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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。 ;j4?>3  
插入排序: nu'M 39{  
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package org.rut.util.algorithm.support; -?(E_^ng  
r#xg#uoj  
import org.rut.util.algorithm.SortUtil; )Tk1 QHU  
/** i\W/C  
* @author treeroot ]O]GeAGC2  
* @since 2006-2-2 ;vt8R=T  
* @version 1.0 C+|b1/N-  
*/ T0&f8  
public class InsertSort implements SortUtil.Sort{ @xB*KyUW  
}#X8@  
/* (non-Javadoc) It{;SKeo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [,TkFbDq"J  
*/ JwJ7=P=c  
public void sort(int[] data) { PssMTEf  
int temp; 7EXI6jGJ|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lkBdl#]9  
} V{<xf f  
} U#3J0+!  
} hUYd0qEbEt  
-%L6#4m4o  
} =2@B&  
Yot?=T};3{  
冒泡排序: D$T%\ P  
6P';DB  
package org.rut.util.algorithm.support; U^Xm)lL  
)HX|S-qRU=  
import org.rut.util.algorithm.SortUtil; YfRkwKjy(  
/{|fyKo\?  
/** F$[ U|%*  
* @author treeroot o`Ta("9^  
* @since 2006-2-2 rD*sl}  
* @version 1.0 y K"kEA[;  
*/ %Qj;,#z  
public class BubbleSort implements SortUtil.Sort{ %Q.&ZhB  
=9j8cC5y  
/* (non-Javadoc) F+@5C:<?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t*?0D\b 2  
*/ %JLk$sP9y`  
public void sort(int[] data) { yrR1[aT  
int temp; HeG)/W?r  
for(int i=0;i for(int j=data.length-1;j>i;j--){ KCWc`Oz  
if(data[j] SortUtil.swap(data,j,j-1); {#{DH?=^)u  
} *V+j%^91}  
} mW:!M!kk  
} !H ~<  
} W8]lBh5~:  
S%Us5`sd  
} Z ,EvQ8i  
/ 4lvP  
选择排序: g H G  
NOp609\^  
package org.rut.util.algorithm.support; ,u/aT5\_  
xKFn.qFr  
import org.rut.util.algorithm.SortUtil; 7PkJ-JBA  
Y*! qG  
/** 2z|*xS'G  
* @author treeroot &o<F7U'R  
* @since 2006-2-2 /r=tI)'$  
* @version 1.0 ~ {Mn{  
*/ 3YZs+d.;ib  
public class SelectionSort implements SortUtil.Sort { pZeE61c/  
k68F-e[i^  
/* .B\5OI,]  
* (non-Javadoc) FHC \?Cg  
* $H-!j%hV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (<)]sp2   
*/ AhNq/?Q Q~  
public void sort(int[] data) { xe*aC  
int temp; AW,53\ 0  
for (int i = 0; i < data.length; i++) { 5:kH;/U  
int lowIndex = i; ndeebXw*  
for (int j = data.length - 1; j > i; j--) { 46 PoM  
if (data[j] < data[lowIndex]) { 0A( +ZMd  
lowIndex = j; =" g*\s?r  
} K#U<ib-v  
} T8HF|%I  
SortUtil.swap(data,i,lowIndex); Kh MSL  
} _N@ro  
} yUp,NfS]o  
nH<eR)0  
} 'z[Sp~I\  
SGe^ogO"v  
Shell排序: 3Oi nK['  
VhNz8)  
package org.rut.util.algorithm.support; ]GRWnif  
3.qTLga|}  
import org.rut.util.algorithm.SortUtil; lg b?)=  
3%E74 mOcD  
/** (x3.poSt  
* @author treeroot pbU!dOU~e  
* @since 2006-2-2 Q*b]_0Rb  
* @version 1.0 ,JEF GI{  
*/ D)d~3`=#  
public class ShellSort implements SortUtil.Sort{ >>5NX"{  
;W^o@*i{>  
/* (non-Javadoc) #cCL.p"]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u5Ftu?t  
*/ V?=8".GiX  
public void sort(int[] data) { 9F*+YG!  
