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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。 u/W{JPlL  
插入排序: Xf;!w:u  
G:e=9qTf  
package org.rut.util.algorithm.support; yl>^QMmo  
-, +o*BP  
import org.rut.util.algorithm.SortUtil; Yh]a4l0  
/** Dml?.-Uv<  
* @author treeroot 9?Bh8%$  
* @since 2006-2-2 hEjvtfM9\-  
* @version 1.0 \WE/#To  
*/ 0faf4LzU!  
public class InsertSort implements SortUtil.Sort{ NL.3qx  
$idToOkw  
/* (non-Javadoc) ]Z[3 \~?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zDYJe_m ~  
*/ =F[M>o  
public void sort(int[] data) { 7NEOaX(J9  
int temp; azmeJpC  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OC5oxL2HTe  
} 0084`&Ki  
} B)/&xQu  
} J|xXo  
7_Vd%<:  
} ~%\vX  
;R >>,&g  
冒泡排序: tLJ 7tnB  
>%"TrAt  
package org.rut.util.algorithm.support; p YCMJK-H  
CMC p7- v  
import org.rut.util.algorithm.SortUtil; GGHMpQ   
<c@dE  
/** 4PSbr$  
* @author treeroot TFbc@rfB  
* @since 2006-2-2 k&yBB%g  
* @version 1.0 a\-5tYo`u  
*/ tQj=m_  
public class BubbleSort implements SortUtil.Sort{ !o'a]8  
9on$0  
/* (non-Javadoc) >o"s1* {  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xD7Y"%Pbx  
*/ KXTk.\c  
public void sort(int[] data) { L^^f.w#m  
int temp; G} [$M"}  
for(int i=0;i for(int j=data.length-1;j>i;j--){ G]l/L\{  
if(data[j] SortUtil.swap(data,j,j-1); |x.[*'X@  
} d >M0:  
} XPYf1H  
} H|s Iw:  
} W*H%\Y:N  
j.Y!E<e4]  
} =[4C[s  
(|W6p%(  
选择排序: lS;S:- -F  
Gyu =}  
package org.rut.util.algorithm.support; L_Z`UhD3{  
3Mh_ &%!O  
import org.rut.util.algorithm.SortUtil; o)\EfPT  
[Qkj}  
/** &hpznIN  
* @author treeroot D6_#r=08  
* @since 2006-2-2 Jv2V@6a(  
* @version 1.0 0Q%I[f8  
*/ eJOo~HIWQ  
public class SelectionSort implements SortUtil.Sort { uF,%N   
t2ui9:g4j  
/*  ">|L<  
* (non-Javadoc) Qm3 RXO  
* };(2 na  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o) eW5s,6  
*/ {KqW<X6Hp  
public void sort(int[] data) { ld~*w  
int temp; N}bZdE9F  
for (int i = 0; i < data.length; i++) { How:_ Hj  
int lowIndex = i; "=f,4Zbj  
for (int j = data.length - 1; j > i; j--) { gO~>*q &  
if (data[j] < data[lowIndex]) { |b Z 58{}  
lowIndex = j; Y0'~u+KS`5  
} }LBrk0]  
} UL8"{-`_\  
SortUtil.swap(data,i,lowIndex); "(F:'J} X  
} qB3& F pgW  
} Y$q--JA  
K<ldl.  
} 0J)VEMC  
:fG9p`  
Shell排序: 2\}6b4  
Z;U\h2TY  
package org.rut.util.algorithm.support; h" YA>_1  
b#e|#!Je  
import org.rut.util.algorithm.SortUtil; LrfyH"#!:  
QZ-6aq\sgp  
/** Rm.9`<Y  
* @author treeroot {7Ez7'SVV  
* @since 2006-2-2 ctC! b{S"@  
* @version 1.0 ,J-YfL^x6*  
*/ cRPy5['E  
public class ShellSort implements SortUtil.Sort{ j|% C?N  
D2Kh+~l  
/* (non-Javadoc) `H;O! ty&d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C"}]PW  
*/ /Bnh%6#ab  
public void sort(int[] data) { & V/t0  
for(int i=data.length/2;i>2;i/=2){ 8-vNXvl  
for(int j=0;j insertSort(data,j,i); nG5:H.)  
