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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。 0x)dnq\  
插入排序: S;@ay/*~  
#I\Y= XCY  
package org.rut.util.algorithm.support; 0.(<'!"y  
rjojG59U>  
import org.rut.util.algorithm.SortUtil; : iY$82wQ  
/** (wt+`_6  
* @author treeroot 6p<`h^  
* @since 2006-2-2  7 Yv!N  
* @version 1.0 wODvc9p}]  
*/ ahIE;Y\j'  
public class InsertSort implements SortUtil.Sort{ J=WB6zi  
3 (lVmfk  
/* (non-Javadoc) cqL(^R.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c{88m/;eP  
*/ i Q`]ms+  
public void sort(int[] data) { - @bp4Z=  
int temp; v|+5:jFOqb  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9R]](g#  
} H7IW"UkBR  
} OeTu?d&N  
} Z[IM<S9lz  
2cnj@E:5l  
} f]_mzF=&  
g6' !v  
冒泡排序: wly>H]i'  
>!BFt$sd  
package org.rut.util.algorithm.support; _PB@kH#  
9Q[>.):  
import org.rut.util.algorithm.SortUtil; wJIB$3OT  
9m!7|(QV  
/** 0\ f-z6  
* @author treeroot !t-K<'  
* @since 2006-2-2 Ml`vx  
* @version 1.0 mTjm92  
*/ ,YlQK;  
public class BubbleSort implements SortUtil.Sort{ HF4Lqh'oco  
;QPy:x3  
/* (non-Javadoc) vgk9b!Xd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @36S}5Oa  
*/ l{EU_|q  
public void sort(int[] data) { BI/y<6#rR  
int temp; 5faj;I{%JY  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8ui=2k(  
if(data[j] SortUtil.swap(data,j,j-1); |cu`f{E2]  
} tp+=0k2i  
} uC[d%v`  
} 4K,''7N3  
} 3H'*?|Y(#  
b;{h?xc6  
} b`]M|C [5  
 1ZNNsB  
选择排序: _80ns&q  
m<FK;   
package org.rut.util.algorithm.support; jZ#UUnR%  
]wf |PU~nr  
import org.rut.util.algorithm.SortUtil; ?pKN'`  
=h[yA f  
/** |8'B/ p=  
* @author treeroot qb$_xIQpDL  
* @since 2006-2-2 uN(b.5y  
* @version 1.0 2fP~;\AP  
*/ *[ #*n n  
public class SelectionSort implements SortUtil.Sort { O\JD,w  
L5C2ng>  
/* 6`W|V+6|7  
* (non-Javadoc) \CwtX(6.  
* eaxfn]gV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kYtHX~@  
*/ xXPUrv5zO  
public void sort(int[] data) { %09*l%,;  
int temp; pj@Yqg/  
for (int i = 0; i < data.length; i++) { L6kZ2-6  
int lowIndex = i; [yvt1:q  
for (int j = data.length - 1; j > i; j--) { j88=f#<  
if (data[j] < data[lowIndex]) { ~zj"OG"zOw  
lowIndex = j; )^(P@D.L  
} #!1IP~  
} v*XkWH5  
SortUtil.swap(data,i,lowIndex); ex=)H%_|  
} -[<vYxX:h:  
} c-`37. J  
5Abz 5-^KH  
} ~R$[n.Vpk  
WN1Jm:5YV  
Shell排序: YPG,9iZ&f  
]*a@*0=  
package org.rut.util.algorithm.support; oL)lyUVT  
g@}6N.]#  
import org.rut.util.algorithm.SortUtil; *F|i&2  
9D%qXU  
/** )kF2HF  
* @author treeroot {9Db9K^  
* @since 2006-2-2 U(P:Je  
* @version 1.0 yW{mK  
*/ oFb\T iLu  
public class ShellSort implements SortUtil.Sort{ e7lo!( >#  
C)U #T)  
/* (non-Javadoc) TG4^_nRl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =>e?l8`%  
*/ 7 T mK  
public void sort(int[] data) { gu^_iU  
for(int i=data.length/2;i>2;i/=2){ P:>'   
for(int j=0;j insertSort(data,j,i); G I&qwA  
} f!mE1,eBEe  
} j6RJC  
insertSort(data,0,1); g(KK9Unu  
} %l%=Dkss  
Y' 2-yB  
/** 2.!1kije  
* @param data Tw}@+-  
* @param j 0 -!?W  
* @param i "k/;`eAP  
*/ 5Ws5X_?d  
private void insertSort(int[] data, int start, int inc) { ; A x=]Q  
int temp; #dHr&1(  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); cO8`J&EK  
} K<RmaXZ  
} zoR,RBU6  
} rf)PAdj|~  
F19;RaP+  
} 5<!o{)I  
jkZ_c!  
