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
  • 5369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。 DEp: vlW@  
插入排序: C#cEMKa  
,6)y4=8 L  
package org.rut.util.algorithm.support; cjpl_}'L:  
spDRQ_qq  
import org.rut.util.algorithm.SortUtil; HC}C_Q5c91  
/** b%$C!Tq'  
* @author treeroot |"*:ZSj  
* @since 2006-2-2 Sgy~Z^  
* @version 1.0 JFkjpBS  
*/ aDEP_b;  
public class InsertSort implements SortUtil.Sort{ M:M<bz Vu  
0Jif.<  
/* (non-Javadoc) zW&W`(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^(B*AE.  
*/ QrA+W\=_`y  
public void sort(int[] data) { 5qko`r@#  
int temp; a OHAG  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Darkj>$\  
}  8eLL  
} p0@mumh  
} <6$%Y2  
]<_+uciP5[  
} #bH[UId[  
a}{! %5  
冒泡排序: pr?(5{BL  
*mt v[  
package org.rut.util.algorithm.support; wAPdu y[  
i>}z$'X  
import org.rut.util.algorithm.SortUtil; RT9@&5>il  
^)I:82"|?  
/** d_hcv|%  
* @author treeroot Aed"J5[a  
* @since 2006-2-2 fba3aId[  
* @version 1.0 *4E,| IJ  
*/ vA`.8U 0S  
public class BubbleSort implements SortUtil.Sort{ "f+2_8%s+  
\x}UjHYIc&  
/* (non-Javadoc) :4d7%q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6;DPGx  
*/ &n wg$z{Y  
public void sort(int[] data) { FT=>haN  
int temp; 3dLz=.=)'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ v8[1E>&vx  
if(data[j] SortUtil.swap(data,j,j-1); gw^+[}U#  
} a4YyELXe  
} ^(3k uF  
} p,/^x~m3a  
} bHM .&4G  
yuB BO:\.  
} +V^_ksi\  
6iC:l%|u  
选择排序: h'+ swPh  
i :72FVo  
package org.rut.util.algorithm.support; 8!fw Xm  
|Rc#Q<Vh|  
import org.rut.util.algorithm.SortUtil; 0XNb@ogo  
&2J|v#$F  
/** v;7u"9t  
* @author treeroot <}%*4mv  
* @since 2006-2-2 DFMWgBL  
* @version 1.0 -M}iDBJx>#  
*/ AH+J:8k  
public class SelectionSort implements SortUtil.Sort { 0Og =H79<  
TPuzL(ws  
/* C'#:}]@E  
* (non-Javadoc) kLP^q+$u)!  
* QNY{ p k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )g9qkQ8q  
*/ Yaqim<j  
public void sort(int[] data) { oZCO$a  
int temp; HYS7=[hv6  
for (int i = 0; i < data.length; i++) { !RI&FcK  
int lowIndex = i; so*7LM?ib>  
for (int j = data.length - 1; j > i; j--) { \9DTf:!4Z  
if (data[j] < data[lowIndex]) { VTU-'q  
lowIndex = j; Rx.0P6s  
} \kx9V|A'  
} =v8q  
SortUtil.swap(data,i,lowIndex); AyDK-8a  
} wpdT "  
} _=b[b]Ec$s  
w# ['{GL  
} DWG}}vN:&  
h pU7  
Shell排序: 0ro+FJ r  
H{8\<E:V+}  
package org.rut.util.algorithm.support; I5mS!m/X  
smggr{-  
import org.rut.util.algorithm.SortUtil; tP9}:gu  
?a% u=G  
/** pH%K4bV)8  
* @author treeroot |NqQKot1  
* @since 2006-2-2 lz>hP  
* @version 1.0 "F&uk~ b$  
*/ 827N?pU$)  
public class ShellSort implements SortUtil.Sort{ |8"HTBb\CW  
WW.=>]7;  
/* (non-Javadoc) 2rk_ ssvs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [(hENX}o :  
*/ (Jm_2CN7X  
public void sort(int[] data) { (`&g  
for(int i=data.length/2;i>2;i/=2){ \)bwdNWI  
for(int j=0;j insertSort(data,j,i); 6m9Z5:xG  
} B!Y;VdX  
} fg2}~ 02n  
insertSort(data,0,1); A+'j@c\&!  
