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
  • 8579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 ?z A'5q  
插入排序: 3Au3>q,  
yf7p,_E/  
package org.rut.util.algorithm.support; RV^ N4q4  
wWjZXsOd  
import org.rut.util.algorithm.SortUtil; #[$^M:X.  
/** 5Fa.X|R~  
* @author treeroot Fq\vFt|m<  
* @since 2006-2-2 .!|\Y!]^r  
* @version 1.0 XS+2OutVo  
*/ E Dh$UB)  
public class InsertSort implements SortUtil.Sort{ y&;ytNG&<  
_Q)rI%A2  
/* (non-Javadoc) /dGpac  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QP HibPP:  
*/ [XK^3pT_  
public void sort(int[] data) { XdS&s}J[I  
int temp; {/|RKV83  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x_Y03__/  
} +/+:D9j ,  
} 4yy9m8/  
} d)hA'k  
BMaw]D  
} Eod'Esye5  
*Ae> ,LyE  
冒泡排序: )LOV)z|}  
t!^ j0q  
package org.rut.util.algorithm.support; "u29| OY  
pjG/`  
import org.rut.util.algorithm.SortUtil; 'Lm\ r+$F  
W}^X;f  
/** zsM3 [2E*  
* @author treeroot D@.+B`bA  
* @since 2006-2-2 ;W"=s79  
* @version 1.0 z)AZ:^!O  
*/ LC8&},iu  
public class BubbleSort implements SortUtil.Sort{ 4Wsp PHj  
1nGpW$Gx  
/* (non-Javadoc) 2h=QJgpCG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z'hHXSXM  
*/ !q]@/<=  
public void sort(int[] data) { /:S&1'=  
int temp; 3` ,u^ w  
for(int i=0;i for(int j=data.length-1;j>i;j--){ AN)exU ?  
if(data[j] SortUtil.swap(data,j,j-1); Bh<DqN  
} _m0B6?KJ  
} Ht`kmk;I)  
}  ylTX  
} r@WfZ  Z  
]*/%5ZOI&  
} sKu/VAh x  
+g.lLb*#  
选择排序: * I)F5M  
eHX;*~e6)  
package org.rut.util.algorithm.support; <rQ+ErDA  
o paRk.p  
import org.rut.util.algorithm.SortUtil; 7 &O 0  
YB`1S  
/** ]7|Zs]6  
* @author treeroot cmcR @zv  
* @since 2006-2-2 "+dByaY  
* @version 1.0 - K%hug  
*/ 1iLrKA  
public class SelectionSort implements SortUtil.Sort { >^!)G^B  
6j 2mr6o  
/* [N=v=J9  
* (non-Javadoc) 8?l/x  
* yq6Gyoi<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TmEJ!)*  
*/ DH IC:6EY  
public void sort(int[] data) { G*N}X3H:o  
int temp; ==!k99`f,  
for (int i = 0; i < data.length; i++) { h85 kQ^%  
int lowIndex = i; ov$S   
for (int j = data.length - 1; j > i; j--) { wk9qyv<  
if (data[j] < data[lowIndex]) { ]K0G!TR<  
lowIndex = j; BmhIKXE{*  
} i:/Ws1=q  
} q+ZN$4m  
SortUtil.swap(data,i,lowIndex); OyG#  
} *4 HogC  
} n.l7V<1  
G4<M@ET  
} S4O'N x  
fUKi@*^ZUa  
Shell排序: oVAY}q|wU  
:iEIo7B  
package org.rut.util.algorithm.support; R!z32 <5k  
`fM]3]x>  
import org.rut.util.algorithm.SortUtil; ]tsp}M@  
gt \O  
/** wg}rMJoG|  
* @author treeroot 4 Q<c I2|  
* @since 2006-2-2 wAA9M4  
* @version 1.0 is6M{K3  
*/ JqTR4[`Z\  
public class ShellSort implements SortUtil.Sort{ Dkyw3*LCn%  
;N?raz2mEi  
