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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。 #)i&DJ^Y  
插入排序: 5upShtC  
4%bTj,H#  
package org.rut.util.algorithm.support; Hptq,~_t  
 [y{E  
import org.rut.util.algorithm.SortUtil; g.*&BXZi  
/** {a4xF2  
* @author treeroot Pe,;MP\2  
* @since 2006-2-2 D=w9cKa  
* @version 1.0 9H$g?';  
*/ $y6rvQ 2>S  
public class InsertSort implements SortUtil.Sort{ 5fq.*1f  
cqg=8$RB  
/* (non-Javadoc) my[,w$YM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'jbMTI  
*/ RV]a%mVlM  
public void sort(int[] data) { >)%#V<{<  
int temp; 7&t~R}&|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &|,s{?z2  
} %<S7  
} 5`UJouHi  
} ;qVG \wQq  
T5{T[YdX<  
} 8dV=1O$ /  
GEi MmH?  
冒泡排序: vU9~[I`^p  
}wkaQQh  
package org.rut.util.algorithm.support; nL\ZId  
*K!7R2Rat  
import org.rut.util.algorithm.SortUtil; rIp'vy S\p  
gN\*Y  
/** s;>VeD)*)  
* @author treeroot :xN8R^(  
* @since 2006-2-2 ;Bnr=' [  
* @version 1.0 R8{e&n PE  
*/ b60[({A\s&  
public class BubbleSort implements SortUtil.Sort{ b#}t:yy  
_s@bz|yqw  
/* (non-Javadoc) (l;C%O7*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 09x+Tko9;*  
*/ \vs%U}IrO  
public void sort(int[] data) { T"A^[ r*  
int temp; u mqKFM$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ wjg}[R@!  
if(data[j] SortUtil.swap(data,j,j-1); ${0%tCE  
} d.b?! kn  
} 6o9sR)c ?  
} XL?A w  
} $OT}`Te~  
E.4n}s  
} N7+#9S5fv  
jXH0BPa,  
选择排序: aC}vJ93i  
xtu]F  
package org.rut.util.algorithm.support; %,Q;<axzi  
Yg|l?d"  
import org.rut.util.algorithm.SortUtil; $KH@,;Xz  
sMN>wbHwh[  
/** 2Z-,c;21  
* @author treeroot "?`JA7~g  
* @since 2006-2-2 B[Ix?V4yy  
* @version 1.0 kYmo7  
*/ sOjF?bCdO  
public class SelectionSort implements SortUtil.Sort { Skr iX\p  
1wU=WE(kKZ  
/* f^ywW[dF  
* (non-Javadoc) /H.(d 4C  
* ^,~N7`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T:dX4=z  
*/ qYDj*wqf  
public void sort(int[] data) { <XY;fhnB  
int temp; Iy6p>z|  
for (int i = 0; i < data.length; i++) { T&mbXMN  
int lowIndex = i; e%'z=%(  
for (int j = data.length - 1; j > i; j--) { okVp\RC  
if (data[j] < data[lowIndex]) { %zRiLcAT  
lowIndex = j; } =xI3;7  
} #%:`p9p.S  
} KuU3DTS85Z  
SortUtil.swap(data,i,lowIndex); .wM:YX'[G  
} 65;|cmjv  
} 4LJ]l:m  
8Yo-~,Gb  
} Q*,6X*W!~  
u~ Vs wXc4  
Shell排序: zZ<ns+h  
D l4d'&!  
package org.rut.util.algorithm.support; \}U[}5Pk&  
wK2yt?  
import org.rut.util.algorithm.SortUtil; <[/PyNYK  
5#yJK>a7  
/** HDa~7wE  
* @author treeroot l@~1CMyN  
* @since 2006-2-2 V@ LN 1|  
* @version 1.0 `WP@ZSC6  
*/ 0,;E.Py?.  
