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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。 L'e^D|  
插入排序: W5 F\e[Ax5  
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package org.rut.util.algorithm.support; {h@\C|nF  
$V(]z`b&  
import org.rut.util.algorithm.SortUtil; D=-}&w_T"  
/** v.Ba  
* @author treeroot Q?k *3A  
* @since 2006-2-2 {R!yw`#^B  
* @version 1.0 6P1s*u  
*/ 2'Dl$DH  
public class InsertSort implements SortUtil.Sort{ HrBJi  
)x|;%.8FX7  
/* (non-Javadoc) -`~qmRpqY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cg): Q8  
*/ A)&FcMO*z  
public void sort(int[] data) { s$R /!,c  
int temp; s1D<R,J|H  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ={O ~  
} :Z//  
}  vmqa_gU\  
} il5C9ql$  
f+^6.%  
} X&pYLm72;  
N `|A  
冒泡排序: i)o;,~ee  
EL?(D  
package org.rut.util.algorithm.support; "CT}34l  
N-M.O:p  
import org.rut.util.algorithm.SortUtil;  VGV-t  
N'v3 |g  
/** UphTMyn3  
* @author treeroot y|5s  
* @since 2006-2-2 r)iEtT!p*  
* @version 1.0 2tq2   
*/ uQ5h5Cfz  
public class BubbleSort implements SortUtil.Sort{ Y@+Rb  
;5j|B|v  
/* (non-Javadoc) j>\c > U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r<UVO$N  
*/ G)Gp}4gV}  
public void sort(int[] data) { _uQ]I^'D  
int temp; 1INX#qTZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ z'q~%1t  
if(data[j] SortUtil.swap(data,j,j-1); n%&L&G  
} Ay16/7h@hi  
} $D^\[^S  
} IOl_J>D]F  
} +~^S'6yB  
G(&[1V%x  
} ,9P-<P  
U**8^:*y#:  
选择排序: uY& 1[(Pb  
/f3/}x!po  
package org.rut.util.algorithm.support;  =_dM@j  
^[?y 2A:  
import org.rut.util.algorithm.SortUtil; <~ smBd  
p;+O/'/j  
/** C?z S}ob  
* @author treeroot kTb$lLG\xk  
* @since 2006-2-2 !#KKJ`uB"  
* @version 1.0 ku]5sd >b  
*/ \=ML*Gi*  
public class SelectionSort implements SortUtil.Sort { ipv5JD[  
<Ua~+U(FR0  
/* 3B1\-ry1M  
* (non-Javadoc) w]wZJ/U`  
* | &X<-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )eyzHB,H  
*/ VE )D4RL  
public void sort(int[] data) {  Unk/uk  
int temp; @{y'_fw  
for (int i = 0; i < data.length; i++) { *7!MG  
int lowIndex = i; Xh@K89`uX  
for (int j = data.length - 1; j > i; j--) { QQl.5'PP  
if (data[j] < data[lowIndex]) { @nktD.  
lowIndex = j; *g(d}C!  
} s@\3|e5g  
} cbJgeif  
SortUtil.swap(data,i,lowIndex); `|'w]rj:"+  
} #J[g r_  
} C`.YOkpj  
Vq'7gJj'  
} t1']q"  
]Ur/DRNS  
Shell排序: [b++bCH3  
l]]NVBA])  
package org.rut.util.algorithm.support; fs! dI  
\dk1a  
import org.rut.util.algorithm.SortUtil;  FOiwA.:0  
qOo4T@ t3  
/** ea 3w  
* @author treeroot d0aXA+S%  
* @since 2006-2-2 Qte5E}V`  
* @version 1.0 Cj0r2^`  
*/ FZ- Wgh 0z  
public class ShellSort implements SortUtil.Sort{ G+ /Q!ic  
,>j3zjf^  
/* (non-Javadoc) 7'\. Q J!<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Ea3(OsuXn  
*/ Yk Ku4f  
public void sort(int[] data) { n8,%<!F^  
for(int i=data.length/2;i>2;i/=2){ 2/?Zp=|j\  
for(int j=0;j insertSort(data,j,i); C[^VM$  
} 7<j!qWm0  
} #HcQ*BiF3  
insertSort(data,0,1); ,P~e)<.  
