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。 X3'z'5
插入排序: YRB,jwne
FzW(An&x2
package org.rut.util.algorithm.support; /*st,P$"
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import org.rut.util.algorithm.SortUtil; =_TCtH
/** l'$AmuGj
* @author treeroot ^gNAGQYA
* @since 2006-2-2 |JrG?:n
* @version 1.0 7|H !( a'
*/ FCOSgEU
public class InsertSort implements SortUtil.Sort{ fLPB *y6
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/* (non-Javadoc) |3vQmd !2}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) * \f(E#wa
*/ ;@Ls"+g
public void sort(int[] data) { .O~)zMx
int temp; (3W<yAM+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [ UQzCqV
} ?-*_v//g
} )=8X[<^i
} _4.fT
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} Y]ZOvA5W
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冒泡排序: fNQ.FAK":
fU$zG"a_
package org.rut.util.algorithm.support; xpUaFb
HHT K{X+
import org.rut.util.algorithm.SortUtil; 8r+R~{
, Lhgv1
/** Rh,*tS
* @author treeroot MX
qH
* @since 2006-2-2 :fo%)_Jc!
* @version 1.0 Av7bp[OD
*/ e>Is$+[`7
public class BubbleSort implements SortUtil.Sort{ R$NH [Tz
WCU[]A
/* (non-Javadoc) ]yA|
m3^2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (l9U7^S"{K
*/ ]"aC
wr
public void sort(int[] data) { L1M]ya!l
int temp; lshO'I+)*
for(int i=0;i for(int j=data.length-1;j>i;j--){ BpRQG]L
if(data[j] SortUtil.swap(data,j,j-1); fXO"Mr1
} irpO(>LK
} 5,;{<\c
} ll73}v
} @yqy$I
|fq1Mn8
} N!aV~\E
F5:4 B]ZF
选择排序: iC$~v#2
V/<dHOfR\
package org.rut.util.algorithm.support; j[9xF<I
wvsTP32]
import org.rut.util.algorithm.SortUtil; %<:?{<~wH9
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/** :,6dW?mun6
* @author treeroot bvs0y7M='
* @since 2006-2-2 ,??xW{*|
* @version 1.0 r(0I>|u
*/ i$$\}2m{L
public class SelectionSort implements SortUtil.Sort { >\[sNCkf
wE;??'O'l
/* v~uQ_ae$>
* (non-Javadoc) H+\rCefba
* d8/lEmv[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SO3WOR`3
*/ hPP+lqY[
public void sort(int[] data) { 8&f}GdZh
int temp; +u:8#!X$RD
for (int i = 0; i < data.length; i++) { 'l)@MXbGL
int lowIndex = i; ?}bSQ)b
for (int j = data.length - 1; j > i; j--) { WUMx:a0!
if (data[j] < data[lowIndex]) { x]J{EA{+
lowIndex = j; XBdC/DM[
} No!P?
} y2o?a6`
SortUtil.swap(data,i,lowIndex); {FteQ@(
} tbl!{Qwx
} 6t<~. 2'
Ilsh
Jo
} `yNNpSdS1
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Shell排序: &>p2N
I?Hj,lN
package org.rut.util.algorithm.support; (SU*fD!t
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import org.rut.util.algorithm.SortUtil; 3@\vU~=P:
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/** (/Hq8o-Fw
* @author treeroot \bZbz/+D
* @since 2006-2-2 (+q?xwl!N
* @version 1.0 o#4Wn'E
*/ VEd\*
public class ShellSort implements SortUtil.Sort{ i=#r JK=
u,*$n'l]
/* (non-Javadoc) \/. Of]YQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4cTJ$" v
*/ 0`3ey*
public void sort(int[] data) { 6^s]2mMfk
for(int i=data.length/2;i>2;i/=2){ Z#3wMK~
for(int j=0;j insertSort(data,j,i); fZ 17
} e}-uU7O
} Wi'BX#xCB
insertSort(data,0,1); W9ZT=#>)[
} qL,QsRwN
#}^ZxEU
/** gh['T,
* @param data
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* @param j *B#<5<T
* @param i 5MO:hE5sm
*/ BAx)R6kS;
private void insertSort(int[] data, int start, int inc) { GL.&
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int temp; fI t:eKHr
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); s"=e(ob
} \b1I<4(
} ;yx+BaG~?
