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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。 /_,} o7@t~  
插入排序: te+5@k#t  
iN}BMd.U  
package org.rut.util.algorithm.support; <_|H]^o  
bnWKfz5  
import org.rut.util.algorithm.SortUtil; `Al[gG?/!  
/** .)wj{(>TJ  
* @author treeroot /)ubyl]^p  
* @since 2006-2-2 $B iG7,[#  
* @version 1.0 jgr2qSU C  
*/ >VAZ^kgi  
public class InsertSort implements SortUtil.Sort{ \sy;ca)[6g  
Z~Mq5#3F  
/* (non-Javadoc) Q~'a1R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LqHeLN  
*/ aoZ`C3  
public void sort(int[] data) { ?Z<2zm%qV  
int temp; R.g'&_zx  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kt";Jx  
} |sw&sfH[FD  
} AR}M*sSh  
} `B`/8Cvg  
:*2+t-  
} l; e&p${P  
>e4  
冒泡排序: {d;eZt `  
,]N!I%SI  
package org.rut.util.algorithm.support; SZ9xj^"g  
`;^%t  
import org.rut.util.algorithm.SortUtil; @UO=)PxN3  
Z {ntF  
/** Cf_Ik  
* @author treeroot PAe2 hJ  
* @since 2006-2-2 zN\~v  
* @version 1.0 NRS!Ox  
*/ @"~Mglgw  
public class BubbleSort implements SortUtil.Sort{ %qzpt{'?<  
u+]v. Mt  
/* (non-Javadoc) |wf:|%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zS:89y<  
*/ lPS A  
public void sort(int[] data) { t9&z|?Vz  
int temp; E(T6s^8  
for(int i=0;i for(int j=data.length-1;j>i;j--){ xNNoB/DR  
if(data[j] SortUtil.swap(data,j,j-1); ta+'*@V +G  
} M} IRagm  
} 6'Sc=;;:  
} Po[u6K2&  
} tUmI#.v   
b8 J\Lm|J  
} 6,'!z ?d%  
@=c{GAj  
选择排序: ?lxI& h  
eiZv|?^0  
package org.rut.util.algorithm.support; auP:r  
i3.8m=>  
import org.rut.util.algorithm.SortUtil; [Cz.K?+#M  
~Exd_c9  
/** KJa?TwnC  
* @author treeroot ?ng?>!  
* @since 2006-2-2 7"f$;CN?~  
* @version 1.0 `07u}]d8  
*/ VI%879Z\e  
public class SelectionSort implements SortUtil.Sort { /Q"nQSG  
M* W=v  
/* p[e|N;W8A  
* (non-Javadoc) +w/Ax[K  
* Ep}KIBBO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O.=~/!(  
*/ {6<7M  
public void sort(int[] data) { )o[ O%b  
int temp; yI9l*'  
for (int i = 0; i < data.length; i++) { vi6EI wZG  
int lowIndex = i; A.vcE  
for (int j = data.length - 1; j > i; j--) { {KL<Hx2M  
if (data[j] < data[lowIndex]) { &Ko}Pv  
lowIndex = j; 1fL@rR  
} FTt7o'U  
} DR9M8E  
SortUtil.swap(data,i,lowIndex); M[_~7~4  
} xIF z@9+k  
} RlX;c!K  
jh]wHG  
} OgrUP  
;T6^cS{Gj  
Shell排序: v,RLN`CID  
2 c'=^0:  
package org.rut.util.algorithm.support; ^h^2='p  
+byw*Kk  
import org.rut.util.algorithm.SortUtil; !23W=N}82  
}i/&m&VU  
/** F|V_i C+  
* @author treeroot +D4Nu+~BSN  
* @since 2006-2-2 w\_NrsO!x  
* @version 1.0 3WJ> T1we  
*/ eEn_aX  
public class ShellSort implements SortUtil.Sort{ |Xd[%W)  
5v~Y>  
/* (non-Javadoc) $'X*L e@k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tZa)sbz  
*/ B>o\;)l3O  
public void sort(int[] data) { vD) LRO Z  
for(int i=data.length/2;i>2;i/=2){ v%&f00  
for(int j=0;j insertSort(data,j,i); 1q~U3'l:$  
} !j4C:L3F  
} "JVz v U]  
insertSort(data,0,1); 5%?La`C9[  
} P,iLqat  
)X\.Xr-6q  
/** 5DyN=[b  
* @param data c ~YD|l  
* @param j *^c4q|G.-  
* @param i v !@/  
*/ ItKwB+my  
private void insertSort(int[] data, int start, int inc) { 1elcP`N1  
int temp; ]qXHalHY  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); FTCp3g  
} -ihF)^"a  
} Lj(hk @  
} )dF(5,y)  
A>>@&c:(  
} ]02 l!"  
