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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。 =-q)I[4#  
插入排序: M)LdGN?$  
W5x]bl#  
package org.rut.util.algorithm.support; UGN. ]#"#  
jAJkCCG  
import org.rut.util.algorithm.SortUtil; iD]!PaFD`  
/** zO+nEsf^O  
* @author treeroot Z os~1N]3  
* @since 2006-2-2 =_UPZ]  
* @version 1.0 )0%<ZVB  
*/ V3m!dp]  
public class InsertSort implements SortUtil.Sort{ <e=0J8V8,i  
wWm#[f],?  
/* (non-Javadoc) vx ,yz+yP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |_ @iaLE  
*/ gVD!.  
public void sort(int[] data) { :4Y|%7[  
int temp; fDRQ(}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nBD7  
} 2?"9NQvz  
} q&N&n%rbm  
} x7*}4>|W,I  
+}1]8:>cq  
} '2 )d9_ w  
dE^'URBiA  
冒泡排序: epwXv|aSZ  
b"zq3$6*  
package org.rut.util.algorithm.support; w?/,LV  
 r>G$u  
import org.rut.util.algorithm.SortUtil; o2.! G  
MdyH/.Te  
/** :,7VqCh3@  
* @author treeroot /|\`NARI  
* @since 2006-2-2 =]^* -f}J9  
* @version 1.0 svQDSif  
*/ OI-%Ig%C#l  
public class BubbleSort implements SortUtil.Sort{ ,wFLOfV@  
<8y8^m`P9  
/* (non-Javadoc) 6[CX[=P30  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D ,)~j6OG8  
*/ [mwfgh&4%  
public void sort(int[] data) { p1&d@PF&&  
int temp; d_yqmx?w  
for(int i=0;i for(int j=data.length-1;j>i;j--){ bcZHFX  
if(data[j] SortUtil.swap(data,j,j-1); <h;P<4JX  
}  %"z W]  
} 4dy)g)wM  
} :wF(([&4p!  
} Gm|QOuw  
}tJ:-!*2  
} A1Zu^_y'  
ZWr\v!4  
选择排序: \"lzmxe0p  
Z c"]Cv(  
package org.rut.util.algorithm.support; 7_{x '#7  
+FJ o!~1  
import org.rut.util.algorithm.SortUtil; a;lCr|*  
> W0hrt?b  
/** ;j(xrPNb  
* @author treeroot "W1q}4_  
* @since 2006-2-2 =DqGm]tA  
* @version 1.0 cAL&>T  
*/ [oYe/<3  
public class SelectionSort implements SortUtil.Sort { \myj Y  
N-NwGD{  
/*  KL|B| u  
* (non-Javadoc) sX=!o})0  
* kg-%:;y.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SGbo|Xe7:  
*/ z1"UF4x*  
public void sort(int[] data) { 8C YJR/  
int temp; 4o|~KX8Qz  
for (int i = 0; i < data.length; i++) { $4L=Dg  
int lowIndex = i; Q;Oc# u  
for (int j = data.length - 1; j > i; j--) { 8ZahpB  
if (data[j] < data[lowIndex]) { {1qEN_ERx  
lowIndex = j; 5Ut0I]h|z  
} BkC(9[Ei  
} jb*#!m.l  
SortUtil.swap(data,i,lowIndex); m4%m0"Z  
} J=Jw"? f  
} Y>z(F\  
nbYaYL?&  
} {b+IDq`)=  
g_}@/5?y  
Shell排序: WpvH} l r}  
X!"y>J  
package org.rut.util.algorithm.support; :q= XE$%H  
,= PDL  
import org.rut.util.algorithm.SortUtil; Mc\lzq8\ 1  
&hF>}O  
/** mg 3jm  
* @author treeroot ~ PPGU1  
* @since 2006-2-2 '}}DPoV  
* @version 1.0 l@GpVdrv  
*/ @emZwN"m  
public class ShellSort implements SortUtil.Sort{ uD5i5,q1Hs  
, <[os  
/* (non-Javadoc) #VrT)po+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %ZxKN;  
*/ pjoI};  
public void sort(int[] data) { )zt5`"/o  
for(int i=data.length/2;i>2;i/=2){ aNwDMd^+  
for(int j=0;j insertSort(data,j,i); $iB(N ZV  
} q&wMp{  
} `SU;TN0  
insertSort(data,0,1); AHLDURv  
} !YoKKG~_0  
7eq;dNB@gq  
/** YvU#)M_h  
* @param data Oq.) 8E.  