快速排序: &"sX^6t  
,\BfmC_i  
package org.rut.util.algorithm.support; 7ytm .lU  
@gs26jX~2}  
import org.rut.util.algorithm.SortUtil; O)Xd3w'  
u4go*#  
/** @QvfN>T  
* @author treeroot T_3V/)%@  
* @since 2006-2-2 >|v=Ba6R0  
* @version 1.0 I/u'bDq  
*/ luJ{Iq  
public class QuickSort implements SortUtil.Sort{ qPp1:a"   
m]bL)]Z  
/* (non-Javadoc) E6,`Ld;c[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hVQ7'@  
*/ pI'8>_o  
public void sort(int[] data) { plzE  
quickSort(data,0,data.length-1); -fb1cv~N  
} $ iX^p4v  
private void quickSort(int[] data,int i,int j){ c2tEz&=G  
int pivotIndex=(i+j)/2; .q AQP L  
file://swap 0SAG6k~x  
SortUtil.swap(data,pivotIndex,j); P&qy.0  
]s1TJw [B  
int k=partition(data,i-1,j,data[j]); fs]#/*RR  
SortUtil.swap(data,k,j); [d!Af4  
if((k-i)>1) quickSort(data,i,k-1); VZU Zngw  
if((j-k)>1) quickSort(data,k+1,j); c@0l-R{q  
sV9{4T~#|  
} $K=K?BV[  
/** BsoFQw4$9  
* @param data sg'Y4  
* @param i -~QlHp&SY  
* @param j P^'>dOI0w  
* @return <) >gg!   
*/ 34&u]4=L)  
private int partition(int[] data, int l, int r,int pivot) { D'HL /[@`  
do{ C=xo&I7  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); bAA'=z<  
SortUtil.swap(data,l,r); (E2lv#[  
} 7)ES!C   
while(l SortUtil.swap(data,l,r); &F@tmM~  
return l; mI{CM: :  
} *@b~f&Lx6  
-o! saX<  
} XnNOj>!  
C9"f6>i  
改进后的快速排序: #R"9)vHp  
8EW`*+%=  
package org.rut.util.algorithm.support; MSxU>FX0  
;iwD/=Y  
import org.rut.util.algorithm.SortUtil; J8`1V `$  
zD#+[XI]K  
/** m%BMd  
* @author treeroot |r<.R>  
* @since 2006-2-2 hs -}:^S`  
* @version 1.0 DbPBgD>Q  
*/ DI2S %N l  
public class ImprovedQuickSort implements SortUtil.Sort { Yp?a=R  
(<5'ceF )X  
private static int MAX_STACK_SIZE=4096; .q|xMS}4  
private static int THRESHOLD=10; $AL|d[[T[  
/* (non-Javadoc) p!rG PyGC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;1(qGy4  
*/   t`&s  
public void sort(int[] data) { 5BGv^Qb_2  
int[] stack=new int[MAX_STACK_SIZE]; BhhK| U/  
E`sapk  
int top=-1; SbQ{ >  
int pivot; $D2Ain1  
int pivotIndex,l,r; O7L6Htya  
$7k04e@ ]  
stack[++top]=0; 9R t(G_'  
stack[++top]=data.length-1; J[_?>YJ  
})yb   
while(top>0){ s3fGX|;  
int j=stack[top--]; ) Sh;UW  
int i=stack[top--]; )9;kzp/  
oeU+?-y/b  
pivotIndex=(i+j)/2; _tg3%X]  
pivot=data[pivotIndex]; 8mQd*GGu1  
b^|,9en  
SortUtil.swap(data,pivotIndex,j); -^SD6l$  
U]R|ej  
file://partition s*A|9u f5  
l=i-1; RAXJsF^5o  
r=j; DQHGq_unP  
do{ EWvid4QEi  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); H6+st`{  
SortUtil.swap(data,l,r); }e;p8)]Wl  
} uma9yIk  
while(l SortUtil.swap(data,l,r); M3xi 0/.  
