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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。 vo&h6'i>7  
插入排序: f:~$x  
B/n~ $  
package org.rut.util.algorithm.support; e0Gs|c+6  
zh\"sxL  
import org.rut.util.algorithm.SortUtil; 9v3n4=gc  
/** t6\--lk_  
* @author treeroot #mK?:O\-1  
* @since 2006-2-2 `GCK%evLG  
* @version 1.0 OTJMS_IT  
*/ ovXk~%_  
public class InsertSort implements SortUtil.Sort{ o>Dd1 j  
X*5N&AJ  
/* (non-Javadoc) UVgSO|Tg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +StsSZ  
*/ r{S DJa  
public void sort(int[] data) { 87!m l  
int temp; l7@cov  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d'3"A"9R7-  
} Ss\?SEq  
} &k-NDh3  
} 7-u'x[=m  
Q&?0 ^;r  
} F8Mf,jnPs  
#qD[dC$[t  
冒泡排序: ]\L+]+u~  
gm!sLZ!X  
package org.rut.util.algorithm.support; 8.I3%u  
3=} P l,  
import org.rut.util.algorithm.SortUtil; }Ujgd2(U  
('\sUZ+5  
/** |R!ozlL{}  
* @author treeroot 9e vQQN6D|  
* @since 2006-2-2 I Xm[c@5l  
* @version 1.0 $% gz, {  
*/ .n)R@&9  
public class BubbleSort implements SortUtil.Sort{ ue'dI   
I'p+9H$  
/* (non-Javadoc) }4h0 {H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :2C <;o  
*/ .c__T {<)[  
public void sort(int[] data) { unbIfl=  
int temp; p0]\QM l1  
for(int i=0;i for(int j=data.length-1;j>i;j--){ EYC ZuJxv  
if(data[j] SortUtil.swap(data,j,j-1); EVw{G<  
} D<<q5gG  
} Wv;,@xTZ  
} ?.lo[X<,*  
} V7p hD3Y  
IXR'JZ?fH  
} 'RzO`-dr  
_VmXs&4  
选择排序: bQwG"N  
E'(nJ  
package org.rut.util.algorithm.support; BF;}9QebmS  
/;1O9HJa  
import org.rut.util.algorithm.SortUtil; Hz==,NR-W  
SBDGms  
/** FH$q,BI!R  
* @author treeroot _G'A]O/BZD  
* @since 2006-2-2 6KXW]a `  
* @version 1.0 c14d0x{  
*/ B I3fk  
public class SelectionSort implements SortUtil.Sort { <hTHY E=  
#M+_Lk3  
/* ^3H:I8gRCl  
* (non-Javadoc) J2! Q09 }5  
* vNl)ltzJF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fqq4Qc)#U&  
*/ Di4GaKa/  
public void sort(int[] data) { Q .h.d))  
int temp; <p/2hHfiD  
for (int i = 0; i < data.length; i++) { N mxh zjJ  
int lowIndex = i; lcjOBu  
for (int j = data.length - 1; j > i; j--) { -qHG*v,  
if (data[j] < data[lowIndex]) { j6XHH&ZEb  
lowIndex = j; m.1-[2{8~  
} J:&.[  
} v>Kh5H5e~  
SortUtil.swap(data,i,lowIndex); g;6/P2w  
} B, H9EX  
} pL`Q+}c}  
-;&I S  
} Bmcc SC;o4  
: xggo  
Shell排序: "e8EA!Ipte  
: D-D+x  
package org.rut.util.algorithm.support; #W3H;'~/5  
_od /)#  
import org.rut.util.algorithm.SortUtil; G e]NA]<  
tgi%#8ZDpz  
/** vR2);ywX  
* @author treeroot Dc$q0|N=z  
* @since 2006-2-2 Pc< "qy  
* @version 1.0 :9%e:-  
*/ c ^.^5@  
public class ShellSort implements SortUtil.Sort{ 1r}i[5  
\=im{(0h  
/* (non-Javadoc) 8AY;WL:;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dzAumWoh  
*/ SG|AJ9  
public void sort(int[] data) { \ERxr   
for(int i=data.length/2;i>2;i/=2){ F8{gJaP x  
for(int j=0;j insertSort(data,j,i); {Bk` Zlki  
} Y;huTZ  
} t!6uz  
insertSort(data,0,1); a=A12<  
} p I8z.JD  
Tj_K5uccU}  
/** UXdc'i g  
* @param data Qj_)^3`e  
* @param j x>TIx[ x  
* @param i }5(_gYr  
*/ Cb?  !+U  
private void insertSort(int[] data, int start, int inc) { 8Q<Nl=g>'  
int temp; N|2d9E  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ax;?~v4Z  
} 26nwUNak  
} N0kCdJv  
} )j~{P  
W)/f5[L  
} 8~R.iqLoX  
 p#]9^oA  
快速排序: knG:6tQ  
O TlqJ  
package org.rut.util.algorithm.support; 1+N'cB!y  
i7r)9^y  
import org.rut.util.algorithm.SortUtil; @-\=`#C**  
'iZwM>l\  
/** [ij) k@.  
