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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。 D=B$ Pv9%  
插入排序: K;:_UJ>t  
gdPPk=LD  
package org.rut.util.algorithm.support; cst}/8e  
J^!2F}:  
import org.rut.util.algorithm.SortUtil; pKxsK^O5[  
/** IE)$ .%q;)  
* @author treeroot n\-nBrVSf  
* @since 2006-2-2 UR3qzPm!0e  
* @version 1.0 _T96.~Q  
*/ 1Q5:Vo^B#  
public class InsertSort implements SortUtil.Sort{ _H,xnh#nZ  
>MTrq%.  
/* (non-Javadoc) Ofx]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kp6{QKDj&  
*/ _1c0pQ^}3  
public void sort(int[] data) { 2HNAB4 E  
int temp; n7|8`? R^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p)u?x)w=  
} Po)!vL"   
} Q)/V >QW  
} b7^Db6qu  
S7B7'[ru  
} >/]` f8^  
Io(*_3V)B  
冒泡排序: B4D#T lB  
Oc6_x46S4  
package org.rut.util.algorithm.support; ifXGH>C  
EZ"n3#/  
import org.rut.util.algorithm.SortUtil; @5["L  
8Q{"W"]O7  
/** NsPAWI|4  
* @author treeroot %Tv2op  
* @since 2006-2-2 *]7$/%.D  
* @version 1.0 -ho%9LW%|  
*/ 8[k:FGp>  
public class BubbleSort implements SortUtil.Sort{ 5 O't-'  
<UEta>jj  
/* (non-Javadoc) Daw;6f:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @QN(ouqQ  
*/ 483/ZgzT`  
public void sort(int[] data) { Nv~H797B  
int temp; iL$~d@AEn  
for(int i=0;i for(int j=data.length-1;j>i;j--){ FI(iqSJ6  
if(data[j] SortUtil.swap(data,j,j-1); d3[O!4<T  
} qxQuXF>:#  
} <Jf[N=  
} |3bCq(ZR\P  
} eT'Z;ZO  
*=2sXH1j  
} X([8TR  
<hV%OrBz-  
选择排序: [ ,&O  
Irc(5rD7   
package org.rut.util.algorithm.support; ~pC\"LU`  
N|rB~  
import org.rut.util.algorithm.SortUtil; > u!# 4  
9cnLf#  
/** yrF"`/zv6|  
* @author treeroot SSAf<44e  
* @since 2006-2-2 LmZ"_  
* @version 1.0 Y'{F^VxA/  
*/ W"v"mjYud  
public class SelectionSort implements SortUtil.Sort { ^. p d'  
+_T`tmQ  
/* lz [s  
* (non-Javadoc) W{i s2s  
* }e K.\_t=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8Y,imj\(v  
*/ xU!eT'Y  
public void sort(int[] data) { 0! W$Cz[  
int temp; mm:g9j  
for (int i = 0; i < data.length; i++) { ;ztt*py  
int lowIndex = i; (M-W ea!q  
for (int j = data.length - 1; j > i; j--) { *}P=7TuS  
if (data[j] < data[lowIndex]) { M%z$yU`ac  
lowIndex = j; qRc Y(mb  
} $<s;YhM:u)  
} J Q% D6b  
SortUtil.swap(data,i,lowIndex); 7C>5XyyJ  
} ~-tKMc).X  
} lDX\"Fq  
=j~vL`d2]  
} a/{M2  
VR XK/dZ  
Shell排序: |[W7&@hF  
ccY! OSae  
package org.rut.util.algorithm.support; :Ldx^UO  
:pCv!g2  
import org.rut.util.algorithm.SortUtil; P#l"`C /  
k^#+Wma7  
/** {g]Mx|5Q  
* @author treeroot XQPlhpcv  
* @since 2006-2-2 _ *.ImD  
* @version 1.0 )gHfbUYS  
*/ 0}3Xry,{  
public class ShellSort implements SortUtil.Sort{ VK>Cf>  
(Zoopkxw  
/* (non-Javadoc) 63fg l+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $.F.xYS9IJ  
*/ -(lCM/h  
public void sort(int[] data) { g2%fla7r  
for(int i=data.length/2;i>2;i/=2){ KL\hV .6  
for(int j=0;j insertSort(data,j,i); #oD;?Mi  
} $4:Se#nl  
} a{@gzB  
insertSort(data,0,1); $]<wQH/?_  
} xl ]1TB@  
^oMdx2Ow#  
/** T9\G,;VQ7/  
* @param data DS|q(O=7~t  
* @param j OsV'&@+G>  
* @param i O8k+R@  
*/ FaLc*CU  
private void insertSort(int[] data, int start, int inc) { s4[PwD  
int temp; <lgX=wx L  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vLs*}+f  
} c->.eL%   
} /^sk y!  
