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
  • 6904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。 +fBbW::R^  
插入排序: [AstD9  
=aX;-  
package org.rut.util.algorithm.support; z/dpnGX  
VJ8cls<  
import org.rut.util.algorithm.SortUtil; lyc ]E 9  
/** [K1RP.  
* @author treeroot +*Y/+.4WE$  
* @since 2006-2-2 F=?0:2P0bD  
* @version 1.0 b= amd*  
*/ 4^/MDM@  
public class InsertSort implements SortUtil.Sort{ jNd."[IrO  
yr8 b?m.x  
/* (non-Javadoc) &66-0d+Sh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !YYI{BJ7:N  
*/ pN|BtrN{  
public void sort(int[] data) { =4+Wx8ZeW  
int temp; 7jPPN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #;4<dDVy  
} [CTE"@A  
} >c %*:a  
} >1q W*  
'M8wjU  
} us%dw&   
2l^hnog|  
冒泡排序: T?B753I  
0' j/ 9vm  
package org.rut.util.algorithm.support; -9W)|toWb"  
O~D>F*_^j  
import org.rut.util.algorithm.SortUtil; .K%1{`.|  
Wwo'pke  
/** >|Yr14?7  
* @author treeroot xvn@zi  
* @since 2006-2-2 j]Y`L?!Q  
* @version 1.0 !:"$1kh1("  
*/ WD.td  
public class BubbleSort implements SortUtil.Sort{ 4}-{sS}MP  
+||y/}1  
/* (non-Javadoc) <~s{&cL!%#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *f<+yF{=A  
*/ .S4c<pMap  
public void sort(int[] data) { r I)Y W0  
int temp; .xG3`YH  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~nLE?>x|Z  
if(data[j] SortUtil.swap(data,j,j-1); XLQt>y)  
} ul@G{N{L   
} $o}Ao@WkO  
} <Cv 6wC=  
} .Y`;{)  
R2K{vs  
} Lh`B5  
\MhSIlM#  
选择排序: ,, S]_S  
F%|F-6  
package org.rut.util.algorithm.support; PiQs Vk  
P?WS=w*O0  
import org.rut.util.algorithm.SortUtil; .t53+<A  
-(~OzRfYi  
/** &=ZVU\o:  
* @author treeroot dZMf5=tb  
* @since 2006-2-2 3(&f!<Uy  
* @version 1.0 <cig^B{nX  
*/ Uphme8SX  
public class SelectionSort implements SortUtil.Sort { $>if@}u  
VDy2 !0  
/* Kd,8PV*_  
* (non-Javadoc) #POVu|Y;h  
* :[P)t %  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4gKu8G  
*/ 7# !RX3  
public void sort(int[] data) { Ov<EOK+^  
int temp; '\g-z  
for (int i = 0; i < data.length; i++) { I!-"SuBy4J  
int lowIndex = i; ut/3?E1 Z  
for (int j = data.length - 1; j > i; j--) { EjY8g@M;t  
if (data[j] < data[lowIndex]) { ECW=865jL  
lowIndex = j; WZh%iuI{C  
} D_s0)|j$cy  
} >G#SfE$0  
SortUtil.swap(data,i,lowIndex); WlJ=X$  
} X>-|px$vy  
} k4i*80  
."X}A t  
} xOY %14%Y  
t,P_&0X  
Shell排序: mc FSWmq  
YmwUl>@{  
package org.rut.util.algorithm.support; }.DE521u  
'DeI]IeP  
import org.rut.util.algorithm.SortUtil; [}ayaXXQ5  
ue8"_N  
/** -w'_Q"o2  
* @author treeroot ctk~}( 1#  
* @since 2006-2-2 uT :Yh6  
* @version 1.0 xa"8"8  
*/ ?Sj >b   
public class ShellSort implements SortUtil.Sort{ :)*+ aS"  
8GN_ 3pT  
/* (non-Javadoc) lq'MLg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (8Ptuh6\\2  
*/ \-`,fat  
public void sort(int[] data) { /8Wfs5N  
for(int i=data.length/2;i>2;i/=2){ u2 a#qU5*  
for(int j=0;j insertSort(data,j,i); V vFMpPi  
} 6< hE]B)  
} 5 *R{N ~>  
insertSort(data,0,1); 6, ~Y(#  
} MrU0Jrk4+  
VY1&YR}Y  
/** ,h<xL-  
* @param data kN~:Bh$  
* @param j #lDW?  
