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
  • 6548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。 +W+O7SK\y  
插入排序: @vWC "W  
!4uTi [e  
package org.rut.util.algorithm.support; f(.@]eu X  
reml|!F-)  
import org.rut.util.algorithm.SortUtil; 3nt&Sf  
/** wCiDvHF5+C  
* @author treeroot srfFJX7*  
* @since 2006-2-2 fsa  
* @version 1.0 D8P<mIu}Y  
*/ `_Bvae j?,  
public class InsertSort implements SortUtil.Sort{ %lZ++?&^  
l,}{Y4\G  
/* (non-Javadoc) KE\p|Xi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t ZUZNKODW  
*/ D$g|f[l  
public void sort(int[] data) { $M\|zUQu.  
int temp; iTgGf  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j""I,$t  
} )5Yv7x(K  
} Z5juyzj  
} O/\L0\T  
TQm x$  
} R }M'D15  
=jvM$  
冒泡排序: /sY(/ J E  
Vm.&JVb  
package org.rut.util.algorithm.support; UF)rBAv(/  
fr S1<+  
import org.rut.util.algorithm.SortUtil; <VV./W8e9  
IuDg-M[  
/** 0T2h3,  
* @author treeroot -o\$.Q3  
* @since 2006-2-2 z'a#lA.$}  
* @version 1.0 G)\s{qk  
*/ (j8tdEt  
public class BubbleSort implements SortUtil.Sort{ ?(GMe>  
v(^{ P  
/* (non-Javadoc) U JG)-x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )c=R)=N  
*/ xZjl_ b J  
public void sort(int[] data) { 03?TT,y$  
int temp; xB{0lI  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !}wJ+R ^2  
if(data[j] SortUtil.swap(data,j,j-1); HM%n`1ZU  
} P_+S;(QQ~d  
} 24{!j[,q@  
} A+%oE  
} F\ !;}z  
D+{h@^C9Z  
} ?&Si P-G  
0gPz|v>z  
选择排序: ($*bwqp]}  
(gBP`*2  
package org.rut.util.algorithm.support; ]Po9a4w#  
X}'3N'cbkU  
import org.rut.util.algorithm.SortUtil;  FRI<A8  
$Ch!]lJA  
/** \UFno$;mA  
* @author treeroot 5;{d*L  
* @since 2006-2-2 :)}iWKAse  
* @version 1.0 "!<Kmh5  
*/ 6'W79  
public class SelectionSort implements SortUtil.Sort { ~rE U83  
:P`sK&b_  
/* RC Fb&,51  
* (non-Javadoc) 3F2> &p|7  
* 7k{Oae\$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DG8]FhD^b  
*/ Et@= <g  
public void sort(int[] data) { .!0),KmkK  
int temp; @K36?d]e  
for (int i = 0; i < data.length; i++) { V ~w(^;o@  
int lowIndex = i; pH.wCD:1n  
for (int j = data.length - 1; j > i; j--) { {:40Jf  
if (data[j] < data[lowIndex]) { zsA6(? )u  
lowIndex = j; A<^IG+Q,B7  
} / 3:R{9S%  
} BDZB;DPb  
SortUtil.swap(data,i,lowIndex); eKn&`\j6  
} W >eJGZ<  
} b_-ESs]g  
+<6L>ZAL  
} # 'G/&&<  
ug[|'tR8  
Shell排序: pI7\]e  
N kp>yVj  
package org.rut.util.algorithm.support; @PuJre4!;L  
gT-'#K2qT  
import org.rut.util.algorithm.SortUtil; bs U$mtW  
1C+Y|p?KA  
/** 6NJ"ty9Bp  
* @author treeroot JC`|GaUy  
* @since 2006-2-2 :FwXoJc_+5  
* @version 1.0 ;k^wn)JE$  
*/ 7a0ZI  
public class ShellSort implements SortUtil.Sort{ 4XK*sR0-`  
Cl[ '6Lk  
/* (non-Javadoc) <&TAN L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iZ#dS}VlJ  
*/ raY5 nc{  
public void sort(int[] data) { S$\l M<M  
for(int i=data.length/2;i>2;i/=2){ s`xp6\$  
for(int j=0;j insertSort(data,j,i); E-_)w  
} '{XDhK  
} ;%2/  
insertSort(data,0,1); m8$6FN  
} Ei Wy`H;  
@/H1}pM~  
/** sR,]eo<p&  
* @param data *X\i= K!  
