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
  • 8388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。 LFPYnK  
插入排序: 3C(V<R?  
SoL"M[O  
package org.rut.util.algorithm.support; {xJ<)^fD8  
uPBtR  
import org.rut.util.algorithm.SortUtil; =U+_;;F=  
/** k2ZMDU  
* @author treeroot 2, r{zJ8  
* @since 2006-2-2 vy1N, 8a  
* @version 1.0 R#Hz%/:|A  
*/ TWT h!  
public class InsertSort implements SortUtil.Sort{ P_%kYcX'  
rZ^VKO`~I1  
/* (non-Javadoc) ,U#FtOec  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %Y<3v \`_  
*/ +]jJ:V  
public void sort(int[] data) { 4+4C0/$Y  
int temp; uE:`Fo=y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fd*<m8  
} iVqXf;eB!5  
} I vD M2q8f  
} ]ppws3*Pa  
()%;s2>F  
} &(,-:"{pNR  
* 4RL  
冒泡排序: Xrd-/('2  
T96M=?wh!  
package org.rut.util.algorithm.support; P'D'+qS  
B5 H=#  
import org.rut.util.algorithm.SortUtil; :`20i*  
BF+i82$zo  
/** 8c0ugM  
* @author treeroot [Cf{2WB:7  
* @since 2006-2-2 >19j_[n@VC  
* @version 1.0 V( SRw  
*/ SH#!Y  
public class BubbleSort implements SortUtil.Sort{ <Z\j#p:  
B*T;DE   
/* (non-Javadoc) 5R/k8UZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (G`O[JF  
*/ wQw y+S  
public void sort(int[] data) { %E`=c]!  
int temp; Q"b62+03  
for(int i=0;i for(int j=data.length-1;j>i;j--){ |FxTP&8~  
if(data[j] SortUtil.swap(data,j,j-1); bd@1j`i  
} A<<Bm M.%  
} 1n|K   
}  $qyST  
} i $;y  
S# sar}-I  
} ]O.Z4+6w  
&(YNz9L  
选择排序:  NncII5z  
&)#bdt[  
package org.rut.util.algorithm.support; 7/GL@H  
g RBbL1  
import org.rut.util.algorithm.SortUtil; F=r`'\JV[  
f4r)g2Zb[  
/** h^ =9R6im  
* @author treeroot [V_\SQV0  
* @since 2006-2-2 +DA ,|~k_  
* @version 1.0 pQ yH`  
*/ R1NwtnS  
public class SelectionSort implements SortUtil.Sort { Q9NKQuSu  
-VhxnhS  
/* @86?!0bt  
* (non-Javadoc) QPJz~;V2  
* g.d~`R@v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qhqqCVrsW  
*/ %hH@< <b(s  
public void sort(int[] data) { $V2.@ X  
int temp; h;S?  
for (int i = 0; i < data.length; i++) { l fJ lXD  
int lowIndex = i; BhCOT+i;c  
for (int j = data.length - 1; j > i; j--) { X8212[7  
if (data[j] < data[lowIndex]) { ]d -U  
lowIndex = j; G "`t$=0  
} `as6IMqJD  
} kl i)6R<  
SortUtil.swap(data,i,lowIndex); ^P}c0}^  
} & 24$*Oe  
}  D/]  
;Br #e1~  
} .l}oxWWoS  
~Op~~ m  
Shell排序: |]'0z0>  
C}8 3t~Q  
package org.rut.util.algorithm.support; >^ijj`{d  
hz*H,E!>  
import org.rut.util.algorithm.SortUtil; z`KP }-  
8bI;xjK^Q  
/** e<1)KqG  
* @author treeroot +je{%,*  
* @since 2006-2-2 @]xH t&j  
* @version 1.0 J{h?=vK  
*/ @'fWS^ ;&  
public class ShellSort implements SortUtil.Sort{ _8'z"w F  
_W^{,*p  
/* (non-Javadoc) g]Fm%iy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8KyF0r?  
*/ d<+@cf_9  
public void sort(int[] data) { {&d )O  
for(int i=data.length/2;i>2;i/=2){ wC~LZSTt  
for(int j=0;j insertSort(data,j,i); ]0@ 06G(y  
} lz88//@gZ  
} fs;pX/:FR  
insertSort(data,0,1); 4NxI:d$&*  
} %% A==_b  
*e}1KcJ  
/** u[~= a 5:4  
* @param data jpRC6b?  
