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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。 BFJnV.0M!  
插入排序: 8&Y^""#e)  
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package org.rut.util.algorithm.support; Gm.]sE?.  
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import org.rut.util.algorithm.SortUtil; 78H'ax9m  
/** CoAv Sw  
* @author treeroot e,XYVWY%  
* @since 2006-2-2  y%b F&  
* @version 1.0 f &wb  
*/ Ktm4 A O  
public class InsertSort implements SortUtil.Sort{ 3nnJ8zQ  
{Z5nGG  
/* (non-Javadoc) RT J3qhY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;x1 PS  
*/ fku<,SV$O4  
public void sort(int[] data) { 4u47D$=  
int temp; ZH)="qx [  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PO 7Lf#9]  
} 4J([6<  
} tlp@?(u  
} ,47Y9Kz9  
8rS:5:Hi  
} (<oy N7NT  
'V=P*#|SR  
冒泡排序: "s_lP&nq  
QM#4uI55B  
package org.rut.util.algorithm.support; E5lBdM>2  
)fSOi| |C  
import org.rut.util.algorithm.SortUtil; [ $n_6  
i`$*T y"x  
/** 7 uKY24  
* @author treeroot $.rhRKs  
* @since 2006-2-2 K]" #C  
* @version 1.0 1sdLDw_)p  
*/ I4q9|'-yx  
public class BubbleSort implements SortUtil.Sort{ in-HUG  
krvp&+uX  
/* (non-Javadoc) zSja/yq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :'l^kSP_*C  
*/  K;z7/[%  
public void sort(int[] data) { y)!5R3b  
int temp; z]?N+NHOA  
for(int i=0;i for(int j=data.length-1;j>i;j--){ CZI66pDy  
if(data[j] SortUtil.swap(data,j,j-1); ],a5)kV  
} jesGV<`?l  
} 0dh aAq`k  
} T iiWp!mX  
} LS*y  
&wCg\j_c  
} 2Kyl/C,  
q):5JXql~  
选择排序: =~H<Z LE+  
h+&OQ%e=8  
package org.rut.util.algorithm.support; /%TI??PGu  
d0Qd$ .%A  
import org.rut.util.algorithm.SortUtil; 78# v  
Ksj -zR;  
/** HxK80mJ  
* @author treeroot \BZhf?9U  
* @since 2006-2-2 @u]rWVy;\[  
* @version 1.0 P} SCF  
*/ | >27 B  
public class SelectionSort implements SortUtil.Sort { FrYqaP  
.=;3d~.]  
/* /1Q(b  
* (non-Javadoc) YSh+pr  
* )V6Hl@v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /! $c/QZ  
*/ 7/f3Z 1g  
public void sort(int[] data) { f[a}aZ9)  
int temp; /bi[ e9R  
for (int i = 0; i < data.length; i++) { o .G!7  
int lowIndex = i; }\#Rot>Y  
for (int j = data.length - 1; j > i; j--) { db6b-Y{   
if (data[j] < data[lowIndex]) { 5b[jRj6  
lowIndex = j; s4SG[w!d  
} -}=%/|\FG  
} vbBc}G"w  
SortUtil.swap(data,i,lowIndex); +W\f(/q0  
} 4 G-wd  
} aL%AQB,  
"a1n_>#Fb  
} JSW}*HR  
i2(1ki/|O  
Shell排序:  %. ,=maA  
<$~mE9a6  
package org.rut.util.algorithm.support; yo )%J  
5v}8org  
import org.rut.util.algorithm.SortUtil; :1^R9yWA4  
&n?^$LTPY  
/** : b~6i%b  
* @author treeroot M9@ri^x  
* @since 2006-2-2 rKf-+6Na  
* @version 1.0 *"n vX2iz  
*/ /)(#{i*  
public class ShellSort implements SortUtil.Sort{ I_rO!  
