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
  • 6504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。 TchByN6oN<  
插入排序: 6eW9+5oL  
9O-*iK  
package org.rut.util.algorithm.support; GoPK. E$  
2 5I a  
import org.rut.util.algorithm.SortUtil; G,XUMZ  
/** %[fZ@!B  
* @author treeroot ?A~a}bFZ  
* @since 2006-2-2 v+ "9&  
* @version 1.0 +uMK_ds~  
*/ Q`BB@E  
public class InsertSort implements SortUtil.Sort{ cL:hjr"  
3j w4#GW  
/* (non-Javadoc) yi,Xs|%.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bqRO-\vO  
*/ '|nAGkA  
public void sort(int[] data) { K4^mG  
int temp;  8s>OO&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fi'\{!!3m^  
} VX e7b  
} qnnP*15`  
} P*kC>lvSv  
o_PQ]1  
} :{~TG]4M  
i 8:^1rHp)  
冒泡排序: A<{&?_U  
p~dj-w  
package org.rut.util.algorithm.support; jWh}cM=  
)<_:%oB  
import org.rut.util.algorithm.SortUtil; wg|/-q-  
WR}<^a x  
/** E*8).'S%k  
* @author treeroot 4?l:.\fB:  
* @since 2006-2-2 XvkFP'%i/  
* @version 1.0 c)zwyBz  
*/ Z)G@ahO Q  
public class BubbleSort implements SortUtil.Sort{ JvM:xy9  
E 7"`D\*  
/* (non-Javadoc) "^5%g%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :tX,`G  
*/ {\ J%i|u  
public void sort(int[] data) { Ui }%T]  
int temp; R9InUX"k  
for(int i=0;i for(int j=data.length-1;j>i;j--){ hvF>Tu]^r  
if(data[j] SortUtil.swap(data,j,j-1); ~s>Ud<l%r  
} _+. )8   
} AmBLZ<f;  
} "K#zY~>L  
} F"t.ND  
k4YW;6<C+  
} sF p% T4j  
a/U4pSug  
选择排序: h2vD*W  
SaA-Krn  
package org.rut.util.algorithm.support; z:JJ>mxV  
SHN'$f0Mb  
import org.rut.util.algorithm.SortUtil; }&LLo  
bw OG|\  
/** I5w> *F   
* @author treeroot <@+{EK'`q  
* @since 2006-2-2 pSS8 %r%S'  
* @version 1.0 w~WW2 w  
*/ (r"2XXR  
public class SelectionSort implements SortUtil.Sort { {'[S.r`  
fk(h*L|sI  
/*  @+!u{  
* (non-Javadoc) w7yz4_:x^  
* /xkF9   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @xN)mi  
*/ "i; "  
public void sort(int[] data) { a fUOIM  
int temp; `h$^=84  
for (int i = 0; i < data.length; i++) { l6< bV#_qe  
int lowIndex = i; 7SjWofv  
for (int j = data.length - 1; j > i; j--) { `r*bG=  
if (data[j] < data[lowIndex]) { S"Drg m.  
lowIndex = j; <CGJ:% AY  
} N3?hu}  
} v)rQ4 wD:  
SortUtil.swap(data,i,lowIndex); 7oZtbBs]M  
} 48n7<M;I  
} N6%M+R/Q  
7^DN8g"&\  
} !Bn,f2  
YCo qe,5  
Shell排序: }Z8DVTpX}  
GA2kg7  
package org.rut.util.algorithm.support; H]Vo XJ\*  
0Y9fK? (  
import org.rut.util.algorithm.SortUtil; nBGcf(BE.$  
R9O1#s^  
/** d2Ox:| <)  
* @author treeroot Q ;$NDYV1  
* @since 2006-2-2 obSLy Ed  
* @version 1.0 &v<Am%!N  
*/ /@+[D{_Fw  
public class ShellSort implements SortUtil.Sort{ tz/NR/[  
5ii:93Hlj  
/* (non-Javadoc) h"On9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )jed@?  
