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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。 3Zeh$DZ  
插入排序: d%='W|i\p&  
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package org.rut.util.algorithm.support; 9H4NvB{  
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import org.rut.util.algorithm.SortUtil; @u}1 S1  
/** Xeo2 < @[  
* @author treeroot 'WLh D<  
* @since 2006-2-2 GH!Lu\y\  
* @version 1.0 b )mU9   
*/ \gjY h2>  
public class InsertSort implements SortUtil.Sort{ Y$ To)qo  
j)neVPf%v  
/* (non-Javadoc) w-M,@[G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z&r@c-l@  
*/ ES&"zjr$  
public void sort(int[] data) { f mQ`8b  
int temp; S>s{t=AY~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %RF9R"t$  
} {[%kn rRJ  
} r.T!R6v}  
} hs  m%o\  
C:WXI;*cr  
} +)eI8o0#  
P,/=c(5\}  
冒泡排序: ) FnJLd  
Y^~Dr|5%  
package org.rut.util.algorithm.support; )k}UjU`!  
>SR! *3$5  
import org.rut.util.algorithm.SortUtil; chr^>%Q_  
D[ -Gzqh  
/** hLf<-NM  
* @author treeroot c8cPGm#i  
* @since 2006-2-2 vUU)zZB ~  
* @version 1.0 @L ,hA v ^  
*/ 4)XZ'~|  
public class BubbleSort implements SortUtil.Sort{ 2!+saf^-,  
sF`ELrR \  
/* (non-Javadoc) &n)=OConge  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^YLk&A)X  
*/ VS{po:]A  
public void sort(int[] data) { .+ w#n<  
int temp; |6d0,muN  
for(int i=0;i for(int j=data.length-1;j>i;j--){ CtO`t5  
if(data[j] SortUtil.swap(data,j,j-1); U94Tp A6  
} O!7v&$]1  
} /) Pf ]  
} 1D/9lR,  
} Y "RjMyQh  
x&SG gl  
} !leLOi2T  
'nO%1BZj+  
选择排序: [h GS*  
mrgieb%  
package org.rut.util.algorithm.support; KkJK5dZo  
dO{a!Ca  
import org.rut.util.algorithm.SortUtil; quPNwNy  
GYq.!d@O  
/** +hJ@w-u,G  
* @author treeroot MvLmEmKb}\  
* @since 2006-2-2 6pHn%yE*  
* @version 1.0 ~RRp5x _  
*/ ca},tov&  
public class SelectionSort implements SortUtil.Sort { Vk>m/"  
XDWR ]  
/* fi6i{(K  
* (non-Javadoc) 1D6F WYV8  
* 0A}'@N@G)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~F ,mc.  
*/ -J$,W`#z  
public void sort(int[] data) { ~x:B@Ow  
int temp; CE'd`_;HLn  
for (int i = 0; i < data.length; i++) { >8*J ;(:W  
int lowIndex = i; A+:X  
for (int j = data.length - 1; j > i; j--) { !X5~!b^*  
if (data[j] < data[lowIndex]) { X{j`H\'L  
lowIndex = j; t%`GXJb  
} t[ Zoe+&  
} {|;5P.,l  
SortUtil.swap(data,i,lowIndex); ,W!v0*uxp&  
} <ETR6r  
} X<OOgC  
{O4y Y=G  
} g=T !fF=  
<]jKpJ{3N  
Shell排序: "5+x6/9b  
jC;^ 2e  
package org.rut.util.algorithm.support; 8hK\Ya:mP  
e95x,|.-_  
import org.rut.util.algorithm.SortUtil; ># {,(8\  
1m52vQSo3l  
/** 2,nVo^13}  
* @author treeroot ;U02VguC  
* @since 2006-2-2 Q>,EYb>wI  
* @version 1.0 L1'#wH  
*/ ^+hqGu]M  
public class ShellSort implements SortUtil.Sort{ O$2= Z  
