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
  • 7135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。 *UL++/f  
插入排序: xAJ N(8?  
9~3;upWu!  
package org.rut.util.algorithm.support; E%Tpby}^'  
4-j3&(  
import org.rut.util.algorithm.SortUtil; 24{Tl q3  
/** T($d3Nn1  
* @author treeroot uBpnfIe  
* @since 2006-2-2 V9KI?}q:W  
* @version 1.0 5PF?Eq   
*/ 0 PdeK'7  
public class InsertSort implements SortUtil.Sort{ 80J87\)  
S7oPdzcU-  
/* (non-Javadoc) }-`N^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %vF,wQC  
*/ l-^2>K[  
public void sort(int[] data) { s"OP[YEke/  
int temp; gR5 EK$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jGm`Qg{<  
} ky4 ;7RK  
} HKB?G~  
} q|7i6jq\*R  
P"-*'q,9  
} ~l {*XM  
AS1#_f C  
冒泡排序: GK6/S_l%D+  
{*yFTP"93  
package org.rut.util.algorithm.support; VrQgn9L  
FZFYwU\~.L  
import org.rut.util.algorithm.SortUtil; 8-#_xsZ^;  
F#b^l}  
/** $G\WW@*GE  
* @author treeroot nm#ISueh  
* @since 2006-2-2 y  J|/^qs  
* @version 1.0 x."R_>  
*/ {beu  
public class BubbleSort implements SortUtil.Sort{ ?.{SYaS  
90"&KDh  
/* (non-Javadoc) >b;o&E`\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4*0C_F@RX  
*/ 7Gh+EJJ3I  
public void sort(int[] data) { K UD.hK.  
int temp; ,|}}Ml  
for(int i=0;i for(int j=data.length-1;j>i;j--){ yN@3uYBF  
if(data[j] SortUtil.swap(data,j,j-1); C4[)yJ  
} c/6  
} X&LaAqlSG  
} <6.aSOS  
} 7y?aw`Sw:  
|lDxk[  
} oMNt676  
!k3 eUBF  
选择排序: CE5A^,EsB  
&u`]Zn   
package org.rut.util.algorithm.support; $.+_f,tU  
kuq&8f~!  
import org.rut.util.algorithm.SortUtil; 42oW]b%P{;  
B}(r>8?dm  
/** ~:JoKm`vU  
* @author treeroot ?<;9=l\Q  
* @since 2006-2-2 QjlQsN!  
* @version 1.0 olv0w ;s  
*/ @k-C>h()C  
public class SelectionSort implements SortUtil.Sort { 2RbK##`vC  
WrHY'  
/* AAXlBY6Y-  
* (non-Javadoc) fzdWM:g  
* eIDrN%3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 11^.oa+`  
*/ IRknD3LX  
public void sort(int[] data) { u~xfI[8C  
int temp; 88&M8T'AP  
for (int i = 0; i < data.length; i++) { ]qd$rX   
int lowIndex = i; &wa2MNCG8  
for (int j = data.length - 1; j > i; j--) { c 8t  
if (data[j] < data[lowIndex]) { Y&uwi:_g  
lowIndex = j; P @Jo[J<  
} %O|+` "  
} 0SV<Pl^  
SortUtil.swap(data,i,lowIndex); ^7Rc\   
} 3<x1s2U  
} $2E&~W %  
B"Ma<"HU  
} ey]WoUZ  
M!wa }  
Shell排序: @B`nM#X#  
.fgVzDR|+  
package org.rut.util.algorithm.support; >~;= j~  
r!<)CT}D  
import org.rut.util.algorithm.SortUtil; diWi0@  
 ID]E3K  
/** vbh 5  
* @author treeroot OQ&'3hv{  
* @since 2006-2-2 Kh8  
* @version 1.0 @tIY%;Bgk  
*/ ^)E# c  
public class ShellSort implements SortUtil.Sort{ HfPu~P  
%<O0Yenu  
/* (non-Javadoc) JKz]fgOd$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M <nH  
*/ 50CjH"3PZ`  
public void sort(int[] data) { 6b1AIs8  
for(int i=data.length/2;i>2;i/=2){ RsW4 '5  
for(int j=0;j insertSort(data,j,i); Y 8n*o3jM  
} 9i46u20  
} @~QI3)=s  
insertSort(data,0,1); ?j;,:n   
} 5m yQBKE  
Q_)$Ha{>H,  
/** r>ag( ^J\  
* @param data D0}r4eA  
* @param j kQ`p\}7_  
* @param i _+9o'<#u(  
*/ >} E  
private void insertSort(int[] data, int start, int inc) { Ys0N+  
int temp; n5 2Q-6H  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #OlPnP2  
} +O)Y7k{?C5  
} gW-mXb  
} W)<t7q+  
mpNS}n6  
} ?_7iL?  
|va^lT  
快速排序: 7Bym?  
