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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。 +~lPf.  
插入排序: "(\]-%:7  
ET6}V"UD  
package org.rut.util.algorithm.support; 3|/zlKZz  
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import org.rut.util.algorithm.SortUtil; <2I<Z'B,e  
/** +6<g N[  
* @author treeroot reoCyP\!!  
* @since 2006-2-2 7V~ gqum  
* @version 1.0 D r6u0rx8  
*/ lOIf4  
public class InsertSort implements SortUtil.Sort{ -li;w tCS  
hN;$'%^  
/* (non-Javadoc) Thp!X/2O`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U owbk:  
*/ GM@0$  
public void sort(int[] data) { ITU6Eq  
int temp; {r?Ly15  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M_;hfpJZ  
} N#X(gEV  
} 95tHi re  
} ::Di  
9NC'iFQ#  
} E I&)+cC  
l9NET  
冒泡排序: m&6)Vt  
P;p20+  
package org.rut.util.algorithm.support; TaTw,K|/  
U {s T %G  
import org.rut.util.algorithm.SortUtil; =l}XKl->  
DDU)G51>d  
/** FWpb5jc)3  
* @author treeroot 6 &MATMR  
* @since 2006-2-2 W -5wjc  
* @version 1.0 X]Ma:1+  
*/ ItQ3|-^  
public class BubbleSort implements SortUtil.Sort{ ? y^t  
G5zsId dS  
/* (non-Javadoc) p+{*&Hm5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hKQg:30<  
*/ *Cx3bg*Gan  
public void sort(int[] data) { J|WkPv2  
int temp; Uv=hxV[7y  
for(int i=0;i for(int j=data.length-1;j>i;j--){ }& e#b]&:*  
if(data[j] SortUtil.swap(data,j,j-1); (d=knoo7A  
} 1Qo2Z;h@  
} ?Ns aZ  
} uhr&P4EW  
} T_4y;mf!@O  
rqi|8gKY  
} .RWKZB  
|z.Z='`  
选择排序: OQby=}A  
koOp:7r  
package org.rut.util.algorithm.support; kQ $.g<  
jb!15Vlt"  
import org.rut.util.algorithm.SortUtil; UE%~SVi.#  
lRA!  
/** !XrnD#  
* @author treeroot fGDjX!3-S  
* @since 2006-2-2 L t.Vo  
* @version 1.0 /AUXO]  
*/ ZS?4<lXF  
public class SelectionSort implements SortUtil.Sort { +Zi@+|"BCN  
$pYT#_P!/  
/* '0E^th#u-0  
* (non-Javadoc) Hd0?}w\  
* A>Oi9%OY:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;{Su:Ixg  
*/ vip& b}u  
public void sort(int[] data) { vKcc|#  
int temp; /-&a]PJ  
for (int i = 0; i < data.length; i++) { 1 c4I`#_v  
int lowIndex = i;  Qf(mn8  
for (int j = data.length - 1; j > i; j--) { TmO3hKaP  
if (data[j] < data[lowIndex]) { t(.xEl;Ma  
lowIndex = j; sRf?JyB  
} _6&TCd<  
} 9A9yZlt  
SortUtil.swap(data,i,lowIndex); Q.])En >i  
} ~;B@ {kFY)  
} '/H+  
b:>t1S Ul  
} FaE,rzn)iD  
jMB&(r  
Shell排序: !&8HA   
2ID]it\5  
package org.rut.util.algorithm.support; #MI4 `FZ  
t"L-9kCM  
import org.rut.util.algorithm.SortUtil; e8ZMB$byP  
p7d[)* L>C  
/** *^ -~J/  
* @author treeroot n*GsM6Y&  
* @since 2006-2-2 dd@-9?6M  
* @version 1.0 !Won<:.[0  
*/ _^"0"<,  
public class ShellSort implements SortUtil.Sort{ -H(\[{3{V  
K#<cuHGC  
/* (non-Javadoc) d#]XyN>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ct,|g =(  
*/ lDm0O)Dh!  
public void sort(int[] data) { pz@wbu=($4  
for(int i=data.length/2;i>2;i/=2){ Hwm] l`E]  
for(int j=0;j insertSort(data,j,i); mtg3}etA  
} A +J&(7N  
} `p)$7!  
insertSort(data,0,1); zd+<1R;  
} | ?])]F  
%N }0,a0  
/** ;wvhe;!  
