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[JAVA]用Java实现的各种排序

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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。 [S-#}C?~  
插入排序: 9xK#( M  
~OLyG$JJ  
package org.rut.util.algorithm.support; ,,1y0s0`  
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import org.rut.util.algorithm.SortUtil; 7<L!" 2VB  
/** dtj b(*x  
* @author treeroot 82V;J 8T?  
* @since 2006-2-2 -O r\  
* @version 1.0 zTl,VIa3p  
*/ oA:`=f%\  
public class InsertSort implements SortUtil.Sort{ . Y$xNLoP[  
]dV $H  
/* (non-Javadoc) ++ 5!8Nv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O;&5> W,Z  
*/ I.>8p]X  
public void sort(int[] data) { X)= m4\R  
int temp; pc QkJ F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jwuSne  
} {9) HB:  
} {%RwZ'  
} ooCfr?E  
~ 588md :  
} +.rE|)BPy  
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冒泡排序: Eg2SC?5  
{lUaN0O:  
package org.rut.util.algorithm.support; Z 0v&AD=  
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import org.rut.util.algorithm.SortUtil; ]3 Ibl^J  
t0?t Xe.B  
/** E70o nR!i  
* @author treeroot b_u; `^  
* @since 2006-2-2 bA'N2~.,  
* @version 1.0 -s7!:MB%g  
*/ U-$nwji  
public class BubbleSort implements SortUtil.Sort{ #;+SAoN  
!w0=&/Y{R  
/* (non-Javadoc) U7e2NES  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Q=(1a11  
*/ kw7E<aF!  
public void sort(int[] data) { U'~]^F%eyu  
int temp; m( %PZ*s  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (/9erfuJ  
if(data[j] SortUtil.swap(data,j,j-1); J/,m'wH  
} I>6zX  
} m;TekJXm  
} W&[-QM8  
} 5{IbKj|  
w'y,$gtX/  
} k! x`cp  
aWP9i &  
选择排序: M"msLz  
<(xro/  
package org.rut.util.algorithm.support; 'F:Tv[qx  
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import org.rut.util.algorithm.SortUtil; w4&\-S#  
b `}hw"f  
/** Z Y5Pf 1  
* @author treeroot x2/ciC  
* @since 2006-2-2 /^gu&xnS  
* @version 1.0 /)dyAX(  
*/ "`4M4`'  
public class SelectionSort implements SortUtil.Sort { ,% .)mf  
v`Ja Bn  
/* [A] +Azc  
* (non-Javadoc) t1$pl6&,  
* I*g[Y=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /YvwQ  
*/ #BgiDLh  
public void sort(int[] data) { +CXq41g"c  
int temp; {d)L0KXK  
for (int i = 0; i < data.length; i++) { hvA|d=R(  
int lowIndex = i; Hq?dqg'%~  
for (int j = data.length - 1; j > i; j--) { g:6 `1C  
if (data[j] < data[lowIndex]) { ;RQ}OCz9}8  
lowIndex = j; sheCwhV  
} 64<*\z_  
} q$`>[&I~)  
SortUtil.swap(data,i,lowIndex);  9/I xh?  
} Sw?EF8}[  
} axK/YE7t  
[L ' >  
} 6JR FYgI  
ivt ~ S  
Shell排序: v_pFI8Cz)  
0xaK"\Q   
package org.rut.util.algorithm.support; [l7n "gJ~  
`_]UlI_h  
import org.rut.util.algorithm.SortUtil; jz>b>;  
vfc,{F=Q  
/** 'e$8 IZm  
* @author treeroot 2p58_^l  
* @since 2006-2-2 o!c~"  
* @version 1.0 41Ab,  
*/ m6A\R KJ'  
public class ShellSort implements SortUtil.Sort{ 6 .[3N~pq  
;hEeFJ=/G  
/* (non-Javadoc) 1F+JyZK}w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )@=fGNDt  
*/ [dqh-7  
public void sort(int[] data) { yb0Mn*X+ N  
for(int i=data.length/2;i>2;i/=2){ P{: 5i%qC  
for(int j=0;j insertSort(data,j,i); k%aJ%(  
} SO<9?uk.  