} i 8sv,P  
@M'k/jl  
/** b<a3Ue%  
* @param data mA(kq   
* @param j FQWjL>NB  
* @param i UFB|IeX?q  
*/ V;SfW2`)  
private void insertSort(int[] data, int start, int inc) { l#0zHBc  
int temp; !:+U-mb*  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tV++QC7@L  
} k \OZ'dS  
} Z518J46o  
} [+[ W\6  
lS=YnMs6a  
} <-`bWz=+  
6qZQ20h  
快速排序: \]x`f3F  
7?fgcb3  
package org.rut.util.algorithm.support; zdP?HJ=F  
SgU@`Pb  
import org.rut.util.algorithm.SortUtil; 534pX7dg  
-h8mJ D%Oi  
/**  ^*P?gG  
* @author treeroot 4phCn5  
* @since 2006-2-2 0AnL]`"t.3  
* @version 1.0 #(] D]f[@  
*/ r]e{~v/  
public class QuickSort implements SortUtil.Sort{ k5RzW4zq;  
SzLlJUVX  
/* (non-Javadoc) |gk*{3~y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |.; N_i  
*/ ?qQ{]_q1&.  
public void sort(int[] data) { 3U6QYD55]]  
quickSort(data,0,data.length-1); G"r{!IFL  
} i@/%E~W  
private void quickSort(int[] data,int i,int j){ *JOK8[Qn  
int pivotIndex=(i+j)/2; JQ+Mg&&Q  
file://swap %`~4rf"7  
SortUtil.swap(data,pivotIndex,j); #A>*pF  
\KV.lG!  
int k=partition(data,i-1,j,data[j]); ckX8eg!f  
SortUtil.swap(data,k,j); L91(|gQP  
if((k-i)>1) quickSort(data,i,k-1); ,88B@a  
if((j-k)>1) quickSort(data,k+1,j); dz#"9i5b  
}cz58%  
} /IirTmFK  
/** P}6#s'07~  
* @param data Dk\%,[4(  
* @param i )=)N9CRy  
* @param j &^ERaPynd  
* @return jnV#Q ;  
*/ Gr({30"8  
private int partition(int[] data, int l, int r,int pivot) { Yyk~!G/@  
do{ sD3Ts;k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }Z <I%GT  
SortUtil.swap(data,l,r); 1^k}GXsWmE  
} >D=X Tgqqq  
while(l SortUtil.swap(data,l,r); !+$qSD,%x  
return l; h x^@aI  
} i%yKyfD  
+HE,Q6-A  
} Yte*$cJ=  
( %sf wv  
改进后的快速排序: thPAD+u.3  
%Vo'\|  
package org.rut.util.algorithm.support; 9ERdjS  
5T/+pC$e=  
import org.rut.util.algorithm.SortUtil; {Lju7'5L  
3\2&?VAjR  
/** ;)rhx`"n  
* @author treeroot X}B] 5  
* @since 2006-2-2 TrDTay  
* @version 1.0 IiKU =^~w  
*/ .UxkTads  
public class ImprovedQuickSort implements SortUtil.Sort { y1`%3\  
T3b0"o27  
private static int MAX_STACK_SIZE=4096;  3B#fnj  
private static int THRESHOLD=10; 9Zx| L/\  
/* (non-Javadoc) *r>Y]VG;S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '(lsJY[-x  
*/ hbXmIst  
public void sort(int[] data) { tdU'cc?M  
int[] stack=new int[MAX_STACK_SIZE]; K*~xy bA  
8\il~IFyi  
int top=-1; :MDFTw~|  
int pivot; d/NjY[`5+  
int pivotIndex,l,r; 4gZR!J  
E2hML  
stack[++top]=0; Q8TR@0d  
stack[++top]=data.length-1; .t ^1e  
qPu?rU{2  
while(top>0){ ; <- f  
int j=stack[top--]; 3meZ]u  
int i=stack[top--]; P'}EZ'  
JNU9RxR  
pivotIndex=(i+j)/2; u}'m7|)8  
