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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。 7C"&f *lEi  
插入排序: "hi)p9 _cR  
&q0s8'qA  
package org.rut.util.algorithm.support; a-<&(jV  
/6PL  
import org.rut.util.algorithm.SortUtil; :]g>8sWL  
/** Bp>Z?"hTe  
* @author treeroot (viGL|Ogn  
* @since 2006-2-2 MmPLJ  
* @version 1.0 s 8 c#_  
*/ WY 'QhieH  
public class InsertSort implements SortUtil.Sort{ F.[E;gOTo  
q"O4}4`  
/* (non-Javadoc) %;-] HI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u~y0H  
*/ fce~a\y0  
public void sort(int[] data) { r[ }5<S Q  
int temp; ,8^QV3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y m~  
} f7_EqS=(  
} E+$%88  
} PA_54a9/<  
_cw~N p  
} /3mt=1/~{B  
aH!2zC\:T  
冒泡排序: VA^yv1We  
0V_dg |.  
package org.rut.util.algorithm.support; 6mAaFDI,R  
mOQN$d[  
import org.rut.util.algorithm.SortUtil; e[)oT  
yRF %SWO  
/** dNg5#?mzT5  
* @author treeroot ap y#8]  
* @since 2006-2-2 C0> Z<z  
* @version 1.0 'l7ey3B%  
*/ 4gkaCk{]  
public class BubbleSort implements SortUtil.Sort{ Y)oF;ko:  
^vA"3Ixb!  
/* (non-Javadoc) .lt|$["  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -mur` tC  
*/ B !}/4"  
public void sort(int[] data) { \p%,g& ^ x  
int temp; :,'yHVG\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ H;.${u^lhd  
if(data[j] SortUtil.swap(data,j,j-1); aIXN wnq  
} HJ]9e  
} ZP}NFh%,u  
} "f5neW  
} f0 d*%  
n B .?=eUa  
} <bbC &O\  
TyG;BF|rwk  
选择排序: UcI;(Va  
}Jr!a M'  
package org.rut.util.algorithm.support; v:7_ZD6kR  
k=D}i\F8  
import org.rut.util.algorithm.SortUtil; ~As/cd>9  
,N`cH\  
/** Y;dQLZ CC  
* @author treeroot eF%>5  
* @since 2006-2-2 '1r<g\ l  
* @version 1.0 +IkL=/';#  
*/ A<$w }Fy;  
public class SelectionSort implements SortUtil.Sort { de<T5/  
]b6gZ<  
/* 3 J!J#  
* (non-Javadoc) KdTDBC  
* t<DZW#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nA)KRCi  
*/ [d^ [Y:I'\  
public void sort(int[] data) { a58]#L~  
int temp; 5H!6 #pqM  
for (int i = 0; i < data.length; i++) { r-aCa/4y!  
int lowIndex = i; $(=0J*ND"  
for (int j = data.length - 1; j > i; j--) { xb22 :  
if (data[j] < data[lowIndex]) { 8EBy5X}US  
lowIndex = j; OoqA`%  
} zHu w[  
} \zMx~-2oN  
SortUtil.swap(data,i,lowIndex); 5dXDL~/2p  
} j : $Ruy  
} |K,[[D<R  
.s8u?1b  
} u#^~([ I  
aSVR +of  
Shell排序: A]_5O8<buW  
G%#M17   
package org.rut.util.algorithm.support; /ho7O/aAa  
;T,`m^@zf  
import org.rut.util.algorithm.SortUtil; Sz'H{?"  