* @param i V9:Jz Q=?`  
*/ -xVp}RLT  
private void insertSort(int[] data, int start, int inc) { {r>iUgg  
int temp; j0wpaIp  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |d)*,O4s  
} :HiAjaA1pg  
} 9\ulS2d  
} 14DHU  
5Q$.q &,  
} T9'd?nw9  
a +$'ULK+r  
快速排序: ]_5qME#N  
" ZYdJHM  
package org.rut.util.algorithm.support; ~NV 8avZ  
*Ei(BrL/;  
import org.rut.util.algorithm.SortUtil; o'?[6B>oj  
m%s&$  
/** h<0&|s*a)  
* @author treeroot 4roqD;5|~|  
* @since 2006-2-2 iwVsq_[]L  
* @version 1.0 FL|\D  
*/ ;Pw\p^wz  
public class QuickSort implements SortUtil.Sort{ $p;<1+!  
:3N&&]  
/* (non-Javadoc) AY x*Ngn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P]^ BE;7T  
*/ }nx5  
public void sort(int[] data) { 1Qk]?R/DN  
quickSort(data,0,data.length-1); \8<ZPqt9  
} H_n Ilku  
private void quickSort(int[] data,int i,int j){ V] 0T P#  
int pivotIndex=(i+j)/2; UTS.o#d  
file://swap nl)l:A+q8  
SortUtil.swap(data,pivotIndex,j); "p@EY|Zv%I  
,j!%,!n o  
int k=partition(data,i-1,j,data[j]); cp_<y)__  
SortUtil.swap(data,k,j); 5._1G| 3  
if((k-i)>1) quickSort(data,i,k-1); $a#-d;  
if((j-k)>1) quickSort(data,k+1,j); uvMc B9  
ZJf:a}=h  
} AW <"3 !@  
/** ZBuh(be  
* @param data [k<.BCE  
* @param i P _x(`H  
* @param j 2 r';)8:  
* @return ;.U<Lr^9#  
*/ {A`J0ol<B9  
private int partition(int[] data, int l, int r,int pivot) { E (.~[-K4  
do{ "$k rK7Z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )&{<gyS1  
SortUtil.swap(data,l,r); YAP,#a  
} HD_ #-M  
while(l SortUtil.swap(data,l,r); $n= w  
return l; Y/<`C  
} (Go1@;5I  
l.Q.G<ol  
} 8= "01  
S Rb-eDk'  
改进后的快速排序: ,^1B"#0{C<  
s1>d)2lX  
package org.rut.util.algorithm.support; "&%Lhyt  
&WKAg:^k)  
import org.rut.util.algorithm.SortUtil; d=C&b]  
Ud& '*,  
/** *!r"+?0gN  
* @author treeroot wx*03(|j;  
* @since 2006-2-2 /<VR-yr  
* @version 1.0  SH6+'7  
*/ 5ktFL<^5T  
public class ImprovedQuickSort implements SortUtil.Sort { JUCp#[q  
&dky_H  
private static int MAX_STACK_SIZE=4096; +~n4</  
private static int THRESHOLD=10; 3lsfT-|Wt&  
/* (non-Javadoc) cH:9@>'$a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qf($F,)K  
*/ 83!{?EPE  
public void sort(int[] data) { - !QVM\t  
int[] stack=new int[MAX_STACK_SIZE]; ;DgQ8"f  
"t)$4gERK  
int top=-1; (91 YHhk{  
int pivot; U1;&G  
int pivotIndex,l,r; z7_h$v  
F*-+5nJ&@  
stack[++top]=0; b6NGhkr'\  
stack[++top]=data.length-1; Y[0mTL4IO  
,4HZ-|EOZ  
while(top>0){ puAjAvIax  
int j=stack[top--]; 1|dXbyUd  
int i=stack[top--]; N c(f+8  
{,B. OM)J  
pivotIndex=(i+j)/2; Wud-(19  
pivot=data[pivotIndex]; ^{Fo,7  
q.kDx_  
SortUtil.swap(data,pivotIndex,j); f=A`{ 8^  
DX_?-jw})f  
file://partition VA5f+c/ %  
l=i-1; 8?hZ5QvA(j  
r=j; _0|@B8!J?  
