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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。 ]r"{G*1Q 9  
插入排序: dnIBAe  
W+K=M*^D;c  
package org.rut.util.algorithm.support; &*)tqQeQf  
R?&S]?H  
import org.rut.util.algorithm.SortUtil; 6/#= dv  
/** [Q 2t,tQx  
* @author treeroot Vj?.'(  
* @since 2006-2-2 GF/p|I D  
* @version 1.0 UN>hJN;c  
*/ {&h&:  
public class InsertSort implements SortUtil.Sort{ Zp__  
acGmRP9g  
/* (non-Javadoc) wH${q@z_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0|^x[dh  
*/ m/6oQ  
public void sort(int[] data) { 1;:2=8  
int temp; -ZyFUGd%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ([9h.M6v  
} .PAkW2\#  
} i*U\~CZjT  
} VJR'B={h  
]7u8m[@  
} .ySesN: C~  
XIp9=jhSR  
冒泡排序: 1  yzxA(  
@JEr/yy  
package org.rut.util.algorithm.support; m1[QD26  
T:!sfhrZ~<  
import org.rut.util.algorithm.SortUtil; ,<vrDHR  
"]NQTUb;  
/** $Jr`4s  
* @author treeroot nO|S+S_9  
* @since 2006-2-2 zA"D0fr  
* @version 1.0 Q^p@ 1I  
*/ +tV(8h4  
public class BubbleSort implements SortUtil.Sort{ UxS;m4  
TM^1 {0;r5  
/* (non-Javadoc) =AKW(v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^g[])2",  
*/ ,^<+5TYM7  
public void sort(int[] data) { HRb_ZJz  
int temp; Txfb-f!mv\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (bo bKr  
if(data[j] SortUtil.swap(data,j,j-1); 1I@4xC #X  
} M5x!84  
} _N-7H\hF  
}  q?^0 o\  
} q!H 3JL  
#/tdZ0  
} fF d9D=EW.  
j qdI=!H  
选择排序: G1nW{vce  
i L m1l  
package org.rut.util.algorithm.support; ]Z84w!z  
}DM2#E`_  
import org.rut.util.algorithm.SortUtil; =:g^_Hy  
hx2C<;s4  
/** .gPsJ?b  
* @author treeroot gOWyV@  
* @since 2006-2-2 mhVoz0%1X  
* @version 1.0 @"/}Al  
*/ KqSa"76R  
public class SelectionSort implements SortUtil.Sort { P5d@-l%}  
:O!G{./(_  
/* a[$.B2U  
* (non-Javadoc) SQ Fey~  
* n47=eKd70  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v]BQIE?R /  
*/ JyqFFZ&  
public void sort(int[] data) { jo|q,t  
int temp; aW6+Up+G*  
for (int i = 0; i < data.length; i++) { b #^aM  
int lowIndex = i; 1`}fbX;"m)  
for (int j = data.length - 1; j > i; j--) { EU@mrm?  
if (data[j] < data[lowIndex]) { <zf+Ii1:,  
lowIndex = j; y="SzPl  
} bMUIe\/v[  
} rgYuF,BT.  
SortUtil.swap(data,i,lowIndex); $HXB !$d  
} 0%qUTGj  
} (En\odbvt  
~r!5d@f.6  
} -+9x 0-P  
wrO>#`Z  
Shell排序: vW{cB y  
tT8jC:oVa  
package org.rut.util.algorithm.support; .#:,j1L"53  
L~oFW'  
import org.rut.util.algorithm.SortUtil; y{{EC#  
n>E*g|a  
/** R_qo]WvR;  
* @author treeroot VA%"IAl  
* @since 2006-2-2 Fkz  
* @version 1.0 B@;)$1-UT  
*/ YEQW:r_h.S  
public class ShellSort implements SortUtil.Sort{ &CL|q+-  
ZM vTDH!  