* @param j *3WK:0  
* @param i r&)/3^S '  
*/ <`5>;Xn=  
private void insertSort(int[] data, int start, int inc) { K"VphKvR  
int temp; G/_#zIN`8M  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); s4P8PDhz  
} n l Xg8t^G  
} & S_gNa  
} ,kuJWaUC@  
{"!V&}  
} +l@H[r;$  
3  8pw  
快速排序: m9Gyjr'L  
soW.  
package org.rut.util.algorithm.support; 7&XU]I  
|\@e  
import org.rut.util.algorithm.SortUtil; ?{%P9I  
5+rYk|*D+k  
/** 5tHv'@  
* @author treeroot 'IBs/9=ZC  
* @since 2006-2-2 Dk|S`3  
* @version 1.0 K`* 8 *k{  
*/ cy7GiB2'  
public class QuickSort implements SortUtil.Sort{ Tk $rwTCl  
6=A2Y:8  
/* (non-Javadoc) }M?GqA=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sY7:Lzs.,  
*/ 2,puu2F  
public void sort(int[] data) { Z!G_" 3  
quickSort(data,0,data.length-1); r J ?Y~Q  
} ^i_mGeu  
private void quickSort(int[] data,int i,int j){ ?;> s<  
int pivotIndex=(i+j)/2; c.6u)"@$  
file://swap fF[n?:VV  
SortUtil.swap(data,pivotIndex,j); |TF,Aj   
\D?6_ ,O  
int k=partition(data,i-1,j,data[j]); hD{+V!{  
SortUtil.swap(data,k,j); B<DvH"+$  
if((k-i)>1) quickSort(data,i,k-1); ~[Mk QJxe  
if((j-k)>1) quickSort(data,k+1,j); (ZQ{%-i?qR  
kU_bLC?>D  
} E:xpma1Qf  
/** kLMg|48fdI  
* @param data }cgEC-  
* @param i yk!,{Q?<$  
* @param j 15VOQE5Fl`  
* @return 78#je=MDg  
*/ #6fp "  
private int partition(int[] data, int l, int r,int pivot) { H&E c *MT  
do{ U4%d #  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); GBu&2}  
SortUtil.swap(data,l,r); \:4WbM:B  
} %\\l/{`eW  
while(l SortUtil.swap(data,l,r); \    
return l; c_}i(HQ  
} rOyK==8/Fg  
|4YDvDEJi  
} :N\*;>  
!cE>L~cza  
改进后的快速排序: ?;,s=2  
@YdS_W  
package org.rut.util.algorithm.support; 3m#v|52oj  
Z66akr  
import org.rut.util.algorithm.SortUtil; C/"fS#<  
w4:S>6X  
/** ]p(+m_F  
* @author treeroot n%I%Kbw  
* @since 2006-2-2 ! 1C3{  
* @version 1.0 P .3j |)NW  
*/ zBay 3a  
public class ImprovedQuickSort implements SortUtil.Sort { ;WJ}zjo >  
b=:AFs{  
private static int MAX_STACK_SIZE=4096; N/DcaHFYo  
private static int THRESHOLD=10; qW6a|s0}  
/* (non-Javadoc) 9@./=5N~3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) " ^ydoRZ  
*/ H!4!1J.=xw  
public void sort(int[] data) { 5xwztcR-  
int[] stack=new int[MAX_STACK_SIZE]; Vky~yTL)\  
"w9`UFu%^e  
int top=-1; g)!B};AA  
int pivot;  IKKd  
int pivotIndex,l,r; L-^vlP)Vu  
R3d>|`) +  
stack[++top]=0; yX$I<L<Suz  
stack[++top]=data.length-1; ]G1{@r)  
apF!@O^}y  
while(top>0){ zAC   
int j=stack[top--]; ul/=1]1?  
int i=stack[top--]; _Z.lr\  
Km8btS]n  
pivotIndex=(i+j)/2; I.Co8is  
pivot=data[pivotIndex]; @y;N u   
l] WV gu  
SortUtil.swap(data,pivotIndex,j); #w*1 !  