/* (non-Javadoc) N~! G AaD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sZh| <2  
*/ lHI?GiB@  
public void sort(int[] data) { Y'U]!c9  
for(int i=data.length/2;i>2;i/=2){ n4A#T#D!t3  
for(int j=0;j insertSort(data,j,i); s`dwE*~  
} 9D`p2cO  
} YZ(tjIgQ  
insertSort(data,0,1); ,t|qhJF  
} Lk`,mjhk  
~ !7!Y~(+  
/** bNh~=[E  
* @param data hi0-Sw  
* @param j wQw&.)T  
* @param i T`W37fz0  
*/ 6` 4,  
private void insertSort(int[] data, int start, int inc) { phP%  
int temp; =IEei{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); XGcl9FaO}  
} Mh@RO|F  
} {^A,){uX]  
} 60XTdJkDkA  
4S\St <  
} M $\!SXL  
79d< ,q;uR  
快速排序: Sau?Y  
[J\! 2\Oo  
package org.rut.util.algorithm.support; @3_."-d  
#q9cjEd_7  
import org.rut.util.algorithm.SortUtil; .vov ,J!Y  
XtftG7r9S  
/** >k9W+mk  
* @author treeroot j|w_BO 9  
* @since 2006-2-2  YF$nL(  
* @version 1.0 h { M=V  
*/ ,/Al'  
public class QuickSort implements SortUtil.Sort{ s<'WTgy1i  
W%P$$x5&  
/* (non-Javadoc) t2hI^J0y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W{X5~w(  
*/ 8dlhL8#  
public void sort(int[] data) { C+vk9:"  
quickSort(data,0,data.length-1); Xmv^O  
} @$R^-_m  
private void quickSort(int[] data,int i,int j){ \rSofn#c  
int pivotIndex=(i+j)/2; uZXG"  
file://swap \}:;kO4f  
SortUtil.swap(data,pivotIndex,j); I*EHZctH  
;.I,R NM  
int k=partition(data,i-1,j,data[j]); lnWs cb3t  
SortUtil.swap(data,k,j); 8c<OX!  
if((k-i)>1) quickSort(data,i,k-1); ftRzgW);  
if((j-k)>1) quickSort(data,k+1,j); $^5c8wT  
bOdQ+Y6  
} 4YyVh.x  
/** W0\ n?$ZC~  
* @param data tE"IE$$1  
* @param i TFI$>Oz|  
* @param j ={B?hjo<-  
* @return NxrfRhaU3  
*/ 3Q2z+`x'  
private int partition(int[] data, int l, int r,int pivot) { OR<%h/ \f  
do{ .9$ 7 +  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); D[Kq`  
SortUtil.swap(data,l,r); 0}wmBSl  
} 4|/=]w  
while(l SortUtil.swap(data,l,r); qK,PuD7i"  
return l; Ry`Y +  
} 6fV;V:1{  
^+u/Lw&  
} b>'y[P!  
xi}3)5  
改进后的快速排序: NU(YllPB  
d_)VeuE2  
package org.rut.util.algorithm.support; GEJy?$9   
 ;GZ/V;S  
import org.rut.util.algorithm.SortUtil;  Fm`c  
;hCUy=m.  
/** _\u?]YTv  
* @author treeroot d#u*NwY}  
* @since 2006-2-2 R:, |xz  
* @version 1.0 =S<E[D{V`  
*/ ;3 /*Z5p  
public class ImprovedQuickSort implements SortUtil.Sort { w3 K>IDWI7  
0xzS9  
private static int MAX_STACK_SIZE=4096; !w{(}n2Wq  
private static int THRESHOLD=10; YjzGF=g#  
/* (non-Javadoc) [KNA5(Y0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SxW.dT8{  
*/ VL/KC-6  
public void sort(int[] data) { Xr]<v%,C  
int[] stack=new int[MAX_STACK_SIZE]; p{w:^l(  
E#(dri*#t  
int top=-1; U@"f(YL+"  
int pivot; ANlzF& K  
int pivotIndex,l,r; !d{Ijs'T  
2}kJN8\F  
stack[++top]=0; .M>g`UW  