 <**y !2  
/* (non-Javadoc) a@*S+3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p2udm!)J  
*/ qt 2d\f  
public void sort(int[] data) { y2vUthRwo  
for(int i=data.length/2;i>2;i/=2){ WjwLM2<nK7  
for(int j=0;j insertSort(data,j,i); iN0nw]_*  
} nMvKTH  
} zs*L~_K  
insertSort(data,0,1); q^L<X)  
} Za8#$`zq  
mAW, ?h  
/** hq/k*;  
* @param data hk;7:G  
* @param j eT8}  
* @param i "=za??\K}  
*/ >Ll$p 0W  
private void insertSort(int[] data, int start, int inc) { | j a-  
int temp; 9*=W-v  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >P $;79<  
} 2hQ>:  
}  \qR %%S  
} H0R&2#YD  
YxinE`u~  
} 3LTcEd  
z)=+ F]  
快速排序: B8%{}[q  
P#/HTu5q7  
package org.rut.util.algorithm.support; -,{-bi  
dwv6;x  
import org.rut.util.algorithm.SortUtil; m7GR[MR  
n?urE-_  
/** /q$,'^.A  
* @author treeroot #I3$3^0i#  
* @since 2006-2-2 F0UVo  
* @version 1.0 ^F"iP7   
*/ h"[+)q%L  
public class QuickSort implements SortUtil.Sort{ Pv+5K*"7Cg  
~w;]c_{.b  
/* (non-Javadoc) 'vaLUy9]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D\YE^8/  
*/ .ol'.t ,S  
public void sort(int[] data) { |s)?cpb  
quickSort(data,0,data.length-1); 2{.QjYw^  
} ^p/Ob'!  
private void quickSort(int[] data,int i,int j){ b4""|P?L  
int pivotIndex=(i+j)/2; @Ehn(}  
file://swap 3u\;j; Td!  
SortUtil.swap(data,pivotIndex,j); KB!|B.ChN(  
!;!~n`  
int k=partition(data,i-1,j,data[j]); FHPXu59u  
SortUtil.swap(data,k,j); b]JI@=s?  
if((k-i)>1) quickSort(data,i,k-1); 7 #=}:3c  
if((j-k)>1) quickSort(data,k+1,j); xlR2|4|8  
lw(e3j  
} X5*C+ I=2  
/** 0G2g4DSKD  
* @param data rqlc2m,<-p  
* @param i >u(>aV|A  
* @param j Q9`QL3LQD  
* @return z>[tF5  
*/  X}6#II  
private int partition(int[] data, int l, int r,int pivot) { ?n\*,{9  
do{ n!E2_  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :9|W#d{o  
SortUtil.swap(data,l,r); =)OC|?9 C\  
} )P>u9=?,=E  
while(l SortUtil.swap(data,l,r); RP`2)/sMT  
return l; m2Uc>S  
} ozr9>b>M  
]fI/(e_U  
} 'iLH `WE  
&wetzC )  
改进后的快速排序: S2VVv$r_6  
O8N[Jl  
package org.rut.util.algorithm.support; 9%iFV N'  
s Fgadz6O  
import org.rut.util.algorithm.SortUtil; qYp$fmj  
oT|m1aGE  
/** wn11\j&  
* @author treeroot Kt.~aaG_  
* @since 2006-2-2 vVs#^"-nW  
* @version 1.0 Y+/l X6'  
*/ zG c[Z3N  
public class ImprovedQuickSort implements SortUtil.Sort { <Jp1A# %p  
^Dx#7bsDZR  
private static int MAX_STACK_SIZE=4096; 7XyOB+aQO  
private static int THRESHOLD=10; ER{3,0U  
/* (non-Javadoc) O hR1Jaed  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *,\` o~  
*/ ZZ)G5ji  
public void sort(int[] data) { Ca$c;  
int[] stack=new int[MAX_STACK_SIZE]; 3An(jt$%Q  
BZ F,=v  
int top=-1; 8Xm@r#Oy5  
int pivot; S9Yt1qb  
int pivotIndex,l,r; )8{6+{5lu  
?Cci:Lin  
stack[++top]=0; M>_= "atI  
stack[++top]=data.length-1; /4joC9\AB  
hPufzhT  
while(top>0){ Ws49ImCB  
int j=stack[top--]; ur2!#bU9  
int i=stack[top--]; }&G]0hCT!  