1+#E|YWJ  
package org.rut.util.algorithm.support; 5.LfN{gE)  
+1]A$|qyW  
import org.rut.util.algorithm.SortUtil; f28bBuv1?  
+!K*FU=).  
/** u}.mJDL  
* @author treeroot d2?#&d'aq  
* @since 2006-2-2 xE rAs}|  
* @version 1.0 YrsE 88QqI  
*/ Pj1k?7  
public class QuickSort implements SortUtil.Sort{ F_Gc_eT  
P]O=K  
/* (non-Javadoc) )x<BeD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `B~zB=}  
*/ Ig<# {V  
public void sort(int[] data) { g`w46X  
quickSort(data,0,data.length-1); iwy;9x  
} B- D&1gO  
private void quickSort(int[] data,int i,int j){ Oye6IT"  
int pivotIndex=(i+j)/2; $)eS Gslz  
file://swap 3lTnfc&  
SortUtil.swap(data,pivotIndex,j); -\7_^8 am  
4t-l@zFWb  
int k=partition(data,i-1,j,data[j]); [V_+/[AA)  
SortUtil.swap(data,k,j); Q-7L,2TL  
if((k-i)>1) quickSort(data,i,k-1); 26;Gt8  
if((j-k)>1) quickSort(data,k+1,j); {rwT4]4  
"d`u#YmR  
} 7&dK_x,a  
/** (^"2"[?a  
* @param data (((|vI3 <  
* @param i y'!"GrbZ  
* @param j uvAJJIae'  
* @return ^zW=s$\Fo  
*/ =Qf{  
private int partition(int[] data, int l, int r,int pivot) {  \EXa 9X2  
do{ ~)VI` 36X  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); V%B~ q`4  
SortUtil.swap(data,l,r); -Iis/Xw:  
} xf{ZwS%X  
while(l SortUtil.swap(data,l,r); CEVisKcE:  
return l; 4hxa|f  
} iuA_ Jr  
v o4U%  
} K $WMrp  
oQ A,57B  
改进后的快速排序: m Ga:~x  
ExM VGe  
package org.rut.util.algorithm.support; &;sW4jnt  
~6K.5t7  
import org.rut.util.algorithm.SortUtil; E $P?%<o  
]V)*WP#a  
/** #q>\6} )  
* @author treeroot eL<jA9cJ9  
* @since 2006-2-2 ]57yorc`  
* @version 1.0 p: )=i"uL  
*/ S503b*pM  
public class ImprovedQuickSort implements SortUtil.Sort { da i+"  
yzMGZi`ut  
private static int MAX_STACK_SIZE=4096; i{16&4 '  
private static int THRESHOLD=10; UmArl)R/  
/* (non-Javadoc) Cg|\UKfy$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LIrebz  
*/ =kf"%vFV  
public void sort(int[] data) { |MOz> 1<a  
int[] stack=new int[MAX_STACK_SIZE]; \._|_+HiW  
DN iH" 0%  
int top=-1; $ U7#3-'  
int pivot; nEPTTp+B  
int pivotIndex,l,r; M ziOpraj  
f-634KuP  
stack[++top]=0; &E1m{gB(  
stack[++top]=data.length-1; Y;'SD{On  
/\;m/cwrl"  
while(top>0){ MMUlA$*t  
int j=stack[top--]; l|{[vZpT  
int i=stack[top--]; B[q"o I`  
@qYT/V*/  
pivotIndex=(i+j)/2; a6Joa&`dv  
pivot=data[pivotIndex]; )\j dF-s  
!!ma]pB,  
SortUtil.swap(data,pivotIndex,j); *H i}FI  
0OQ*V~>f  
file://partition 2% /Kf}+  
l=i-1; 6`vW4]zu  
r=j; pp@B]We  
do{ rLE+t(x(0  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ##} 7cFX  
SortUtil.swap(data,l,r); G')zDx  
} 1/~=61msc  
while(l SortUtil.swap(data,l,r); (,tu7u{  
SortUtil.swap(data,l,j); aj,o<J  
3<xDxj 0<  
if((l-i)>THRESHOLD){ >x3lA0m  
stack[++top]=i; oH!O{pQK}  
stack[++top]=l-1; ,QpFVlPU  
} gWoUE7.3`  
if((j-l)>THRESHOLD){ ~ rQ,%dH  
stack[++top]=l+1; ?Pa(e)8\  
stack[++top]=j; u>G9r#~`k  
} 'n ^,lXWB  
=*I|z+  
} 8 ]exsn Z  
file://new InsertSort().sort(data); ,Si{]y  
insertSort(data); Z1:%Aq xP  
} .Zj`_5C  
/** {y a .  