* @author treeroot JQ0Z%;"  
* @since 2006-2-2 LTo!DUi`  
* @version 1.0 stUv!   
*/ hLgX0QV  
public class QuickSort implements SortUtil.Sort{ [m h>N$  
`^hA&/1  
/* (non-Javadoc) Oy=0Hsh@x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iJOG"gI&  
*/ f>C+l(  
public void sort(int[] data) { a6./;OC  
quickSort(data,0,data.length-1); Ib{l$#  
} __QnzEF  
private void quickSort(int[] data,int i,int j){ 6V1oZ-:}  
int pivotIndex=(i+j)/2; | |pOiR5  
file://swap Ua 6O~,\  
SortUtil.swap(data,pivotIndex,j); OEjX(F3=  
H,w8+vZ4\  
int k=partition(data,i-1,j,data[j]); wZ\93W-}  
SortUtil.swap(data,k,j); &ZC{ _t  
if((k-i)>1) quickSort(data,i,k-1); 1R~$m  
if((j-k)>1) quickSort(data,k+1,j); 6O6B8  
nKr'cb  
} .u#Hg'oP  
/** ; I-6H5  
* @param data T5ky:{Y(  
* @param i R$ +RTG:E  
* @param j ojf6@p_  
* @return <5pNFj}0;X  
*/ Tr:@Dv.O  
private int partition(int[] data, int l, int r,int pivot) { *v K~t|z  
do{ a BMV6'  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S$fS|N3]%  
SortUtil.swap(data,l,r); jFe8s@7  
} vvxD}p=y  
while(l SortUtil.swap(data,l,r); L v/}&'\(  
return l; u;rmqo1  
} RS}_cm0  
l{C]0^6>i  
} XfVdYmii  
YQ d($  
改进后的快速排序: fcF|m5  
C za }cF  
package org.rut.util.algorithm.support; k`N*_/(|n  
">1wPq&  
import org.rut.util.algorithm.SortUtil; M *3G  
%pOz%v~  
/** WR#h~N 9c  
* @author treeroot 1<#D3CXK  
* @since 2006-2-2  gvo98Id  
* @version 1.0 NR_3nt^h  
*/ GiuE\J9i  
public class ImprovedQuickSort implements SortUtil.Sort { (EWGX |QA  
iz/CC V L  
private static int MAX_STACK_SIZE=4096; |&Mo Qxw@  
private static int THRESHOLD=10; TK' 5NM+4  
/* (non-Javadoc) (VN'1a (  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oz{X"jfu  
*/ Ar/P%$Zfq  
public void sort(int[] data) { LsIZeL^  
int[] stack=new int[MAX_STACK_SIZE]; !BkE-9v?w  
Ce<z[?u  
int top=-1; oowofi(E  
int pivot; oi7k#^  
int pivotIndex,l,r; = E_i  
Y]`=cR`/"  
stack[++top]=0; XZ@+aG_%q  
stack[++top]=data.length-1; _(' @'r  
.@nfqv7{  
while(top>0){ zFO0l).  