R_vZh|  
快速排序: ) 0AE*S  
'QT(TF>  
package org.rut.util.algorithm.support; =JO|m5z8>  
4g\a$7 r  
import org.rut.util.algorithm.SortUtil; ]vQo^nOo  
PBn(k>=+  
/** r=L9x/r  
* @author treeroot qR]4m]o  
* @since 2006-2-2 B[4y(Im  
* @version 1.0 $'9r=#EH  
*/ DGHX:Ft#  
public class QuickSort implements SortUtil.Sort{ 83i%3[L  
W %R h2l  
/* (non-Javadoc) ~8pf.^,fi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QJdSNkc6  
*/ _5U Fml9  
public void sort(int[] data) { @dCu]0oNI  
quickSort(data,0,data.length-1); ^#3$C?d  
} gyCb\y+\a  
private void quickSort(int[] data,int i,int j){ $o]zNW;X  
int pivotIndex=(i+j)/2; ^ ?tAt3dMI  
file://swap mkE*.I0=  
SortUtil.swap(data,pivotIndex,j); IH~H6US  
2z0HB+Y}x  
int k=partition(data,i-1,j,data[j]); (m04Z2#  
SortUtil.swap(data,k,j); &p ;};n  
if((k-i)>1) quickSort(data,i,k-1); jcq(=7j  
if((j-k)>1) quickSort(data,k+1,j); :jp?FF^j;  
?783LBe  
} hD >:WJ  
/** wmo'Pl  
* @param data  QV .A.DK  
* @param i &@+K%qW[e  
* @param j gP( -Op  
* @return ^Y'J0v2  
*/ RX2= iO"  
private int partition(int[] data, int l, int r,int pivot) { "bf8[D  
do{ n+Ag |.,|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ac7`nvI=  
SortUtil.swap(data,l,r); "E''ZBLO~  
} V'K$:9^x[8  
while(l SortUtil.swap(data,l,r); P< WD_W  
return l; G~B V^  
} >P0AGZ  
]NFDE-Jz]  
} Gzp)OHgJ  
&-b=gnT   
改进后的快速排序: -|)[s[T~m  
uqQMS&;+,|  
package org.rut.util.algorithm.support; JyB>,t)  
bLV@Ts  
import org.rut.util.algorithm.SortUtil; <q[ *kr  
'E&K%/d  
/** ~-:CN(U  
* @author treeroot &PgdCijGq;  
* @since 2006-2-2 {eZ j[*P  
* @version 1.0 #[KwR\b{:+  
*/ ok6e=c '  
public class ImprovedQuickSort implements SortUtil.Sort { :T{or-  
/XMmE  
private static int MAX_STACK_SIZE=4096; GrQl3 Xi  
private static int THRESHOLD=10; /pk; E$qv  
/* (non-Javadoc) jQ^Ib]"K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HJcZ~5jf  
*/ SD.ze(P  
public void sort(int[] data) { OT *W]f  
int[] stack=new int[MAX_STACK_SIZE]; /Hx0=I  
w`7l ;7[  
int top=-1; =~0XdS/1  
int pivot; YD+C1*c!  