]CFh0N|(L  
/* (non-Javadoc) nbVlP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Py/,Ks.q  
*/ ?G48GxJ  
public void sort(int[] data) { Y 0f"}A1  
for(int i=data.length/2;i>2;i/=2){ vU X(h.}8  
for(int j=0;j insertSort(data,j,i); Ax9a5;5WM  
} OqaVp/,  
} b*7:{ FXg  
insertSort(data,0,1); 1Rrl59}5  
} I(cy<ey+e  
o]#M8)=  
/** errT7&@,A  
* @param data OJkiTs{  
* @param j HH\6gs]u  
* @param i 3kl<~O|Fs  
*/ f^tCD'Vmi  
private void insertSort(int[] data, int start, int inc) { IwE{Zvr  
int temp; <0Mc\wy  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); V8aLPJ0_  
} ((2 g  
} h;^H*Y&`  
} 2W}f|\8MX  
3M;[.b  
} 7nzNBtk  
C;u8qVI  
快速排序: ,r&:C48 dI  
Eagl7'x  
package org.rut.util.algorithm.support; "I)*W8wTn  
dKOW5\H'  
import org.rut.util.algorithm.SortUtil; ^^ Q'AE  
8f^QO:  
/** (d L;A0L  
* @author treeroot u9t@%H)lZ  
* @since 2006-2-2 XzX-Q'i=n0  
* @version 1.0 O[N}@%HMW  
*/ *bl*R';  
public class QuickSort implements SortUtil.Sort{ k,~I>qg  
HF3W,eaqK  
/* (non-Javadoc) b V)mO@N~w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xHA6  
*/ * 5H  
public void sort(int[] data) { j2U iZLuV  
quickSort(data,0,data.length-1); (-RZ|VdYg  
} y5td o'Ex  
private void quickSort(int[] data,int i,int j){ Kc6p||<  
int pivotIndex=(i+j)/2; 2WP73:'t  
file://swap i.|zKjF'  
SortUtil.swap(data,pivotIndex,j); rQ^X3J*`  
y?ps+ce93  
int k=partition(data,i-1,j,data[j]); OZ/P@`kN.f  
SortUtil.swap(data,k,j); {Z529Ns  
if((k-i)>1) quickSort(data,i,k-1); :GXD-6}^|  
if((j-k)>1) quickSort(data,k+1,j); (BB&ZUdyv  
QbF!V%+a's  
} SMMV$;O{9  
/** DNP %]{J  
* @param data &0E>&1`7  
* @param i *u2pk>y)  
* @param j v4?qI >/  
* @return X-tc Ud  
*/ <Ae1YHUY  
private int partition(int[] data, int l, int r,int pivot) { :YZqrcr}  
do{ MH"{N "|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Mw0Kg9M  
SortUtil.swap(data,l,r); z,6X{=  
} 6D[m}/?Uy  
while(l SortUtil.swap(data,l,r); u afSz@`  
return l; ICJp-  
} xKilTh_.6  
?!N@%R>5rN  
} hdi/k!9[\  
;1S~'B&1Q  
改进后的快速排序: Mr5E\~K>s  
EJdl%j  
package org.rut.util.algorithm.support; #HMJBQ4v#  
F,t ,Ja  
import org.rut.util.algorithm.SortUtil; 9@nDXZP Y&  
=@98Gl9!  
/** U]Iypl`l  
* @author treeroot 0 i76(2  
* @since 2006-2-2 7J 0=HbH  
* @version 1.0 @Axwj   
*/ I:6N?lD4}0  
public class ImprovedQuickSort implements SortUtil.Sort { IoEIT Kd  
>dnH  
private static int MAX_STACK_SIZE=4096; jTo-xP{lC  
private static int THRESHOLD=10; j%2l%Mx(  
/* (non-Javadoc) px@:t}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q,#j *  
*/ [D]9M"L,vQ  
public void sort(int[] data) { HFJna2B`  
int[] stack=new int[MAX_STACK_SIZE]; 3DNw=Ic0k  
eYQq@lrWv  
int top=-1; t0 [H_  
int pivot; mA ^[S.!  