* @param data ;`MKi5g  
* @param j W|aFEY  
* @param i q_ |YLs`  
*/ 5 U{}A\q  
private void insertSort(int[] data, int start, int inc) { WTP~MJ#C  
int temp; Rr/sxR|0_  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Fj~,>   
} wnoL<p  
} V:vYS  
} y&$v@]t1  
xsIuPL#_  
} XAf,k&f3  
?* %J Gz_  
快速排序: Gh#$[5&`  
S>s{t=AY~  
package org.rut.util.algorithm.support; %RF9R"t$  
nVVQ^i}`G  
import org.rut.util.algorithm.SortUtil; +8\1.vY  
*/JMPw&  
/** Y &"rf   
* @author treeroot TUV&9wKXo  
* @since 2006-2-2 |X$O'Gf#n  
* @version 1.0 Nn%[J+F  
*/ bF X0UE>  
public class QuickSort implements SortUtil.Sort{ r#CQCq  
K~B@8az  
/* (non-Javadoc) I"<ACM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -*I Dzm  
*/ Z} Ld!Byz  
public void sort(int[] data) { 9e*v&A2Y'  
quickSort(data,0,data.length-1); O0VbKW0h3  
} 3"ii_#1  
private void quickSort(int[] data,int i,int j){ } JePEmj  
int pivotIndex=(i+j)/2; (s2ke  
file://swap Y={_o!9  
SortUtil.swap(data,pivotIndex,j); `"* ]C  
lQSKY}h  
int k=partition(data,i-1,j,data[j]); )LP=IT  
SortUtil.swap(data,k,j); $ 3/G)/A  
if((k-i)>1) quickSort(data,i,k-1); Vo2{aK;  
if((j-k)>1) quickSort(data,k+1,j); |6d0,muN  
CtO`t5  
} U:n3V  
/** KPcOW#.T  
* @param data e MT5bn  
* @param i @ !UuK;  
* @param j ]a}K%D)H  
* @return nA#FGfZ{Ge  
*/ *$eMM*4  
private int partition(int[] data, int l, int r,int pivot) { ~j&#DG&L  
do{ `X06JTqf:  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~ojH$=K>d  
SortUtil.swap(data,l,r); D|`I"N[<  
} :QV-!  
while(l SortUtil.swap(data,l,r); J XKqQxZ[X  
return l;  ta\CZp  
} r#xq 8H=_m  
T3W?-,  
} L&WhX3$u  
p*_^JU(<p  
改进后的快速排序: \q0wY7w  
?'dsiA[  
package org.rut.util.algorithm.support; '%2q'LqSA  
`?fY!5BA  
import org.rut.util.algorithm.SortUtil; >*A"tk#oR  
AD ,  
/** FXi"o $N  
* @author treeroot B7 ^*xskH  
* @since 2006-2-2 -J$,W`#z  
* @version 1.0 ~x:B@Ow  
*/ \ LQ?s)~  
public class ImprovedQuickSort implements SortUtil.Sort { 6!eI=h2P  
&r)i6{w81  
private static int MAX_STACK_SIZE=4096; N^{"k,vB-  
private static int THRESHOLD=10; <oc"!c;T  
/* (non-Javadoc) xElHYh(\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4*K~6Vh  
*/ 5w# Ceg9  
public void sort(int[] data) { ?=22@Q}g  
int[] stack=new int[MAX_STACK_SIZE]; I}&`IUP  
srbU}u3VZ  
int top=-1; E mUA38  
int pivot; 1+f>tv  
int pivotIndex,l,r; +NH#t} .  