} Se5jxV  
} LTY(6we-  
insertSort(data,0,1); hzk]kM/OC  
} iGeuO[ ^  
.!Q[kn0a  
/** -,xsUw4  
* @param data My >{;n=}  
* @param j r#.\5aQ t  
* @param i my3W[3#  
*/ == i?lbj  
private void insertSort(int[] data, int start, int inc) { dJg72?"ka  
int temp; Z"<tEOs/En  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tO QY./I  
} 'r`-J4icX  
} _q\w9gN  
} Q_R&+@ju  
(OK;*ZH+T@  
} G0h7MO%x  
i%_nH"h  
快速排序: n47v5.Wn  
 #`2*V  
package org.rut.util.algorithm.support; +l$BUX  
;,]Wtmu)7  
import org.rut.util.algorithm.SortUtil; 6cOm8#  
;i&'va$  
/** &mvC<_1n  
* @author treeroot a)8M'f_z  
* @since 2006-2-2 hbdM}"&]  
* @version 1.0 0~XZ  
*/ j1,ir  
public class QuickSort implements SortUtil.Sort{ l<nL8/5{<  
Vz&!N/0i  
/* (non-Javadoc) ygp NMq#?X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NvfQa6?;  
*/ 0l ]K%5#  
public void sort(int[] data) { >H?{=H+/#  
quickSort(data,0,data.length-1); rOy-6og  
} y| %rW  
private void quickSort(int[] data,int i,int j){ h|1 /Q (  
int pivotIndex=(i+j)/2; JuT~~Z  
file://swap 7l3sd5  
SortUtil.swap(data,pivotIndex,j); n P4DHb&5  
R oWGQney  
int k=partition(data,i-1,j,data[j]); pTJJ.#$CEF  
SortUtil.swap(data,k,j); i~6qOlLD-  
if((k-i)>1) quickSort(data,i,k-1); oos7x6  
if((j-k)>1) quickSort(data,k+1,j); j!P]xl0vOZ  
H6XlSj  
} tcf>9YsOr  
/** t|aBe7t7  
* @param data <Cw)S8t  
* @param i 4HK#]M>yz  
* @param j ceR zHq=  
* @return +H~})PeQ  
*/ l;SqjkN  
private int partition(int[] data, int l, int r,int pivot) { y\&`A:^[ A  
do{ 9q -9UC!g  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);  + >oA@z  
SortUtil.swap(data,l,r); 7,2bR  
} 0xM\+R~,  
while(l SortUtil.swap(data,l,r); 0"L_0 t:  
return l; 50.cMms  
} y++[:M  
2 -uL  
} Z;QbqMj  
X)|b_3Z  
改进后的快速排序: eZm,K'/!  
+mN]VO*y  
package org.rut.util.algorithm.support; $;dSM<r  
]I#yS=;  
import org.rut.util.algorithm.SortUtil; Tn qspS2;R  
C<\|4ERp  
/** G_~w0r#  
* @author treeroot g3(fhfR'RN  
* @since 2006-2-2 ayJKt03\O\  
* @version 1.0 T0ebW w  
*/ (P[:g  
public class ImprovedQuickSort implements SortUtil.Sort { h+! Ld^'c  
: YU_ \EV  
private static int MAX_STACK_SIZE=4096; N(W ;(7  
private static int THRESHOLD=10; [s4lSGh  
/* (non-Javadoc) Og?]y ^y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /bj D*rj  
*/ %_!YonRY|X  
public void sort(int[] data) { SAt{At  
int[] stack=new int[MAX_STACK_SIZE];  IR,`-  
?j{LE- (  
int top=-1; kmm1b (  
int pivot; UHYnl ]  
int pivotIndex,l,r; shOQ/  
d3# >\QCD9  
stack[++top]=0; hSq3LoHV  
stack[++top]=data.length-1; sV+/JDl  
`2y2Bk  
while(top>0){ brGUK PB  
int j=stack[top--]; !52]'yub  
int i=stack[top--]; R;gN^Yjk:  
CCOd4  
pivotIndex=(i+j)/2; 7Xi)[M?)#  
pivot=data[pivotIndex]; {mK=Vig  
~1Q$FgLk  