/* (non-Javadoc) 6|KX8\, A@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TN %"RL  
*/ bSr 'ji  
public void sort(int[] data) { 6oP{P_Pxi  
for(int i=data.length/2;i>2;i/=2){ h3kHI?jMWG  
for(int j=0;j insertSort(data,j,i);  (v`;ym  
} #8z,'~\  
} w}Upa(dU  
insertSort(data,0,1); =_'cG:=)  
} R2$U K  
Vf?#W,5>=  
/** t>wxK ,  
* @param data Lm wh`oOl  
* @param j ;ULC|7rL  
* @param i ' 4~5ez|:  
*/ )KqR8UO  
private void insertSort(int[] data, int start, int inc) { } x.)gW  
int temp; aVP|:OAj  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >jX UO  
} Hk]BC  
} tqQ0lv^J  
} 2\w=U,;(  
8`G{1lr4o  
} &Bn; Vi  
^@Qi&g`lr?  
快速排序: ^-IsK#r.k  
PEBFN  
package org.rut.util.algorithm.support; ` (D4gPW  
'%EZoc/U  
import org.rut.util.algorithm.SortUtil; d# 3tQ*G/  
m I zBK]@^  
/** ]|N4 #4  
* @author treeroot QklNw6,  
* @since 2006-2-2 f%{Tu`  
* @version 1.0 Z) Xs;7  
*/ M_1Tx  
public class QuickSort implements SortUtil.Sort{ e_=pspnZ  
Z02s(y=k1  
/* (non-Javadoc) 16QbB;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z`/.v&<>V  
*/ #Q3PzDfj  
public void sort(int[] data) { RW 7oL:$dt  
quickSort(data,0,data.length-1); c[ ony:6  
} =$8@JF'  
private void quickSort(int[] data,int i,int j){ [S]!+YBK  
int pivotIndex=(i+j)/2; d=Do@) m|  
file://swap cIr1"5POXK  
SortUtil.swap(data,pivotIndex,j); wz+5 8(  
d_C4B  
int k=partition(data,i-1,j,data[j]); t;!]z-Y>  
SortUtil.swap(data,k,j); h)_Gxe"x  
if((k-i)>1) quickSort(data,i,k-1); sJb)HQ,7x  
if((j-k)>1) quickSort(data,k+1,j); DAnb.0  
[tqO}D  
} jRG\C=&(x  
/** .NkAD-k`  
* @param data # \; >8  
* @param i |WAD $3  
* @param j P;[Y42\z|  
* @return Blbq3y+Sq  
*/ hoR=%pC*  
private int partition(int[] data, int l, int r,int pivot) { 3l%,D: ?  
do{ M{xVkXc>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @vQa\|j  
SortUtil.swap(data,l,r); GzFE%< 9F  
} V-_/(xt*  
while(l SortUtil.swap(data,l,r); Hl3)R*&'J  
return l; 3u*hT T  
} wm=RD98  
=x^l[>sz  
} VkpHzr[k  
b(RB G  
改进后的快速排序: 0[lsoYUq  
rQEi/  
package org.rut.util.algorithm.support; :wU_-{>>2  
*v rW A  
import org.rut.util.algorithm.SortUtil; rer|k<k;]G  
,?k%jcR  
/** 7%9)C[6NSs  
* @author treeroot 6z3T?`}Y  
* @since 2006-2-2 RxZm/:yuJ.  
* @version 1.0 Taf n:Nw}  
*/ xP/OsaxN  
public class ImprovedQuickSort implements SortUtil.Sort { sz/*w7  
L}W1*L$;<  
private static int MAX_STACK_SIZE=4096; )4ilCS&  
private static int THRESHOLD=10; k(EMp1[:nN  
/* (non-Javadoc) ALd]1a&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]jc_=I6)  
*/ j u*fyt  
public void sort(int[] data) { A)hhnb0o  
int[] stack=new int[MAX_STACK_SIZE]; 8?7kIin  
3Q"F(uE v^  
int top=-1; a*Ss -y  
int pivot; R zS|dGNQE  
int pivotIndex,l,r; bar0{!Y"  
5g``30:o  
stack[++top]=0; WRD A `  
stack[++top]=data.length-1; 2@ 9pr  
W|dpFh`  
while(top>0){ qO-C%p [5  
int j=stack[top--]; 94|yvh.B  
int i=stack[top--]; PK6*}y  
@P:R~m2  
pivotIndex=(i+j)/2; XDk'2ycv  
pivot=data[pivotIndex]; h2wN<dJCM  
JI"/N`-?;b  
SortUtil.swap(data,pivotIndex,j); r<*O  
l"J*)P  
file://partition 6F`qi:a+  
l=i-1; #JA}LA"l  
r=j; 5"JU?e59M  
do{ F7{R~mS;  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ZXsYn  
SortUtil.swap(data,l,r); QsF4Dl   
} dhHEE|vrz  
while(l SortUtil.swap(data,l,r); s`hav  
SortUtil.swap(data,l,j); J&eAL3"GF  
N = LM?(H  
if((l-i)>THRESHOLD){ 9Ct_$.Q .  
