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
  • 7025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。 H%;pPkIi  
插入排序: n +dRAIqB  
^9XAWj"  
package org.rut.util.algorithm.support; Hnf?`j>  
aZCxyoh+  
import org.rut.util.algorithm.SortUtil; 8KWhXF  
/** 0$|wj^?U  
* @author treeroot gXB&Sgjo  
* @since 2006-2-2 x5,|kJ9S  
* @version 1.0 hroRDD   
*/ e)oi3d.wJf  
public class InsertSort implements SortUtil.Sort{ 2>im'x 5  
EC?U#!kv  
/* (non-Javadoc) A&_v:z4y/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kp*BAQ  
*/ :U-yO 9!j  
public void sort(int[] data) { ~AR0 ,lak  
int temp; g$mqAz<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); BF U#FE)s  
} <"`P;,S  
} kaVYe)~  
} tfjbG;R  
@4jPaqa(  
} AmcBu"  
PAu/iqCH  
冒泡排序: Xa[lX8$zL  
6/Z 8/PL  
package org.rut.util.algorithm.support; s=n_(}{ q  
2^&5D,}0  
import org.rut.util.algorithm.SortUtil; ;T WYO  
RueL~$*6.~  
/** ;sd] IZ$#  
* @author treeroot e{d$OzT) V  
* @since 2006-2-2 zuvP\Y=V`  
* @version 1.0 @m"P_1`*  
*/ sUsIu,1Q  
public class BubbleSort implements SortUtil.Sort{ XPcx"zv\  
a4N8zDS  
/* (non-Javadoc) I^S{V^Ty  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6}PoBhgSg-  
*/ ,YmTx  
public void sort(int[] data) { 1iE*-K%Q  
int temp; ">S.~'ds  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ) 2Hl\"F  
if(data[j] SortUtil.swap(data,j,j-1); V$ac}A,!  
} F6)/Iiv  
} Y--Uo|H  
} BmFs6{>~c  
} >HQ<KFA  
z>W'Ra6  
} 0G/_"} @  
JKs&!!  
选择排序: !,>9?(  
u< .N\/  
package org.rut.util.algorithm.support; h`/1JjP  
<4P"1#nHQ+  
import org.rut.util.algorithm.SortUtil; [7SR2^uf<j  
b `.h+=3  
/** )NS& 1$  
* @author treeroot ,Mw;kevw  
* @since 2006-2-2 JZB@K6 ~dO  
* @version 1.0 *|k/lI  
*/ W=T,hOyh<W  
public class SelectionSort implements SortUtil.Sort { 5*7 \Yjk?  
FBJ Lkg0  
/* d/`Q,Vl  
* (non-Javadoc) p*]nCUs}n  
* bO?Us  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j#E&u*IR  
*/ ' fP`ET5  
public void sort(int[] data) { >vY5%%}  
int temp; Smlf9h&  
for (int i = 0; i < data.length; i++) { "+:IA|1wD  
int lowIndex = i; t@\op}Z-M  
for (int j = data.length - 1; j > i; j--) { _m|Tr*i8  
if (data[j] < data[lowIndex]) { F%>`?NG+c  
lowIndex = j; |#=4]]>m  
} u|]`gsFZ\  
} |v%xOl  
SortUtil.swap(data,i,lowIndex); wsLfp82  
} fbK`A?5K  
} gnN"pa!&~  
H '(Ky  
} 1Qz1 Ehz>  
r*t\\2  
Shell排序: J  4OgV?  
;J3 (EB  
package org.rut.util.algorithm.support; ^w|apI~HSE  
Td6"o&0A!  