* @param j x,V_P/?%  
* @param i & v`kyc  
*/ v(0vP}[Q7E  
private void insertSort(int[] data, int start, int inc) { pLIBNo?  
int temp;  ^@ux  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }cf-r>WaR  
} >0m-S :lk  
} .)o5o7H  
} 'IgtBd|K>  
a@X'oV`(2b  
} Kzmgy14o  
X31kHK5F_  
快速排序: "y`?KY$[N  
Wqqo8Y~fq  
package org.rut.util.algorithm.support; %W c-.E R  
EXzY4D ^  
import org.rut.util.algorithm.SortUtil; j^k{~]+_^]  
LQS*/s0  
/** mEqV&M1;7l  
* @author treeroot dxd}:L~z  
* @since 2006-2-2 y3xP~]n  
* @version 1.0 xq]&XlA:ug  
*/ Z BYmAD  
public class QuickSort implements SortUtil.Sort{ j9,X.?Xvx  
|)lo<}{  
/* (non-Javadoc) Tu"yoF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m760K*:i\  
*/ T&h|sa(   
public void sort(int[] data) { 'R$~U?i8  
quickSort(data,0,data.length-1); 0q3 :"X  
} <9Chkb|B  
private void quickSort(int[] data,int i,int j){ <ImeZ'L7  
int pivotIndex=(i+j)/2; qzG'Gz{{qu  
file://swap :')<|(Zy  
SortUtil.swap(data,pivotIndex,j); D?E5p.!A  
ZqhINM*Rm  
int k=partition(data,i-1,j,data[j]); Xu T|vh  
SortUtil.swap(data,k,j); ="4jk=on  
if((k-i)>1) quickSort(data,i,k-1); H#ihU3q  
if((j-k)>1) quickSort(data,k+1,j); ;P{ *'@  
4bKZ@r%  
} *zx;81X=  
/** v14[G@V~\  
* @param data x_Z~k  
* @param i :4A^~+J  
* @param j qR1ez-#K  
* @return q}8R>`Z{  
*/ ~!uK;hI  
private int partition(int[] data, int l, int r,int pivot) { fpqKa r  
do{ D/)xe:  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _Ih~'Y Fd  
SortUtil.swap(data,l,r); abK/!m[q  
} B^OhL!*tI  
while(l SortUtil.swap(data,l,r); fGxa~Unx  
return l; WT0U)x( m5  
} b :+ X3  
B>'\g O\2  
} `aUA_"f  
i ^W\YLE  
改进后的快速排序: .d*vfE$  
2{qoWys8[  
package org.rut.util.algorithm.support; aJfW75C  
ru U|  
import org.rut.util.algorithm.SortUtil; #8(@a Y  
ugL$W@   
/** rN*4Y  
* @author treeroot "44X'G8N  
* @since 2006-2-2 OU[Sm7B  
* @version 1.0 c2y5[L7?  
*/ xE}q(.]  
