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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。 Wp0e?bK_  
插入排序: q<YteuZJ,  
4{:W5eT!/  
package org.rut.util.algorithm.support; $II[b-X?S  
/\%K7\  
import org.rut.util.algorithm.SortUtil; Q]';1#J\  
/** H$^b.5K  
* @author treeroot 9I a4PPEH1  
* @since 2006-2-2 +TzF*Np  
* @version 1.0 |P_\l,f8`  
*/ xZ51iD $  
public class InsertSort implements SortUtil.Sort{ [e2sUO0~r  
;CU<\  
/* (non-Javadoc) *0 ;DCUv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x*H4o{o0  
*/ \haJe~  
public void sort(int[] data) { ~~?4w.k  
int temp; "t<$ {  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @j%r6N  
} \dyJ=tg  
} _E e`Uk  
} {gE19J3  
*t;'I -1w^  
} s!\uR.  
U _~lpu  
冒泡排序: 73$^y)AvY  
4:\s.Z{!3  
package org.rut.util.algorithm.support; r( _9_%[  
P@Wi^svj  
import org.rut.util.algorithm.SortUtil; UTEUVcJ\  
w_po5[]R  
/** |kvom 4T  
* @author treeroot |bQX9|L  
* @since 2006-2-2 ,x| 4nk_  
* @version 1.0 wVvk{tS  
*/ pV:c`1\`  
public class BubbleSort implements SortUtil.Sort{ d}K"dr:W5  
SRl:+!@.  
/* (non-Javadoc) |-N\?N9"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &zsaVm8  
*/ 7xP>AU)y  
public void sort(int[] data) { s(Of EzsH=  
int temp; $oO9N^6yF  
for(int i=0;i for(int j=data.length-1;j>i;j--){ DLYk#d: q?  
if(data[j] SortUtil.swap(data,j,j-1); 0]l _qxv  
} kji*7a?y  
} )bZS0f-  
} Y`S9mGR#  
} +/60$60[z  
j2T Z`Z?a^  
} mie<jha  
tBgB>-h(  
选择排序: :CO>g=`  
od{b]HvgS  
package org.rut.util.algorithm.support; y]5O45E0  
;BV1E|j  
import org.rut.util.algorithm.SortUtil; 4P@Ak7iL(V  
^Bw2y&nN  
/** 2R&msdF   
* @author treeroot } h|1H  
* @since 2006-2-2 \*x]xc/^  
* @version 1.0 }EmNSs`$r  
*/ 6P=6E   
public class SelectionSort implements SortUtil.Sort { gc-yUH0I  
#%U5,[<a8  
/* _tZT  
* (non-Javadoc) WL4{_X  
* f&glY`s#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WjxO M\?#  
*/ "?|sC{'C4j  
public void sort(int[] data) { +0mU)4n/  
int temp; A-\OB Nh  
for (int i = 0; i < data.length; i++) { nwh7DU i  
int lowIndex = i; F}P+3IaE  
for (int j = data.length - 1; j > i; j--) { [*U6L<JI  
if (data[j] < data[lowIndex]) { T]d9tX-  
lowIndex = j; h#9X0u7j  
} M]YK]VyG  
} Z@fMU2e=Z  
SortUtil.swap(data,i,lowIndex); 2xvTijO0  
} !|{T>yy  
} q"OvuHBSOn  
[psW+3{bG  
} w-l:* EV8  
yTWP1  
Shell排序: c%_I|h<?iT  
UD`bK a`E  
package org.rut.util.algorithm.support; RiC1lCE  
LutP&Ebt8  
import org.rut.util.algorithm.SortUtil; "ewSh<t  
Fyy)665x/  
/** A+*M<W  
* @author treeroot d@~Hp?  
* @since 2006-2-2 _,:gSDW|  
* @version 1.0 VSa\X~  
*/ ?sV0T)uk  
public class ShellSort implements SortUtil.Sort{ )IQa]A  
A{mv[x-XN  
/* (non-Javadoc) [V_Z9-f*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bhaIi>W~G  
*/ T!C39T  
public void sort(int[] data) { :B?C~U k  
for(int i=data.length/2;i>2;i/=2){ jovI8Dw >  
for(int j=0;j insertSort(data,j,i); UN'[sHjOnD  
} +CL`]'~;E-  
} 8SII>iL{  
insertSort(data,0,1); xMNUy B{?  