*/ 3Jw}MFFV  
public void sort(int[] data) { T:!Re*=JJ  
for(int i=data.length/2;i>2;i/=2){ (GbZt{.  
for(int j=0;j insertSort(data,j,i); x4;ndck%U  
} *&~wl(+O=  
} < /9@RO  
insertSort(data,0,1); eT Z2f  
} {Zrf>ST  
BHJS.o*j~  
/** e\' =#Hw  
* @param data ,w0Io   
* @param j lW3wmSWn%  
* @param i _?a.S8LxJZ  
*/ _vr;cjMI  
private void insertSort(int[] data, int start, int inc) { !r`/vQ #  
int temp;  R]"3^k*  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vJ0Zv> n-  
} fkJElO-F  
} s)j3+@:#  
} E  *{_=pX  
pEX|zee  
} ><"0GPxrx  
J|:Zs1.<d  
快速排序: {Q AV  
!Yu|au  
package org.rut.util.algorithm.support; !MQVtn^C#  
F]6$4o[  
import org.rut.util.algorithm.SortUtil; #qg(DgH 7  
b]@@x;v$@  
/** ]6z ; M;F`  
* @author treeroot >0.a#-u^  
* @since 2006-2-2 ?$0t @E  
* @version 1.0 8 ;o*c6+  
*/ _ e94  
public class QuickSort implements SortUtil.Sort{ >^ zbDU1wT  
:V^|}C#  
/* (non-Javadoc) B),Z*lpC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nbdjk1E`~  
*/ 6$LQO),,  
public void sort(int[] data) { Z$:iq  
quickSort(data,0,data.length-1); % n~ 'UA  
} )_\q)t"=  
private void quickSort(int[] data,int i,int j){ ]]8^j='P'  
int pivotIndex=(i+j)/2; ##|]el%Y  
file://swap aF%V  
SortUtil.swap(data,pivotIndex,j); f'%Pkk  
!7jVKI80  
int k=partition(data,i-1,j,data[j]); R/?ZbMn]!  
SortUtil.swap(data,k,j); d0D*S?#8,C  
if((k-i)>1) quickSort(data,i,k-1); 22r$Ri_>  
if((j-k)>1) quickSort(data,k+1,j); ;eT+Ly|{  
 Or,W2  
} :XeRc"m<  
/** z 3N'Xk  
* @param data 52#Ac;Y  
* @param i pW1(1M)[%Z  
* @param j *PF=dx<8  
* @return {`=k$1  
*/ D) ;w)`  
private int partition(int[] data, int l, int r,int pivot) { FgTWym_  
do{ `F4gal^ ^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); n5;>e&  
SortUtil.swap(data,l,r); 9jW"83*5  
} 5Za%EaW%G  
while(l SortUtil.swap(data,l,r); ?<6yKxn  
return l; 0t(js_  
} XG}9) fT  
R;`C;Rbf  
} wi@Qf6(mn  
h #(J6ht  
改进后的快速排序: m\e?'-(s  
C5x*t Q|  
package org.rut.util.algorithm.support; L{Kl!   
x f<wM]&  
import org.rut.util.algorithm.SortUtil; T1WH  
i16kPU  
/** c[X:vDUX  
* @author treeroot ,#Mt10e{  
* @since 2006-2-2 `e^sQ>rDI  
* @version 1.0 WWG+0jQ9  
*/ dBEm7.nh  
public class ImprovedQuickSort implements SortUtil.Sort { 9N V.<&~  
p d(W(-`8!  
private static int MAX_STACK_SIZE=4096; %hCd*[Z}j  
private static int THRESHOLD=10; $c}-/U 8  
/* (non-Javadoc) l" +q&3Zx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .T\_4C  
*/ @23~)uiZa  
public void sort(int[] data) { L=wpZ`@ y  
int[] stack=new int[MAX_STACK_SIZE]; ?z0N- A2C2  
P9jPdls  
int top=-1; ?3a:ntX h  
int pivot; |VQmB/a  
int pivotIndex,l,r; SkyX\&  
U *:E|'>  
stack[++top]=0; ]'5 G/H5?;  
stack[++top]=data.length-1; Ri;_ 8v[H|  
M3Oqto<8"  
while(top>0){ 7mtX/w9  
int j=stack[top--]; ?,^ Aoy  
int i=stack[top--]; 5%RiM|+  
z4{ :X Da  
pivotIndex=(i+j)/2; B/Z-Cpz]  
pivot=data[pivotIndex]; =Hx]K8N)  
f[wxt n'r  
SortUtil.swap(data,pivotIndex,j); 6os{q`/Q])  
*cAI gO7  
file://partition RZP7h>y6@  
l=i-1; Kjt\A]R%  
r=j; I'0{Q`}  
do{ l;i /$Yu7  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )W*A[c 2  
SortUtil.swap(data,l,r); #Fz/}lO  
} M.\V/OX  
while(l SortUtil.swap(data,l,r); Cf>(,rt};  
SortUtil.swap(data,l,j); I`;SA~5  
"NtY[sT{V  
if((l-i)>THRESHOLD){ R*DQLBWc  
stack[++top]=i; v-DZW,  
stack[++top]=l-1; Fs&r ^ [/b  
} t^~Qv  
if((j-l)>THRESHOLD){ FaQc@4%o  
stack[++top]=l+1; uYC1}Y5N  
stack[++top]=j; nYE%@Up  
} L :Ldk  
n50W HlMtt  
} :B:6ezDF6  
file://new InsertSort().sort(data); DB3qf>@?  