} F%O+w;J4  
insertSort(data,0,1); gr# |ZK.`  
} s3K!~v\L]  
'tjqfR  
/** k/BlkjlNE  
* @param data lvLz){  
* @param j p9S>H  
* @param i [| N73m,&  
*/ !\^W*nQ>l  
private void insertSort(int[] data, int start, int inc) { oR3t vw.  
int temp; CW.T`F  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !;${2Q  
} ocZ^rqo2w  
} [N<rPHT  
} +c__U Qx  
L@ejFXQg  
} 2lqy<o  
),^pi?  
快速排序: b&AeIU}&  
vkeZ!klYB  
package org.rut.util.algorithm.support; o1-_BlZ  
#qK5i1<  
import org.rut.util.algorithm.SortUtil; \: B))y?}d  
SDs#w  
/** nU isC5HW  
* @author treeroot FJT0lC  
* @since 2006-2-2 %'S[f  
* @version 1.0 b"B:DDw00  
*/ -MFePpUt  
public class QuickSort implements SortUtil.Sort{ SzfMQ@~  
_sY; dS/  
/* (non-Javadoc) &)_ z!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I8YCXh  
*/ .nEiYS|T  
public void sort(int[] data) {  k)W&ZY  
quickSort(data,0,data.length-1); [X>f;;h  
} POX{;[SV  
private void quickSort(int[] data,int i,int j){ 4Tb"+Y}  
int pivotIndex=(i+j)/2; wti  
file://swap >5D;uTy u  
SortUtil.swap(data,pivotIndex,j); 2(Aw  
\p]B8hLW  
int k=partition(data,i-1,j,data[j]); #wZH.i #  
SortUtil.swap(data,k,j); @Y}G,i  
if((k-i)>1) quickSort(data,i,k-1); _>8Q{N\- {  
if((j-k)>1) quickSort(data,k+1,j); $I4Wl:(~}  
U"~W3vwJ  
} KleiX7  
/** T8yMaC  
* @param data io@f5E+?  
* @param i *.Z~f"SZy*  
* @param j 6qWWfm/6  
* @return V7cr%tY5  
*/ mU.c!|Y  
private int partition(int[] data, int l, int r,int pivot) { P4+PY 8  
do{ b/ h#{'  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); rj4R/{h  
SortUtil.swap(data,l,r); {kr14 l*2  
} ff~1>=^  
while(l SortUtil.swap(data,l,r); ~qK/w0=j  
return l; \)ZCB7|  
} }<*KM)%  
tf[)| /M  
} 3Vak C  
i4XiwjCHN  
改进后的快速排序: {faIyKtW  
b`F]oQ_*  
package org.rut.util.algorithm.support; 2.MY8}&WBu  
2. v<pqn  
import org.rut.util.algorithm.SortUtil; > `0mn|+  
HV*;Yt  
/** 8pZOgh  
* @author treeroot bR8`Y(=F9b  
* @since 2006-2-2 NOKU2d4 G  
* @version 1.0 yqB!0) <  
*/ xErb11  
public class ImprovedQuickSort implements SortUtil.Sort { ;uzLa%JQ  
E]=>@EX  
private static int MAX_STACK_SIZE=4096; J;4aghzY  
private static int THRESHOLD=10; 8;# yXlf  
/* (non-Javadoc) NFR>[L V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \N$)Q.M  
*/ +[_3h9BK  
public void sort(int[] data) { !SIk9~rJ  
int[] stack=new int[MAX_STACK_SIZE]; sV\K[4HG  
LWhP d\  
int top=-1; ZDov2W  
int pivot; ia_l P  
int pivotIndex,l,r; "M3;>"`G  
(t@ :dW  
stack[++top]=0; S5d  
stack[++top]=data.length-1; 0N$FIw2  
a,r B7aD  
while(top>0){ ),|z4~  
int j=stack[top--]; 3rjKwh7  
int i=stack[top--]; Y*S:/b~y  
U3Z-1G~*r  
pivotIndex=(i+j)/2; kg\8 (@h]  
pivot=data[pivotIndex]; TBRG D l  
P+wpX  
SortUtil.swap(data,pivotIndex,j); =|8hG*D8  
-Tn%O|#K  
file://partition +T8MQ[(4  
l=i-1; O%N.;Ve  
r=j; '$?!>HN4  
do{ .J O1kt  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); j#Tl\S!m.I  
SortUtil.swap(data,l,r); )a x>*  
} /?($W|9+l  
while(l SortUtil.swap(data,l,r); ;mvVo-r*q  
SortUtil.swap(data,l,j); +.OdrvN4)  
"?<h,Hvi  
if((l-i)>THRESHOLD){ c*(^:#"9  
stack[++top]=i; 't5`Ni  
stack[++top]=l-1; m^=El7+  
} N/--6)5~0  
if((j-l)>THRESHOLD){ 3!vzkBr  
stack[++top]=l+1; ?~!9\dek,  
stack[++top]=j; n?;rWq"  
} xu%eg]  
1<5Ug8q  
} )nFyHAy-  
file://new InsertSort().sort(data); u05Yy&(f  
insertSort(data); VxuV`Plf  
} $mh\`  
/** D9?.Ru0.  
