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
  • 5829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。 G[OJ <px  
插入排序: la$%%@0/  
Bw[IW[(~!  
package org.rut.util.algorithm.support; c5i7mx:.  
XZ(<Mo\v  
import org.rut.util.algorithm.SortUtil; jr-9KxE  
/** 37M,Os1(  
* @author treeroot SVV-zz]3M  
* @since 2006-2-2 mfDt_Iq  
* @version 1.0 *Id[6Z  
*/ nI+.De~  
public class InsertSort implements SortUtil.Sort{ @|'9nPern  
L` rrT   
/* (non-Javadoc) EgzdRB\Cf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {sq:vu@NC  
*/ 9]/:B8k  
public void sort(int[] data) { s,Fts3+  
int temp; $V/Ke  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L}g#h+GP[  
} wW<u)|>ye  
} uX1{K%^<TW  
} n1'i!NWt  
@XcrHnH9  
} 1h)K3cC  
Hbu :HFJ!  
冒泡排序: ;oVOq$ql  
aouYPxA`  
package org.rut.util.algorithm.support; wg:\$_Og  
v9t'CMU  
import org.rut.util.algorithm.SortUtil; PVmePgF   
"`Xbi/i  
/** YNp-A.o W@  
* @author treeroot V%zo[A  
* @since 2006-2-2 0B~x8f  
* @version 1.0 C}9|e?R[Rz  
*/ N7X(gh2h  
public class BubbleSort implements SortUtil.Sort{ ,hT**(W  
;2sP3!*  
/* (non-Javadoc) {q~N$"#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tejpY  
*/ F hyY+{%  
public void sort(int[] data) { mFd|JbW  
int temp; KyqP@ {  
for(int i=0;i for(int j=data.length-1;j>i;j--){ jz\>VYi(7  
if(data[j] SortUtil.swap(data,j,j-1); 6hXh;-U  
} =<ht@-1  
} 6eNBldP!  
} bp}]'NA  
} N5xI;UV9'  
}C~9 ?Y  
} rvb@4-i>iI  
rK'O 85)eU  
选择排序: ( "<4Ry.u  
Fa#5a'}I  
package org.rut.util.algorithm.support; D>-Pv-f/  
vrvi] Y8  
import org.rut.util.algorithm.SortUtil; a 5w E{K  
kpQN>XV#  
/** dXU6TCjU7  
* @author treeroot ?]TtUoY=)F  
* @since 2006-2-2 r -uu`=,  
* @version 1.0 jHx\YK@e\  
*/ lg^Lk\Y+re  
public class SelectionSort implements SortUtil.Sort { I}]UQ4XJ  
7Q&S [])  
/* 3B$|B,  
* (non-Javadoc) %PK(Z*>  
* J DOs.w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4#ifm#  
*/ eX0 [C0#  
public void sort(int[] data) { <LX-},?P  
int temp; N[yS heT  
for (int i = 0; i < data.length; i++) { Qv8 =CnuOT  
int lowIndex = i; `vf]C'  
for (int j = data.length - 1; j > i; j--) { C2DAsSw  
if (data[j] < data[lowIndex]) { GAh\ 6ul  
lowIndex = j; yv$hIU2X  
} $5Rx>$~+d  
} G^/8^Zi  
SortUtil.swap(data,i,lowIndex); )31xl6@  
} C7&L9k~jf  
} ;iUO1t)^  
Go[anf  
} :n?rk/F  
b~TTz`HZ  
Shell排序: u|Ng>lU  
~cfvL*~5  
package org.rut.util.algorithm.support;  ]l  
SUsdX[byb  
import org.rut.util.algorithm.SortUtil; _0Y?(}  
}0OQm?xh  
/** S*WLb/R2  
* @author treeroot '\"5qB  
* @since 2006-2-2 81)i>]  
* @version 1.0 (>*L-&-  
*/ gaE8\JSr  
public class ShellSort implements SortUtil.Sort{ =}SLQdT  
J@ 8OU  
/* (non-Javadoc) g}*p(Tp9:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pM*( kN  
*/ iN5[x{^t  