* @param data pkae91  
*/ ji ./m8(  
private void insertSort(int[] data) { G~v:@  
int temp; ~;a \S3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \gB ~0@[\7  
} #r]Z2Y]  
} .)_2AoT7[  
} ~#jiX6<I  
7Xu#|k  
} xb<|m2<)H  
1DhC,)+D}q  
归并排序: d6 ef)mw  
vV*J;%MO  
package org.rut.util.algorithm.support; fU?#^Lg  
lgS7;  
import org.rut.util.algorithm.SortUtil; \/?J)k3H.  
=4co$oD}  
/** |/^S%t6*  
* @author treeroot gBi3^GxjM?  
* @since 2006-2-2 9Li*L&B)  
* @version 1.0 =>B"j`oR  
*/ w$AR  
public class MergeSort implements SortUtil.Sort{ xO Aq!,|V  
mO]>]   
/* (non-Javadoc) ZJQFn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1}c'UEr%)  
*/ QnD8L.Dg  
public void sort(int[] data) { iB"ji4[z  
int[] temp=new int[data.length]; abm 3q!a-  
mergeSort(data,temp,0,data.length-1); Um 6}h@>  
} lZ.lf.{F  
TH'8^wf  
private void mergeSort(int[] data,int[] temp,int l,int r){ [A/2 Ms  
int mid=(l+r)/2; X-_VuM_p  
if(l==r) return ; l>b'b e9  
mergeSort(data,temp,l,mid); /\b* oPWJ  
mergeSort(data,temp,mid+1,r); *jbPy?%oY  
for(int i=l;i<=r;i++){ !5C"`@}q>  
temp=data; 2dkWzx  
} aEvbGo  
int i1=l; )LIn1o_,  
int i2=mid+1;  +:-xV  
for(int cur=l;cur<=r;cur++){ )J> dGIb  
if(i1==mid+1) $/D?Vw:]  
data[cur]=temp[i2++]; NytTyk)  
else if(i2>r) ^@O 7d1&y  
data[cur]=temp[i1++]; )!\6 "{  
else if(temp[i1] data[cur]=temp[i1++]; Xi) ;dcNJ  
else rMi\#[o B  
data[cur]=temp[i2++]; GRbbU#/=G  
} "q+Z*   
} Qd kus 214  
QfAmGDaYQ  
} tEvDAI} 5  
7~XA92  
改进后的归并排序: T+&fUhSy  
t_w\k_ T  
package org.rut.util.algorithm.support; [B+F}Q^;  
6>rz=yAM_  
import org.rut.util.algorithm.SortUtil; A1-,b.Ni  
\ *[Ht!y  
/** P.@dB.Ny  
* @author treeroot 7Tdx*1 U  
* @since 2006-2-2 ?x&}ammid  
* @version 1.0 #f24a?n|  
*/ 5l1R")0`t_  
public class ImprovedMergeSort implements SortUtil.Sort { K+!e1 '  
bUm%#a  
private static final int THRESHOLD = 10; jaodcT0  
IRx% L?  