} rHp2I6.0a  
w2) @o >w  
} Dnp><%  
)dfwYS*[n  
快速排序: e0ULr!p  
P$zhMnAAN  
package org.rut.util.algorithm.support; hf\/2Vl  
uE,g|51H/  
import org.rut.util.algorithm.SortUtil; tF:AqR: (~  
)?{jD  
/** `hf`lq^  
* @author treeroot N}ZBtkR  
* @since 2006-2-2 T h!;zu^t  
* @version 1.0 _P9*78  
*/ <!q_C5>XJ  
public class QuickSort implements SortUtil.Sort{ oV'G67W  
I+/fX0-Lib  
/* (non-Javadoc) JqV}>"WMV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fb8)jd'~}O  
*/ Om(Ir&0  
public void sort(int[] data) { Ez / W$U  
quickSort(data,0,data.length-1); hr W2#v  
} 8 .t3`FGH  
private void quickSort(int[] data,int i,int j){ %J8uVD.2  
int pivotIndex=(i+j)/2; <~zPt&C]V  
file://swap :n,x?bM  
SortUtil.swap(data,pivotIndex,j); ?|Ey WAL  
v Q51-.g  
int k=partition(data,i-1,j,data[j]); BB imP  
SortUtil.swap(data,k,j); /s@j{*Om  
if((k-i)>1) quickSort(data,i,k-1); s+E: 7T9P  
if((j-k)>1) quickSort(data,k+1,j); bT MgE Y  
?&-$Zog  
} LSrKi$   
/** 0"{-<Wot}  
* @param data \U>|^$4 #5  
* @param i G_`Ae%'h  
* @param j ^B!()39R?  
* @return _+OCI%=:  
*/ jJD*s/o  
private int partition(int[] data, int l, int r,int pivot) { iu.Jp92  
do{ !j/54,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); X0knM}5  
SortUtil.swap(data,l,r); LKBh{X0%(  
} mNOx e  
while(l SortUtil.swap(data,l,r); k8b5~A,  
return l; 0ev='v8?  
} av bup  
u6Yp ,!+  
} TN/y4(j  
pM9M8d  
改进后的快速排序: S 3s6  
ji C2B  
package org.rut.util.algorithm.support; TZhYgV  
48Jt1^  
import org.rut.util.algorithm.SortUtil; =fJ  /6  
J7HY(7Nx  
/** pV O{7I  
* @author treeroot t +|t/1s2  
* @since 2006-2-2 &F8*>F^7  
* @version 1.0 @F/,~|{iM  
*/ 2({|LQqk  
public class ImprovedQuickSort implements SortUtil.Sort { ECk3Da  
]xGpN ]u  
private static int MAX_STACK_SIZE=4096;  niyI$OC  
private static int THRESHOLD=10; /!%?I#K{Wq  
/* (non-Javadoc) tn;{r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /VD[:sU7  
*/ UrO& K]Z  
public void sort(int[] data) { (+SL1O P  
int[] stack=new int[MAX_STACK_SIZE]; :j? MEeu  
 $Gcjm~  
int top=-1; *z};&UsF{  
int pivot; ]c M8TT  
int pivotIndex,l,r; kt |j]:  
`A#0If  
stack[++top]=0; o]WcODJdl  
stack[++top]=data.length-1; t'Zv)Wu1E  
'e_e*.z3  
while(top>0){ 4X!4S6JfB  
int j=stack[top--]; tt|P-p-  
int i=stack[top--]; !>f:wk2  
-s0\4  
pivotIndex=(i+j)/2; <"8F=3:uk  
pivot=data[pivotIndex]; 4"UH~A;^  
1je/l9L  
SortUtil.swap(data,pivotIndex,j); cl`7|;v|?  