public void sort(int[] data) { uME_/S uO  
for(int i=data.length/2;i>2;i/=2){ zN\C  
for(int j=0;j insertSort(data,j,i); KJt6d`ZN  
} +zl [C  
} xb&,9Lxd|  
insertSort(data,0,1); 6ywO L'OBM  
} mdcsL~R  
J{n A ?[  
/** (/!zHq  
* @param data !d95gq<=>  
* @param j @q{.shqo  
* @param i nu[["f~  
*/ g5*?2D}dqX  
private void insertSort(int[] data, int start, int inc) { w)/~Gn676  
int temp; aT BFF  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); NA#,q 8  
} ZRFHs>0  
} 1_M}Dc+J  
} 6 8Vxy  
iY5V4Gbo  
} vxrqUjK7  
Mh}vr%0;)  
快速排序: _93:_L  
zbvV:9N  
package org.rut.util.algorithm.support; In;+wFu;M  
ZCNO_g  
import org.rut.util.algorithm.SortUtil; Na+h+wD.D  
!y$+RA7\  
/** VaO[SW^  
* @author treeroot !;Pp)SRzKG  
* @since 2006-2-2 JX#0<U|L  
* @version 1.0 .(yJ+NU  
*/ bfK4ps}m*  
public class QuickSort implements SortUtil.Sort{ .k|\xR  
va0}?fy.O%  
/* (non-Javadoc) yI%q3lB}^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /.sho\a  
*/ :b;`.`@KL_  
public void sort(int[] data) { zqp>Xw  
quickSort(data,0,data.length-1); EWOa2^%}Z\  
} ZM [Z9/S8  
private void quickSort(int[] data,int i,int j){ ciFqj3JS  
int pivotIndex=(i+j)/2; 0(o.[% Ye  
file://swap }$(\,SzW  
SortUtil.swap(data,pivotIndex,j); Fj"/jdM  
x]t$Zb/Uxa  
int k=partition(data,i-1,j,data[j]); v'r)d-T   
SortUtil.swap(data,k,j); ;f)AM}~^Q  
if((k-i)>1) quickSort(data,i,k-1); c Ze59  
if((j-k)>1) quickSort(data,k+1,j); kX+98?h-C  
aF>&X-2  
} `^h:} V  
/** q*cEosi'F?  
* @param data r^ABu_u(`I  
* @param i T*'WS!z  
* @param j wGx H  
* @return v3<q_J'qT  
*/ ^Ww5@  
private int partition(int[] data, int l, int r,int pivot) { g1Osd7\o  
do{ [c v!YE  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -TS,~`O  
SortUtil.swap(data,l,r); 8fP TxvXqL  
} y>^0q/=]?O  
while(l SortUtil.swap(data,l,r); 2W#^^4^+  
return l; SnM^T(gtS3  
} 4b6)+*[O  
^@Z8 _PZo  
} ^|2m&2  
Gz(l~!n~a  
改进后的快速排序: PM'2zP[*W  
#)O^aac29  
package org.rut.util.algorithm.support; >=.3Vydi1  
Rgl cd  
import org.rut.util.algorithm.SortUtil; {xh5s<uOj  
)mjGHq 2  
/** h67{qY[J[  
* @author treeroot n+nZ;GJ5d  
* @since 2006-2-2 iU(B#ohW"  
* @version 1.0 @ 'U`a4  
*/ <-,y0Y'  
public class ImprovedQuickSort implements SortUtil.Sort { '~1Zr uO  
&2I8!Ia  
private static int MAX_STACK_SIZE=4096; F@zTz54t  
private static int THRESHOLD=10; Oz)/KZ  
/* (non-Javadoc) 6;;2e> e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :39arq  
*/ d ,.=9  
public void sort(int[] data) { ]EG8+K6  
int[] stack=new int[MAX_STACK_SIZE]; A8Km8"  
SwM=?<  
int top=-1; XWq"_$&LF  
int pivot; %P:|B:\<  
int pivotIndex,l,r; [6Sk>j  
vG\ b `  
stack[++top]=0; s_e*jM1  
stack[++top]=data.length-1; m c{W\H  
[8%q@6[  
while(top>0){ ,Z}ST|$u  
int j=stack[top--]; RL fQT_V  
int i=stack[top--]; m;L 3c(r.  
