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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。 :?CQuEv-  
插入排序: ALGg AX3t  
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package org.rut.util.algorithm.support; 8o-bd_  
S>Z|) I  
import org.rut.util.algorithm.SortUtil; $-vo}k%M  
/** M>l^%`  
* @author treeroot ^J x$t/t  
* @since 2006-2-2 'Qn~H[$/p  
* @version 1.0 Jx|I6 y  
*/ mBk5+KyT  
public class InsertSort implements SortUtil.Sort{ AQ{zx1^2>K  
oq;'eM1,.  
/* (non-Javadoc) 3HiFISA*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =%qEf   
*/ <I=$ry6 8  
public void sort(int[] data) { GsV4ZZ  
int temp; c3xl9S,5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d^V$Z6* ]  
} 68t}w^=  
} 3qM Nl>>  
} ;D2E_!N dt  
KMjg;! y  
} $L}aQlA1JM  
p25Fn`}H  
冒泡排序: Hs?zq  
d"T Ht}  
package org.rut.util.algorithm.support; 30F!kP*E  
Fhj8lVvk  
import org.rut.util.algorithm.SortUtil; "="O >  
g-)mav  
/** =mt?C n}  
* @author treeroot 2x} 6\t  
* @since 2006-2-2 \t.}-u<7{  
* @version 1.0 hWEnn=BW  
*/ f_6`tq m%  
public class BubbleSort implements SortUtil.Sort{ r%=[},JQ  
L-h$Z0]_F  
/* (non-Javadoc) --k:a$Nt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zV.pol  
*/ Z=$  T1|  
public void sort(int[] data) { 4zc<GL3[  
int temp; \,xFg w4  
for(int i=0;i for(int j=data.length-1;j>i;j--){ pR$6,Vi  
if(data[j] SortUtil.swap(data,j,j-1); TT}]wZ  
} ?&c:q3_-Z  
} FjKq%.=#  
} VXKT\9g3A  
} c@du2ICUc  
GESXc $E8  
} 0|Uc d  
i/qTFQst _  
选择排序: \"^% 90F  
8l)  
package org.rut.util.algorithm.support; +;gsRhWk  
HnZPw&*  
import org.rut.util.algorithm.SortUtil; x>3@R0A 1:  
.[j%sGdKl  
/** v'ay.oVzw  
* @author treeroot Es8#]'Rk  
* @since 2006-2-2 Mq\~`8V  
* @version 1.0 S@}4-\  
*/ ?2`$3[ET-  
public class SelectionSort implements SortUtil.Sort { Ft-6m%  
d-$_|G+  
/* Q7a(P  
* (non-Javadoc) Pes =aw  
* 4rp6 C/i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S+T|a:]\7  
*/ uiMIz?+  
public void sort(int[] data) { a%J /0'(d  
int temp; Eo=HNe  
for (int i = 0; i < data.length; i++) { ]|LgVXEpx  
int lowIndex = i; vm}G[  
for (int j = data.length - 1; j > i; j--) { A ,<@m2  
if (data[j] < data[lowIndex]) { uPDaq ]A  
lowIndex = j; _*`q(dYcf  
} 0wvU?z%WK  
} z,+m[x=/N  
SortUtil.swap(data,i,lowIndex); R `Q?J[e  
} =n)#!i  
} in?T]}  
1gAc,s2  
} ee\Gl?VN  
>I:9'"`  
Shell排序: i ~P91  
nOr"K;C  
package org.rut.util.algorithm.support; T ~|PU{  
rr4 _8Rf  
import org.rut.util.algorithm.SortUtil; `#<eA*^g5  
)SD_}BY%k  
/** TP^\e_k  
* @author treeroot JrxP,[qJG  
* @since 2006-2-2 y|LXDq4Wj  
* @version 1.0 h%|9]5(=  
*/ I')x]edU  
public class ShellSort implements SortUtil.Sort{ s9kTuhoK  
n('VQ0b  
/* (non-Javadoc) 8ZzU^x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~Gwas0e Na  
*/ +*Q9.LjV  
public void sort(int[] data) { X.:_"+I;  
for(int i=data.length/2;i>2;i/=2){ ?n73J wH  
for(int j=0;j insertSort(data,j,i); B##C{^5A`  
} YU*46 hA1B  
} }v,W-gA  
insertSort(data,0,1); >DkN+S  
} IcO9V<Q|  
JO]`LF]  
/** *%z<P~}  
* @param data 4bFv"b  
* @param j M_|M&lR>  
* @param i )3+xsnv  
*/ M55e=  
private void insertSort(int[] data, int start, int inc) { R,fMZHAG  
int temp; @m }rQT  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Z={UM/6w  
} 0<6rU  
} G >I.  