stack[++top]=i; Xb}!0k/{  
stack[++top]=l-1; qy_%~c87  
} o+<29o  
if((j-l)>THRESHOLD){ upypxC  
stack[++top]=l+1; l'U1 01M>F  
stack[++top]=j; AnNP Ti  
} akT|Y4KxD  
s^w\zzYb  
} 9ilM@SR  
file://new InsertSort().sort(data); )Zas x6`  
insertSort(data); vsKl#R B  
} (I4y[jnD  
/** v f`9*xF  
* @param data P##Z[$IJ3  
*/ #?9 Q{0e  
private void insertSort(int[] data) { <uZPqi||  
int temp; !@u&{"{`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); McjS)4j&.  
} %3M95UZ2  
} TPHYz>D]  
} |olNA*4  
0p-#f|ET  
} ~m=$VDWm  
Z>8eD|m%2  
归并排序: "B#Y-  
$uCiXDKCq  
package org.rut.util.algorithm.support; XaW4C-D&  
tBseqS3<  
import org.rut.util.algorithm.SortUtil; a/~29gW8E\  
 ="\*h(  
/** Gn59 yG!4  
* @author treeroot CtM'L   
* @since 2006-2-2 ]:&n-&@L  
* @version 1.0 ^'vIOq-1v  
*/ B7 HQR{t  
public class MergeSort implements SortUtil.Sort{ >uTPjR[  
wcZbmJ:  
/* (non-Javadoc) H"+wsM^@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) exQ#<x*  
*/ x;j{} %  
public void sort(int[] data) { ==N` !+  
int[] temp=new int[data.length]; 66Gx.tE  
mergeSort(data,temp,0,data.length-1); (S F1y/g@=  
} as r=m{C"  
R2 lXTW*  
private void mergeSort(int[] data,int[] temp,int l,int r){ |5,<jyp  
int mid=(l+r)/2; > \3ah4"o  
if(l==r) return ; &~#iIk~%  
mergeSort(data,temp,l,mid); DLi?'K3t  
mergeSort(data,temp,mid+1,r); Vclr2]eV4O  
for(int i=l;i<=r;i++){ EMlIxpCn:  
temp=data; "jR]MZ  
} HzvlF0f  
int i1=l; ,=|4:F9  
int i2=mid+1; ` W4dx&  
for(int cur=l;cur<=r;cur++){ rjUBLY1(  
if(i1==mid+1) CWi8Fv  
data[cur]=temp[i2++]; 0(gq; H5x'  
else if(i2>r) QU/fT_ORw  
data[cur]=temp[i1++]; E-fr}R}  
else if(temp[i1] data[cur]=temp[i1++]; QHzgy?  
else z(me@P!D~  
data[cur]=temp[i2++]; DyfsTx  
} Mra35  
} F;u_7OM  
O*G1 QX  
} l~J*' m2  
IU#x[P!  
改进后的归并排序: ?TpUf  
/p)F>WR  
package org.rut.util.algorithm.support; Zu21L3  
s+,&|;Q  
import org.rut.util.algorithm.SortUtil; -$JO8'TP  
b,@aqu  
/** C>X|VP |C  
* @author treeroot ]^ K;goQv  
* @since 2006-2-2 *HE^1IEl  
* @version 1.0 /0lC KU!=  
*/ S~)w\(r  
public class ImprovedMergeSort implements SortUtil.Sort { z/7$NxJH  
3;_ n{&  
private static final int THRESHOLD = 10; -(#-I $z  
LA4<#KP  
/* ;`(R7X *3  
* (non-Javadoc) MBw-*K'?zB  
* 8IGt4UF&?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _1|$P|$P.  