import org.rut.util.algorithm.SortUtil; e[a?5,s2  
Iib39?D W  
/** ]#VNZ#("  
* @author treeroot _Y gvLz %  
* @since 2006-2-2 52JtEt7E  
* @version 1.0 60 z =bd]  
*/ !3'&_vmG$  
public class ShellSort implements SortUtil.Sort{ !Yan}{A,  
A(Ss:7({  
/* (non-Javadoc) u9}k^W)E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ry%Fs&V*>  
*/ >C|i^4ppI  
public void sort(int[] data) { x#{.mN  
for(int i=data.length/2;i>2;i/=2){ NJ{M-K%>  
for(int j=0;j insertSort(data,j,i); T[YGQT|B  
} *U=%W4?W  
} y`OL^D4  
insertSort(data,0,1); 7pY7iR_  
} T1Q c?5K^  
`fRp9o/  
/** LiF(#OuZ  
* @param data BcvCm+.S:  
* @param j Cg! ]x o  
* @param i <8Zm}-U  
*/ VV1I2YcKt  
private void insertSort(int[] data, int start, int inc) { tM$w0Cj  
int temp; +w]KK6  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); WI$MT6  
} f2y:K6$'l*  
} yfd$T}WW6  
} }H4Z726  
=R  <X!@  
} 85 5JAf  
NJ;D Qv  
快速排序: XOe8(cXa9  
VkNg Vjg  
package org.rut.util.algorithm.support; TvzqJ=  
tJQFhY  
import org.rut.util.algorithm.SortUtil; RnX:T)+o  
h!L/ZeRaV  
/** ;L gxL Qy;  
* @author treeroot $bd&$@sA  
* @since 2006-2-2 wewYlm5@  
* @version 1.0 ; SS/bS|  
*/ $dp;$X3  
public class QuickSort implements SortUtil.Sort{ /Y>$w$S  
cBO.96ZHE  
/* (non-Javadoc) VR@V3 ~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GYX/G>-r  
*/ SGd[cA Ko  
public void sort(int[] data) { BP6|^Q  
quickSort(data,0,data.length-1); 8 pQx6QE  
} KL8G2"Z  
private void quickSort(int[] data,int i,int j){ l1&NU'WW  
int pivotIndex=(i+j)/2; .^fVm  
file://swap @nuMl5C-`  
SortUtil.swap(data,pivotIndex,j); c?;YufH'j  
tf VK  
int k=partition(data,i-1,j,data[j]); W_%p'8,  
SortUtil.swap(data,k,j); Eu4-=2!4  
if((k-i)>1) quickSort(data,i,k-1); SpM|b5c5  
if((j-k)>1) quickSort(data,k+1,j); xIN&>D'|N  
V6:S<A  
} &X^ -|7~N  
/** #^+C k HX  
* @param data <Be:fnPX7  
* @param i fL #e4  
* @param j V!Px975P  
* @return ^ucmScl  
*/ yh  
private int partition(int[] data, int l, int r,int pivot) { )O xsasn)M  
do{ \; 9log<Z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); jf`QoK  
SortUtil.swap(data,l,r); S~~G0GiW  
} _M;n.?H  
while(l SortUtil.swap(data,l,r); ^ZxT0oaL  
return l; 9vQI ~rz?  
} KI@OEy  
%j.B/U$  
} 7Rba@ cs9  
o =oXL2}  
改进后的快速排序: eSqKXmH[m  
X]Aobtz  
package org.rut.util.algorithm.support; >1}RiOd3  
3 #8bG(  
import org.rut.util.algorithm.SortUtil; v%ldg833l  
&V`~ z e  
/** :i?7RouO  
* @author treeroot 6T?$m7c  
* @since 2006-2-2 `X["Bgk$!T  
* @version 1.0 >@Nn_d  
*/ o*fNY  
public class ImprovedQuickSort implements SortUtil.Sort { sjZ@}Vk3b  
jkVX>*.|oy  
private static int MAX_STACK_SIZE=4096; qZV.~F+  
private static int THRESHOLD=10; X6T*?t3!9[  
/* (non-Javadoc) C[-M ~yIL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m@Q%)sc)  
*/ ^69ZX61vt  
public void sort(int[] data) { e5}KzFZmZ  
int[] stack=new int[MAX_STACK_SIZE]; |7pi9  
;kX:k~,]}>  
int top=-1; W$>AK_Y}  
int pivot; <>Nq ]WqA  
int pivotIndex,l,r; F> H5 ww9E  
;8~tt I  
stack[++top]=0; -p-<mC@<&S  
stack[++top]=data.length-1; 'm4v)w<y#  
7m<;"e)  
while(top>0){ )B!64'|M  
int j=stack[top--]; j><8V Qx  
int i=stack[top--]; J"$Y`;  
q-3e^-S*  
pivotIndex=(i+j)/2;  EOn[!  
