xynw8;Y ,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0XwHP{XaO  
*/ jt~Qu-  
public void sort(int[] data) { 5pNY)>]t=  
int temp; '+'CbWgY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g3@Rl2yQJ  
} 3b'tx!tFN  
} ? ]sM8Bd}  
} 9n]|PEoAB  
~s Qjl]  
} ?zJpD8e  
hli|B+:m"  
冒泡排序: e)nimq {6  
*x~xWg9^  
package org.rut.util.algorithm.support; 1RLY $M  
WlB' YL-`g  
import org.rut.util.algorithm.SortUtil; (LvS :?T}  
$ZPX]2D4B#  
/** ;wiao(t>4N  
* @author treeroot ~pk(L[G  
* @since 2006-2-2 :H6FPV78  
* @version 1.0 HC {XX>F^  
*/ +^aFs S  
public class BubbleSort implements SortUtil.Sort{ $VG*q  
B(k=oXDF  
/* (non-Javadoc) wmNHT _  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yw3oJf&  
*/ |9xI_(+{kP  
public void sort(int[] data) { z_;3H,z`  
int temp; "; [ iZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 87!C@XlK_  
if(data[j] SortUtil.swap(data,j,j-1); }g +;y  
} :qhpL-ER  
} 4:3rc7_ 1  
} Z.L?1V8Q1  
} foF19_2 ,  
>t,M  
} %1 KbS [  
?)Nj c&G  
选择排序: djQv[Vc {  
]e:/"   
package org.rut.util.algorithm.support; E! /[gZ  
%OR|^M  
import org.rut.util.algorithm.SortUtil; $lIWd  
idc`p?XP  
/** _Jz8{` "  
* @author treeroot aeyNdMk -  
* @since 2006-2-2 D'<VYl"/  
* @version 1.0 l@j.hTO<  
*/ vg Ipj3u  
public class SelectionSort implements SortUtil.Sort { A*h{Lsx;  
i LBvGZ<9  
/* +.B<Hd  
* (non-Javadoc) t9gfU5?  
* :pX`?Ew`g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sRVIH A ,  
*/ C-eA8pYY/  
public void sort(int[] data) { -Ue$T{;RoH  
int temp; \mM<\-'p  
for (int i = 0; i < data.length; i++) { |rw%FM{F  
int lowIndex = i; N(6|yZ<J3M  
for (int j = data.length - 1; j > i; j--) { /gcEw!JS  
if (data[j] < data[lowIndex]) { !2\ r LN  
lowIndex = j; gyHHoZc3  
} :nHKl  
} /StTb,  
SortUtil.swap(data,i,lowIndex); 5FVndMM#y  
} p=GWq(S6  
} TQX)?^Ft  
B 3m_D"?  
} 5[l8y ,  
a ?} .Fs  
Shell排序: zIC;7 5#  
E9\vA*a  
package org.rut.util.algorithm.support; ' #NcZy  
k- V,~c  
import org.rut.util.algorithm.SortUtil; ~9^)wCM+  
<P ,~eX(r  
/** @[<nQZw:  
* @author treeroot s..lK "b  
* @since 2006-2-2 c@[:V  
* @version 1.0 WtQ8X|\`  
*/ z't? ?6  
public class ShellSort implements SortUtil.Sort{ gXT9 r' k  
.xzEAu;  
/* (non-Javadoc) {u{@ jp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @}_WE,r  
*/ |@?%Ct  
public void sort(int[] data) { !?f5>Bl  
for(int i=data.length/2;i>2;i/=2){ _EnwME {@  
for(int j=0;j insertSort(data,j,i); C$Lu]pIL*  
} r0t^g9K0  
} (2ur5uk+  
insertSort(data,0,1); H~eRT1  
} !IU.a90V  
o56`  
/** cUqn<Z<n  
* @param data ,jA)wJ  
* @param j H>Q%"|  
* @param i &*G<a3 Q  
*/ j.~!dh$mg  
private void insertSort(int[] data, int start, int inc) { (Q[fS:U  
int temp; 76tdJ!4Z  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \y6OUM2y  
} `.x$7!zLC  