for(int i=data.length/2;i>2;i/=2){ ETXZ?\<a5  
for(int j=0;j insertSort(data,j,i); `3hSL R  
} |0%+wB  
} X3V'Cy/sy  
insertSort(data,0,1); fF V!)Zj  
} iySRY^  
>mjNmh7  
/** YxP@!U9dE,  
* @param data <NuUW9+  
* @param j `YI f_a{  
* @param i Iwc{R8BV  
*/ GPGm]Gt  
private void insertSort(int[] data, int start, int inc) { n;:rf7hGY  
int temp; )kkhJI*v  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R@`y>XGNJ  
} .Fa4shNV  
} ZAXN6h  
} Y2?.}ZO  
9s_,crq5  
} b%S62(qP  
=-}[ ^u1  
快速排序: 1Q. \s_2  
XGkkB  
package org.rut.util.algorithm.support; cwL1/DGDB  
!ki.t  
import org.rut.util.algorithm.SortUtil; %C=]1Q=T)  
|e2be1LD  
/** }eRD|1  
* @author treeroot WuZ/C_  
* @since 2006-2-2 w18y}mS"H  
* @version 1.0 .k0~Vh2u  
*/ A21N|$[  
public class QuickSort implements SortUtil.Sort{ YR;^hs?  
<E0UK^-}  
/* (non-Javadoc) |USX[j m\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 %,a =,v  
*/ b/Xbs0q  
public void sort(int[] data) { MC { 2X  
quickSort(data,0,data.length-1); 44F`$.v96  
} Rh>}rGvCUN  
private void quickSort(int[] data,int i,int j){ Ey4z.s'-l  
int pivotIndex=(i+j)/2; V@\%)J'g  
file://swap @`,1:  
SortUtil.swap(data,pivotIndex,j); -%I2[)F<  
B0ndcB-  
int k=partition(data,i-1,j,data[j]); QQV~?iW{~  
SortUtil.swap(data,k,j); al[n, u  
if((k-i)>1) quickSort(data,i,k-1); X 51Yfr  
if((j-k)>1) quickSort(data,k+1,j); iT)z_  
T0]*{k(FR  
} ]7/ b/J  
/** eVM/uDD  
* @param data dF~8XYo  
* @param i >~Qr  
* @param j /mK?E5H'r1  
* @return &zuG81F6  
*/ 56Vb+0J'  
private int partition(int[] data, int l, int r,int pivot) { G2^et$<{uU  
do{ 4NdN< #Lr  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); jr3ti>,xV  
SortUtil.swap(data,l,r); w/IZDMBf|  
} Vo"RO$%ow*  
while(l SortUtil.swap(data,l,r); ^'ryNa;"  
return l; zrU{@z$l  
} +tD[9b! m  
wW%4d  
}  *tAg*$  
gc?#pP  
改进后的快速排序: 3dDX8M?  
"hdvHUz  
package org.rut.util.algorithm.support; ~wVd$%7`  
9,^_<O@Q  
import org.rut.util.algorithm.SortUtil; Y!T %cTK)a  
}YHX-e<Yx]  
/** lbuAE%  
* @author treeroot Y X_ gb/A  
* @since 2006-2-2 v$ub~Q6W  
* @version 1.0 $/7pYl\n  
*/ m-jHze`D3  
public class ImprovedQuickSort implements SortUtil.Sort { E~AjK'Z  
D91e\|]  
private static int MAX_STACK_SIZE=4096; 3q?\r` a  
private static int THRESHOLD=10; T]?n)L,2  
/* (non-Javadoc) "hy.GWF|*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0pSmj2/,.  
*/ @GvztVYo  
public void sort(int[] data) { Z*FrB58  
int[] stack=new int[MAX_STACK_SIZE]; K_ ci_g":  
T =2=k&|  
int top=-1; Vy|6E#U  
int pivot; oaK%Ww6~  
int pivotIndex,l,r; t>uN'oCyC  
=Z+nX0qF  
stack[++top]=0; 7YAIA%8  
stack[++top]=data.length-1; y7|P-3[ 4w  
0{j&6I2  
while(top>0){ "t0kAG  
int j=stack[top--]; yA3wtm/?  