*/ /L v1$~  
public void sort(int[] data) { dMvp&M\\'  
int[] temp=new int[data.length]; #BY`h~&T  
mergeSort(data,temp,0,data.length-1); #@qN8J}R  
} OeElMRU"  
SfB8!V|;  
private void mergeSort(int[] data, int[] temp, int l, int r) { zO~9zlik  
int i, j, k; +e P.s_t  
int mid = (l + r) / 2; por/^=e{Y  
if (l == r) qX#MV>1  
return; s_ bR]G  
if ((mid - l) >= THRESHOLD) dqc1 q:k?$  
mergeSort(data, temp, l, mid); gR Nv-^  
else 8SC%O\,  
insertSort(data, l, mid - l + 1); "aq'R(/`c  
if ((r - mid) > THRESHOLD) p&N#_dmlH  
mergeSort(data, temp, mid + 1, r); oyx^a9  
else E m{aM  
insertSort(data, mid + 1, r - mid); XOy2lJ/  
w%a8XnW]1  
for (i = l; i <= mid; i++) { ~/-eyxLTm  
temp = data; -rSIBc:$8  
} {f DTSr?/  
for (j = 1; j <= r - mid; j++) { vF4]ux&  
temp[r - j + 1] = data[j + mid]; kV&9`c+  
} x,8<tSW)Z  
int a = temp[l]; UiQEJXwnz  
int b = temp[r]; nFM@@oA  
for (i = l, j = r, k = l; k <= r; k++) { Ne6}oQy(S`  
if (a < b) { 60}! LmL  
data[k] = temp[i++]; 9$1)k;ChP/  
a = temp; 9em*r9-  
} else { {1-V]h.<J  
data[k] = temp[j--]; iwF9[wAft  
b = temp[j]; iL]'y\?lv  
} 6'C2SihYp  
} Y[ zZw~yx  
} V[; M&=,"  
y\c"b-lQX  
/** ,Zf 9RM  
* @param data o[\HOe~;  
* @param l p9qKLJ*.C  
* @param i $m| V :/  
*/ v;EQ, NL  
private void insertSort(int[] data, int start, int len) { <a^Oj LLU  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); BR5BJX  
} LT@OWH  
} 1X1 N tS @  
} Pm{*.AW1  
} T*[ VY1  
w:i:~f .  
堆排序: )?aaBaN$  
C$yq\C+I  
package org.rut.util.algorithm.support; e Y$qV}  
Uh6 '$0  
import org.rut.util.algorithm.SortUtil; 1B=>_3_  
,*svtw:2')  
/** !Ng=Yk>3  
* @author treeroot 8wZf ]_  
* @since 2006-2-2 PWr(*ZP>hI  
* @version 1.0 =8{WZCW5  
*/ +A8j@d#:  
public class HeapSort implements SortUtil.Sort{ MGpt}|t-  
;#/@+4@a&  
/* (non-Javadoc) G$M9=@Ug  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'lz "2@4{  
*/ 0(TTw(;  
public void sort(int[] data) { RFaSwf,5n  
MaxHeap h=new MaxHeap(); Z|lU8`'5  
h.init(data); s1N?/>lmB  
for(int i=0;i h.remove(); vGy8Qu>  
System.arraycopy(h.queue,1,data,0,data.length); 9xI GV!  