:5, k64'D  
/** 1[k.apn  
* @author treeroot *MM8\p_PuT  
* @since 2006-2-2 o_@6R"|  
* @version 1.0 W#sCvI@   
*/ ["7]EW\!:  
public class ShellSort implements SortUtil.Sort{ >)6d~  
id:6O+\  
/* (non-Javadoc) iR39lOr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d"U'\ID2y  
*/ ! a!^'2  
public void sort(int[] data) { 3:ELYn  
for(int i=data.length/2;i>2;i/=2){ V|`w/P9g4  
for(int j=0;j insertSort(data,j,i); g3Z"ri~!G  
} eX3|<Bf  
} 3@8Zy:[8<  
insertSort(data,0,1); (\o &Gl  
} t*dd/a  
d: {#Dk#  
/** [+.P'6/[$R  
* @param data z5q(  
* @param j c)B <d#  
* @param i 9JBVG~m+  
*/ 25wvB@0&  
private void insertSort(int[] data, int start, int inc) { >uy(N  
int temp; ;/s##7qf  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); eH' J  
} $dkkgsw 7  
} ^w6~?'}  
} GEbm$\  
m&{%6  
} v~`'!N8  
Qt(4N!j  
快速排序: }]!?t~5*  
& T&>4I!'M  
package org.rut.util.algorithm.support; g), t  
PGNH<E)  
import org.rut.util.algorithm.SortUtil; |:)ARH6l#  
.0b4"0~T6  
/** ? e<D +  
* @author treeroot rcU*6`IWA  
* @since 2006-2-2 MG(qQ#;j/  
* @version 1.0 cj@ar^=`K  
*/ Zy&?.d[z  
public class QuickSort implements SortUtil.Sort{ 8h'*[-]70u  
M%"{OHj!o  
/* (non-Javadoc) ^\3r}kJ0Lp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7AuzGA0y  
*/ )7;E,m<:tO  
public void sort(int[] data) { gq~6 jf>  
quickSort(data,0,data.length-1); 7I;A5f  
} w6<zPrA  
private void quickSort(int[] data,int i,int j){ F$nc9x[S  
int pivotIndex=(i+j)/2; &)Z]nNVb  
file://swap ?v@pB>NZ  
SortUtil.swap(data,pivotIndex,j); "*JyNwf  
i=AQ1X\s  
int k=partition(data,i-1,j,data[j]); rPXy(d1<`S  
SortUtil.swap(data,k,j); ;JV(!8[  
if((k-i)>1) quickSort(data,i,k-1); 3\E G  
if((j-k)>1) quickSort(data,k+1,j); -v &  
r";;Fk#5  
} y|2y! &o,!  
/** @l %x;`E  
* @param data ~Sc{\ZJl  
* @param i ]aI   
* @param j ?CSv;:  
* @return zn2Qp  
*/ wq = Ef  
private int partition(int[] data, int l, int r,int pivot) { V8}jFib  
do{ "?r_A*U  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \?~cJMN  
SortUtil.swap(data,l,r); Xcw 6mpLt  
} NGL,j\(~7  
while(l SortUtil.swap(data,l,r); Q~zs]{\  
return l; `FHKQS5  
} ?my2dd,|  
aM!%EaT  
} )m<CmYr2  
BVe c  
改进后的快速排序: Pt\GVWi_t  
u=f}t=3  
package org.rut.util.algorithm.support; D V=xqC6}  
|$G|M=*LN  
import org.rut.util.algorithm.SortUtil; }[b3$WZ  
D0VbD" y  
/** A40Q~X  
* @author treeroot [Nv)37|W  
* @since 2006-2-2 H*E4+3y  
* @version 1.0 ..;ep2jSs  
*/ b<8,'QgB  
public class ImprovedQuickSort implements SortUtil.Sort { 1;"DIsz@d  
zY2o;-d|4  
private static int MAX_STACK_SIZE=4096; x't@Mc  
private static int THRESHOLD=10; ?AYb@&%  
/* (non-Javadoc) Sgq" 3(+%,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |DkK7gw  
*/ :7[4wQDt4  
public void sort(int[] data) { f <pJ_  
int[] stack=new int[MAX_STACK_SIZE]; r O-=):2  
u`Abko<D  
int top=-1; ':#DROe!  