* @param j AxZaV;%*  
* @param i 3}ATt".  
*/ _5&LV2  
private void insertSort(int[] data, int start, int inc) { CGY,I UG  
int temp; UcxMA%Pw7$  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >nOzz0,  
}  O)?  
} hR(p{$-T  
} !(>yB;u  
.Mu]uQUF  
} )W.Y{\D0  
32Jl|@8,g  
快速排序: IBSoAL  
mj _ V6`m4  
package org.rut.util.algorithm.support; w6FVSU]sY  
c!HmZ]/  
import org.rut.util.algorithm.SortUtil; !y syb  
=VOl  *  
/** T,SCK^  
* @author treeroot PuoN<9 #  
* @since 2006-2-2 gi5Ffvs$  
* @version 1.0 ?Y | *EH  
*/ C:$pAE(  
public class QuickSort implements SortUtil.Sort{ 9Ls=T=96  
kRH;c,E@  
/* (non-Javadoc) G;Thz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !:|[?M.`  
*/ fw+ VR.#2H  
public void sort(int[] data) { > J>|+W  
quickSort(data,0,data.length-1); F|{F'UXj|  
} #23m_w^L  
private void quickSort(int[] data,int i,int j){ B#Z-kFn@  
int pivotIndex=(i+j)/2; ]n$&|@  
file://swap /woC{J)4p  
SortUtil.swap(data,pivotIndex,j); <N}*|z7=b  
![CF >:e  
int k=partition(data,i-1,j,data[j]); a-Ef$(i_  
SortUtil.swap(data,k,j); z}f;_NX  
if((k-i)>1) quickSort(data,i,k-1); CY i{WV(:  
if((j-k)>1) quickSort(data,k+1,j); bf&k:.v'8  
c`x[C  
} ga+Z6|t  
/** w\2yippI  
* @param data \jGvom.  
* @param i tF=Y3W+L  
* @param j ?=a,  
* @return TVEFZ\p<A  
*/ Y~+`F5xX<  
private int partition(int[] data, int l, int r,int pivot) { 1?N$I}?  
do{ F\( 7B#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;1[Lwnm  
SortUtil.swap(data,l,r); k}r)I.Lp  
} 9HJA:k*k|  
while(l SortUtil.swap(data,l,r); ?7CHHk  
return l; R4P$zB_<2  
} DA -W =Cc  
_E<  
} xzjG|"a[GB  
g1zX^^nd,V  
改进后的快速排序: "}'Sk(  
[*|QA 9  
package org.rut.util.algorithm.support; H]JVv8  
#Y'svn1H  
import org.rut.util.algorithm.SortUtil; ps=+wg?]  
6h_OxO&!U  
/** \QKr2|  
* @author treeroot $,L,VYN  
* @since 2006-2-2 JU\wvP5j  
* @version 1.0 V|mz]H#|  
*/ .7Lv  
public class ImprovedQuickSort implements SortUtil.Sort { n`af2I2  
PS${B   
private static int MAX_STACK_SIZE=4096; 0&k!=gj:>Z  
private static int THRESHOLD=10; @mu2,%  
/* (non-Javadoc) 1[Ffl^\ARp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JD1D(  
*/ XOi[[G}  
public void sort(int[] data) { m"RE[dQ  
int[] stack=new int[MAX_STACK_SIZE]; [J6 b5  
6ISDY>p  
int top=-1; L.M|o  
int pivot; BL Q&VI4  
int pivotIndex,l,r; mbm|~UwD  
,H+LE$=  
stack[++top]=0; &}/h[v_#'  
stack[++top]=data.length-1; ^&-H"jF  
ZFsJeF'"  
while(top>0){ Q0cr^24/  
int j=stack[top--]; u]%>=N(^2  
int i=stack[top--]; q|fZdTw  
!NfN16  
pivotIndex=(i+j)/2; LUjev\Re  
pivot=data[pivotIndex]; L_4Zx sIv  
F6h|AF|"  
SortUtil.swap(data,pivotIndex,j); ;r}>1LhN  
3x{2Dhi  
file://partition !j|93*  
l=i-1; H D95>%  
r=j; _2C[F~ +l  
do{ ]A2l%V_7  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); V*U*_Y  