t@ #sKdv  
file://partition %O%+TR7Z  
l=i-1; S h=E.!  
r=j; ,]i ^/fT  
do{ [5:,+i  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @j`_)Y\  
SortUtil.swap(data,l,r); oR5hMu;j+  
} 2JYp.CJv  
while(l SortUtil.swap(data,l,r); 4wX{N   
SortUtil.swap(data,l,j); C<r7d [  
XPd>DH(Yc  
if((l-i)>THRESHOLD){ `i8osX[&p  
stack[++top]=i; eU1= :n&&\  
stack[++top]=l-1; nj!)\U  
} Op,Ce4A  
if((j-l)>THRESHOLD){ bENfEOf,  
stack[++top]=l+1; j,80EhZ  
stack[++top]=j; hc5M)0d  
} 'v* =}k  
}$hxD9z  
} |0U"#xkf  
file://new InsertSort().sort(data); $B7<1{<=W  
insertSort(data); [N$da=`wv  
} `mQY%p|  
/** U;D!m+.HK  
* @param data VW<s_  
*/ !X(Lvt/  
private void insertSort(int[] data) { 9.qIhg  
int temp; >>rW-&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z_QSVH68A  
} 4HVZ;,q  
} !.zUY6  
} -TU7GCb=  
Nb>|9nu O  
} r[vMiVb  
X, <&#l  
归并排序: : &mYz(1q  
wp-5B= #:{  
package org.rut.util.algorithm.support; [3nhf<O  
S5@/;T  
import org.rut.util.algorithm.SortUtil; fa=#S  
SDcxro|8i  
/** p.n]y=o.)  
* @author treeroot F:%= u =  
* @since 2006-2-2 /u<lh. hPW  
* @version 1.0 K7F uMB  
*/ i6-q%%]6  
public class MergeSort implements SortUtil.Sort{ "FT5]h  
;DL|%-%;$r  
/* (non-Javadoc) -OB72!sKU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7ks09Cy  
*/ Gnj;=f  
public void sort(int[] data) { {:IOTy  
int[] temp=new int[data.length]; GxLoNVr  
mergeSort(data,temp,0,data.length-1); 9r fR  
} n!|K#  
?g}n$%*5y!  
private void mergeSort(int[] data,int[] temp,int l,int r){ 4};!nYey!  
int mid=(l+r)/2; : :uD%a zd  
if(l==r) return ;  @es}bKP  
mergeSort(data,temp,l,mid); RV.z xPw>>  
mergeSort(data,temp,mid+1,r); $|C%G6!s?@  
for(int i=l;i<=r;i++){ yUq,9.6Ig  
temp=data; *ys@ 'Ai?  
} NZ e3 m  
int i1=l; xB68RQe)  
int i2=mid+1; !3DWz6u  
for(int cur=l;cur<=r;cur++){ U; ?%rM6  
if(i1==mid+1) qDqIy+WR  
data[cur]=temp[i2++]; b+'G^!JR  
else if(i2>r) +e)So+.W  
data[cur]=temp[i1++]; qlIC{:E0  
else if(temp[i1] data[cur]=temp[i1++]; G&0&*mp  
else U)zd~ug?m  
data[cur]=temp[i2++]; Yi{[llru  
} 7,!Mmu  
} 9;&2LT7z  
{DI_i +2  
} f?dNTfQ3mi  
":"QsS#*"#  
改进后的归并排序: 'AF2:T\  
#~Lh#@h  
package org.rut.util.algorithm.support; MfJk`-%~  
nR6~oB{-  
import org.rut.util.algorithm.SortUtil; .i"v([eQ  
r%xp^j}  
/** h76#HUBr!  