} cJGA5m/{I
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} P (_:8|E
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快速排序: (IAl$IP63s
k'xnl"q
package org.rut.util.algorithm.support; <xOpm8
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import org.rut.util.algorithm.SortUtil; 7'xT)~*$4
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/** O HR9u
* @author treeroot V89!C?.[]1
* @since 2006-2-2 7Q/v#_e(
* @version 1.0 LGgEq-
*/ |&o1i~Y
public class QuickSort implements SortUtil.Sort{ BB1'B-O
K/,
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/* (non-Javadoc) J3}^\k=p"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +pnT6kU|
*/ ;_F iiBk7(
public void sort(int[] data) { r%&hiobMYs
quickSort(data,0,data.length-1); sYYg5vL9
} BT2[@qH|qF
private void quickSort(int[] data,int i,int j){ +wY3E*hU
int pivotIndex=(i+j)/2; )Mi#{5z
file://swap T=ox;r
SortUtil.swap(data,pivotIndex,j); nsaf6y&E
qWy{{A+
int k=partition(data,i-1,j,data[j]); CDO_A \
SortUtil.swap(data,k,j); MVe5j+8
if((k-i)>1) quickSort(data,i,k-1); IhJ _Yed
if((j-k)>1) quickSort(data,k+1,j); v7\~OOoH]
*J 7>6N:-
} s^AQJ{X
/** %$:js4
* @param data !Z<GUblt
* @param i S2*-UluG
* @param j H*A)U'`
* @return ) Z0
*/ /?9e{,\s
private int partition(int[] data, int l, int r,int pivot) { Njc3X@4=
do{ YM1tP'4j@
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); aCM F[
3j
SortUtil.swap(data,l,r); c_kxjzA#
} Yn'XSV|g
while(l SortUtil.swap(data,l,r); 1;?b-FEq:
return l; dWg$yH
} 2j=3i@
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}
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改进后的快速排序: b0rC\^x
A:cc @ku
package org.rut.util.algorithm.support; z
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import org.rut.util.algorithm.SortUtil; {>5z~OV
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/** e1[kgp
* @author treeroot qdAz3iye
* @since 2006-2-2 lh(A=hn"n
* @version 1.0 5u~Ik c~
*/ kFw3'OZ,
public class ImprovedQuickSort implements SortUtil.Sort { {1#5\t>9yD
Nr|.]=K)5n
private static int MAX_STACK_SIZE=4096; -XPGl
private static int THRESHOLD=10; o5BOe1_Pw
/* (non-Javadoc) ~.VWrHC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &.K8cphj
*/ jO3Q@N0_
public void sort(int[] data) { j8hb
int[] stack=new int[MAX_STACK_SIZE]; ZT"?W $
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int top=-1; TJ?}5h5
int pivot; 2^[fUzL?
int pivotIndex,l,r; dn:g_!]p
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stack[++top]=0; O>n L;I
stack[++top]=data.length-1;
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while(top>0){ z]gxkol\
int j=stack[top--]; E4T?8TO$o%
int i=stack[top--]; P-7!\[];te
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pivotIndex=(i+j)/2; 96}/;e]@
pivot=data[pivotIndex]; `w[0q?}"`
FGy7KVR
SortUtil.swap(data,pivotIndex,j); AWh{dM
m&Ms[X
file://partition qWw@6VvoQ
l=i-1; 6X7r=w
r=j; }{bO~L7
do{ PcM:0(,G
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >^+Q`"SN
SortUtil.swap(data,l,r); >| .jG_s
} h'MX{Wm.
while(l SortUtil.swap(data,l,r); }1:jM_H)k
SortUtil.swap(data,l,j); feQ_dA q
o!sxfJKl
if((l-i)>THRESHOLD){ rYJt;/RtR}
stack[++top]=i; jcXb@FE6
stack[++top]=l-1; L7X._XBO[
} TcauCL
if((j-l)>THRESHOLD){ UF D_
stack[++top]=l+1; A!Xn^U*p
stack[++top]=j; y;;^o6Gnw
} w{I60|C]*
Q]{DhDz?+
} 7yeZ+lD
file://new InsertSort().sort(data); iMk`t:!;#"
insertSort(data); k8Qv>z
} va~:oA
/** qW?^_
* @param data yw#P<8{/[
*/ "y_$!KY%
private void insertSort(int[] data) { h*_r='
E
int temp; o'>jO.|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <2}"Y(zwKl
} &X}9D)\UJ
} Wq&TbWR
} 3j]La
0EPF;
Xx
} \n`UkxZn+
g RSM~<
归并排序: [M FV:Z
b]hRmW
package org.rut.util.algorithm.support; =1VY/sv
1?E\2t&K
import org.rut.util.algorithm.SortUtil; goRoi\z $
r/:9j(yxr
/** :d)@|SR1
* @author treeroot %+o]1R
* @since 2006-2-2 ~qFi0<-M
* @version 1.0 pC_2_,6$
*/ $Snwx
public class MergeSort implements SortUtil.Sort{ GrVvOJr
H# 2'\0u
/* (non-Javadoc) 6CY_8/:zL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "N7C7`izc
*/ n;v8Vc'
public void sort(int[] data) { -']#5p l
int[] temp=new int[data.length]; h8pc<t\6
mergeSort(data,temp,0,data.length-1); hCW8(Zt
} @ mtv2P`
B quyPG"
private void mergeSort(int[] data,int[] temp,int l,int r){ B:^5W{
int mid=(l+r)/2; {BJ[h
if(l==r) return ; dRWp/3 }
mergeSort(data,temp,l,mid); $sGX%u
mergeSort(data,temp,mid+1,r); ?y]3kU
for(int i=l;i<=r;i++){ ~Z.lvdA_5
temp=data; .6e5w1r63
} vlEd=H,LT
int i1=l; Vu~mi%UH
int i2=mid+1; ${6 ;]ye
for(int cur=l;cur<=r;cur++){ { F.Ihw
if(i1==mid+1) .'__ [|-{;
data[cur]=temp[i2++]; \W/cC'
else if(i2>r) +es.V
/
data[cur]=temp[i1++]; V%o:Qa[a
else if(temp[i1] data[cur]=temp[i1++]; c9r2kc3cy{
else jUW{Z@{U
data[cur]=temp[i2++]; v,Ep2$
} z Lf^O%zN
} oE-i`;\8
!Aj_r^[X`
} ,lL0'$k~
%S$P+B?