} _oK*1#Rm8  
/?<o?IR~6  
/** iIFM 5CT  
* @param data .$5QM&  
* @param j Coz\fL  
* @param i s Wk92x _l  
*/ b6sj/V8  
private void insertSort(int[] data, int start, int inc) { 7M*&^P\}es  
int temp; "w.gP8`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;5qZQ8`4  
} Q$!dPwDg  
} 2mj?&p?  
} F)_zR  
{2Jo|z  
} rnW(<t"  
NO5\|.,Z  
快速排序: KECo7i=e  
&5:83#*Oj  
package org.rut.util.algorithm.support; qScc~i Oq  
y/57 >.3  
import org.rut.util.algorithm.SortUtil; I;xrw?=\L  
8."B  
/** 4X tIMa28  
* @author treeroot EaaLN<i@0  
* @since 2006-2-2 : p# 5nYi  
* @version 1.0 |P!7T.  
*/ P%w)*);  
public class QuickSort implements SortUtil.Sort{ zvjp]yTx"  
~>v v9-_  
/* (non-Javadoc) w1tWyKq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UXpF$=  
*/ S"+X+Oxp7?  
public void sort(int[] data) { _p0@1 s(U  
quickSort(data,0,data.length-1); c'#w 8 V  
} V0 70oZ  
private void quickSort(int[] data,int i,int j){ 3%gn:.9N  
int pivotIndex=(i+j)/2; MvV\?Lzj   
file://swap |6@s6]%X}  
SortUtil.swap(data,pivotIndex,j); <k59Ni9  
=^a Ngq  
int k=partition(data,i-1,j,data[j]); Egy#_ RT{  
SortUtil.swap(data,k,j); _{$eOwB  
if((k-i)>1) quickSort(data,i,k-1); 5dwC~vn}c  
if((j-k)>1) quickSort(data,k+1,j); =+>cTV  
O^/z7,  
} D@.+B`bA  
/** ~)ut"4  
* @param data Klr+\R@(n  
* @param i >+}yI}W;e  
* @param j Z'hHXSXM  
* @return (r Tn6[ *  
*/ 4v[Zhf4JM  
private int partition(int[] data, int l, int r,int pivot) { B Oc2<M/\  
do{ Ht`kmk;I)  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $W_sIS0\z  
SortUtil.swap(data,l,r); ^&[Z@*A8#  
} GN0s`'#"3%  
while(l SortUtil.swap(data,l,r); eHX;*~e6)  
return l; RX])#=Cs  
} r2b_$  
v?6g. [;?  
} "+dByaY  
8%\0v?a5  
改进后的快速排序: X}f u $2  
4CH/~b1 (  
package org.rut.util.algorithm.support; yq6Gyoi<  
NQ3EjARZt  
import org.rut.util.algorithm.SortUtil; V'iT>  
_GW,9s^A  
/** wk9qyv<  
* @author treeroot ?"@`SEdnU2  
* @since 2006-2-2 U*Sjb% Qb  
* @version 1.0 %96l(JlJ)B  
*/ n.l7V<1  
public class ImprovedQuickSort implements SortUtil.Sort { 8~!9bg6C  
+{b3A@f|F  
private static int MAX_STACK_SIZE=4096; cLm|^j/  
private static int THRESHOLD=10; bnzIDsw!Q  
/* (non-Javadoc) v$d^>+Y#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l>D!@`><I  
*/ %=*nJvYS  
public void sort(int[] data) { VKb=)v[K  
int[] stack=new int[MAX_STACK_SIZE]; v!WkPvU  
Rm&4Pku  
int top=-1; lHI?GiB@  
int pivot; 1e)5D& njS  
int pivotIndex,l,r; 7=`_UqCV  
'7yVvd  
stack[++top]=0; qBDhCE  
stack[++top]=data.length-1; bNh~=[E  
:pw6#yi8`  
while(top>0){ ozUsp[W>  
int j=stack[top--]; MZWicfUy  
int i=stack[top--]; [,TK"  
2qDyb]9  
pivotIndex=(i+j)/2; dw YGhhm  
pivot=data[pivotIndex]; u;Rm/.  