} .Xm(D>>k  
} ~AY N  
sb:d>6  
} Y3kA?p0  
dca ;'$  
快速排序: ?1L.:CS  
 [=O/1T  
package org.rut.util.algorithm.support; )}Q(Tl\$  
Gir#"5F  
import org.rut.util.algorithm.SortUtil; =U[3PC-N @  
i 8!zu!-0  
/** (npj_s!.C)  
* @author treeroot 4%WzIzRb  
* @since 2006-2-2 hPq%L c  
* @version 1.0 kdz=ltw  
*/ IcP)FB 4  
public class QuickSort implements SortUtil.Sort{ 4=uhh  
64Lx -avf  
/* (non-Javadoc) R [H+qr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }'r[m5T  
*/ !-s!f&_  
public void sort(int[] data) { ,1'4o3  
quickSort(data,0,data.length-1); pZ`|iLNl-  
} jF`BjxrG  
private void quickSort(int[] data,int i,int j){ h%WE=\,Qp  
int pivotIndex=(i+j)/2; VxP&j0M>  
file://swap %0#1t 5g  
SortUtil.swap(data,pivotIndex,j); A5,t+8`aci  
*5tO0_L  
int k=partition(data,i-1,j,data[j]); \tx bhWN  
SortUtil.swap(data,k,j); jq'!UN{  
if((k-i)>1) quickSort(data,i,k-1); HW&%T7 a  
if((j-k)>1) quickSort(data,k+1,j); &DqE{bBd!  
dd2[yKC`  
} Y|8v O  
/** \xg]oKbn  
* @param data "5cM54Z0  
* @param i k6`6Mjbc  
* @param j L lqM c  
* @return (F7(^.MG  
*/ j4=(H:c~E  
private int partition(int[] data, int l, int r,int pivot) { 3+ >G#W~  
do{ hF2IW{=!  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); dEBcfya  
SortUtil.swap(data,l,r); 2VW}9O  
} Kn+S,1r  
while(l SortUtil.swap(data,l,r); "CiTa>x  
return l; +_-bJo2a  
} :akT 'q#  
S"9zc ,]  
} "#mBcQ;QLV  
S9HwIH\m  
改进后的快速排序: }68i[v9Njk  
Nn>'^KZNG  
package org.rut.util.algorithm.support; =PGs{?+&O  
c1X1+b,  
import org.rut.util.algorithm.SortUtil; $mF_,|  
t 6v/sZ{F  
/** ]v+31vdf:O  
* @author treeroot <dyewy*.L  
* @since 2006-2-2 vb9OonE2  
* @version 1.0 x8GJY~:SW  
*/ oyo(1 >  
public class ImprovedQuickSort implements SortUtil.Sort { [qsEUc+Z.'  
o\vBOp?hj  
private static int MAX_STACK_SIZE=4096; \EseGgd21  
private static int THRESHOLD=10; ETs>`#`6o  
/* (non-Javadoc) r$)w7Gk<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ">?vir^  
*/ <\?wAjc,  
public void sort(int[] data) { h gJ[LU|>  
int[] stack=new int[MAX_STACK_SIZE]; |>@W ]CX[  
@{Gncy|  
int top=-1; E 7-@&=]v  
int pivot; Ov<NsNX]  
int pivotIndex,l,r; OR[{PU=X  
!!Z?[rj  
stack[++top]=0; dz Zb  
stack[++top]=data.length-1; `~eUee3b.~  
QeF3qXI  
while(top>0){ FVh U^  
int j=stack[top--]; .F+@B\A<  
int i=stack[top--]; uw lr9nB  
iiK]l   
pivotIndex=(i+j)/2; Sna4wkbS  
pivot=data[pivotIndex]; }1IpON  
`({T]@]V  
SortUtil.swap(data,pivotIndex,j); LR" 9D  
YuB+k^  
file://partition S*yjee<@  
l=i-1; BT}&Y6  
r=j; eYx Kp!f  
do{ tBpC: SG  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -_$$Te  
SortUtil.swap(data,l,r); (5\N B0  
} tDUwy^j  
while(l SortUtil.swap(data,l,r); O$4yAaD X  
SortUtil.swap(data,l,j); >LDhU%bH  
?7{H|sI  
if((l-i)>THRESHOLD){ eF2|Wjl``;  
stack[++top]=i; sH\5/'?  
