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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。 .D>lv_kp  
插入排序: !7 ^He3  
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package org.rut.util.algorithm.support; %mYIXsuH  
y=j[v},4  
import org.rut.util.algorithm.SortUtil; bL[PNUG  
/** Iw<c 9w8  
* @author treeroot [a |fm*B!  
* @since 2006-2-2 v S+~4Q41  
* @version 1.0 \qTNWA #'  
*/ G#*!)#M <  
public class InsertSort implements SortUtil.Sort{ c3pt?C  
TwhK>HN  
/* (non-Javadoc) B]qh22Yib  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^LcI6 h  
*/ YI|G pq  
public void sort(int[] data) { ?\pE#~m  
int temp; Y3zO7*-@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;_SS3q  
} 1Ev+':%  
} IIR?@/q  
} E8dp  
4*,q 1yK  
} Sd\@Q% }o\  
h1gb&?w5P  
冒泡排序: QJE- $ :  
N^ET qg  
package org.rut.util.algorithm.support; 7S7!  
Y}#^n7*w~  
import org.rut.util.algorithm.SortUtil; f:Ja  
'q^Gg;c>+  
/** D8#q.OR]  
* @author treeroot &Egn`QU  
* @since 2006-2-2 %7@H7^s}9  
* @version 1.0 j bGH3 L  
*/ RQ'c~D)X  
public class BubbleSort implements SortUtil.Sort{ dB,#`tc=,  
w:LCm `d  
/* (non-Javadoc) c]n03o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (hV"z;rI  
*/ %i "  
public void sort(int[] data) { 2Ee1mbZVw8  
int temp; @/u`7FO$&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +UsR  
if(data[j] SortUtil.swap(data,j,j-1); 9}mp,egV  
} ,Ex\\p-  
} 2~U+PyeNz  
} bOdv]nQ1  
} %Uk/P  
lG+ltCc$9  
} &sgwY  
*u>\&`h=  
选择排序: 3.H-G~  
;E"mB4/)  
package org.rut.util.algorithm.support; :&-}S>pC  
:Ir:OD# o  
import org.rut.util.algorithm.SortUtil; .:raeDrd  
T ?? aVe]c  
/** *;d)'7<  
* @author treeroot <`*P/V  
* @since 2006-2-2 #]N9/Hij#g  
* @version 1.0 U:|v(U$"?  
*/ zLqp@\sT  
public class SelectionSort implements SortUtil.Sort { Ju[`Qw`I  
}"x*xN  
/* -}sya1(<8  
* (non-Javadoc) Rqz()M  
* 7jbm w<d)9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I`kp5lGD2  
*/ 4w6K|v<X  
public void sort(int[] data) { Y fA\#N0;3  
int temp; X&~Eo  
for (int i = 0; i < data.length; i++) { p4EItRZS  
int lowIndex = i; M\6`2q  
for (int j = data.length - 1; j > i; j--) { gc~h!%'.I  
if (data[j] < data[lowIndex]) { uPXqTkod  
lowIndex = j; @/(7kh +  
} 7qz-RF#s8  
} N8q Z{CWn  
SortUtil.swap(data,i,lowIndex); ~?5m5z O  
} Ve1] ECk  
} ')-(N um  
EM/+1 _u  
} EI.Pk>ZIm  
=*}Mymhk(  
Shell排序: +|<&#b0Xd  
aF"Z!HD  
package org.rut.util.algorithm.support; Hc%\9{zH  
=M#?*e  
import org.rut.util.algorithm.SortUtil; JJ0 CM:xe  
05 Q8`  
/** y;Ln ao7i  
* @author treeroot pe%)G6@G  
* @since 2006-2-2 ~&3"Mi&>`  
* @version 1.0 8#u_+;,p  
*/ U3K<@r  
public class ShellSort implements SortUtil.Sort{ h}>/Z3*  
=hOa 0X=  
/* (non-Javadoc) ZC*d^n]x.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I<K/d  
*/ `>EvT7u  
public void sort(int[] data) { 5 hadA>d  
for(int i=data.length/2;i>2;i/=2){ Hk*cO;c  
for(int j=0;j insertSort(data,j,i); }n%R l\p  
} D>e\OfTR:  
} l1Q+hz5"*U  
insertSort(data,0,1); 5l/l]  
} <^_Vl8%  
o'C.,ic?C  
/** U hhmG+  
* @param data XWQ0V  
* @param j >#U <#  
* @param i z\8yB`8b^  
*/ v@uaf=x-  
private void insertSort(int[] data, int start, int inc) { {4aY}= -Q*  
int temp; *>p(]_s,  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,Z7Z!.TY!  