int j=stack[top--]; PZV>A!7C8n  
int i=stack[top--]; <HRPloVKo  
,{q#U3  
pivotIndex=(i+j)/2; 0.R3(O  
pivot=data[pivotIndex]; &XCd2  
Gd\/n*j  
SortUtil.swap(data,pivotIndex,j); jmq^98jB  
-wC}JVVcK  
file://partition w ]T_%mdk  
l=i-1; _)Txg2?=  
r=j; <$A/ ('  
do{ {N{eOa<HA  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (oy@j{G)c6  
SortUtil.swap(data,l,r); !+@70|gFF  
} Z*q&^/N  
while(l SortUtil.swap(data,l,r);  bV(BwWm  
SortUtil.swap(data,l,j); W%^!<bFk}m  
^u$=<66  
if((l-i)>THRESHOLD){ Z P|k3   
stack[++top]=i; ]Ri=*KZa  
stack[++top]=l-1; xV14Y9  
} .bp#YU,m  
if((j-l)>THRESHOLD){ 58#nYt  
stack[++top]=l+1; [W$Mn.5<s  
stack[++top]=j; )_! a:  
} S#p_Y^A  
z0ufLxq  
} Il@K8?H@  
file://new InsertSort().sort(data); x@oxIXN  
insertSort(data); 7#UJ444b~  
} r 56~s5A  
/** kkHK~(>G  
* @param data [vb#W!M&|  
*/ 5X];?(VTsb  
private void insertSort(int[] data) { NkGtZ.!pk  
int temp; AdDR<IW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8irTGA  
} +[n#{;]<  
} v.:Q& ]  
} `/R. 5;$|  
Pr%KcR ;  
} E,?IIRg&  
zp f<!x^  
归并排序: Wy6a4oY  
4`oKvL9  
package org.rut.util.algorithm.support; =(TMcu$4`  
7vPG b:y  
import org.rut.util.algorithm.SortUtil; .HY,'oC.  
It/'R-H  
/** 7W4m&+  
* @author treeroot M9Sj@ww  
* @since 2006-2-2 8#A4B2  
* @version 1.0 \A\?7#9\  
*/ d<OdQvW.  
public class MergeSort implements SortUtil.Sort{ qu $FpOJ  
kl1Q:  
/* (non-Javadoc) {GT5   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ea$. +  
*/ sEw ?349Bz  
public void sort(int[] data) { B!)9 >  
int[] temp=new int[data.length]; X5+^b({  
mergeSort(data,temp,0,data.length-1); mhU=^/X  
} xp3^,x;\X  
yNwSiZE X  
private void mergeSort(int[] data,int[] temp,int l,int r){ UjJ&P)  
int mid=(l+r)/2; Bo ywgL|  
if(l==r) return ; 6_yatq5c  
mergeSort(data,temp,l,mid); /u]#dX5  
mergeSort(data,temp,mid+1,r); "BpDlTYM  
for(int i=l;i<=r;i++){ CUC]-]8  
temp=data;  C. uv0  
} c@]G;>o  
int i1=l; D2 o|.e<r  
int i2=mid+1; XD!}uDZ^  
for(int cur=l;cur<=r;cur++){ ]-X\n  
if(i1==mid+1) 5\JV}  
data[cur]=temp[i2++]; y[cc<wm$  
else if(i2>r) "k"+qR`fH  
data[cur]=temp[i1++]; /s(PFN8#Y  
else if(temp[i1] data[cur]=temp[i1++]; n2c(x\DA&  
else Ha ZV7  
data[cur]=temp[i2++]; Eoo[H2=^H  
} jL 3 *m  
} 5mudww`  
_E-{*,7bZS  
} 6b` Jq>v  
6+s&%io4  
改进后的归并排序: $j(4FyH\  
X9" T(`  
package org.rut.util.algorithm.support; fD_3lbiL(  
rniL+/-uU  
import org.rut.util.algorithm.SortUtil; TOq xl  
p!Tac%D+k  
/** Ft:_6T%  
* @author treeroot :m'(8s8  
* @since 2006-2-2 Bv*VNfUm  
* @version 1.0 %%wngiz\  
*/ nddCp~NX  
public class ImprovedMergeSort implements SortUtil.Sort { 0T$`;~  
\b)P4aL  
private static final int THRESHOLD = 10; RJT55Rv{  
l9y%@7  
/* :G^4/A_  
* (non-Javadoc) '}>8+vU`  
* O7&OCo|b%>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vj#m#1\ f  
*/ \ sz](X  
public void sort(int[] data) { s1%2({wP  
int[] temp=new int[data.length]; l<"B[  
mergeSort(data,temp,0,data.length-1); G[zysxd  
} mkBQ TQGT  
QqeF   
private void mergeSort(int[] data, int[] temp, int l, int r) { @k:@mzB7R  
int i, j, k; &Dp&  
int mid = (l + r) / 2; 9]{Ss$W3x  
if (l == r) t[b(erO'  
return; B(- F|q\  
if ((mid - l) >= THRESHOLD) ~g~`,:Qc  
mergeSort(data, temp, l, mid); 'P&r^V\~(/  
else mII8jyg*c  
insertSort(data, l, mid - l + 1); -/7@ A  
if ((r - mid) > THRESHOLD) \IR $~  
mergeSort(data, temp, mid + 1, r); fv>Jn`  
else * _,yK-et  
insertSort(data, mid + 1, r - mid); dftX$TS  
`\BBdQ#bH  
for (i = l; i <= mid; i++) { {+9t!'   