stack[++top]=l-1; o.I6ulY8  
} l&?ii68/  
if((j-l)>THRESHOLD){ )=Jk@yj8x  
stack[++top]=l+1; y( y8+ZT  
stack[++top]=j; B#9{-t3Vf  
} @IXsy  
->N8#XH2=  
} zXRlo]  
file://new InsertSort().sort(data); /hO1QT}xd  
insertSort(data); 6Cp]NbNrq  
} O$cHZs$  
/** ~K@'+5Pc  
* @param data 2WG>, 4W2  
*/ .YuJJJv  
private void insertSort(int[] data) { "Wx]RN:  
int temp; ~g.$|^,.O/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kBN+4Dr/$  
} }V\N16f  
} m^qBx A  
} H= X|h)  
5 (A5Y-B  
} cp h:y  
NFv>B>  
归并排序: n'emN Ra  
0V?F'<qy  
package org.rut.util.algorithm.support; 8g7<KKw  
-44&#l^}_u  
import org.rut.util.algorithm.SortUtil; j)q\9#sI/(  
&4_qF^9J  
/** i&n'N8D@  
* @author treeroot /t(C>$ }p  
* @since 2006-2-2 &iV{:)L  
* @version 1.0 dUsx vho  
*/ h yv2SxP*  
public class MergeSort implements SortUtil.Sort{ 2PG [7u^  
"Iix )Ue  
/* (non-Javadoc) g&{9VK6.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =z8f]/k*>  
*/ i7ly[6{^pr  
public void sort(int[] data) { VH:]@x//{  
int[] temp=new int[data.length]; yDGVrc'  
mergeSort(data,temp,0,data.length-1); GAAm0;  
} {^N[("`  
P67o{EdK  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5scEc,JCi  
int mid=(l+r)/2; AoyX\iqQ  
if(l==r) return ; * oybD=%4  
mergeSort(data,temp,l,mid); Qa.u Mq  
mergeSort(data,temp,mid+1,r); &y#r;L<9  
for(int i=l;i<=r;i++){ VJS8)oI~  
temp=data; YX#-nyK  
} I"`M@ %  
int i1=l; 9VbOQ{8  
int i2=mid+1; /Ju;MeE9  
for(int cur=l;cur<=r;cur++){ zLJ/5&  
if(i1==mid+1) 1m.W<  
data[cur]=temp[i2++]; 3g6j?yYqb  
else if(i2>r) ()H:UvM=t  
data[cur]=temp[i1++]; Km^&<3ch#  
else if(temp[i1] data[cur]=temp[i1++]; *2GEnAZb7n  
else J4\qEO  
data[cur]=temp[i2++]; h5K$mA5  
} CoA6  
} Y5j]Z^^v  
xL" |)A =  
} I&YSQK:b  
:GJ &_YHf  
改进后的归并排序: F,'exuZ  
b3VS\[p  
package org.rut.util.algorithm.support; -! K-Htb-  
uAWM \?  
