社区应用 最新帖子 精华区 社区服务 会员列表 统计排行 社区论坛任务 迷你宠物
  • 9032阅读
  • 0回复

[JAVA]用Java实现的各种排序

级别: 终身会员
发帖
3743
铜板
8
人品值
493
贡献值
9
交易币
0
好评度
3746
信誉值
0
金币
0
所在楼道
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。 P![ZO6`:W'  
插入排序: Tc||96%2^  
vnQFq  
package org.rut.util.algorithm.support; f~a 7E;y  
e.DN,rhqI  
import org.rut.util.algorithm.SortUtil; #I0FWZ>W  
/** 3?"gfw W  
* @author treeroot NcF>}f,}\  
* @since 2006-2-2 $3>Rw/,  
* @version 1.0 B F gxa#De  
*/ S}U_uZ$b  
public class InsertSort implements SortUtil.Sort{ Y 'X!T8  
IO"P /Q  
/* (non-Javadoc) ciml:"nQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c|9g=DjK  
*/ a]V8F&)g#  
public void sort(int[] data) { <@ ts[p.  
int temp; l:e C+[_;>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); KO#kIM-  
} k# Ho7rS&  
} kJf0..J[#<  
} 8\' tfHL  
=lk'[P/p`  
} $A{$$8P  
s-Yu(X2  
冒泡排序: <|Lz#iV37  
T3 ie-G@<  
package org.rut.util.algorithm.support; ,"#nJC  
hf9i%,J  
import org.rut.util.algorithm.SortUtil; .txtt?ZF2  
6IT6EkiT  
/** K\xM%O?  
* @author treeroot XBCHJj]k  
* @since 2006-2-2 T$2A2gb `  
* @version 1.0 y< dBF[  
*/ x  zF  
public class BubbleSort implements SortUtil.Sort{ tg#jjXV\0p  
1z&"V}y  
/* (non-Javadoc) 6*S/frE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *#}=>, v  
*/ GiuE\J9i  
public void sort(int[] data) { (EWGX |QA  
int temp; iz/CC V L  
for(int i=0;i for(int j=data.length-1;j>i;j--){ |&Mo Qxw@  
if(data[j] SortUtil.swap(data,j,j-1); TK' 5NM+4  
} ll$mRC  
} uuFQTx))  
} &o t^+uVH  
} <>n|_6'$90  
lN5PKsGl  
} leNX5 sX  
sB *dv06b0  
选择排序: R-Lpgi<a"  
8w[O%  
package org.rut.util.algorithm.support; +<xQF  
diM*jN#  
import org.rut.util.algorithm.SortUtil; s-WZ3g  
jJ<&!=  
/** '\8YH+%It  
* @author treeroot [Ca''JqrA  
* @since 2006-2-2 I$+=Fb'N0  
* @version 1.0 DIQ30(MS  
*/ DU"Gz!X]Jd  
public class SelectionSort implements SortUtil.Sort { k&t.(r\  
x2)WiO/As  
/* Hn)? xw]x  
* (non-Javadoc) ^J7q,tvbJ  
* ['\R4H!x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6q>iPK Jt  
*/ +0ukLc@  
public void sort(int[] data) { .{8[o[w =  
int temp; iCiKr aW  
for (int i = 0; i < data.length; i++) { Y_y!$jd(N  
int lowIndex = i; [olSgq!3  
for (int j = data.length - 1; j > i; j--) { CXoiA"P  
if (data[j] < data[lowIndex]) { _7:Bxx4B  
lowIndex = j; cyWb*Wv  
} l{8O'4;  
} g]z k`R5  
SortUtil.swap(data,i,lowIndex); B!quj!A  
} <`vXyPA6  
} RY)x"\D  
1:T"jsWw  
} ET9tn1  
yc7b%T*Y  
Shell排序: BWYv.&=(  
 jMI30  
package org.rut.util.algorithm.support; p{GO-gE@  
_UkBOJ:G$H  
import org.rut.util.algorithm.SortUtil; $0$sDN6)x  
:/][ n9J^  
/** 0~$9z+S  
* @author treeroot xh#_K@8  
* @since 2006-2-2 LHZsmUM(dg  
* @version 1.0 6 .?0 {2s  
*/ 9 $X" D  
public class ShellSort implements SortUtil.Sort{ b+whZtNk7  
Z7y%  
