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
  • 7814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。 O/%< }3Sq  
插入排序: XB hb`AG  
z9 u$~  
package org.rut.util.algorithm.support; -37a.  
gsar[gZ  
import org.rut.util.algorithm.SortUtil; $ZPX]2D4B#  
/** _fFU#k:MU  
* @author treeroot }y%`)lz~;  
* @since 2006-2-2 Q0?\]2eet9  
* @version 1.0 S,fCV~Cio?  
*/ T&Xl'=/  
public class InsertSort implements SortUtil.Sort{ n;HHogA  
_s,ao '/  
/* (non-Javadoc) vP%tk s+.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P=N$qz$U  
*/ LVIAF0kX  
public void sort(int[] data) { 75!9FqMZ}  
int temp; @ufo$?D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F+UG'4%  
} 2 gq$C"  
} yn AB  
} {>3\ N0e5  
o!TQk{0  
} { kSf{>Ia  
;^ wd_  
冒泡排序: JG`Q;K  
 v7  
package org.rut.util.algorithm.support; pD"vRbYF  
EqiFy"H  
import org.rut.util.algorithm.SortUtil; 3H\w2V  
U=Y)V%  
/** [$(%dV6O  
* @author treeroot Z#d&|5Xj  
* @since 2006-2-2 gieN9S  
* @version 1.0 +'@+x'/{^  
*/ Jo(`zuLJ  
public class BubbleSort implements SortUtil.Sort{ Th[f9H%  
V~DMtB7  
/* (non-Javadoc) ^Jp&H\gI.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) })xp%<`  
*/ "|Fy+'5}  
public void sort(int[] data) { MiT}L  
int temp; DDT_kK;  
for(int i=0;i for(int j=data.length-1;j>i;j--){ WS-dS6Q}  
if(data[j] SortUtil.swap(data,j,j-1); l:;PXy6)  
} +i ?S  
} +[@z(N-h  
} @[<nQZw:  
} 'AGto'Yy;  
'X).y1'  
} G2 ]H6G$M  
J2q,7wI#  
选择排序: zepop19  
%V &n*3  
package org.rut.util.algorithm.support; 0C<[9Dl.G8  
 mvW%  
import org.rut.util.algorithm.SortUtil; HD,xY4q&N  
(2ur5uk+  
/** $CTSnlPq  
* @author treeroot  j1?j6s  
* @since 2006-2-2 yNW\?Z$@q  
* @version 1.0 T lAR.cV  
*/ |yyO q  
public class SelectionSort implements SortUtil.Sort { "q}FPJ^l_N  
D.D$#O_n.S  
/* iUMY!eqp  
* (non-Javadoc) 2Y}?P+:%>  
* 1"8yLvtn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =4uSFK_L  
*/ U<"WK"SM  
public void sort(int[] data) { v}@xlB=  
int temp; 7*j (*  
for (int i = 0; i < data.length; i++) { rqv))Zo`  
int lowIndex = i; J{[n?/A{  
for (int j = data.length - 1; j > i; j--) { i 8!zu!-0  
if (data[j] < data[lowIndex]) { 4p;aS$Q  
lowIndex = j; T +5X0 Nv  
} @3fn)YQ'  
} KKA~#iCk  
SortUtil.swap(data,i,lowIndex); &<zd.~N"  
} $VAx:Y|  
} 7\_o.(g#-  
u4z&!MT}  
} jF`BjxrG  
JvYPC  
Shell排序: %1pYE Hn  
#T`t79*N  
package org.rut.util.algorithm.support; U$oduY#  
(mxT2"fC  
import org.rut.util.algorithm.SortUtil; ~HQ9i%exg  
dd2[yKC`  
/** f= >O J!:  
* @author treeroot |6G m:jV  
* @since 2006-2-2 L lqM c  
* @version 1.0 !+u"3;%h  
*/ Lb LiB*D#s  
public class ShellSort implements SortUtil.Sort{ dEBcfya  
XdH\OJ  
/* (non-Javadoc) NM)k/?fA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +cb6??H  
*/ jYNrD"n  
public void sort(int[] data) { "#mBcQ;QLV  
for(int i=data.length/2;i>2;i/=2){ B|o2K}%f  
for(int j=0;j insertSort(data,j,i); CJ}5T]WZ  
} `1:{0p2q  
} h|X^dQb]  
insertSort(data,0,1); u!1{Vt87  
} QMv@:Eo  
U%0Ty|$Y   
/** 1+?^0%AC  
* @param data Wg`R_>qQSm  
* @param j @p\}pY$T  
* @param i ;#w3{ NB  
*/ :qC '$dO!  