int pivotIndex,l,r; O,OGq0c  
[ThzLk#m  
stack[++top]=0; bs`/k&'  
stack[++top]=data.length-1; .86..1  
A.h?#%TLL  
while(top>0){ @B^'W'&C  
int j=stack[top--]; ]yIy~V  
int i=stack[top--]; <.v6w*+{/  
n9J>yud|  
pivotIndex=(i+j)/2; ^Q OvK>W<  
pivot=data[pivotIndex]; FN,uD:a  
V3+%KkN  
SortUtil.swap(data,pivotIndex,j); '~2v/[<`}  
|1<Z3\+_/  
file://partition ttKfZ0  
l=i-1; #-f^;=7  
r=j; 5-3gsy/Mo  
do{ i,<-+L$z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); U)PumU+z$u  
SortUtil.swap(data,l,r); 0Gs]>B4r/  
} _0f[.vN  
while(l SortUtil.swap(data,l,r); <n:?WP~U  
SortUtil.swap(data,l,j); \c\=S  
Z0:BXtW  
if((l-i)>THRESHOLD){ Grub1=6l  
stack[++top]=i; 0jzA\$oD  
stack[++top]=l-1; ]e3nnS1*.  
} |kd^]! _  
if((j-l)>THRESHOLD){ <qy+@t  
stack[++top]=l+1; .iS]aJJ  
stack[++top]=j; [T^6Kzz  
} W&Hf}q s  
jCl[!L5/1  
} ^\6UTnS.  
file://new InsertSort().sort(data); TSk6Q'L\v  
insertSort(data); i :$g1  
} .) GVb<w  
/** ( 0h]<7  
* @param data i~9)Hz;!  
*/ > @%!r  
private void insertSort(int[] data) { x('yBf  
int temp; l^"G\ZVI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); tp]|/cx4  
} =@z"k'Vl`  
} pqr" x2=.  
} a&[nVu+  
I|5OCTu  
} onlyvH4  
\*N1i`99  
归并排序: =e+go ]87x  
[K KoEZ  
package org.rut.util.algorithm.support; `Qhh{  
p(8\w-6  
import org.rut.util.algorithm.SortUtil; :Rn9rdX  
xle29:?l  
/** wf4Q}l2,d  
* @author treeroot F)IP~BE-k  
* @since 2006-2-2 OG+$F  
* @version 1.0 5e LPn  
*/ DIRCP=5  
public class MergeSort implements SortUtil.Sort{ 4jW{IGW  
*Tlv'E.M  
/* (non-Javadoc) 72 6y/o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8xX{y#  
*/ 40E[cGz$*  
public void sort(int[] data) { neBkwXF!  
int[] temp=new int[data.length]; <*+ MBF  
mergeSort(data,temp,0,data.length-1); ivq4/Y] -X  
} <b\urtoJ  
MI}D%n*  
private void mergeSort(int[] data,int[] temp,int l,int r){ qSd $$L^  
int mid=(l+r)/2; t|m3b~Oyv  
if(l==r) return ; r:cUAe7#  
mergeSort(data,temp,l,mid); 1:t>}[Y  
mergeSort(data,temp,mid+1,r); m+=!Z|K  
for(int i=l;i<=r;i++){ S`G\Cd;5  
temp=data; xpk|?/6  
} {;zPW!G  
int i1=l; k y98/6  
int i2=mid+1; c>SeOnf  
for(int cur=l;cur<=r;cur++){ ;GAYcVB  
if(i1==mid+1) 2$91+N*w9  
data[cur]=temp[i2++]; 1rEP)66N  
else if(i2>r) +9X[gef8  
data[cur]=temp[i1++]; AL0Rn e N  
else if(temp[i1] data[cur]=temp[i1++]; Fk(5y)  
else [;I8ZVE  
data[cur]=temp[i2++]; gg(U}L ]:  
} #<o#kJL  
} ht |r+v-  
>`:+d'Jv0  
} 63HkN4D4  
{E/TC%  
改进后的归并排序: ob{pQx7  
^XM;D/Gp~  
package org.rut.util.algorithm.support; ]`prDw'  
1GdD  
import org.rut.util.algorithm.SortUtil; Q Y'-]  
lu_Gr=#O  
/** 5o/rV.I  
* @author treeroot : [y(<TLw  
* @since 2006-2-2 m"R(_E5  
* @version 1.0 g8Z14'Ke  
*/ 8##jd[o&p~  
public class ImprovedMergeSort implements SortUtil.Sort { ^U}0D^jDeE  
o[#a}5Y  
private static final int THRESHOLD = 10; z"3c+?2  
(zBQ^97]  
/* ={^#E?  