} 5mDVFb 3a  
!Q<8c =f  
} F<H`8*q9  
=kyJaT^5[  
快速排序: ^Osd/g  
-zkW\O[  
package org.rut.util.algorithm.support; G}Q}H*  
)^V5*#69D  
import org.rut.util.algorithm.SortUtil; q{jk.:;'  
>Lo6='G  
/** (e>RNn\  
* @author treeroot +5N^TnBtBL  
* @since 2006-2-2 v3iDh8.__  
* @version 1.0 weTK#O0@v  
*/ HCfS)`  
public class QuickSort implements SortUtil.Sort{ ^F;Z%5P=  
>' BU*  
/* (non-Javadoc) hVTyv"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P\Pc/[ Z7  
*/ z|oA{VxW>  
public void sort(int[] data) { 9;m#>a@Y  
quickSort(data,0,data.length-1); 7%~VOB  
} Y2ah zB  
private void quickSort(int[] data,int i,int j){ Cf WK6>  
int pivotIndex=(i+j)/2; SF78 s:_!_  
file://swap +c~O0U1  
SortUtil.swap(data,pivotIndex,j); c +"O\j'  
Hzk1LKsT#  
int k=partition(data,i-1,j,data[j]); h|$zHm  
SortUtil.swap(data,k,j); )dzjz%B)  
if((k-i)>1) quickSort(data,i,k-1); (STWAwK-  
if((j-k)>1) quickSort(data,k+1,j); g,{Ei]$>I  
1.u gXD  
} tZ*f~yW  
/** 3XYIbXnk  
* @param data 7,&3=R <  
* @param i */fs.G:P  
* @param j iZVT% A+q  
* @return EeF n{_  
*/ l{%Op\  
private int partition(int[] data, int l, int r,int pivot) { >cU*D:  
do{ .DM1Knj  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); AQ_#uxI'oa  
SortUtil.swap(data,l,r); NjCLL`?f  
} }I'>r(K  
while(l SortUtil.swap(data,l,r); BLYk <m  
return l; Fg}5V,  
} da7x 1n$D  
tpy :o(H  
} IhFw{=2*  
Y/Gswcz  
改进后的快速排序: VN55!l'OV  
P^d . ,  
package org.rut.util.algorithm.support; V~%WKQ  
XDv7#Tv_wv  
import org.rut.util.algorithm.SortUtil; _sD]Viqc  
z 2EI"'4\9  
/** @,f,tk=\S  
* @author treeroot WZy6K(18"'  
* @since 2006-2-2 w7]p9B  
* @version 1.0 V'BZ=.=  
*/ c)P%O  
public class ImprovedQuickSort implements SortUtil.Sort { ,"lBS?  
2H32wpY ,l  
private static int MAX_STACK_SIZE=4096; KE|u}M@v6  
private static int THRESHOLD=10; ]nr BmKB  
/* (non-Javadoc) iLQt9Hyk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5|B(K @<  
*/ :_[cT,3  
public void sort(int[] data) { `^4>^  
int[] stack=new int[MAX_STACK_SIZE]; }5c'ui!3H  
&>^Ympr  
int top=-1; 9#$V1(}?  
int pivot; :?of./Df|  
int pivotIndex,l,r; sp]y!zb"5  
DB?PS^-2  
stack[++top]=0; *ytd.^@r  
stack[++top]=data.length-1; Vm%ux>}  
:|6D@  
while(top>0){ !5 :1'$d]H  
int j=stack[top--]; /JY ph^3][  
int i=stack[top--]; $S-;M0G x  
=.2cZwxX$  
pivotIndex=(i+j)/2; {]^%?]e  
pivot=data[pivotIndex]; ba:du |Ec  
VDI S`E  
SortUtil.swap(data,pivotIndex,j); 0$dNrq  
`uJ l<kHI  
file://partition nhaoh!8A6  
l=i-1; c3 ]^f6)?  