* @author treeroot f/Grem  
* @since 2006-2-2 NO +j    
* @version 1.0 Fh? ;,Z  
*/ $ e+@9LNK  
public class ImprovedMergeSort implements SortUtil.Sort { "}\2zub9  
+#6WORH0S  
private static final int THRESHOLD = 10; Umm_FEU#]  
YZ7rs] A  
/* R# 8D}5[&  
* (non-Javadoc) r4gkSwy  
* H'<9;bD -  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "@gJ[BL#  
*/ Fw+JhI VP  
public void sort(int[] data) { hAOXOj1  
int[] temp=new int[data.length]; +IuV8XT2(  
mergeSort(data,temp,0,data.length-1); k!xi (l<C  
} vROl}s;  
DOkEWqM!  
private void mergeSort(int[] data, int[] temp, int l, int r) { u z ` H  
int i, j, k; 394u']M  
int mid = (l + r) / 2; A~ '2ki5$g  
if (l == r) \C ZiU3  
return; B+jT|Y'  
if ((mid - l) >= THRESHOLD) .!U `,)I  
mergeSort(data, temp, l, mid); XU2 HWa  
else nOkX:5  
insertSort(data, l, mid - l + 1); zr&K0a{hc  
if ((r - mid) > THRESHOLD) L-Xd3RCD  
mergeSort(data, temp, mid + 1, r); Fz?ON1\  
else Nk3 ]<#$  
insertSort(data, mid + 1, r - mid); Y">Q16(  
Xr :"8FT  
for (i = l; i <= mid; i++) { N ]}Re$5  
temp = data; X-3L4@T:?  
} R=i$*6}a  
for (j = 1; j <= r - mid; j++) { "h7Z(Y  
temp[r - j + 1] = data[j + mid]; <s9Sx>Zb  
} W$EX6jTGI  
int a = temp[l]; K *{C:Y  
int b = temp[r]; m/0G=%d%k  
for (i = l, j = r, k = l; k <= r; k++) { g"2@E  
if (a < b) { *Sz`=U7n  
data[k] = temp[i++]; <!y_L5S|   
a = temp; .W,< ]L '  
} else { ZZ!d:1'7  
data[k] = temp[j--]; 3 cT  
b = temp[j]; ZA2y  
} ppR_y  
} r4J4|&ym  
} 3 V8SKBS  
Uk S86`.  
/** pA4/ '7nCl  
* @param data xE9^4-Px*  
* @param l >/6v` 8F  
* @param i /{>ds-;-  
*/ ,PJl32  
private void insertSort(int[] data, int start, int len) { 5irewh'R  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >Eik>dQ a  
} HjGT{o  
} A7VF >{L./  
} ^P"t "  
} a+A/l  
BR*" "/3`  
堆排序: eP &K]#  
;y=w :r\A  
package org.rut.util.algorithm.support; y|.wL=;  
.NCQiQ  
import org.rut.util.algorithm.SortUtil; XwX1i!'54  
E4}MvV=  
/** m;K Mr6sO  
* @author treeroot aFyNm@a  
* @since 2006-2-2 *:BN LM  
* @version 1.0 49/1#^T"Q>  
*/ dXe763~<  
public class HeapSort implements SortUtil.Sort{ ~i))Zc3,g\  
PA`b~Ct  
/* (non-Javadoc) jd]MC*%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "N4c>2Q  
*/ xqP0Z) ,Ow  
public void sort(int[] data) { BAzc'x&<  
MaxHeap h=new MaxHeap(); Gg5vf]VFo  
h.init(data); " 8;D^  
for(int i=0;i h.remove(); /Klwh1E  
System.arraycopy(h.queue,1,data,0,data.length); js;IUSj.  
} lDMYDy{<  
i;6\tK"!  
private static class MaxHeap{ pRMM1&H  
_[0Ugfz (  
void init(int[] data){ 9nM {x?  