SortUtil.swap(data,l,r); "p{cz(  
} _hb@O2f  
while(l SortUtil.swap(data,l,r); ;uazQyo6  
SortUtil.swap(data,l,j); YN@ 4.&RP  
%95'oW)lo  
if((l-i)>THRESHOLD){ U'tfsf/V  
stack[++top]=i; Xu8_<%  
stack[++top]=l-1;  4[] /  
} c#6g[TE@  
if((j-l)>THRESHOLD){ G$"$k=[  
stack[++top]=l+1; P95A _(T=[  
stack[++top]=j; :W\xZ  
} +#c3Y ;JP  
VY9|8g/  
} u< ,c  
file://new InsertSort().sort(data); Q/ ,j v5  
insertSort(data); IO\ >U(:vx  
} W l+[{#  
/** uKcwVEu  
* @param data #+- /0{HT  
*/ Aey*n=V4#F  
private void insertSort(int[] data) { Evn=3Tw  
int temp; :uD*Q/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #*<*|AwoW|  
} 6SIk,Isy8  
} 8C{mV^cn~  
} $`emP Hel  
<+QXGz1  
} T&]J3TFJ  
x{X(Y]*1S  
归并排序: 6DFF:wrm&  
.kO;9z\B  
package org.rut.util.algorithm.support; ~Zc=FP:1  
p(F}[bP  
import org.rut.util.algorithm.SortUtil; lo*)% fy  
1px8af]  
/** KnC;j-j  
* @author treeroot /@<Pn&Rq  
* @since 2006-2-2 {i7Wp$ug  
* @version 1.0 L.uX  
*/ ByrK|lVM0  
public class MergeSort implements SortUtil.Sort{ ORV~F0d<  
SJtQK-%wK>  
/* (non-Javadoc) Qv%"iSe~J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) to1{7q  
*/ |-HV@c]  
public void sort(int[] data) { {1Z`'.FU  
int[] temp=new int[data.length]; YFVNkB O%  
mergeSort(data,temp,0,data.length-1); k(oHmw  
} !c+Nf2I7S  
V^P]QQ\ )  
private void mergeSort(int[] data,int[] temp,int l,int r){ DB'd9<  
int mid=(l+r)/2; TRl,L5wd-?  
if(l==r) return ; v: Av 2y  
mergeSort(data,temp,l,mid); X4:\Shb97  
mergeSort(data,temp,mid+1,r); hZE" 8%\q  
for(int i=l;i<=r;i++){ f;C*J1y  
temp=data; p`)GO.pz  
} n4cM /unU  
int i1=l; =7JvS~s  
int i2=mid+1; s0 ZF+6f  
for(int cur=l;cur<=r;cur++){ J2$L[d^  
if(i1==mid+1) +P?!yH,n  
data[cur]=temp[i2++]; >[=fbL@N<@  
else if(i2>r) gNdEPaaFI  
data[cur]=temp[i1++]; 2FxrMCC  
else if(temp[i1] data[cur]=temp[i1++]; Gk9Y{  
else p9;Oe,Il  
data[cur]=temp[i2++]; }dl[~iKW  
} |D %m>M6  
} E|t. 3  
ze<Lc/;X~  
} K85;7R5  
!1tHg Z2\  
改进后的归并排序: }7>r,  
fb7Gy  
package org.rut.util.algorithm.support; 0UEEvD5  
2F0@M|'  
import org.rut.util.algorithm.SortUtil; W0X/&v,k*  
qn VxP&  
/** 7cGc`7  
* @author treeroot =/Ob kVYf  
* @since 2006-2-2 d`he Wv^/`  
* @version 1.0 Jhclg0q  
*/ M^c`j#NQ  
public class ImprovedMergeSort implements SortUtil.Sort { U{vt9t  
g]IRv(gDh  
private static final int THRESHOLD = 10; v=A ]#O%  
'~HCYE:5  
/* 7~@9=e8G  
* (non-Javadoc) ?MT V!i0  
* O,`#h*{N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @l)HX'z0d  
*/  2D;,'  
public void sort(int[] data) { L*xu<(>K  
int[] temp=new int[data.length]; b'9\j.By  
mergeSort(data,temp,0,data.length-1); <9JI@\>  
} iGxlB  
~c&ygL3  
private void mergeSort(int[] data, int[] temp, int l, int r) { #-xsAKi  
int i, j, k; @6eM{3E.  