pivot=data[pivotIndex]; %3@a|#g  
k-;A9!^h  
SortUtil.swap(data,pivotIndex,j); O0~Qh0~l  
-Wt (t2  
file://partition $q%l)]+  
l=i-1;  ds#om2)  
r=j; (QFu``ae+  
do{ D-S"?aO-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); H6vO}pq) r  
SortUtil.swap(data,l,r); Jg2*$gL;_  
} c+bOp 05o-  
while(l SortUtil.swap(data,l,r); l2S1?*  
SortUtil.swap(data,l,j); g{U?Y"  
DOa%|H'P  
if((l-i)>THRESHOLD){ "Xz[|Xl  
stack[++top]=i; *;0Ods+IcY  
stack[++top]=l-1; :rdnb=n  
} Q$B\)9`v[  
if((j-l)>THRESHOLD){ VmbfwHRWb  
stack[++top]=l+1; px~:'U  
stack[++top]=j; {I9<W'k{  
} ro8c-[V  
@@QB,VS;{<  
} z"PU`v  
file://new InsertSort().sort(data); b&_u+g  
insertSort(data); 9u^yEqG`  
} iYR`|PJi  
/** w dpd`  
* @param data *`WD/fG  
*/ 7+c}D>/`:  
private void insertSort(int[] data) { 62Q`&n6  
int temp; )"sJaHx<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bH1MDBb2  
} loByT p ^  
} 8oxYgj&~X  
} 0\DlzIO  
s^lm 81;  
} 3zsjL=ta  
M WHzrqCA  
归并排序: C<"b99\2`  
+h?Rb3=S  
package org.rut.util.algorithm.support; *{1]b_<  
{K ,-fbE  
import org.rut.util.algorithm.SortUtil; Hr}pO"%  
ZD`p$:pT  
/** f`Wces=5  
* @author treeroot &l;wb.%ijW  
* @since 2006-2-2 J=7<dEm&  
* @version 1.0 *If ]f0?%  
*/ D]B;5f  
public class MergeSort implements SortUtil.Sort{ 5 cz6\A&  
US2Tdmy@05  
/* (non-Javadoc) sA1 XtO<&7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *R8qnvE\()  
*/ b+!I_g4P  
public void sort(int[] data) {  FtmI\,  
int[] temp=new int[data.length]; :!WKD@]  
mergeSort(data,temp,0,data.length-1); r]yI5 ;  
} aX,ux9#  
vI1UFD D  
private void mergeSort(int[] data,int[] temp,int l,int r){ h$#zuqm  
int mid=(l+r)/2;  Zzea  
if(l==r) return ; Wt $q{g{C  
mergeSort(data,temp,l,mid); \L4+Dv<z  
mergeSort(data,temp,mid+1,r); e}bY 9  
for(int i=l;i<=r;i++){ Y&y5^nG  
temp=data; [&H?--I  
} >7j(V`i"y  
int i1=l; 6S6E 1~  
int i2=mid+1; [ (eO_I5ep  
for(int cur=l;cur<=r;cur++){ ptvM>zw'~g  
if(i1==mid+1) h& Q9  
data[cur]=temp[i2++]; [2Rw)!N  
else if(i2>r) D`fi\A  
data[cur]=temp[i1++]; {H$m1=S  
else if(temp[i1] data[cur]=temp[i1++]; ?~fuMy B  
else o^b4l'&o  
data[cur]=temp[i2++]; L7 f'  
} 3|g]2|~w@h  
} xfqW~&  
m(c5g[6nO  
} Fm,} sP"Qx  
G>H',iOI  
改进后的归并排序: "i3Q)$"S  
?iQA>P9B  
package org.rut.util.algorithm.support; +(9qAB7  
Ne 9R u'B6  
import org.rut.util.algorithm.SortUtil; IsjD-t  
EPMdR66  
/** ]&kzIxh  
* @author treeroot +ysP#uAA  
* @since 2006-2-2 2~BId&]  
* @version 1.0 \hcb~>=C  
*/ I];Hx'/<~  
public class ImprovedMergeSort implements SortUtil.Sort { #Kp/A N5YC  
!Qd4Y=  
private static final int THRESHOLD = 10; B U^3Ux$  
Z*Qra4GBl]  
/* ctg[C$<q|  
* (non-Javadoc) R0v5mD$:G  
* &%/kPF~<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u4kg#+H  
*/ e2 ?7>?  
