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
  • 8237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。 dK J@{d  
插入排序: ]8xc?*i8  
{w |dM#  
package org.rut.util.algorithm.support; &sZ9$s:(^  
zldfRo\wl  
import org.rut.util.algorithm.SortUtil; /slm ]'  
/** *gM,x4Y  
* @author treeroot EI=Naq  
* @since 2006-2-2 [w&#+h-q  
* @version 1.0 O2`oe4."vd  
*/ JGk3 b=K  
public class InsertSort implements SortUtil.Sort{ f.aB?\"f6  
?u_gXz;A  
/* (non-Javadoc) #K :-Bys5v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $S6HZG:N  
*/ }XGMa?WR  
public void sort(int[] data) { BrlzN='j}  
int temp; cQ3W;F8|n  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n*vTVt)dJ  
} H{\.g=01  
} E(QZ!'%K+m  
} ,?xLT2>J_  
)h>\05|T  
} ,]PyDq6  
i}/e}s<-6  
冒泡排序: -y&v9OC2-  
#gW /qJ  
package org.rut.util.algorithm.support; b)on A|  
_KB{J7bs<a  
import org.rut.util.algorithm.SortUtil; biK)&6|`sa  
;ZQ- uz  
/** D00G1:Ft(T  
* @author treeroot ^wx%CdFm'P  
* @since 2006-2-2 ~ON1Zw[+  
* @version 1.0 *#&k+{a^2  
*/ |^7f\.oF  
public class BubbleSort implements SortUtil.Sort{ 8sN#e(@  
V=j-Um;  
/* (non-Javadoc) GBH_r 0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q^z=w![z  
*/ prNhn:j  
public void sort(int[] data) { IVI~1~  
int temp; ./'~];&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ [[R7~.;  
if(data[j] SortUtil.swap(data,j,j-1); S  ~@r  
} {]wIM^$6+  
} '|vD/Qf=&  
} Tub1S v>J  
} "w}-?:# j  
f4]N0  
} 8YuJ8KC  
-PNi^ K_  
选择排序: )y9;OA  
Y/. AUN Z  
package org.rut.util.algorithm.support; &+mV7o  
V ]79vC  
import org.rut.util.algorithm.SortUtil; Z[",$Lt  
KcC!N{  
/** T vrk^!  
* @author treeroot (GCG/8s  
* @since 2006-2-2 ' |&>/dyq  
* @version 1.0 "-w ^D!C  
*/ rRB~=J"  
public class SelectionSort implements SortUtil.Sort { \HAJ\9*w)  
sX+`wc  
/* >\V6+$cNp  
* (non-Javadoc) ]UDd :2yt  
* zVSx$6eiU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f}^I=pS&  
*/ \+-zRR0  
public void sort(int[] data) { +'%@!  
int temp; bS>R5*Zp  
for (int i = 0; i < data.length; i++) { HF"Eys  
int lowIndex = i; >~_J q|KBB  
for (int j = data.length - 1; j > i; j--) { 6+.>5e  
if (data[j] < data[lowIndex]) { a:85L!~:l  
lowIndex = j; *HR +a#o  
} 9B /s  
} {P-xCmZ~Wt  
SortUtil.swap(data,i,lowIndex); GL1'Zo  
} JPEIT  
} 3KSpB;HX  
B$rTwR"(-  
} sf(i E(o  
o]Gguw5W{  
Shell排序: "'m)VG  
2 P=[  
package org.rut.util.algorithm.support; &VDl/qnaL  
2d*_Qq1  
import org.rut.util.algorithm.SortUtil; \K;op2  
089 k.WG  
/** -"=)z /S  
* @author treeroot ~W<CE_/]k  
* @since 2006-2-2 +b^]Pz5  
* @version 1.0 NUCiY\td  
*/ )l&D]3$6K  
public class ShellSort implements SortUtil.Sort{ #%:c0=  
2-~|Z=eGW  
/* (non-Javadoc) F|>05>8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |( G2K'Ab  
*/ vA=Z=8  