public class ShellSort implements SortUtil.Sort{ d*]Dv,#X  
d'x<- l9  
/* (non-Javadoc) xYT#!K1*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h85 (N  
*/ FLi(#9  
public void sort(int[] data) { M-}j9,oR`  
for(int i=data.length/2;i>2;i/=2){ =W;t@"6>2  
for(int j=0;j insertSort(data,j,i); D)f5pEq'  
} N)9pz?*V  
} %"1` NT  
insertSort(data,0,1); bnA T,v{  
} YJ &lB&xH  
2]?w~qjWm  
/** W?SP .-I  
* @param data HVtr,jg  
* @param j R-=_z 6<  
* @param i E1$Hu{  
*/  5xG|35Pj  
private void insertSort(int[] data, int start, int inc) { M"k3zK,  
int temp; D{Hh#x8Y  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^zBjG/'7  
} bE VO<x+  
} '*o7_Ez-{  
} .Z(S4wV  
stf,<W  
} +a7EsR  
U:s} /to  
快速排序: D[?k ,*  
<^H1)=tlF  
package org.rut.util.algorithm.support; Bf D,z  
\O8Y3|<  
import org.rut.util.algorithm.SortUtil; m1~qaD<DZ$  
fW_}!`:  
/** d~togTs1  
* @author treeroot yYxeNE"  
* @since 2006-2-2 5`1(}  
* @version 1.0 */0vJz%<.M  
*/ Verbmeg&n  
public class QuickSort implements SortUtil.Sort{ GnSgO-$"  
zhVa.r A  
/* (non-Javadoc) Ov0O#`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) : ;E7+m  
*/ 3i@ "D  
public void sort(int[] data) { KdBq@  
quickSort(data,0,data.length-1); !=~s/{$PE  
} .}L-c>o"o  
private void quickSort(int[] data,int i,int j){ &cv@Kihq(  
int pivotIndex=(i+j)/2; 0U>t>&,"  
file://swap *` @XKK  
SortUtil.swap(data,pivotIndex,j); %a)0?U  
@%I_&!d  
int k=partition(data,i-1,j,data[j]); >?\v@   
SortUtil.swap(data,k,j); EI?d(K  
if((k-i)>1) quickSort(data,i,k-1); RTgQ#<W8  
if((j-k)>1) quickSort(data,k+1,j); +d6Aw}*  
mkj;PYa  
} t%]^5<+X58  
/** a>&;K@  
* @param data uQ)JC 7b\  
* @param i % K9; qJ5  
* @param j cu.*4zs  
* @return 4Vb}i[</  
*/ %2rHvF=  
private int partition(int[] data, int l, int r,int pivot) { =sUl`L+w,L  
do{ /ZIJ<#o[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c&| '3i+  
SortUtil.swap(data,l,r); . BYKdxa  
} d'Ik@D]I  
while(l SortUtil.swap(data,l,r); +q`rz  
return l; t+W=2w&  
} %v`-uAy:  
uv~qK:Nw(  
} 8xD<A|  
4."o.:8x  
改进后的快速排序: uI[-P}bSc&  
&6,Yjs:T m  
package org.rut.util.algorithm.support; |d B1R%  
n!l./>N  
import org.rut.util.algorithm.SortUtil; \GbHS*\+  
Oet#wp/I  
/** 1Rb XM n  
* @author treeroot lgv-)5|O+H  
* @since 2006-2-2 ]]h:#A2  
* @version 1.0 $ +GFOO  
*/ @^y?Bh9jQ  
public class ImprovedQuickSort implements SortUtil.Sort { }ZM*[j  
He0N  
private static int MAX_STACK_SIZE=4096; `\RX~ $^  
private static int THRESHOLD=10; 7 BnenHD  
/* (non-Javadoc) 0]h8)EW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &z xBi"  
*/ &0th1-OP_  
public void sort(int[] data) { 4mM2C`I  
int[] stack=new int[MAX_STACK_SIZE];  s>*Q  
c5wkzY h  
int top=-1; "&~?Hzm  
int pivot; 5Sm5jRr  
int pivotIndex,l,r; iXG>j.w{79  
B:6sVJ  
stack[++top]=0; IQk#  
stack[++top]=data.length-1; c`$`0}  
*1o+o$hY2  
while(top>0){ quCWc2pXX  
int j=stack[top--]; >^a"Z[s[  
int i=stack[top--]; bD-/ZZz  
UgD'Bi  
pivotIndex=(i+j)/2; ['}^;Y?*o  
pivot=data[pivotIndex]; mNnw G);$  
\AtwO  
SortUtil.swap(data,pivotIndex,j); lEYT{  
<<W.x)#:  
file://partition MWn L#!  