X-J85b_e  
pivotIndex=(i+j)/2; *kcc]*6@s  
pivot=data[pivotIndex]; 14*6+~38m&  
=&(e*u_  
SortUtil.swap(data,pivotIndex,j); y,w_x,m  
&>QxL d#  
file://partition )<qL8#["U  
l=i-1; ( GoPXh  
r=j; }}k*i0  
do{ rmr :G  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wSPmiJ/!  
SortUtil.swap(data,l,r); i'\-Y]?[  
} f.uy;v  
while(l SortUtil.swap(data,l,r); O\)Kg2  
SortUtil.swap(data,l,j); 9vSKIq  
/XU=l0u  
if((l-i)>THRESHOLD){ S(CVkCP  
stack[++top]=i; 'f CSP|  
stack[++top]=l-1; LXPO@2QF  
} 16 \)C/*  
if((j-l)>THRESHOLD){ Q>cEG"  
stack[++top]=l+1; *xY3F8  
stack[++top]=j; -  eIo  
} p1 ("  
{-f%g-@L6|  
} gQJLqs"F  
file://new InsertSort().sort(data); bbDm6,  
insertSort(data); oK$Krrs0&  
} {3kz\FS  
/** kk4+>mk  
* @param data zQ<;3+*  
*/ 5(E&jKn&  
private void insertSort(int[] data) { 4jZB%tH  
int temp; 4^ U%` 1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c]bG5  
} $Sa7N%D  
} OhlK;hvdB*  
} {TdxsE>  
;%^{Zybh  
} !hHX8TD^J  
_*b`;{3  
归并排序: jicH94#(]  
.GL@`7"  
package org.rut.util.algorithm.support; S ?J(VJqE  
`"<hO 'WU  
import org.rut.util.algorithm.SortUtil; T<NOL fk66  
#f/4%|t:  
/** 99CK [G  
* @author treeroot [IAk9B.\  
* @since 2006-2-2 b;#_?2c  
* @version 1.0 y` '#gH  
*/ lyyf&?2  
public class MergeSort implements SortUtil.Sort{ foL4s;2  
qywl G  
/* (non-Javadoc) -Dy<B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OE Xa}K#  
*/ rm$dv%q  
public void sort(int[] data) { 8eYEi  
int[] temp=new int[data.length]; =tP^vgfQ  
mergeSort(data,temp,0,data.length-1);  + #E?)  
} /e*fsQ>M:  
#y[omla8  
private void mergeSort(int[] data,int[] temp,int l,int r){ g j]8/~lr  
int mid=(l+r)/2; 5\w*W6y  
if(l==r) return ; 67Qu<9}<-  
mergeSort(data,temp,l,mid); 78~/1-  
mergeSort(data,temp,mid+1,r); m^3j|'mG  
for(int i=l;i<=r;i++){ 11kyrv  
temp=data; jb{9W7;RL  
} *'aouS/?<6  
int i1=l; 5 6.JB BZZ  
int i2=mid+1; P1B=fgT  
for(int cur=l;cur<=r;cur++){ -$I30.#  
if(i1==mid+1) <r`;$K  
data[cur]=temp[i2++]; X(rXRP#  
else if(i2>r) PAtv#)h  
data[cur]=temp[i1++]; 9F?-zn;2s  
else if(temp[i1] data[cur]=temp[i1++]; :@ VCKq!  
