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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。 U [*FCD!~  
插入排序: 5*E]ETo@R  
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package org.rut.util.algorithm.support; 0QFS  
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import org.rut.util.algorithm.SortUtil; ^2+yHw  
/** ,">]`|?  
* @author treeroot 7_%"BVb"  
* @since 2006-2-2 {`J)j6;  
* @version 1.0 ;P;-}u  
*/ 7/!8e.M\  
public class InsertSort implements SortUtil.Sort{ 'r4/e-`pK  
ks"|}9\%<  
/* (non-Javadoc) S-Wzour,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %kv0We fs  
*/ R,gR;Aarw  
public void sort(int[] data) { $RYa6"`  
int temp; OPwtV9%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z?}dq-Vh&  
} 'w!Cn>  
} FQm`~rA~zt  
} >go,K{cK6  
<L`KzaA  
} `2'#! -  
`rgn<I"  
冒泡排序: ;L cVr13J/  
9}l33T4T  
package org.rut.util.algorithm.support; &]8P1{  
9zZr^{lUl  
import org.rut.util.algorithm.SortUtil; r) HHwh{9  
LISM ngQ.  
/** YX=a#%vrl  
* @author treeroot kv3E4,<9  
* @since 2006-2-2 ? K ;dp  
* @version 1.0 d_CKP"TA  
*/ 0>C T=(A  
public class BubbleSort implements SortUtil.Sort{ 0C1pt5K  
"|Xk2U  
/* (non-Javadoc) Gnf~u[T6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }#.L7SIJ<J  
*/ y603$Cv  
public void sort(int[] data) { K&bzDzd`  
int temp; 4^TG>j?M  
for(int i=0;i for(int j=data.length-1;j>i;j--){ L_vISy%\b  
if(data[j] SortUtil.swap(data,j,j-1); U[SaY0Z  
} 6""G,"B  
} wN`jE0 {  
} ^?U!pq -`  
} q ]M+/sl  
61. Brp.eP  
} J!0DR4=Xi  
xgbJ2Mh  
选择排序: ^=T$&gD  
g,}_G3[j0m  
package org.rut.util.algorithm.support; pi /g H  
;-9=RI0  
import org.rut.util.algorithm.SortUtil; H(bs$C4F  
F5?m6`g?  
/** 'd.EC#  
* @author treeroot vtw6FX_B  
* @since 2006-2-2 t\Nq R  
* @version 1.0 21 O'M  
*/ )\_:{c  
public class SelectionSort implements SortUtil.Sort { 4xk|F'6K  
Ey_" ~OB  
/* U@gn;@\  
* (non-Javadoc) }lh I\q  
* H$@`,{M629  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =+ytTQc*ot  
*/ /`f^Y>4gD  
public void sort(int[] data) { #.it]Nv{  
int temp; {. 2k6_1[  
for (int i = 0; i < data.length; i++) { 'ixwD^x  
int lowIndex = i; 8dZ0rPd?  
for (int j = data.length - 1; j > i; j--) { j/>$,   
if (data[j] < data[lowIndex]) { fG}tMSI  
lowIndex = j; b?TO=~k,  
} V^JV4 `o  
} U'8bdsF_  
SortUtil.swap(data,i,lowIndex); lp<g \  
} Qj,]N@7  
} [ JpKSTg[  
LJ*q1 ;<E  
} p89wNSMl[  
<<(wa j  
Shell排序: dQ_!)f&w1  
YQ39 A_e g  
package org.rut.util.algorithm.support; T? tG~  
w9NHk~LHKF  
import org.rut.util.algorithm.SortUtil; Qk\A c  
6,d@p  
/** >}!mQpAO  
* @author treeroot Pdt6nzfr  
* @since 2006-2-2 }D7I3]2>   
* @version 1.0 ? %`@ub$  
*/ F_;vO%}  
public class ShellSort implements SortUtil.Sort{ 9:,V5n=  
V>ieh2G(  
/* (non-Javadoc) 'f[T&o&L/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '<rZm=48  
*/ zRq-b`<7V  
public void sort(int[] data) { 30XR 82P/  
for(int i=data.length/2;i>2;i/=2){ T'4z=Z]w  
for(int j=0;j insertSort(data,j,i); *8#i$w11M  
} )6+eNsxMlC  
} _C(m<n  
insertSort(data,0,1); c}y [[EX  
} PIH*Rw*GKZ  
Z0o~+Ct$  
/** $4tWI O  
* @param data |_`E1Y}}  
* @param j R$[#+X!  
