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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。 rxx VLW  
插入排序: #Hy9 ;Q  
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package org.rut.util.algorithm.support; .mnkV -m  
2kgSIvk\  
import org.rut.util.algorithm.SortUtil; ;qzn_W  
/** e9\_H=t+  
* @author treeroot YPs9Pqkn  
* @since 2006-2-2 ?5G; =#I  
* @version 1.0 4{,!'NA  
*/ 0 Swu]OE  
public class InsertSort implements SortUtil.Sort{ UN<$F yb  
auB+g'l  
/* (non-Javadoc) (wH+0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G_WFg$7G%  
*/ 1)u,%  
public void sort(int[] data) { r" |do2s  
int temp; xJ^B.;>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]'<}kJtN.  
} iqF|IVPoi  
} $U&p&pgH=W  
} .' v$PEy  
nr>Yj?la  
} 0#5&*  
a U<+ `  
冒泡排序: h5vetci/  
6R2F,b(_  
package org.rut.util.algorithm.support; 0W 1bZPM  
,-n_( U  
import org.rut.util.algorithm.SortUtil; =q[+ e(,3  
[IyC}lSW^-  
/** aYtW!+#  
* @author treeroot K=4|GZ~p}`  
* @since 2006-2-2  >YdLB@  
* @version 1.0 [pt U}  
*/ [$]-W$j+  
public class BubbleSort implements SortUtil.Sort{ D7IhNWrgj  
}Oe4wEYN)  
/* (non-Javadoc) -g"Wi@Qr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >N0L  
*/ 1n)YCSA  
public void sort(int[] data) { Bi/E{k,  
int temp; -Zg.o$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Lm^vS u  
if(data[j] SortUtil.swap(data,j,j-1); |@B|o-  
} xgsEe3|  
} /+<G@+(  
} 6m:$RW  
} p`"Ic2xPJ  
on7? V<  
} l >oJ^J  
ErQGVE;zk  
选择排序:  u7&5t  
7 /" Z/^  
package org.rut.util.algorithm.support; *I9O63  
nWd;XR6|  
import org.rut.util.algorithm.SortUtil; z@<jZM  
{H=<5   
/** &j"_hFhv  
* @author treeroot ND3|wQ`M0  
* @since 2006-2-2 r.]IGE|  
* @version 1.0 U @}r?!)"f  
*/ #]*d8  
public class SelectionSort implements SortUtil.Sort { X4k|k>  
'O 7>w%#  
/* i_y%HG  
* (non-Javadoc) O^~nf%  
* a0k/R<4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MbQ%'z6D  
*/ WQ{^+C9g'1  
public void sort(int[] data) { {(d 6of`C_  
int temp; (V}?y:)  
for (int i = 0; i < data.length; i++) { )ItW}1[I  
int lowIndex = i; xd`\Ai  
for (int j = data.length - 1; j > i; j--) { 7<*g'6JG[  
if (data[j] < data[lowIndex]) { |lIgvHgg  
lowIndex = j; H:q;IYE+a  
} U]M5&R=?  
} :c:}_t{%  
SortUtil.swap(data,i,lowIndex); 0,cU^HMA  
} k]c$SzJ>/  
} wEl/s P  
B?d+^sz]  
} y+' ,jM  
( _MY;S  
Shell排序: ]0")iY_  
A*kN I  
package org.rut.util.algorithm.support; *"V) h I5  
QwnqysNx4  
import org.rut.util.algorithm.SortUtil; S`h yRw  
#Fh:z4  
/** S:c d'68D  
* @author treeroot S;u 2B_/  
* @since 2006-2-2 -;YhQxxC}L  
* @version 1.0 h\6 t\_^\  
*/ 4=njM`8Y'  
public class ShellSort implements SortUtil.Sort{ [mo9?  