l=i-1;   Tk v  
r=j; }{kTh%^  
do{ aaqd:N)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); O{i_?V_  
SortUtil.swap(data,l,r); &JXHDpd$a^  
} {xBjEhQm  
while(l SortUtil.swap(data,l,r);  Z$#ZYD  
SortUtil.swap(data,l,j); g+KzlS[6  
m`yn9(1Y[  
if((l-i)>THRESHOLD){ 5|~r{w)9  
stack[++top]=i; CyK$XDHa  
stack[++top]=l-1; @7HOL-i  
} +/b4@B7  
if((j-l)>THRESHOLD){ A9qO2kq7_  
stack[++top]=l+1; \9|]  
stack[++top]=j; {Hp}F!X$  
} $*v20  
!6tC[W`  
} ?CT^Zegmr  
file://new InsertSort().sort(data); PkCeV]`w  
insertSort(data); ssr)f8R#,#  
} CI~;B  
/** 5%Fn^u:  
* @param data SX?$H~A  
*/ "{ QHWZ  
private void insertSort(int[] data) { Nh\8+v*+{  
int temp; DKVt8/vq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {OhkuON  
} J6["j   
} jC Kt;lj  
} CN$A-sjZ  
^/d^$  
} ,^+R%7mv  
-g[*wN8  
归并排序: )[M<72  
*liPJ29C[  
package org.rut.util.algorithm.support; mZ5K hPvf8  
:5cu,&<Gv  
import org.rut.util.algorithm.SortUtil; @X6#$ex  
Qqhb]<z  
/** H+#wj|,+\  
* @author treeroot @aD~YtL"n  
* @since 2006-2-2 wM4g1H%s  
* @version 1.0 \]`(xxt1  
*/ Tx!m6B`Y  
public class MergeSort implements SortUtil.Sort{ +|"n4iZ!)  
DN 8pJa  
/* (non-Javadoc) B]KLn?zt5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h%w\O Z7  
*/ '3u]-GU2_  
public void sort(int[] data) { 1uge>o&  
int[] temp=new int[data.length]; UWWD8~:  
mergeSort(data,temp,0,data.length-1); rLw[y$2  
} dzv,)X  
~"r wP=<}  
private void mergeSort(int[] data,int[] temp,int l,int r){ \IZ4( Z  
int mid=(l+r)/2; vBn=bb'W  
if(l==r) return ; SQKY;p  
mergeSort(data,temp,l,mid); S7~F*CGBh  
mergeSort(data,temp,mid+1,r); 6 % y)  
for(int i=l;i<=r;i++){ vS t=Ax3]  
temp=data; $9i5<16  
} ;?lM|kK  
int i1=l; F",abp!  
int i2=mid+1; 7fzyD  
for(int cur=l;cur<=r;cur++){ oJ@PJvmR&a  
if(i1==mid+1) 5 EuJ  
data[cur]=temp[i2++]; 8Y0<lfG  
else if(i2>r) pnA]@FW  
data[cur]=temp[i1++]; WmVw>.]@~  
else if(temp[i1] data[cur]=temp[i1++]; n#4J]Z@  
else 0l1]QD+Gc5  
data[cur]=temp[i2++]; ,WDAcQ8\  
} muX4Y1M_  
} 5WJkeG ba  
:kx#];2i  
} 4b(irDT3F  
4p.{G%h  
改进后的归并排序: zT-"kK  
Okg8Ve2  
package org.rut.util.algorithm.support; =]xk-MY"|R  
VUv.Tx]Z[  
import org.rut.util.algorithm.SortUtil; >(6\ C  
rnhf(K.{3  
/** 75}u D  
* @author treeroot e/Oj T  
* @since 2006-2-2 kt3#_d^El  
* @version 1.0 KP7RrgOan&  
*/ ?ZV0   
public class ImprovedMergeSort implements SortUtil.Sort { ^oB1 &G  
8v=47G  
private static final int THRESHOLD = 10; IC-xCzR  
f>+}U;)EF  
/* wG?kcfu  
* (non-Javadoc) JiLrwPex[  
* @?=)}2=|?i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kJeOlO[  
*/ U1|4vd9  
public void sort(int[] data) { c^WBB$v  
int[] temp=new int[data.length]; '*ICGKoT  
mergeSort(data,temp,0,data.length-1); f -nC+   
} FC(cXPX}  
=+=|{l?F  
private void mergeSort(int[] data, int[] temp, int l, int r) { RH4n0 =2  
int i, j, k; DJ [#H  
int mid = (l + r) / 2; U(]5U^  
if (l == r) ,$qs9b~  
return; :(p rx   
if ((mid - l) >= THRESHOLD) <({eOh5 N  
mergeSort(data, temp, l, mid); {]Iu">*  
else U`p<lxRgQ  
insertSort(data, l, mid - l + 1); _w/N[E  
if ((r - mid) > THRESHOLD) *!Y3N<>!  