/* 7$Z_'GJ]1C  
* (non-Javadoc) 5(J?C-Pk  
* D^6iQW+.P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,o%by5j"^N  
*/ V~j^   
public void sort(int[] data) { sV,Yz3E<u$  
int[] temp=new int[data.length]; 1L4-;HYJm  
mergeSort(data,temp,0,data.length-1); aYT!xdCI  
} ~LpkA`Hn!  
p03I&d@w>  
private void mergeSort(int[] data, int[] temp, int l, int r) { ;Y;r%DJ  
int i, j, k; LX7P?j  
int mid = (l + r) / 2; |~ fI=1;;x  
if (l == r) t e-xhJ&K  
return; +] ;WN  
if ((mid - l) >= THRESHOLD) 6`Tx meIP  
mergeSort(data, temp, l, mid); FsJk"$}  
else 3`%E;?2  
insertSort(data, l, mid - l + 1); n4S`k%CI  
if ((r - mid) > THRESHOLD) xw}yl4WT{  
mergeSort(data, temp, mid + 1, r); .Ji9j[[#D  
else h>D;QY  
insertSort(data, mid + 1, r - mid); trwQ@7  
EA>.SSs!  
for (i = l; i <= mid; i++) { #0b:5.vy  
temp = data; X/2GTU7?  
} 8Lx/ZGy  
for (j = 1; j <= r - mid; j++) { VfpT5W<  
temp[r - j + 1] = data[j + mid]; B._YT   
} r/'!#7dLG-  
int a = temp[l]; |{kbc0*  
int b = temp[r]; lr~ |=}^  
for (i = l, j = r, k = l; k <= r; k++) { ial{A6X  
if (a < b) { 4x[_lsj   
data[k] = temp[i++]; rIcgf1v70  
a = temp; yjL+1_"B  
} else { ~:7y!=8#  
data[k] = temp[j--]; R)JH D7 1  
b = temp[j]; ub~ t}  
} ^.8~}TT-U  
} z~vcwiYAP  
} GWuKDq  
G)I` M4}*n  
/** nL=+`aq_  
* @param data Yft [)id  
* @param l C}mhnU@  
* @param i ,H+Y1N4W(  
*/ U[x$QG6m!  
private void insertSort(int[] data, int start, int len) { F ><_gIT  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); mN]WjfII  
} ;UTM9.o[  
} Q&r. wV|  
} -fFtHw:kHh  
} C_Q3^mLx  
A_S7z*T  
堆排序: JH]S'5X8K  
07:V[@'  
package org.rut.util.algorithm.support; ~M^[  
L5x;# \#p  
import org.rut.util.algorithm.SortUtil; WyatHC   
?K7uy5Y  
/** r6uN6XCM  
* @author treeroot "NA<^2W@J  
* @since 2006-2-2 XyN " Jr  
* @version 1.0 $+GDPYm'  
*/ u*2?Gky  
public class HeapSort implements SortUtil.Sort{ *w4#D:g  
S:j{R^$k  
/* (non-Javadoc) %P s.r{%{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vq]ixag2^  
*/ i;9X_?QF  
public void sort(int[] data) { 2_HIn  
MaxHeap h=new MaxHeap(); Qf^c}!I  
h.init(data); ; &6 {c  
for(int i=0;i h.remove(); yZNG>1 N  
System.arraycopy(h.queue,1,data,0,data.length); BZQ}c<Nl  
} o FP8s[B  
ugTsI~aE  
private static class MaxHeap{ E5rV}>(Y  
fV>d_6Lf}  
void init(int[] data){ YT+b{   
this.queue=new int[data.length+1]; a_P|KRl  
for(int i=0;i queue[++size]=data; >"!ScYn  
fixUp(size); 0}e?hbF%U  
} @!dIa1Q"  
}  *1["x;A  
$?W2'Xm!V  
private int size=0; q}L`8(a  
?lD)J?j  
private int[] queue; ;&CLb`<y  
./XX  
public int get() { SZe55mK`  
return queue[1]; ;@qS#7SRB  
} >Vt2@Ee  
rz_W]/G-P  
public void remove() { *t| !xO  
SortUtil.swap(queue,1,size--); gC2}?nq*  
fixDown(1); 3E;@.jD  
} KHZ[drb6$  
file://fixdown d]s^?=gM  
private void fixDown(int k) { asYk #;z\"  
int j; ~;CNWJtcf(  
while ((j = k << 1) <= size) { \ZADY.ha  
if (j < size %26amp;%26amp; queue[j] j++; q&z'S  
if (queue[k]>queue[j]) file://不用交换 oB5\^V$  
break; >R]M:Wx  
SortUtil.swap(queue,j,k); V4jMx[   
k = j;  cX C[O  
} GgY8\>u  
} #fa,}aj  
private void fixUp(int k) { ;GG,Z#\m  
while (k > 1) { c|.te]!ds  
int j = k >> 1; rmA?Xlh\  
if (queue[j]>queue[k]) d*{Cv2A.  