temp = data; "JYWsE  
} :c[T@[  
for (j = 1; j <= r - mid; j++) { OXoEA a  
temp[r - j + 1] = data[j + mid]; EScy!p\*  
} f,-'eW/j  
int a = temp[l]; cZt5;"xgr]  
int b = temp[r]; Au )%w  
for (i = l, j = r, k = l; k <= r; k++) { ,zBc-Cm  
if (a < b) { d _=44( -  
data[k] = temp[i++]; y dzvjp=  
a = temp; cf_X=;yaqy  
} else { qNkX:|j  
data[k] = temp[j--]; {N-*eV9#  
b = temp[j]; :3}K$  
} R*vfp?x  
} >4T7D My  
} MF::At[4   
k@9q5lu;T  
/** xtXK3[s  
* @param data Zl2doXC  
* @param l "1ZVuI  
* @param i I?<ibLpX  
*/ #Pq6q.UB  
private void insertSort(int[] data, int start, int len) { t 9.iWIr  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); I]d?F:cdX  
} &#]||T-  
} 34vH+,!u  
} -r{]9v2j  
} lWU? R  
&G+:t)|S  
堆排序: Pv8AWQQJ  
^DR`!.ttr  
package org.rut.util.algorithm.support; D4+OWbf6  
[rhK2fr:i  
import org.rut.util.algorithm.SortUtil; vRO`hGH  
V4%7Xj  
/** 4-xg+*()  
* @author treeroot Cz4l  
* @since 2006-2-2 M""X_~&I"  
* @version 1.0 79M` ?xm  
*/ ^F/H?V/PX  
public class HeapSort implements SortUtil.Sort{ ]G=^7O]`C!  
Fz_8m4  
/* (non-Javadoc) sJLJVSv8c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qhn>aeW,  
*/ {Hxziyv~Y(  
public void sort(int[] data) { MCfDR#a  
MaxHeap h=new MaxHeap(); js=w!q0)9  
h.init(data); ns8I_H  
for(int i=0;i h.remove(); r P&.`m88n  
System.arraycopy(h.queue,1,data,0,data.length); N5fMMi(O  
} E`3[62C  
Z9PG7h  
private static class MaxHeap{ ]<E\J+5K  
k5GJrK+  
void init(int[] data){ eN I6V/\`  
this.queue=new int[data.length+1]; uacVF[9|W  
for(int i=0;i queue[++size]=data; , @6_sl  
fixUp(size); eZRu{`AF*  
} ^(yU)k3pu  
} .n| M5X  
>K;C?gHo  
private int size=0; a 1pa#WC  
0o&7l%Y/  
private int[] queue; q^kOyA.  