insertSort(data); nM|F MK^  
} ~3Y4_b5E  
/** c3.;o  
* @param data ym_p49  
*/ tmi)LRF H  
private void insertSort(int[] data) { u(i=-PN_<  
int temp; iF Zqoz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Oi<yT"7  
} 5i+cjT2  
} XIn,nCY;  
} %Ni"*\  
5GbC}y>  
} ;OZl' . %`  
\3`r/,wY  
归并排序: nx{MUN7  
dozC[4mF  
package org.rut.util.algorithm.support; \P7<q,OGS  
%~L"TK`?  
import org.rut.util.algorithm.SortUtil; ~z)JO'Z$  
#mkf2Z=t-  
/** 1>Q4&1Vn  
* @author treeroot Ll .P>LH  
* @since 2006-2-2 0+e  
* @version 1.0 e, fZ>EJ  
*/ Kr;;aT0P  
public class MergeSort implements SortUtil.Sort{  hLj7i?  
e~7FK_y#0  
/* (non-Javadoc) r1:CHIwK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @qEUp7W.?  
*/ rn/~W[  
public void sort(int[] data) { (e Ssx/  
int[] temp=new int[data.length]; HoK+g_9~  
mergeSort(data,temp,0,data.length-1); ]kd:p*U6P  
} p<3<Zk 7~0  
aa" 3 Io  
private void mergeSort(int[] data,int[] temp,int l,int r){ A9;,y'm^8  
int mid=(l+r)/2; $O%"[w  
if(l==r) return ; DTG-R>y^  
mergeSort(data,temp,l,mid); Jj?HOtaM  
mergeSort(data,temp,mid+1,r); Q-z `rW  
for(int i=l;i<=r;i++){ :W;eW%Y  
temp=data; ;Y0M]pC  
} W4UK?#S+  
int i1=l; {@6:kkd  
int i2=mid+1; p6!5}dD(  
for(int cur=l;cur<=r;cur++){ t&Q(8Hz  
if(i1==mid+1) <cU%yA710  
data[cur]=temp[i2++]; Tl2(%qB  
else if(i2>r) =#=}|Q}  
data[cur]=temp[i1++]; 5?Pf#kq  
else if(temp[i1] data[cur]=temp[i1++]; @)U;hk)j;  
else F?[1 m2  
data[cur]=temp[i2++]; )FNn  
} 83 <CDjD  
} HQ]mDo  
c0Pj})-  
} 05g %5vHF  
sC0u4w>Y  
改进后的归并排序: @dx 8{oQ  
U$Z<lx2P  
package org.rut.util.algorithm.support; 7Mk>`4D'c  
k7j.VpN9  
import org.rut.util.algorithm.SortUtil; *jvP4Nz)k  
`mA;1S  
/** <ZheWl  
* @author treeroot @<`V q  
* @since 2006-2-2 z%#-2&i  
* @version 1.0 L^*f$Balz  
*/ 1\~I "$}  
public class ImprovedMergeSort implements SortUtil.Sort { Va?i#<a  
ZZ  Hjv  
private static final int THRESHOLD = 10; 7F2 RH 8)  
` Nf  
/* I=:"Fqj'N  
* (non-Javadoc) |L`U2.hb  
* <bb!BS&w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >I/@GX/  
*/ ;!G#Y Oe  
public void sort(int[] data) { 6aOyI ;Ux  
int[] temp=new int[data.length]; /QWXEL/M=  
mergeSort(data,temp,0,data.length-1); Y[]I!Bc  
} ^RO<r}B u  
heL`"Y2'y>  
private void mergeSort(int[] data, int[] temp, int l, int r) { PpKjjA<  
int i, j, k; 0G6aF"  
int mid = (l + r) / 2; q ajZ~oB{  
if (l == r) Wy}^5]R0E  
return; 3E^qh03(  
if ((mid - l) >= THRESHOLD) n}_}#(a  
mergeSort(data, temp, l, mid); 2Z%n "z68  
else w^Yo)"6  
insertSort(data, l, mid - l + 1); xT]t3'y|-  
if ((r - mid) > THRESHOLD) yo/;@}g}  
mergeSort(data, temp, mid + 1, r); g'b|[ q  