* @param i h&`e) a>+  
*/ Hz.(qW">5*  
private void insertSort(int[] data, int start, int inc) { 5$wpL(:R(  
int temp; y>72{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); DTa N"{  
} 89\n;5'f4  
} 3jlh}t>$l  
} zY|t0H  
/[Z,MG  
} GG@ md_  
s}jHl8  
快速排序: b!sRk@LGZ  
:lB=L r)  
package org.rut.util.algorithm.support; 6 G3\=)  
'h^0HE\~p  
import org.rut.util.algorithm.SortUtil; MxGu>r  
}z\_;\7  
/** KnsT\>[K  
* @author treeroot qW!]co  
* @since 2006-2-2 YN`H BFH  
* @version 1.0  A-4h  
*/ J.ck~;3  
public class QuickSort implements SortUtil.Sort{ _Y8hb!#(  
^@qvl%j  
/* (non-Javadoc) O [i#9)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e XfZ5(na  
*/ 7VMvF/ap]u  
public void sort(int[] data) { u86"Y ^d#  
quickSort(data,0,data.length-1); xKQ+{"?-^g  
} *M$0J'-BQ  
private void quickSort(int[] data,int i,int j){ gF$V$cU  
int pivotIndex=(i+j)/2; n@U n  
file://swap f}1&HI8r  
SortUtil.swap(data,pivotIndex,j); (*oL+ef-C  
l-ct?T_@  
int k=partition(data,i-1,j,data[j]); &_"]5/"(  
SortUtil.swap(data,k,j); N 5i+3&  
if((k-i)>1) quickSort(data,i,k-1); Dh5X/y  
if((j-k)>1) quickSort(data,k+1,j); H63,bNS s  
\/1<E?Q f  
} Td G!&:>  
/** /c2w/+ _  
* @param data d4nH_?  
* @param i EI:w aIr  
* @param j D3)zk@N  
* @return );Z1a&K5k  
*/ 6(G?MW.  
private int partition(int[] data, int l, int r,int pivot) { Gi "941zVl  
do{ <L`"!~Q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J2j U4mR  
SortUtil.swap(data,l,r); i{ \%e  
} \'9PZ6q{  
while(l SortUtil.swap(data,l,r); R,|d`)T  
return l; G(~;]xNW+  
} r8,romE$  
yQ^($#Yk  
} <o+<H  
~ug= {b  
改进后的快速排序: Nkp)Ax&  
ik!..9aB  
package org.rut.util.algorithm.support; " t7M3i_  
LxpuhvIO  
import org.rut.util.algorithm.SortUtil; xA9:*>+>  
 >lBD<;T  
/** (HSgEs1d  
* @author treeroot g_G6~-.9I  
* @since 2006-2-2 x-?{E  
* @version 1.0 :PtF+{N>  
*/ nzmDA6d  
public class ImprovedQuickSort implements SortUtil.Sort {  jcI&w#re  
YhY:~  
private static int MAX_STACK_SIZE=4096; ds&e|VSH;  
private static int THRESHOLD=10; /r-aPJX  
/* (non-Javadoc) `&-Mi[1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uPRQU+  
*/ Ay !G1;  
public void sort(int[] data) { *Mw_0Y  
int[] stack=new int[MAX_STACK_SIZE]; CT1ja.\;  
2AtLyN'.  