int i=stack[top--]; 8Y#\xzod  
DU=dLE6-P;  
pivotIndex=(i+j)/2; Tc+gdo>G  
pivot=data[pivotIndex]; 2"-S<zM  
~%2pp~1 K  
SortUtil.swap(data,pivotIndex,j); Jx=hJ-FY  
r lKlpl  
file://partition H&yD*@  
l=i-1; XB[<;*Iz  
r=j; 0j_bh,zG#  
do{ 8O"U 0  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .E@|D6$D  
SortUtil.swap(data,l,r); RO3oP1@B  
} -!8(bjlJ&  
while(l SortUtil.swap(data,l,r); _A~4NW{U7  
SortUtil.swap(data,l,j); :(_+7N[KA  
${8?N:>t  
if((l-i)>THRESHOLD){ 4Ua> Yw0  
stack[++top]=i; 1lpwZ"  
stack[++top]=l-1; -&e92g&n   
} [JaS??ig  
if((j-l)>THRESHOLD){ wlPx,UqZ  
stack[++top]=l+1; @p|$/Z%R,  
stack[++top]=j; F]I=+T   
} $.:mai  
W k}AmC  
} X.TI>90{  
file://new InsertSort().sort(data); Z,X'-7YkU  
insertSort(data); -`Y :~q1  
} \-*eL;qP  
/** wI5Yn h  
* @param data YQ0)5}  
*/ |~ _'V "  
private void insertSort(int[] data) { K)_WL]RJ.4  
int temp; 9V.u-^o&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \`w4|T  
} u(!&:A9JFd  
} oW;6h.  
} ]LZ`LL'#Y_  
k;5Pom  
} o-cAG{.WC  
g_Im;1$  
归并排序: =@)d5^<5F  
wIf {6z{  
package org.rut.util.algorithm.support; ,]5Ic.};p  
_xLHrT!y  
import org.rut.util.algorithm.SortUtil; &Sp -w?kM  
nP UqMn'  
/** k'X;ruQ:tF  
* @author treeroot  >Ng)k]G  
* @since 2006-2-2 dz[ bm< T7  
* @version 1.0 1w"8~Z:UXV  
*/ g`>og^7g  
public class MergeSort implements SortUtil.Sort{ R3X{:1{j  
{w <+_++  
/* (non-Javadoc) pZZf[p^s|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RL[E X5U  
*/ .O0O-VD+a  
public void sort(int[] data) { 9GdB#k6W`  
int[] temp=new int[data.length]; 3u33a"nL8  
mergeSort(data,temp,0,data.length-1); 7}_!  
} Y $-3v.  
9,]5v +  
private void mergeSort(int[] data,int[] temp,int l,int r){ ?tg  y|  
int mid=(l+r)/2; `O6:t\d@  
if(l==r) return ; k6Cn"2q <  
mergeSort(data,temp,l,mid); H7[6yh  
mergeSort(data,temp,mid+1,r); tM j1~ R  
for(int i=l;i<=r;i++){ Ay{t254/  
temp=data; 7P7b8 ]  
} g-vg6@6  
int i1=l; !rhk $ L  
int i2=mid+1; eb|i 3.  
for(int cur=l;cur<=r;cur++){ $c&0F,   
if(i1==mid+1) a8AYcE b  
data[cur]=temp[i2++]; yA[({2%  
else if(i2>r) x&A vUJ  
data[cur]=temp[i1++]; (.3'=n|kE  
else if(temp[i1] data[cur]=temp[i1++]; CCDDK L]N:  
else 4ujvD^  
data[cur]=temp[i2++]; t_ur&.^SB  
} MP>n)!R[`  
} e &9F\e  
@uH#qg7  
} _DP|-bp D  
~svO*o Wa  
改进后的归并排序: Vc3mp;6"  
gX5&d\y  
package org.rut.util.algorithm.support; z{]?h cY  
n +1y  
import org.rut.util.algorithm.SortUtil; Qju`e Eo  
V^il$'  
/** -p-0;Hy  
* @author treeroot ->lu#; A5  
* @since 2006-2-2 W0cgI9=9  
* @version 1.0 6yAA~;*5'  
*/ P6U%=xaC  
public class ImprovedMergeSort implements SortUtil.Sort { AAUyy :  
efz&@|KR  
private static final int THRESHOLD = 10; G&f7+e  
lnbmoHv  
/* 'YSuQP>  
* (non-Javadoc) ;,O fJ'q^  
* ;\%sEcpT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RD<75]**{  
*/ @oe\"vz  
public void sort(int[] data) { <1~^C  
int[] temp=new int[data.length]; %"A_!<n@*`  
mergeSort(data,temp,0,data.length-1); [{&jr]w`|  
} q\9d6u=Gm  
4-v6=gz.  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5 ZfP  
int i, j, k; Me:{{-V4  
int mid = (l + r) / 2; ?PPZp6A3L=  
if (l == r) v@EQ^C2.&  
return; yy(A(}  
if ((mid - l) >= THRESHOLD) bb=uF1  
mergeSort(data, temp, l, mid); F#+.>!  