stack[++top]=data.length-1; RFT`r  
ldRisL  
while(top>0){ ]Nb~-)t%B  
int j=stack[top--]; 2A(IsUtqO:  
int i=stack[top--]; @0fiui_  
Fg^Z g\X3  
pivotIndex=(i+j)/2; +W^$my)<  
pivot=data[pivotIndex]; +.IncY8C$  
g%%j"Cz1  
SortUtil.swap(data,pivotIndex,j); f6JC>Np  
k'PNfx\K  
file://partition `c/mmS  
l=i-1; ?.6fVSa  
r=j; o>@9[F,h+  
do{ U%l<48@8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _7N^<'B  
SortUtil.swap(data,l,r); %]fi;Z  
} r 9whW;"q  
while(l SortUtil.swap(data,l,r); !"s~dL,7  
SortUtil.swap(data,l,j); D |9ItxYu  
(<ngdf`,  
if((l-i)>THRESHOLD){ ~zyD=jx P9  
stack[++top]=i; V@`A:Nc_>  
stack[++top]=l-1; Z lR2  
} CNrK]+>  
if((j-l)>THRESHOLD){ C#:L.qK  
stack[++top]=l+1; 5v5K}hx  
stack[++top]=j; cnR18NK  
} :i/uRR  
x|U[|i,;  
} /}R*'y  
file://new InsertSort().sort(data); # mW#K  
insertSort(data); nPj &a  
} &0JCZ /e  
/** qExmf%q:q  
* @param data dobqYd4`  
*/ S*S @a4lV7  
private void insertSort(int[] data) { MznMt2-u  
int temp; T}y@ a^#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {O (@}  
} ["SD'  
} 0)E`6s#M  
} <S(`e/#[  
7(]M`bBH  
} H@V+Q}  
oh.8WlI  
归并排序: #6F/:j;  
Qcs >BOV~  
package org.rut.util.algorithm.support; *S] K@g  
7N}==T89[  
import org.rut.util.algorithm.SortUtil; faPgp  
IT0 [;eqR  
/** \4"01:u'  
* @author treeroot Gu5%Pou  
* @since 2006-2-2 +w9X$<?_  
* @version 1.0 %tT=q^%5  
*/ mFW/xZwR,5  
public class MergeSort implements SortUtil.Sort{ CINC1Ll_24  
6/l{e)rX2o  
/* (non-Javadoc) w6@8cNXK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n}toUqUnk\  
*/ AlhPT (  
public void sort(int[] data) { ~WX40z  
int[] temp=new int[data.length]; 2pV@CT  
mergeSort(data,temp,0,data.length-1); ]2@g 5H}M  
} 3p#BEH<re  
tP0!TkTo9  
private void mergeSort(int[] data,int[] temp,int l,int r){ hp!. P1b  
int mid=(l+r)/2; hWfC"0  
if(l==r) return ; 2sOetmWE7  
mergeSort(data,temp,l,mid); [zc8f  
mergeSort(data,temp,mid+1,r); V jZx{1kCR  
for(int i=l;i<=r;i++){ 8bW,.to(?x  
temp=data; 9 t o2V  
} }4wIfI83K,  
int i1=l; KXbD7N.  
int i2=mid+1; t7qzAr  
for(int cur=l;cur<=r;cur++){ 82A[[^`  
if(i1==mid+1) RZ GD5`n  
data[cur]=temp[i2++]; XpoEZ|0  
else if(i2>r) CvB)+>oa  
data[cur]=temp[i1++]; X@up=%(  
else if(temp[i1] data[cur]=temp[i1++]; U!Eo*?LU$  
else .|x" '3#  
data[cur]=temp[i2++]; xe9V'wICp(  
} #Oq~ZV|<l  
} PBY ^m+  
mYw9lM  
} Z9k"&F ~u}  
m5\/7 VC  
改进后的归并排序: :+$/B N:iO  
EViQB.3w\  
package org.rut.util.algorithm.support; ?*: mR|=  
D<UX^hU   
import org.rut.util.algorithm.SortUtil; O [v(kH'  
;@ lC08SE  
/** I%gDqfdL  
* @author treeroot GZk{tTv  
* @since 2006-2-2 qTi%].F"G  
* @version 1.0 .C?rToCY  
*/ 9w08)2$ Na  
public class ImprovedMergeSort implements SortUtil.Sort { VKb'!Ystl  