public class ImprovedQuickSort implements SortUtil.Sort { rVO+ vhih  
ClEtw   
private static int MAX_STACK_SIZE=4096; Io:xG6yG  
private static int THRESHOLD=10; N@) D,~  
/* (non-Javadoc) ei"FN3Rm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1b't"i M  
*/ y<gmp  
public void sort(int[] data) { 4iw+3 Q|  
int[] stack=new int[MAX_STACK_SIZE]; +[>m`XTq  
2qEy"DKu  
int top=-1; V^Nc0r   
int pivot; "B\qp"N  
int pivotIndex,l,r; l^SKd  
`yf#(YP  
stack[++top]=0; _LS=O@s^  
stack[++top]=data.length-1; 4}0s^>R  
a]Lr<i8#%  
while(top>0){ YlYTH_L>E  
int j=stack[top--]; )cvC9gt  
int i=stack[top--]; +Oxl1fDf  
P3:hGmk8|j  
pivotIndex=(i+j)/2; w</kGK[O  
pivot=data[pivotIndex]; S4\T (  
hxv/285B  
SortUtil.swap(data,pivotIndex,j); u=4tW:W,  
9SU;c l  
file://partition .qHgQ_%  
l=i-1; r..Rh9v/=E  
r=j; HWc=.Qq  
do{ uYs+x X_  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *f,EDSN1@d  
SortUtil.swap(data,l,r); +DU}f;O8v  
} 8J@REP4  
while(l SortUtil.swap(data,l,r); EJRwyF5 LK  
SortUtil.swap(data,l,j); F &uU ,);  
Va{`es)hky  
if((l-i)>THRESHOLD){ _kar5B$  
stack[++top]=i; 7wZKK0;T  
stack[++top]=l-1; ~UL; O\-b0  
} Q!@" Y/  
if((j-l)>THRESHOLD){ =XqmFr;h  
stack[++top]=l+1; d-c+ KV  
stack[++top]=j; 1c\$ziB  
} DSQ2z3s2  
,Z3.Le"  
} "d{ |_Cf  
file://new InsertSort().sort(data); C^ uXJ~8  
insertSort(data); pE`BB{[@  
} 05w_/l+  
/** p^^<BjkQ  
* @param data R@ihN?k  
*/ mH;\z;lyK  
private void insertSort(int[] data) { `i<U;?=0'  
int temp; <Nkj)`%5iK  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T[c ;},  
} eO*FoN  
} cm-! 6'`  
} "zYlddh  
%SIbpk%  
} _TkiI.'  
8?ZK^+]y  
归并排序: 1YQ|KJ*K  
>8QLo8)3C  
package org.rut.util.algorithm.support; t.3b\RV[  
k|&@xEbS  
import org.rut.util.algorithm.SortUtil; MvQ0"-ZQ  
tLLP2^_&  
/** pWeKN`  
* @author treeroot _O)~<Sk-*z  
* @since 2006-2-2 QKe=/;  
* @version 1.0 HD$W\P  
*/ {wK98>$a  
public class MergeSort implements SortUtil.Sort{ rry 33  
`2}Mz9mk  
/* (non-Javadoc) C?X^h{T p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q.~_vS%  
*/ Kc0KCBd8];  
public void sort(int[] data) { *Z<`TB)<X  
int[] temp=new int[data.length]; pYH#Vh  
mergeSort(data,temp,0,data.length-1); s_u@8e 6_  
} va| 1N/&  
LG@5Z-  
private void mergeSort(int[] data,int[] temp,int l,int r){ L%Me wU0TZ  
int mid=(l+r)/2; oS, %L  
if(l==r) return ; =M>pL+#  
mergeSort(data,temp,l,mid); F!'y47QD  
mergeSort(data,temp,mid+1,r); tpU[KR[-  
for(int i=l;i<=r;i++){ *i&ks> 4N  
temp=data; bF<FX_}!s!  
} <-FAF:6$@@  
int i1=l; r. :LZEr  
int i2=mid+1; +%oXPG?  
for(int cur=l;cur<=r;cur++){ ]~GwZB'M  
if(i1==mid+1) )}tI8  
data[cur]=temp[i2++]; oBpHmMzA  
else if(i2>r) 4Y;z46yM%  
data[cur]=temp[i1++]; iJT_*,P^  
else if(temp[i1] data[cur]=temp[i1++]; '0lX;z1  
else j0>Q:hn  
data[cur]=temp[i2++]; r_F\]68  
} %;~Vc{Xxt/  
} n~@;[=o?5  
P|l62!m<   
} I^emH+!MW  
I& DEF*  
改进后的归并排序: "sdzm%  
Ho2#'lSKM  
package org.rut.util.algorithm.support; &Y4S[-   
1pg&?L.MA  
import org.rut.util.algorithm.SortUtil; **N{XxdN  
krFuEaO  
/** `O5w M\Z  
* @author treeroot ]MKW5Kq  
* @since 2006-2-2 XShi[7  
* @version 1.0 AAb3Jf`UW  
*/ fp^{612O?  
public class ImprovedMergeSort implements SortUtil.Sort { &gR)Y3  
eVGO6 2|!  