改进后的归并排序: /SlCcozFL~
IF5+&O
package org.rut.util.algorithm.support; 9R'rFI
\iu2rat^
import org.rut.util.algorithm.SortUtil; ',J3^h!b
PuUqWW'^
/** cN&b$8O=%
* @author treeroot y$4,r4cmR|
* @since 2006-2-2 ]C5JP~#z
* @version 1.0 O2 3f\pm&
*/ I#uJdV|x
public class ImprovedMergeSort implements SortUtil.Sort { Ji%T|KR_
&qrH
private static final int THRESHOLD = 10; "z@qG]#5
(iBBdB
/* ]9;WM.
* (non-Javadoc) N9,n/t
* Y,>])R[4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l#]Z?zW.
*/ ;v8,r#4
public void sort(int[] data) { ;}^Pfm8
int[] temp=new int[data.length]; J~n{gT<L
mergeSort(data,temp,0,data.length-1); 'T+3tGCy+
} P(A%z2Ql
0($MN]oZa
private void mergeSort(int[] data, int[] temp, int l, int r) { 15Yy&9D
int i, j, k; s-
g[B(
int mid = (l + r) / 2; W!GgtQw{F
if (l == r) ]%shs
return; 3&x_%R
if ((mid - l) >= THRESHOLD) @kI^6(.
mergeSort(data, temp, l, mid); Jw;J$
u!d
else i1|-
insertSort(data, l, mid - l + 1); ffuV$#
if ((r - mid) > THRESHOLD) l EQn2+
mergeSort(data, temp, mid + 1, r); @}aK\
else $n(@hT>?
insertSort(data, mid + 1, r - mid); S\g8(\u
s{<rc>
for (i = l; i <= mid; i++) { MEq
()}7P
temp = data; 0D$+WX
} 6j_
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for (j = 1; j <= r - mid; j++) { LT2mwJl
temp[r - j + 1] = data[j + mid]; WmOd1
} fv<($[0
int a = temp[l]; f8'&(-
int b = temp[r]; 9I^_n+E
for (i = l, j = r, k = l; k <= r; k++) { @f{)]I +f
if (a < b) { SGjaH8z
data[k] = temp[i++]; ]7'Q2OU7
a = temp; n#Z6 d`
} else { U/|B IF
data[k] = temp[j--]; LDwu?"P!
b = temp[j]; I?l*GO+pz
} F!^ Y!Y@H
} j G{xFz>x
} pwU]r
Y @pkfH
/** 7m@pdq5Ub
* @param data {*>$LlL
* @param l YR~g&E#U^
* @param i %Cb8vYz~
*/ :jB(!XH
private void insertSort(int[] data, int start, int len) { s+Ln>c'|o
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); w;r -TLf
} ?ew^%1!W.
} f,`FbT
} 3cQTl5,
} v |QFUa`
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堆排序: VY~WkSi[<
1sn!!
package org.rut.util.algorithm.support; v_)cp9d]
^>[DG]g
import org.rut.util.algorithm.SortUtil; q&
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t(Iy[-
/** !>9*$E
|
* @author treeroot *"j_3vAx
* @since 2006-2-2 G0y%_"[
* @version 1.0 B^$l]cvZ
*/ SZvw>=)a
public class HeapSort implements SortUtil.Sort{ M8S4D&vpD4
fs>0{
/* (non-Javadoc) $T]1<3\G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I2K52A+
*/ ~g>15b3
public void sort(int[] data) { _.Uz!2
MaxHeap h=new MaxHeap(); n1buE1r?