* (non-Javadoc) oK6lCGM5  
* tOw 0(-:iq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S2)S/ nf  
*/ _LNPB$P  
public void sort(int[] data) { %j@FZ )a[  
int[] temp=new int[data.length]; ^&iV%vQ[  
mergeSort(data,temp,0,data.length-1); jvQ"cs$.  
} }H=OVbQor  
">3@<f>  
private void mergeSort(int[] data, int[] temp, int l, int r) { +0Gep}&z.  
int i, j, k; Kcl$|T  
int mid = (l + r) / 2; a"}#HvB+  
if (l == r) AX+d?M  
return; ''uI+>Y  
if ((mid - l) >= THRESHOLD) ~\ f^L?m  
mergeSort(data, temp, l, mid); UsN b&aue  
else i1\2lh$  
insertSort(data, l, mid - l + 1); BvF_9  
if ((r - mid) > THRESHOLD) #=(op?]  
mergeSort(data, temp, mid + 1, r); Ef.4.iDJrR  
else fXe-U='  
insertSort(data, mid + 1, r - mid); ak `)>  
"N]o5d   
for (i = l; i <= mid; i++) { wVDB?gy%#  
temp = data; : qRT9n$  
} P~e$iBH'  
for (j = 1; j <= r - mid; j++) { dU6LB+A  
temp[r - j + 1] = data[j + mid]; LltguNM$  
} pm\X*t}L  
int a = temp[l]; }eM<A$J  
int b = temp[r]; or}*tSKX  
for (i = l, j = r, k = l; k <= r; k++) { de9l;zF  
if (a < b) { |`wsKr'  
data[k] = temp[i++]; 7-I>5 3@  
a = temp; j_@3a)[NY  
} else { K/`RZ!  
data[k] = temp[j--]; z :v, Vu  
b = temp[j]; v Lv@Mo  
} OL5HofgNm  
} )H)Udhz  
} 9^ p{/Io  
|+-i'N9  
/** % Au$E&sj  
* @param data aa8Qs lm  
* @param l bK\WdG\;  
* @param i y PYJc  
*/ ?4e6w  
private void insertSort(int[] data, int start, int len) { #Hi]&)p_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @BUqQ9q:  
} AijTT%  
} $?AA"Nz  
} A(OfG&!  
} }Xj_Y]T  
d~-p;i  
堆排序: *)1Vs'!-  
'%C.([  
package org.rut.util.algorithm.support; 4UjE*Aq  
g)qnjeSs]  
import org.rut.util.algorithm.SortUtil; ^85n9a?8  
8zDH<Gb  
/** ApYud?0b  
* @author treeroot x ;,xd  
* @since 2006-2-2 F LI8r:  
* @version 1.0 p''"E$B/(  
*/ +\GZ(!~  
public class HeapSort implements SortUtil.Sort{ lk1Gs{(qhH  
@B[Cc`IN"  
/* (non-Javadoc) l/zC##1+.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ) Zo_6%  
*/ 9,f<Nb(\  
public void sort(int[] data) { 7G(f1Y  
MaxHeap h=new MaxHeap(); V}fKV6 v9  
h.init(data); > ' 0 ][~  
for(int i=0;i h.remove(); 6h6?BQSE  
System.arraycopy(h.queue,1,data,0,data.length); F(9 Y/UXH  
} .*-w UBr  
_iJXp0g  
private static class MaxHeap{ :dIQV(iW  
'z}M[h K]  
void init(int[] data){ 68<Z\WP  
this.queue=new int[data.length+1]; =yX&p:-&  
for(int i=0;i queue[++size]=data; r>~d[,^$m4  
fixUp(size); V!77YFen %  
} Y%:0|utQC  
} in #]3QGV  
m+2`"1IE[  
private int size=0; 4bev* [k  
aT:AxYn8  
private int[] queue; Yz-JI=  
Fra>|;do  
public int get() { x X/s1(P  
return queue[1]; IAF;mv}'  
} Secq^#]8  
xVkTRCh  
public void remove() { 5 k%9>U%$  
SortUtil.swap(queue,1,size--); S=H_9io  
fixDown(1); =lC;^&D-0/  
} hMeqs+  
file://fixdown h@;)dLo0z  
private void fixDown(int k) { 1i/::4=  
int j; nt0\q'&  
while ((j = k << 1) <= size) { T<+ht8&M8  
if (j < size %26amp;%26amp; queue[j] j++; I+"?,Ej$K  
if (queue[k]>queue[j]) file://不用交换 $.Q>M]xH  
break; N^ s!!Sbpq  
SortUtil.swap(queue,j,k); p&sK\   
k = j; VkDS&g~Ws  
} XQ 3*  
} 4Kn9*V  
private void fixUp(int k) { mvq7G  
while (k > 1) {  6Z&u  
int j = k >> 1; ]osx.  