i)mQ?Y#o  
private static final int THRESHOLD = 10; \*.u (8~2o  
$zYo~5M?i-  
/*  SE D_^  
* (non-Javadoc) d;WXlE;  
* z57|9$h}w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >4x~US[VB  
*/ ,V{Cy`bi  
public void sort(int[] data) { ;+Uc} =  
int[] temp=new int[data.length]; ua HB\Uc  
mergeSort(data,temp,0,data.length-1); *h Z{>  
} R@Bnrk  
sH `(y)`_  
private void mergeSort(int[] data, int[] temp, int l, int r) { jI~GRk  
int i, j, k; Sz3Tp5b  
int mid = (l + r) / 2; EL+P,q/b  
if (l == r) kNDN<L  
return; -eSZpzp  
if ((mid - l) >= THRESHOLD)  0gOB $W  
mergeSort(data, temp, l, mid); ';.n#  
else iqh"sx{5bp  
insertSort(data, l, mid - l + 1); z*BGaSX %  
if ((r - mid) > THRESHOLD) !3T,{:gyrI  
mergeSort(data, temp, mid + 1, r); O0cKmh6=  
else t) h{ w"v  
insertSort(data, mid + 1, r - mid); )Ept yH  
g_2EH  
for (i = l; i <= mid; i++) { \V/;i.ng  
temp = data; />[X k  
} 7PG|e#  
for (j = 1; j <= r - mid; j++) { G$_=rHt_%  
temp[r - j + 1] = data[j + mid]; 6p1)wf.J  
} "+GKU)  
int a = temp[l]; vhot-rBN  
int b = temp[r]; ?)i`)mu'  
for (i = l, j = r, k = l; k <= r; k++) { ed6eC8@  
if (a < b) { &R~)/y0]  
data[k] = temp[i++]; \CDzVO0^  
a = temp; t9(sSl  
} else { 5U5)$K'OA  
data[k] = temp[j--]; -&3mOn& (1  
b = temp[j]; =abBD   
} zy!mP  
} ;0 No@G;z  
} _hbTxyj  
qsTB)RdjP%  
/** b i 8Qbo4  
* @param data }6#u}^gy  
* @param l .6xIg+  
* @param i 6Lhfb\2?  
*/ cc_v4d{x  
private void insertSort(int[] data, int start, int len) { gHe%N? '  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); QGI_aU  
} E,g5[s@  
} 7m +d;x2  
} F4`5z)<*  
} ]f< H?  
%tC3@S  
堆排序: ;;; {<GEQ  
# mK?K  
package org.rut.util.algorithm.support; hfQx$cv6  
\yNe5  
import org.rut.util.algorithm.SortUtil; 4(O;lVT}  
s_`=ugue  
/** k5ZkD+0Jo  
* @author treeroot `SH#t3 5,  
* @since 2006-2-2 oM4Q_An  
* @version 1.0 >L{s[pLJ  
*/ _}RzJKl@  
public class HeapSort implements SortUtil.Sort{ =i:6&Y~VGq  
 J0Ik@  
/* (non-Javadoc) t3b64J[A{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UI}df<Ge  
*/ ~|t 7  
public void sort(int[] data) { ^N`bA8  
MaxHeap h=new MaxHeap(); ZlxJY%o eu  
h.init(data); s1| +LT ,D  
for(int i=0;i h.remove(); r"uOf;m  
System.arraycopy(h.queue,1,data,0,data.length); X5`#da  
} cm!|A)~  
<!qv$3/7  
private static class MaxHeap{ 4_'($FC1  
2&Hn%q)  
void init(int[] data){ +o7Np| Ou  
this.queue=new int[data.length+1]; 7UzbS,$x  
for(int i=0;i queue[++size]=data; X 'W8 mqk  
fixUp(size); eO?.8OM-a  
} 5C&]YT3 )  
} A0>u9Bn"Qw  
eYD|`)-f<^  
private int size=0; `3KXWN`.s  
_T)G?iv:&  
private int[] queue; 2A^>>Q/,u  
\vR&-+8dk  
public int get() { +o94w^'^$b  
return queue[1]; Z F&aV?  