S@:B6](D$  
pivotIndex=(i+j)/2; 5z]\$=TE  
pivot=data[pivotIndex]; L=7rDW)aa  
GF R!n1Hv  
SortUtil.swap(data,pivotIndex,j); b4~H3|  
+(ny|r[#  
file://partition "r-l8r,  
l=i-1; $ly0h W  
r=j; A'DVJ9%xB  
do{ )DZTB  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); XU#,Bu{  
SortUtil.swap(data,l,r); :k1$g+(lP  
} z/vDgH!s  
while(l SortUtil.swap(data,l,r); ULvVD6RQ47  
SortUtil.swap(data,l,j); M j~${vj  
BQ#jwu0e  
if((l-i)>THRESHOLD){ {Nq?#%vdT  
stack[++top]=i; oO:LG%q  
stack[++top]=l-1; ~R!gJTO9  
} ?0npEz|  
if((j-l)>THRESHOLD){ $GF&x>]]  
stack[++top]=l+1; W#45a.v  
stack[++top]=j; mG}k 3e-  
} A[ 1)!e  
d[U1.SNL  
} WTu{,Q  
file://new InsertSort().sort(data); WOH9%xv  
insertSort(data); |!5@xs*T  
} n^6TP'r  
/** N<b D  
* @param data Th+|*=Il  
*/ dP3VJ3+ %  
private void insertSort(int[] data) { e3rfXhp  
int temp; .jum "va%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y\>\[*.v  
} #wD7 \X-f  
} X)NWX9^;'  
} y7; 5xF?q  
\I xzdFF#  
} eH `t \n  
| /#'S&!U  
归并排序: s'AQUUrb <  
dAwS<5!  
package org.rut.util.algorithm.support; n% U9iwJ.  
+cw{aI`a8  
import org.rut.util.algorithm.SortUtil; Y(W{Jd+  
Ebbe=4  
/** *e,CDV  
* @author treeroot ujNt(7Cz  
* @since 2006-2-2 Wb'*lT0=  
* @version 1.0 /W``LK>;?  
*/ gx#J%k,f  
public class MergeSort implements SortUtil.Sort{ l^BEFk;  
.^GFy   
/* (non-Javadoc) r"1A`89  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )PHl>0i!  
*/ K9LEIby  
public void sort(int[] data) { $;ch82UiX  
int[] temp=new int[data.length]; ]uJM6QuQ  
mergeSort(data,temp,0,data.length-1); <f[9ju  
} $TFTIk*uU  
>5df@_'  
private void mergeSort(int[] data,int[] temp,int l,int r){ tc5M$b3^2  
int mid=(l+r)/2; F1/6&u9I  
if(l==r) return ; frk7^5  
mergeSort(data,temp,l,mid); Y<de9Z@  
mergeSort(data,temp,mid+1,r); ]C+eJ0"A  
for(int i=l;i<=r;i++){ !OV|I  
temp=data; q^u6f?B  
} %{=4Fa(Jux  
int i1=l; -fhAtxkg  
int i2=mid+1; _dz +2au  
for(int cur=l;cur<=r;cur++){ fHW-Je7mG  
if(i1==mid+1) rK*hTjVn  
data[cur]=temp[i2++]; a\.//?  
else if(i2>r) (=6P]~,  
data[cur]=temp[i1++]; g2!0vB>  
else if(temp[i1] data[cur]=temp[i1++]; bbM4A! N  
else Cl%V^xTb  
data[cur]=temp[i2++]; UU*0dSWr  
} >9<_s ^_  
} k0gJ('zah  
Bb$S^F(Xq  
} F%w\D9+P  
,P;8 }yQ  
改进后的归并排序: r[Zg 2  
R:SIs\%o  
package org.rut.util.algorithm.support; 1x^W'n,HtK  
Ky =(urAd  
import org.rut.util.algorithm.SortUtil; E!r4AjaC  
O@G<B8U,K  
/** :-W$PIBe  
* @author treeroot *g}vT8w'}  
* @since 2006-2-2 [~zE,!  