int mid = (l + r) / 2; :Ve>tZeW  
if (l == r) &b[ .bf  
return; xV&c)l>}  
if ((mid - l) >= THRESHOLD) \K$9r=!(  
mergeSort(data, temp, l, mid); sN`2"t/s  
else k e'aSD  
insertSort(data, l, mid - l + 1); |JZ3aS   
if ((r - mid) > THRESHOLD) v~f_~v5J!  
mergeSort(data, temp, mid + 1, r); #k %$A}9  
else &cDLSnR  
insertSort(data, mid + 1, r - mid); Hc`)Q vFRW  
EwvW: t1  
for (i = l; i <= mid; i++) { 4~mYj@lvd  
temp = data; WmO.&zp  
} BI\ )vr$  
for (j = 1; j <= r - mid; j++) { ]JQ7x[  
temp[r - j + 1] = data[j + mid]; {BkTJQ)  
} $#3O:aW  
int a = temp[l]; G:$Ta6=  
int b = temp[r]; F *`*5:7  
for (i = l, j = r, k = l; k <= r; k++) { :fo.9J  
if (a < b) { ,$i2vGd  
data[k] = temp[i++]; zX{O"w  
a = temp; SG:Fn8  
} else { KIyhvY~  
data[k] = temp[j--]; f{ ;L"*L  
b = temp[j]; ,$"*X-1  
} =Q\z*.5j.  
} Rra3)i`*  
} %49P<vo`?  
i2. +E&3v  
/** %gK@ R3p  
* @param data !GB\-(  
* @param l > -P UY  
* @param i 0 rM'VgB  
*/ ;WydXQ}Q^  
private void insertSort(int[] data, int start, int len) { eIZ7uSl  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yQAW\0`  
} Y nD_:ZK  
} :c4iXK0_^?  
} D hN{Y8'~  
} s(~tL-_ K  
xF:}a:c@H  
堆排序: =ttvC"4?  
1r!o,0!d-'  
package org.rut.util.algorithm.support; M]FA y"E  
6Z09)}tZb  
import org.rut.util.algorithm.SortUtil; 6j*L]S c  
>K|<hzZ  
/** :Ma=P\J W  
* @author treeroot ORVFp]gG  
* @since 2006-2-2 c[p>*FnP  
* @version 1.0 >XTDN  
*/ ,\YlDcl':0  
public class HeapSort implements SortUtil.Sort{ <+7]EwVcn^  
BHmmvbM#Qm  
/* (non-Javadoc) qDG{hvl[1r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UE:';(t  
*/ |p4D!M+$7  
public void sort(int[] data) { g8=j{]~C  
MaxHeap h=new MaxHeap(); }> q%##<n  
h.init(data); Uq}FrK}  
for(int i=0;i h.remove(); #6fQ$x(F#j  
System.arraycopy(h.queue,1,data,0,data.length); 41-u*$   
} g0Rny  
ua!i3]18  
private static class MaxHeap{ !p:kEIZ)y  
*d~).z)  
void init(int[] data){ ((& y:{?G  
this.queue=new int[data.length+1]; caG5S#8-"  
for(int i=0;i queue[++size]=data; p$5uS=:4`8  
fixUp(size); wSy|h*a,  
} x9QUo*MT  
} y\a@'LFL  
=1kE2u  
private int size=0; Hnq$d6F  
A_8UPGh8  
private int[] queue; P\jnht  
_*K=Z,a;\  
public int get() { fT]hpoJl  
return queue[1]; |M8FMH[_  
} ;u:A:Y4V  
~J~@mE2ks  
public void remove() { xE$>;30b_  
SortUtil.swap(queue,1,size--); L=7Y~aL=  
fixDown(1); y cT@ D/  
} nj90`O.K  
file://fixdown 3^jkd)xw  
private void fixDown(int k) { _Wb3,E a=  
int j; '' Pu  
while ((j = k << 1) <= size) { U4$}8~o4  
if (j < size %26amp;%26amp; queue[j] j++; Jw+k=>  
if (queue[k]>queue[j]) file://不用交换 g!QX#_~Il  
break; 2|6E{o  
SortUtil.swap(queue,j,k); !iNN6-v%  
k = j; ",v!geMvu  
} j3-^,r t4  
} /JqNiqvh  
private void fixUp(int k) { >'eY/>n{  
while (k > 1) { j1 Ns|oph1  
int j = k >> 1; bjL8Wpk  
if (queue[j]>queue[k]) a)o-6  
break; 7>-"r*W +z  
SortUtil.swap(queue,j,k); 3rxB]-  
k = j; Th'B5:`  
} zfsGf 'U  
} =qJlSb  
nB|m!fi<  
} KbXENz&C  
4MFdhJoN  
} IPVD^a ?  
