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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。 1fpQLaT  
插入排序: Evedc*z~P  
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package org.rut.util.algorithm.support; 0N $v"uX@  
U|IzXQX(  
import org.rut.util.algorithm.SortUtil; b:TLV`>/&  
/** HhvdqvIEG  
* @author treeroot !wNr3LG  
* @since 2006-2-2 NfjE`  
* @version 1.0 FY#C.mL  
*/ 2+e}*&iQpp  
public class InsertSort implements SortUtil.Sort{ MB]<Dyj,  
EwvoQ$#jv  
/* (non-Javadoc) [D\k^h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `~By)?cT_>  
*/ ++`0rY%  
public void sort(int[] data) { =`H@%  
int temp; sM `DL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =Jyu4j *}  
} CDK 5  
} /}b03  
}  +|n*b  
BHU6t<G  
} e#$]Y?,  
w"Gm;B4  
冒泡排序: S.-TOE  
_x(o*v[Pt  
package org.rut.util.algorithm.support; kuszb~`zPY  
BBwy,\o#  
import org.rut.util.algorithm.SortUtil; *zb Nd:i9  
Krqtf  
/** W{6|tx)  
* @author treeroot Z`ID+  
* @since 2006-2-2 (MxQ+D\  
* @version 1.0 R{<kW9!  
*/ ^/I 7|u]  
public class BubbleSort implements SortUtil.Sort{ FWrX3i  
6xTuNE1  
/* (non-Javadoc) &=] ~0$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -*Xa3/kQ  
*/ r*2+xDoEi  
public void sort(int[] data) { CQF:Rnb  
int temp; G\2 CR*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Y']\Jq{OS  
if(data[j] SortUtil.swap(data,j,j-1); ` Mjj@[  
} . qO@Q=  
} H<i]V9r  
} 1"MhGNynB>  
} snE8 K}4  
bnf'4PAt  
} )~)J?l3 {  
LDgrR[  
选择排序: !/'t5~x[  
\A 2r]  
package org.rut.util.algorithm.support; } gyj0  
P{kur} T  
import org.rut.util.algorithm.SortUtil; ^a0um/+M}  
+h|`/ &,  
/** AVlhNIr  
* @author treeroot +\d56j+D  
* @since 2006-2-2 Gw/Pk4R  
* @version 1.0 )WNzWUfn=z  
*/ CGW.I$u  
public class SelectionSort implements SortUtil.Sort { ]sf7{lVT  
a!6{:8Zi0  
/* 6iVxc|Ia  
* (non-Javadoc) (y=C_wvqZ  
* EH+"~-v)ae  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _C%3h5  
*/ ysQ_[ ]/  
public void sort(int[] data) { Qp)v?k ]  
int temp; EizKoHI-z  
for (int i = 0; i < data.length; i++) { + [iQLM?zo  
int lowIndex = i; g0xuxK;9c  
for (int j = data.length - 1; j > i; j--) { @>r._ ~  
if (data[j] < data[lowIndex]) { k^3>Y%^1  
lowIndex = j; |7'df&CA  
} 5;tD"/nz  
} x[FJgI'r  
SortUtil.swap(data,i,lowIndex); nsu@h  
} |HiE@  
} Q3kdlxXR  
u 1J0$  
} ,?J!  
 U f:`  
Shell排序: <T` 7%$/E  
j+i\bks  
package org.rut.util.algorithm.support; so,t   
$SlIr<'*"  
import org.rut.util.algorithm.SortUtil; q}i]'7  
!a{^=#qq&I  
/** )tC5Hijq,  
* @author treeroot 3@etRd;]Kr  
* @since 2006-2-2 29;?I3< *  
* @version 1.0 =6j&4p `  
*/ jZu[n)u'C  
public class ShellSort implements SortUtil.Sort{ F%@A6'c  
L7n D|  
/* (non-Javadoc) l.q&D< _  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9g9HlB&Ze  
*/ Xpr?Kgz  
public void sort(int[] data) { Y xr>"KH6a  
for(int i=data.length/2;i>2;i/=2){ T:27r8"Rh  
for(int j=0;j insertSort(data,j,i); OV1_|##LC  
} 0z`a1 %U  
} 0!4Ts3qn1  
insertSort(data,0,1); I:=S 0&%)  
} *z5.vtfu!  