mergeSort(data, temp, mid + 1, r); JI,hy <3l0  
else .*f4e3  
insertSort(data, mid + 1, r - mid); #R PB;#{  
L0VR(  
for (i = l; i <= mid; i++) { ?HyioLO  
temp = data; "#k(V=y  
} &8i{'k,l  
for (j = 1; j <= r - mid; j++) { {=4:Tgw  
temp[r - j + 1] = data[j + mid]; q8bS@\i  
} 4KSN;G  
int a = temp[l]; FH21mwV  
int b = temp[r]; J<*Mk  
for (i = l, j = r, k = l; k <= r; k++) { MNmQ%R4jRN  
if (a < b) { 9k^=m)yS'  
data[k] = temp[i++]; iC+H;s5<  
a = temp; "wC5hj]  
} else { a&VJ YAB  
data[k] = temp[j--]; HbSx}bM_9  
b = temp[j]; K$5P_~;QL  
} `gs,JJ6N  
} Ru aJ9O  
} SfFR  
F^G`Jf  
/** DmPsltpzQ  
* @param data 64X#:t+  
* @param l :Qp/3(g e  
* @param i 3A}8?  
*/ Du4#\OK  
private void insertSort(int[] data, int start, int len) { ^Jc0c)*  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6b01xu(A[  
} r3vj o(  
} XRz6Yf(/  
} ^ 6|"=+cO\  
} \)uad5`N  
SZD2'UaG  
堆排序: 1AV1W_"  
^v5hr>m  
package org.rut.util.algorithm.support; r8 >?-P  
5g2+Ar(  
import org.rut.util.algorithm.SortUtil; 1H 6Wrik  
kDa#yN\  
/** +rP<m  
* @author treeroot k $&A  
* @since 2006-2-2 <ijmkNVS  
* @version 1.0 Z[bC@y[Wb  
*/ K3D $ hb  
public class HeapSort implements SortUtil.Sort{ '+zsj0!A  
ahv=HWX k  
/* (non-Javadoc) oA@^N4PD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mXaUWgO  
*/ @+#p: sE  
public void sort(int[] data) { .WE0T|qDX  
MaxHeap h=new MaxHeap(); ;_&L^)~P$  
h.init(data); &L~rq)r/&  
for(int i=0;i h.remove(); ?.ihWbW_  
System.arraycopy(h.queue,1,data,0,data.length); >G~;2K[  
} MA6%g} o  
obolDh a  
private static class MaxHeap{ E_rC"_Zte  
C8q-gP[  
void init(int[] data){ 8!>pFVNJf  
this.queue=new int[data.length+1]; 6D(m8  
for(int i=0;i queue[++size]=data; ,sl.:C4  
fixUp(size); 6 74X)hB  
} Qf]!K6eR  
} rWqA)j*!  
m/nn}+*C  
private int size=0; $?{zV$r1  
CI'5JOqP  
private int[] queue;  E/;YhFb[  
\c}r6xOr  
public int get() { j=S"KVp9NF  
return queue[1]; wJkkc9Rh'(  
} 2]ljm] \l  
)^sfEYoA  
public void remove() { u;g}N'"  
SortUtil.swap(queue,1,size--); [rsAY&.  