private void insertSort(int[] data, int start, int inc) { TLehdZ>^  
int temp; ">?vir^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); P2 Vg4   
} `6+"Z=:  
} hy|b6wF&  
} \9-"M;R.d  
{v3P9s(  
} w3jO6*_ M  
|7x\m t  
快速排序: F5S@I;   
DBP9{ x$  
package org.rut.util.algorithm.support; SwZA6R&  
J90v!p-  
import org.rut.util.algorithm.SortUtil; NHlk|Y#6b  
hB{jUP) ";  
/** 4tY ss  
* @author treeroot ;;&}5jcV  
* @since 2006-2-2 sVex (X  
* @version 1.0 I}R0q  
*/ I!^O)4QRx  
public class QuickSort implements SortUtil.Sort{ Y3Q9=u*5  
`p+Zz"/  
/* (non-Javadoc) Dc)dE2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *2jK#9"MP  
*/ y( y8+ZT  
public void sort(int[] data) { &c1A*Pl/:G  
quickSort(data,0,data.length-1); e1P"[|9>R  
} k1Q ?'<`  
private void quickSort(int[] data,int i,int j){ W^"AU;^V56  
int pivotIndex=(i+j)/2; O$cHZs$  
file://swap .1LCXW=  
SortUtil.swap(data,pivotIndex,j); NVRLrJWpp  
u{L!n$D7  
int k=partition(data,i-1,j,data[j]); *g^x*|f6  
SortUtil.swap(data,k,j); 1)Zf3Y8  
if((k-i)>1) quickSort(data,i,k-1); }l=xiAF  
if((j-k)>1) quickSort(data,k+1,j); g:EVhuK  
cp h:y  
} X]y)qV)a[c  
/** ~y7jCcd`  
* @param data =JmT:enV  
* @param i 2it?$8#i  
* @param j )+fh-Ui  
* @return t%8d-+$  
*/ c/ uNM  
private int partition(int[] data, int l, int r,int pivot) { ,cq F3   
do{ 7 x<i :x3  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %.vVEy  
SortUtil.swap(data,l,r); c_>f0i  
} 9YBv|A  
while(l SortUtil.swap(data,l,r); )rixMl &[  
return l; )RcL/n  
} KZeQ47|  
$.bBFWk  
} ZWS`\M  
SCTA=l.  
改进后的快速排序: ZzX~&95G  
."Y e\>k  
package org.rut.util.algorithm.support; /Ju;MeE9  
x|vqNZ\F  
import org.rut.util.algorithm.SortUtil; wiBVuj#  
\7*`}&  
/** jQ)T67  
* @author treeroot J4\qEO  
* @since 2006-2-2  Sr?#S  
* @version 1.0 C$5[X7'  
*/ z0do;_x]E  
public class ImprovedQuickSort implements SortUtil.Sort { GDuMY\1  
F,'exuZ  
private static int MAX_STACK_SIZE=4096; wKsT7c'  
private static int THRESHOLD=10; $r3i2N-I  
/* (non-Javadoc) 7>~5jYP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &e8s65`  
*/ )[Yv?>ib  
public void sort(int[] data) { >i6yl5s  
int[] stack=new int[MAX_STACK_SIZE]; 1w&!H ]%{  
} GiHjzsR  
int top=-1; -xP!"  