tS2Orzc>,  
stack[++top]=0; bh9!OqK9K  
stack[++top]=data.length-1; Ch~2w)HAA  
dZ1/w0<M2  
while(top>0){ rX-V0  
int j=stack[top--]; B`Q~p 92  
int i=stack[top--]; z)Is:LhS  
BO3#*J5S\  
pivotIndex=(i+j)/2; w*E0f?s  
pivot=data[pivotIndex]; Q>,EYb>wI  
L1'#wH  
SortUtil.swap(data,pivotIndex,j); ^+hqGu]M  
U=<d;2N#  
file://partition X~`<ik{q  
l=i-1; *Z+8L*k97  
r=j; jI-\~  
do{ ]Ywj@-*q  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SP,#KyWP0)  
SortUtil.swap(data,l,r); UY)e6 Zd  
} `pHlGbrW  
while(l SortUtil.swap(data,l,r); b*7:{ FXg  
SortUtil.swap(data,l,j); .fQ/a`AsU  
4!%TY4 bJ  
if((l-i)>THRESHOLD){ o]#M8)=  
stack[++top]=i; XpFo SW#K  
stack[++top]=l-1; OJkiTs{  
} HH\6gs]u  
if((j-l)>THRESHOLD){ 3kl<~O|Fs  
stack[++top]=l+1; f^tCD'Vmi  
stack[++top]=j; rM sd)  
} [%8t~zg  
rW~hFSrV[o  
} eC9nOwp]xH  
file://new InsertSort().sort(data); Jj~c&LxrO  
insertSort(data); yK$.wd 2,  
} 'q#$^ ='o  
/** 1nt VM+  
* @param data cVg!"  
*/ _* xjG \!  
private void insertSort(int[] data) { A[/_}bI|  
int temp; ,}("es\b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x"n!nT%Z  
} F|eKt/>e  
} kiW|h)w_,v  
} ]/o0p  
MQ9Nn|4  
} t3~ZGOn  
bD&^-& G  
归并排序: |Ew~3-u!  
^* xhbM;  
package org.rut.util.algorithm.support; d:U2b"k=/u  
YPjjSi:#  
import org.rut.util.algorithm.SortUtil; K%XQdMv  
$yZ(c#L  
/** 9^;)~ G  
* @author treeroot \Bg;^6U  
* @since 2006-2-2 ^x! N]  
* @version 1.0 jkPye{j  
*/ Q\P?[i]  
public class MergeSort implements SortUtil.Sort{ @E(_H$|E  
(5^bU<  
/* (non-Javadoc) @AXRKYQ{t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +YL9gNN>P  
*/ E@/yg(?d=  
public void sort(int[] data) { FD}hw9VyF@  
int[] temp=new int[data.length]; D[m+= -  
mergeSort(data,temp,0,data.length-1); [r_YQ*+ej  
} A]z~Dw3  
H%!ED1zpA  
private void mergeSort(int[] data,int[] temp,int l,int r){ Px!M^ T!Pi  
int mid=(l+r)/2; ZB+N[VJs)  
if(l==r) return ; ST#OO!  
mergeSort(data,temp,l,mid); ;3nR_6\  
mergeSort(data,temp,mid+1,r); q'07  
for(int i=l;i<=r;i++){ dSD7(s!  
temp=data; :YZqrcr}  
} MH"{N "|  
int i1=l; Mw0Kg9M  
int i2=mid+1;  #E[{  
for(int cur=l;cur<=r;cur++){ 6D[m}/?Uy  
if(i1==mid+1) u afSz@`  
data[cur]=temp[i2++]; X=:|v<E   
else if(i2>r) xKilTh_.6  
data[cur]=temp[i1++]; -,M*j|   
else if(temp[i1] data[cur]=temp[i1++]; M^i^_}~S;  
else ;1S~'B&1Q  
data[cur]=temp[i2++]; 52*9q!  
} EJdl%j  
} #HMJBQ4v#  
EFb1Y{u^\!  