public void sort(int[] data) { yGxv?%%2  
for(int i=data.length/2;i>2;i/=2){ (&jW}1D  
for(int j=0;j insertSort(data,j,i); kY"KD22a  
} F$Hx`hoy  
} 69-:]7.g  
insertSort(data,0,1); #)o7"PW:  
} CK0l9#g  
3X;{vO\a1  
/** 8'A72*dhX  
* @param data >H>gH2qp  
* @param j q/NY72tj0  
* @param i #E DEYEW7  
*/ 9Hd;35 3Q  
private void insertSort(int[] data, int start, int inc) { !;S"&mcPDJ  
int temp; .[?BlIlm  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R_^/,^1  
} 0"78/6XIs  
} ]dSK wxk  
} p~&BChBl!=  
SRZL\m}  
} U3E&n1AA  
pj0fM{E  
快速排序: S,''>`w  
$IVwA  
package org.rut.util.algorithm.support; "X04mQn15  
 |t))u`~  
import org.rut.util.algorithm.SortUtil; * RWm47  
/)EY2Y'  
/** EF#QH _X  
* @author treeroot :P$#MC  
* @since 2006-2-2 Ye5jB2Z  
* @version 1.0 $d/&k`  
*/ (&[[46  
public class QuickSort implements SortUtil.Sort{ z x@$RS+]  
"7,FXTaer  
/* (non-Javadoc) ~>Kq<]3~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nPN?kO=]  
*/ JN4fPGbV  
public void sort(int[] data) { Ya#h'+}  
quickSort(data,0,data.length-1); paW@\1Q  
} : =Kx/E:1  
private void quickSort(int[] data,int i,int j){ O/Rhf[7v*  
int pivotIndex=(i+j)/2; KL [ek  
file://swap 5|I55CTx  
SortUtil.swap(data,pivotIndex,j); @%hCAm  
.&1C:>  
int k=partition(data,i-1,j,data[j]); c)}2K0  
SortUtil.swap(data,k,j); C3XmK}h  
if((k-i)>1) quickSort(data,i,k-1); &H||&Z[pk  
if((j-k)>1) quickSort(data,k+1,j); M6rc!K  
>Kivuc  
} sbj";h=E  
/** }tG3tz0%fX  
* @param data 2&Jd f  
* @param i }7s>B24J  
* @param j hePPxKQ-  
* @return OtTBErQNF  
*/ 5GQLd  
private int partition(int[] data, int l, int r,int pivot) { 9zBMlc$X  
do{ X[](Kj^`<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); nXA\|c0  
SortUtil.swap(data,l,r); QAPu<rdJP  
} VsK>6S\T  
while(l SortUtil.swap(data,l,r); 80pid[F  
return l; F'JY?  
} R@iUCT^$  
XL$* _c <)  
} 'zZcn" +!  
$w#r"= )  
改进后的快速排序: #!2k<Q*5uT  
l|/LQ/  
package org.rut.util.algorithm.support; - nbMTY}  
Km#pX1]>e  
import org.rut.util.algorithm.SortUtil; 4)6xU4eBaL  
_[K"gu  
/** ,=QM#l]  
* @author treeroot b'YE9E  
* @since 2006-2-2 b:J(b?  
* @version 1.0 V\]" }V)"  
*/ p(F" /  
public class ImprovedQuickSort implements SortUtil.Sort { /9pM>Cd*Z  
IA&L]  
private static int MAX_STACK_SIZE=4096; @n&<B`/  
private static int THRESHOLD=10; I$t3qd{H&  
/* (non-Javadoc) CO:u1?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C? 4JXW  
*/ d[D&J  
public void sort(int[] data) { en F:>H4  
int[] stack=new int[MAX_STACK_SIZE]; )B# ,  
N|g;W  
int top=-1; )~J>X{hy  
int pivot; a:TvWzX,  
int pivotIndex,l,r; b5G}3)'w  
6 K` c/)  
stack[++top]=0; `d]IX^;  
stack[++top]=data.length-1; JAjmrX  
'XrRhF (  
while(top>0){ H( jXI  
int j=stack[top--]; 4mjgt<`  
int i=stack[top--]; Y-mK+1 2  
{c?JuV4q?  