[J\! 2\Oo  
SortUtil.swap(data,pivotIndex,j); @3_."-d  
qBF}-N_  
file://partition b{(= C 3  
l=i-1; YgR}y+q^6  
r=j; j}aU*p~N  
do{ :Oh*Q(>  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <7*d2  
SortUtil.swap(data,l,r); Lgrpy  
} EXizRL-9o  
while(l SortUtil.swap(data,l,r); EY}*}-3  
SortUtil.swap(data,l,j); H$!sK  
$0,lE+7*  
if((l-i)>THRESHOLD){ ;.I,R NM  
stack[++top]=i; >o4Ih^VB  
stack[++top]=l-1; Xu%8Q?]  
} V7)<MY  
if((j-l)>THRESHOLD){ %ou@Y`  
stack[++top]=l+1; ,r,$x4*  
stack[++top]=j; H]PEE!C;xC  
} ve*m\DU  
3Q2z+`x'  
} V]6CHE:BS  
file://new InsertSort().sort(data); _5H0<%\  
insertSort(data); m/p:W/0L  
} {:ZsUnzm  
/** 3AcCa>  
* @param data 1MxO((k  
*/ C$7dmGjZ  
private void insertSort(int[] data) { QO <.l`F  
int temp; p[:E$#W~;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uM@ve(8\  
} mE"},ksg  
} BiD}C  
} 0` UrB:  
6w*q~{"(  
} 1LonYAHF  
1D2Yued  
归并排序: gYW  
Usf7 AS=  
package org.rut.util.algorithm.support; >NAg*1  
=6< Am  
import org.rut.util.algorithm.SortUtil; nW!pOTJq21  
#uCE0}N@  
/** NG\^>.8  
* @author treeroot .;jp2^  
* @since 2006-2-2 OE5JA8/H  
* @version 1.0 sX|bp)Nw  
*/ \4"01:u'  
public class MergeSort implements SortUtil.Sort{ r>;6>ZMe  
!y-,r4\@`  
/* (non-Javadoc) Jpr`E&%I6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "t:9jU  
*/ } TsND6Ws3  
public void sort(int[] data) { Is#w=s}2  
int[] temp=new int[data.length]; A v[|G4n  
mergeSort(data,temp,0,data.length-1); GcCMCR3  
} Wv-nRDNG  
v>E3|w%  
private void mergeSort(int[] data,int[] temp,int l,int r){ v8NoD_  
int mid=(l+r)/2; CK#SD|~:  
if(l==r) return ; l t{yo\  
mergeSort(data,temp,l,mid); e2vL UlL8  
mergeSort(data,temp,mid+1,r); M\)(_I)V=  
for(int i=l;i<=r;i++){ -efB8)A  
temp=data; 2qe]1B;  
} a@niig  
int i1=l; uM74X^U  
int i2=mid+1; z3(:a'  
for(int cur=l;cur<=r;cur++){ ,R5z`O  
if(i1==mid+1) 'o% .Q x  
data[cur]=temp[i2++]; b,o@ m  
else if(i2>r) JmJNq$2#c  
data[cur]=temp[i1++]; ,c.(&@  
else if(temp[i1] data[cur]=temp[i1++]; ^K`Vqo  
else %xh A2  
data[cur]=temp[i2++]; V;%DS)-  
} Ub%1OQ  
} J>%uak<  
)R5=GHmL  
} x'hUw*  
hH*/[|z  
改进后的归并排序: *8#]3M]  
3iv;4e ;  
package org.rut.util.algorithm.support; 3{R7y  
U7le> d;L  
import org.rut.util.algorithm.SortUtil; 7B8.;0X$W  
+Qo]'xKr  
/** Mi2l BEu,  
* @author treeroot +RN|ZG&  
* @since 2006-2-2 ddG5g  
* @version 1.0 VMgO1-F  
*/ aOK,Mm:iO  
public class ImprovedMergeSort implements SortUtil.Sort { E6_.Q `!ll  
Dvz}sQZ  
private static final int THRESHOLD = 10; d|RDx;r l8  
7@l.ZECJ1  
/* !a<}Mpeg  
* (non-Javadoc) 0w<G)p~%n  
* 9#D?wR#J=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oH]"F  
*/ 3*;S%1C^  
public void sort(int[] data) { yjB.-o('  
int[] temp=new int[data.length]; DqbU$jt`  
mergeSort(data,temp,0,data.length-1); +y\mlfJ.-b  
} Y.}8lh eH  
HVkq{W|w  
private void mergeSort(int[] data, int[] temp, int l, int r) { ^7$V>|  
int i, j, k; sH `(y)`_  
int mid = (l + r) / 2; jI~GRk  
if (l == r) XTPf~Te,=  
return; 2nA/{W\hC  
if ((mid - l) >= THRESHOLD) kNDN<L  
mergeSort(data, temp, l, mid); -eSZpzp  
else fqQ(EVpQ  
insertSort(data, l, mid - l + 1); &<\i37y  
if ((r - mid) > THRESHOLD) V1!;Hvm]+  
mergeSort(data, temp, mid + 1, r); c</u]TD  
else 'X{J~fEI!  