} zYER  
lSwcL  
private static class MaxHeap{ ,:Z^$  
O[^%{'  
void init(int[] data){ oqd;6[%G  
this.queue=new int[data.length+1]; _qwQ;!9  
for(int i=0;i queue[++size]=data; ;,h/   
fixUp(size); %ysZ5:X  
} CY:d`4  
} ~uWOdm-"[  
13k !'P  
private int size=0; !^oV #  
g|X;ahTT  
private int[] queue; g=L]S-e  
V9yl4q-bL  
public int get() { s ^Nw%KAv  
return queue[1]; - YqYcer  
} b}^S.;vNj  
LpbsYl  
public void remove() { v X~RP *  
SortUtil.swap(queue,1,size--); $ ,Ck70_  
fixDown(1);  mEG6  
}  uF|3/x=  
file://fixdown n.MRz WJpZ  
private void fixDown(int k) { gmKGy@]  
int j; S0,R_d')  
while ((j = k << 1) <= size) { nQX+pkJ  
if (j < size %26amp;%26amp; queue[j] j++; (IqZ@->nw  
if (queue[k]>queue[j]) file://不用交换 /1=4"|q>h'  
break; Rd \.:u  
SortUtil.swap(queue,j,k); c,MOv7{x_  
k = j; 7cP@jj  
} <*ZJaBwWU~  
} 4rT*tW"U  
private void fixUp(int k) { `3H4Ajzcc  
while (k > 1) { } p FQRSOZ  
int j = k >> 1; C@ZK~Y_g  
if (queue[j]>queue[k]) 96cJ8I8  
break; $,=6[T!z+e  
SortUtil.swap(queue,j,k); 8H,4kY?Z  
k = j; z}QwP~Z  
} lf{e[!ML'  
} ~)LH='|h\}  
E907fX[R~  
} {R<Ea @LV+  
>zsid:  
} /-_=nf}w  
x5`br.b  
SortUtil: |:[tNs*,O  
+CH},@j  
package org.rut.util.algorithm; K;?,FlH  
c .3ZXqpI;  
import org.rut.util.algorithm.support.BubbleSort; ,u }XW V  
import org.rut.util.algorithm.support.HeapSort; ^H{R+}  
import org.rut.util.algorithm.support.ImprovedMergeSort; (/!r(#K0,'  
import org.rut.util.algorithm.support.ImprovedQuickSort; #4MBoN(3  
import org.rut.util.algorithm.support.InsertSort; <9E0iz+j  
import org.rut.util.algorithm.support.MergeSort; ptatzp]c#  
import org.rut.util.algorithm.support.QuickSort; 5Wyz=+?m|  
import org.rut.util.algorithm.support.SelectionSort; 6vuq1  
import org.rut.util.algorithm.support.ShellSort; [Aj Q#;#Q  
j Uv!9Y}F  
/** 4(e59ZgY  
* @author treeroot ;__9TN  
* @since 2006-2-2 ~vmd XR`'T  
* @version 1.0 7Dzuii?1  
*/ h5%<+D<  
public class SortUtil { +;$oJJ  
public final static int INSERT = 1; x";w%  
public final static int BUBBLE = 2; t*z~5_/  
public final static int SELECTION = 3; 'E/*d2CDM(  
public final static int SHELL = 4; 0iULCK  
public final static int QUICK = 5; tO7v4  
public final static int IMPROVED_QUICK = 6; LTNj| u  
public final static int MERGE = 7; 3 !Sp0P  
public final static int IMPROVED_MERGE = 8; :q8b;*:  
public final static int HEAP = 9; 3czeTj  
P 71(  
public static void sort(int[] data) { IdYzgDH  
sort(data, IMPROVED_QUICK); ] h-,o R?e  
} S6}@I ,Q  
private static String[] name={ ,fK3ZC  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "|;:>{JC  
}; V/ cP4{L  
rG#Z=*b%  
private static Sort[] impl=new Sort[]{ /? r?it  
new InsertSort(), >AoK/(yL.  
new BubbleSort(), A+y  
new SelectionSort(), ;\EiM;Q]  
new ShellSort(), WZOY)>K  
new QuickSort(), l"\~yNgk  
new ImprovedQuickSort(), ]k9)G*  
new MergeSort(), mNmLyU=d  
new ImprovedMergeSort(), {x'GJtpb  
new HeapSort() V .os  
}; O: @}lK+H  
NCxqh<  
public static String toString(int algorithm){ -':Y\:W  
return name[algorithm-1]; Hzrtlet  
} ;a-$D]Db  
~m|Mg9-  
public static void sort(int[] data, int algorithm) { KIR'$ 6pn~  
impl[algorithm-1].sort(data); M?=;JJ:  
} [V4{c@  
* ),8PoT  
public static interface Sort { OB[o2G<0  
public void sort(int[] data); 'n<iU st  
} nz9DLAt  
y5Tlpi`g  
public static void swap(int[] data, int i, int j) { GUF"<k  
int temp = data; K3\#E/Ox  
data = data[j]; gp$Ucfu'  
data[j] = temp; 8$(Dz]v|[&  
} !61Pl/uQ  
} !LkW zn3  
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