if (queue[j]>queue[k]) ]TBtLU3  
break; o9Txo (tYU  
SortUtil.swap(queue,j,k); qwF*(pTHq  
k = j; Z@,PZ   
} WVWS7N\  
} n(1wdlEp  
3p3WDL7  
} 6`qr:.  
Q:kVCm/;  
} i&pJg1  
6b ]1d04hT  
SortUtil: UiR,^/8ED  
r%F(?gKXkd  
package org.rut.util.algorithm; _+\:OB[Y  
9 rTz N  
import org.rut.util.algorithm.support.BubbleSort; #~4{`]W6  
import org.rut.util.algorithm.support.HeapSort; Q^lQi\[  
import org.rut.util.algorithm.support.ImprovedMergeSort; <r<Dmn|\a  
import org.rut.util.algorithm.support.ImprovedQuickSort; dv'E:R(a  
import org.rut.util.algorithm.support.InsertSort; =@JS88+  
import org.rut.util.algorithm.support.MergeSort; n</k/Mk}  
import org.rut.util.algorithm.support.QuickSort; qcTmsMpj  
import org.rut.util.algorithm.support.SelectionSort; c.(Ud`jc  
import org.rut.util.algorithm.support.ShellSort; ZD)0P=%  
6Q2or n[  
/** ,2,SG/BB  
* @author treeroot XLZ j  
* @since 2006-2-2 B:?#l=FL  
* @version 1.0 df4sOqU  
*/ U=F-] lD  
public class SortUtil { 4|6&59?pnc  
public final static int INSERT = 1; tE]5@b,R  
public final static int BUBBLE = 2; Nmp>UE,7[  
public final static int SELECTION = 3; -@ZzG uS(  
public final static int SHELL = 4; )X~Pr?52?  
public final static int QUICK = 5; %j *k  
public final static int IMPROVED_QUICK = 6; *D?((_+  
public final static int MERGE = 7; [,<\RviI  
public final static int IMPROVED_MERGE = 8; (Ffb&GL  
public final static int HEAP = 9; `6Ureui2?  
)W8L91-  
public static void sort(int[] data) { @7@e`b?  
sort(data, IMPROVED_QUICK); W$" Y%^L  
} L\b]k,Ksf  
private static String[] name={ _%wK}eH+sy  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" -G],H)M  
}; gX@nPZjg  
psIkG0 &  
private static Sort[] impl=new Sort[]{ pbDw Lo]  
new InsertSort(), xH<'GB)  
new BubbleSort(), +{xMIl_  
new SelectionSort(), G{kj}>kS_  
new ShellSort(), ^:4L6  
new QuickSort(), D =r-  
new ImprovedQuickSort(), H>?:U]  
new MergeSort(), J>=1dCK  
new ImprovedMergeSort(), )=jT_?9b   
new HeapSort() 908ayfVI  
}; e'1 ^+*bU  
 Y*@|My`  
public static String toString(int algorithm){ 5v|H<wPp  
return name[algorithm-1]; })20Zld}a  
}  3L%WVCB  
iV?` i  
public static void sort(int[] data, int algorithm) { J`w]}GlH  
impl[algorithm-1].sort(data); T3PX gL)o  
} #)GW}U]X  
WP0 #i~3*  
public static interface Sort { la'e[t7  
public void sort(int[] data); Z#-k.|}  
} cz2,",+~  
\O kc5;kB2  
public static void swap(int[] data, int i, int j) { S dIGU[fm  
int temp = data; &/s~? Iq  
data = data[j]; \ V6   
data[j] = temp; }{ n\tzR  
} \Yj#2ww  
} g<fDY6jt  
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