n<Z({\9&H  
/** 0pZ4BZdT|  
* @param data d6Ht2  
* @param j vDp8__^  
* @param i +Zb;Vn4  
*/ $iN"9N%l  
private void insertSort(int[] data, int start, int inc) { ]Z>}6!  
int temp; ;@mS^ik")$  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /MIe(,>Uh  
} 8EZ$g<}  
} qLO4#CKCL6  
} Xe3U`P7(  
R4[N:~Z$|  
} oI?3<M^  
S(k3 `;K  
快速排序: ^%d\qd`   
YX!{P=Ua  
package org.rut.util.algorithm.support; n7zm>&  
hwPw]Ln/  
import org.rut.util.algorithm.SortUtil; 4.k0<  
lS"T4 5  
/** ^ sOQi6pL  
* @author treeroot =J18eH!]  
* @since 2006-2-2 {JO^ tI  
* @version 1.0 q;B4WL}  
*/ h\$$JeSV]  
public class QuickSort implements SortUtil.Sort{ #Vnkvvv  
kDEXN  
/* (non-Javadoc) x,'(5*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &u]8IEv}u  
*/ } +TORR?  
public void sort(int[] data) { a[>/h3  
quickSort(data,0,data.length-1); wx]0p  
} IQAZuN"<  
private void quickSort(int[] data,int i,int j){ 4svBzZdr  
int pivotIndex=(i+j)/2; O\ GEay2  
file://swap =Z{O<xw'  
SortUtil.swap(data,pivotIndex,j); WQx?[tW(U  
^-TE([bW  
int k=partition(data,i-1,j,data[j]); 7LfAaj  
SortUtil.swap(data,k,j); )!3V/`I  
if((k-i)>1) quickSort(data,i,k-1); /,BD#|  
if((j-k)>1) quickSort(data,k+1,j); s,"]aew  
?so=;gh  
} mu\6z_e  
/** ]V[q(-Jk  
* @param data a1g,@0s  
* @param i 5 )A1\  
* @param j X@--m6-  
* @return ^3G{|JB!+  
*/ kYM~d07 V  
private int partition(int[] data, int l, int r,int pivot) { \e:7)R2<!x  
do{ m~w[~flgZ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); A9[ F  
SortUtil.swap(data,l,r); R#s )r  
} E7WK (  
while(l SortUtil.swap(data,l,r); >Ifr [  
return l; I:E`PZ  
} MH =%-S   
FDv<\2+ c  
} X1:V<,}"  
a Fl;BhM  
改进后的快速排序: i"1Mfz~e  
O+nEXS\rQ  
package org.rut.util.algorithm.support; @T@< _ ?)  
v>6"j1Z  
import org.rut.util.algorithm.SortUtil; ~Sdb_EZ  
^dI424  
/** 5A,K6f@:g  
* @author treeroot ,j#XOy`mzy  
* @since 2006-2-2 V"[g.%%Y  
* @version 1.0 ; 8_{e3s  
*/ <h!_>:2L  
public class ImprovedQuickSort implements SortUtil.Sort { &r[`>B{tP  
bpOYHc6,*`  
private static int MAX_STACK_SIZE=4096; Ij 79~pn  
private static int THRESHOLD=10; -r!. 9q  
/* (non-Javadoc) d|jNf</`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xn?a. 3b'  
*/ FW;m\vu  
public void sort(int[] data) { @hl.lq  
int[] stack=new int[MAX_STACK_SIZE]; FX;QG94!  
~Q*%DRd&Z-  
int top=-1; t;){D:]k  
int pivot; y>S.?H:P  
int pivotIndex,l,r; {Je[ZQ$  
M "ui0 ac  
stack[++top]=0; R%Hi+#/dr-  
stack[++top]=data.length-1; :Oy%a'w   
J.3u^~zy  
while(top>0){ "N;`1ce  
int j=stack[top--]; XUrXnz|>  
int i=stack[top--]; mR!1DQ.\<  
HsxVZ.dS  
pivotIndex=(i+j)/2; NxfOF  
pivot=data[pivotIndex]; []D&bYpv  
] ;KJ6  
SortUtil.swap(data,pivotIndex,j); N[?N5~jG  
/9 3M*b  
file://partition n*o-Lo+Fe.  