int pivot; G^2%F5@  
int pivotIndex,l,r; ^ RIWW0  
h)pYV>!d  
stack[++top]=0; qt`HP3J&  
stack[++top]=data.length-1; 3F?_{A  
!~ fy".|x  
while(top>0){ M+GtUE~"  
int j=stack[top--]; F42?h:y8I  
int i=stack[top--]; ^2 \-zX!bt  
,?(U4pzX  
pivotIndex=(i+j)/2; O*udVE>  
pivot=data[pivotIndex]; 6~tj"34_  
xFp?+a  
SortUtil.swap(data,pivotIndex,j); sM6o(=>  
,u^%[ejH  
file://partition P]<15l  
l=i-1; >?|c>HGX  
r=j; {VT**o  
do{ ; fxrOfb  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i<-a-Z+^  
SortUtil.swap(data,l,r); 4;V;8a\A  
} NN] 8T  
while(l SortUtil.swap(data,l,r); O6$n VpD3  
SortUtil.swap(data,l,j); G0b##-.'^  
,iMdv+  
if((l-i)>THRESHOLD){ DyM<aT  
stack[++top]=i; h {VdW}g  
stack[++top]=l-1; K8 Hj)$E61  
} q$7/X;A  
if((j-l)>THRESHOLD){ pIl[)%F  
stack[++top]=l+1; Wp(Rw4j  
stack[++top]=j; gPcOm b  
} Ws;X;7tS  
vpz l{  
} +@qIDUiF3  
file://new InsertSort().sort(data); D8\9nHUD`  
insertSort(data); 0;tu}]jnN  
} >Y=qSg>Ik  
/** o(eh.  
* @param data _|wnmeL*  
*/ tOxTiaa=  
private void insertSort(int[] data) { 04#<qd&ob@  
int temp; Tl L\&n.$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7=a=@D[  
} 4a zqH;i  
} y1#*c$ O  
} sGO+O$J  
i0'g$  
} F!zGk(Pu  
=k##*%  
归并排序: Z.,pcnaQb  
!dOpLUh l  
package org.rut.util.algorithm.support; x{9$4d  
,jdTe?[*^  
import org.rut.util.algorithm.SortUtil; %hi]oz  
9yWSlbPr]  
/** a^7QHYJ6  
* @author treeroot TF~cDn  
* @since 2006-2-2 qflOi8  
* @version 1.0 SS!b`  
*/ DqA$%b yyE  
public class MergeSort implements SortUtil.Sort{ FB2{qG3  
 z uI7Px  
/* (non-Javadoc) cv-;fd>'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L b-xc]  
*/ iHeu<3O  
public void sort(int[] data) { *0x!C8*`Xe  
int[] temp=new int[data.length]; ta0;:o?/d  
mergeSort(data,temp,0,data.length-1); S2:G#%EAa  
} 4"#F =f0  
:eFyd`Syw  
private void mergeSort(int[] data,int[] temp,int l,int r){ Uj^Y\w-@Z  
int mid=(l+r)/2; V\=%u<f  
if(l==r) return ; 9F7}1cH7g@  
mergeSort(data,temp,l,mid); {Zo*FZcaX  
mergeSort(data,temp,mid+1,r); [~ !9t9+~  
for(int i=l;i<=r;i++){ ?d_vD@+\  
temp=data; zQoJ8i>  
} sN ZOm$  
int i1=l; H/l,;/q]b  
int i2=mid+1;  `l  
for(int cur=l;cur<=r;cur++){ 'j;i4ie>*x  
if(i1==mid+1) f('##pND@  
data[cur]=temp[i2++]; `$ pJ2S  
else if(i2>r) zz #IY'dwT  
data[cur]=temp[i1++]; _ygdv\^Tet  
else if(temp[i1] data[cur]=temp[i1++]; ]L?WC  
else Iv/h1j> H  
data[cur]=temp[i2++]; ]F #0to  
} !}q@O-}j  
} 5hfx2 O)  
uTrQ<|}#  
} |WSm puf  
@B9#Hrc  
改进后的归并排序: dTqL[?wH?  
x$KQ*P~q  
package org.rut.util.algorithm.support; }[OEtd{  
2[Xe:)d  
import org.rut.util.algorithm.SortUtil; 0>:`|IGnT2  
`+(4t4@ew  
/** i}@5<&J  
* @author treeroot RQ,X0 pS  
* @since 2006-2-2 a> S -50  
* @version 1.0 02C;  
*/ z5W;-sCz  
public class ImprovedMergeSort implements SortUtil.Sort { BR tT 7  
:AyZe7:(D  
private static final int THRESHOLD = 10; aZCxyoh+  
(qDJgf4fgn  
/* XQcE  ZJ2  
* (non-Javadoc) c3Zwp%  
* i~tps  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QY$4D;M`g6  
*/ sNJ?Z"5k1h  
public void sort(int[] data) { 2>im'x 5  
int[] temp=new int[data.length]; EC?U#!kv  
mergeSort(data,temp,0,data.length-1); A&_v:z4y/  
} 3Z74&a$  
+Q!Kj7EU/  
private void mergeSort(int[] data, int[] temp, int l, int r) { 7G_OFD  
int i, j, k; >k(AQW5?  