do{ 4^Og9}bm  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &LYH >  
SortUtil.swap(data,l,r); ~e _  
} W3gHz T?{  
while(l SortUtil.swap(data,l,r); "&C>=  
SortUtil.swap(data,l,j); z&Xk~R*$  
~"VM_Lz]5  
if((l-i)>THRESHOLD){ ue1g(;  
stack[++top]=i; F~sUfqiJ'  
stack[++top]=l-1; f^)iv ]p  
} WD@v<Wx)  
if((j-l)>THRESHOLD){ =Eb$rc)  
stack[++top]=l+1; ws<p BC,m  
stack[++top]=j; .*B@1q  
} E[Q2ZqhgbP  
0Ibe~!EiQJ  
} q"i]&dMr  
file://new InsertSort().sort(data); Rn*@)5  
insertSort(data); z.Vf,<H  
} pQi|PQq  
/** .I0M'L~!/L  
* @param data 3el/,v|qj  
*/ !l5@L\   
private void insertSort(int[] data) { E9\u^"GVO  
int temp; P@5}}vwS  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lnGg1/  
} y3':x[d  
} _jb&=f8  
} ^^g u  
4Uhh]/  
} ,3 [FD9  
t?H sfN  
归并排序: <v!jS=T  
 7LB%7~{<  
package org.rut.util.algorithm.support; jx}7/  
XAN.Plk  
import org.rut.util.algorithm.SortUtil; ZnBGNr  
s"5nfl  
/** 9iV9q]($0  
* @author treeroot gZBb /<  
* @since 2006-2-2 2 sj: &][R  
* @version 1.0 ; xL8W  
*/ nErr&{C  
public class MergeSort implements SortUtil.Sort{ #O{cplh,  
c!GJS`/  
/* (non-Javadoc) p=V1M-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {v"Y!/ [z  
*/ 9g|99Z  
public void sort(int[] data) { e8M0Lz#}  
int[] temp=new int[data.length]; DVt^O [  
mergeSort(data,temp,0,data.length-1); #qARcxbK|  
} _>bk'V7  
TR%8O;  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7m%[$X`  
int mid=(l+r)/2; BMtk/r/  
if(l==r) return ; &dPI<HlM  
mergeSort(data,temp,l,mid); N85ZbmU~  
mergeSort(data,temp,mid+1,r); FNs$k=* 8  
for(int i=l;i<=r;i++){  U02  
temp=data; FOhq&\nkU  
} Gx*B(t]4y  
int i1=l; 3 }3C*w+  
int i2=mid+1; 0+k..l  
for(int cur=l;cur<=r;cur++){ +R7pdi  
if(i1==mid+1) BSL+Gjj~}  
data[cur]=temp[i2++]; =b8u8*ua  
else if(i2>r) B.!&z-)#  
data[cur]=temp[i1++]; T oT('  
else if(temp[i1] data[cur]=temp[i1++]; KAi_+/]K_  
else =sso )/3  
data[cur]=temp[i2++]; R?y_tho4A  
} `dWnu3r;  
} 5LZs_%#  
P @Fx6  
} BC5R$W. e  
q VavP6I  
改进后的归并排序: /([a%,DI  
^M\X/uq$E  
package org.rut.util.algorithm.support; WM%w_,Z  
#xfav19{.  
import org.rut.util.algorithm.SortUtil; $KhD>4^ jL  
RY3=UeoF  
/** &- !$qUli  
* @author treeroot l](!2a=[  
* @since 2006-2-2 Dbb=d8utE  
* @version 1.0 Uw| -d[!  