this.queue=new int[data.length+1]; "D3JdyO_S  
for(int i=0;i queue[++size]=data; S _ nTp)  
fixUp(size); [0/?(i|  
}  gxU(&  
} (>WV)  
uKpl+>  
private int size=0; 86R}G/>>e  
q69a-5q  
private int[] queue; pNVao{::5  
G<Lm}  
public int get() { xs.[]>nQN  
return queue[1]; kwWO1=ikz@  
} _AVCh)Zb  
FuEHO6nx  
public void remove() { cTRCQ+W6:  
SortUtil.swap(queue,1,size--); pC5-,Z;8  
fixDown(1); `q$DNOrS  
} f8[2$i*cL  
file://fixdown yQou8P=%  
private void fixDown(int k) { t9 &O0tpe  
int j; }pTw$B  
while ((j = k << 1) <= size) { dN\pe@#lKP  
if (j < size %26amp;%26amp; queue[j] j++; $PrzJc  
if (queue[k]>queue[j]) file://不用交换 '\_ic=&u  
break; 2"BlV *\lS  
SortUtil.swap(queue,j,k); yv$MQ~]  
k = j; Hsp|<;Yg  
} $?*+P``  
} jLb3{}0  
private void fixUp(int k) { >z[d ~  
while (k > 1) { 2GZUMXK  
int j = k >> 1; T,WWQm  
if (queue[j]>queue[k]) ?W.Y x7c  
break; xl# j_d,  
SortUtil.swap(queue,j,k); K VQZ  
k = j; I,  
} }d6g{`  
} QL|Vke:N4  
w`!Yr:dU  
} ORfA]I-u  
ef!I |.FW  
} |d{(&s}  
ry7(V:ic  
SortUtil: Dt r'X@U  
. `hlw'20  
package org.rut.util.algorithm; c-M&cU+=L  
~_S`zzcZy4  
import org.rut.util.algorithm.support.BubbleSort; [FC%_R&&  
import org.rut.util.algorithm.support.HeapSort; \[,7#  
import org.rut.util.algorithm.support.ImprovedMergeSort; oiFtPki  
import org.rut.util.algorithm.support.ImprovedQuickSort; n`^</0  
import org.rut.util.algorithm.support.InsertSort; 1 ViDS  
import org.rut.util.algorithm.support.MergeSort; Ef?_d]  
import org.rut.util.algorithm.support.QuickSort; m$@CwQj  
import org.rut.util.algorithm.support.SelectionSort; k] f 7 3r  
import org.rut.util.algorithm.support.ShellSort; sM?DNE^BvW  
Y61E|:fV!  
/** F." L{g  
* @author treeroot $&a`zffG  
* @since 2006-2-2 kV(?u_ R  
* @version 1.0 SKcAZC  
*/ q=[0`--cd  
public class SortUtil { 0K#dWc}"a  
public final static int INSERT = 1; iqOd]H]v  
public final static int BUBBLE = 2; rH-_L&  
public final static int SELECTION = 3; kkd<CEz2IM  
public final static int SHELL = 4; xX|-5cM;  
public final static int QUICK = 5; Jwa2Y0  
public final static int IMPROVED_QUICK = 6; sq<y2j1oF  
public final static int MERGE = 7; }* BY!5  
public final static int IMPROVED_MERGE = 8; ;{Ovqo|  
public final static int HEAP = 9; BF]b\/I  
cuSXv)  
public static void sort(int[] data) { A#8/:t1AW  
sort(data, IMPROVED_QUICK); 'etCIl3  
} xNm<` Y?  
private static String[] name={ +'lfW{E1t  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" z6Mf>q  
}; $ Q2|{*  
kM9E)uT>(<  
private static Sort[] impl=new Sort[]{ vWj|[| <rX  
new InsertSort(), ?[T&y ,ln  
new BubbleSort(), I[F.M}5:z  
new SelectionSort(), uvm=i .  
new ShellSort(), | @mZ]`p  
new QuickSort(), ap=M$9L'  
new ImprovedQuickSort(), gbSZ- ej  
new MergeSort(), wk-ziw  
new ImprovedMergeSort(), 8E$KR:/:4  
new HeapSort() A4SM@ry  
}; O #0:6QX  
UQhfR}(  
public static String toString(int algorithm){ z{tyB  
return name[algorithm-1]; .c BJA&/  
} pX2 Ki^)]  
a{H~>d< ?  
public static void sort(int[] data, int algorithm) { o3uv"# C  
impl[algorithm-1].sort(data); 2I#fwsb  
} ]huqZI  
"lUw{3  
public static interface Sort { ? ZN8Ku  
public void sort(int[] data); J6f;dF^  
} ~j8x"  
ph3[}><6  
public static void swap(int[] data, int i, int j) { D5U\~'{L  
int temp = data; ogQbST  
data = data[j]; 4} =]QQoE  
data[j] = temp; thUs%F.5?  
} [81k4kU  
} Uu3[Cf=C  
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:
10+5=?,请输入中文答案:十五