* @param data =I@I  
*/ ]V_A4Df  
private void insertSort(int[] data) { :2&"ak>N  
int temp; Z# bO}!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D W^Zuu/)  
} c+ByEP4EG  
} :7mHPe }(  
} 14jN0\  
G$%F`R[  
} w6WPfy(/2  
)%3T1 D/  
归并排序: j@ D,2B;  
C4P<GtR9  
package org.rut.util.algorithm.support; XM,slQ  
q b/}&J7+  
import org.rut.util.algorithm.SortUtil; o. ;Vrc  
^_<|~  
/** o:fe`#t  
* @author treeroot Y#tur`N  
* @since 2006-2-2 y&-QLX L  
* @version 1.0 nosD1sS.K8  
*/ B4wRwrVI>  
public class MergeSort implements SortUtil.Sort{ [ ~2imS  
nw0#gDI|  
/* (non-Javadoc) /of K7/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2J8:_Ql3I  
*/ u+KZ. n/  
public void sort(int[] data) { J9p4\=9  
int[] temp=new int[data.length]; q!?*M?Oz  
mergeSort(data,temp,0,data.length-1); a6^_iSk  
} 2vX $:4  
T'@+MA) ~  
private void mergeSort(int[] data,int[] temp,int l,int r){ >m. .  
int mid=(l+r)/2; oPM*VTMA  
if(l==r) return ; 13`Mt1R  
mergeSort(data,temp,l,mid); |K06H ?6X  
mergeSort(data,temp,mid+1,r); v{fcQb  
for(int i=l;i<=r;i++){ 2wHbhW[  
temp=data; y& 1@d+Lf  
} ?1a9k@[t  
int i1=l; ne/JC(  
int i2=mid+1; F_jHi0A  
for(int cur=l;cur<=r;cur++){ %0N HU`j  
if(i1==mid+1) W ';X4e  
data[cur]=temp[i2++]; 6CIzT.  
else if(i2>r) -p.\fvip  
data[cur]=temp[i1++]; ZcQu9XDIt  
else if(temp[i1] data[cur]=temp[i1++]; va'F '|  
else e)g &q'O  
data[cur]=temp[i2++]; n=vDEX:'  
} }$4z$&  
} >[,eK=  
v|o{AL:ei  
} ~~Ezt*lH  
yi>A ogQ,  
改进后的归并排序: .  yg#  
Cl]?qH*:  
package org.rut.util.algorithm.support; Xa?O)Bq.  
4n@lrcq(  
import org.rut.util.algorithm.SortUtil; m(6d3P  
a[(OeVQ5  
/** qul#)HI  
* @author treeroot dkZe.pv$j  
* @since 2006-2-2 >m,hna]RZ  
* @version 1.0 |uqI}6h.  