pivot=data[pivotIndex]; yJx,4be  
%5ov!nm7  
SortUtil.swap(data,pivotIndex,j); } %3;j5 ;6  
w_@6!zm  
file://partition :4:U\k;QwA  
l=i-1; M!G/5:VZ  
r=j; *"|f!t  
do{ 0>Kgz!I  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~Q- /O~  
SortUtil.swap(data,l,r); TGpdl`k\T  
} =)#XZ[#F  
while(l SortUtil.swap(data,l,r); TPJuS)TU9  
SortUtil.swap(data,l,j); uxW |&q  
7WV"Wrl]  
if((l-i)>THRESHOLD){ %i&am=  
stack[++top]=i; sVO|Ghy65  
stack[++top]=l-1; +MS*YpPW  
} e{: -N  
if((j-l)>THRESHOLD){ |r*y63\T  
stack[++top]=l+1; $7-4pW$y  
stack[++top]=j; Ow0~sFz  
} $jC+oYXj  
D<Z\6)|%I  
} Lxa<zy~b  
file://new InsertSort().sort(data); RG1#\d-fE  
insertSort(data); sI)jqHZG  
} #;2kN &  
/** ]<},[s  
* @param data 7CT446  
*/ s_u! RrC  
private void insertSort(int[] data) { gd)VL}k  
int temp; gYL#} )g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &S^a_L:  
} H8c -/  
} y_IF{%i  
} BQMo*I>I  
CIR2sr0a  
} h#h)=;  
Ud-c+, xX  
归并排序: B)DtJ f  
WAr6Dv,8  
package org.rut.util.algorithm.support; o hPXwp?]  
C-2#-{<  
import org.rut.util.algorithm.SortUtil; eET1f8 B=L  
5IG#-Q(6sp  
/** o>M&C X+j$  
* @author treeroot `yXHb  
* @since 2006-2-2 $nthMx$  
* @version 1.0 mqQ//$Y   
*/ 1 RyvPP  
public class MergeSort implements SortUtil.Sort{ o<S(ODOfi  
n%dh|j2u  
/* (non-Javadoc) (.M &nN'Ce  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f <DqA/$  
*/ :JxuaM8  
public void sort(int[] data) { }e1]Ib!  
int[] temp=new int[data.length]; Oi!uJofW  
mergeSort(data,temp,0,data.length-1); GQkI7C  
} ()$tP3 o  
%Y].i/".;P  
private void mergeSort(int[] data,int[] temp,int l,int r){ h*NBSvn  
int mid=(l+r)/2; X{5(i3?S  
if(l==r) return ; #w[Ie+  
mergeSort(data,temp,l,mid); 0Q/BTT%X  
mergeSort(data,temp,mid+1,r); S#D6mg$Z,  
for(int i=l;i<=r;i++){ JOq&(AZe  
temp=data; dqL)q3  
} i;<H^\%  
int i1=l; yzCamm4~0  
int i2=mid+1; o 3 G*   
for(int cur=l;cur<=r;cur++){ ;#2yF34gv  
if(i1==mid+1) ma2-66M~j  
data[cur]=temp[i2++]; K30{Fcb< h  
else if(i2>r) cr{f*U6`  
data[cur]=temp[i1++]; fH 5/  
else if(temp[i1] data[cur]=temp[i1++]; s4\_%je<v  
else "Kn%|\YL@4  
data[cur]=temp[i2++]; [1`&\C_E  
} H|!|fo-Tx  
} pL'+sW  
OEgp!J  
} &q[`lIV,L  
)mXu{uowr  
改进后的归并排序: 2G`tS=Un  
g"v-hTx  
package org.rut.util.algorithm.support; 3hzKd_  
K<w$  
import org.rut.util.algorithm.SortUtil; 6SD9lgF*-  
&Sp2['a!  
/** Oc?]L&ap  
* @author treeroot M,9f}V)  
* @since 2006-2-2 TzY[- YlvF  
* @version 1.0 "PY&NL?  
*/ ^{fA:N=  
public class ImprovedMergeSort implements SortUtil.Sort { e/!xyd  
d#3E'8  
private static final int THRESHOLD = 10; w'D=K_h  
dX~$#-Ad86  
/* p#(5 ;  
* (non-Javadoc) nJo6;_MI!  