/* (non-Javadoc) ,Q Ge=Exn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kg<~Uf=1  
*/ R7z @y o  
public void sort(int[] data) { N6_1iIM  
for(int i=data.length/2;i>2;i/=2){ )eZuG S  
for(int j=0;j insertSort(data,j,i); -t<1A8%  
} (Lz|o!>  
} R'B_YKHBY  
insertSort(data,0,1); J7{D6@yLS  
} o+}1M  
w0$+v/  
/** Gb[J3:.  
* @param data Wy6a4oY  
* @param j '*`n"cC:  
* @param i .,S`VNU  
*/ j&S.k  
private void insertSort(int[] data, int start, int inc) { 16I[z+RG  
int temp; yG~Vvpv  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); X[<#B5  
} J#@+1 Nt  
} 8#A4B2  
} \A\?7#9\  
d<OdQvW.  
} qu $FpOJ  
kl1Q:  
快速排序: "Zn nb*pOM  
h|'|n/F  
package org.rut.util.algorithm.support; 45%D^~2~F  
M"K$.m@t  
import org.rut.util.algorithm.SortUtil; Xu#?Lw  
/03 Wst  
/** P>~Usuf4  
* @author treeroot PK&&Vu2M  
* @since 2006-2-2 yF|yZ{  
* @version 1.0 2'W# x  
*/ q%A>q ;l:  
public class QuickSort implements SortUtil.Sort{ UL~~J[1r  
HXdo:#xEO  
/* (non-Javadoc) tNZZCdB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <Mo{o2F=  
*/ 8VG~n?y  
public void sort(int[] data) { G;/> N'#  
quickSort(data,0,data.length-1); +[ir7?Y.  
} l>i:M#z&  
private void quickSort(int[] data,int i,int j){ &dw=jHt  
int pivotIndex=(i+j)/2; 9$[MM*r  
file://swap A -8]4p::  
SortUtil.swap(data,pivotIndex,j); u0?TMy.%  
Jz&dC  
int k=partition(data,i-1,j,data[j]); 0%\fm W j  
SortUtil.swap(data,k,j); }4c$_  
if((k-i)>1) quickSort(data,i,k-1); Q-G8Fo%#,E  
if((j-k)>1) quickSort(data,k+1,j); ~tW<]l7  
3_ E}XQd  
} Ya<KMBi3  
/** q]!FFi{w;  
* @param data X>yE<ni  
* @param i TOP,]N/F H  
* @param j dR,a0+!  
* @return g?j^d:  
*/ "<&o ;x<  
private int partition(int[] data, int l, int r,int pivot) { 6oq^n s-  
do{ "J}B lB  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m\ qR myO  
SortUtil.swap(data,l,r); u0[O /G  
} j[$+DCO#|m  
while(l SortUtil.swap(data,l,r); b=WkRj  
return l; ojj T  
} dKchQsgCg  
q~AvxO  
} /d }5R@Oy  
0&&P+adk  
改进后的快速排序: drwxrZt   
[%Dh0hOg  
package org.rut.util.algorithm.support; Bz:Hp{7&  
<0l:B ;3  
import org.rut.util.algorithm.SortUtil; 8) `  
b-c6.aKf|  
/** O7&OCo|b%>  
* @author treeroot vj#m#1\ f  
* @since 2006-2-2 oc-o>H  
* @version 1.0 j~;y~Cx?  
*/ FS?1O"_  
public class ImprovedQuickSort implements SortUtil.Sort { Skux&'N:  
%A&g-4(  
private static int MAX_STACK_SIZE=4096; <x$f D37  
private static int THRESHOLD=10; > -fXn  
/* (non-Javadoc) `C6,**`R$k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^b.fci{1m  
*/ <X97W\  
public void sort(int[] data) { +@@( C9  
int[] stack=new int[MAX_STACK_SIZE]; 5':j=KQE_  
q}g0-Da  
int top=-1; lKRp9isn^  
int pivot; >M m.MNU  
int pivotIndex,l,r; 3] U/^f3  
%uP/v\l  
stack[++top]=0; TUp%Cx  
stack[++top]=data.length-1; ]@}@G[e#[  
&(x>J:b  
while(top>0){ sJg3WN  
int j=stack[top--]; T Q {8 ee{  
int i=stack[top--]; ,~K4+ t_  