int top=-1; 6%fKuMpK(  
int pivot; V^\8BVw  
int pivotIndex,l,r; [-)r5Dsdq  
6$ Gep  
stack[++top]=0; 40|,*wi  
stack[++top]=data.length-1; 1}tbH[  
Tp0bS  
while(top>0){ 5cEcTJL[C  
int j=stack[top--]; VMCLHpSfW  
int i=stack[top--]; ({NAMc*  
dlG=Vq&Y  
pivotIndex=(i+j)/2; j S]><rm  
pivot=data[pivotIndex]; =IUUeFv +r  
6<$Odd  
SortUtil.swap(data,pivotIndex,j); ND5`Q"k   
9Ffp2NW`;  
file://partition _z54Ycr4H  
l=i-1; C#H:-Q&  
r=j; !vk|<P1  
do{ mWyqG*-Hb  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #vzEu )Ul  
SortUtil.swap(data,l,r); !YP@m~  
} H_0/f8GwnG  
while(l SortUtil.swap(data,l,r); *FmTy|  
SortUtil.swap(data,l,j); |U_]vMq  
IN,(y aC  
if((l-i)>THRESHOLD){ gq"gUaz  
stack[++top]=i; Y;)dct  
stack[++top]=l-1; a\%xB >LX  
} |gsE2vV  
if((j-l)>THRESHOLD){ ]>+PnP35G  
stack[++top]=l+1; MNg^]tpf  
stack[++top]=j; 8Th` ]tI  
} eQVZO>)P1+  
J@OB`2?Zv  
} H<QT3RF2  
file://new InsertSort().sort(data); EZYBeqv  
insertSort(data); 9 Rx s  
} 0d3+0EN{  
/** lt_']QqU  
* @param data Q7g>4GZC  
*/ 5bA)j!#)|X  
private void insertSort(int[] data) { TO-nD>  
int temp; ,:%"-`a%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ) /v6l  
} lw :`M2P,  
} MCT'Nw@A  
} qVdwfT{1J  
B}eA\O4}I  
} _ z;q9&J)  
-_<}$9lz  
归并排序: |Xw/E)jA  
&<+ A((/i  
package org.rut.util.algorithm.support; 3mSXWl^?  
&E M\CjKv"  
import org.rut.util.algorithm.SortUtil; (D 9Su^:1  
@rHK( 25+d  
/** YhRWz=l  
* @author treeroot [y0O{,lI  
* @since 2006-2-2 HBY.DCN[Z  
* @version 1.0 sO5?aB&  
*/ J -ePE7i  
public class MergeSort implements SortUtil.Sort{ o=RM-tR`v  
q|%(3,)ig  
/* (non-Javadoc) 'oN\hy($,h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2>\v*adG  
*/ >j{z>  
public void sort(int[] data) { 6&!&\  
int[] temp=new int[data.length]; &*s0\ 8  
mergeSort(data,temp,0,data.length-1); 4Td{;Y="yF  
} :aG#~-Q  
5'Q|EIL  
private void mergeSort(int[] data,int[] temp,int l,int r){ af |5n><~A  
int mid=(l+r)/2; ]7Fs$y.  
if(l==r) return ; NO] 3*  
mergeSort(data,temp,l,mid); siTX_`0  
mergeSort(data,temp,mid+1,r); St<mDTi  
for(int i=l;i<=r;i++){ .@"q$\  
temp=data; g!i45-n3gt  
} *FfMI  
int i1=l; 5~.ZlGd  
int i2=mid+1; unJ R=~E  
for(int cur=l;cur<=r;cur++){ U#n#7G6fRp  
if(i1==mid+1) fGv#s X  
data[cur]=temp[i2++]; zFQ&5@43  
else if(i2>r) &wU'p-V  
data[cur]=temp[i1++]; 8_&CT :u>  
else if(temp[i1] data[cur]=temp[i1++]; !;Jmg  
else BI:k#jO!  
data[cur]=temp[i2++]; *0_yT$  
} 9=,uq;  
} zyg:nKQW  
m>}8'N)  
} nr)c!8  
63!rUB!  
改进后的归并排序: ?+c`]gO7N  
ZvGgmLN  
package org.rut.util.algorithm.support; UA~RK2k?  
f/kI| Z  
import org.rut.util.algorithm.SortUtil; \*\R1_+  
5/QRL\  
/** cE iu)2*e  
* @author treeroot ?k[p<Uo  
* @since 2006-2-2 3M0+"l(X  
* @version 1.0 ez3Z3t`  
*/ Ke-)vPc  
public class ImprovedMergeSort implements SortUtil.Sort { Wy]^Ub gW  
4gSH(*}  
private static final int THRESHOLD = 10; b.O9ITR  
J4=_w  
/* CU:o*;jP  
* (non-Javadoc) dx,=Rd5'  
* +uWYK9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UwY-7Mmo  
*/ =TP( UJ  
public void sort(int[] data) { D^U: ih  
int[] temp=new int[data.length]; ]0B|V2D#e  
mergeSort(data,temp,0,data.length-1); #&8}<8V  
} L0%hnA@  
W2;N<[wa<u  
private void mergeSort(int[] data, int[] temp, int l, int r) { f&4,?E;6%  
int i, j, k; Lz DI0a.  