} (+@H !>r$$  
4s~o   
/** 01J.XfCd6  
* @param data H:`r!5&Qb5  
* @param j JW$#~"@r  
* @param i BmZd,}{  
*/ )9$Xfq/  
private void insertSort(int[] data, int start, int inc) { ;]gph)2cd  
int temp; >.A{=?   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2&M 8Wb#  
} UX6-{ RP  
} F n\)*; ^  
} 2neiUNT  
q(C+D%xB  
} ev>: 3_ s  
+Fk.B@KT,  
快速排序: F[lHG,g-  
?w.Yx$Z"  
package org.rut.util.algorithm.support; |cH\w"DcXw  
T SOt$7-  
import org.rut.util.algorithm.SortUtil; 7Y-GbG.'  
F~m tE8B:  
/** wXP1tM8T  
* @author treeroot J;qHw[6  
* @since 2006-2-2 0F"xU1z,  
* @version 1.0  j%lW+ [%  
*/ B=f{`rM)~W  
public class QuickSort implements SortUtil.Sort{ o_cj-  
qVf~\H@  
/* (non-Javadoc) rl4-nA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _M?:N:e  
*/ }Vt5].TA  
public void sort(int[] data) { )|:|.`H  
quickSort(data,0,data.length-1); b[$>HB_Na  
} E 0YXgQa  
private void quickSort(int[] data,int i,int j){ >q`G?9d2  
int pivotIndex=(i+j)/2; %P?W^mI  
file://swap RtSk;U1  
SortUtil.swap(data,pivotIndex,j); rHMsA|xz6  
t{$t3>p-t  
int k=partition(data,i-1,j,data[j]); VB Ce=<  
SortUtil.swap(data,k,j); yCwQ0|  
if((k-i)>1) quickSort(data,i,k-1); | #,b1|af  
if((j-k)>1) quickSort(data,k+1,j); 18Ty )7r'  
$ _ gMJ\{  
} $]O\Ryf6  
/** :g Ze>  
* @param data &.d~ M1Mz  
* @param i aFLm,  
* @param j %;gD_H4mm  
* @return ce@(Ct  
*/ -IPc;`<  
private int partition(int[] data, int l, int r,int pivot) { 2rA`y8g(L  
do{ h4V.$e<T&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); hNQ,U{`;^  
SortUtil.swap(data,l,r); 6,k}v:  
} !dZHG R  
while(l SortUtil.swap(data,l,r); EPyFM_k  
return l; MVV<&jho{^  
} u+hzCCwtR  
T\OLysc  
} z*:^*,  
%hY+%^k.  
改进后的快速排序: }lhJt|qc  
8G9V8hS1#B  
package org.rut.util.algorithm.support; BH=vI<D  
1<lLE1fk  
import org.rut.util.algorithm.SortUtil; N j?,'?'O}  
<#:"vnm$j  
/** gX);/;9mm+  
* @author treeroot U|,VH-#  
* @since 2006-2-2 ) ><{A  
* @version 1.0 .t\5H<z  
*/ 4%B${zP(.}  
public class ImprovedQuickSort implements SortUtil.Sort { m|'TPy  
D9JT)a  
private static int MAX_STACK_SIZE=4096; S53[K/dZo  
private static int THRESHOLD=10; Nhs]U`s(g  
/* (non-Javadoc) #  *\PU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r3#H]c  
*/ VaH#~!  