else ,S(s  
data[cur]=temp[i2++]; 5MD'AP:  
} 5?? }9  
} ysl#Rwt/2  
yWE\)]9  
} D .LR-Z  
[@8po-()L  
改进后的归并排序: kWy@wPqms  
MPy>< J  
package org.rut.util.algorithm.support; `Syfl^9B  
1 A0BM  
import org.rut.util.algorithm.SortUtil; ~J> ;l s1  
BHYguS^qz  
/** }Nwp{["}]L  
* @author treeroot %7w8M{I R3  
* @since 2006-2-2 yjH'<  
* @version 1.0 0Q?%B6g$m[  
*/ jYFmL_{  
public class ImprovedMergeSort implements SortUtil.Sort { t u{~:Z(  
#s15AyKz5  
private static final int THRESHOLD = 10; 3 H5  
_)!*,\*`{  
/* ?Tu=-ppw  
* (non-Javadoc) N-knhA  
* e84%Y8,0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0GeL">v,:=  
*/ NA'45}fQ  
public void sort(int[] data) { A#19&}  
int[] temp=new int[data.length]; jw {B8<@s  
mergeSort(data,temp,0,data.length-1); ->.9[|lIg  
} ",Vx.LV  
e*PUs  
private void mergeSort(int[] data, int[] temp, int l, int r) { T]tu#h{ a  
int i, j, k; JMo r[*  
int mid = (l + r) / 2; (w5cp!qW9J  
if (l == r) "kBVHy  
return; ID! S}D  
if ((mid - l) >= THRESHOLD) <)T~_s  
mergeSort(data, temp, l, mid); _@[W[= |H  
else 6 R})KIG  
insertSort(data, l, mid - l + 1); jgG9?w)|u  
if ((r - mid) > THRESHOLD) GiEt;8  
mergeSort(data, temp, mid + 1, r); As,e.V5!  
else Ut;4`>T  
insertSort(data, mid + 1, r - mid); |UMm>.\'  
t8h*SHD9  
for (i = l; i <= mid; i++) { -T{2R:\{  
temp = data; B@i%B+qCLv  
} "-dA\,G  
for (j = 1; j <= r - mid; j++) { q>>1?hzA  
temp[r - j + 1] = data[j + mid]; cc_'Kv!  
} ~LV]cX2J(  
int a = temp[l]; >dm9 YfQ  
int b = temp[r]; Q1x&Zm1v  
for (i = l, j = r, k = l; k <= r; k++) { Lw_|o[I}  
if (a < b) { Wkjp:`(-$r  
data[k] = temp[i++]; .Wy'  
a = temp; PuGs%{$(h  
} else { f+n {9Hz  
data[k] = temp[j--]; ~wv$uL8y  
b = temp[j]; E?P>s T3B  
} 5V =mj+X?  
} r~ f;g9I  
} V@-Q&K#  
xsJXf @  
/** 6vE#$(n#a&  
* @param data DwGM+)!  
* @param l ;R#RdUFH  
* @param i 6o3#<ap<  
*/ RO/(Ldh  
private void insertSort(int[] data, int start, int len) { B>!mD{N  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); JW^ ${4  
} 7g+T  
} oe 6-F)+  
} QkD ~  
} 0!0e$!8l  
7kE+9HmfMk  
堆排序: S\A0gOL^  
xRXvTNEg  
package org.rut.util.algorithm.support; m[3c,Axl7  
83/m^^F{]  
import org.rut.util.algorithm.SortUtil; d<Q%h?E  
]3f[v:JQ  
/** &;P\e  
* @author treeroot u^{p' a'  
* @since 2006-2-2 js <Up/1  
* @version 1.0 @_-,Q5  
*/ -k8sR1(  
public class HeapSort implements SortUtil.Sort{ =d^hiR!GN  
W&|?8%"l]  
/* (non-Javadoc) o^UOkxs.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4aBVO%t  
*/ ppvlU H5;  
public void sort(int[] data) { !8[A;+o3P  
MaxHeap h=new MaxHeap(); }s<;YC  
h.init(data); i.)n#@M2  
for(int i=0;i h.remove(); !<=zFy[J.9  
System.arraycopy(h.queue,1,data,0,data.length); n(eo_.W2|  
} 5!qf{4j  
pY )x&uM!  
private static class MaxHeap{ z`E=V  
K2xHXziQ  
void init(int[] data){ : q%1Vi  
this.queue=new int[data.length+1]; tNzO1BK  
for(int i=0;i queue[++size]=data; HB5-B XBU  
fixUp(size); * BR#^Wt  
} %~Rg`+  
} FP=- jf/  
,;w~ VZ4  
private int size=0; Y]0c%Fd  
g*YA~J@  
private int[] queue; u$[8Zmgzz  
59l9_yFJ  
public int get() { v :/!OvLe  
return queue[1]; X coPkW  
} Q> y!  