else K4jHha  
insertSort(data, mid + 1, r - mid); &a=78Z  
Kei0>hBi  
for (i = l; i <= mid; i++) { e5 L_<V^Jo  
temp = data; &l3(+4Sh  
} ?_d6 ;  
for (j = 1; j <= r - mid; j++) { w;yzgj:n&f  
temp[r - j + 1] = data[j + mid]; R~T}  
} _dRB=bl"O  
int a = temp[l]; VnVBA-#r|  
int b = temp[r]; ^3BPOK[*gB  
for (i = l, j = r, k = l; k <= r; k++) { Jx~H4y=z  
if (a < b) { .|^Gde  
data[k] = temp[i++]; ,dR.Sac v  
a = temp; z=) m6\  
} else { V:'F_/&X?  
data[k] = temp[j--]; q)L4*O  
b = temp[j]; LXh }U>a9  
} A&)2m  
} cM3B5Lp  
} Q"C*j'n   
`YC7+`q  
/** tE_n>~Zs  
* @param data ; cvMNU$fN  
* @param l | bRU=dg  
* @param i Ht4O5yl"  
*/  $8rnf  
private void insertSort(int[] data, int start, int len) { X=KW >  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^)?Wm,{"w  
} Te L&6F$  
} 1P(=0\ P>&  
} @B (oq1i@  
} 8T9 s:/%  
.Y{x!Q"  
堆排序: v:/\; 2  
NI#]#yM+  
package org.rut.util.algorithm.support; Fz';H  
6ICW>#fI`  
import org.rut.util.algorithm.SortUtil; ! #_2 ![  
~qj(&[U{c\  
/** ,c|MB  
* @author treeroot 't}\U&L.{  
* @since 2006-2-2 .FHk1~\%z^  
* @version 1.0 G@#lf@M]  
*/ ofV0L  
public class HeapSort implements SortUtil.Sort{ F`m}RL]g  
Mq)]2>"v  
/* (non-Javadoc) %L*EB;nK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~Ym _ {  
*/ Q;8z&4s@  
public void sort(int[] data) { MGsQF#6]  
MaxHeap h=new MaxHeap(); 05R"/r*  
h.init(data); myR{ }G  
for(int i=0;i h.remove(); H" `'d  
System.arraycopy(h.queue,1,data,0,data.length); fMg9h9U  
} dh7`eAMY   
zUL,~u  
private static class MaxHeap{ QF/_?Tm4  
zP%s]>hH  
void init(int[] data){ gAWi&  
this.queue=new int[data.length+1]; XJ\R'?j  
for(int i=0;i queue[++size]=data; DOJydYds  
fixUp(size); =yZq]g6Q  
} Zh;wQCDj  
} }W8A1-UF  
B6 (\1  
private int size=0; #4O4,F>e  
ah:["< z<  
private int[] queue; b(GV4%  
dT*Yv`h  
public int get() { H5x7)1Ir|  
return queue[1]; Kh\ 7%>K#  
} UgGa]b[9A  
'wk,t^)  
public void remove() { ?'6@m86d  
SortUtil.swap(queue,1,size--); I?}jf?!oM  
fixDown(1); ;,[0bmL  
} v#qdq!64  
file://fixdown KJ'ID  
private void fixDown(int k) { qx5`lm~L  
int j; i`2SebDj'w  
while ((j = k << 1) <= size) { c%/b*nQ(=  
if (j < size %26amp;%26amp; queue[j] j++; >|A,rE^Ojt  
if (queue[k]>queue[j]) file://不用交换 S[3"?$3S  
break; ,~naKd.ZY  
SortUtil.swap(queue,j,k); g= $U&Hgs  
k = j; 8xO   
} \,G9'c 'u  
} 1;$XX#7o  
private void fixUp(int k) { aYaEy(m  
while (k > 1) { -i:WA^yKgw  
int j = k >> 1; dYrgL3'  
if (queue[j]>queue[k]) ud `- w  
break; ]##aAh-P4&  
SortUtil.swap(queue,j,k); hU""YP ~y  
k = j; 9KU&M"Yq&i  
} /ovVS6Ai  
} d-_V*rYU  
X?'cl]1?  