h.init(data); =eTI@pN`
for(int i=0;i h.remove(); +apIp(E+
System.arraycopy(h.queue,1,data,0,data.length); "LXLUa03
} 98o;_tU'
G?>~w[#mQR
private static class MaxHeap{ /i
DS#l\0
O&d(FJZ
void init(int[] data){ ukq9Cjs
this.queue=new int[data.length+1]; ( 9dV%#G\
for(int i=0;i queue[++size]=data; wyAqrf
fixUp(size); EX8]i,s|E
} 7fnKe2MM
} kDO6:sjR7
C'7W50b
private int size=0; :qgdn,Me
6TPcG d Z
private int[] queue; J,m.LpY
/x-Ja[kL
public int get() { UkXc7D^jwm
return queue[1]; ><`.(Z5c
} gtjgC0
EsA^P2?_+
public void remove() { Q7c_;z_
SortUtil.swap(queue,1,size--); bp$8hUNYz-
fixDown(1); alHwN^GhP
} },[S 9I`p
file://fixdown uvD6uIW<
private void fixDown(int k) { %,~; w0
int j; JR7~|ov
while ((j = k << 1) <= size) { $.V(_
if (j < size %26amp;%26amp; queue[j] j++; as
o8
if (queue[k]>queue[j]) file://不用交换
LFGu|](
break; ,,BNUj/:
SortUtil.swap(queue,j,k); lh?mN3-*
k = j; 0FTiTrTn
} 2Ni{wg"
} VFA1p)n
private void fixUp(int k) { s/Q}fW$ex
while (k > 1) { -uO< ]
int j = k >> 1; [HQ17
if (queue[j]>queue[k]) 9n8;eE08
break; PMXnupt
SortUtil.swap(queue,j,k); "NC(^\l/
k = j; UPN2p&gM
} nwcT8b87J
} mpr["C"l
:GL|:
}
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F)DL/';
} H@aCo(#
Ux zwgVT
SortUtil: ]e?*7T]
r OB\u|Pg
package org.rut.util.algorithm; nV']^3b
IwWo-WN7.
import org.rut.util.algorithm.support.BubbleSort; /_jApZz
import org.rut.util.algorithm.support.HeapSort; T("Fh}
import org.rut.util.algorithm.support.ImprovedMergeSort; NG5H?hVN=
import org.rut.util.algorithm.support.ImprovedQuickSort; 5bZ`YO
import org.rut.util.algorithm.support.InsertSort; 2$1rS}}
import org.rut.util.algorithm.support.MergeSort; Ej.D!@
import org.rut.util.algorithm.support.QuickSort; :nZ*x=aq
import org.rut.util.algorithm.support.SelectionSort; jN5Sc0|b
import org.rut.util.algorithm.support.ShellSort; |G%MiYd
dF1Bo
/** OQ!mL3f
* @author treeroot Hyee#fB
* @since 2006-2-2 1egryp
* @version 1.0 -P'>~W,~
*/ 39~fP)
public class SortUtil { q &jW{
public final static int INSERT = 1; tQ2*kE
public final static int BUBBLE = 2; 8oA6'%.e
public final static int SELECTION = 3; WNL3+
public final static int SHELL = 4;
-U*XA
public final static int QUICK = 5; xZ9y*Gv\=
public final static int IMPROVED_QUICK = 6; \V:
_Zs
public final static int MERGE = 7; A9lqVMp64
public final static int IMPROVED_MERGE = 8; rZpc"<U
public final static int HEAP = 9; YrZAy5\
hk,Q=};
public static void sort(int[] data) { ?cg+RNI
sort(data, IMPROVED_QUICK); If4YqBG
} M6DyOe<
private static String[] name={ G9VzVx#T#
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" CqrmdWN
}; .v;2Q7X
h)A+5^:^
private static Sort[] impl=new Sort[]{ 70KXBu<6
new InsertSort(), {v]>sn;P1
new BubbleSort(), >O\-\L
new SelectionSort(), 9=JU&/!
new ShellSort(), \vm'D'9
new QuickSort(), c#{<|
.
new ImprovedQuickSort(), 8,kbGlSD
new MergeSort(), #+_OyZ*
new ImprovedMergeSort(), vZ|-VvG
new HeapSort() I;mtyS
}; 4]
DmgOru%
p1Lx\
public static String toString(int algorithm){
EQ=Enw1[
return name[algorithm-1]; \=5CNe
} [N7[%iQ%
AvV.faa
public static void sort(int[] data, int algorithm) { p=405~
impl[algorithm-1].sort(data); WtlIrdc
} C<n.C*o
Ho"FB|e
public static interface Sort { 9"V27"s
public void sort(int[] data); 8E0Rg/DnT
} KE5f`h
x$s #';*
public static void swap(int[] data, int i, int j) { _=}Y
lR
int temp = data; H56e#:[$
data = data[j]; Ir}&|"~H
data[j] = temp; Nw|Lrn*h!
} rp1u
} IFv2S|