r=j; FXwK9 %  
do{ l4.@YYzbp.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \YF!< 2|[  
SortUtil.swap(data,l,r); E$zq8-p|  
} F$.s6Hh.  
while(l SortUtil.swap(data,l,r); 9'L0Al~L  
SortUtil.swap(data,l,j); }[R@HmN   
k |aOUW  
if((l-i)>THRESHOLD){ gJfL$S'w  
stack[++top]=i; |4*2xDcl  
stack[++top]=l-1; S{|)9EKw  
} 1+ARV&bc  
if((j-l)>THRESHOLD){ z_0lMX`  
stack[++top]=l+1; ?d`+vHK]>  
stack[++top]=j; @V CQ4X7T  
} F[giq 1#  
%cif0Td  
} I }I/dh  
file://new InsertSort().sort(data); r*xw\  
insertSort(data); i(;u6Rk  
} ^i k|l=  
/** 5'[X&r %#  
* @param data kEDZqUD  
*/ =ZL}Av}  
private void insertSort(int[] data) { gMMd=  
int temp; Wb(0Szk;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ln -?/[E  
} s3%8W==rBW  
} ]xeyXw84k  
} u1Yp5jp^K  
zt%Fvn4/pF  
} 6M|%nBN$|  
'GoeVq  
归并排序: K1WoIv<Ym  
2g545r.  
package org.rut.util.algorithm.support; +Y[+2=lO  
}iloX#  
import org.rut.util.algorithm.SortUtil; p&M'DMj+  
BC[d={_-  
/** zQ _[wM-  
* @author treeroot ^$ bhmJYT  
* @since 2006-2-2 bj^m<}   
* @version 1.0 PTZ1 oD  
*/ xT8"+}  
public class MergeSort implements SortUtil.Sort{ D/`E!6Fk=  
a];g  
/* (non-Javadoc) B)`X 7uG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mf'1.{  
*/ JH;DVPX9z  
public void sort(int[] data) { z Pc;[uHT  
int[] temp=new int[data.length]; |O2PcYNu  
mergeSort(data,temp,0,data.length-1); @S92D6  
} /Q_\h+ `  
g3rFJc  
private void mergeSort(int[] data,int[] temp,int l,int r){ 0-HE, lv  
int mid=(l+r)/2; cyE2=  
if(l==r) return ; 21j+c{O  
mergeSort(data,temp,l,mid); l d9#4D[#  
mergeSort(data,temp,mid+1,r); dfcG'+RU}  
for(int i=l;i<=r;i++){ rI789 q  
temp=data; ^)pY2t<^  
} SLo/7$rct  
int i1=l; 1ouTZ'c?  
int i2=mid+1; &3J#"9 _S  
for(int cur=l;cur<=r;cur++){ Q[KR,k  
if(i1==mid+1) x"80c(i  
data[cur]=temp[i2++]; w}b+vh^3Wy  
else if(i2>r) 'wt|buu-H  
data[cur]=temp[i1++]; 7mNskb|  
else if(temp[i1] data[cur]=temp[i1++]; , &SJ?XAs  
else 20)Il:x  
data[cur]=temp[i2++]; 9@B+$~:}7  
} K gX)fj  
} Us5 JnP5  
7 '/&mX>  
} t79MBgZ  
< i|+p1t  
改进后的归并排序: GAlO<Mu  
}tPl?P'`  
package org.rut.util.algorithm.support; 0iHI "9z  
s_TM!LRUcw  
import org.rut.util.algorithm.SortUtil; k5YDqG n'q  
TbuR?#  
/** ;|y,bo@sJJ  
* @author treeroot NU[{oI<a  
* @since 2006-2-2 Z}wAh|N-  
* @version 1.0 ! N p  
*/ L\[jafb_`  
public class ImprovedMergeSort implements SortUtil.Sort { enj2xye%Y  
Z5=!R$4  
private static final int THRESHOLD = 10; R YNz TA  
fZO /HzX  
/* OUPpz_y  
* (non-Javadoc) (I5ra_FVs  
* n6}1{\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e1-=|!U7#  
*/ 3a0C<hW  
public void sort(int[] data) { iC]}M  
int[] temp=new int[data.length]; ;`+,gVrp  
mergeSort(data,temp,0,data.length-1); |7-tUHMo[  
} S}/CzQ  
ajAEGD2Zq  
private void mergeSort(int[] data, int[] temp, int l, int r) { wkGF&U  
int i, j, k; [% jg;m  
int mid = (l + r) / 2; UPC& O  
if (l == r) pK`rm"6G  
return; [~3p+  
if ((mid - l) >= THRESHOLD) s"/8h#!zv  
mergeSort(data, temp, l, mid); :FSkXe2yy0  
else Q7\Ax0  
insertSort(data, l, mid - l + 1); L!Ro`6|7;  
if ((r - mid) > THRESHOLD) ^:0?R/A  
mergeSort(data, temp, mid + 1, r); mR^D55k  
else /d4xHt5a  
insertSort(data, mid + 1, r - mid); *Pl[a1=o  
3,?y !  