int mid = (l + r) / 2; `;&=m, W'  
if (l == r) I2C1mV  
return; |sDp>..  
if ((mid - l) >= THRESHOLD) sE0,b  
mergeSort(data, temp, l, mid);  DIh[%  
else #DcK{|ty  
insertSort(data, l, mid - l + 1); s$VLVT*6  
if ((r - mid) > THRESHOLD) ,@t#)HV  
mergeSort(data, temp, mid + 1, r); fwaM;YN_  
else [q!)Y:|u_>  
insertSort(data, mid + 1, r - mid); 1JN/oq;  
VM"*@T  
for (i = l; i <= mid; i++) { IFWP&20  
temp = data; ;\t(c  
} <(Ktf0'__  
for (j = 1; j <= r - mid; j++) { [Kd"M[1[ <  
temp[r - j + 1] = data[j + mid]; m`8tHHF  
} ]yA_N>k2K  
int a = temp[l]; [ ]=}0l<J  
int b = temp[r]; YQ5d!a.  
for (i = l, j = r, k = l; k <= r; k++) { 1iE*-K%Q  
if (a < b) { 9_pOV%Qs  
data[k] = temp[i++]; <(caY37o6)  
a = temp; q.PXO3T  
} else { l # F.S5i  
data[k] = temp[j--]; `d:cq.OO  
b = temp[j]; on0>_-n)  
} {NV=k%MTmi  
} gnU##Km|  
} z@J;sz  
?:sQ]S/Er  
/** pc<A ,?  
* @param data O.+X,CQG*  
* @param l T13Jno  
* @param i Fv9n>%W&  
*/ j0[9Cj^%c  
private void insertSort(int[] data, int start, int len) { '} LAZQ"  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8VZLwhj  
} 00@y,V_]  
} D$y-Kh  
} D[}qhDlX  
} Oe}6jcb6&  
v"G)G)*z  
堆排序: ]Q0+1'yuK  
Zw"K69A)  
package org.rut.util.algorithm.support; :0B' b  
Ndr4e?Xa,  
import org.rut.util.algorithm.SortUtil; m;KD@E!  
N b@zn0A(;  
/** 6)~J5Fb  
* @author treeroot %{M&"Mv  
* @since 2006-2-2 . 'rC'FT  
* @version 1.0 }Ii5[nRN  
*/ z gDc=  
public class HeapSort implements SortUtil.Sort{ \4|o5,+(@  
h*\/{$y  
/* (non-Javadoc) Yn }Ivg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AjA.="3  
*/ x>=8~wIK  
public void sort(int[] data) { uKocEWB=/F  
MaxHeap h=new MaxHeap(); w>ap8><4  
h.init(data); Sx3R 2-!Z  
for(int i=0;i h.remove(); ==pGRauq  
System.arraycopy(h.queue,1,data,0,data.length); {y k0Zef_  
} nJ-U*yz  
{Jj vF  
private static class MaxHeap{ 9n#Em  
Iib39?D W  
void init(int[] data){ z(&~O;;N#  
this.queue=new int[data.length+1]; k3wAbGp  
for(int i=0;i queue[++size]=data; oCftI':@  
fixUp(size); >AT T<U=  
} `upxM0gc  
} A(Ss:7({  
x:O;Z~ |.  
private int size=0; ry%Fs&V*>  
oj1,DU  
private int[] queue; ;<=B I!  