y t7>,  
file://partition { <1uV']x  
l=i-1; 4 !m'9  
r=j; ?*.:*A  
do{ $y{.fjy3  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ke k/C`7  
SortUtil.swap(data,l,r); S$gLL kD1  
} =!)x`1j!S  
while(l SortUtil.swap(data,l,r); P/xE n_*v  
SortUtil.swap(data,l,j); BF 0#G2`h>  
`KZu/r-M9  
if((l-i)>THRESHOLD){ UC j:]!P  
stack[++top]=i; _GM?`  
stack[++top]=l-1; ui-]%~  
} ^CgN>-xZ?#  
if((j-l)>THRESHOLD){ ttls.~DG  
stack[++top]=l+1; wp83E,  
stack[++top]=j; i(;.Y  
} 6uTC2ka[&R  
U2LD_-HZ  
} rGrR;  
file://new InsertSort().sort(data); V`9*_8Dx2  
insertSort(data); fhyoSRLR:  
} FzykC  
/** QNXoAx%I  
* @param data . IM]B4m  
*/ 9GsG*$-I  
private void insertSort(int[] data) { W)'*Dcd  
int temp; xm5?C>vu(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +d?|R5{3  
} t/_\w"  
} +Jm vB6s  
} ^nK7&]rK  
DWEDL[{  
} KoA+Vv9  
|Qcj +HH.  
归并排序: &8yGV i  
`PUxR8y  
package org.rut.util.algorithm.support; s}-j.jzB{  
$j8CF3d.6  
import org.rut.util.algorithm.SortUtil; 6=Wevb5YJ  
( P=WKZMPN  
/** ?:&2iW7z  
* @author treeroot @^DVA}*b)  
* @since 2006-2-2 !X||ds  
* @version 1.0 @eDs)mY  
*/ u'k+t`V&  
public class MergeSort implements SortUtil.Sort{ [LQOP3f  
vz|(KN[  
/* (non-Javadoc) 6Q J.=.>b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C]fX=~?bGQ  
*/ ?JTTl;  
public void sort(int[] data) { [-i&)eX  
int[] temp=new int[data.length]; FS=LpvOG)  
mergeSort(data,temp,0,data.length-1); 1k^$:'  
} F|VKrH.  
We\i0zUU  
private void mergeSort(int[] data,int[] temp,int l,int r){ s:iBl/N}  
int mid=(l+r)/2; eo@8?>}{X  
if(l==r) return ; >ts}\.(]  
mergeSort(data,temp,l,mid); .5AFAGv_c  
mergeSort(data,temp,mid+1,r); d`C$vj  
for(int i=l;i<=r;i++){ nLmF5.&  
temp=data; o4OB xHKy  
} *]}F=dtR k  
int i1=l; @2mWNYHR*>  
int i2=mid+1; rA^=;?7Q  
for(int cur=l;cur<=r;cur++){ f$9|qfW'$  
if(i1==mid+1) +>%51#2.Q  
data[cur]=temp[i2++]; rqnxRq  
else if(i2>r) +v'2s@e` #  
data[cur]=temp[i1++]; =v 'Aub  
else if(temp[i1] data[cur]=temp[i1++]; 4[&&E7]EX  
else N8k=c3|  
data[cur]=temp[i2++]; 5 UOqS#"0  
} 2b,edJVt?  
} dA E85  
)q.ZzijG/  
} 8 R7w$3pp\  
dh.{lvlX|  
改进后的归并排序: j l]3B  
/I1n${{5  
package org.rut.util.algorithm.support; /Oi(5?Jn  
5`$!s17  
import org.rut.util.algorithm.SortUtil; XA(.O|VZ  
D(TG)X?  