public void sort(int[] data) { UeE&rA]  
int[] stack=new int[MAX_STACK_SIZE]; ,rQznE1e  
\ ddbqg?`  
int top=-1; uRJLSt9m  
int pivot; f ^z7K  
int pivotIndex,l,r; R7+k=DI  
! XA07O[@  
stack[++top]=0; e%"L79Of6)  
stack[++top]=data.length-1; yt$V<8a  
UA}k"uM  
while(top>0){ R(3V ! ph  
int j=stack[top--]; K5b8lc  
int i=stack[top--]; %T!UEl`v  
jh9^5"vQ  
pivotIndex=(i+j)/2; "{|9Yis=  
pivot=data[pivotIndex]; +.{_n(kU  
C%l~qf1n  
SortUtil.swap(data,pivotIndex,j); Ip|7JL0Z  
}*;Hhbox  
file://partition H+F'K XP*K  
l=i-1; EY':m_7W  
r=j; #AE'arT<  
do{ 0/;T\9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); v@[MX- ,8  
SortUtil.swap(data,l,r); Z{ &PKS  
} ^BW V6  
while(l SortUtil.swap(data,l,r); J7$5<  
SortUtil.swap(data,l,j); RytQNwv3  
qd"*Td  
if((l-i)>THRESHOLD){ }wz )"  
stack[++top]=i; zS]Yd9;X1  
stack[++top]=l-1; B$aboL2  
}  !1;DRF  
if((j-l)>THRESHOLD){ J %URg=r  
stack[++top]=l+1; u JGYXlLE  
stack[++top]=j; }Z"<KF  
} 19h8p>Sx0  
F(:+[$)  
} ` Y"Rh[C  
file://new InsertSort().sort(data); )9==6p  
insertSort(data); DtR-NzjB  
} DM"`If%3j  
/** :U^a0s%B  
* @param data 4>gk XfTF  
*/ XV]`?  
private void insertSort(int[] data) { ^!!@O91T  
int temp; RR*<txdN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n"$D/XJO  
} %mg |kb6n  
} =#SKN\4  
} YB.r-c"Y  
ZmUS}   
} 9-I;'  
P*Uu)mG)G  
归并排序: |&o%c/  
/\(0@To  
package org.rut.util.algorithm.support; mq do@  
tNoo3&  
import org.rut.util.algorithm.SortUtil; OANn!nZ.  
P.=&:ay7?  
/** JEGcZeq)  
* @author treeroot Wl?*AlFlk  
* @since 2006-2-2 @?f3(G h,  
* @version 1.0 [?yOJU%`  
*/ Xq1n1_Z  
public class MergeSort implements SortUtil.Sort{ vH9/}w2  
Lr V)}1&5  
/* (non-Javadoc) [-=PK\ B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Rq<T2}K  
*/ eZk [6H  
public void sort(int[] data) { Atzp\oO  
int[] temp=new int[data.length]; dq[j.Nmq  
mergeSort(data,temp,0,data.length-1); JY~s-jxa  
} /)e&4.6  
\M'b %  
private void mergeSort(int[] data,int[] temp,int l,int r){ J+kxb"#d  
int mid=(l+r)/2; ;a[56W  
if(l==r) return ; VrrCW/ o  
mergeSort(data,temp,l,mid); !i2=zlpb[  
mergeSort(data,temp,mid+1,r); ?yU|;my  
for(int i=l;i<=r;i++){ &Dgho  
temp=data; 0,{Dw9W:  
} j"7 z  
int i1=l; L Lm{:T7  
int i2=mid+1; ]+{Cy\*kR  
for(int cur=l;cur<=r;cur++){ bo4 :|Z  
if(i1==mid+1) ebcGdC/%>  
data[cur]=temp[i2++]; b Bb$0HOF  
else if(i2>r) O sbY}*S  
data[cur]=temp[i1++]; uL1e?  
else if(temp[i1] data[cur]=temp[i1++]; ]4@_KKP  
else 1}}.e^Tsfr  
data[cur]=temp[i2++]; Ot`jjZ&  
} GTyS8`5E*  
} :w_Zr5H]  
mpIRe@#Z  
} %e+hM $Q  
~6Vs>E4G  
改进后的归并排序: ![18+Q\  
50F6jj  
package org.rut.util.algorithm.support; C7[_#1Oz  
5rr7lw WZ  
import org.rut.util.algorithm.SortUtil; 1>[3(o3t  
x}?y@.sn8  
/** cO.U*UTmX  
* @author treeroot y4tM0h  
* @since 2006-2-2 G!C2[:[g  
* @version 1.0 f nX!wN  
*/ Kzb&aOw  
public class ImprovedMergeSort implements SortUtil.Sort { b54<1\&  
?kI-o0@O.  