private static final int THRESHOLD = 10; jb|al[p\  
EyO=M~nsS  
/* 5bKM}? =L  
* (non-Javadoc) $SQ UN*/>  
* F0(P 2j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >k }ea5+  
*/ rO[cm}  
public void sort(int[] data) { 9J+ p.N  
int[] temp=new int[data.length]; ~4fUaMT  
mergeSort(data,temp,0,data.length-1); ;SnpD)x@)  
} 4YX/=  
,1&Pb %}  
private void mergeSort(int[] data, int[] temp, int l, int r) { Pq u]?X  
int i, j, k; > mk>VM  
int mid = (l + r) / 2; mSdByT+dG  
if (l == r) :#7"SEud}  
return; 6?i]oy^X]p  
if ((mid - l) >= THRESHOLD) e ?sMOBPlv  
mergeSort(data, temp, l, mid); nvY%{Zf$}  
else \MI2^J N  
insertSort(data, l, mid - l + 1); j*Uz.q?  
if ((r - mid) > THRESHOLD) 69N/_V  
mergeSort(data, temp, mid + 1, r); X$BN &DD  
else o^+2%S`]  
insertSort(data, mid + 1, r - mid); 2@~.FBby7@  
![1+=F !  
for (i = l; i <= mid; i++) { 'o}v{f  
temp = data; P|j|0o,8p  
} Cw$0XyO  
for (j = 1; j <= r - mid; j++) { n/9.;9b$I  
temp[r - j + 1] = data[j + mid]; 1*U)\vK~  
} UI2TW)^2  
int a = temp[l]; /o L& <e  
int b = temp[r]; pW5ch"HE  
for (i = l, j = r, k = l; k <= r; k++) { #!?jxfsFa  
if (a < b) { H?oBax:  
data[k] = temp[i++]; *^ aEUp6&  
a = temp; h @AKfE!\~  
} else { )SU\s+"M  
data[k] = temp[j--]; hQ7-m.UZw  
b = temp[j]; 4*Uzomb?q  
} 4|U$ON?x  
} ! [3  /!  
} 5-*hAOThg  
qtrN=c3x  
/** nSy{ {d  
* @param data RISDjU3  
* @param l F+@/"1c  
* @param i {#`O'F>  
*/ Y8v13"P6  
private void insertSort(int[] data, int start, int len) { {=I:K|&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }uR[H2D`L  
}  B_Ul&V  
} H2kib4^i  
} z][hlDv\j  
} =M6Ph%  
\rj>T6  
堆排序: /aTW X  
{{6D4M|s  
package org.rut.util.algorithm.support; Kd r7 V  
;O`ZVB  
import org.rut.util.algorithm.SortUtil; atiyQuT6Wh  
h*>%ou   
/** 2]of 4  
* @author treeroot t| PQ4g<  
* @since 2006-2-2 ~7=eHU.@  
* @version 1.0 yE&WGpT  
*/ -.@dA'j[  
public class HeapSort implements SortUtil.Sort{ B%7Az!GX  
/ f5q9sp8  
/* (non-Javadoc) Iip%er%b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dl]pdg<  
*/ Y5{KtW  
public void sort(int[] data) { I=[Ir8} ;  
MaxHeap h=new MaxHeap(); 9| g]M:{  
h.init(data); 'GI| t  
for(int i=0;i h.remove(); l*>,K2F  
System.arraycopy(h.queue,1,data,0,data.length); s5/u>d  
} NiH =T  
hv0bs8h  
private static class MaxHeap{ 0Ra%>e(I^  
&t~NR$@  
void init(int[] data){ : E`78  
this.queue=new int[data.length+1]; 38GkV.e}$  
for(int i=0;i queue[++size]=data; #My14u  
fixUp(size); >^6|^rc  
} l|81_BC"  
} T095]*Hm  
^GpLl   
private int size=0; UY6aD~tD0  
2U|"]tpM&  
private int[] queue; 3q W](  
B[ .$<$}G  
public int get() { skm~~JM^  
return queue[1]; 1oc@]0n  
} GaCRo7  
$Ge0<6/  
public void remove() { pwH*&YU  
SortUtil.swap(queue,1,size--); EQWRfx?d  
fixDown(1); < z#.J]  
} z]2MR2W@X  
file://fixdown Oq^t[X'  
private void fixDown(int k) { Z9G4in8  
int j; }a !ny  
while ((j = k << 1) <= size) { .mHVJ5^:4\  
if (j < size %26amp;%26amp; queue[j] j++; enx+,[  
if (queue[k]>queue[j]) file://不用交换 tQ *?L  
break; ~GE|,Np  
SortUtil.swap(queue,j,k); F EUfskv  
k = j; AGl#f\_^  
} /X]gm\x7s  
} s~QIs  
private void fixUp(int k) { /Y=_EOS  
while (k > 1) { s3Wjhw/  
int j = k >> 1; QQ`tSYgex  
if (queue[j]>queue[k]) m@Dra2Cv'@  
break; o~<jayqU  
SortUtil.swap(queue,j,k); D<hX%VJ%M  
k = j; TMGYNb%<bX  
} ihJ!]#Fbm  
} ch2m Ei(  
+DG-MM%\  
} w\mTug  
mGDy3R90  
} 8.G<+.  