} s [F' h-y  
} =G F  
} x <\D@X^  
4 6lEJ  
} hYXZ21(K#  
a`~eC)T  
快速排序: H!.D2J   
%e7(HfW-U  
package org.rut.util.algorithm.support; L(n/uQ :  
51 +M_ ~  
import org.rut.util.algorithm.SortUtil; i!$^NIcJ  
nWF4[<t  
/** h4\6h  
* @author treeroot '(X[ w=WXy  
* @since 2006-2-2 b\;u9C2y'  
* @version 1.0 3|+f si)x  
*/ H..ZvGu  
public class QuickSort implements SortUtil.Sort{ ,Zf!KQw  
J-\?,4mcP  
/* (non-Javadoc) RL Zf{Q>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TWR $D  
*/ t<k [W'#  
public void sort(int[] data) { }`N2ZxC0AQ  
quickSort(data,0,data.length-1); "SU-^z  
} e_c;D2' F  
private void quickSort(int[] data,int i,int j){ f THun?Vn  
int pivotIndex=(i+j)/2; YATdGLTeq  
file://swap 9N D+w6"  
SortUtil.swap(data,pivotIndex,j); 2ZG1n#  
)Ct*G= N  
int k=partition(data,i-1,j,data[j]); G P[r^Z  
SortUtil.swap(data,k,j); ,;iBeqr5  
if((k-i)>1) quickSort(data,i,k-1); @fH&(@  
if((j-k)>1) quickSort(data,k+1,j); c\MsVH2 |  
A$%!9Cma  
}  AMD?LjY~  
/** ki~y@@3I  
* @param data \}x'>6zr2  
* @param i ff}a <w  
* @param j +e8>?dkq  
* @return 3[=`uO0\7  
*/ aR)en{W  
private int partition(int[] data, int l, int r,int pivot) { CFJjh^ ~=  
do{ H[7cA9FI  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x:?a;muf  
SortUtil.swap(data,l,r); '#N5i  
} #jLaIXms  
while(l SortUtil.swap(data,l,r); ?S&w0}R  
return l; sVZZp  
} ljJz#+H2_  
/"Yx@n  
} TA0D{  
XJ h:U0  
改进后的快速排序: E!I  
?YO =J  
package org.rut.util.algorithm.support; %]<RRH.w  
\5[D7}  
import org.rut.util.algorithm.SortUtil; D=~B7b:  
1U7,X6=~  
/** (eRKR2% q  
* @author treeroot WR a+zii,  
* @since 2006-2-2 Itr7lv'5xx  
* @version 1.0 e*P=2*]M  
*/ E./__Mz@  
public class ImprovedQuickSort implements SortUtil.Sort { Sc/`=h]T  
:G`L3E&1s  
private static int MAX_STACK_SIZE=4096; ^b"bRQqm  
private static int THRESHOLD=10; 1O9p YW5J  
/* (non-Javadoc) qqe2,X?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nQ642i%RQ  
*/ !)%>AH'  
public void sort(int[] data) { d=?Mj]  
int[] stack=new int[MAX_STACK_SIZE]; 3Rd`Ysp  
Jh\: X<q  
int top=-1; j6e}7  
int pivot; 7rdw`  
int pivotIndex,l,r; {x[;5TM  
X7H'Uk9:  
stack[++top]=0; `8Jq~u6_Z  
stack[++top]=data.length-1; kG$E tE#  
'(*&Ax  
while(top>0){ AbF(MK=i  
int j=stack[top--]; om}/f`  
int i=stack[top--]; !{Q:(B#ec  
{xv?wenE  
pivotIndex=(i+j)/2; CQSpPQA  
pivot=data[pivotIndex]; %GX uuE}mX  
RVkU+7  
SortUtil.swap(data,pivotIndex,j); ^`rpf\GX(  
d@4rD}_Z  
file://partition  dd<:#c9  
l=i-1; +5HnZ?E\  
r=j; V#NG+U.B  
do{ m Ztv G,  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); KZF0rW  
SortUtil.swap(data,l,r); =naR{pI  
} VT% KN`l  
while(l SortUtil.swap(data,l,r); gMs+?SNHAh  
SortUtil.swap(data,l,j); '%SR.JL  
zLsb`)!  