#,SPV&  
/* (non-Javadoc) Tog'3k9Uw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ka$la;e3  
*/ 1/=6s5vS}  
public void sort(int[] data) { m>DJ w7<  
for(int i=data.length/2;i>2;i/=2){ SS&G<3Ke  
for(int j=0;j insertSort(data,j,i); @f#6Nu  
} o#-^Lg&  
} ^HWa owy=  
insertSort(data,0,1); RV@mAw.T  
} NC"X{$o2  
G#.q%Up  
/** (Wn^~-`=+  
* @param data Xz'o<S  
* @param j -{p~sRc&  
* @param i 5[`f(;  
*/ Cv< s|  
private void insertSort(int[] data, int start, int inc) { ^= qL[S6/M  
int temp; M?qvI  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C)&BtiUN/  
} =]LAL w  
} fHgvh&FU  
} CeUC[cUQU  
|Syulus  
} WFfn:WSWU  
:!wt/Y  
快速排序: l(Uwci  
r rs0|=  
package org.rut.util.algorithm.support; pvdCiYo1r  
G9~ 4?v6:  
import org.rut.util.algorithm.SortUtil; /!pJ"@  
\[]4rXZN0  
/** N}'2GBqfU4  
* @author treeroot j HEt   
* @since 2006-2-2 m :2A[H+  
* @version 1.0 q]Af I(  
*/ D1wONss  
public class QuickSort implements SortUtil.Sort{ {Ok]$0L  
-=2V4WU~  
/* (non-Javadoc) $g }aH(vf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V17!~  
*/ Eu[/* t+l  
public void sort(int[] data) { 4 udW 6U  
quickSort(data,0,data.length-1);  qy/t<2'  
} Wfsd$kN6{  
private void quickSort(int[] data,int i,int j){ be HEAQ  
int pivotIndex=(i+j)/2; d_Z?i#r0l  
file://swap =F46v{la  
SortUtil.swap(data,pivotIndex,j); lB   
RVh{wg  
int k=partition(data,i-1,j,data[j]); \$xj>b;  
SortUtil.swap(data,k,j); AK&=/[U>  
if((k-i)>1) quickSort(data,i,k-1); 6P0 2=  
if((j-k)>1) quickSort(data,k+1,j); -o@L"C>   
Cr YPcvd6  
} )< p ~  
/**  ^]?ju L  
* @param data R|]n;*y  
* @param i z6 .^a-sU5  
* @param j m-<m[49  
* @return r"`7ezun:  
*/ CEBa,hp@  
private int partition(int[] data, int l, int r,int pivot) { g Cx#&aXS  
do{ 2u(G:cR  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); sE[ Yg8yAt  
SortUtil.swap(data,l,r); h*\u0yD)  
} bv}e[yH  
while(l SortUtil.swap(data,l,r); E^m;Ab=  
return l; M]SeNYDy  
} eaDG7+iS  
D=}\]Krmay  
} c6VyF=2q  
)D&xyC}  
改进后的快速排序: HbJ^L:/  
kG`&Z9P  
package org.rut.util.algorithm.support; XmN8S_M>v  
-[[( Zx  
import org.rut.util.algorithm.SortUtil; &W{v(@  
wJh/tb=$o  
/** ?H eUU  
* @author treeroot <,y> W!  
* @since 2006-2-2 P[tYu:  
* @version 1.0 TrBW0Bn>p  
*/ U|x#'jGo'  
public class ImprovedQuickSort implements SortUtil.Sort { H^M>(kT#&  
Cl!9/l?z  
private static int MAX_STACK_SIZE=4096; mB"1QtD  
private static int THRESHOLD=10; dj{~!}  
/* (non-Javadoc) 0!M'z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >+):eB L  
*/ T@a|*.V  
public void sort(int[] data) { z#2n+hwE  
int[] stack=new int[MAX_STACK_SIZE];  |^"0bu"  
S:1g(f*85  
int top=-1; i:1 @ vo  
int pivot; zpZfsn!  
int pivotIndex,l,r; \}_,g  
- B?c F9  
stack[++top]=0; w8a49Fv  
stack[++top]=data.length-1; \J;_%-Z  
I:("f+ H  
while(top>0){ DKF '*  
int j=stack[top--]; 5<YL^m{/L  
int i=stack[top--]; wOsg,p;\'  
I{=Yuc  
pivotIndex=(i+j)/2; BAtjYPX'w  
pivot=data[pivotIndex]; jwP5pu  
3cF8DNh  
SortUtil.swap(data,pivotIndex,j); w/*m_O\!  