h!L6NS_Q,  
public int get() {  e ):rr*  
return queue[1]; rpu{YC1C%  
} u`2[V4=L  
9cm9;  
public void remove() { eBW=bK~[VP  
SortUtil.swap(queue,1,size--); 6X@$xe847[  
fixDown(1); =,-&h V  
} 41[1_p(  
file://fixdown `:I<Jp  
private void fixDown(int k) { igD,|YSK`z  
int j; Dqw?3 KB  
while ((j = k << 1) <= size) { 3 O)^Hq+9  
if (j < size %26amp;%26amp; queue[j] j++; FX#fh 2  
if (queue[k]>queue[j]) file://不用交换 >$yqx1=jW  
break; cj!Ew}o40D  
SortUtil.swap(queue,j,k); "/zIsn7  
k = j; <+oTYPgD9  
} NdW2OUxw"  
} eaxp(VX?oy  
private void fixUp(int k) { :sY pZX1  
while (k > 1) { uzx?U3.\  
int j = k >> 1; 2/c^3[ccR  
if (queue[j]>queue[k]) rIt#ps  
break; _8U 5mW  
SortUtil.swap(queue,j,k); Oa'DVfw2J  
k = j; l?N|Gj;ZFZ  
} !A\Qwg>  
} 2V 1|b`b#4  
DhAQ|SdCf  
} bH-QF\>  
fgW>U*.ar  
} /*+P}__k  
x dT1jI  
SortUtil: U;7Cmti"  
&pCNOHi|  
package org.rut.util.algorithm; FKOTv2  
 / >Z`?  
import org.rut.util.algorithm.support.BubbleSort; o-))R| ~z  
import org.rut.util.algorithm.support.HeapSort; \C )S3!h  
import org.rut.util.algorithm.support.ImprovedMergeSort; bk-veJR  
import org.rut.util.algorithm.support.ImprovedQuickSort; R*l#[D5A  
import org.rut.util.algorithm.support.InsertSort; W]]@pbG"H\  
import org.rut.util.algorithm.support.MergeSort; =q%Q^  
import org.rut.util.algorithm.support.QuickSort; z)RJUmY3B  
import org.rut.util.algorithm.support.SelectionSort; %q~YJ*\  
import org.rut.util.algorithm.support.ShellSort; I,*zZNv Ri  
ID-Y*  
/** V6:S<A  
* @author treeroot \lJCBb+k  
* @since 2006-2-2 pQGlg[i2/  
* @version 1.0 h&t/ L  
*/ )<?^~"h  
public class SortUtil { 'UYxVh9D  
public final static int INSERT = 1; Md4hd#z  
public final static int BUBBLE = 2; |4J ;s7us  
public final static int SELECTION = 3; oTtJ]`T  
public final static int SHELL = 4; \; 9log<Z  
public final static int QUICK = 5; zz)[4G  
public final static int IMPROVED_QUICK = 6; 59Lv/Mfy  
public final static int MERGE = 7; e5g# a}  
public final static int IMPROVED_MERGE = 8; =N62 ){{  
public final static int HEAP = 9; )Vn(J#s  
-W/Lg5eK  
public static void sort(int[] data) { ^V1.Y  
sort(data, IMPROVED_QUICK); Xjy5Yj  
} ma +iIt;  
private static String[] name={ ;;^OKrzWW  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" pk%%}tP<  
}; TpB4VNi/<  
St1Ny,$yU  
private static Sort[] impl=new Sort[]{ N;YAG#'9~_  
new InsertSort(), ^\ N@qL  
new BubbleSort(), _~l*p"PL<  
new SelectionSort(), ,2|(UTv  
new ShellSort(), I"=a:q  
new QuickSort(), 0eGz|J*7  
new ImprovedQuickSort(), LU-,B?1  
new MergeSort(), jkVX>*.|oy  
new ImprovedMergeSort(), qZV.~F+  
new HeapSort() 8h.Dc&V  
}; hT=6XO od4  
]O^C'GzZ  
public static String toString(int algorithm){ L@|xpq  
return name[algorithm-1]; lpy( un  
} u l-A'  
w1Xe9'$Qb  
public static void sort(int[] data, int algorithm) { 6h5,XcO4  
impl[algorithm-1].sort(data); z0jF.ub  
} xJ);P.  
mRECd Gst  
public static interface Sort { g'%^-S ]  
public void sort(int[] data); ;Y^.SR"  
} /c&;WlE/n  
[ T6MaP?  
public static void swap(int[] data, int i, int j) { _Nx#)(x  
int temp = data; * NB:"1x  
data = data[j]; J"$Y`;  
data[j] = temp; >Oz~j>jL  
} # ~I.F4  
} mu>L9Z~(L_  
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3+5=?,请输入中文答案:八 正确答案:八