SortUtil.swap(data,pivotIndex,j); wG4=[d  
QcGyuS.B  
file://partition 1;R1Fj&  
l=i-1; :;S]jNy}j)  
r=j; $UAmUQg)}_  
do{ e`fN+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); LoQm&3/  
SortUtil.swap(data,l,r); Y=l91dxGI  
} 0Kxc$c  
while(l SortUtil.swap(data,l,r); WUSkN;idVG  
SortUtil.swap(data,l,j); hTZaI*  
jiMI&cl  
if((l-i)>THRESHOLD){ & Me%ZM0  
stack[++top]=i; *4;MO2g  
stack[++top]=l-1; {1.t ZCMT  
} i w<2|]>l  
if((j-l)>THRESHOLD){ PK@hf[YHe  
stack[++top]=l+1; s88lN=;  
stack[++top]=j; UW*[)yw]  
} ML!Z m[I9  
AXhV#nZt0  
}  g-MaP  
file://new InsertSort().sort(data); hmv"|1Sa!~  
insertSort(data); GpV"KVJJ/  
} Y#EM]x5!=  
/** 1CFTQB>  
* @param data o/bmS57  
*/ ~{hcJ:bI  
private void insertSort(int[] data) { _6v|k}tW'Y  
int temp; E`3yf9"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); UGK4uK+I`  
} <taN3  
} \Jr ta  
} h[M~cZ{  
1-4iy_d  
} ,rT62w*e  
wiXdb[[#  
归并排序: 8_6\>hW&  
pZx'%-\-T  
package org.rut.util.algorithm.support; ORhe?E]  
?+)O4?#  
import org.rut.util.algorithm.SortUtil; a,3} o:f  
o;+$AU1f  
/** 8jW"8~Y#0  
* @author treeroot \*Ro a&<!  
* @since 2006-2-2 g z-X4A"  
* @version 1.0 V )CS,w  
*/ SR@yG:~  
public class MergeSort implements SortUtil.Sort{ 8y5iT?.~vy  
2`qO'V3Q  
/* (non-Javadoc) Zb<IZ)i#1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |X/ QSL  
*/ kYBy\  
public void sort(int[] data) { t(YrF,  
int[] temp=new int[data.length]; F3$@6J8<[z  
mergeSort(data,temp,0,data.length-1); $gU6=vN1#  
}  ~{7/v  
?z>7&  
private void mergeSort(int[] data,int[] temp,int l,int r){ E?1"&D m  
int mid=(l+r)/2; c|8[$_2  
if(l==r) return ; y%A!|aBu  
mergeSort(data,temp,l,mid); 1Uzsw  
mergeSort(data,temp,mid+1,r); <<}t&qE%2%  
for(int i=l;i<=r;i++){ v|:2U8YREf  
temp=data; !iBe/yb  
} al<[iZ  
int i1=l; 6KuB<od  
int i2=mid+1; 4<b=;8  
for(int cur=l;cur<=r;cur++){ ,2\?kPoc8  
if(i1==mid+1) Te=[tx~x  
data[cur]=temp[i2++]; e|)6zh<O:  
else if(i2>r) f>\guuG  
data[cur]=temp[i1++]; :=qblc  
else if(temp[i1] data[cur]=temp[i1++]; $Fx:w  
else :r%H sur(  
data[cur]=temp[i2++]; <smi<syx  
} B]Vnu7  
} ?}4 =A&][  
*GxOiv7"4W  
} [\(}dnj:  
ZPHiR4fQli  
改进后的归并排序: ^.5`jdk  
8zv=@`4@G  
package org.rut.util.algorithm.support; 'r;C( Gh6  
}TjiYA.  
import org.rut.util.algorithm.SortUtil; gFR9!=,/V%  
>\=~2>FCD  
/** 5g9lO]WDI  
* @author treeroot 4FK|y&p4r  
* @since 2006-2-2 oG5 :]/F  
* @version 1.0 q3a`Y)aVB  
*/ tHlKo0S$0  
public class ImprovedMergeSort implements SortUtil.Sort { 4 [2^#t[  
R%)ZhG*  
private static final int THRESHOLD = 10; 6[g~p< 8n}  
XRi/O)98o  
/* P70\ |M0~y  
* (non-Javadoc) DA'A-C2  
* VJ1(|v{D4[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l AF/O5b  
*/ !Z +4FwF  
public void sort(int[] data) { u2=gG.  