5GGO:  
file://partition nkf7Fq}  
l=i-1; 7mE9Zo1  
r=j; 8{_lB#<[E  
do{ gU1Pb]]  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); W6B"QbHYz  
SortUtil.swap(data,l,r); ?$l|];m)-  
} tHK>w%|\R  
while(l SortUtil.swap(data,l,r); K D?b|y @  
SortUtil.swap(data,l,j); bP>Kx-%q  
'.&Y)A6!  
if((l-i)>THRESHOLD){ D}Sww5ZmP  
stack[++top]=i; /Q_ Dd  
stack[++top]=l-1; Hz)i.AA 4  
} u08QE,  
if((j-l)>THRESHOLD){ QW tDZ>  
stack[++top]=l+1; (e0(GOqf4  
stack[++top]=j; wx YGr`f  
} Z B`d&!W>  
ck\W'Y*Q7  
} iu3L9UfL[  
file://new InsertSort().sort(data);  {8h[Bd  
insertSort(data); 5lM2nhlf'b  
} I&31jn_o /  
/** # 1dg%  
* @param data ;#:AM;  
*/ -& =dl_m  
private void insertSort(int[] data) { X0REC%  
int temp; e5 }amrz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B{*{9!(l9  
} SMzq,?-`  
} >Fs/Wet  
} </u=<^ire  
*QV"o{V  
} ambr}+}  
{Ay dt8  
归并排序: ~9E_L?TW*  
T^(> 8/O  
package org.rut.util.algorithm.support; L#zD4L  
P-3f51Q  
import org.rut.util.algorithm.SortUtil; LD1&8kJ*l  
Pc2!OQC'""  
/** UtP|<]{  
* @author treeroot -Jw4z# /-  
* @since 2006-2-2 ,[)l>!0\H  
* @version 1.0 ~?FhQd\Q  
*/ gn&Zt}@[  
public class MergeSort implements SortUtil.Sort{ imeE&  
4QTHBT+2`  
/* (non-Javadoc) 0^sY>N"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f 9Kt>2IN  
*/ %S'+x[ 4W  
public void sort(int[] data) { qR_>41JU"  
int[] temp=new int[data.length]; EO~L.E%W  
mergeSort(data,temp,0,data.length-1); ~$J(it-a  
} ~UZ3 lN\E  
&*%x]fQ@  
private void mergeSort(int[] data,int[] temp,int l,int r){ x~vNUyEN)  
int mid=(l+r)/2; "r* `*1  
if(l==r) return ; QXN_ ?E,g/  
mergeSort(data,temp,l,mid); IWq#W(yM  
mergeSort(data,temp,mid+1,r); &N._}ts  
for(int i=l;i<=r;i++){ JO+tY[q  
temp=data; &T~X`{V]`  
}  @O koT:  
int i1=l; EK Vcz'w  
int i2=mid+1; 0%dOi ko  
for(int cur=l;cur<=r;cur++){ Kk6=61}A  
if(i1==mid+1) bd~m'cob>  
data[cur]=temp[i2++]; kS8?N`2}LV  
else if(i2>r) b^Re947{g  
data[cur]=temp[i1++]; gXJBb+P   
else if(temp[i1] data[cur]=temp[i1++]; QA*<$v  
else [ 'lu;1-,  
data[cur]=temp[i2++]; vg1J N"S[  
} hlB\Xt  
} (+[%^96   
WFh.oe8  
} (D) KU9B>  
$`55 E(  
改进后的归并排序: _p*8ke  
6{Q-]LOc[.  