*/ FAdTp.   
public class ImprovedMergeSort implements SortUtil.Sort { aPRMpY-YC3  
/ U!xh3  
private static final int THRESHOLD = 10; HCx0'|J  
8Zy*#[-  
/* hgbf"J6V8  
* (non-Javadoc) _pzYmQ  
* Igw2n{})w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4TyzD%pOw  
*/ AAqfp/DC  
public void sort(int[] data) { B%`| W@v  
int[] temp=new int[data.length];  FLZ9Rg  
mergeSort(data,temp,0,data.length-1); s:cJF  
} ?2R!n" m-d  
t 1~k+  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,tDLpnB@;  
int i, j, k; pMY7{z  
int mid = (l + r) / 2; DliDBArxZ  
if (l == r) aHb&+/HZ  
return; gvPHB+#A  
if ((mid - l) >= THRESHOLD) S(^YTb7  
mergeSort(data, temp, l, mid); &kn?=NW  
else BS?i!Bm7  
insertSort(data, l, mid - l + 1); 72/ bC  
if ((r - mid) > THRESHOLD) -8vGvI>  
mergeSort(data, temp, mid + 1, r); Y; iI =U  
else ] _W'-B  
insertSort(data, mid + 1, r - mid); B.KK@  
CEBu[TT/9  
for (i = l; i <= mid; i++) { O9m sPb:  
temp = data; zo("v*d*q  
} I[b{*g2Zw  
for (j = 1; j <= r - mid; j++) { F/,6Jh  
temp[r - j + 1] = data[j + mid]; ^6Zx-Mf\  
} wp'[AR}  
int a = temp[l]; lHPnAaue@  
int b = temp[r]; yE.st9m  
for (i = l, j = r, k = l; k <= r; k++) { -[&Z{1A4x4  
if (a < b) { gI9nxy  
data[k] = temp[i++]; 8k)*f+1o  
a = temp; 2 E?]!9T~|  
} else { Y]Z&  
data[k] = temp[j--];  deq5u>  
b = temp[j]; 9P,[MZ  
} JG&E"j#q  
} 0LYf0^P  
} LpI4R  
%%I:L~c  
/** bKsEXS  
* @param data  DZ4gp  
* @param l 9Y2.ob!$}  
* @param i D=Nt 0y  
*/ x>,wmk5)  
private void insertSort(int[] data, int start, int len) { (kyRx+gA  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9G"4w`P  
} &x=_n'  
} _/"e'@z  
} F>^KXq:Z  
} X\w["! B  
cvf?ID84  
堆排序: E{QjmlXQ<  
+]GP"yv-  
package org.rut.util.algorithm.support; q2OF-.rE  
}}u`*&,g  
import org.rut.util.algorithm.SortUtil; <%W&xk  
S,ud pQ7  
/** U>00B|<GJ  
* @author treeroot kGC*\?<LmR  
* @since 2006-2-2 ^CM@VmPp  
* @version 1.0 "=KFag  
*/ 9YB?wh'S[  
public class HeapSort implements SortUtil.Sort{ t-n'I/^5  
c6=XJvz  
/* (non-Javadoc) 3]@wa!`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dd;rne v+  
*/ t;0]d7ey'  
public void sort(int[] data) { N})vrB;1  
MaxHeap h=new MaxHeap(); I 9?X  
h.init(data); \zBZ$5 rE  
for(int i=0;i h.remove(); [Jjo H1E@  
System.arraycopy(h.queue,1,data,0,data.length); Jt0/*^'  
} H6>tto  
U%Hcc k'  
private static class MaxHeap{ nv7)X2jja  
}sJ}c}b  
void init(int[] data){ m(dW["8D  
this.queue=new int[data.length+1]; fZS'e{V  
for(int i=0;i queue[++size]=data; R?,v:S&i7;  
fixUp(size); ew~uOG+  
} >WJQxL4  
} }6 u)wF5  
"vkM*HP  
private int size=0; r+6 DlT a  
69Z`mR  
private int[] queue; 7l09  
?5;wPDsK  
public int get() { ME$J?3r  
return queue[1]; TEGg)\+D>  
} =h?%<2t9<  
G(o6/  
public void remove() { +z#+}'mT%  
SortUtil.swap(queue,1,size--); [#SO}'1n  
fixDown(1); l}T@Cgt  
} beT[7uVj_  
file://fixdown :/Z1$xS  
private void fixDown(int k) { m(1ot M9  
int j; foY]RkW9  
while ((j = k << 1) <= size) { <VQ@I  
if (j < size %26amp;%26amp; queue[j] j++; &oJ[ *pQ  
if (queue[k]>queue[j]) file://不用交换 a@9W'/?igk  
break; |mdf u=  
SortUtil.swap(queue,j,k); Xk:3w,  
k = j; q$s)(D  
} \ f VX<L  
} ^JY:$)4["  
private void fixUp(int k) { /xr75|-8  
while (k > 1) { `#r/L@QI  
int j = k >> 1; x>Dix1b:.  