pivotIndex=(i+j)/2; lbdTQ6R  
pivot=data[pivotIndex]; H9)m^ *  
}A=y=+4 j  
SortUtil.swap(data,pivotIndex,j); cF)/^5Z  
B+d<F[ |  
file://partition {66sB{P  
l=i-1; D]a:@x`+Bz  
r=j; wxg^Bq)D*R  
do{ dy__e^qi  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qBV x6MI  
SortUtil.swap(data,l,r); YTQt3=1ii  
} "@A![iP  
while(l SortUtil.swap(data,l,r); )4>2IQ  
SortUtil.swap(data,l,j); J7D}%  
`;|5  
if((l-i)>THRESHOLD){ K;hh&sTB  
stack[++top]=i; @`opDu!  
stack[++top]=l-1; :2 >hoAJJ  
} 0Sq][W=  
if((j-l)>THRESHOLD){ '>$EOg"  
stack[++top]=l+1; >(w2GD?  
stack[++top]=j; `afIYXP  
} U[L9*=P;  
RO;Bl:x4  
} p(;U@3G  
file://new InsertSort().sort(data); ,;?S\V  
insertSort(data); =gfI!w  
} \<Sv3xy&O  
/** YJg,B\z}  
* @param data *-W#G}O0  
*/ n+@F`]K e  
private void insertSort(int[] data) { (&|_quP7O  
int temp; &AVpLf:?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {t"+ 3zy'  
} Oa;X +  
} FLg*R/  
} )#|<w9uec  
4(}J.-B  
} ;*ix~taL%  
'7wd$rl  
归并排序: \!IMaB]  
2sNK  
package org.rut.util.algorithm.support; bNFLO Q  
>Rvx[`|O!m  
import org.rut.util.algorithm.SortUtil; g4`Kp; }&'  
UJ-?k &j,  
/** IK,|5]*Ar  
* @author treeroot D|Iur W1f  
* @since 2006-2-2 gqXS~K9t  
* @version 1.0 6S6f\gAM  
*/ <FMq>d$\  
public class MergeSort implements SortUtil.Sort{ ^ -FX  
yR{x}DbG  
/* (non-Javadoc) b" xmqWa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uv YF[@  
*/ 7Dnp'*H  
public void sort(int[] data) { )jWO P,|  
int[] temp=new int[data.length]; (,^*So/  
mergeSort(data,temp,0,data.length-1); >hBxY]< \  
} }$MN|s  
o"wXIHUmV  
private void mergeSort(int[] data,int[] temp,int l,int r){ 8+]hpa,q  
int mid=(l+r)/2; 3lV^B[$  
if(l==r) return ; Pe C7  
mergeSort(data,temp,l,mid); <YA&Dr3OD  
mergeSort(data,temp,mid+1,r); Vpy 2\wZWb  
for(int i=l;i<=r;i++){ DG4 d"Jy  
temp=data; #;n +YM">:  
} `V)Z)uN{0  
int i1=l; pa}*E  
int i2=mid+1; Z_\C*^  
for(int cur=l;cur<=r;cur++){ +&zYZA8v  
if(i1==mid+1) 6v,z@!b  
data[cur]=temp[i2++];  ^p n(=4  
else if(i2>r) k = ?h~n0M  
data[cur]=temp[i1++]; WI]o cF  
else if(temp[i1] data[cur]=temp[i1++]; ^[%%r3"$C  
else =%'`YbD$  
data[cur]=temp[i2++]; ZmOfEg|h\  
} R52I= a5,*  
} zF5uN:-s  
Oj<S.fi  
} ["\;kJ.  
zlR?,h-[3  
改进后的归并排序: I^o!n5VM  
|ZodlYF  
package org.rut.util.algorithm.support; +T9:Udi  
BpX6aAx  
import org.rut.util.algorithm.SortUtil; BBcV9CGU  
LZMYr  
/** hhoEb(BA  
* @author treeroot Y#!h9F  
* @since 2006-2-2 4f(Kt,0  
* @version 1.0 )%!XSsY.N|  
*/ u?s VcD[  
public class ImprovedMergeSort implements SortUtil.Sort { $}")1|U,X  
qY\f'K}Q*  
private static final int THRESHOLD = 10; b64 @s2]  
$gBd <N9|c  
/* jxJv.  