_1G/qHf^S  
public void remove() { &k}B66  
SortUtil.swap(queue,1,size--); >(igVaZ>  
fixDown(1); q 9xA.*  
} ^#Q-?O  
file://fixdown V^[&4  
private void fixDown(int k) { (W:@v&p  
int j; $RYGAh  
while ((j = k << 1) <= size) { P* 0kz@  
if (j < size %26amp;%26amp; queue[j] j++; L f"!:]  
if (queue[k]>queue[j]) file://不用交换 [y'blCb  
break; N'EZJ oH  
SortUtil.swap(queue,j,k); U-1UWq  
k = j; !fn%Q'S  
} +39uKOrZ  
} zM&ro,W  
private void fixUp(int k) { :AztHf?X  
while (k > 1) { rY^uOrR>j*  
int j = k >> 1; w$f_z*/  
if (queue[j]>queue[k]) HSG Ln906  
break; H6 x  
SortUtil.swap(queue,j,k); T&pCLvkz  
k = j; W)Y`8&,  
} aXVldt'  
} WcKDerc  
qX-5/;n  
} Ah7"qv'L\  
~//9Nz~;3  
} l%GArH`  
~$T>,^K y  
SortUtil: aQx6;PC  
-%fj-Y7y  
package org.rut.util.algorithm; ]ASw%Lw)  
zMP6hn  
import org.rut.util.algorithm.support.BubbleSort; W1"NKg~4  
import org.rut.util.algorithm.support.HeapSort; ff.k1%wr^  
import org.rut.util.algorithm.support.ImprovedMergeSort; er3~gm  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^lV}![do!  
import org.rut.util.algorithm.support.InsertSort; V>)/z|[  
import org.rut.util.algorithm.support.MergeSort; MSM8wYcD  
import org.rut.util.algorithm.support.QuickSort; B;=Z^$%T  
import org.rut.util.algorithm.support.SelectionSort; }a5TY("d9H  
import org.rut.util.algorithm.support.ShellSort; *'8q?R?7g  
dNt^lx  
/** vkGF_aenk  
* @author treeroot |wuTw|  
* @since 2006-2-2 A)n_ST0  
* @version 1.0 LZ_VLW9w E  
*/ ,S`n?.&& 7  
public class SortUtil { 5O]tkHYR  
public final static int INSERT = 1; p )JR5z  
public final static int BUBBLE = 2; |Sjy   
public final static int SELECTION = 3; SQK82 /  
public final static int SHELL = 4; 8ly)G  
public final static int QUICK = 5; K(u pz n*a  
public final static int IMPROVED_QUICK = 6; us|Hb  
public final static int MERGE = 7; 1DcBF@3sWG  
public final static int IMPROVED_MERGE = 8; >^g2 Tg:  
public final static int HEAP = 9; QEt"T7a[/  
(jU_lsG  
public static void sort(int[] data) { UwS7B~  
sort(data, IMPROVED_QUICK); )GG9[%H!  
} xgIb6<qwY  
private static String[] name={ aIa<,  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =L#&`s@)_  
}; tP! %(+V  
5Q8 H8!^  
private static Sort[] impl=new Sort[]{ +fboTsp% H  
new InsertSort(), M}11 tUl  
new BubbleSort(), |A*4Fuc&  
new SelectionSort(), 7=?!B#hm !  
new ShellSort(), G5U?]& I8  
new QuickSort(), qtAt=` s  
new ImprovedQuickSort(), --l UEo~  
new MergeSort(), vJ&D>Vh4e  
new ImprovedMergeSort(), ^\B4]'+^j  
new HeapSort() G9okl9;od  
}; c;q=$MO`  
(,o@/ -o  
public static String toString(int algorithm){ l([aKm#  
return name[algorithm-1]; D )`(b  
} &\6},JN  
-( p%+`  
public static void sort(int[] data, int algorithm) { gkxHfm  
impl[algorithm-1].sort(data); *l =f=  
} \f4rA?+f  
4bL *7bA  
public static interface Sort { *\'t$se+  
public void sort(int[] data); T$u'+* Xx  
} 9rz$c, Y(  
'q:7PkN!p  
public static void swap(int[] data, int i, int j) { LRu*%3xx  
int temp = data; /YZMP'v  
data = data[j]; ;[ Dxk$"  
data[j] = temp; iQ Xlz] '  
} Yn [ F:Z  
} {c3FJ5:  
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