*/ 9ziFjP+1  
public class ImprovedMergeSort implements SortUtil.Sort { <78|~SKAV  
_wS=*-fT  
private static final int THRESHOLD = 10; (^m] 7l  
0f.j W O  
/* #e|o"R;/`  
* (non-Javadoc) 2 HEU  
* dD=$$( je  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a3tcLd|7J  
*/ 89g a+#7  
public void sort(int[] data) { JfIXv  
int[] temp=new int[data.length]; MK=oGzK  
mergeSort(data,temp,0,data.length-1); 0lg$zi x(  
} H.@$#D  
~\jP+[>M'  
private void mergeSort(int[] data, int[] temp, int l, int r) { VP~2F E  
int i, j, k; d?2ORr|m=  
int mid = (l + r) / 2; Cp6S2v I  
if (l == r) T8x)i\<  
return; Og/aTR<;=  
if ((mid - l) >= THRESHOLD) $`E?=L`$  
mergeSort(data, temp, l, mid); % /VCjuV  
else &uK(. @  
insertSort(data, l, mid - l + 1); 6*q1%rs:w  
if ((r - mid) > THRESHOLD) ^{4BcM7eH  
mergeSort(data, temp, mid + 1, r); =cS&>MT  
else jtP*C_Scv/  
insertSort(data, mid + 1, r - mid); :ZV |8xI  
ERpAV-Zf  
for (i = l; i <= mid; i++) { 3ic /xy;}  
temp = data; [-])$~WfW  
} h*k V@Dc  
for (j = 1; j <= r - mid; j++) { oS fr5 i  
temp[r - j + 1] = data[j + mid]; c\{N:S>  
} ` kT\V'  
int a = temp[l]; *c$[U{Px  
int b = temp[r]; EfrQ~`\  
for (i = l, j = r, k = l; k <= r; k++) { olE(#}7V  
if (a < b) { u ]e-IYH  
data[k] = temp[i++]; &Q883A J  
a = temp; i/x |c!E  
} else { Jr2yn{s=S  
data[k] = temp[j--]; ^v'kEsE^*  
b = temp[j]; CUu Owx6%  
} 4 XjwU`  
} wtTy(j,9  
} .h-mFcjy  
d m8t ~38  
/** iBSM \ n  
* @param data im2mA8OH  
* @param l #'_#t/u  
* @param i G% tlV&In  
*/ $[>{s9E  
private void insertSort(int[] data, int start, int len) { &<V U}c^!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); gwoe1:F:J  
} *#T: _  
} S hI1f  
} .~f )4'T 9  
} R^l0Bu]X  
 '"B  
堆排序: MJXnAIG?2  
6]brL.eGj  
package org.rut.util.algorithm.support; MXaF q K<Y  
)QE6X67i  
import org.rut.util.algorithm.SortUtil; r&]XNq'P9  
wk|+[Rl;L  
/** GY%9V5GB  
* @author treeroot 7g\v (P  
* @since 2006-2-2 o$*(N  
* @version 1.0 <fvu) f  
*/ Nw*<e ]uD  
public class HeapSort implements SortUtil.Sort{ W"c\/]aD  
1<r!9x9G  
/* (non-Javadoc) oy^-?+   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $hhXsu=  
*/ 0cS$S Mn{  
public void sort(int[] data) { U>2KjZB  
MaxHeap h=new MaxHeap(); 9 C[~*,qx  
h.init(data); Nk7y2[  
for(int i=0;i h.remove(); I%5vI}  
System.arraycopy(h.queue,1,data,0,data.length); t*IePz]/  
} u cpU $+  
?^Rp" H   
private static class MaxHeap{ Hr?lRaV  
t1w5U+z  
void init(int[] data){ `MI\/oM@  
this.queue=new int[data.length+1]; FRQ.ix2  
for(int i=0;i queue[++size]=data; J@5iD  
fixUp(size); L7rgkxI7k*  
} !85bpQ.  
} //63|;EEkl  
wN[lC|1c  
private int size=0; 4Zbn8GpC  
hxoajexU  
private int[] queue; w+)${|N?  