package org.rut.util.algorithm.support; G(TFv\`vH  
b&mA1w[W]  
import org.rut.util.algorithm.SortUtil; #Pp:H/b  
3ie k >'T  
/** RYjK4xT?Y/  
* @author treeroot h]s~w  
* @since 2006-2-2 eNK[P=-  
* @version 1.0 OtmDZ.t;`  
*/ M{{kO@P"9  
public class ImprovedMergeSort implements SortUtil.Sort { Z )M "`2Ur  
_eOC,J<-~  
private static final int THRESHOLD = 10; ,1#? 0q  
LwK]fFtu  
/* o_BTo5]  
* (non-Javadoc) jD6HCIjd'  
* ]i$y;]f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :sJ7Wok6~  
*/ C| ~ A]wc=  
public void sort(int[] data) { 2cH RiRT  
int[] temp=new int[data.length]; gTXpaB<  
mergeSort(data,temp,0,data.length-1); rB$~,q&.V  
} ,MNv}w@  
 E|"SM A,  
private void mergeSort(int[] data, int[] temp, int l, int r) { m^}|LB:5  
int i, j, k; YHQ]]#'  
int mid = (l + r) / 2; 3HpqMz  
if (l == r) M7cD!s@'I  
return; r)pt(*KHo  
if ((mid - l) >= THRESHOLD) Sb/?<$>  
mergeSort(data, temp, l, mid); ,"(G  
else )>:~XA|?  
insertSort(data, l, mid - l + 1); A}(]J!rc  
if ((r - mid) > THRESHOLD)  pE)NSZ  
mergeSort(data, temp, mid + 1, r); Ee2P]4_d  
else "u!gfG?oH  
insertSort(data, mid + 1, r - mid); dX cbS<  
?J2A1iuq3  
for (i = l; i <= mid; i++) { -je} PwT  
temp = data; z7bJV/f  
} `}l%61n0  
for (j = 1; j <= r - mid; j++) { tr[}F7n9  
temp[r - j + 1] = data[j + mid]; X$we\t  
} #dUKG8-HJ  
int a = temp[l]; < -`.u`  
int b = temp[r]; ,%*UF6B M  
for (i = l, j = r, k = l; k <= r; k++) { BX0lk  
if (a < b) { $h{m")]  
data[k] = temp[i++]; :^3) [.m  
a = temp; ;rT'~?q  
} else { Y:ly x-lj  
data[k] = temp[j--]; I"88O4\@  
b = temp[j]; Hyy b0c^=  
} QIGUi,R  
} ey DV911  
} C6;2Dd]"N  
w~b:9_reY  
/** $:F+Nf 8  
* @param data n9+33^ PT  
* @param l ?l/6DT>e  
* @param i pD%(Y^h?  
*/ O D}RnKL  
private void insertSort(int[] data, int start, int len) { ~~OFymQ%?q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); CvY+b^;  
} g %f5hy  
} *#XZ*Ga  
} '6dVe 2V  
} \Mg_Q$  
1n8[fgz  
堆排序: e.n(NW  
"=Br&FN{|  
package org.rut.util.algorithm.support; 1P!)4W  
[P`e @$  
import org.rut.util.algorithm.SortUtil; #u hUZq  
2e1KF=N+  
/** 6WY/[TC-  
* @author treeroot @=Q!a (g  
* @since 2006-2-2 XGx[Ny_A2  
* @version 1.0 o%t4WQ|bj  
*/ 5CFNBb%Xy  
public class HeapSort implements SortUtil.Sort{ Qu61$!  
VV$t*9w  
/* (non-Javadoc) ,/{e%J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {JgY-#R?{(  
*/ gm-[x5O"  
public void sort(int[] data) { ZZT #V%Q=u  
MaxHeap h=new MaxHeap(); ,0W^"f.g{m  
h.init(data); 5g7@Dj,.  
for(int i=0;i h.remove(); e?]5q ez  
System.arraycopy(h.queue,1,data,0,data.length); EnM  
} .HS6DOQ  
oFWb.t9<  
private static class MaxHeap{ t5-O-AI[b{  
B}iEhWO6  
void init(int[] data){ k8w\d+!v  
this.queue=new int[data.length+1]; 8z#Qp(he  
for(int i=0;i queue[++size]=data; F^u12R)  
fixUp(size); >NKJ@4Y  
} x s{pGQ6Q  
} f jx`|MJ  
nqyD>>  
private int size=0; _? gCOr  
xqG<R5k>>  
private int[] queue; bE_8NA"2  
qiNVaV\wr|  
public int get() { g_Z tDxz  
return queue[1]; L.HeBeO  
} Al-`}g+^  
:>1nkm&Eg  
public void remove() { ==dKC;  
SortUtil.swap(queue,1,size--); YaC%69C'  
fixDown(1); FH~:&;  
} !T`oHs  
file://fixdown Xqf,_I=V  
private void fixDown(int k) { |THpkfW  
int j; :o'x?]  