SortUtil.swap(data,l,j); {UjIxV(J  
l.t.,:  
if((l-i)>THRESHOLD){ # xE>]U  
stack[++top]=i; q?b)zeJ  
stack[++top]=l-1; I[YfF  
} ohG43&g~  
if((j-l)>THRESHOLD){ U S~JLJI  
stack[++top]=l+1; [E&"9%K  
stack[++top]=j; Y{\2wU!Isn  
} m0K2p~  
i =+<7]Q  
} }N=zn7W  
file://new InsertSort().sort(data); l'X?S(fiV  
insertSort(data); ]{l O  
} JZ*?1S>  
/** fTnyCaB  
* @param data 'Y/V9;`)s  
*/ n ;fTx  
private void insertSort(int[] data) { PfMOc+ q  
int temp; UHm+5%ZC  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @;-Un/'C;7  
} `[R:L.H1  
} doUqUak  
} D_`)T;<Sp  
t`/RcAwA  
} (%^TTe  
SX94,5 _Q  
归并排序: (inwKRH  
XT;IEZQZ  
package org.rut.util.algorithm.support; )e$-B]>7z  
xn#I7]]G  
import org.rut.util.algorithm.SortUtil; !haXO  
?J1&,'&  
/** S| ?--vai_  
* @author treeroot MkIO0&0O  
* @since 2006-2-2 vVRCM  
* @version 1.0 UEb'E;  
*/ ;R>42 qYF  
public class MergeSort implements SortUtil.Sort{ YRX2^v ^[  
bSKV|z/x  
/* (non-Javadoc) h.0&)t\q"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GoGgw]h>x  
*/ gG|1$  
public void sort(int[] data) { [IX!3I[J]  
int[] temp=new int[data.length]; 9!<3qx/  
mergeSort(data,temp,0,data.length-1); Q#AHEm{9;s  
} T_ #oMXZ/  
{@`Uf;hPAX  
private void mergeSort(int[] data,int[] temp,int l,int r){ iV$75Atk  
int mid=(l+r)/2; o%s}jBo}  
if(l==r) return ; 246!\zf  
mergeSort(data,temp,l,mid); J;9QDrl`  
mergeSort(data,temp,mid+1,r); 1T^L) %&p_  
for(int i=l;i<=r;i++){ X"r$,~  
temp=data; omU)hFvyS  
} :9< r(22  
int i1=l; , X+(wp  
int i2=mid+1; 833t0Ml1A/  
for(int cur=l;cur<=r;cur++){ |Y8o+O_`  
if(i1==mid+1) Fi}rv[`XY[  
data[cur]=temp[i2++]; HBYpjxh  
else if(i2>r) f*@:{2I.v  
data[cur]=temp[i1++]; "+Yn;9  
else if(temp[i1] data[cur]=temp[i1++]; 9`VF [* 9  
else zIm!8a  
data[cur]=temp[i2++]; _ o3}Ly}  
} u 9Tl Xn  
} ZOsn,nF  
Lu5.$b  
} )}lV41u  
}J lW\#  
改进后的归并排序: 1Ac1CsK*  
sM_e_e  
package org.rut.util.algorithm.support; }# ^Pb M  
LxDhthZi_  
import org.rut.util.algorithm.SortUtil; )o,0aGo>Of  
D'+8]B  
/** cW%O-  
* @author treeroot (`*wiu+i  
* @since 2006-2-2 }e@-[RJ!  