public void sort(int[] data) { ,:!dqonn  
int[] temp=new int[data.length]; fGD#|a;,  
mergeSort(data,temp,0,data.length-1); BEv>?T 0  
} 5YG?m{hyn_  
j+c<0,Kj  
private void mergeSort(int[] data, int[] temp, int l, int r) { <Eo; CaaF/  
int i, j, k; ?r,lgaw  
int mid = (l + r) / 2; ttwfWfX  
if (l == r) 'b* yYX<  
return; 0O,l rF0'  
if ((mid - l) >= THRESHOLD) #.(6.Li  
mergeSort(data, temp, l, mid); }cL9`a9j  
else poqx O  
insertSort(data, l, mid - l + 1); _:,:U[@Vz  
if ((r - mid) > THRESHOLD) }lk_Oe1  
mergeSort(data, temp, mid + 1, r); /8GgEW9Q~G  
else w6fVZY4  
insertSort(data, mid + 1, r - mid); 1>"K<6b+  
IQS:tL/  
for (i = l; i <= mid; i++) { R18jju>Zr  
temp = data; |8$x  
} 7J]tc1-re  
for (j = 1; j <= r - mid; j++) { @}K'Ic  
temp[r - j + 1] = data[j + mid]; +oZq~2?*S6  
} ag-\(i;K]  
int a = temp[l]; () Z!u%j  
int b = temp[r]; );wSay>%(  
for (i = l, j = r, k = l; k <= r; k++) { 3hOiHO ;  
if (a < b) { $#g1Mx{  
data[k] = temp[i++]; S=>54!{`x  
a = temp; sS, Swgr  
} else { M ]dS>W%U  
data[k] = temp[j--]; gv}Esps R  
b = temp[j];  iK$)Iy0  
} `/:ZB6  
} x1\,WOrmK  
} /2K4ka<?7  
~n$VCLa  
/** ){|Bh3XV  
* @param data F$UvYy4O d  
* @param l _uuxTNN0x*  
* @param i NKD<VMcqw  
*/ 84UH& b'n  
private void insertSort(int[] data, int start, int len) { c rPEr  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "P<IQx  
} IWvLt  
} _ji"##K  
} Y]aVa2!Wb  
} cF9bSY_Eh  
7*8R:X+^r  
堆排序: a9C8Q l  
}>I|\Z0I  
package org.rut.util.algorithm.support; \kU0D  
dd#=_xe  
import org.rut.util.algorithm.SortUtil; =T'N6x5@  
> 4>!zZ  
/** ?!=yp#  
* @author treeroot <H{%`  
* @since 2006-2-2 K,{P b?  
* @version 1.0 >J+'hm@  
*/ U|QLc   
public class HeapSort implements SortUtil.Sort{ 68 % = V>V  
0|kkwZVPn  
/* (non-Javadoc) P,-f]k[_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q}[g/%  
*/ YqhZndktX  
public void sort(int[] data) { ^'j? { @  
MaxHeap h=new MaxHeap(); RKoM49W  
h.init(data); r(;sX  
for(int i=0;i h.remove(); 6%bZZTP`  
System.arraycopy(h.queue,1,data,0,data.length); 22aS <@}  
} wVU.j$+_#  
(}ObX!,  
private static class MaxHeap{ 7e[3Pu_/X  
5VD(fW[OW]  
void init(int[] data){ [=k$Q (.3  
this.queue=new int[data.length+1]; 7kX;|NA1  
for(int i=0;i queue[++size]=data; `}t<5_  
fixUp(size); jdz]+Q`jq  
} -]$q8 Q(hM  
} 72uARF  
oasp/Y.p  
private int size=0; 2d),*Cvf  
Qh*"B  
private int[] queue; NWnUXR  
%d-|C.  
public int get() { 9e5XS\  
return queue[1]; ]fxYS m  
} SI_u0j4%*  
M_ *KA  
public void remove() { P/%5J3_,  
SortUtil.swap(queue,1,size--); CK[w0VCT  
fixDown(1); \! `k:lusa  
} >\f'QQ  
file://fixdown Fpe>|"&  
private void fixDown(int k) { Xy(8}  
int j; b&wyp@k  
while ((j = k << 1) <= size) { 73C7g< Mx  
if (j < size %26amp;%26amp; queue[j] j++; *vFXe_.  