`$Um  
SortUtil: [+d~He  
4{Q$^wD+.  
package org.rut.util.algorithm; W__Y^\ ~  
 ,)uW`7  
import org.rut.util.algorithm.support.BubbleSort; g:O/~L0Xb  
import org.rut.util.algorithm.support.HeapSort; =0L%<@yA  
import org.rut.util.algorithm.support.ImprovedMergeSort; `YUeVz>q?  
import org.rut.util.algorithm.support.ImprovedQuickSort; *8Su:=*b  
import org.rut.util.algorithm.support.InsertSort; &zd@cr1  
import org.rut.util.algorithm.support.MergeSort; [p' A?-  
import org.rut.util.algorithm.support.QuickSort; oxBTm|j7  
import org.rut.util.algorithm.support.SelectionSort; VX*+:  
import org.rut.util.algorithm.support.ShellSort; 9@ 4]t6h[  
S}fQis  
/** !?R#e`}  
* @author treeroot k`o8(zPb  
* @since 2006-2-2 :_<&LO]Q  
* @version 1.0 H | C3{9  
*/ 3dz{" hV  
public class SortUtil { a x)J!I18  
public final static int INSERT = 1; pTaC$Ne  
public final static int BUBBLE = 2; y4! :l=E^  
public final static int SELECTION = 3; M,W-,l ]  
public final static int SHELL = 4; xQ';$&  
public final static int QUICK = 5; MQDLC7Y.p5  
public final static int IMPROVED_QUICK = 6; 7O8 @T-f+2  
public final static int MERGE = 7; $}IG+ ,L  
public final static int IMPROVED_MERGE = 8; 2 FoLJ  
public final static int HEAP = 9; ^62z\Y  
_xH<R  
public static void sort(int[] data) { QOgGL1)7-  
sort(data, IMPROVED_QUICK); r@zs4N0WP  
} H "Io!{aKU  
private static String[] name={ \crh`~?>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" j\wZjc-j  
}; p0y|pD  
$tF\7.e@  
private static Sort[] impl=new Sort[]{ !vSq?!y6*P  
new InsertSort(), tAo$; |  
new BubbleSort(), C:t?HLY)fG  
new SelectionSort(), *|j4>W\J  
new ShellSort(), w#hg_RK(Jr  
new QuickSort(), k]C k%[d  
new ImprovedQuickSort(), +=Q:g,kP  
new MergeSort(), ).`v&-cK4E  
new ImprovedMergeSort(), BQ<\[H;  
new HeapSort() l.]wBH#RS  
}; w N`Nj m9!  
',!jYh}Uxk  
public static String toString(int algorithm){ pH.&C 5kA  
return name[algorithm-1]; i-;#FT+ Xc  
} mI{Fs|9h  
JWaWOk(t=?  
public static void sort(int[] data, int algorithm) { '^C *%"I]  
impl[algorithm-1].sort(data);  Qe7=6<  
} mR1b.$  
)A%* l9\nG  
public static interface Sort { (]\p'%A)  
public void sort(int[] data); TQKcPVlE  
} wdf;LM  
0>Td4qr+u  
public static void swap(int[] data, int i, int j) { N P+ vi@Ud  
int temp = data; B6;>V`!  
data = data[j]; k0N>J8y  
data[j] = temp; po'b((q  
} ?%su?L  
} < qab\M0W  
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