HE2t0sAYX  
pivotIndex=(i+j)/2; !) d  
pivot=data[pivotIndex]; *9r 32]i;  
Au )%w  
SortUtil.swap(data,pivotIndex,j); @$!"}xDR'  
9*?YES'6  
file://partition U!nNT==  
l=i-1; Mw;^`ZxT  
r=j; ; Oz p  
do{ fX&g. fH  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sQT,@+JEr  
SortUtil.swap(data,l,r); %Si3LQf  
} Q6[h;lzGV  
while(l SortUtil.swap(data,l,r); yN}<l%  
SortUtil.swap(data,l,j); Z>'hNj)ju  
MB.LHIo  
if((l-i)>THRESHOLD){ MY&?*pV)  
stack[++top]=i; V5I xZn%  
stack[++top]=l-1; \]L h a  
} kN vNV(4  
if((j-l)>THRESHOLD){ qMBEJ<o  
stack[++top]=l+1; \5) ZI'q  
stack[++top]=j; xz/G$7q7  
} 5pE@Ww  
Nn5sD3z#  
} Vf(n  
file://new InsertSort().sort(data); @d[)i,d:G  
insertSort(data); wmX *n'l  
} Pv8AWQQJ  
/** 3\P/4GK)  
* @param data ~^eC?F(  
*/ 00A2[gO9  
private void insertSort(int[] data) { C2J@]&  
int temp; maQOU1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T!5g:;~y >  
} .lppT)P  
} ^F/H?V/PX  
} ]G=^7O]`C!  
A^ry|4`3(  
} VDv>I 2%  
m] IN-'  
归并排序: <UJ5n) }"\  
&)Iue<&2  
package org.rut.util.algorithm.support; 5kj=Y]9\I  
C5#$NV99p  
import org.rut.util.algorithm.SortUtil; :Us NiR=l  
IAbH_+7O  
/** sVIw'W  
* @author treeroot a^9}ceu?   
* @since 2006-2-2 &R}2/Mt  
* @version 1.0 Z9PG7h  
*/ ]<E\J+5K  
public class MergeSort implements SortUtil.Sort{ k5GJrK+  
`"E<%$|ZQy  
/* (non-Javadoc) xTdh/}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZCkwK  
*/ HBgt!D0MZ  
public void sort(int[] data) { p \,PY  
int[] temp=new int[data.length]; QEq>zuz5;  
mergeSort(data,temp,0,data.length-1); Y3f2RdGl  
} =)XC"kU p  
fTA%HsvU:  
private void mergeSort(int[] data,int[] temp,int l,int r){ 32):&X"AIh  
int mid=(l+r)/2; N%QVkuCbM  
if(l==r) return ; q%}54E80  
mergeSort(data,temp,l,mid); 80O[pf*?  
mergeSort(data,temp,mid+1,r); Z <tJ+  
for(int i=l;i<=r;i++){ V 8J!8=2  
temp=data; ,O"zz7  
} 6rzXM`cs  
int i1=l; J$i5A9IUr  
int i2=mid+1; I=yy I  
for(int cur=l;cur<=r;cur++){ z4c{W~}`  
if(i1==mid+1) nrI-F,1  
data[cur]=temp[i2++]; vC!}%sxVw_  
else if(i2>r) 'd=B{7k@  
data[cur]=temp[i1++]; rc]`PV  
else if(temp[i1] data[cur]=temp[i1++]; .^* .-8q  
else O LxiY r  
data[cur]=temp[i2++]; Z&0*\.6S~  
} I)X33X,  
} ^0&   
Ea[K$NC)#  
} o8ADAU"  
\P0>TWE  
改进后的归并排序: M&K'5G)7  
PaYsn *{})  
package org.rut.util.algorithm.support; 5J8U] :Y)  
Qa=v }d-O  
import org.rut.util.algorithm.SortUtil; D[ (A`!)  
;3WVrYe  
/** 6N'v`p8  
* @author treeroot N!:&Xz  
* @since 2006-2-2 |\/Y<_)JD  
* @version 1.0 (y!<^ Q  
*/ F2RU7o'f.  
public class ImprovedMergeSort implements SortUtil.Sort { :Sd iG=t  
?Dk&5d^d  
private static final int THRESHOLD = 10; u >o2lvy8  
Mk@%Wuxg2  
/* E"$AOM?(*i  
* (non-Javadoc) 7LY4q/  
* \"@BZ.y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v9s /!<j  
*/ 7ClN-/4  
public void sort(int[] data) { BiUbg6T.G  