for (i = l; i <= mid; i++) { 8/CGg_C1  
temp = data;  P/Z o  
} -|lnJg4  
for (j = 1; j <= r - mid; j++) { l;2bBx7vW  
temp[r - j + 1] = data[j + mid]; f { ueI<  
} T^'i+>F!w  
int a = temp[l]; HUJ $e2[  
int b = temp[r]; gLH(Wr~(a  
for (i = l, j = r, k = l; k <= r; k++) { M3V[p9>  
if (a < b) { J L3A/^  
data[k] = temp[i++]; (F)zj<{f  
a = temp; nxt1Y04,H  
} else { !EFd- fk  
data[k] = temp[j--]; f t7wMi  
b = temp[j]; Di6:r3sEO  
} QWoEo  
} 8+gn Wy  
} 5v3B8 @CsA  
j\a?n4g -  
/** 5s>9v  
* @param data & mWq'h  
* @param l R[V%59#{Z  
* @param i ,[~EThcq  
*/ y.nw6.`MR  
private void insertSort(int[] data, int start, int len) { >3bpa<M_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]?r8^LyZ4  
} )Q8Q#S  
} IE6/ E  
} ^uj+d"a)  
} K!9=e7|P  
>#ou8}0  
堆排序: b{oNV-<&{  
8,R]R=  
package org.rut.util.algorithm.support; BYY>;>V  
$5A XE;~{  
import org.rut.util.algorithm.SortUtil; ]X5*e'  
YGHWO#!Gp  
/** 'G^=>=w|Nv  
* @author treeroot *~vRbD$q  
* @since 2006-2-2  lG{J  
* @version 1.0 n0m9|T&  
*/ l YhwV\3  
public class HeapSort implements SortUtil.Sort{ &F:7U!  
e nNn*.*|  
/* (non-Javadoc) %*uqtw8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]}B&-Yp  
*/ j7W_%Yk|E  
public void sort(int[] data) { +n:#Uf)  
MaxHeap h=new MaxHeap(); pZR^ HOq  
h.init(data); '!0CwZ 7  
for(int i=0;i h.remove(); $^l=#tV  
System.arraycopy(h.queue,1,data,0,data.length); sq^,l6es>  
} +vuW 9  
D|S)/o6  
private static class MaxHeap{ o ).pF">jh  
JdAjKN  
void init(int[] data){ *be+x RY  
this.queue=new int[data.length+1]; 52~k:"c  
for(int i=0;i queue[++size]=data; ZN?(lt)u9  
fixUp(size); T>z@;5C  
} C }[u[)  
}  2AluH8X/  
ufo?ZFq@$L  
private int size=0; 'FVT"M~  
qq/Cn4fN8  
private int[] queue; Vg3&:g5 /  
$ p0s  
public int get() { C{Zv.+F  
return queue[1]; _#+9)*A  
} ?=vwr,ir  
9xz`V1mIL  
public void remove() { ZO`d  
SortUtil.swap(queue,1,size--); eyM3W}[S$/  
fixDown(1); DXiD>1(q  
} lL^7x  
file://fixdown fG{oi(T  
private void fixDown(int k) { q8D1MEBL`  
int j; D9Z5g3s7R  
while ((j = k << 1) <= size) { 5|b/G  
if (j < size %26amp;%26amp; queue[j] j++; U".-C`4v  
if (queue[k]>queue[j]) file://不用交换 w;_Ds  
break; c1/x,1LnMf  
SortUtil.swap(queue,j,k); W) _B(;$]  
k = j; #-W5$1  
} Xu$*ZJ5w  
} LiRY -;8=  
private void fixUp(int k) { n5 i}J/Sa2  
while (k > 1) { $@x kKe"  
int j = k >> 1; Ob+&!XTp?0  
if (queue[j]>queue[k]) ,..b)H5n  
break; }8SHw|-  
SortUtil.swap(queue,j,k); okv7@8U#p  
k = j; -bE|FFU  