if (queue[k]>queue[j]) file://不用交换 Bs?B\k=  
break; Z+p'3  
SortUtil.swap(queue,j,k); .VD:FFkW  
k = j; {"rYlN7,  
} O+f'Ql  
} hCpX# rg?  
private void fixUp(int k) { A^L8"  
while (k > 1) { d2\#Zlu<  
int j = k >> 1; <GdQ""X  
if (queue[j]>queue[k]) qoZUX3{  
break; ,a6Oi=+>/U  
SortUtil.swap(queue,j,k); Z'Uc}M'U  
k = j; i>elK<R4  
} w'i8yl bZ  
} $M:Ru@Du2  
:o37 V!  
} E]MyP=g$  
%f-Uwq&}Y"  
} pnTuYT^%)  
e&k=fV  
SortUtil: oS0rP'V^  
i3dV2^O  
package org.rut.util.algorithm; <>l!  
ABG>W>H-S  
import org.rut.util.algorithm.support.BubbleSort; V#Pz `D  
import org.rut.util.algorithm.support.HeapSort; ]r&dWF  
import org.rut.util.algorithm.support.ImprovedMergeSort; *B*dWMh  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^J-"8%  
import org.rut.util.algorithm.support.InsertSort; ^2f2g>9j_C  
import org.rut.util.algorithm.support.MergeSort; (?ofL|Cg(  
import org.rut.util.algorithm.support.QuickSort; be+]kp  
import org.rut.util.algorithm.support.SelectionSort; &al\8  
import org.rut.util.algorithm.support.ShellSort; ^Mc zumG[  
KQu lz  
/** 7dh--.i  
* @author treeroot <c!I\y  
* @since 2006-2-2 oMV^W^<  
* @version 1.0 n&fV^ x  
*/ b&g`AnYT  
public class SortUtil { gI5Fzk@:  
public final static int INSERT = 1; ~i5t1  
public final static int BUBBLE = 2; |]=s  
public final static int SELECTION = 3; z$]HZ#aRE  
public final static int SHELL = 4; R![)B97^  
public final static int QUICK = 5; g@s'-8}X^  
public final static int IMPROVED_QUICK = 6; :G/.h[\R|  
public final static int MERGE = 7; !fT3mI6u\  
public final static int IMPROVED_MERGE = 8; o4d[LV4DS  
public final static int HEAP = 9; I]jK]]@  
 $hgsWa  
public static void sort(int[] data) { R) 'AI[la  
sort(data, IMPROVED_QUICK); zKf.jpF^  
} hcJny  
private static String[] name={ A6AIkKjzq  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^hIKDc!.m  
}; ?cmv;KV   
1}DUe. a  
private static Sort[] impl=new Sort[]{ I/Q5Y-atg  
new InsertSort(), n%%u0a %  
new BubbleSort(), [*2|#KSCX  
new SelectionSort(), jb {5   
new ShellSort(), .=% ,DT"  
new QuickSort(), (U@uJ  
new ImprovedQuickSort(), Xw<5VIAHm;  
new MergeSort(), lBcRt)_O7  
new ImprovedMergeSort(), {S=gXIh(y  
new HeapSort() h 1 `yW#%  
}; oHj64fE9  
Mz:t[rfs  
public static String toString(int algorithm){ W*D].|  
return name[algorithm-1]; !tr /$  
} B'` jdyaE9  
Z+J;nl  
public static void sort(int[] data, int algorithm) { 7J$5dFV2  
impl[algorithm-1].sort(data); |&xjuBC  
} "RG #e +  
#{L !o5  
public static interface Sort { GP._C=]?c  
public void sort(int[] data); e)x;3r"j  
} x|oa"l^JZ"  
y+ ZCuX  
public static void swap(int[] data, int i, int j) { Uk0]A  
int temp = data; i@|.1dWh  
data = data[j]; 9b}AZ]$  
data[j] = temp; 4 fxD$%9  
} TV&4m5  
} :1JICxAU  
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:
10+5=?,请输入中文答案:十五