int[] temp=new int[data.length]; @'{m-?*  
mergeSort(data,temp,0,data.length-1); q}mQm'  
} U(cV#@Y  
Ks@  
private void mergeSort(int[] data, int[] temp, int l, int r) { 8n^v,s>  
int i, j, k; w{; esU  
int mid = (l + r) / 2; nv^nq]4'Dq  
if (l == r) yb:Xjg7   
return; B'Ll\<mq@  
if ((mid - l) >= THRESHOLD) &}G2;O}3  
mergeSort(data, temp, l, mid); J}cqBk>  
else |+Fko8-  
insertSort(data, l, mid - l + 1); Cj x(Z]  
if ((r - mid) > THRESHOLD) w(KB=lA2  
mergeSort(data, temp, mid + 1, r); BHh%3Q  
else jNa'l<dn]  
insertSort(data, mid + 1, r - mid); @] ` _+\y  
9,`eYAu  
for (i = l; i <= mid; i++) { 'X$2gD3c9  
temp = data; g~JN"ap  
} %4~2  
for (j = 1; j <= r - mid; j++) { -mlBr63Bj  
temp[r - j + 1] = data[j + mid]; Oi=c 6n  
} Hki  
int a = temp[l]; & A%*sD6  
int b = temp[r]; P=%' 2BQ{{  
for (i = l, j = r, k = l; k <= r; k++) { b+.P4+  
if (a < b) { tz&oe  
data[k] = temp[i++]; S0 AaJty  
a = temp; uIkB&  
} else { w{1DwCLKq  
data[k] = temp[j--]; MwN.Ll  
b = temp[j]; B~oc.s g  
} 1 \_S1ZS  
} 5P'<X p  
} ~a^"VQ5]ac  
9fyJw1  
/** "Y Z B@  
* @param data WZ a?Xb  
* @param l &cEQ6('H  
* @param i wua`e <"  
*/ dd +%d  
private void insertSort(int[] data, int start, int len) {  1 U|IN=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); k%5 o5Hx  
} O.%' 47A  
} `czL$tN<P  
} cZ{-h  
} M}]E,[  
4#oLf1  
堆排序: B=mk@gX,G  
 *TEgV  
package org.rut.util.algorithm.support; n-P)X<\  
#G;0yB:76  
import org.rut.util.algorithm.SortUtil; J1Ay^*qRU  
?n 9<PMo  
/** yaiw|j`A  
* @author treeroot j`GL#J[wqQ  
* @since 2006-2-2 t<Iy `r7 1  
* @version 1.0 F|t3%dpj  
*/ }6;v`1Hr  
public class HeapSort implements SortUtil.Sort{ Z9MT, "  
f,ajo   
/* (non-Javadoc) l cHqg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Gc#D:zU  
*/ ,,hW|CmN30  
public void sort(int[] data) { dVh*  a  
MaxHeap h=new MaxHeap(); h7iI=[_V  
h.init(data); %. =B=*  
for(int i=0;i h.remove(); Gm 0&y  
System.arraycopy(h.queue,1,data,0,data.length); M PhG:^g  
} ,U\F <$O  
%z}{jqD&:X  
private static class MaxHeap{ ai!zb2j!E  
@pcmVsIp  
void init(int[] data){ U8+5{,$\.  
this.queue=new int[data.length+1]; qHT_,\l2  
for(int i=0;i queue[++size]=data; Q:6i 3 Nr/  
fixUp(size); aXAV`%b  
} 'rZYl Qm  
} kf3 u',}R  
BB&7VSgc-  
private int size=0; <<,YgRl2  
95 7Cr  
private int[] queue; +}eGCZra  
rq;Xcc  
public int get() { &R? \q*  
return queue[1]; oDtgB O<  
} !Nu ~4  
Z%]s+V)st  
public void remove() { \OV><|Lkh  
SortUtil.swap(queue,1,size--); sYQ=nL  
fixDown(1); .DzFt c  
} v##k,R.d  
file://fixdown $IZ02ZM$  
private void fixDown(int k) { PyOj{WX>W  
int j; E;Akm':  
while ((j = k << 1) <= size) { zGfF.q}  
if (j < size %26amp;%26amp; queue[j] j++; ^W&qTSjh  
if (queue[k]>queue[j]) file://不用交换 9~ [Sio~  
break; v1s.j2T  
SortUtil.swap(queue,j,k); 5%+M:B  