int[] temp=new int[data.length]; m/W0vPM 1  
mergeSort(data,temp,0,data.length-1); |3\$\qa  
} 5 fpBzn$  
^+Ho#]  
private void mergeSort(int[] data, int[] temp, int l, int r) { t[Dg)adc  
int i, j, k; ,VK! 3$;|  
int mid = (l + r) / 2; 2,.%]U  
if (l == r) '\yp}r'u  
return; gY'w=(/`  
if ((mid - l) >= THRESHOLD) VO"f=gFg  
mergeSort(data, temp, l, mid); WR'm<u  
else r?Y+TtF\e  
insertSort(data, l, mid - l + 1); uYW9kw>$  
if ((r - mid) > THRESHOLD) tEEeek(!  
mergeSort(data, temp, mid + 1, r); #P:o  
else iwb]mJUA  
insertSort(data, mid + 1, r - mid); @.T w*t  
b"x[+&%i  
for (i = l; i <= mid; i++) { nNe`?TS?f  
temp = data; B{IYVviiP  
} 7gIK+1`  
for (j = 1; j <= r - mid; j++) { jA ?tDAx`  
temp[r - j + 1] = data[j + mid]; 2K/+6t}  
} pyPS5vWG  
int a = temp[l]; Of| e]GR  
int b = temp[r]; .eQIU$Kw!O  
for (i = l, j = r, k = l; k <= r; k++) { V&)lS Qw  
if (a < b) { +QS7F`O  
data[k] = temp[i++]; B-63IN  
a = temp; &mebpEHUG7  
} else { ppcuMcR{  
data[k] = temp[j--]; [5&zyIi  
b = temp[j]; Q8:`;W  
} 1S !<D)n  
} hR;J#w  
} Mv9q-SIc[  
]KX _a1e  
/** <a>\.d9#)7  
* @param data /rRQ*m_  
* @param l b}P5*}$:9"  
* @param i cp|&&q  
*/ 5fGUJ[F=  
private void insertSort(int[] data, int start, int len) { \VW&z:/*pZ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .:eNL]2%:  
} ]V9z)uz  
} gemjLuf  
} fneg[K  
} :v/6k  
\<ohe w  
堆排序:  (`0dO8  
JM8 s]&  
package org.rut.util.algorithm.support; dt NHj/\  
.f'iod-   
import org.rut.util.algorithm.SortUtil; S30@|@fTz  
/$OX'L&b  
/** Kgi| 7w  
* @author treeroot @uc N|r}=R  
* @since 2006-2-2 bI^zwK,@4  
* @version 1.0 F+e J9  
*/ o!Vs{RRu}  
public class HeapSort implements SortUtil.Sort{ yK"OZ2Mv  
>-0b@ +j  
/* (non-Javadoc) ypxqW8Xe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,z}wR::%  
*/ o6e6Jw  
public void sort(int[] data) { Q>gU(  
MaxHeap h=new MaxHeap(); ;]<{ <czc  
h.init(data); B!jINOg  
for(int i=0;i h.remove(); [ e4)"A"  
System.arraycopy(h.queue,1,data,0,data.length); !x9j~D'C`  
} 9g" 1WZ!  
^'8T9N@U  
private static class MaxHeap{ @Yua%n6]#D  
HLMEB0zh^  
void init(int[] data){ C7=Q!UK`\  
this.queue=new int[data.length+1]; M4a- +T"  
for(int i=0;i queue[++size]=data; ,j~ R ^j  
fixUp(size); b@ J&jE~d  
} tMaJ; 4  
} 02]9 OnWw  
)=\W sQ  
private int size=0; UXB[3SP  
!=#230Y  
private int[] queue; mfu >j,7l  
g;(r@>U.r  
public int get() { )2X ng_,  
return queue[1]; X-di^%<  
} ZyqTtA!A  
0y4z`rzTn  
public void remove() { }z&P^p)R  
SortUtil.swap(queue,1,size--); Y[8w0ve- g  
fixDown(1); @URLFMFi  
} nbYkr*: "t  
file://fixdown H3 _7a9  
private void fixDown(int k) { *VT@  
int j; }I7/FqrD  
while ((j = k << 1) <= size) { ;??wLNdf-  
if (j < size %26amp;%26amp; queue[j] j++; 6l#1E#]|  
if (queue[k]>queue[j]) file://不用交换 fSp(}'m2L  
break; 3mn0  
SortUtil.swap(queue,j,k); JWG7QH  
k = j; &?3?8Q\  
} EmNB}\IYU  
} +P6#7.p`Z  
private void fixUp(int k) { R<mLG $  
while (k > 1) { z;x `dOP  
int j = k >> 1; amf=uysr  
if (queue[j]>queue[k]) MBCA%3z08  
break; mQ#@"9l%  
SortUtil.swap(queue,j,k); =K2Dxu_:  
k = j; uPe4Rr  
} lh* m(  
} =5&)^  
\S;% "0!  