else Ey&aB YR  
insertSort(data, l, mid - l + 1); '7I g.K&  
if ((r - mid) > THRESHOLD) }{],GHCjQ  
mergeSort(data, temp, mid + 1, r); G\iyJSj[P  
else G { mC7@  
insertSort(data, mid + 1, r - mid); +iF 1sC_  
#^mqQRpgq  
for (i = l; i <= mid; i++) { ^~ L}<]  
temp = data; ?Hy+'sq[  
} Q*O<@   
for (j = 1; j <= r - mid; j++) { v@u<Ww;=@  
temp[r - j + 1] = data[j + mid]; O%1/ r*  
} q'(z #h,cv  
int a = temp[l]; 8TZENRzx-|  
int b = temp[r]; Lu>H`B7Q"  
for (i = l, j = r, k = l; k <= r; k++) { nwM)K  
if (a < b) { h ; kfh.  
data[k] = temp[i++]; )%JD8;[Jq  
a = temp; <`g3(?   
} else { GHN3PEJ>  
data[k] = temp[j--]; G{c#\?12C  
b = temp[j]; E,*&BDW  
} aU<s<2 O)  
} S_8r\B[>P  
} &/ ouW'oP  
!E& MBAKy  
/** =l`OHTg  
* @param data W8aU "_  
* @param l xRX>|S  
* @param i x,Y 5U+]E  
*/ |pWaBh|r  
private void insertSort(int[] data, int start, int len) { # .q#O C  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); u.6P-yh  
} u3ds QU  
} .2X2b<%)  
} Gq]d:-7l  
} ]h~o],:  
D[>W{g $  
堆排序: ^9ng)  
2@MN]Low  
package org.rut.util.algorithm.support; d\Jji 6W  
lfS;?~W0k  
import org.rut.util.algorithm.SortUtil; !dv-8C$U  
+{rJ[J/g  
/** am:.NG+  
* @author treeroot 5}a"?5J^  
* @since 2006-2-2 \f"?Tv-C'  
* @version 1.0 N8+P  
*/ ,k*F`.[  
public class HeapSort implements SortUtil.Sort{ 4MX7=!E  
x N`T  
/* (non-Javadoc) $A?}a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AMk~dzNt  
*/ pT=2e&  
public void sort(int[] data) { xv0M  
MaxHeap h=new MaxHeap(); 4r*Pa(;y  
h.init(data); 6ojo##j  
for(int i=0;i h.remove(); oCJbkt=  
System.arraycopy(h.queue,1,data,0,data.length); QHQj/)J8  
} %3,xaVN  
?~)Ak`=  
private static class MaxHeap{ 0>Fqx{!heq  
Vj!WaN_  
void init(int[] data){ rl|Q)A{  
this.queue=new int[data.length+1]; ~t9Mh^gij  
for(int i=0;i queue[++size]=data;  ? ICDIn  
fixUp(size); H7jTQW0rp5  
} 3'@&c?F ye  
} OROqT~6G  
!`C%Fkq  
private int size=0; dzxI QlP  
Mdky^;qq3;  
private int[] queue; n2E4!L|q  
DR{] sG  
public int get() { !Mil?^  
return queue[1]; 0Bu*g LY  
} k5s?lWH  
1(pjVz&  
public void remove() { 3k{c$x}  
SortUtil.swap(queue,1,size--); L?.7\a@  
fixDown(1); Jy`G]]?  