private static final int THRESHOLD = 10; @TdPeTw\  
Ks(+['*S  
/* . Zrt/;  
* (non-Javadoc) dP=1*  
* _>9|"seR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) - /]ro8V$  
*/ .9#4qoM'  
public void sort(int[] data) { xa[<k >r3  
int[] temp=new int[data.length]; (_^g:>)Cs  
mergeSort(data,temp,0,data.length-1); hc4<`W{  
} V<$g^Vb  
vRpMZ)e  
private void mergeSort(int[] data, int[] temp, int l, int r) { MRwls@z=  
int i, j, k; <x,u!}5J  
int mid = (l + r) / 2; nU-.a5  
if (l == r) H [wJ; l  
return; Qx1ZxJz #  
if ((mid - l) >= THRESHOLD) cpF\^[D  
mergeSort(data, temp, l, mid); '>^+_|2  
else  ?}e8g  
insertSort(data, l, mid - l + 1); [=z1~dXKb  
if ((r - mid) > THRESHOLD) B$1e AwT9  
mergeSort(data, temp, mid + 1, r); o3P`y:&  
else 2 :u4~E3  
insertSort(data, mid + 1, r - mid); 22"M#:r$  
f ?_YdVZ  
for (i = l; i <= mid; i++) { ^o+2:G5z}  
temp = data; bHH{bv~Z  
} *6s B$E_y  
for (j = 1; j <= r - mid; j++) { " ;_bB"q*  
temp[r - j + 1] = data[j + mid]; hZ Gr/5f  
} T^B&GgW  
int a = temp[l]; p+ SFeUp  
int b = temp[r]; }{[H@uhjH  
for (i = l, j = r, k = l; k <= r; k++) { IsxPm9P2<  
if (a < b) { (cAv :EKpo  
data[k] = temp[i++]; +Pd&YfU9  
a = temp; _A|1_^[G(  
} else { z6#N f,  
data[k] = temp[j--]; eS8tsI  
b = temp[j]; z9}rT<hy  
} LzB)o\a  
} ]:(>r&'  
} :WIbjI=  
$~`a,[e<  
/** =24)`Lyb  
* @param data  TOdH  
* @param l .7++wo!,  
* @param i "#z4  
*/ ck>|p09q'9  
private void insertSort(int[] data, int start, int len) { 5V!L~#  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); TS^(<+'  
} jz QmYcd  
} 7}(wEC  
} lEIX,amwa  
} ](a*R  
<?kr"[cQeP  
堆排序: A8&yB;T$y  
-sm{Hpf_b  
package org.rut.util.algorithm.support; $9Ho d-Z1  
.\= GfF'  
import org.rut.util.algorithm.SortUtil; 9:4PJ%R9  
`e .;P  
/** ^)<>5.%1''  
* @author treeroot &&4av*\I  
* @since 2006-2-2 [7q~rcf,Z  
* @version 1.0 Ap9CQ h=!  
*/ B;XFPQ#b  
public class HeapSort implements SortUtil.Sort{ 4j|]=58  
fIN8::Cs[  
/* (non-Javadoc) rp u9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M>P-0IC  
*/ ;ZPAnd:pb  
public void sort(int[] data) { IE.JIi^w  
MaxHeap h=new MaxHeap(); d!7cIYVZ  
h.init(data); KT~J@];Fb  
for(int i=0;i h.remove(); %Ez%pT0TQ#  
System.arraycopy(h.queue,1,data,0,data.length); O|m-Uz"+  
} 3.U5Each-  
A\ds0dUE  
private static class MaxHeap{ !;.i#c_u  
} R!-*Wk  
void init(int[] data){ 8fFURk  
this.queue=new int[data.length+1]; #qWa[kB  
for(int i=0;i queue[++size]=data;  /s.sW l  
fixUp(size); ?1?D[7$  
} 9-[g/qrF  
} nF0$  
,u^i0uOg  
private int size=0; zD}dvI}  
"P\k_-a'  
private int[] queue; Y,I0o{,g  
jJdw\`  
public int get() { 7].tt  
return queue[1]; a9 7A{7I&  
} [_*%  
PeEf=3  
public void remove() { :]iV*zo_  
SortUtil.swap(queue,1,size--); B;9X{"  
fixDown(1); s`GwRH<#  
} *2N$l>ql:k  
file://fixdown \gaGTc2&  
private void fixDown(int k) { %>`0hk88  
int j; YQe9g>G&  
while ((j = k << 1) <= size) { Rd|};-  
if (j < size %26amp;%26amp; queue[j] j++; GV#"2{t j  
if (queue[k]>queue[j]) file://不用交换 O&!>C7  
break; S~0 mY} m  
SortUtil.swap(queue,j,k); 5jD2%"YUV  
k = j; =Y#)c]`  
} %$ |=_K)Ks  
} }+G6`Zd  
private void fixUp(int k) { NF&R}7L  
while (k > 1) { gd^1c}UZX  
int j = k >> 1; )D_#  
if (queue[j]>queue[k]) ,!_$A}@0 ^  
break; f?kA,!  