break; <!RkkU& 6  
SortUtil.swap(queue,j,k); 34!.5^T  
k = j; KX9IC 5pR  
} 7mYcO3{5{  
} +^(_S9CO  
RD[P|4eY  
} J.h` 0$!  
/gF)msUF  
} ^OQP;5 #K  
2LUsqL\m}.  
SortUtil: N2s"$Ttq  
}UsH#!9.  
package org.rut.util.algorithm; %pq.fZ I   
G?$o+Y'F  
import org.rut.util.algorithm.support.BubbleSort; ^L $`)Ja  
import org.rut.util.algorithm.support.HeapSort; VnW6$W?g  
import org.rut.util.algorithm.support.ImprovedMergeSort; bdstxjJ`  
import org.rut.util.algorithm.support.ImprovedQuickSort; :5/Ue,~ag  
import org.rut.util.algorithm.support.InsertSort; EF:ec9 .  
import org.rut.util.algorithm.support.MergeSort; d lfjx  
import org.rut.util.algorithm.support.QuickSort; 5&Yt=)c\  
import org.rut.util.algorithm.support.SelectionSort; zs]ubJC@  
import org.rut.util.algorithm.support.ShellSort; C8|Ls(4Ck  
+ GQ{{B  
/** $,by!w'e:l  
* @author treeroot D%o(HS\E  
* @since 2006-2-2 x+4K,r;  
* @version 1.0 |x1OWm1:<  
*/ t'eu>a1D  
public class SortUtil { *O'|NQhNx>  
public final static int INSERT = 1; b>p_w%d[[J  
public final static int BUBBLE = 2; -y!Dg6 A  
public final static int SELECTION = 3; :'Gn?dv|  
public final static int SHELL = 4; <jJ'T?,  
public final static int QUICK = 5; 05ClPT\BCr  
public final static int IMPROVED_QUICK = 6; `Z,WKus  
public final static int MERGE = 7; ek<B=F  
public final static int IMPROVED_MERGE = 8; 9*I[q[>9  
public final static int HEAP = 9; =JE<oVP8  
wicsf<]  
public static void sort(int[] data) { #Q7:Mu+  
sort(data, IMPROVED_QUICK); L^t%p1R  
}  DlCN  
private static String[] name={ Wo&22,EB  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" LAk .f  
}; "W6cQsi  
?9{^gW4|  
private static Sort[] impl=new Sort[]{ el5Pe{j '  
new InsertSort(), ^V;r  
new BubbleSort(), %!Eh9C*  
new SelectionSort(), d)uuA;n  
new ShellSort(), ZVH 9je  
new QuickSort(), )x\%*ewY  
new ImprovedQuickSort(), >4wigc  
new MergeSort(), iWjNK"W  
new ImprovedMergeSort(), 'Iw`+=iVz  
new HeapSort() p]S'pzh  
}; Y<W9LF  
iSf%N>y'K  
public static String toString(int algorithm){ \m)s"Sh.  
return name[algorithm-1]; k0j4P^d  
} Fu{VO~w  
geK;r0(f  
public static void sort(int[] data, int algorithm) { !%R):^R8  
impl[algorithm-1].sort(data); Ld_uMe?Z  
} LI}e_= E  
)2y [#Blo  
public static interface Sort { ! U@ETo  
public void sort(int[] data); X HJdynt/  
} gKTCfD~  
e}2?)B`[  
public static void swap(int[] data, int i, int j) { A7Y CSjB  
int temp = data; {91Y;p C  
data = data[j]; <#BK(W~$  
data[j] = temp; y]{b4e  
} ?yAb=zI1b  
} e:-pqZT`  
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
如果您提交过一次失败了,可以用”恢复数据”来恢复帖子内容
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八