* @version 1.0 2geC3v% 0o  
*/ | Ylk`<  
public class ImprovedMergeSort implements SortUtil.Sort { 9^olAfX`dB  
!X_~|5.  
private static final int THRESHOLD = 10; S!cXc/H-R  
&d;$k  
/* 5Yr$dNe  
* (non-Javadoc) {P+[C O  
* (o\~2e:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u{z{3fW_  
*/ %q^]./3p  
public void sort(int[] data) { x=)$sD-3  
int[] temp=new int[data.length]; -/?<@*n  
mergeSort(data,temp,0,data.length-1); 9m!fW|4  
} )P])0Y-  
b5R*]  
private void mergeSort(int[] data, int[] temp, int l, int r) { EUqG"h5#A{  
int i, j, k; kRPg^Fw"Vw  
int mid = (l + r) / 2; ]42 l:at  
if (l == r) E(#2/E6  
return; .IU+4ENSy4  
if ((mid - l) >= THRESHOLD) 4r&~=up]  
mergeSort(data, temp, l, mid); 4N&}hOM'S  
else GAKJc\o  
insertSort(data, l, mid - l + 1); UJ:B:hh''  
if ((r - mid) > THRESHOLD) f' S"F  
mergeSort(data, temp, mid + 1, r); *Y~64FM  
else o5uwa{v  
insertSort(data, mid + 1, r - mid); AtI,& S#{  
d\M !o*U  
for (i = l; i <= mid; i++) { ":ycyN@g  
temp = data; (Bz(KyD[  
} aT#|mk=\  
for (j = 1; j <= r - mid; j++) { S{6u\Vy  
temp[r - j + 1] = data[j + mid]; .M lE1n'  
} +fN0> @s  
int a = temp[l]; ^da-R;o]  
int b = temp[r]; *VB*/^6A  
for (i = l, j = r, k = l; k <= r; k++) { \BW(c)Q  
if (a < b) { b8&9pLl  
data[k] = temp[i++]; g:yK/1@Hk}  
a = temp; p(Mv^ea  
} else { 8z"Yo7no  
data[k] = temp[j--]; hkG<I';M?M  
b = temp[j]; ??PpHB J')  
} rH,N.H#]  
} b%(0AL  
} 1Jt%I'C?  
Nsq%b?#  
/** &n|gPp77$  
* @param data ;<\*(rUe  
* @param l "'Ik{wGc  
* @param i gK /K Z8  
*/ 5> UgBA  
private void insertSort(int[] data, int start, int len) { .kVga+la?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Dts:$PlCk  
} eR CGr?e4  
} 43Q&<r$[T  
} M%/D:0  
} ]+AI:  
tyh%s"  
堆排序: 15COwc*k  
})B)-8  
package org.rut.util.algorithm.support; i!NGX  
n2E2V<#   
import org.rut.util.algorithm.SortUtil; s= :n<`Z2  
+]#>6/2q  
/** (&S v $L@  
* @author treeroot x{m)I <.:  
* @since 2006-2-2 39"'Fz?1  
* @version 1.0 4{|lzo'&  
*/ _R]h]<TQ  
public class HeapSort implements SortUtil.Sort{ tc[PJH&P  
f: R h9  
/* (non-Javadoc) U+KbvkX wj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #r1x0s40D  
*/ Xe5J  
public void sort(int[] data) { {PU[MHZF  
MaxHeap h=new MaxHeap(); gVGq  
h.init(data); 1g;3MSn~  
for(int i=0;i h.remove(); Th8xh=F[  
System.arraycopy(h.queue,1,data,0,data.length); Y , P-@(  
} C oaqi`v4T  
Uc4r  
private static class MaxHeap{ o` e~1  
_?{2{^v  
void init(int[] data){ k z#DBh!&  
this.queue=new int[data.length+1]; L8V'mUyD  
for(int i=0;i queue[++size]=data; 3yTBkFI!  