l=i-1; f0!))/rSD  
r=j; ~cWAl,(B<F  
do{ %Celc#v  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  Ii6<b6-  
SortUtil.swap(data,l,r); AWcLUe{  
} 5sdn[Tt##  
while(l SortUtil.swap(data,l,r); 4"GR] X  
SortUtil.swap(data,l,j); W,D4.w$@'  
Ig$(3p  
if((l-i)>THRESHOLD){ ?llXd4  
stack[++top]=i; i|c'Lbre`  
stack[++top]=l-1; U1Q:= yD  
} rUTcpGH  
if((j-l)>THRESHOLD){ }pDqe;a{  
stack[++top]=l+1; XWDL5K  
stack[++top]=j; Ltv]pH}YN  
} \Bz_p'[G  
Y21g{$~Q{  
} % BVs47g  
file://new InsertSort().sort(data); PYiU_  
insertSort(data); md=TjMaY  
} JELT ou  
/** \$R_YKGf1G  
* @param data {]*c29b>  
*/ hZdoc<  
private void insertSort(int[] data) { `CBZhI%%  
int temp; "/yC@VC>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DP[IZ C  
} B{/R: Hm  
} WJ$bf(X*  
} SII;n2[Ze  
v>:Ur}u!D  
} fJ5iS  
D!@Ciw  
归并排序: Yf:IKY  
5c9^-|-T  
package org.rut.util.algorithm.support; ^"2i   
~Uu4=  
import org.rut.util.algorithm.SortUtil; e%@'5k\SK  
0\H\lKcK  
/** |<HPn4 ,X  
* @author treeroot wYd b*"R  
* @since 2006-2-2 QFE:tBHe  
* @version 1.0 6O|@xvg  
*/ oOnop-z7  
public class MergeSort implements SortUtil.Sort{ .RE:;<|w  
2^Eg9y'  
/* (non-Javadoc) fA&k`L(y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k@\ iGqo  
*/ VX].3=T8  
public void sort(int[] data) { >i_ 2OV  
int[] temp=new int[data.length]; j@=%_^:i  
mergeSort(data,temp,0,data.length-1); R}'bP  
}  R(!s  
@V(*65b2  
private void mergeSort(int[] data,int[] temp,int l,int r){ B+Rm>^CBm  
int mid=(l+r)/2; ^tqzq0  
if(l==r) return ; @u.58H& }R  
mergeSort(data,temp,l,mid); WeJl4wF  
mergeSort(data,temp,mid+1,r); ` w=>I  
for(int i=l;i<=r;i++){ cT<1V!L4  
temp=data; %huRsQ %}  
} +Um( h-;  
int i1=l; *e<[SZzYZ  
int i2=mid+1; gGvz(R: y  
for(int cur=l;cur<=r;cur++){ |"?M1*g  
if(i1==mid+1) FI[A[*fi  
data[cur]=temp[i2++]; 3Q"<<pi!~  
else if(i2>r) b $'FvZbk  
data[cur]=temp[i1++]; +GG9^:<yr  
else if(temp[i1] data[cur]=temp[i1++]; *Tas`WA  
else #~#R-   
data[cur]=temp[i2++]; bmJ5MF]_fG  
} _|iSF2f,X  
} KmMzH`t}`  
m/Oh\KlIl  
} 4 kn|^  
(gEBOol  
改进后的归并排序: N< |@ymi  
O#b6mKPt;t  
package org.rut.util.algorithm.support; N+++4;  
! _f9NK  
import org.rut.util.algorithm.SortUtil; YT8vP~  
5}:-h>  
/** ?u-|>N>  
* @author treeroot 1jCLO}  
* @since 2006-2-2 Mc=$/ o  
* @version 1.0 OJ,`  
*/ uPhK3nCGo  
public class ImprovedMergeSort implements SortUtil.Sort { t,,k  
6tXq:  
private static final int THRESHOLD = 10; !i{aMxUP  
Q(@U2a8  
/* 3cFf#a#  
* (non-Javadoc) AZ0;3<FfLp  
* H+1-]'g`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _/F7 ?^j  
*/ Hx#;Z  
public void sort(int[] data) { jB`,u|FG  
int[] temp=new int[data.length]; AB=daie  
mergeSort(data,temp,0,data.length-1); RzBF~2 >i  
} _XG/Pp)  
4 K!JQ|9  
private void mergeSort(int[] data, int[] temp, int l, int r) { U@g4w!$r  
int i, j, k; n.T&}ZPz\v  
int mid = (l + r) / 2; @$lG@I,[  
if (l == r) }#.L7SIJ<J  