int pivotIndex,l,r; \#(3r1(  
th@a./h"  
stack[++top]=0; 6x1 !!X+)+  
stack[++top]=data.length-1; .qjVw?E  
s 0}OsHAj  
while(top>0){ @yBg)1AL  
int j=stack[top--]; &3 QdQ n,  
int i=stack[top--]; QJBzv|  
F9hh- "(Z  
pivotIndex=(i+j)/2; E0;KTcZi  
pivot=data[pivotIndex]; pEc|h*p8  
8PWx>}XPt  
SortUtil.swap(data,pivotIndex,j); =")}wl=s  
]K]$FX<f  
file://partition &WSxg&YG)\  
l=i-1; '#~$Od4&=  
r=j; ub C(%Y_k  
do{ QZcdfJck=+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GpjyF_L  
SortUtil.swap(data,l,r); %/l9$>{  
}  8>Y  
while(l SortUtil.swap(data,l,r); -ZTe#@J  
SortUtil.swap(data,l,j); I~LN)hqdo  
P@ gVzx)M  
if((l-i)>THRESHOLD){ a[<'%S#3x  
stack[++top]=i; XIM!]  
stack[++top]=l-1; 5XSr K  
} U@W3x@  
if((j-l)>THRESHOLD){ ~9&#7fU  
stack[++top]=l+1; `>M-J-J  
stack[++top]=j; m).S0  
} "62vwWrwO  
(=v :@\r  
} ` u#'  
file://new InsertSort().sort(data); p0 @ ,-  
insertSort(data); "}_b,5lkGK  
} X^!n'$^u  
/** {1RI!#[\  
* @param data ff.(X!  
*/ & PHejG_#  
private void insertSort(int[] data) { 3F5Y#[L`  
int temp; RlRkw+%m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8dg \_H_  
} !.(Kpcrg  
} uSZCJ#'G  
} axJuJ`+Y  
=oZHN,  
} mWOW39Ku  
>]6f!;Rt  
归并排序: :n'$Txf  
:%[=v (G[  
package org.rut.util.algorithm.support; q=NI}k  
i/ED_<_ Vg  
import org.rut.util.algorithm.SortUtil; 0GUm~zi1  
s@USJ4#  
/** l)V!0eW  
* @author treeroot ?LJDBN  
* @since 2006-2-2 2TH13k$  
* @version 1.0 >FO4]  
*/ 3\x@G)1  
public class MergeSort implements SortUtil.Sort{ `Gct_6  
Lk?%B)z  
/* (non-Javadoc) Y ^s_v_s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |eN#9Bm  
*/ A 1b</2  
public void sort(int[] data) { DuESLMhz  
int[] temp=new int[data.length]; UKYQ @m  
mergeSort(data,temp,0,data.length-1); F32N e6Y6"  
} q|An  
zf@gAvJ  
private void mergeSort(int[] data,int[] temp,int l,int r){ N?xZ]?T  
int mid=(l+r)/2; )e#KL$B)v  
if(l==r) return ; ~0}gRpMW  
mergeSort(data,temp,l,mid); PUt\^ke  
mergeSort(data,temp,mid+1,r); C$"N)6%q  
for(int i=l;i<=r;i++){ Y(aEp_kV  
temp=data; !+sC'/  
} RMinZ}/  
int i1=l; s)Gnj;  
int i2=mid+1; bYPkqitqz  
for(int cur=l;cur<=r;cur++){ U3Fa.bC6}  
if(i1==mid+1) 2nNBX2 o&_  
data[cur]=temp[i2++];  8*nv+  
else if(i2>r) w_c)iJ  
data[cur]=temp[i1++]; y^PQgzm]  
else if(temp[i1] data[cur]=temp[i1++]; d:Y!!LV-@L  
else UL9]LEGG  
data[cur]=temp[i2++]; @vsgmz  
} nWfzwXP>_  
} oXC|q-(C  
4Zz%vY  
} 06ndW9>wD)  
0c2O'&$au  
改进后的归并排序: U0%T<6*H  
[/h3HyZ.  
package org.rut.util.algorithm.support; 9v\x&h  
vY 0EffZ  
import org.rut.util.algorithm.SortUtil; 0P{^aSxTP  
U2v;[>=]  
/** [HRry2#s  
* @author treeroot \a<7DTV  
* @since 2006-2-2 e"Y ( 7<  
* @version 1.0 :;Lt~:0b~  
*/ CbvP1*1  
public class ImprovedMergeSort implements SortUtil.Sort { [Lck55V+Q  
xq6 eu 9   
private static final int THRESHOLD = 10; d#-scv}s5  
:n#8/'%1  
/* #$5"&SM  
* (non-Javadoc) ;(&$Iw9X  
* X8}m %  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WqX$;' }h  
*/ UL{+mp  
public void sort(int[] data) { 6tx5{Xl-o  
int[] temp=new int[data.length]; y4\(ynk  
mergeSort(data,temp,0,data.length-1); JfOBZQ  
} a&^HvXO(>(  
x;^DlyyYU  
private void mergeSort(int[] data, int[] temp, int l, int r) { fL^$G;_?3  
int i, j, k; !.2tv  
int mid = (l + r) / 2; =3h?!$#?  