if((l-i)>THRESHOLD){ Ufdl|smt1  
stack[++top]=i; 5{13 V*<  
stack[++top]=l-1; <&5m N  
} yuHZ&e  
if((j-l)>THRESHOLD){ 2mqK3-c  
stack[++top]=l+1; #ya\Jdx   
stack[++top]=j; DH:GI1Yu>I  
} GIm " )}W  
46bl>yk9<  
} \.H9$C$  
file://new InsertSort().sort(data); g@~!kh,TH  
insertSort(data); ](W5.a,-$L  
} D XV@DQ  
/** 7}4'dW.  
* @param data <nWKR,  
*/ , 3X: )  
private void insertSort(int[] data) { TN35CaSmq  
int temp; F{k$Atb?g/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); BXg!zW%+  
} p$Kj<:qiP  
} ba uA}3  
} VL+N: wb>  
;gDMl57PQ.  
} Wy<[(Pd   
MpO RGd  
归并排序: ~|r~NO 7[  
mn]-rTr  
package org.rut.util.algorithm.support; t;8\fIW5  
8Q2]*%  
import org.rut.util.algorithm.SortUtil; T><{ze  
,~4H{{<j  
/** jn-QKdqM  
* @author treeroot 'K@-Z]  
* @since 2006-2-2 TUh&d5a9H  
* @version 1.0 ]^=|Zd-  
*/ qib 7Z]j  
public class MergeSort implements SortUtil.Sort{ 6HoqEku/Q  
 fb\DiKsW  
/* (non-Javadoc) ]3*P:$Rq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t5.`! 3EO  
*/ X rF3kz!44  
public void sort(int[] data) { A1^Ga5 B>  
int[] temp=new int[data.length]; VFv9Q2/.  
mergeSort(data,temp,0,data.length-1); d%0+i/p  
} RMoJz6 ^>  
y 'OlQ2U  
private void mergeSort(int[] data,int[] temp,int l,int r){ "EoDQT"0  
int mid=(l+r)/2; 3VmI0gsm.>  
if(l==r) return ; b~7Jh:%@;  
mergeSort(data,temp,l,mid); |6E .M1  
mergeSort(data,temp,mid+1,r); %*lp< D  
for(int i=l;i<=r;i++){ Q1Ux!$_  
temp=data; E&*: jDg  
} 'b^l'KN:S  
int i1=l; ~eP  
int i2=mid+1; Nl@k*^  
for(int cur=l;cur<=r;cur++){ W wuZ(>|  
if(i1==mid+1) W9Nmx3ve  
data[cur]=temp[i2++]; JqEW= 5  
else if(i2>r) u~W{RHClW  
data[cur]=temp[i1++]; OifvUTl9b  
else if(temp[i1] data[cur]=temp[i1++]; mN;+TN'?{  
else iq?l#}]  
data[cur]=temp[i2++]; eNRs&^  
} !X|k"km"  
} $X*mdji  
[*8Y'KX <  
} 8tLHr@%%  
XS?gn.o\  
改进后的归并排序: ZK6Hvc0  
o0ZIsrr  
package org.rut.util.algorithm.support; ?aBj#  
ak;6z]f8[  
import org.rut.util.algorithm.SortUtil; n@!wp/J,  
+\0T\;-Xe  
/** Vtb1[cnna  
* @author treeroot n`(~O O  
* @since 2006-2-2 {Oj7  
* @version 1.0 |uI?ySF  
*/ jin db#)bz  
public class ImprovedMergeSort implements SortUtil.Sort { igDG}q3jG  
@%1IkvJV  
private static final int THRESHOLD = 10; MRfb[p3Cx  
;+ azeW ^  
/* 0VN7/=n|  
* (non-Javadoc) zB*euHIqZ  
* L@RIZu>ZW+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hN   
*/ - v]Qhf&>  
public void sort(int[] data) { y ,E.SB  
int[] temp=new int[data.length]; 5t\HJ`C1Z  
mergeSort(data,temp,0,data.length-1); u%u&F^y  
} _;hf<|c  
h >-'-Hx+  
private void mergeSort(int[] data, int[] temp, int l, int r) { |;+qld[4z  
int i, j, k; a?F!,=F  
int mid = (l + r) / 2; PU1,DU  
if (l == r) oFCgu{\kt  
return; _X4!xbP  
if ((mid - l) >= THRESHOLD) {$d<1y^  
mergeSort(data, temp, l, mid); y6-XHeU  
else Q&CElx?L  
insertSort(data, l, mid - l + 1); `'i( U7?  