/** N{ $?u  
* @author treeroot p|NY.N  
* @since 2006-2-2 *DXX*9 0  
* @version 1.0 ?B$L'i[l  
*/ F6{/iF  
public class ImprovedMergeSort implements SortUtil.Sort {  I{ki))F  
= Ezg3$%-  
private static final int THRESHOLD = 10; $tI<MZ&Z  
J] w3iYK  
/* =tY%`e  
* (non-Javadoc) lkly2|wA  
* T31F8K3x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a7uL {*ZR  
*/ hoM%|,0  
public void sort(int[] data) { 3 {hUp81>  
int[] temp=new int[data.length]; Fw{68ggk  
mergeSort(data,temp,0,data.length-1); Yk)fBPHr  
} 8DMqjt3B  
$G6kS@A  
private void mergeSort(int[] data, int[] temp, int l, int r) { k@s<*C  
int i, j, k; ixK9/5T  
int mid = (l + r) / 2; 08{^Ksg  
if (l == r) -;ra(L`  
return; r}sO},i  
if ((mid - l) >= THRESHOLD) c0HPS9N\  
mergeSort(data, temp, l, mid); tCoE4Ed  
else p&u\gSo  
insertSort(data, l, mid - l + 1); =cb!2%?}  
if ((r - mid) > THRESHOLD) 5O]ZX3z>  
mergeSort(data, temp, mid + 1, r); rBU)@IpDG  
else .qKfhHJ  
insertSort(data, mid + 1, r - mid); o8H\l\(  
98| v.d  
for (i = l; i <= mid; i++) { FGie*t  
temp = data; >R_m@$`  
} \ykA7Y%  
for (j = 1; j <= r - mid; j++) { 6d6Dk>(V  
temp[r - j + 1] = data[j + mid]; Q4*{+$A  
} &/2+'wCp5  
int a = temp[l]; "L`BuAB  
int b = temp[r]; {O).!  
for (i = l, j = r, k = l; k <= r; k++) { !fd>wvJ,:  
if (a < b) { 0VNpd~G$  
data[k] = temp[i++]; gR gB= C{  
a = temp; D5({&.X[-  
} else { #8 ^b]  
data[k] = temp[j--]; -sdzA6dp  
b = temp[j]; Gd`7Tf)'  
} YlT&.G  
} b/JjA  
} e6H}L:;  
4p+Veo6B  
/** i%F2^R@!q/  
* @param data v@ qDR|?^  
* @param l 1zG6^U  
* @param i ?(Tin80=r  
*/ =./PY10'  
private void insertSort(int[] data, int start, int len) { y`5 ?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); JUj.:n2e  
} (CH6Q]Wi_!  
} yiXb<g+B  
} .iP>?9$f"  
} @Q{:m)\  
nT2b"wkTT  
堆排序: 1{]S[\F]  
Y,yU460T8  
package org.rut.util.algorithm.support; s]`6u yW"  
2 M\7j  
import org.rut.util.algorithm.SortUtil; #`= >Mza  
6/Yo0D>M$  
/** 4+nZ4a>LH?  
* @author treeroot $Q}L*4?]  
* @since 2006-2-2 p,|)qr:M  
* @version 1.0 R/fE@d2~In  
*/ u rQvJ  
public class HeapSort implements SortUtil.Sort{ F7w\ctUP  
6(t'B!x  
/* (non-Javadoc) CS*lk!C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [`E_/95  
*/ bG*l_  
public void sort(int[] data) { ?/5<}W#7}  
MaxHeap h=new MaxHeap(); xluA jOQ6  
h.init(data); GUM-|[~  
for(int i=0;i h.remove(); J#4pA{01w  
System.arraycopy(h.queue,1,data,0,data.length); \I/"W#\SJo  
} [+CFQf>  
{R[V  
private static class MaxHeap{ K4E2W9h  
#lSGH 5Fp?  
void init(int[] data){ >gq=W5vN(  
this.queue=new int[data.length+1]; 8'zfq ]g  
for(int i=0;i queue[++size]=data; &U=_:]/  
fixUp(size); #nft{AN  
} hCc%d$wVk  
} x*tCm8`{  
.YH#+T'  
private int size=0; =w8 0y'  
w)qmq  
private int[] queue; K.&6c,P]  
6Fk[wH 7  
public int get() { sAs`O@  
return queue[1]; w 8cnSO  
} U8HuqFC  
bO6cv{>x  
public void remove() { qJK9C `T%  
SortUtil.swap(queue,1,size--); S:xs[b.ZZ  
fixDown(1); e.(d?/!F_  
} ygm6(+  
file://fixdown n}1hmAh Z  
private void fixDown(int k) { qh&KNJ>1  
int j; +!`$(  
while ((j = k << 1) <= size) { Ln+ k_  
if (j < size %26amp;%26amp; queue[j] j++; *!Gb_!98  
if (queue[k]>queue[j]) file://不用交换 ~R=p[h)  
break; Eg&Q,dH[  
SortUtil.swap(queue,j,k); 4\ )WMP  
k = j; MIZ!+[At  
} [xGL0Z%)t  
} e$Y7V  
private void fixUp(int k) { RLLL=?W@  
while (k > 1) { tpeMq -  
int j = k >> 1; DAtAc(05)  
if (queue[j]>queue[k]) wa&:86~l?  
