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。 /%rq
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插入排序: ,T{<vRj7_
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package org.rut.util.algorithm.support; -%c<IX>z9
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import org.rut.util.algorithm.SortUtil; X*eW#|$\
/** w|Cx>8P8@
* @author treeroot "?}uQ5f
* @since 2006-2-2 _
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U7W
* @version 1.0 `u'bRp
*/ AC%JC+
public class InsertSort implements SortUtil.Sort{ MHj,<|8Q
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/* (non-Javadoc) AG6K
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;^){|9@
*/ )Di \_/G
public void sort(int[] data) { \Q$HXK
int temp; g(x9S'H3l
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Of}|ib^t
} yx{3J
} ?knYY>Kzh1
} /*)Tl
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} =^DLywAh}u
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冒泡排序: `_X;.U.Mv
1=}qBR#scY
package org.rut.util.algorithm.support; m6mwyom.
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import org.rut.util.algorithm.SortUtil; {MdLX.ycc)
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/** ,YYVj{~2
* @author treeroot 2{,n_w?Wy
* @since 2006-2-2 9SQ4cv*2
* @version 1.0 @p=AWi}\
*/ ShOX<Fb&
public class BubbleSort implements SortUtil.Sort{ T(?HMyg3
nR;D#"p%
/* (non-Javadoc) Ddju~510
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cu!W4Ub<
*/ FqFapRX66Z
public void sort(int[] data) { h@{_duu
int temp; '])2k@o@
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6X2PYJJZ
if(data[j] SortUtil.swap(data,j,j-1); (@0O
} 24c ek
} =3~/:8o
} p>=[-(mt
} 7Z,opc
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} ^D^JzEy'?C
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选择排序: `6Qdfmk=
J8a*s`ik
package org.rut.util.algorithm.support; B?rSjdY4
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import org.rut.util.algorithm.SortUtil; i+3fhV
{:nQl}
/** ?(6m VyIe
* @author treeroot 4\ c,)U}
* @since 2006-2-2 [P4$Khu$
* @version 1.0 :wqC8&V
*/ r,P1^ uHx
public class SelectionSort implements SortUtil.Sort { (6p]ZY
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/* .9[45][FK
* (non-Javadoc) v60^4K>
* c?2MBtnu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g?v\!/~(u
*/ o\otgyoh
public void sort(int[] data) { g.JN_t5
int temp; <N,)G
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for (int i = 0; i < data.length; i++) { RPnRVJ&"Z
int lowIndex = i; iZ3W"Vd`b
for (int j = data.length - 1; j > i; j--) { !}+tdT(y
if (data[j] < data[lowIndex]) { k^ F@X
lowIndex = j; HBE.F&C88
} GV6K/T:
} ]'~vI/p
SortUtil.swap(data,i,lowIndex); `~UZU@/x
} U_l'3oPJw
} OX:O^ (-r,
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} Il@Y|hK
JPM))4YDR
Shell排序: 3=Ec"
;8S/6FI
package org.rut.util.algorithm.support; 39F
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import org.rut.util.algorithm.SortUtil; raVA?|'g~
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/** j/T>2|dA&
* @author treeroot
8@{OR"Ec
* @since 2006-2-2 tj]9~eJ-
* @version 1.0 CBQhIvq.d
*/ K
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public class ShellSort implements SortUtil.Sort{ t%zpNd2lk
lDC$F N
/* (non-Javadoc) yL^UE=#C_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H`8``#-|@S
*/ :f5s4N
public void sort(int[] data) { '$As<LOEd/
for(int i=data.length/2;i>2;i/=2){ J?JeU/:+
for(int j=0;j insertSort(data,j,i); c H-@V<
} @UBjq%z
} vkS)E0s
insertSort(data,0,1); uV-'~8
} XS0xLt=
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/** Ee1LO#^_6
* @param data E+"dqSI/v
* @param j @ ''GPL@
* @param i (\"k&O{
*/ 6ZgU"!|r
private void insertSort(int[] data, int start, int inc) { <D&)OxEn\
int temp; to8X=80-3
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &bqT/H18
} }7G8|54t
} .,~(%#Wl$
} A`}yBSb
m|=Ecu
} cw&Hgjj2
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快速排序: O9'x-A%
;
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package org.rut.util.algorithm.support; MRr</o
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import org.rut.util.algorithm.SortUtil; LAx4Xp/
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/** 0w'j+
* @author treeroot [U#72+K
* @since 2006-2-2 T&T/C@z'R
* @version 1.0 58%'UwKn
*/ ?6c-7QV
public class QuickSort implements SortUtil.Sort{ P^MOx4
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/* (non-Javadoc) >vrxP8_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '^%~JyU
*/ ~9F ,%
public void sort(int[] data) { |8%m.fY`
quickSort(data,0,data.length-1); ^ yh'lh/
} o }Tz"bN
private void quickSort(int[] data,int i,int j){ Y\],2[liF
int pivotIndex=(i+j)/2; w(L>#?