} GI&XL'K&  
\S[7-:Lu^  
改进后的归并排序: E>/kNl  
U]Iypl`l  
package org.rut.util.algorithm.support; 0 i76(2  
7J 0=HbH  
import org.rut.util.algorithm.SortUtil; QKj-"y[  
`zr%+  
/** bNUb  
* @author treeroot mkA1Sh{hX>  
* @since 2006-2-2 ?w{lC,  
* @version 1.0  aOS:rC  
*/ + _=&7  
public class ImprovedMergeSort implements SortUtil.Sort { a(+.rf;  
?2Q9z-$  
private static final int THRESHOLD = 10; EcBJ-j 6d  
_[yBwh  
/* (+@ Lnz\  
* (non-Javadoc) ^E)Kse.>  
* &P+7Um(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2"31k2H[  
*/ y"|QY!fK  
public void sort(int[] data) { z9@Tg= #i  
int[] temp=new int[data.length]; $1QQidB  
mergeSort(data,temp,0,data.length-1); {Vc%ga|E  
} dQ4VpR9|;  
:Hk:Goo2  
private void mergeSort(int[] data, int[] temp, int l, int r) { .'zXO  
int i, j, k; >s@*S9cj:  
int mid = (l + r) / 2; pEc|h*p8  
if (l == r) TM|M#hMS  
return; ?tWcx;h:>  
if ((mid - l) >= THRESHOLD) <A"T_Rk  
mergeSort(data, temp, l, mid); 7Z-'@m  
else ? o@5PL  
insertSort(data, l, mid - l + 1);  E*[dc  
if ((r - mid) > THRESHOLD) 8PQn=k9  
mergeSort(data, temp, mid + 1, r); jv:!vi:  
else |N9::),<  
insertSort(data, mid + 1, r - mid); )!h(oR  
`rt  
for (i = l; i <= mid; i++) { |5uvmK  
temp = data; ;Z\1PwT  
} jOJ$QT  
for (j = 1; j <= r - mid; j++) { X!}  t``  
temp[r - j + 1] = data[j + mid]; d(.e%[`  
} Y{6vW-z_<  
int a = temp[l]; _l?InNv  
int b = temp[r]; (!-gX" <b  
for (i = l, j = r, k = l; k <= r; k++) { -E6#G[JJ  
if (a < b) { (1~d/u?2\  
data[k] = temp[i++]; 7 Jxhn!  
a = temp; 8MHYk>O~{G  
} else { H4s^&--  
data[k] = temp[j--]; =0te.io)3O  
b = temp[j]; K[tQ>C@s2  
} gWt}q-@nRR  
} hdL/zW7]  
} {K\l3_=5qb  
QEKRAPw  
/** 3F5Y#[L`  
* @param data RlRkw+%m  
* @param l 8dg \_H_  
* @param i !.(Kpcrg  
*/ uSZCJ#'G  
private void insertSort(int[] data, int start, int len) { axJuJ`+Y  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6S#Y$2 P  
} 8@Zg@>,  
} +mM=`[Z`??  
} =T73660  
} ?F{sym@i  
hlY]s &0  
堆排序: Lu.D,oP  
CqMm'6;$a}  
package org.rut.util.algorithm.support; <Fkm7ME]  
l^.d 3b  
import org.rut.util.algorithm.SortUtil; g@IV|C( *0  
Dj Z;LE>  
/**  %+\ PN  
* @author treeroot ==zt)s.G(+  
* @since 2006-2-2 j]-0m4QF  
* @version 1.0 3j'A.S  
*/ ,EkzBVgo  
public class HeapSort implements SortUtil.Sort{ W[pOLc-  
S6k R o^2  
/* (non-Javadoc) ]_Cm 5Z7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y7W xV>E  
*/ b2}>{Li0  
public void sort(int[] data) { W62 $ HI  
MaxHeap h=new MaxHeap(); v"nN[_T  
h.init(data); Bw;gl^:UG  
for(int i=0;i h.remove(); r57&F`{  
System.arraycopy(h.queue,1,data,0,data.length); 1&zvf4  
} #BB,6E   
^?pf.E!F`  
private static class MaxHeap{ ;[-OMGr]#  
YX A|1  
void init(int[] data){ []i/\0C^  
this.queue=new int[data.length+1]; 20 <$f  
for(int i=0;i queue[++size]=data; G`n|fuv  
fixUp(size); LAe>XF-5  
} 9q +I  
} @DiXe[kI  
J1i{n7f=@  
private int size=0; pbfIO47ZC  
f`r o {p  
private int[] queue; [I*)H7pt}  
w %4SNR  
public int get() { p>4tPI}bf  
return queue[1]; gYeKeW3)  
} ?q^o|Y/  
K|i:tHF]@  
public void remove() { ?]*WVjskE  
SortUtil.swap(queue,1,size--); st- z>}  
fixDown(1); hv)>HU&  
} w}8 ,ICL  
file://fixdown tcDWx:Q  
private void fixDown(int k) { t0*kL.  