if (l == r) DOaTp f  
return;  :EGvI  
if ((mid - l) >= THRESHOLD) (:(Im k;9  
mergeSort(data, temp, l, mid); _i3?;Fds  
else "[wkjNf%  
insertSort(data, l, mid - l + 1); ojc m%yd  
if ((r - mid) > THRESHOLD) w3 n6md  
mergeSort(data, temp, mid + 1, r); v}cTS@0  
else 1>c^-"#e^  
insertSort(data, mid + 1, r - mid); D(;jv="/  
o+],L_Ab  
for (i = l; i <= mid; i++) { VQ R E ]  
temp = data; {6I)6}w!k  
} ,`pUz[wl  
for (j = 1; j <= r - mid; j++) { R|@?6<  
temp[r - j + 1] = data[j + mid]; +g9C klJ  
} N9dx^+\  
int a = temp[l]; La2f]+sV  
int b = temp[r]; ; b`kN;s  
for (i = l, j = r, k = l; k <= r; k++) { U/#X,Bi~  
if (a < b) { HZawB25{  
data[k] = temp[i++]; ^)nIf)9}7  
a = temp; Qi=pP/Y  
} else { kC_Kb&Q0  
data[k] = temp[j--]; YHp]O+c  
b = temp[j]; zhC#<  
} (v,g=BS,  
} W" i3:r  
} [mcER4]}  
UfkQG`G9H  
/** T5_/*`F  
* @param data I3.cy i  
* @param l cU|tG!Ij?  
* @param i ,k9xI<i  
*/ 9 df GV!Z  
private void insertSort(int[] data, int start, int len) { u|+Dqe`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Im!fZ g  
} t" $#KP<  
}  ~LF/wx>  
} &SW~4{n:  
} >^~W'etX|  
Jm`{MzqL  
堆排序: 5F78)q u6N  
g QYs,  
package org.rut.util.algorithm.support; ;S?ei>Q  
ROr|n]aJj  
import org.rut.util.algorithm.SortUtil; K2qKkV@  
O~OM.:al&  
/** S*NeS#!v  
* @author treeroot L2Fi/UWM  
* @since 2006-2-2 4*&2D-8<K  
* @version 1.0 z7s}-w,  
*/ cz41<SFL  
public class HeapSort implements SortUtil.Sort{ [{q])P;  
-PCF Om"  
/* (non-Javadoc) Ou]!@s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2dCD.9s9~  
*/ $}t;c62  
public void sort(int[] data) { 6Qn};tbnD  
MaxHeap h=new MaxHeap(); c=f;3N  
h.init(data); aeE~[m  
for(int i=0;i h.remove(); ATF>"Ux  
System.arraycopy(h.queue,1,data,0,data.length); G.~Ffk  
} gs(ZJO1 /L  
f<;eNN  
private static class MaxHeap{ &9EcgazV  
fp?/Dg"49.  
void init(int[] data){ $#-O^0D  
this.queue=new int[data.length+1]; cDq*B*e  
for(int i=0;i queue[++size]=data; .naSK`J,`  
fixUp(size); &<EixDi4q  
} K2gF;(  
} BU O8 Z]  
=@P]eK/  
private int size=0; ap<r )<u  
skF}_  
private int[] queue; bAEwjZ  
zym6b@+jN  
public int get() { 9z+ZFIf7d  
return queue[1]; YJ}9VY<}1K  
} C$d b) 5-  
_ZE&W  
public void remove() { !8|?0>3)  
SortUtil.swap(queue,1,size--); {$I1(DYN  
fixDown(1); ]VaMulb4  
} qb$M.-\ne  
file://fixdown J; N\q  
private void fixDown(int k) { fW$1f5g"  
int j; JvF0s}#4  
while ((j = k << 1) <= size) { qG3MyK%O\  
if (j < size %26amp;%26amp; queue[j] j++; k54b@U52 h  
if (queue[k]>queue[j]) file://不用交换 sZ0)f!aH:_  
break; %GGSd0 g  
SortUtil.swap(queue,j,k); N j:W6? A  
k = j; 2>g!+p Ox  
} $ve*j=p  
}  Q!(qb  
private void fixUp(int k) { SP;1XXlL  
while (k > 1) { p: u@? k  
int j = k >> 1; 7w}]9wCN?  