while ((j = k << 1) <= size) { o!M8V ^vW  
if (j < size %26amp;%26amp; queue[j] j++; 4Z)s8sDKW  
if (queue[k]>queue[j]) file://不用交换 ~ bLx2=-"  
break; \R#SoOd  
SortUtil.swap(queue,j,k); +=3=%%?C  
k = j; 6X \g7bg  
} W;vNmg}mn  
} tk"+ u_uw  
private void fixUp(int k) { nuce(R  
while (k > 1) { X94a  
int j = k >> 1; mJSfn"b}K  
if (queue[j]>queue[k]) c#n 2 !  
break; }s~c(sL?;  
SortUtil.swap(queue,j,k); %fj5 ;}E.  
k = j; 6cH8Jr _  
} ORExI.<`W  
} }t H$:Z  
0pZvW  
} VXeO}>2S  
EgjJywNhd2  
} \ 2\{c1df  
>+2&7u  
SortUtil: -> cL)  
>P/36'  
package org.rut.util.algorithm; k#].nQG  
QZzamT)"  
import org.rut.util.algorithm.support.BubbleSort; :X0L6y)u  
import org.rut.util.algorithm.support.HeapSort; p `"k=tZ{  
import org.rut.util.algorithm.support.ImprovedMergeSort; aB ,-E>+  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5'zXCHt  
import org.rut.util.algorithm.support.InsertSort; '2(m%X\6  
import org.rut.util.algorithm.support.MergeSort; HlGSt$woX  
import org.rut.util.algorithm.support.QuickSort; -o ).<&#  
import org.rut.util.algorithm.support.SelectionSort; UqP{Cyy{  
import org.rut.util.algorithm.support.ShellSort; ]\(8d[ 4  
W XQ@kQD  
/** X6HaC+P  
* @author treeroot 02-ql F@i  
* @since 2006-2-2 MEDh  
* @version 1.0 kK? SG3  
*/ PYkhY;*  
public class SortUtil { M+/G>U  
public final static int INSERT = 1; Vj*-E  
public final static int BUBBLE = 2; ^CkMk 1  
public final static int SELECTION = 3; H1bR+2s  
public final static int SHELL = 4; >e;-$$e  
public final static int QUICK = 5; qRt!kWW  
public final static int IMPROVED_QUICK = 6; +?_!8N8  
public final static int MERGE = 7; >US*7m }  
public final static int IMPROVED_MERGE = 8; $L/`nd  
public final static int HEAP = 9; :{7+[LcH7  
/R# zu_i  
public static void sort(int[] data) { ">H*InF  
sort(data, IMPROVED_QUICK); {9x_E {  
} ATs_d_Sz  
private static String[] name={ Z vysLHj  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^m>4<~/  
}; 4V+bE$Wu  
1h,iWHC  
private static Sort[] impl=new Sort[]{ Itl8#LpLM  
new InsertSort(), l1+l@r\  
new BubbleSort(), f"MID6  
new SelectionSort(), + :MSY p  
new ShellSort(), @Cj!MZ=T  
new QuickSort(), $RD~,<oEm  
new ImprovedQuickSort(), ?cV,lak  
new MergeSort(), NoI|Dz  
new ImprovedMergeSort(), o4Q?K.9c  
new HeapSort() QYH-"-)  
}; \nl(tU#j  
SI7rTJ]/  
public static String toString(int algorithm){ 3c<aI =$^  
return name[algorithm-1]; LF dvz0  
} z0 "DbZ;d  
>*-%:ub  
public static void sort(int[] data, int algorithm) { GP} ;~  
impl[algorithm-1].sort(data); c./\sN@  
} VvhfD2*T  
1Bh"'9-!JT  
public static interface Sort { T ,lM(2S[  
public void sort(int[] data); }3Es&p$9  
} Z\!,f.>g  
D!j/a!MaKk  
public static void swap(int[] data, int i, int j) { xl}rdnf}  
int temp = data; S=@+qcI  
data = data[j];  }k^uup*{  
data[j] = temp; .;? Bni  
} {U5sRM|I  
} pBsb>wvej  
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