return; y603$Cv  
if ((mid - l) >= THRESHOLD) jNTjSX  
mergeSort(data, temp, l, mid); /~}}"zx&  
else `Zf^E >)  
insertSort(data, l, mid - l + 1); >Nvjl~o5  
if ((r - mid) > THRESHOLD) 8WtsKOno  
mergeSort(data, temp, mid + 1, r); PRr2F-!P  
else (}a8"]Z  
insertSort(data, mid + 1, r - mid); TFH\K{DM  
mk1bcK9  
for (i = l; i <= mid; i++) { DSC$i|  
temp = data; wLmhy,  
} Nd`%5%'::  
for (j = 1; j <= r - mid; j++) { b@rVo;  
temp[r - j + 1] = data[j + mid]; }'""(,2  
} 2HpHxVJ  
int a = temp[l]; vk+VP 1D  
int b = temp[r]; |rJ=Ksc  
for (i = l, j = r, k = l; k <= r; k++) { t0o`-d(  
if (a < b) { 21 O'M  
data[k] = temp[i++]; >*]Hq.&8  
a = temp; '>&^zgr  
} else { q;QbUO  
data[k] = temp[j--]; !u_Y7i3^  
b = temp[j]; ;gBRCZ  
} PUF/#ck  
} 'ixwD^x  
} hJn%mdx~w|  
bLe <G  
/** *+-}P|S:  
* @param data 3AQZRul  
* @param l dls ss\c^M  
* @param i WOQP$D9  
*/ 4kG,*3 &2  
private void insertSort(int[] data, int start, int len) {  86(I^=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); n;(\5{a  
} `wus\&!W  
} h(M#f7'~&  
} kB/D!1 "  
} KMU4n-s"o  
? i( %  
堆排序: O J/,pLYu  
"i U}]e0  
package org.rut.util.algorithm.support; K@#(*."  
@c<3b2  
import org.rut.util.algorithm.SortUtil; J13>i7]L%  
kD*2~Z?;  
/** !'mq ?C=  
* @author treeroot wW#}:59}  
* @since 2006-2-2 c.,2GwW  
* @version 1.0 c}y [[EX  
*/ Z0o~+Ct$  
public class HeapSort implements SortUtil.Sort{  AT9q3  
Eve.QAl|  
/* (non-Javadoc) cJ1#ge%4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R,F[XI+=N  
*/ *Txl+zTY  
public void sort(int[] data) { `0P$#5?  
MaxHeap h=new MaxHeap(); )=AHf?hn  
h.init(data); <FWF<r3F  
for(int i=0;i h.remove(); PNaay:a|  
System.arraycopy(h.queue,1,data,0,data.length); :cq9f2)  
} 0TGLM#{  
>S'17D  
private static class MaxHeap{ +RnkJ* l  
J(c{y]`J  
void init(int[] data){ YN`H BFH  
this.queue=new int[data.length+1]; 1_\;- !t  
for(int i=0;i queue[++size]=data; !1q 9+e  
fixUp(size); E}sO[wNPf  
} dHK`eS$sb  
} S zUpWy&  
>TQH|}|6(y  
private int size=0; xKQ+{"?-^g  
Hm$=h>rY9[  
private int[] queue; NX|v=  
QNA RkYY~|  
public int get() { 1jc, Y.mP  
return queue[1]; yqi^>Ce0  
} "FTfk  
f. FYR|%tq  
public void remove() { SE),":aY  
SortUtil.swap(queue,1,size--); ``OD.aY^s  
fixDown(1); 'bo~%WA]n  
} XLL/4)  
file://fixdown [1F* bI  
private void fixDown(int k) { 'ow.=1N-  
int j; =li|  
while ((j = k << 1) <= size) { 4\6N~P86  
if (j < size %26amp;%26amp; queue[j] j++; :{oZ~<  
if (queue[k]>queue[j]) file://不用交换 Y=?yhAw  
break; P#fM:z@[  
SortUtil.swap(queue,j,k); d1U\ft:gV  
k = j; ,(;lIP  
} ~ug= {b  
} Nkp)Ax&  
private void fixUp(int k) { 6S+U&Ce\  
while (k > 1) { j{NNSi3  
int j = k >> 1; xA9:*>+>  
if (queue[j]>queue[k])  >lBD<;T  
break; (HSgEs1d  
SortUtil.swap(queue,j,k); RTv qls  
k = j; lWqrU1Sjl  
} # g_Bx  
} xj[(P$,P  
BQ @huns3  
} ]ut5S>,"  
D5:{fWVsV/  
} F$^Su<w5l  
CT1ja.\;  
SortUtil: 2AtLyN'.  