if ((r - mid) > THRESHOLD) h7]EB!D\A  
mergeSort(data, temp, mid + 1, r); ? }yfKU`  
else 7]E m ,  
insertSort(data, mid + 1, r - mid); yb2}_k.JG  
bFY~oa%C  
for (i = l; i <= mid; i++) { ba3*]01Yb  
temp = data; LY 0]l$  
} Y9Z]i$qS&k  
for (j = 1; j <= r - mid; j++) { mM_ k ^4:  
temp[r - j + 1] = data[j + mid]; qnChM ;)  
} `zA#z />  
int a = temp[l]; 1vnYogL   
int b = temp[r]; , sjh^-;  
for (i = l, j = r, k = l; k <= r; k++) { thc <xxRP  
if (a < b) { _Mk7U@j+9  
data[k] = temp[i++]; +D&Pp0xe  
a = temp; }rq9I"/L  
} else { ?Q0I'RC  
data[k] = temp[j--]; KkcXNjPVS  
b = temp[j]; *nC(-(r:J`  
} zF`3 gl.  
} rf.`h{!!  
} h!gk s-0  
WBr59@V  
/** :g6n,p_#  
* @param data 8`=v.   
* @param l s@8w-]"  
* @param i -TO\'^][X  
*/ t~``md4  
private void insertSort(int[] data, int start, int len) { 3Fs5RC~a  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); PL X>-7@  
} >yB(lKV  
} GbI-SbE  
} H1/?+N}(  
} B07v^!Z>  
"ZrOrdlg+A  
堆排序: r)^vO+3u  
j8Cho5C  
package org.rut.util.algorithm.support; 15U(={  
,ho3  
import org.rut.util.algorithm.SortUtil; K/L;8a  
t `kui.  
/** g%nl!dgS  
* @author treeroot h6~$/`&]b  
* @since 2006-2-2 _n;;][]S  
* @version 1.0 bQ'8SCe  
*/ `=UWqb(K_  
public class HeapSort implements SortUtil.Sort{ @-HG`c ct  
pav'1d%  
/* (non-Javadoc) mN |r)4{`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x/!5K|c  
*/ gNYqAUG5  
public void sort(int[] data) { UC HZ2&  
MaxHeap h=new MaxHeap(); 3]RyTQ  
h.init(data); q1?&Ev^  
for(int i=0;i h.remove(); s{0aBeq  
System.arraycopy(h.queue,1,data,0,data.length); 8NBT|N~N  
} m3bCZ 9iE  
n_?tN\M  
private static class MaxHeap{ 3"N)xO-  
\xv;sl$f  
void init(int[] data){ Fqy\CMC  
this.queue=new int[data.length+1]; QnQOm ""  
for(int i=0;i queue[++size]=data; U;N:j8  
fixUp(size); 8[vc?+>&  
} @$9'@")  
} F$BbYf2i  
*/:uV B,b2  
private int size=0; >-8cU_m7s  
6;'dUGvH  
private int[] queue; d?wc*N3  
M(x$xAiD  
public int get() { b~=0[Rv  
return queue[1]; t>=fTkB  
} &i+Ce  
Rk!X]-`=  
public void remove() { WOzf]3Xcj  
SortUtil.swap(queue,1,size--); JjaoOe  
fixDown(1); i4Lc$20?d  
}  ]^'@ [<  
file://fixdown [e[<p\]  
private void fixDown(int k) { I9h ?;(  
int j; H0m|1 7  
while ((j = k << 1) <= size) { tW WWx~k  
if (j < size %26amp;%26amp; queue[j] j++; y!tC20Q   
if (queue[k]>queue[j]) file://不用交换 (T`E!A0I\?  