* (non-Javadoc) }|%eCVB  
* ?g!V!VS2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P/&]?f0/  
*/ [AV4m   
public void sort(int[] data) { 1-.~7yC  
int[] temp=new int[data.length]; 5NJ4  
mergeSort(data,temp,0,data.length-1); hzk6rYg1  
} nQ|r"|g  
vkLC-Mzm<  
private void mergeSort(int[] data, int[] temp, int l, int r) { mS k5u7  
int i, j, k; lO2[JP  
int mid = (l + r) / 2; E^U0f/5 m  
if (l == r) xkOpa,=FI  
return; y4+ ;z2' >  
if ((mid - l) >= THRESHOLD) RpLE 02U  
mergeSort(data, temp, l, mid); |yo\R{&6  
else V.wqZ {G  
insertSort(data, l, mid - l + 1); 64:fs?H  
if ((r - mid) > THRESHOLD) mo~*C   
mergeSort(data, temp, mid + 1, r); Qp`gswvE  
else =_YG#yS  
insertSort(data, mid + 1, r - mid); 0ZQ'_g|%  
ccd8O{G.M  
for (i = l; i <= mid; i++) { /c):}PJ^#7  
temp = data; 4 Jx"A\5*G  
} PqM1a oyX  
for (j = 1; j <= r - mid; j++) { )}9rwZ  
temp[r - j + 1] = data[j + mid]; !n^OM?.4  
} ?W E  
int a = temp[l]; m|OO,gR  
int b = temp[r]; h$L"8#  
for (i = l, j = r, k = l; k <= r; k++) { RmZ]" `  
if (a < b) { " vtCTl~t  
data[k] = temp[i++]; NH_<q"gT  
a = temp; !nAX$i~  
} else { ? `J[[",  
data[k] = temp[j--]; ~}Rj$%_  
b = temp[j]; r H~" 4  
} I@\OaUGr+  
} BC'llD  
} s`>[F@N7.o  
[5Lz/ix=  
/** pKi&[  
* @param data Rb3V^;i  
* @param l -.{g}R%  
* @param i NY?;erX  
*/ RoAlf+&Qb  
private void insertSort(int[] data, int start, int len) { dK>7fy;mv  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); trE{FT  
} ZcYh) HD  
} ]r_;dYa  
} %u;~kP|S%  
} z2Z^~, i  
7=(Hy\Q5xH  
堆排序: U4G`ZK v(!  
qY[xpm  
package org.rut.util.algorithm.support; LY-2sa#B$-  
? R>h `  
import org.rut.util.algorithm.SortUtil; fU!<HD h  
9uWY@zu  
/** /> 4"~q)  
* @author treeroot "O(9m.CZ  
* @since 2006-2-2 }pJwj  
* @version 1.0 P (S>=,Y&  
*/ 0T46sm r  
public class HeapSort implements SortUtil.Sort{ 'fPdpnJ<  
r [ K5w  
/* (non-Javadoc) MX+ Z ?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |\n_OS 7  
*/ N<DGw?Rl  
public void sort(int[] data) { In[Cr/&/Y  
MaxHeap h=new MaxHeap(); #h/Mbj~S  
h.init(data); )XWP\ h  
for(int i=0;i h.remove(); |.wEm;Bz  
System.arraycopy(h.queue,1,data,0,data.length); H'HSD,>(  
} `7H4Y&E  
]n-:Yv5 W  
private static class MaxHeap{ 9Vf1Xz  
qpXWi &g  
void init(int[] data){ (dv]=5""  
this.queue=new int[data.length+1]; a5w:u5  
for(int i=0;i queue[++size]=data; 'MY/*k7:  
fixUp(size); 2=_g f  
} f47M#UC  
} zhf.NCSt(  
O eL}EVs8=  
private int size=0; Bm]8m=p  
wgw(YU  
private int[] queue; QD%L0;j  
L QjsOo  
public int get() { ~9j%Hm0ht  
return queue[1]; t#2(j1  
} P 3'O/!  