if (queue[j]>queue[k]) a&Me#H{  
break; juQ?k xOB  
SortUtil.swap(queue,j,k); T2TWb  
k = j; >$7{H]  
} kR <\iT0j  
} x_- SAyH  
<CWOx&hr  
} QO %;%p*  
zqLOwzMlLx  
} U:gvK 8n  
5}2148  
SortUtil: @v/ 8}n  
eC_i]q&o|  
package org.rut.util.algorithm; HE-ErEtGB  
2+yti,s+/  
import org.rut.util.algorithm.support.BubbleSort; :Aj[#4-=   
import org.rut.util.algorithm.support.HeapSort; f.:0T&%G  
import org.rut.util.algorithm.support.ImprovedMergeSort; PJAM_K;  
import org.rut.util.algorithm.support.ImprovedQuickSort; 0U! _o2]  
import org.rut.util.algorithm.support.InsertSort; TVK*l*  
import org.rut.util.algorithm.support.MergeSort; T3t w.yh  
import org.rut.util.algorithm.support.QuickSort; QG5 c>Q  
import org.rut.util.algorithm.support.SelectionSort; ,7;euV5X  
import org.rut.util.algorithm.support.ShellSort; Wf =hFc1_@  
}^`5$HEi  
/** EJ(z]M`f  
* @author treeroot NW` Mc&  
* @since 2006-2-2 REPI >-|  
* @version 1.0 =<Ss&p>  
*/ Y ^5RM  
public class SortUtil { 8 -9<r  
public final static int INSERT = 1; B3p79 j  
public final static int BUBBLE = 2; pwl7aC+6d  
public final static int SELECTION = 3; :q$.=?X3  
public final static int SHELL = 4; %1 rN6A!%  
public final static int QUICK = 5; ,qIut|C*  
public final static int IMPROVED_QUICK = 6; eIbz`|%3  
public final static int MERGE = 7; 8COGe=+o  
public final static int IMPROVED_MERGE = 8; >[<f\BN|  
public final static int HEAP = 9; TlC? ?#  
H<   
public static void sort(int[] data) { :` S\p[5  
sort(data, IMPROVED_QUICK); <-HWs@8#  
} JTTI`b2l_  
private static String[] name={ e09QaY  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "sed{?  
}; X\5EF7:S  
!(sL  
private static Sort[] impl=new Sort[]{ G;]zX<2^3  
new InsertSort(), 8< "lEL|  
new BubbleSort(), *rC%nmJwk!  
new SelectionSort(), 7=HpEc  
new ShellSort(), BX2}ar  
new QuickSort(), FLQ^J3A,I  
new ImprovedQuickSort(), 8O0]hz  
new MergeSort(), NZ- 57Ji  
new ImprovedMergeSort(), } A}Vd:#  
new HeapSort() iThf\  
}; ' &Tz8.jp~  
LG=_>:~t>  
public static String toString(int algorithm){ q5.5%W  
return name[algorithm-1]; ^geY Ay  
} F ZN}T{<  
C <H$}f  
public static void sort(int[] data, int algorithm) { :!fU+2$`^(  
impl[algorithm-1].sort(data); W\O.[7JP  
} *7C l1o  
bK|nxL  
public static interface Sort { P?zL`czWd  
public void sort(int[] data); hYVy65Ea  
} 2lxA/.f  
Pk^V6-  
public static void swap(int[] data, int i, int j) { 3# idXc  
int temp = data; G$jw#a[L  
data = data[j]; oSH]TL2@Cd  
data[j] = temp; 1t7T\~ +F  
} UC!"1)~mt`  
} +Rq]_ sDu  
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