SortUtil.swap(queue,j,k); RX}6H<5R  
k = j; VeeQmR?u-  
} Tu95qL~^  
} \72(d  
`VY -3  
} bDVz+*bU}  
(Em^qN  
} 0G ^73Z  
|S[Gg  
SortUtil: LPX@oha  
P,lKa.  
package org.rut.util.algorithm; *t.L` G  
S]mXfB(mh  
import org.rut.util.algorithm.support.BubbleSort; /=&HunaxI  
import org.rut.util.algorithm.support.HeapSort; 7.-Q9xv  
import org.rut.util.algorithm.support.ImprovedMergeSort; f{MXH&d 1\  
import org.rut.util.algorithm.support.ImprovedQuickSort; ,<s'/8Ik  
import org.rut.util.algorithm.support.InsertSort; [t/7hx"2t  
import org.rut.util.algorithm.support.MergeSort; Ae R3wua  
import org.rut.util.algorithm.support.QuickSort; ce-5XqzY@  
import org.rut.util.algorithm.support.SelectionSort; Q$Qs$  
import org.rut.util.algorithm.support.ShellSort; 'D(|NYY  
H+y(W5|2/X  
/** 2Sbo7e  
* @author treeroot kaf4GME]  
* @since 2006-2-2 xU+c?OLi  
* @version 1.0 <|9s {z  
*/ `6;%HbP$W+  
public class SortUtil { >utm\!Gac  
public final static int INSERT = 1; INqD(EG   
public final static int BUBBLE = 2; KR4X&d6  
public final static int SELECTION = 3; B|U*2|e  
public final static int SHELL = 4; [F{q.mZj  
public final static int QUICK = 5; $\?BAkx  
public final static int IMPROVED_QUICK = 6; ew -5VL   
public final static int MERGE = 7; Y1?w f.  
public final static int IMPROVED_MERGE = 8; NF+^  
public final static int HEAP = 9; ?CIMez(h  
vpu20?E>5z  
public static void sort(int[] data) { FJJ+*3(  
sort(data, IMPROVED_QUICK); _tDSG]  
} a<-NB9o~v  
private static String[] name={ 3p`*'j2R  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7qj<|US  
}; 21i?$ uU  
cnJ(Fv_F$  
private static Sort[] impl=new Sort[]{ &?C% -"|c  
new InsertSort(), s<,[xkMB  
new BubbleSort(), mTXeIng?  
new SelectionSort(), tmEF7e`(o  
new ShellSort(), &U/7D!^X  
new QuickSort(), W(U:D?e  
new ImprovedQuickSort(), 7 -yf  
new MergeSort(), pv);LjF  
new ImprovedMergeSort(), {"hX_t  
new HeapSort() KY 085Fvs  
}; #rnO=N8  
5#kN<S!  
public static String toString(int algorithm){ *9.4AW~]X  
return name[algorithm-1]; x9S~ns+r  
} L-Qc[L  
s/#L?[YH  
public static void sort(int[] data, int algorithm) { Zn{,j0;  
impl[algorithm-1].sort(data); &`"Q*N2{  
} iV<4#aBg  
1_$y bftS  
public static interface Sort {  _0^f  
public void sort(int[] data); %%`Q5I  
} /J{ e _a  
sk* AlSlM  
public static void swap(int[] data, int i, int j) { j6x1JM  
int temp = data;  /6)6  
data = data[j]; Yzo_ZvL  
data[j] = temp; &ru2&Sz  
} 0 _ 4p>v:  
} k~ Z9og  
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