} BO_^3Me*  
} WIghP5%W  
=VU2#O  
} W1s|7  
a$GKrc,z  
} lD pi1]2  
phdN9<Z  
SortUtil: $Yka\tS'  
`#ztp)&  
package org.rut.util.algorithm; ox6rR  
j{=%~  
import org.rut.util.algorithm.support.BubbleSort; L:<'TXsRA  
import org.rut.util.algorithm.support.HeapSort; GZ={G2@=I  
import org.rut.util.algorithm.support.ImprovedMergeSort;  #59zv=  
import org.rut.util.algorithm.support.ImprovedQuickSort; g9XtE  
import org.rut.util.algorithm.support.InsertSort; RHbwq]  
import org.rut.util.algorithm.support.MergeSort; ;Y\,2b, xh  
import org.rut.util.algorithm.support.QuickSort; Ox Z:5ps  
import org.rut.util.algorithm.support.SelectionSort; V*}zwm s6  
import org.rut.util.algorithm.support.ShellSort; OT i3T1&  
5ov%(QI  
/** 7 w,FA  
* @author treeroot [2V/v  
* @since 2006-2-2 &v,p_'k  
* @version 1.0 ?C35   
*/ "Ycd$`{Vgt  
public class SortUtil { Umg81!  
public final static int INSERT = 1; ~py0Vx,F  
public final static int BUBBLE = 2; AW5g (  
public final static int SELECTION = 3; )AXH^&  
public final static int SHELL = 4; 1o>R\g3  
public final static int QUICK = 5; uW=NH;u  
public final static int IMPROVED_QUICK = 6; KTt$Pt/.  
public final static int MERGE = 7; #Ca's'j&f  
public final static int IMPROVED_MERGE = 8; B}+9U  
public final static int HEAP = 9; -FV'%X$i  
T0%TeFY  
public static void sort(int[] data) { /}_c7+//  
sort(data, IMPROVED_QUICK); \[1CDz=}1  
} ^1=|(Z/  
private static String[] name={ $dZ>bXUw:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z"n'/S:q  
}; o~o6S=4,}  
2Z;`#{  
private static Sort[] impl=new Sort[]{ > 0Twr  
new InsertSort(), 9 yW ~79n  
new BubbleSort(), 3:~l2KIP4  
new SelectionSort(), 2c"N-c&A  
new ShellSort(), tFvgvx\:  
new QuickSort(), !M]%8NTt2  
new ImprovedQuickSort(), Ku0H?qft(  
new MergeSort(), (o*e<y,}W  
new ImprovedMergeSort(), L* k hj3;  
new HeapSort() 9QOr,~~s  
}; uhTKCR~  
;h,R?mU  
public static String toString(int algorithm){ $ DDSN  
return name[algorithm-1]; C!ZI&cD9  
} w69>tC  
FylWbQU9  
public static void sort(int[] data, int algorithm) { 2I]]WBW#:  
impl[algorithm-1].sort(data); OH$ F >wO  
} %rM-"6Q  
JdaFY+f :  
public static interface Sort { ",~ b2]ym  
public void sort(int[] data); lq>*x=<  
} \3t,|%v  
QO5OnYh  
public static void swap(int[] data, int i, int j) { "C:rTIH  
int temp = data; uIYcmF\?  
data = data[j]; ?-pxte8  
data[j] = temp; ojN`#%X  
} *oEv,I_  
} W;fH&r)d@  
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