break; yY?b.ty  
SortUtil.swap(queue,j,k); Gx`Lks  
k = j; }>)[<;M>%  
} Bn@(zHG+5&  
} C|pdv  
private void fixUp(int k) { Xs: 3'ua  
while (k > 1) { ^8.]d~j  
int j = k >> 1; YIw1  
if (queue[j]>queue[k]) ~ab:/!Z  
break; T,aW8|  
SortUtil.swap(queue,j,k); $9Hcdbdm  
k = j; Po%LE]v,  
} [sB 9gY(  
} F*"}aP$  
&f-Uyr7?  
} }=c85f~i  
AbZKYF P  
} /|* Y2ETOr  
y=?)n\ f  
SortUtil: ;>n,:355L  
AGLscf.  
package org.rut.util.algorithm; % qV 6  
eek7=Z  
import org.rut.util.algorithm.support.BubbleSort; |{CfWSB7~@  
import org.rut.util.algorithm.support.HeapSort; 8Z(Mvq]f&  
import org.rut.util.algorithm.support.ImprovedMergeSort; : q#Xq;Wp  
import org.rut.util.algorithm.support.ImprovedQuickSort; :Nofp&  
import org.rut.util.algorithm.support.InsertSort; phM>.y_  
import org.rut.util.algorithm.support.MergeSort; |*}4 m'c  
import org.rut.util.algorithm.support.QuickSort; BD(Z5+EU1  
import org.rut.util.algorithm.support.SelectionSort; L 4!{h|  
import org.rut.util.algorithm.support.ShellSort; B95B|tU>.  
/!c${W!sY  
/** j4qJ.i  
* @author treeroot Y "/]|'p  
* @since 2006-2-2 hCC<?5q  
* @version 1.0 +HBd %1  
*/ 8F'x=lIO  
public class SortUtil { '&\kxNglJ  
public final static int INSERT = 1; h*-Pr8  
public final static int BUBBLE = 2; z CvKDlL  
public final static int SELECTION = 3; zux{S; :?  
public final static int SHELL = 4; iyg*Xbmi~.  
public final static int QUICK = 5; A!h`]%0B  
public final static int IMPROVED_QUICK = 6; D8$G`~hD  
public final static int MERGE = 7; @nux9MX<9  
public final static int IMPROVED_MERGE = 8; v%q0OX>9X"  
public final static int HEAP = 9; <yd{tD$A*  
3\XU_Xs(]  
public static void sort(int[] data) { *s:(jDlv  
sort(data, IMPROVED_QUICK); r-Pkfy(  
} %44leINx  
private static String[] name={ UEguF &  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ljb7oA3cP4  
}; [PDNwh0g5  
Q\ 0cvmU  
private static Sort[] impl=new Sort[]{ #3gp6*R  
new InsertSort(), 1,% R;7J=g  
new BubbleSort(), {GQ^fu;q  
new SelectionSort(), HhvdqvIEG  
new ShellSort(), "vOwd.(?N  
new QuickSort(), %^ !,t:d  
new ImprovedQuickSort(), @0/+_2MH-  
new MergeSort(), v_DedVhe  
new ImprovedMergeSort(), YB2VcF.LU  
new HeapSort() JsODzw  
}; ^zQ/mo,Z  
`Tv[DIVW  
public static String toString(int algorithm){ "$YJX1u3  
return name[algorithm-1]; |>dI/_'  
} =w{Z@S(ukz  
vkri+:S3  
public static void sort(int[] data, int algorithm) { Zcx`SC-0  
impl[algorithm-1].sort(data); e]zBf;9 J  
} )8$=C#qC[  
^G}47(  
public static interface Sort { rR(X9i  
public void sort(int[] data); % ~H=sjg  
} u)+8S/ )  
~kEI4}O  
public static void swap(int[] data, int i, int j) { uFinv2Z '  
int temp = data; |R/%D%_g  
data = data[j]; A;]}m8(*  
data[j] = temp; 1=d6NX)B  
} \D*KGd]M0  
} Al} B34.uh  
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