} a&*fk?o  
43p0k&;-7  
public void remove() { f3u^:6U~  
SortUtil.swap(queue,1,size--); M*x1{g C/  
fixDown(1); Ous_269cM  
} UNB'Xjp}@  
file://fixdown !0+!%Nr>J  
private void fixDown(int k) { {vL4:K  
int j; Ka$YKY,  
while ((j = k << 1) <= size) { [EX@I =?  
if (j < size %26amp;%26amp; queue[j] j++; /v^1/i  
if (queue[k]>queue[j]) file://不用交换 Aa#WhF  
break; ; Fi(zl  
SortUtil.swap(queue,j,k); ^Cm9[1p  
k = j; 2kS]:4)T  
} ARt+"[.*p  
} OB{d^e}  
private void fixUp(int k) { j(*ZPo>oD  
while (k > 1) { Gj%cU@2  
int j = k >> 1; 2V*<HlqOif  
if (queue[j]>queue[k]) RIDzNdM>U  
break; }hPFd  
SortUtil.swap(queue,j,k); $B3<"  
k = j; |9X$@R  
} I2R" Y<  
} G?t<4MT v  
yK #9)W-  
} jhN]1t /\X  
:@H&v%h(u  
} ",hPy[k  
5[py{Gq  
SortUtil: Qq.ht  
xpb,Nzwt^  
package org.rut.util.algorithm; NLz[ F`I  
E>}(r%B  
import org.rut.util.algorithm.support.BubbleSort; +oT/v3,  
import org.rut.util.algorithm.support.HeapSort; PqO PRf  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4%(\y"T  
import org.rut.util.algorithm.support.ImprovedQuickSort; [A.ix}3mm  
import org.rut.util.algorithm.support.InsertSort; scsN2#D7U/  
import org.rut.util.algorithm.support.MergeSort; I!L`W _  
import org.rut.util.algorithm.support.QuickSort; _+vE(:T  
import org.rut.util.algorithm.support.SelectionSort; >5aZ?#TS1  
import org.rut.util.algorithm.support.ShellSort; VW[!%<  
2qF ?%  
/** R2 I 7d'|v  
* @author treeroot <Xsy{7  
* @since 2006-2-2 {H5a.+-(bE  
* @version 1.0 ?C[W~m P  
*/ =@%Ukrd@  
public class SortUtil { (zO)J`z>  
public final static int INSERT = 1; ~KW|<n4m  
public final static int BUBBLE = 2; k\qF> =  
public final static int SELECTION = 3; )M!6y%b67  
public final static int SHELL = 4; :U}.  
public final static int QUICK = 5; :&{:$-h!  
public final static int IMPROVED_QUICK = 6; _=wu>h&7  
public final static int MERGE = 7; [vJLj>@  
public final static int IMPROVED_MERGE = 8; I)B+h8l72<  
public final static int HEAP = 9; K>tubLYh  
"\x<Zg;  
public static void sort(int[] data) { #'@pL0dj  
sort(data, IMPROVED_QUICK); 8{t^< j$n  
} zree}VqD;5  
private static String[] name={ fnwhkL#8  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~q.a<B`,t  
}; 9uNkd2 #  
L>&o_bzp  
private static Sort[] impl=new Sort[]{ Qrnc;H9)  
new InsertSort(), !Rq.L  
new BubbleSort(), 1TagQ  
new SelectionSort(), <yw6Om:n<  
new ShellSort(), xE2sb*  
new QuickSort(), &RzkM4"  
new ImprovedQuickSort(), WB7pdSZ  
new MergeSort(), xn fMx$fD  
new ImprovedMergeSort(), u?J!3ZEtb  
new HeapSort() nkp,  
}; 5 +Ei! E89  
us ,!U  
public static String toString(int algorithm){ *u i!|;  
return name[algorithm-1]; v*.[O/,EBR  
} JjXuy7XQ  
3u)NkS=  
public static void sort(int[] data, int algorithm) { rY~!hZ  
impl[algorithm-1].sort(data); ,#u"$Hz8p  
} _DlX F  
>;$C@  
public static interface Sort { cIL I%W1  
public void sort(int[] data); A *$JF>`7  
} j;GH|22  
vpS&w  
public static void swap(int[] data, int i, int j) { f6I$d<  
int temp = data; *v' d1.Z  
data = data[j]; @Nm;lZK  
data[j] = temp; kXfTNMb  
} Q1A_hW2x  
} Z4^O`yS9+  
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
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