int pivot; .e3+s*  
int pivotIndex,l,r; >&U,co$>  
RG4sQ0  
stack[++top]=0; L~KM=[cn  
stack[++top]=data.length-1; T|TO}_x  
y(xJT j  
while(top>0){ G}G#i`6o  
int j=stack[top--]; 7!N2-6GV  
int i=stack[top--]; $ O5UyKI  
,zTy?OQ  
pivotIndex=(i+j)/2; Alxx[l\<J  
pivot=data[pivotIndex]; 0MdDXG-7  
3F<VH  
SortUtil.swap(data,pivotIndex,j); |*0<M(YXN  
{qa Aq%'  
file://partition N~xLu8,  
l=i-1; xoR;=ph  
r=j; L:'J Bhg  
do{ *C:|X b<9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); r#B+(X7LM  
SortUtil.swap(data,l,r); _"w2Uq  
} Xqm::1(-(  
while(l SortUtil.swap(data,l,r); 1N>|yQz  
SortUtil.swap(data,l,j); o+$7'+y1n-  
aX}P|l  
if((l-i)>THRESHOLD){ UCClWr  
stack[++top]=i; >:|q&|x-  
stack[++top]=l-1; ' >rw(3  
} !dC<4qZ\C  
if((j-l)>THRESHOLD){ oTuOw|[  
stack[++top]=l+1; w&KK3*=""  
stack[++top]=j; `WH"%V:"Q  
} ;{%\9nS  
[n$BRk|  
} ^~A>8CQOU  
file://new InsertSort().sort(data); 4zo5}L `Y  
insertSort(data); Z KckAz\#  
} ;{" +g)u  
/** IDG}ZlG  
* @param data d|yAs5@  
*/ 2 FW \O0U  
private void insertSort(int[] data) { wL:flH@  
int temp; LmnymcH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i0$kit  
} 9BuSN*4  
} TBT:/Vfun  
} HI11Jl}{  
| ]X  
} q CnZhJ  
9AJ7h9L  
归并排序: vTx2E6  
x" L20}  
package org.rut.util.algorithm.support; A'&K/)Z  
Y1J=3Y  
import org.rut.util.algorithm.SortUtil; ^i} L-QR  
w_{wBL[3e  
/** n@,G8=J?  
* @author treeroot `.Qi?* ^  
* @since 2006-2-2 $H9%J  
* @version 1.0 L=sYLC6d  
*/ #odIEC/  
public class MergeSort implements SortUtil.Sort{ Ot6aRk  
@-!}BUs?  
/* (non-Javadoc) ,^. 88<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3 C<L  
*/ 5X:*/FuS@  
public void sort(int[] data) { 4k@5/5zsM  
int[] temp=new int[data.length]; #kaY0M  
mergeSort(data,temp,0,data.length-1); -- c"0,7  
} #/<&*Pu5t  
h* u  
private void mergeSort(int[] data,int[] temp,int l,int r){ @8pp EFw  
int mid=(l+r)/2; &b fA.& `  
if(l==r) return ; ZWKg9%y7  
mergeSort(data,temp,l,mid); 5?F__Hx*2  
mergeSort(data,temp,mid+1,r); .G#8a1#  
for(int i=l;i<=r;i++){ zPjHsulK  
temp=data; R&BTA  
} NP/Gn6fr  
int i1=l; 2h1vVF3  
int i2=mid+1; O%5 r[  
for(int cur=l;cur<=r;cur++){ 'DL`Ee\  
if(i1==mid+1) V#S9H!hm$  
data[cur]=temp[i2++]; hUp.tK:X7o  
else if(i2>r) pw)||Q  
data[cur]=temp[i1++]; 6&!PmKFO.  
else if(temp[i1] data[cur]=temp[i1++]; *&^:T~|=!  
else <4g{ fT0  
data[cur]=temp[i2++]; sE Q=dcK  
} ZOeQ+j)|I  
} =pS5uR~  
YW( Qmo7  
} 4;0lvDD  
HoRg^Ai?\  
改进后的归并排序: uP~@U"!  
_0]S69lp  
package org.rut.util.algorithm.support; $+Z)  
W"}M1o  
import org.rut.util.algorithm.SortUtil; %)/P^9I6  
Tk:h@F|B.|  
/** XH}\15X  
* @author treeroot j/f?"VEr  
* @since 2006-2-2 !`,Sfqij  
* @version 1.0 Rld!,t  
*/ hog=ut  
public class ImprovedMergeSort implements SortUtil.Sort { w1OI4C)~  
l0PZ`m+;j  
private static final int THRESHOLD = 10; CsoiyY -2  
w~"KA6^  
/* >aj7||K  
* (non-Javadoc) MbZJ;,e?  