fixDown(1); )~(_[='  
} yqI|BF`  
file://fixdown ~A4WuA  
private void fixDown(int k) { CNYchE,}  
int j; ev >9P  
while ((j = k << 1) <= size) { B ;$8<  
if (j < size %26amp;%26amp; queue[j] j++; &,7(Wab  
if (queue[k]>queue[j]) file://不用交换 m 0PF"(  
break; oX ,M;;Yq  
SortUtil.swap(queue,j,k); i`L66uV  
k = j; rnE'gH(V'  
} Su#1yw>  
} +-d>Sl (  
private void fixUp(int k) { Cz)D3Df^  
while (k > 1) { ^yTN (\9  
int j = k >> 1; U$ bM:d  
if (queue[j]>queue[k]) )wd~639U  
break; xRN$cZC  
SortUtil.swap(queue,j,k); pE,BE%  
k = j; PX)qA =4q  
} ApB0)N  
} W:J00rsv=`  
MJ08@xGa  
} xpwzzO*U  
k<H&4Z)d9  
} @("AkYPj  
l !v#6#iq  
SortUtil: v^ G5 N)F  
@oNrR$7  
package org.rut.util.algorithm; ERjf.7)d  
D(|$6J 0  
import org.rut.util.algorithm.support.BubbleSort; E@KK\m \e  
import org.rut.util.algorithm.support.HeapSort; lUd,-  
import org.rut.util.algorithm.support.ImprovedMergeSort; hd-ds~ve  
import org.rut.util.algorithm.support.ImprovedQuickSort; rC16?RovQ@  
import org.rut.util.algorithm.support.InsertSort; -X \v B  
import org.rut.util.algorithm.support.MergeSort; ]du~V?N   
import org.rut.util.algorithm.support.QuickSort; H1M>60*  
import org.rut.util.algorithm.support.SelectionSort; xd<68%Cn  
import org.rut.util.algorithm.support.ShellSort; zu%pr95U  
ta(x4fP_  
/** gEu\X|7'  
* @author treeroot \O~7X0 <W  
* @since 2006-2-2 6}$cDk`dz  
* @version 1.0 ' M!_k+e  
*/ Xy +|D#b  
public class SortUtil { B#yyO>0k]  
public final static int INSERT = 1; dX=^>9hN/  
public final static int BUBBLE = 2; qFk(UazN  
public final static int SELECTION = 3; is$d<Y&F  
public final static int SHELL = 4; m<4Lo0?nS  
public final static int QUICK = 5; ZxW V ,s&p  
public final static int IMPROVED_QUICK = 6; Op{Mc$5a  
public final static int MERGE = 7; $@Fj_ N  
public final static int IMPROVED_MERGE = 8; ."O(Ig[  
public final static int HEAP = 9; ,e,{6Sg6gl  
)Be;Zw.|  
public static void sort(int[] data) { \Y$NGB=2[  
sort(data, IMPROVED_QUICK); ):@B1 yR  
} QR)eJ5<  
private static String[] name={ -(EqBr@_  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :JYOC+#q7  
}; ] W_T(C*  
OH w6#N$\  
private static Sort[] impl=new Sort[]{ 9'M_tMm5  
new InsertSort(), d?n~9_9e  
new BubbleSort(), =g:\R$lQ  
new SelectionSort(), jg(A_V  
new ShellSort(), ->(B: Cz  
new QuickSort(), zqkmsFH{  
new ImprovedQuickSort(), 1Rh&04O>VL  
new MergeSort(), t JP(eaqZ  
new ImprovedMergeSort(), y (A"g3^=  
new HeapSort() j3>< J  
}; LmE-&  
A5b}G  
public static String toString(int algorithm){ 8TZe=sD~cr  
return name[algorithm-1]; x@=7M'vr%  
} J,7\/O(`A  
vY6|V$  
public static void sort(int[] data, int algorithm) { uu>g(q?4II  
impl[algorithm-1].sort(data);  a4yU[KK  
} NO1PGen  
s5HbuyR^  
public static interface Sort { 7^F?key?  
public void sort(int[] data); /<@tbZJ*8  
} !IS ,[  
c LJCLKJ  
public static void swap(int[] data, int i, int j) { 'zaB5d~l  
int temp = data; ]2jnY&a5  
data = data[j]; G r)+O  
data[j] = temp; ]rS+v^@QH  
} C1J'. !  
} sAb|]Q((  
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