6%fKuMpK(  
package org.rut.util.algorithm; (4\d]*u5-c  
QK+(g,)_86  
import org.rut.util.algorithm.support.BubbleSort; "m^' &L  
import org.rut.util.algorithm.support.HeapSort; ^`G`phd$  
import org.rut.util.algorithm.support.ImprovedMergeSort; TEMw8@b  
import org.rut.util.algorithm.support.ImprovedQuickSort; G 2mX;  
import org.rut.util.algorithm.support.InsertSort; glDh([  
import org.rut.util.algorithm.support.MergeSort; h;-yU.(w  
import org.rut.util.algorithm.support.QuickSort; q+[Sb G&  
import org.rut.util.algorithm.support.SelectionSort; CYKr\DA  
import org.rut.util.algorithm.support.ShellSort; %zSuK8kxV  
1&P<  
/** ($L Ll;1  
* @author treeroot @"o@}9=d  
* @since 2006-2-2 #?XQ7Im  
* @version 1.0 KX}Rr7a  
*/ P1NJ^rX  
public class SortUtil { BSkDpr1C  
public final static int INSERT = 1; P0$e~=Q^4  
public final static int BUBBLE = 2; fPrLM'  
public final static int SELECTION = 3; )x]3Zq  
public final static int SHELL = 4; STglw-TC\  
public final static int QUICK = 5; +Y V|ij  
public final static int IMPROVED_QUICK = 6; BbRBT@  
public final static int MERGE = 7; A.D{.a  
public final static int IMPROVED_MERGE = 8; !xwG% {_  
public final static int HEAP = 9; 11,!XD*"  
jZ%TJ0(H  
public static void sort(int[] data) { fPR$kc h  
sort(data, IMPROVED_QUICK); CT\;xt,S  
} _ z;q9&J)  
private static String[] name={ Z(ZiFPx2Z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9W8]8sUeG  
}; PC qZNBN  
(D 9Su^:1  
private static Sort[] impl=new Sort[]{ @rHK( 25+d  
new InsertSort(), YhRWz=l  
new BubbleSort(), /5#rADOS  
new SelectionSort(), >+mD$:L  
new ShellSort(), jn: NYJv  
new QuickSort(), k2xHH$+{#=  
new ImprovedQuickSort(), 7y`}PMn  
new MergeSort(), (708H_  
new ImprovedMergeSort(), c)Ic#<e(  
new HeapSort() DaH?@Q  
}; gZEi]/8_  
5"/J^"!h  
public static String toString(int algorithm){ IQ!\w-  
return name[algorithm-1]; gaf$uT2  
} @A+RVg*=  
ex<O]kPFE  
public static void sort(int[] data, int algorithm) { suH&jE$x  
impl[algorithm-1].sort(data); siTX_`0  
} c,Euv>*`  
vm'5s]kdh  
public static interface Sort { @w>zF/  
public void sort(int[] data); 0I{gJSK.,  
} xP=/N!,#  
lKkN_ (/j  
public static void swap(int[] data, int i, int j) { S2>c#BQ  
int temp = data; 5VO;s1  
data = data[j]; .0G6flD   
data[j] = temp; CdUAy|!`R  
} N-g8}03  
} ?DH"V7bs  
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