* @version 1.0 s0x@ u  
*/ M'pY-/.  
public class ImprovedMergeSort implements SortUtil.Sort { @^w!% ?J  
R4hav  
private static final int THRESHOLD = 10; !pE>O-| K  
eh8<?(eK  
/* nS?S6G5h  
* (non-Javadoc) %Z-TbOX  
* s?1-$|*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &utS\-;G  
*/ ua6*zop  
public void sort(int[] data) { n^g-`  
int[] temp=new int[data.length]; ~:'gvR;x  
mergeSort(data,temp,0,data.length-1); %3#b6m~  
} > 2!^ dT^D  
s.k`];wo  
private void mergeSort(int[] data, int[] temp, int l, int r) { P,s)2s'nZ  
int i, j, k; %'K+$  
int mid = (l + r) / 2; gK]T}  
if (l == r) &q"uy:Rd  
return; r zc 3k~@  
if ((mid - l) >= THRESHOLD) '6Rs0__  
mergeSort(data, temp, l, mid); ,cl"1>lp  
else b*$o[wO9  
insertSort(data, l, mid - l + 1); z^SN#v$  
if ((r - mid) > THRESHOLD) O~c+$(  
mergeSort(data, temp, mid + 1, r); (RI>aDG RH  
else r&LCoe'\{i  
insertSort(data, mid + 1, r - mid); P^o"PKA  
|iF1 A  
for (i = l; i <= mid; i++) { t 's5~  
temp = data; \dQ2[Ek  
} 'h+4zvI"8  
for (j = 1; j <= r - mid; j++) { *1;L,*J"|  
temp[r - j + 1] = data[j + mid]; fitK2d   
} v@<lEG#$"|  
int a = temp[l]; 's%ct}y\J  
int b = temp[r]; o 2$<>1^  
for (i = l, j = r, k = l; k <= r; k++) { 8?]%Q i   
if (a < b) { LXOF{FG  
data[k] = temp[i++]; kB!M[[t  
a = temp; 5,I*F9[3  
} else { '!2  
data[k] = temp[j--]; :5qqu{GL  
b = temp[j]; b~N|DKj  
} vzgudxG'z  
} CH|g   
} .(.G`aKnF  
34&$_0zn  
/** TBLk+AR  
* @param data I "+|cFq.  
* @param l @a{v>)  
* @param i ::h02,y;1%  
*/ ,_7tRkn  
private void insertSort(int[] data, int start, int len) { +[go7A$5  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); E t[QcB3  
} qy0_1xT-  
} ob()+p.kK  
} P+ h<{%:*  
} iH -x  
(]# JpQ  
堆排序: g\mrRZ/?  
8`R}L  
package org.rut.util.algorithm.support; fCo2".Tk  
OEqe^``!  
import org.rut.util.algorithm.SortUtil; Vu8-Cy>Q?  
&-. eu  
/** ri_6 wbPp  
* @author treeroot MjeI?k}LJ  
* @since 2006-2-2 ^i,0n}>  
* @version 1.0 )^a#Xn3z  
*/ [,V92-s;N  
public class HeapSort implements SortUtil.Sort{ _-2n3py  
DT~y^h  
/* (non-Javadoc) _ O71r}4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y8 u)Q  
*/ Z` Eb L  
public void sort(int[] data) { Rhxm)5+  
MaxHeap h=new MaxHeap(); i /U{dzZ  
h.init(data); Bd]DhPhJ  
for(int i=0;i h.remove(); ^oZs&+z  
System.arraycopy(h.queue,1,data,0,data.length); 9YsO+7[  
} `e69kBAm  
~5?n&pF  
private static class MaxHeap{ z.F+$6  
PL2Q!i`[o  
void init(int[] data){ * =N 6_  
this.queue=new int[data.length+1]; YQd&rkr  
for(int i=0;i queue[++size]=data; A>,fG9pR  
fixUp(size); ,,-3p#P bw  
} [t\Mu}b  
} m<HjL  
NjMLq|X  
private int size=0; -5*;J&.  