Z <tJ+  
public int get() { U_Va'7  
return queue[1]; s$OnQc2/  
}  jQ?6I1o  
ais"xm<V  
public void remove() { r}])V[V  
SortUtil.swap(queue,1,size--); 09rbu\h  
fixDown(1); 5ayH5=(t  
} mE_?E&T`|  
file://fixdown Y[ toN9,  
private void fixDown(int k) { d+Jj4OnP  
int j; _n_|skG  
while ((j = k << 1) <= size) { *H,vqs\}y  
if (j < size %26amp;%26amp; queue[j] j++; *4F6U  
if (queue[k]>queue[j]) file://不用交换 ,v+~vXO&\  
break; C e1^S[  
SortUtil.swap(queue,j,k); ~!a~ -:#  
k = j; 1-60gI1)  
} (Y%pk76d  
} hbv>Jjd  
private void fixUp(int k) { w#M66=je_  
while (k > 1) { F%pYnHr<  
int j = k >> 1; bjEm=4FI;  
if (queue[j]>queue[k]) aI:G(C?jm  
break; %-eags~sUC  
SortUtil.swap(queue,j,k); h*9s^`9)  
k = j; 8n^v,s>  
} _+hf.[""  
} !B &%!06  
qXJBLIG  
} X!%CYmIRb  
8Yq_6  
} 3jB5F0^r1  
HqpwQ  
SortUtil: B&E qd  
WM_wkvY l  
package org.rut.util.algorithm; `w J^   
6Tn.56X  
import org.rut.util.algorithm.support.BubbleSort; ({}JvSn1  
import org.rut.util.algorithm.support.HeapSort; D> |R.{  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2Po e-=  
import org.rut.util.algorithm.support.ImprovedQuickSort; rmOcA  
import org.rut.util.algorithm.support.InsertSort; ir%?J&C+t  
import org.rut.util.algorithm.support.MergeSort; #sK:q&/G`  
import org.rut.util.algorithm.support.QuickSort; MwN.Ll  
import org.rut.util.algorithm.support.SelectionSort; 3~7X2}qU  
import org.rut.util.algorithm.support.ShellSort; t_PAXj  
}x^q?;7xW  
/** *0GR }k  
* @author treeroot YVMwb@|  
* @since 2006-2-2 Q$NT>d6Q  
* @version 1.0 8MH ZWi  
*/ V9tG2m Lf>  
public class SortUtil { +p:#$R)MW  
public final static int INSERT = 1; I'M,p<B  
public final static int BUBBLE = 2; B1GBQH$Ms  
public final static int SELECTION = 3; qd=&*?  
public final static int SHELL = 4; _{fh/{b1  
public final static int QUICK = 5; M7|k"iz v  
public final static int IMPROVED_QUICK = 6; o+o'!)  
public final static int MERGE = 7; ([y2x.kd  
public final static int IMPROVED_MERGE = 8; $y\\ ?  
public final static int HEAP = 9; u&HLdSHe  
O(~74:#*  
public static void sort(int[] data) { 06FBI?;|=  
sort(data, IMPROVED_QUICK); ^Gc#D:zU  
} .]_ (>^6  
private static String[] name={ y my/`%  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9%i|_c}  
}; bn b:4?d]  
Bw ]Y7 1  
private static Sort[] impl=new Sort[]{ {=5Wi|  
new InsertSort(), {G:dhi  
new BubbleSort(), Sl,\  <a  
new SelectionSort(), WJp9io[GM  
new ShellSort(), Z= P]UD  
new QuickSort(), n2NxO0  
new ImprovedQuickSort(), ev}lb+pr)_  
new MergeSort(), }IM*Vsk  
new ImprovedMergeSort(), &Ff#E?Y4|  
new HeapSort() -RisZ-n*  
}; MlDWK_y_&  
$IZ02ZM$  
public static String toString(int algorithm){ s  bl> i  
return name[algorithm-1]; \uT2)X( N  
} R!mFMw"  
v1s.j2T  
public static void sort(int[] data, int algorithm) { hRU.^Fn#%  
impl[algorithm-1].sort(data); D"x;/I  
} >5rb4  
\e89 >m  
public static interface Sort { '<}N`PS#N  
public void sort(int[] data); ws!pp\F  
} .c+NsI9}  
eXN\w]GE  
public static void swap(int[] data, int i, int j) { N:"S/G>r ;  
int temp = data; ?AMn>v  
data = data[j]; N- !>\n  
data[j] = temp; cPFs K*w  
} avJ%J"j8z  
} 4f)B@A-  
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