x.q+uU$^  
public void remove() { k?'B*L_Mzv  
SortUtil.swap(queue,1,size--); ?Ae ve n  
fixDown(1); 4rrSb*  
} /d%=E  
file://fixdown >KJ+-QuO&  
private void fixDown(int k) { ) Yd?m0m*  
int j; r\/+Oa'  
while ((j = k << 1) <= size) { M|R b&6O  
if (j < size %26amp;%26amp; queue[j] j++; x*/S*!vx\  
if (queue[k]>queue[j]) file://不用交换 oJfr +3I  
break; >;[*!<pfK5  
SortUtil.swap(queue,j,k); Phke`3tth  
k = j; @*sWu_ -Y%  
} =%/)m:f!^  
} AF%@VLf  
private void fixUp(int k) { GI&h`X5,e  
while (k > 1) { KVJ_E!i  
int j = k >> 1;  f& CBU  
if (queue[j]>queue[k]) 8w.YYo8`  
break; RU\/j%^  
SortUtil.swap(queue,j,k); pa# IJ  
k = j; s;A@*Y;v  
} cb}[S:&|  
} uS^Ipxe\  
ye MB0Z*r  
} MNV % =G  
Gh}*q|Lz  
} ukUGvK  
mWvl 38  
SortUtil: Q 7?#=N?  
Bs?^2T~%{  
package org.rut.util.algorithm; {E8~Z8tT  
dN$Tf  
import org.rut.util.algorithm.support.BubbleSort; R47\Y  
import org.rut.util.algorithm.support.HeapSort; 15sp|$&`  
import org.rut.util.algorithm.support.ImprovedMergeSort; /~<@*-'  
import org.rut.util.algorithm.support.ImprovedQuickSort; r3PT1'P?L  
import org.rut.util.algorithm.support.InsertSort; cMOyo<F#^=  
import org.rut.util.algorithm.support.MergeSort; LSRk7'0  
import org.rut.util.algorithm.support.QuickSort; b1( $R[  
import org.rut.util.algorithm.support.SelectionSort; 7"C$pm6  
import org.rut.util.algorithm.support.ShellSort; j}C}:\-fY  
Ct>GYk$  
/** ){b@}13cF  
* @author treeroot HZ:6zH   
* @since 2006-2-2 g?ULWeZg5  
* @version 1.0 _D+J!f^  
*/ X93!bB  
public class SortUtil { r! MWbFw|X  
public final static int INSERT = 1; ZEx}$<)_  
public final static int BUBBLE = 2; Ll4g[8  
public final static int SELECTION = 3; 5bg s*.s  
public final static int SHELL = 4; - RU=z!{  
public final static int QUICK = 5; )<tI!I][j  
public final static int IMPROVED_QUICK = 6; S@/IQR  
public final static int MERGE = 7; a5 TioQ  
public final static int IMPROVED_MERGE = 8; ~5oPpTAe  
public final static int HEAP = 9; G2T|RT $_K  
n~V ]Z  
public static void sort(int[] data) { .~7FyLl$  
sort(data, IMPROVED_QUICK); ?)ONf#4Y  
} :Cj OPl  
private static String[] name={ (R("H/6xs  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" v p/yG   
}; U3dwI:cG  
K>@+m  
private static Sort[] impl=new Sort[]{ AnX%[W "  
new InsertSort(), e(<st r>  
new BubbleSort(), FFEfI4&SfS  
new SelectionSort(), s|y "WDyx5  
new ShellSort(), ZG&>:Si;  
new QuickSort(), mmk=97  
new ImprovedQuickSort(), #iHs* /85  
new MergeSort(), Ev}C<zk*  
new ImprovedMergeSort(), TJR:vr  
new HeapSort() fNW"+ <W  
}; 0a XPPnuX  
?m\t| /0Q  
public static String toString(int algorithm){  UWo]s.  
return name[algorithm-1]; pz.JWCU1  
} JAem0jPC8  
yL-YzF2  
public static void sort(int[] data, int algorithm) { G\+L~t  
impl[algorithm-1].sort(data); y#z  
} m0a?LY  
(bH`x]h#  
public static interface Sort { MjC_ (cs  
public void sort(int[] data); E;R n`oxk  
} /~$WUAh  
 abfW[J  
public static void swap(int[] data, int i, int j) { /Y2}a<3&0  
int temp = data; U ^5Kz-5.  
data = data[j]; _ =VqrK7T  
data[j] = temp; vkEiOFU!u  
} sW'2+|3"  
} DrY:9[LP  
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:
3+5=?,请输入中文答案:八 正确答案:八