if (queue[j]>queue[k]) 5p-vSWr !  
break; +# !?+'A  
SortUtil.swap(queue,j,k); c=a;<,Rzb  
k = j; : Q2=t!  
} usu{1&g  
} q[Ey!h)xq  
h Y *^rY'  
} 6Bd:R}yZP7  
Uxe]T  
} }dqOE-"I"n  
C\;%IGn  
SortUtil: }N,v&  B  
=i2]qj\  
package org.rut.util.algorithm; *+2BZ ZwT  
Z^J)]UL/  
import org.rut.util.algorithm.support.BubbleSort; d7x6r3J$  
import org.rut.util.algorithm.support.HeapSort; [iyhrc:@  
import org.rut.util.algorithm.support.ImprovedMergeSort; lQt,(@7]  
import org.rut.util.algorithm.support.ImprovedQuickSort; !:uh? RW  
import org.rut.util.algorithm.support.InsertSort; bGwj` lue  
import org.rut.util.algorithm.support.MergeSort; 31%3&B:Ts  
import org.rut.util.algorithm.support.QuickSort; l Dwq[ I]w  
import org.rut.util.algorithm.support.SelectionSort; f{\[+>  
import org.rut.util.algorithm.support.ShellSort; 8{7'w|/;.{  
]/%CTD(O  
/**  ;Yg/y  
* @author treeroot m1tc="j  
* @since 2006-2-2 dDA&\BuS  
* @version 1.0 &t'P>6)  
*/ @00&J~D  
public class SortUtil { j.V7`x  
public final static int INSERT = 1; +K2HMf'  
public final static int BUBBLE = 2; 7E?60^Tve  
public final static int SELECTION = 3; goD#2lg  
public final static int SHELL = 4; o?3C-A|  
public final static int QUICK = 5; cA]PZ*]{BN  
public final static int IMPROVED_QUICK = 6; 5twG2p8  
public final static int MERGE = 7; QYAt)Ik9q  
public final static int IMPROVED_MERGE = 8;  3L4v@  
public final static int HEAP = 9; U9%^gC  
_?bF;R  
public static void sort(int[] data) { EU Oa8Z  
sort(data, IMPROVED_QUICK); YW8Odm  
} 8)b*q\ O'  
private static String[] name={ )sK _k U{\  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SpEu>9g&  
}; =^zOM6E1ZF  
ZKB27D_vg>  
private static Sort[] impl=new Sort[]{ h<WTN_i}  
new InsertSort(), +<f+kh2L  
new BubbleSort(), Qi9M4Yv  
new SelectionSort(), jq|fI P  
new ShellSort(), JxRn)D  
new QuickSort(), sd*NY  
new ImprovedQuickSort(), :0o]#7  
new MergeSort(), i^4i]+  
new ImprovedMergeSort(), 6HpiG`  
new HeapSort() : D !/.0  
}; <c [X^8   
KJV],6d  
public static String toString(int algorithm){ FuFICF7+C  
return name[algorithm-1]; Rp}Sm,w(  
} 6Q*zZ]kg  
.[6T7fdi  
public static void sort(int[] data, int algorithm) { COH>B1W@  
impl[algorithm-1].sort(data); |4` ;G(ta  
} Eqx|k-<a  
WxtB:7J  
public static interface Sort { WtMDHfwqu\  
public void sort(int[] data); d#I; e  
} 8Urj;KkD  
S;nlC  
public static void swap(int[] data, int i, int j) { ^Uik{x  
int temp = data; C33RXt$X  
data = data[j]; ZM57(D  
data[j] = temp; sHSg _/|  
} 5hlS2fn  
} N_VWA.JHt  
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