Kggc9^ 7  
SortUtil: _c z$w5`  
9}*Pb6  
package org.rut.util.algorithm; lH%%iYBM  
tM:%{az  
import org.rut.util.algorithm.support.BubbleSort; S5+W<Qs  
import org.rut.util.algorithm.support.HeapSort; 7hzd.  
import org.rut.util.algorithm.support.ImprovedMergeSort; c,yjsxETW  
import org.rut.util.algorithm.support.ImprovedQuickSort; J4) ?hS  
import org.rut.util.algorithm.support.InsertSort; C j4ED  
import org.rut.util.algorithm.support.MergeSort; VYo2m  
import org.rut.util.algorithm.support.QuickSort; +|w%}/N  
import org.rut.util.algorithm.support.SelectionSort; m=4hi(g  
import org.rut.util.algorithm.support.ShellSort;  LBIsj}e  
ML!>tCT  
/** 6)]zt  
* @author treeroot t/vw%|AS  
* @since 2006-2-2 %ij,xN  
* @version 1.0 2lu AF2  
*/ )N'-A p$g  
public class SortUtil { n>XfXt =  
public final static int INSERT = 1; *SmR|Qy  
public final static int BUBBLE = 2; XU*4MU^'  
public final static int SELECTION = 3; eZ G#op  
public final static int SHELL = 4; ?qmJJ5Gn  
public final static int QUICK = 5; w(N$$  
public final static int IMPROVED_QUICK = 6; #xoFcjRE  
public final static int MERGE = 7; gebDNl\Y2  
public final static int IMPROVED_MERGE = 8; 8XG|K`'u  
public final static int HEAP = 9; k .#I ;7  
j /)A<j$  
public static void sort(int[] data) { oc>N| ww:  
sort(data, IMPROVED_QUICK); )*`cJ_t  
} xbNL <3"a  
private static String[] name={ <*3#nA-O>i  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" '}, 8x?  
}; PKg>|]Rf.  
PNp-/1Cx  
private static Sort[] impl=new Sort[]{ VkD}gJY  
new InsertSort(), Q`zW[Y&]  
new BubbleSort(), =K;M\_k%y  
new SelectionSort(), (7 O?NS  
new ShellSort(), 2[X\*"MQ2  
new QuickSort(), G_E \p%L>]  
new ImprovedQuickSort(), "nA~/t=  
new MergeSort(), 8dUP_t~d#q  
new ImprovedMergeSort(), OnND(YiX  
new HeapSort() 2EC<8}CG  
}; B1k;!@@1 4  
T(z/Jm3  
public static String toString(int algorithm){ ..fbRt  
return name[algorithm-1]; `L m9!?  
} 'E)g )@^  
i `7(5L~`  
public static void sort(int[] data, int algorithm) { v\G+t2{  
impl[algorithm-1].sort(data); |ERf3  
} VUUE2k;^  
o^3X5})sv  
public static interface Sort { v/GZByco>  
public void sort(int[] data); iO dk)  
} M `49ydh&  
*3A)s O  
public static void swap(int[] data, int i, int j) { >|rU*+I`  
int temp = data; V'8Rz#Gc5  
data = data[j]; }G ^nK m  
data[j] = temp; *cy!PF&  
} 1a tQ9  
} r E&}B5PN=  
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
温馨提示:欢迎交流讨论,请勿纯表情、纯引用!
认证码:
验证问题:
10+5=?,请输入中文答案:十五