* pgE}NlW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $m].8?  
*/ Q;43[1&3w  
public void sort(int[] data) { 7BK0}sxO  
int[] temp=new int[data.length]; x7jC)M<k0  
mergeSort(data,temp,0,data.length-1); p~BRh  
} V C24sU  
^=RffrlZU  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?fUlgQ }N  
int i, j, k; WJkZ!O$"j  
int mid = (l + r) / 2; QxVq^H  
if (l == r) <SgM@0m  
return; |:xYE{*)H  
if ((mid - l) >= THRESHOLD) \n8] M\<  
mergeSort(data, temp, l, mid); t<z`N-5*  
else Mn2QZp4  
insertSort(data, l, mid - l + 1); El[)?+;D  
if ((r - mid) > THRESHOLD) XWS%zLaK  
mergeSort(data, temp, mid + 1, r); b F"G[pD  
else m'6&9Ja k  
insertSort(data, mid + 1, r - mid); snf~}:&   
7=TF.TW)  
for (i = l; i <= mid; i++) { i|w81p^o  
temp = data; f]`#J%P  
} 4'g;TI^  
for (j = 1; j <= r - mid; j++) { b&~4t/Vq  
temp[r - j + 1] = data[j + mid]; z(_Ss@ $  
} ur$ _  
int a = temp[l]; K1r#8Q!t  
int b = temp[r]; E:JJ3X|  
for (i = l, j = r, k = l; k <= r; k++) { K?B{rE Lp  
if (a < b) { RrX[|GLSJ  
data[k] = temp[i++]; -@yh> 8v  
a = temp; j9?}j #@  
} else { 6r"eN%m  
data[k] = temp[j--]; wQP^WzNE  
b = temp[j]; D coX+8 7  
}  -xSA  
} )uj Ex7&c  
} Hfw q/Is  
>}`:Ac  
/** bJRN;g  
* @param data lef2X1w}!  
* @param l s \;"X  
* @param i =XucOli6  
*/ DoJ\ q+  
private void insertSort(int[] data, int start, int len) { l6YtEHNG  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !UG 7Uer  
}  x }\64  
} P `}zlml  
} ^?cz,N~  
}  `x l   
uD1e!oU  
堆排序: ?t/~lv  
!c}O5TI|#  
package org.rut.util.algorithm.support; pm*xb]8y  
K/tRe/t }  
import org.rut.util.algorithm.SortUtil; o<<xY<  
U1DXe h~V  
/** %_+2@\  
* @author treeroot 0fb`08,^  
* @since 2006-2-2 "uuVy$6C  
* @version 1.0 C\/xl#e<@  
*/ r"``QmM  
public class HeapSort implements SortUtil.Sort{ |uqf:V`z:  
9K5pwC\$%  
/* (non-Javadoc) 0Sle  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r\b3AKrIN  
*/ :*ing  
public void sort(int[] data) { <KE 1f7c  
MaxHeap h=new MaxHeap(); xIxn"^'  
h.init(data); 9:ze{ c $  
for(int i=0;i h.remove();  :rHJ4Tl  
System.arraycopy(h.queue,1,data,0,data.length);  {Or;  
} wF <n=  
RIb4!!',c  
private static class MaxHeap{ OK{quM5  
/4a._@1h[y  
void init(int[] data){ k5D%y3|9  
this.queue=new int[data.length+1]; q#vQv 5  
for(int i=0;i queue[++size]=data; ;pqg/>W'  
fixUp(size); Xe<sJ. &Wf  
} lz YEx  
} 4US"hexE<  
IPgt|if^  
private int size=0; P%{^i]  
y.WEj?EL  
private int[] queue; V,q](bg  
jDy-)2<  
public int get() { JHz [7  
return queue[1]; Po ZuMF  
} B$b +Ymu  
|K.mP4CKY  
public void remove() { #9X70|f  
SortUtil.swap(queue,1,size--); 9[G[$c  
fixDown(1); H *[_cqnv  
} J3n-`k8  
file://fixdown c lNkph  
private void fixDown(int k) { {B[=?6tQ  
int j; ^r*r w=  
while ((j = k << 1) <= size) { &;+ -?k|  
if (j < size %26amp;%26amp; queue[j] j++; /lo2y?CS*  
if (queue[k]>queue[j]) file://不用交换 4:|S` jm  
break; vH#huZA?7  
SortUtil.swap(queue,j,k); LG<J;&41~S  
k = j; _(h&7P9  
} Wn(6,MDUN  
} Zy o[(`y  
private void fixUp(int k) { $u9K+>.  
while (k > 1) { b]x4o#t  
int j = k >> 1; MrDc$p W G  
if (queue[j]>queue[k]) /4g1zrU  
break; +tVaBhd!  