int mid = (l + r) / 2; ];+#i"l  
if (l == r) 65,(4Udz!  
return; ^O^:$nXhYy  
if ((mid - l) >= THRESHOLD) h5kPn~  
mergeSort(data, temp, l, mid); /$"[k2 N  
else QFPfIb/  
insertSort(data, l, mid - l + 1); O;HY%  
if ((r - mid) > THRESHOLD) GO! uwo:  
mergeSort(data, temp, mid + 1, r); fWGOP~0  
else 3E^M?N2oc  
insertSort(data, mid + 1, r - mid); ]=73-ywn]  
nsb4S {  
for (i = l; i <= mid; i++) { I1U7.CT  
temp = data; 6 fz}  
} k;dXOn  
for (j = 1; j <= r - mid; j++) { z5Qs @dG  
temp[r - j + 1] = data[j + mid]; XA_FOw!cX  
} +~nzii3  
int a = temp[l]; _U| 7'^|  
int b = temp[r]; Xj+q~4{|vt  
for (i = l, j = r, k = l; k <= r; k++) { wyxGe<1  
if (a < b) { :`vP}I ^  
data[k] = temp[i++];  6qo^2  
a = temp; >cL{Ya}Rz  
} else { DZ ^1s~  
data[k] = temp[j--]; s]27l3)B  
b = temp[j]; HjWq[[Nz  
} W</n=D<,I  
} t j Vh^  
} Vy G4(X va  
Z< b"`ty.  
/** 4\ /*jA  
* @param data G&eP5'B4i  
* @param l qu6DQ@ ~YC  
* @param i SKY*.IW/Z  
*/ 9=dkx^q  
private void insertSort(int[] data, int start, int len) { FZpKFsPx  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); pL1s@KR  
} Lp:6 ;  
} >n.z)ZJ  
} -qV{WZHp  
} FdOFE.l  
X7*`  
堆排序: fn{S "33"  
J?:[$C5  
package org.rut.util.algorithm.support; |f2A89  
YJ7V`N p  
import org.rut.util.algorithm.SortUtil; !$XHQLqF2  
dpN@#w  
/** }b["Jk\2  
* @author treeroot x4a:PuqmGG  
* @since 2006-2-2 6er(%4!  
* @version 1.0 )E7 FA|  
*/ T9y;OG  
public class HeapSort implements SortUtil.Sort{ ZX`J8lZP  
^ DAa%u  
/* (non-Javadoc) +zOOdSFk.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z xZtz  
*/ zz$q5[n  
public void sort(int[] data) { &;q<M_<  
MaxHeap h=new MaxHeap(); NSLVD[yT  
h.init(data); `m%dX'0 E  
for(int i=0;i h.remove(); GSVdb/+  
System.arraycopy(h.queue,1,data,0,data.length); \94jrr  
} {M~lbU  
V`a+Hi<P\  
private static class MaxHeap{ 9|:^k.  
U_z2J(e~  
void init(int[] data){ T>]sQPg  
this.queue=new int[data.length+1]; 0^!Gib  
for(int i=0;i queue[++size]=data; hY \{|  
fixUp(size); nZvU 'k:  
} V/#v\*JHFc  
} CSn<]%GL  
.5tg4%l  
private int size=0; nf%4sIQ*x  
7$T8&Mh  
private int[] queue; &&RA4  
^3I'y UsY  
public int get() { /r$&]C:Fi  
return queue[1]; -]"T^w ib  
} 2 g`[u|  
~5#)N{GbY  
public void remove() { }B!cv{{  
SortUtil.swap(queue,1,size--); M?:\9DDd  
fixDown(1); r:l96^xs  
} oFg'wAO.  
file://fixdown }N3`gCy9eN  
private void fixDown(int k) { XdIah<F2  
int j; JAb$M{t  
while ((j = k << 1) <= size) { >2-F2E,  
if (j < size %26amp;%26amp; queue[j] j++; Z^6#4Q]YC  
if (queue[k]>queue[j]) file://不用交换 eO4)|tW  
break; !ng\` |8?  