int j; vY 0EffZ  
while ((j = k << 1) <= size) { 0P{^aSxTP  
if (j < size %26amp;%26amp; queue[j] j++; U2v;[>=]  
if (queue[k]>queue[j]) file://不用交换 [HRry2#s  
break; $|kq{@<  
SortUtil.swap(queue,j,k); ^Rr!YnEN  
k = j;  ?cG~M|@  
} 2C6o?*RjyY  
} i-.]onR  
private void fixUp(int k) { myq@X(K  
while (k > 1) { s$%t*T2J>  
int j = k >> 1; Ro}7ERA  
if (queue[j]>queue[k]) cTC -cgp  
break; +8<|P&fH  
SortUtil.swap(queue,j,k); )b%t4~7  
k = j; WqX$;' }h  
} UL{+mp  
} 0+-"9pED>E  
M =/+q  
} +3>)r{#k  
QN4{xf:}S  
} \d'>Ky;GD  
x;^DlyyYU  
SortUtil: _GhP{ C$  
|IcA8[  
package org.rut.util.algorithm; 0oNNEC  
L3/SIoqd  
import org.rut.util.algorithm.support.BubbleSort; ^}w@&Bje  
import org.rut.util.algorithm.support.HeapSort; _4#Mdnh}[  
import org.rut.util.algorithm.support.ImprovedMergeSort; AvmI<U  
import org.rut.util.algorithm.support.ImprovedQuickSort; 'hoEdJ]t5  
import org.rut.util.algorithm.support.InsertSort; Abw=x4d(i  
import org.rut.util.algorithm.support.MergeSort; V 4#bW  
import org.rut.util.algorithm.support.QuickSort; G '1K6  
import org.rut.util.algorithm.support.SelectionSort; N8[ &1  
import org.rut.util.algorithm.support.ShellSort; -dto46X  
;J uBybJb  
/** #QUQC2P(~  
* @author treeroot #&k`-@b5|  
* @since 2006-2-2 lU\v8!Ji  
* @version 1.0 pZ`^0#Fo  
*/ w@![rH6~F  
public class SortUtil { n 3eLIA{  
public final static int INSERT = 1; ~=P#7l\o1  
public final static int BUBBLE = 2; <r>1W~bp.q  
public final static int SELECTION = 3; \CU-a`n  
public final static int SHELL = 4; C vOH*K'  
public final static int QUICK = 5; >g>L>{  
public final static int IMPROVED_QUICK = 6; T1-.+&<  
public final static int MERGE = 7; \ u*R6z  
public final static int IMPROVED_MERGE = 8; [ML|, kq!  
public final static int HEAP = 9; kTW[)  
3>T2k }  
public static void sort(int[] data) { A"3"f8P8a  
sort(data, IMPROVED_QUICK); gmqL,H#  
} [PIh^ DhK  
private static String[] name={ 5cF7w  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" QmKEl|/{u  
}; nk*T x  
rq#\x{l  
private static Sort[] impl=new Sort[]{ h@2YQgw`  
new InsertSort(), ,q K'!  
new BubbleSort(), On~w`  
new SelectionSort(), ip+?k<]z  
new ShellSort(), e"d-$$'e  
new QuickSort(), NiSybyR$  
new ImprovedQuickSort(), _x`oab0@  
new MergeSort(), 8{- *Q(=/  
new ImprovedMergeSort(), d)WGI RUx  
new HeapSort() WvoJ^{\4N*  
}; : GdLr  
q/h , jM  
public static String toString(int algorithm){ s~NJy'Y  
return name[algorithm-1]; HhZ>/5'(  
} FyhLMW3  
O<`N0  
public static void sort(int[] data, int algorithm) { }~#Tsv  
impl[algorithm-1].sort(data); o)L)|  
} uPVO!`N3  
0{'m":D9  
public static interface Sort { z.T>=C  
public void sort(int[] data); 0sP*ChY5S  
} N|2PW ~,  
&5y|Q?  
public static void swap(int[] data, int i, int j) {  rY CIU  
int temp = data; `'E(L&  
data = data[j]; fzJ^`  
data[j] = temp; 0: Nw8J  
} @@z5v bs'{  
} >c@jl  
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