SortUtil.swap(queue,j,k); c )G3k/T5  
k = j; 5<UVD:~z  
} dR"@`  
} +xrr? g  
Qk,I^1w?7  
} 1UE6 4Kl:S  
Ed_N[ I   
} 4"(<X  
cUA7#1\T=  
SortUtil: nPye,"A Ol  
.w0s%T,8}^  
package org.rut.util.algorithm; YhDtUt}?  
8DegN,?  
import org.rut.util.algorithm.support.BubbleSort; W3 'q\+  
import org.rut.util.algorithm.support.HeapSort; CE/Xfh'44  
import org.rut.util.algorithm.support.ImprovedMergeSort; LN@F+CyDc  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1IZ3=6  
import org.rut.util.algorithm.support.InsertSort; mGJasn  
import org.rut.util.algorithm.support.MergeSort; \3pc"^W  
import org.rut.util.algorithm.support.QuickSort; y#q?A,C@n  
import org.rut.util.algorithm.support.SelectionSort; T~Gvp0r}h  
import org.rut.util.algorithm.support.ShellSort; }Q=!Y>Tc  
)pq;*~ IBI  
/** vvKEv/pN7  
* @author treeroot @JyK|.b#0  
* @since 2006-2-2 b/C`J p  
* @version 1.0 X22[tqg;&  
*/ no< ^f]33  
public class SortUtil { mg*qiScfW  
public final static int INSERT = 1; . r[Hu40p  
public final static int BUBBLE = 2; A'jP7 P  
public final static int SELECTION = 3; a{ ?`t|  
public final static int SHELL = 4; C/TF-g-_Y  
public final static int QUICK = 5; 2T V X)q<\  
public final static int IMPROVED_QUICK = 6; 0tEYU:Qu  
public final static int MERGE = 7; 2vAQ  
public final static int IMPROVED_MERGE = 8; wtH? [>S;)  
public final static int HEAP = 9; o]; [R  
fjs [f'L  
public static void sort(int[] data) { .ys6"V|31  
sort(data, IMPROVED_QUICK); !f&Kf,#b`  
} >h k=VyU;  
private static String[] name={ ^eR%N8Z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" HN&Z2v   
}; `kZ@Zmj#  
_Jme!Oaa  
private static Sort[] impl=new Sort[]{ l zYnw)Pv  
new InsertSort(), ?34 e-  
new BubbleSort(), J|w\@inQ  
new SelectionSort(), 5A sP5  
new ShellSort(), x)rM/Kq  
new QuickSort(), h $L/<3oP6  
new ImprovedQuickSort(), PzA|t;*  
new MergeSort(), |aT| l^2R@  
new ImprovedMergeSort(), v(EEG/~  
new HeapSort() +YqZ ((  
}; uWM{JEOl  
~:3QBMk::  
public static String toString(int algorithm){ 4*e0 hWp  
return name[algorithm-1]; 59O?_F9  
} Z(Bp 0a  
20Z8HwQi  
public static void sort(int[] data, int algorithm) { q^r#F#*1l  
impl[algorithm-1].sort(data); Y@b.sMg{  
} uoXAQ6k  
?)`L$Vr=  
public static interface Sort { WnGGo ' Z  
public void sort(int[] data); c2e tc8  
} ad:&$  
/Rg*~Ers *  
public static void swap(int[] data, int i, int j) { %oq[,h <X  
int temp = data; o9F/y=.r=  
data = data[j]; A9kzq_ 3  
data[j] = temp; V}SBuQp"  
} Vv8jEZ8  
} ^Nmg07_R  
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 登录注册
欢迎提供真实交流,考虑发帖者的感受
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八