} wxZnuCO%H8  
|0w'+HaE~N  
} G#'3bxI{f+  
A"Rzn1/  
SortUtil: !)tXN=(1a  
=ox#qg.5  
package org.rut.util.algorithm; ^ j@Q2>&?  
Kq`Luf  
import org.rut.util.algorithm.support.BubbleSort; |bDN~c:/  
import org.rut.util.algorithm.support.HeapSort; ~%^af"_  
import org.rut.util.algorithm.support.ImprovedMergeSort; UQ>GAzh  
import org.rut.util.algorithm.support.ImprovedQuickSort; < W,k$|w  
import org.rut.util.algorithm.support.InsertSort; w;Qo9=-  
import org.rut.util.algorithm.support.MergeSort;  L}AR{  
import org.rut.util.algorithm.support.QuickSort; q 9qmz[  
import org.rut.util.algorithm.support.SelectionSort; k=Ef)'  
import org.rut.util.algorithm.support.ShellSort; eEJ8j_G  
`<t{NJ&f  
/** 'O`jV0aa'  
* @author treeroot ;:*o P(9k  
* @since 2006-2-2 {549&]/o  
* @version 1.0 "}K/ b  
*/ h_]3L/  
public class SortUtil { 6K P!o  
public final static int INSERT = 1; 5S7`gN.  
public final static int BUBBLE = 2; 1 7{]QuqNF  
public final static int SELECTION = 3; ^g[\.Q  
public final static int SHELL = 4; ^iubqtT]  
public final static int QUICK = 5; %R;cXs4r  
public final static int IMPROVED_QUICK = 6; ]T^m>v)X  
public final static int MERGE = 7; GMU<$x8o  
public final static int IMPROVED_MERGE = 8; *cp|lW!ag  
public final static int HEAP = 9; #2DH_P  
z/fRd6|[  
public static void sort(int[] data) { @.*[CC;&  
sort(data, IMPROVED_QUICK); ~<, \=;b/  
} vFb{(gIJ  
private static String[] name={ &7Ixf?e!K  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `#fOY$#XB  
}; _DC/`_'  
g)$Pvfc  
private static Sort[] impl=new Sort[]{ OJ UM Y<5  
new InsertSort(), =&"Vf!7YR7  
new BubbleSort(), D0i84I`Z%  
new SelectionSort(), :G^`LyOM  
new ShellSort(), ENC_#- 1x  
new QuickSort(), =(v!pEF  
new ImprovedQuickSort(), F.A<e #e?  
new MergeSort(), ^&&dO*0{  
new ImprovedMergeSort(), g) v"nNS  
new HeapSort() n{BC m %  
}; ejo4mQ]a  
ErESk"2t  
public static String toString(int algorithm){ EFql g9bK  
return name[algorithm-1]; ?xQ lX%&`6  
} d?N"NqaN  
no?)GQ  
public static void sort(int[] data, int algorithm) { p w>A Q  
impl[algorithm-1].sort(data); zp4ru\  
} ?%Y?z ]L#  
42 p6l   
public static interface Sort { ~n[LL)v  
public void sort(int[] data); 7gVWu"  
} A</[Q>8  
%hrv~=  
public static void swap(int[] data, int i, int j) { Qb|w\xT^Y  
int temp = data; ?qO,=ms>-  
data = data[j]; YfMe69/0I  
data[j] = temp; hQL9 Zl~  
} puqLXDjA/  
} }#'KME4  
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