import org.rut.util.algorithm.SortUtil; =xS+5(  
LupkrxV  
/** )[Yv?>ib  
* @author treeroot 2rZx Sg  
* @since 2006-2-2 ,tg0L$qC  
* @version 1.0 {+@bZ}57  
*/ ~ _!F01s  
public class ImprovedMergeSort implements SortUtil.Sort { L/z),#  
+U3m#Y)k  
private static final int THRESHOLD = 10; .e3+s*  
S1?-I_t+]  
/* 2J;kSh1,L  
* (non-Javadoc) M^]cM(swK5  
* x_dy~(*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nj 00W1  
*/ (V HL{rj  
public void sort(int[] data) { y(xJT j  
int[] temp=new int[data.length]; jfqopiSi  
mergeSort(data,temp,0,data.length-1); ~appY Av  
} /QJ?bD#a  
z+>}RT]  
private void mergeSort(int[] data, int[] temp, int l, int r) { WH \)) y-  
int i, j, k; VzKW:St  
int mid = (l + r) / 2; 10U9ZC  
if (l == r) Qg<(u?7N  
return; .?hP7;hhI  
if ((mid - l) >= THRESHOLD) 1&U>,;]*  
mergeSort(data, temp, l, mid); $-*!pRaVU  
else "%x<ttLl  
insertSort(data, l, mid - l + 1); @#-q^}3  
if ((r - mid) > THRESHOLD) <(-hx+^  
mergeSort(data, temp, mid + 1, r); /n8B,-Z5s5  
else '3 ^+{=q  
insertSort(data, mid + 1, r - mid); yiA<,!;4P  
_:"<[ >9  
for (i = l; i <= mid; i++) { ,xxR\}  
temp = data; 9\DQ>V TQ  
} `9b7>Nn<  
for (j = 1; j <= r - mid; j++) { fP `b>]N_  
temp[r - j + 1] = data[j + mid]; 1N>|yQz  
} +o51x'Ld*  
int a = temp[l]; IyLx0[:U  
int b = temp[r]; @$+ecaVW  
for (i = l, j = r, k = l; k <= r; k++) { qhz]Wm P   
if (a < b) { QD>"]ap,o  
data[k] = temp[i++]; >:|q&|x-  
a = temp; <|Pun8j  
} else { ez6EjUk  
data[k] = temp[j--]; r'*}TM'8  
b = temp[j]; 1[vi.  
} oTuOw|[  
} .?Gd'Lp  
} jav#f{'  
1wP-  
/** #"5 Dk#@  
* @param data 5EebPXBzB  
* @param l $+I;oHWI  
* @param i ^~A>8CQOU  
*/ bG(3^"dS  
private void insertSort(int[] data, int start, int len) { AlIpsJ[UU  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <N9[?g)  
} 5x>}O3Q_  
} gE?| _x#  
} ?n ZY)  
} BFOq8}fX2  
jE/AA!DC#  
堆排序: }-sdov<<  
+qwjbA+  
package org.rut.util.algorithm.support; jWE :ek*  
& J2M1z%  
import org.rut.util.algorithm.SortUtil; cu/5$m?xx  
SK#(#OQoh  
/** *9{Z$IA9w  
* @author treeroot 7F{3*`/6  
* @since 2006-2-2 '5|h)Q5  
* @version 1.0 | ]X  
*/ k<\$OoOZ  
public class HeapSort implements SortUtil.Sort{ la+[bm< v  
SrK)t.oK  
/* (non-Javadoc) 8 {X"h#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3^6 d]f  
*/ ikSt"}/hd  
public void sort(int[] data) { SV~~Q_U9  
MaxHeap h=new MaxHeap(); PJL=$gBgKk  
h.init(data); Rw:*'1  
for(int i=0;i h.remove(); HEM9E&rL  
System.arraycopy(h.queue,1,data,0,data.length); } =]M2}  
} 3S}Pm2D2  
uvG]1m#  
private static class MaxHeap{ F ;2w1S^  
L=sYLC6d  
void init(int[] data){ ~"kb7Fxp  
this.queue=new int[data.length+1]; 7*Ej. HK  
for(int i=0;i queue[++size]=data;  N#a$t&  
fixUp(size); D5*q7A6  
} LBa[:j2  
} 3 C<L  
uW} s)j.  