X-^Oz@.>  
private int[] queue; xqZ%c/I3q  
qMj e,Y  
public int get() { 43]&SXprH  
return queue[1]; #SUq.A  
} O&RHCR-\  
@WE$%dr  
public void remove() { /JY i^rZ  
SortUtil.swap(queue,1,size--); /{} ]Hu  
fixDown(1); U} h |Zk  
} _!Q\Xn  
file://fixdown gVWLY;c 3}  
private void fixDown(int k) { U9OF0=g  
int j; pAL-P l9z  
while ((j = k << 1) <= size) { FCAu%lvZT  
if (j < size %26amp;%26amp; queue[j] j++; N%i<DsK.u6  
if (queue[k]>queue[j]) file://不用交换 No+zw%l0E  
break; =l_"M  
SortUtil.swap(queue,j,k); O&%T_Zk@@  
k = j; jC7XdYp  
} tq93 2M4  
} 5qko`r@#  
private void fixUp(int k) { PUo&>  
while (k > 1) { 6g&nnA  
int j = k >> 1; 4x >e7Kf  
if (queue[j]>queue[k]) ~+ur*3X  
break; hidweg*7  
SortUtil.swap(queue,j,k); arrcHf 4O  
k = j; 7 4UE-H)  
} nwVtfsb  
} ?Fw/c0  
#$QY[rf=6  
} r}bKVne  
ShxX[k  
} ;I' ["k%  
rKq]zHgpo  
SortUtil: dy'?@Lj;  
_FgeE`X  
package org.rut.util.algorithm; .? / J  
i{0_}"B  
import org.rut.util.algorithm.support.BubbleSort; omu&:) g  
import org.rut.util.algorithm.support.HeapSort; W=:+f)D  
import org.rut.util.algorithm.support.ImprovedMergeSort; 64@s|m*  
import org.rut.util.algorithm.support.ImprovedQuickSort; c^%k1pae(  
import org.rut.util.algorithm.support.InsertSort; >kT~X ,o  
import org.rut.util.algorithm.support.MergeSort; [5-5tipvWp  
import org.rut.util.algorithm.support.QuickSort; b*i+uV?  
import org.rut.util.algorithm.support.SelectionSort; r G6/h'!|  
import org.rut.util.algorithm.support.ShellSort; MN4}y5  
`}l%Am  
/** v2Y=vr  
* @author treeroot B*7o\~5  
* @since 2006-2-2 xOlkG*3c  
* @version 1.0 |Rc#Q<Vh|  
*/ PHkvt!uH  
public class SortUtil { 5[k35 c{  
public final static int INSERT = 1; )ej8vm  
public final static int BUBBLE = 2; xh$[E&2u  
public final static int SELECTION = 3; w.\:I[  
public final static int SHELL = 4; o-_ a0j  
public final static int QUICK = 5; fz*6 B NJ  
public final static int IMPROVED_QUICK = 6; hv6>3gbr  
public final static int MERGE = 7; 8*X8U:.0o  
public final static int IMPROVED_MERGE = 8; %qMk&1  
public final static int HEAP = 9; ;Xns9  
J4 <*KL~a  
public static void sort(int[] data) { ]Az >W*Y  
sort(data, IMPROVED_QUICK); `4MPXfoBL  
} Y9N:%[ :>W  
private static String[] name={ 9^n ]qg^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" t@\0$V \X  
}; cl:YN]BK  
OB%y'mo7]  
private static Sort[] impl=new Sort[]{ ?(z3/ "g]  
new InsertSort(), U\N`[k.F  
new BubbleSort(), ?QgWW  
new SelectionSort(), o,L!F`W  
new ShellSort(), '@FKgy;B)-  
new QuickSort(), ZyG528O22  
new ImprovedQuickSort(), IaB A2  
new MergeSort(), O;~1M3Ii  
new ImprovedMergeSort(), 1<*-, f  
new HeapSort() DIY WFVh  
}; N^ )OlH  
GZ"O%: d  
public static String toString(int algorithm){ X!m/I i$q  
return name[algorithm-1]; 4D8q Gti  
} ;]gph)2cd  
+J2=\YO  
public static void sort(int[] data, int algorithm) { VH/_0  
impl[algorithm-1].sort(data); lH[N*9G(  
} WE3l*7<@  
vCJjZ%eO%D  
public static interface Sort { ^U52 *6  
public void sort(int[] data); U;_ ;_  
} p8Pvctc  
Gh j[nsoC~  
public static void swap(int[] data, int i, int j) { B,676~I  
int temp = data; MDRSI g  
data = data[j]; d(tq;2-  
data[j] = temp; hod|o1C&  
} q o'1Pknz  
} -C\m' T,1  
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