k = j; sp=;i8Y 3  
} C5q n(tv  
} o5NV4=  
private void fixUp(int k) { f-lM[\ma_  
while (k > 1) { IY Ilab\TZ  
int j = k >> 1; 1{ TmK9U  
if (queue[j]>queue[k]) =0Z^q0.  
break; FaNr}$Pe  
SortUtil.swap(queue,j,k); >l<`)4*H  
k = j; op\'T;xIu  
} 3#O R fr(  
} m&o6j>C  
xc4g`Xi  
} _$g2;X >  
(!^i6z0Sp  
} E}7@?o7u}  
N- !>\n  
SortUtil: v}vwk8  
n};:*N! v  
package org.rut.util.algorithm; 7Nu.2qE  
TuF;>{~}  
import org.rut.util.algorithm.support.BubbleSort; ,".1![b  
import org.rut.util.algorithm.support.HeapSort; qL;OE.?oA  
import org.rut.util.algorithm.support.ImprovedMergeSort; P2U^%_~  
import org.rut.util.algorithm.support.ImprovedQuickSort;  `7v"(  
import org.rut.util.algorithm.support.InsertSort; >(>,*zP<9  
import org.rut.util.algorithm.support.MergeSort; 3sh}(  
import org.rut.util.algorithm.support.QuickSort; [{}Hk%wlX  
import org.rut.util.algorithm.support.SelectionSort; FX"j8i/N  
import org.rut.util.algorithm.support.ShellSort; V7+fNr]I  
reBAxmt   
/** ~pv|  
* @author treeroot %T~3xQ  
* @since 2006-2-2 MBeubS  
* @version 1.0 Wu}84W"!.V  
*/ 16J" QUuG  
public class SortUtil { ><t4 f(d  
public final static int INSERT = 1; 8>\tD  
public final static int BUBBLE = 2; J@ CKgE  
public final static int SELECTION = 3; A_:CGtv:  
public final static int SHELL = 4; Mm&#I[:  
public final static int QUICK = 5; ECZ`I Z.  
public final static int IMPROVED_QUICK = 6; $N;Nvp2  
public final static int MERGE = 7; <$ "   
public final static int IMPROVED_MERGE = 8; U ]o  
public final static int HEAP = 9; zJ"`40V*;  
U=kP xe  
public static void sort(int[] data) { e7n[NVrX  
sort(data, IMPROVED_QUICK); <8 $fo  
} r]sN I[  
private static String[] name={ S.4gfY  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" DlMT<ld  
}; | e? :Uq  
^~ 95q0hq:  
private static Sort[] impl=new Sort[]{ 5_H`6-q  
new InsertSort(), _l{`lQ}  
new BubbleSort(), *VuiEBG  
new SelectionSort(), >/BMA;`  
new ShellSort(), [w1 4hHnq  
new QuickSort(), pXoD*o b  
new ImprovedQuickSort(),  ktA5]f;  
new MergeSort(), x6qQ Y<>  
new ImprovedMergeSort(), Whd\Ub8(  
new HeapSort() u~]O #v  
}; uK6'TJ  
n'5LY9"  
public static String toString(int algorithm){ ;2k!KW@  
return name[algorithm-1]; o)V@|i0Js  
} Z9)-kRQz=r  
R^hlfKnt  
public static void sort(int[] data, int algorithm) { ><&>JgM  
impl[algorithm-1].sort(data); *eF'<._[U  
} V_x8 Q+~?  
3 i*HwEh  
public static interface Sort { c :d.mkF\  
public void sort(int[] data); P]~apMi:  
} `X8wnD  
(XU( e  
public static void swap(int[] data, int i, int j) { qh]D=i  
int temp = data; }xA Eu,n^  
data = data[j]; 99KW("C1F  
data[j] = temp; VUneCt%  
} ITt*TuS 2c  
} 1_=I\zx(  
评价一下你浏览此帖子的感受

精彩

感动

搞笑

开心

愤怒

无聊

灌水
描述
快速回复

您目前还是游客,请 登录 或 注册
如果您在写长篇帖子又不马上发表,建议存为草稿
认证码:
验证问题:
10+5=?,请输入中文答案:十五