insertSort(data, mid + 1, r - mid); ;JAb8dyS2  
 1@p'><\  
for (i = l; i <= mid; i++) { M@?,nzs K  
temp = data; ?K/N{GK%{  
} ITf, )?|]Y  
for (j = 1; j <= r - mid; j++) { \Cz uf   
temp[r - j + 1] = data[j + mid]; dlB?/J<  
} (cLcY%$  
int a = temp[l]; kjOPsz*0  
int b = temp[r]; zv[pfD7a  
for (i = l, j = r, k = l; k <= r; k++) { 'awZ-$#  
if (a < b) { |JRaskd  
data[k] = temp[i++]; <$ oI  
a = temp; ( V^C7ix:  
} else { b am*&E%0K  
data[k] = temp[j--]; Y*q_>kps"  
b = temp[j]; [S#QGB19  
} >UDb:N[  
} :jU u_s}  
} _q /UDf1  
6nP-IKL  
/** NNM+Z:  
* @param data *^_ywqp  
* @param l DgiMMmpE  
* @param i qp)a`'Pq  
*/ cJ#|mzup  
private void insertSort(int[] data, int start, int len) { 9]^ CDL  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); JC}oc M j0  
} Y9_OkcW)  
} ji :E  
} p?qW;1  
} 3Sclr/t  
VGtKW kVH  
堆排序: jUg.Y98  
u/g4s (a  
package org.rut.util.algorithm.support; q]r?s%x  
byB ESyV!O  
import org.rut.util.algorithm.SortUtil; ZuIw4u(9  
R;2q=%  
/** /ig'p53jL  
* @author treeroot NiPa-yRh  
* @since 2006-2-2 z=/xv},  
* @version 1.0 '<eeCe-  
*/ $Z!7@_Ys  
public class HeapSort implements SortUtil.Sort{ L4?)N&V  
C^W9=OH  
/* (non-Javadoc) lX*IEAc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o6LZ05Z-&  
*/ 8R;A5o,  
public void sort(int[] data) { Mu?hB{o1  
MaxHeap h=new MaxHeap(); t3b64J[A{  
h.init(data); UI}df<Ge  
for(int i=0;i h.remove(); ~|t 7  
System.arraycopy(h.queue,1,data,0,data.length); ^N`bA8  
} ZlxJY%o eu  
s1| +LT ,D  
private static class MaxHeap{ r"uOf;m  
X5`#da  
void init(int[] data){ 9u&q{I  
this.queue=new int[data.length+1]; _J+p[=[L  
for(int i=0;i queue[++size]=data; Q $5U5hb  
fixUp(size); ~DJ>)pp  
} 6}aH>(3!A  
} B]-~hP  
)of?!>'S[  
private int size=0; tbr1mw'G  
G*x"drP  
private int[] queue; 6;8Jy  
z/&2Se:  
public int get() { Yo$NE  
return queue[1]; qh<h|C]V  
} %:~LU]KX  
7[}K 2.W.  