* Ut^ {4_EC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _QOZ`st  
*/ t2q{;d~.  
public void sort(int[] data) { nx'D&, VX  
int[] temp=new int[data.length]; -]~vE fq+T  
mergeSort(data,temp,0,data.length-1); f+W %X  
} =ET|h}I  
5"9!kZ(<  
private void mergeSort(int[] data, int[] temp, int l, int r) {  [E|%  
int i, j, k; rjW\tuZI  
int mid = (l + r) / 2; /jv4# 9  
if (l == r) t5WW3$Nf  
return; A^"( VaK  
if ((mid - l) >= THRESHOLD) -|A`+1-R+  
mergeSort(data, temp, l, mid); q*4=sf,>  
else 1$ C\ `  
insertSort(data, l, mid - l + 1); \B~}s}  
if ((r - mid) > THRESHOLD) ?T <2Cl'C  
mergeSort(data, temp, mid + 1, r); u IGeSd5B  
else dBMr%6tz  
insertSort(data, mid + 1, r - mid); r5g:#mF"  
#Rcb iV*M  
for (i = l; i <= mid; i++) { Ves x$!F#  
temp = data; 5ki<1{aVtZ  
} KI{B<S3*Z  
for (j = 1; j <= r - mid; j++) { h#rziZ(  
temp[r - j + 1] = data[j + mid]; +&h<:/ V  
} vCS D1~V_  
int a = temp[l]; P<A_7Ho  
int b = temp[r]; 2^$Ha|  
for (i = l, j = r, k = l; k <= r; k++) { -9z!fCu3  
if (a < b) { 'l*p!=  
data[k] = temp[i++]; S 7 *LV;  
a = temp; s xp>9&  
} else { '9d] B^)F  
data[k] = temp[j--]; 8C>\!lW"  
b = temp[j]; fC$(l@O?  
} ijR,%qg  
} aaODj>  
} V1Opp8  
0B?t:XU,  
/** TmIw?#q^  
* @param data :N ~A7@  
* @param l L1J~D?q  
* @param i $,9A?'  
*/ ny{Yr>:2  
private void insertSort(int[] data, int start, int len) { h#7p&F  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Doj>Irj? 7  
} K/Qo~  
} 9d_ Zdc  
} ~y.t amNW  
} >Kjl>bq  
#.^A5`k  
堆排序: zLda&#+  
+=N#6 # 1  
package org.rut.util.algorithm.support; "MNI_C#{  
sV`!4 u7%}  
import org.rut.util.algorithm.SortUtil; S)$iHBx{  
E\Et,l#|LY  
/** oi:!YVc  
* @author treeroot 6w Y6* R  
* @since 2006-2-2 )eaEc9o>  
* @version 1.0 yhSbX4Q  
*/ 2jiH&'@  
public class HeapSort implements SortUtil.Sort{ \hr2#!  
wYAi-gdOi  
/* (non-Javadoc) \x9.[?;=e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BL^\"Xh$|  
*/ |qFCzK9tD/  
public void sort(int[] data) { LW '3m5  
MaxHeap h=new MaxHeap(); 1 ms(03dp  
h.init(data); oW \k%Vj  
for(int i=0;i h.remove(); &K.js  
System.arraycopy(h.queue,1,data,0,data.length); yrVk$k#6}  
} vQ",rP%  
7U, [Ruu  
private static class MaxHeap{ A5[iFT>  
M\rZr3  
void init(int[] data){ kt;uB X3  
this.queue=new int[data.length+1]; ]5Mq^@mD'  
for(int i=0;i queue[++size]=data; F2:nL`]b[  
fixUp(size); g<(\#F}/  
} JRYCM}C]  
} FZ~^cK9g:  
*H({q`j33k  
private int size=0; <*F!A' w2o  
v%$c_'d  
private int[] queue; Q^! x8oUF  
[;RO=  
public int get() { {GP#/5$=  
return queue[1]; Qf#=Y j  
} WAqH*LB  
0Mu6R=s  
public void remove() { ,\Uc/w R  
SortUtil.swap(queue,1,size--); ziTE*rNJ  
fixDown(1); sRkPXzK  
} x=%wP VJ  
file://fixdown tEFbL~n  
private void fixDown(int k) { > t~2  
int j; L }L"BY3$  
while ((j = k << 1) <= size) { J,Rp&tavt:  
if (j < size %26amp;%26amp; queue[j] j++; O ! iN  
if (queue[k]>queue[j]) file://不用交换 &A!?:?3%O  
break; xjK@Q1MJ  
SortUtil.swap(queue,j,k); +ko-oZ7V  
k = j; e WWtMnq  
} *P0sl( &  
} AREpZ2GiU  
private void fixUp(int k) { e[l#r>NT  
while (k > 1) { (R|Ftjs .  