SortUtil.swap(queue,j,k); bejGfc  
k = j; !;}2F-  
} P\B3 y+)  
} L~0& Q  
private void fixUp(int k) { $iJnxqn  
while (k > 1) { ,w\ wQn>]K  
int j = k >> 1; wL eHQ]  
if (queue[j]>queue[k]) !]DuZ=  
break; W%8+t)  
SortUtil.swap(queue,j,k); _`aR_ %Gx  
k = j; L{PH0Jf  
} =:5<{J OG  
} a&5g!;.  
Va9q`XbyO  
} V<0$xV1b|=  
d(l|hmj4j9  
} i:Mc(mW  
l BiovT  
SortUtil: ep?:;98|t  
S%+R#A1  
package org.rut.util.algorithm; t"YIq/08  
d^aNR Lv  
import org.rut.util.algorithm.support.BubbleSort; 5~xeO@%I  
import org.rut.util.algorithm.support.HeapSort; %Dyh:h   
import org.rut.util.algorithm.support.ImprovedMergeSort; Mvof%I  
import org.rut.util.algorithm.support.ImprovedQuickSort; r@$B'CsLj  
import org.rut.util.algorithm.support.InsertSort; 6&],WGz  
import org.rut.util.algorithm.support.MergeSort; 9s $PrF  
import org.rut.util.algorithm.support.QuickSort; KM5 JZZP  
import org.rut.util.algorithm.support.SelectionSort; ec'tFL#u{  
import org.rut.util.algorithm.support.ShellSort; <d! 6[,W;  
DT? m/*  
/** h DtK nF  
* @author treeroot \!PV*%P  
* @since 2006-2-2 Jr?!Mh-  
* @version 1.0 nVTM3Cz  
*/ V4?Oc2mS  
public class SortUtil { ,8`O7V{W  
public final static int INSERT = 1; #:W%,$ 9\P  
public final static int BUBBLE = 2; A}4t9|/K6  
public final static int SELECTION = 3; C"No5r'K3  
public final static int SHELL = 4; h6FgS9H  
public final static int QUICK = 5; :@e\'~7sH  
public final static int IMPROVED_QUICK = 6; GN%<"I.  
public final static int MERGE = 7; MgnE-6_c  
public final static int IMPROVED_MERGE = 8; w a.f![  
public final static int HEAP = 9; Ki 3_N*z  
(w2(qT&O  
public static void sort(int[] data) { > ZDC . ~  
sort(data, IMPROVED_QUICK); q] ZSj J  
} s"rg_FoL  
private static String[] name={ ?z"YC&Tp  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" K{FhT9R'  
}; Z!)f*  
Qdm(q:w  
private static Sort[] impl=new Sort[]{ G1r V<,#m  
new InsertSort(), [D9:A  
new BubbleSort(), "i''Ui\H  
new SelectionSort(), l'2H 4W_+  
new ShellSort(), y*|L:!   
new QuickSort(), x~(y "^ph  
new ImprovedQuickSort(), '_E c_F  
new MergeSort(), ^6&_| f  
new ImprovedMergeSort(), _=T]PSauI  
new HeapSort() + o{*r#  
}; M\jB)@)  
%(NN *o9"q  
public static String toString(int algorithm){ H oS|f0  
return name[algorithm-1]; 5%qH 7[dx  
} 1w) fu  
C$ hQN  
public static void sort(int[] data, int algorithm) { nr<.YeJ  
impl[algorithm-1].sort(data); 6'vi68  
} R}.3|0  
1O9$W?)Q  
public static interface Sort { >gGil|I  
public void sort(int[] data); @:IL/o*  
} |Ib.)  
Y`=z.D{  
public static void swap(int[] data, int i, int j) { 1!s!wQgS  
int temp = data; &$Ci}{{n#  
data = data[j]; -PXoMZx%  
data[j] = temp; .SBc5KX  
} jRwa0Px(  
} QP<FCmt8  
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