public void remove() { ]J aV +b'O  
SortUtil.swap(queue,1,size--); 1tMs\e-  
fixDown(1); ,&X7D]  
} }&I^1BHZs  
file://fixdown yu>DVD  
private void fixDown(int k) { ~ d!F|BH4  
int j; (&y~\t] H  
while ((j = k << 1) <= size) { M]JD(  
if (j < size %26amp;%26amp; queue[j] j++; zLB7'7oP  
if (queue[k]>queue[j]) file://不用交换 X\dPQwasM  
break; 7Ne`F(c  
SortUtil.swap(queue,j,k); 4?3*%_bDJ,  
k = j; Rl2*oOVz  
} W@( EEMhw  
} O%KP,q&}Y  
private void fixUp(int k) { "\]NOA*  
while (k > 1) { y>DvD)  
int j = k >> 1; ]*M-8_D  
if (queue[j]>queue[k]) ">LX>uYmX-  
break; 1aQR9zg%  
SortUtil.swap(queue,j,k); ;jEDGKLq  
k = j; cJ> #jl&  
} ;[ag|YU$Y  
} #'<s/7;~  
$<[Q8V-  
} QlmZ4fT[r  
r?l7_aBv3  
} D0f.XWd  
NWt`X!  
SortUtil: H]XY  
~)kOO oH  
package org.rut.util.algorithm; r- :u*  
8LMO2Wyq  
import org.rut.util.algorithm.support.BubbleSort; O DLRzk(  
import org.rut.util.algorithm.support.HeapSort; bZB7t`C5  
import org.rut.util.algorithm.support.ImprovedMergeSort; !&k}YF  
import org.rut.util.algorithm.support.ImprovedQuickSort; GQP2-cSZ  
import org.rut.util.algorithm.support.InsertSort; :s}6a23  
import org.rut.util.algorithm.support.MergeSort; v9t26>{~  
import org.rut.util.algorithm.support.QuickSort; w>]?gN?8Fe  
import org.rut.util.algorithm.support.SelectionSort; eA$wJ$*   
import org.rut.util.algorithm.support.ShellSort; PDEeb.(.  
!&n'1gJ)kd  
/** BcfW94  
* @author treeroot wM"P JG  
* @since 2006-2-2 /4}B}"`Sl=  
* @version 1.0 mT7B#^H  
*/ kX2bU$1Q,i  
public class SortUtil { {H5a.+-(bE  
public final static int INSERT = 1; S?M'JoYy  
public final static int BUBBLE = 2; #9a\Ab  
public final static int SELECTION = 3; 1@}`dc  
public final static int SHELL = 4; a->;K+  
public final static int QUICK = 5; @Weim7r  
public final static int IMPROVED_QUICK = 6; 4w\@D>@}H  
public final static int MERGE = 7; /ehmy(zL  
public final static int IMPROVED_MERGE = 8; 5a PPq~%  
public final static int HEAP = 9; ~T{^7"q\  
~'[0-_]=f  
public static void sort(int[] data) { m4<5jC`-M  
sort(data, IMPROVED_QUICK); [f?fA[, [  
} X(`wj~45VX  
private static String[] name={ );]9M~$  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Cmsg'KqqT  
}; d3nMeAI AO  
8)wxc1  
private static Sort[] impl=new Sort[]{ =u5a'bp0;;  
new InsertSort(), :?*|Dp1  
new BubbleSort(), gyt[ZN_2  
new SelectionSort(), 0Q]ZS  
new ShellSort(), kT jx.  
new QuickSort(), @&AUbxoj  
new ImprovedQuickSort(), ?OYK'p.  
new MergeSort(),  <:,m  
new ImprovedMergeSort(), ^{IF2_h"  
new HeapSort() 3($cBC  
}; Z/r=4  
.]0u#fz0y  
public static String toString(int algorithm){ AO R{Xm  
return name[algorithm-1]; q$|Wxnz  
} vSOO[.=  
NM`5hd{  
public static void sort(int[] data, int algorithm) { wc%Wy|d  
impl[algorithm-1].sort(data); h2b,(  
} zXop@"(e  
biBo?k;4  
public static interface Sort { ,#u"$Hz8p  
public void sort(int[] data); _DlX F  
} _:B/XZ  
hLqRF4>L  
public static void swap(int[] data, int i, int j) { co93}A,k  
int temp = data; &tAhRMa  
data = data[j]; vpS&w  
data[j] = temp; f6I$d<  
} *v' d1.Z  
} @Nm;lZK  
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