fixUp(size); ( nBsf1l  
} O @w=  
} 9`xq3EL2T  
Z8m/8M  
private int size=0; 6)W9/V-W  
ag3T[}L z  
private int[] queue; &?~> I[^~  
a@%FwfIu  
public int get() { 4F'@yi^Gt  
return queue[1]; =%a.C(0&G  
} ;G w5gK^  
D,NjDIG8  
public void remove() { pD){K  
SortUtil.swap(queue,1,size--); !XK p_v  
fixDown(1); >9|Q,/b0  
} oL<^m?-u  
file://fixdown W7.]V)$wM  
private void fixDown(int k) { +ux,cx.U"  
int j; a+ ]@$8+  
while ((j = k << 1) <= size) { d@C93VYp  
if (j < size %26amp;%26amp; queue[j] j++; c^m}ep\F5L  
if (queue[k]>queue[j]) file://不用交换 ]+J]}C]\d  
break; r> NgJf,  
SortUtil.swap(queue,j,k); C<{k[!N%zm  
k = j; Jr#ptf"Wu  
} |`,%%p|T%  
} (Y-7B  
private void fixUp(int k) { rl!c\  
while (k > 1) { P}cGWfj  
int j = k >> 1; {uq  
if (queue[j]>queue[k]) RFqbwPX  
break; ni9/7  
SortUtil.swap(queue,j,k); !sUo+Y  
k = j; =T9QmEBm  
} ,*Sj7qb#  
} ,b2Cl[  
Dk/;`sXV  
} ao Y "uT+  
?FD^S~bz-  
} R\)pW9)  
NCBS=L:  
SortUtil: )fv0H&g  
![ Fb~Egc  
package org.rut.util.algorithm; F?TAyD*  
$:SHZe  
import org.rut.util.algorithm.support.BubbleSort; .#P'NF(5#  
import org.rut.util.algorithm.support.HeapSort; L= hPu#&/  
import org.rut.util.algorithm.support.ImprovedMergeSort; &Zd! |u  
import org.rut.util.algorithm.support.ImprovedQuickSort; UP^{'eh  
import org.rut.util.algorithm.support.InsertSort; e5C560  
import org.rut.util.algorithm.support.MergeSort; B_nim[72  
import org.rut.util.algorithm.support.QuickSort; Ee d2`~  
import org.rut.util.algorithm.support.SelectionSort; c:M~!CXO  
import org.rut.util.algorithm.support.ShellSort; R Mrh@9g  
BA53   
/** ~[t%g9  
* @author treeroot #D&eov?  
* @since 2006-2-2 wm !Y5  
* @version 1.0 l>Z"y\l =  
*/ {|bf`  
public class SortUtil { {IJ,y27  
public final static int INSERT = 1; ):31!IC  
public final static int BUBBLE = 2; C65( m  
public final static int SELECTION = 3; ]:8:|*w  
public final static int SHELL = 4; ?V3e;n  
public final static int QUICK = 5; 9])dLL0  
public final static int IMPROVED_QUICK = 6; { owK~  
public final static int MERGE = 7; Z~[c65Nlu  
public final static int IMPROVED_MERGE = 8; qlNK }  
public final static int HEAP = 9; 7X*$Fu<  
?I6!m~  
public static void sort(int[] data) { >$j?2,Za(V  
sort(data, IMPROVED_QUICK); N^jQ\|A<  
} _?]bd-E  
private static String[] name={ &Rdg07e;>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" gi#bU  
}; h(l4\)  
>|'u:`A  
private static Sort[] impl=new Sort[]{ ;shhg z$  
new InsertSort(), b*&AIiT  
new BubbleSort(), JvX]^t/}  
new SelectionSort(), SfLZVB  
new ShellSort(), Q}C)az  
new QuickSort(), F !g>fIg  
new ImprovedQuickSort(), )O*\}6:S  
new MergeSort(), agp`<1h9  
new ImprovedMergeSort(), la+RK  
new HeapSort() 589hfET  
}; I7,5ID4pn  
%38HGjS  
public static String toString(int algorithm){ 0N>NX?r  
return name[algorithm-1]; k+b!Lw!L  
} j1D 1tn  
/vO8s??  
public static void sort(int[] data, int algorithm) { !Lkk1z o  
impl[algorithm-1].sort(data); c_wvuKa  
} 7vZtEwC)n  
[}:;B$,  
public static interface Sort { HueGARS  
public void sort(int[] data); AH-B/c5  
} d^h`gu~3  
W'lejOiw  
public static void swap(int[] data, int i, int j) { &GYnGrw?@  
int temp = data; &Z'3n9zl  
data = data[j]; bji5X')~#  
data[j] = temp; @%iZT4`Ejf  
} u|(;SY  
} Pa)'xfQ$Y6  
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