break; -cZuP7oA  
SortUtil.swap(queue,j,k); /J c^XWf  
k = j; B=X_c5  
} V1G5Kph  
} ; +Ie<oW  
@8:c3 (!  
} =KnHa.%  
Q'ib7R;V,  
} Zw/??Tq b  
K7(GdKZe  
SortUtil: L+lye Ir'  
AGVipI #  
package org.rut.util.algorithm; aK,\e/Oo  
xs "\c7pC  
import org.rut.util.algorithm.support.BubbleSort; $SniQ  
import org.rut.util.algorithm.support.HeapSort; @}+B%R  
import org.rut.util.algorithm.support.ImprovedMergeSort; -wNhbV2  
import org.rut.util.algorithm.support.ImprovedQuickSort; ]i `~J  
import org.rut.util.algorithm.support.InsertSort; ,s@S`KS0  
import org.rut.util.algorithm.support.MergeSort; chE}`I?  
import org.rut.util.algorithm.support.QuickSort; P;&U3i  
import org.rut.util.algorithm.support.SelectionSort; %F;uW[4r  
import org.rut.util.algorithm.support.ShellSort; SokU9n!  
3rX8H`R  
/** ,>TDxI;  
* @author treeroot `sRys oW  
* @since 2006-2-2 Q2@yUDd!  
* @version 1.0 0d`lugf  
*/ aKRnj!4z  
public class SortUtil { Pb@$RAU6 3  
public final static int INSERT = 1; N$ 2Iz  
public final static int BUBBLE = 2; vDc&m  
public final static int SELECTION = 3; [{ A5BE -  
public final static int SHELL = 4; IY2f$YV  
public final static int QUICK = 5; 1gYvp9Ma  
public final static int IMPROVED_QUICK = 6; :ZM=P3QZ  
public final static int MERGE = 7; @Hp=xC9V  
public final static int IMPROVED_MERGE = 8; + J}h  
public final static int HEAP = 9; wG22ffaki  
oOQ0f |MGp  
public static void sort(int[] data) { ]ddL'>$c$  
sort(data, IMPROVED_QUICK); L'>0E(D  
} 0J= $ A  
private static String[] name={ BT5~MYBl  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" kh>i#9Ie  
}; '}P$hP_d  
R_:-Z .  
private static Sort[] impl=new Sort[]{ h#|Ac>fz  
new InsertSort(), a-5#8  
new BubbleSort(), gkx<<)y l  
new SelectionSort(), -N2m|%B  
new ShellSort(), -PiZvge  
new QuickSort(), %9t=Iu*  
new ImprovedQuickSort(), VZA>ErB  
new MergeSort(), H.2aoZ-w  
new ImprovedMergeSort(), 6~8dMy;w  
new HeapSort() k~$}&O  
}; }iB>3|\  
Z2k5qs7g  
public static String toString(int algorithm){ ` B+Pl6l)F  
return name[algorithm-1]; Pj*"2 LBW#  
} -9"[/  
piPV&ytI  
public static void sort(int[] data, int algorithm) { Jqt|' G3  
impl[algorithm-1].sort(data); 8.' THLI  
} v%Su#xq/  
NbhQ-  
public static interface Sort { 6uWPIM;  
public void sort(int[] data); #j"N5e}U  
} i$'#7U  
ogE|8`Tq^  
public static void swap(int[] data, int i, int j) { M j |"+(  
int temp = data; : DBJ2n  
data = data[j]; %TQ5#{Y  
data[j] = temp; sH)40QmO{  
} ]LSlo593  
} 0 9*?'^s4  
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