} +_7a/3kh  
f"FFgQMkv  
} z9ADF(J?0'  
>n09K8 A  
SortUtil: Jx.f DVJ  
am]M2+,2Ip  
package org.rut.util.algorithm; 3@I0j/1#k1  
/>S^`KSTM  
import org.rut.util.algorithm.support.BubbleSort; -j3Lgm  
import org.rut.util.algorithm.support.HeapSort; CK7([>2  
import org.rut.util.algorithm.support.ImprovedMergeSort; gQ{ #C'  
import org.rut.util.algorithm.support.ImprovedQuickSort; rpR yB9  
import org.rut.util.algorithm.support.InsertSort; v;<gCzqQh  
import org.rut.util.algorithm.support.MergeSort; ;bB#P g  
import org.rut.util.algorithm.support.QuickSort; }CBQdH&g;  
import org.rut.util.algorithm.support.SelectionSort; ?z9!=A%<V~  
import org.rut.util.algorithm.support.ShellSort; Pz2 b  
wu.l-VmGp)  
/** tr<f ii 3<  
* @author treeroot `HRL .uX  
* @since 2006-2-2 e%JIqKS  
* @version 1.0 eT".psRiC  
*/ K|Sq_/#+U  
public class SortUtil { *,$5EN  
public final static int INSERT = 1; cb9-~*1  
public final static int BUBBLE = 2; ?.VKVTX^  
public final static int SELECTION = 3; 4[$:KGh3  
public final static int SHELL = 4; _U^[h!  
public final static int QUICK = 5; ~9+01UU^  
public final static int IMPROVED_QUICK = 6; 4$KDf;m@  
public final static int MERGE = 7; tS2 &S 6u  
public final static int IMPROVED_MERGE = 8; (kLaXayn  
public final static int HEAP = 9; @-)?uYw:r  
^y/Es2A#t  
public static void sort(int[] data) { * hs&^G  
sort(data, IMPROVED_QUICK); DU%E883  
} $IE}fgA@5  
private static String[] name={ Z0L($  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" AabQ)23R2  
}; =PRQ3/?5  
P5<9;PPbZ  
private static Sort[] impl=new Sort[]{ A O:F*%Q u  
new InsertSort(), c#N4XsG,  
new BubbleSort(), lr>NG,N  
new SelectionSort(), [ey# ,&T  
new ShellSort(),  `M I;.t  
new QuickSort(), uB  I/3aQ  
new ImprovedQuickSort(), g{]6*`/Z  
new MergeSort(), r1r$y2v~  
new ImprovedMergeSort(), eyMn! a  
new HeapSort() a*cWj }u  
}; ^+P.f[  
$ ZI ]  
public static String toString(int algorithm){ o`S``?`^)^  
return name[algorithm-1]; xQFY/Z  
} {^dq7!  
U4!KO;Jc  
public static void sort(int[] data, int algorithm) { x fb .Z(  
impl[algorithm-1].sort(data); i&:SWH=  
} x []ad"R  
@ 8H$   
public static interface Sort { |c/=9Bb  
public void sort(int[] data); z{W C w  
} U*C^g}iA  
d0 )725Ia  
public static void swap(int[] data, int i, int j) { zIrOMh  
int temp = data; nc;e NB  
data = data[j]; C1D:Xi-  
data[j] = temp; y47N(;vy  
} jB?SX  
} w.x&3aG  
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
如果您在写长篇帖子又不马上发表,建议存为草稿
认证码:
验证问题:
10+5=?,请输入中文答案:十五