} !VNbj\Bp  
file://fixdown ;/aB)JZ5=  
private void fixDown(int k) { /h-6CR Ka  
int j; r./z,4A`  
while ((j = k << 1) <= size) {  wQw-:f-  
if (j < size %26amp;%26amp; queue[j] j++; :}y| 4*z  
if (queue[k]>queue[j]) file://不用交换 y&3TQ]f\  
break; -3`Isv  
SortUtil.swap(queue,j,k); r?afv.@L2  
k = j; @>CG3`?}  
} c&A]pLn+x  
} Pzptr%{  
private void fixUp(int k) { tgfM:kzw  
while (k > 1) { @LHtt/&  
int j = k >> 1; `~|DoSi^d  
if (queue[j]>queue[k]) X,&xhSzg?  
break; Y8t Nwh  
SortUtil.swap(queue,j,k); <]c#)xg  
k = j; w. vY(s  
} v2(U(Tt  
} S8vx[<  
*<?XTs<  
} |9x%gUm  
tgK x4  
} 2!{N[*)  
<gR`)YF7  
SortUtil: Gk{W:866  
G u6[{u  
package org.rut.util.algorithm; 4 ;^g MI9  
5UPPk$8 `  
import org.rut.util.algorithm.support.BubbleSort; z?I+u* rF6  
import org.rut.util.algorithm.support.HeapSort; df!+T0  
import org.rut.util.algorithm.support.ImprovedMergeSort; [Yn;G7cK  
import org.rut.util.algorithm.support.ImprovedQuickSort; ::0aY ;D2  
import org.rut.util.algorithm.support.InsertSort; 5a8JVDLX^  
import org.rut.util.algorithm.support.MergeSort; ;Sy/N||  
import org.rut.util.algorithm.support.QuickSort; Th_Q owk  
import org.rut.util.algorithm.support.SelectionSort; m\/>C|f\  
import org.rut.util.algorithm.support.ShellSort; P4i3y{$V  
_F3KFQ4,S-  
/** CGCQa0  
* @author treeroot lGl[^ 0  
* @since 2006-2-2 OuMco+C  
* @version 1.0 uAc@ Z-  
*/ 5XI;<^n2  
public class SortUtil { fm[_@L% x  
public final static int INSERT = 1;  bkxk i@t  
public final static int BUBBLE = 2; oo;;y,`8py  
public final static int SELECTION = 3; c6f|y_ 2  
public final static int SHELL = 4; sg+ZQDF{x  
public final static int QUICK = 5; ULV)0SB  
public final static int IMPROVED_QUICK = 6; \I'f3  
public final static int MERGE = 7; #4Dn@Gqh.Y  
public final static int IMPROVED_MERGE = 8; xi;/^)r  
public final static int HEAP = 9; ROPC |  
|= tJ|  
public static void sort(int[] data) { 20$F$YYuk  
sort(data, IMPROVED_QUICK); R5m`;hF  
} VfQMFb',o  
private static String[] name={ AD~~e% s=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" tx2Vyu  
}; <WZ1-  
V"w`!  
private static Sort[] impl=new Sort[]{ {E;2&d  
new InsertSort(), 1M7\:te*  
new BubbleSort(), ?BWHr(J  
new SelectionSort(), }f<fgY  
new ShellSort(), HiQoRk  
new QuickSort(), Y1$#KC  
new ImprovedQuickSort(), )?!vJb"  
new MergeSort(), I;`Ko_i  
new ImprovedMergeSort(), +A]&AkTw  
new HeapSort() Z}sG3p  
}; d9`3EP)n  
1mT|o_K{ T  
public static String toString(int algorithm){ cmwzKu%  
return name[algorithm-1]; kHt!S9r  
} &:;/]cwj  
H arFo  
public static void sort(int[] data, int algorithm) { 3X88x-3  
impl[algorithm-1].sort(data); mXxZM;P[  
} dNR7e   
-&qRo0^3  
public static interface Sort { 3%It~o?  
public void sort(int[] data); E9L!O.Q  
} WE+sFaKq-  
2(+RIu0d  
public static void swap(int[] data, int i, int j) { <Cf7E  
int temp = data; -_y~rx >  
data = data[j]; ^2&O3s  
data[j] = temp; O!#L#u53  
} \SYPu,ZT  
} &Iv\jhq  
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