int j = k >> 1; MlH0  
if (queue[j]>queue[k]) 6O0CF}B*  
break; VteMsL/H  
SortUtil.swap(queue,j,k); YM.Q?p4g  
k = j; :-)H tyzf  
} 'M!*Ge  
} ;@$v_i   
;&i4QAo-  
} '"M9`@Y3^  
_A]=45cn~  
} F*TkQ\y  
k!)Pl,nJ  
SortUtil: 'D&[Y)f^  
9[ ,+4&wX7  
package org.rut.util.algorithm; |$+ xVi8  
1}ER+;If  
import org.rut.util.algorithm.support.BubbleSort; X(M|T]`b:  
import org.rut.util.algorithm.support.HeapSort; G{]tB w  
import org.rut.util.algorithm.support.ImprovedMergeSort; >1S39n5z.  
import org.rut.util.algorithm.support.ImprovedQuickSort; U]}f]GK  
import org.rut.util.algorithm.support.InsertSort; w e}G%09L  
import org.rut.util.algorithm.support.MergeSort; NSkIzaNY  
import org.rut.util.algorithm.support.QuickSort; uG,*m'x']  
import org.rut.util.algorithm.support.SelectionSort; |kK_B :K  
import org.rut.util.algorithm.support.ShellSort; _?rL7oTv  
nv'YtmR  
/** q)Qg'l^f  
* @author treeroot B`mTp01  
* @since 2006-2-2 8'|_O  
* @version 1.0 q>f|1Pf  
*/ ZZ2vdy38  
public class SortUtil { JS2h/Y$  
public final static int INSERT = 1; Zt/4|&w  
public final static int BUBBLE = 2; m4x8W2q  
public final static int SELECTION = 3; 7v]9) W=y  
public final static int SHELL = 4; 8d1r#sILI  
public final static int QUICK = 5; , G9{:  
public final static int IMPROVED_QUICK = 6; >e M> Y@8=  
public final static int MERGE = 7; A3eus  
public final static int IMPROVED_MERGE = 8; b`& :`  
public final static int HEAP = 9; RcpKv;=iB  
6BH P#B2j  
public static void sort(int[] data) { @5tGI U;1  
sort(data, IMPROVED_QUICK); P={8qln,X  
} /ei(Q'pc[  
private static String[] name={ 6xiCTs0@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O 4C}]E  
}; n@_aTY  
[oD u3Qn  
private static Sort[] impl=new Sort[]{ /7LAd_P6  
new InsertSort(), +[Bl@RHe^  
new BubbleSort(), $iMbtA5a Q  
new SelectionSort(), 8Os: SC@Q  
new ShellSort(), Aq;WQyZ2  
new QuickSort(), 'y%*W:O  
new ImprovedQuickSort(), jeWI<ms  
new MergeSort(), 5fY7[{ 2  
new ImprovedMergeSort(), SL 5QhP  
new HeapSort() fjh,e  
}; 4zhg#  
cH6<'W{*  
public static String toString(int algorithm){ +<rWYF(ii/  
return name[algorithm-1]; 'dJ(x  
} 1+v!)Y>Z&  
H$rNT/C  
public static void sort(int[] data, int algorithm) { lN~u='Kc  
impl[algorithm-1].sort(data); z$Z{ LR  
} \'.|7{Xu  
s6(bTO.  
public static interface Sort { `G "&IQ8.  
public void sort(int[] data); 7u<C&Z/  
} ;!pSYcT,  
T7LO}(I.&  
public static void swap(int[] data, int i, int j) { {66P-4Ev(  
int temp = data; =`E{QCW  
data = data[j]; Ft<B[bQ  
data[j] = temp; ycj\5+ g  
} Rj!9pwvT  
} 75W@B}dZd  
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