private int size=0; !*%WuyCgr4  
ZP\-T*)l$  
private int[] queue; /VN f{p  
-K3^BZ HI  
public int get() { ^>hWy D  
return queue[1]; lUvpszH=  
} )j0TeE1R  
In<n&ib  
public void remove() { m~-K[+ya`D  
SortUtil.swap(queue,1,size--); m1M t#@,$  
fixDown(1); &RnTzqv  
} ZWKg9%y7  
file://fixdown ]X ?7ZI^  
private void fixDown(int k) { GfmI<{da  
int j; ei[j1F  
while ((j = k << 1) <= size) { /*X2c6<d  
if (j < size %26amp;%26amp; queue[j] j++; zM(vr"U   
if (queue[k]>queue[j]) file://不用交换 =aBctd:eX`  
break; ne_TIwfw-  
SortUtil.swap(queue,j,k); t~#zMUfac  
k = j; yU-e3O7L  
} sWc*5Rt  
} \Yc'~2n  
private void fixUp(int k) { 0,89H4  
while (k > 1) { V#S9H!hm$  
int j = k >> 1; \(^nSy&N  
if (queue[j]>queue[k]) m;GbLncA  
break; 8)10o,#L  
SortUtil.swap(queue,j,k); rFj-kojg  
k = j; vPTM  
} |w<H!lGe!$  
} 2;DuHO1  
~^r29'3  
} =06gj)8  
UVd7 JGR  
} U<_3^  
J:V6  
SortUtil: 5',8 ziJQ  
)W;o<:x3  
package org.rut.util.algorithm; 4;0lvDD  
5n9B?T8C  
import org.rut.util.algorithm.support.BubbleSort; ]);%wy{Ho  
import org.rut.util.algorithm.support.HeapSort; Hn%xDJ'  
import org.rut.util.algorithm.support.ImprovedMergeSort; (2^gVz=j  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2[O&NdP\Zk  
import org.rut.util.algorithm.support.InsertSort; /2=#t-p+  
import org.rut.util.algorithm.support.MergeSort; GycSwQ ,  
import org.rut.util.algorithm.support.QuickSort; 3@M|m<_R$  
import org.rut.util.algorithm.support.SelectionSort; { + Zd*)M[  
import org.rut.util.algorithm.support.ShellSort; Pa V@aM~3  
`\#B18eU  
/** ZK@N5/H(  
* @author treeroot j/f?"VEr  
* @since 2006-2-2 [d1mL JAR  
* @version 1.0 hPUYyjXPB  
*/ "NXB$a!:  
public class SortUtil { IDB+%xl#S  
public final static int INSERT = 1; 2ZG5<"DQ"  
public final static int BUBBLE = 2; [f1 (`<  
public final static int SELECTION = 3; ;U.hxh;+  
public final static int SHELL = 4; d(:8M  
public final static int QUICK = 5; 4,CXJ2  
public final static int IMPROVED_QUICK = 6; }dWq=)*  
public final static int MERGE = 7; o7sT=x9  
public final static int IMPROVED_MERGE = 8; ToXki,  
public final static int HEAP = 9; MbZJ;,e?  
N D(/uyI  
public static void sort(int[] data) { di6QVRj1  
sort(data, IMPROVED_QUICK); XBb~\p3y  
} KLitg6&P  
private static String[] name={ 8&?s#5zA  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" i]6`LqlO  
}; ->g*</  
'%dfz K*Z  
private static Sort[] impl=new Sort[]{ x,|hU@h  
new InsertSort(), #><.oreXq  
new BubbleSort(), V-Sd[  
new SelectionSort(), &U5{Hm9Ynr  
new ShellSort(), ^Eb.:}!D6  
new QuickSort(), $o0 iLFIX/  
new ImprovedQuickSort(), J;{N72  
new MergeSort(), Ay5i+)MD  
new ImprovedMergeSort(), :y%/u%L  
new HeapSort() *n 6s.$p)%  
}; &eCa0s?mI  
)4<__|52"1  
public static String toString(int algorithm){ W&& ;:Fr  
return name[algorithm-1]; $Q96,rb}k;  
} HkUWehVm  
pgI^4h  
public static void sort(int[] data, int algorithm) { q_g+Jf P-D  
impl[algorithm-1].sort(data); )4gJd? 8R  
} 6@{(;~r  
VEqS;~[  
public static interface Sort { }L+L"l&  
public void sort(int[] data); A+"ia1p,}  
} Sa?ksD2IaB  
g*e   
public static void swap(int[] data, int i, int j) { 7hlO#PYZ  
int temp = data; Jq&uF*!  
data = data[j]; i|w81p^o  
data[j] = temp; (e!0]Io@  
} J'SZ  
} 4'g;TI^  
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