^~~Rto)Y  
public int get() { KuJ)alD;1  
return queue[1]; *tqD:hiF  
} |T<aWZb^=  
cGlN*GJ*H  
public void remove() { ;M~,S^U  
SortUtil.swap(queue,1,size--); XDPR$u8hM  
fixDown(1); n41#  
} KhR3$|fH<  
file://fixdown Lz 1.+:Ag  
private void fixDown(int k) { +=($mcw#[  
int j; "'v+*H 3  
while ((j = k << 1) <= size) { s<YN*~  
if (j < size %26amp;%26amp; queue[j] j++; Lf9hOMHx  
if (queue[k]>queue[j]) file://不用交换 kLgkUck8]  
break; T?1BcY  
SortUtil.swap(queue,j,k); c(Dp`f,  
k = j; n #X~"|U`  
} wkp2A18n  
} fI`Ez!w0  
private void fixUp(int k) { IWv(G Qx  
while (k > 1) { g{N}]_%Uh  
int j = k >> 1; kY]"3a  
if (queue[j]>queue[k]) /b,>fK^  
break; m*y&z'e\  
SortUtil.swap(queue,j,k); S`s]zdUTP  
k = j; u9"kF  
} :rb;*nY!  
} }g+kU1y  
mF 1f(  
} {!2K-7;  
rUKg<]&@  
} Biv)s@"f-Q  
q1rj!7  
SortUtil: T1Py6Q,-  
9Q9{>d#"  
package org.rut.util.algorithm; ("a@V8M`$F  
T_*inPf  
import org.rut.util.algorithm.support.BubbleSort; N@|<3R!N*e  
import org.rut.util.algorithm.support.HeapSort; [<XYU,{R  
import org.rut.util.algorithm.support.ImprovedMergeSort; 6{)pF  
import org.rut.util.algorithm.support.ImprovedQuickSort; _^_3>}y5op  
import org.rut.util.algorithm.support.InsertSort; og";mC  
import org.rut.util.algorithm.support.MergeSort; xT> 9ZZcE  
import org.rut.util.algorithm.support.QuickSort; V|YQhd0kv  
import org.rut.util.algorithm.support.SelectionSort; 89M'klZ   
import org.rut.util.algorithm.support.ShellSort; Q/|.=:~FO  
m1W) PUy  
/** %,[,mW4l   
* @author treeroot i]MemM-  
* @since 2006-2-2 9^/Y7Wp/@  
* @version 1.0 `KZV@t  
*/ N:lE{IvRJ  
public class SortUtil { ,V1"Typ#<  
public final static int INSERT = 1; _<Ak M"  
public final static int BUBBLE = 2; ]gBnzh.  
public final static int SELECTION = 3; Ek<Qz5)  
public final static int SHELL = 4; v]SxZLa  
public final static int QUICK = 5; )WoH>D  
public final static int IMPROVED_QUICK = 6; Z#.d7B"  
public final static int MERGE = 7; !; >s.]  
public final static int IMPROVED_MERGE = 8; 1 *' /B  
public final static int HEAP = 9; g|Lbe4?  
}-fHS;/  
public static void sort(int[] data) { BWxfY^,'&6  
sort(data, IMPROVED_QUICK); O7 ;=g!j  
} l 73% y  
private static String[] name={ H~yHSm 3  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?pZ"7kkD  
}; _#V&rY&@  
gnH {_  
private static Sort[] impl=new Sort[]{ VzXVy)d  
new InsertSort(), 4FzTf7h^  
new BubbleSort(), 9D14/9*(dU  
new SelectionSort(), ~Eg]Auk7  
new ShellSort(), E_~e/y"-  
new QuickSort(), CT'4.  
new ImprovedQuickSort(), g(pr.Dw6  
new MergeSort(), (#y2R F8j  
new ImprovedMergeSort(), g7! LX[  
new HeapSort() C<_\{de|9  
}; vD8pVR+  
%%K3J<5  
public static String toString(int algorithm){ }Nr6oUn  
return name[algorithm-1]; XncX2E4E  
}  Z}t;:yhR  
MiZ<v/L2  
public static void sort(int[] data, int algorithm) { ow'G&<0b  
impl[algorithm-1].sort(data); #HV5M1mb  
} H5 z1_O_+  
S*<Jy(:n  
public static interface Sort { ou-#+Sdd  
public void sort(int[] data); +(= -95qZ  
} ZP~H!  
ZV--d'YiEm  
public static void swap(int[] data, int i, int j) { sgO au\E  
int temp = data; E#_/#J]UQn  
data = data[j]; no8\Oees  
data[j] = temp; "_&ZRcd*  
} Y$>NsgQn6  
} /Pe xtj<  
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