file://swap VHOfaCE
SortUtil.swap(data,pivotIndex,j); C
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int k=partition(data,i-1,j,data[j]); uUE9g
SortUtil.swap(data,k,j); x\?;=@AW
if((k-i)>1) quickSort(data,i,k-1); _$<Gyz*
if((j-k)>1) quickSort(data,k+1,j); d;Hn#2C
W$JebW<z(
} Nf+b"&Zh`
/** sUl6hX4
* @param data M)?dEgU}M
* @param i -Z4{;I[Q@
* @param j gADmN8G=
* @return #6+FY+/
*/ y#Ht{)C
private int partition(int[] data, int l, int r,int pivot) { y AF+bCXo
do{ )oo~m\`
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W$dn_9W
SortUtil.swap(data,l,r); 0Q1FL MLV
} GwsY-jf
while(l SortUtil.swap(data,l,r); y`e4;*1
return l; JXiZB
8}
} VS#wl|b8
5q{h 2).)
} L+B?~_*
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改进后的快速排序: @Un/c:n
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package org.rut.util.algorithm.support; ,!G{5FF8:
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import org.rut.util.algorithm.SortUtil; ]u-SL md
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/** W[[oSqp
* @author treeroot kI*(V[i
* @since 2006-2-2 k'`m97B
* @version 1.0 lM\LN^f5*
*/ .=9s1~]
public class ImprovedQuickSort implements SortUtil.Sort { y$Zj?Dd#
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private static int MAX_STACK_SIZE=4096; PZ:u_*Vu`
private static int THRESHOLD=10; ?tf&pgo
/* (non-Javadoc) pl*~kG=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;N+$2w
*/ dYFzye
public void sort(int[] data) { @$Qof1j'%
int[] stack=new int[MAX_STACK_SIZE]; mOll5O7VW
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int top=-1; 1Wg-x0R
int pivot; :(3|HTz
int pivotIndex,l,r; lw8"'0
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stack[++top]=0; z^*
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stack[++top]=data.length-1; <dA8
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while(top>0){ |YJCWFbs8
int j=stack[top--]; ;SwC&.I
int i=stack[top--]; >Dm8m[76
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pivotIndex=(i+j)/2;
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pivot=data[pivotIndex]; h4&;?T S
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SortUtil.swap(data,pivotIndex,j); v|Jlf$>
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file://partition &Y|Xd4:
l=i-1; x!S;SU
r=j; @}F Awv^f
do{ L/}iy}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Df07y<>7Q
SortUtil.swap(data,l,r); 1N`vCt]w
} 4YG/`P
while(l SortUtil.swap(data,l,r); KHiFJ_3
SortUtil.swap(data,l,j); \jW)Xy
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if((l-i)>THRESHOLD){ 9G?ldp8
stack[++top]=i; AH7L.L+$M
stack[++top]=l-1; "vF
MSY
} W-2i+g)
if((j-l)>THRESHOLD){ 8``;0}'PC
stack[++top]=l+1; 6y+b5-{'
stack[++top]=j; ={(j`VSUX0
} cleOsj;S
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} F:FMeg
file://new InsertSort().sort(data); l?N`{,1^
insertSort(data); >}+Q:iNQ)2
} Q ~|R Z7G
/** V%L/8Q~
* @param data g1m-+a
*/ @_'OyRd8
private void insertSort(int[] data) { Go\VfLL w
int temp; D=?{8 'R'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o.:p_(|hI
} @98;VWY\
} H>7dND2;
} kN9yO5h7
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} uK*|2U6t
/9ZcM]X B
归并排序: B:oF;~d/,
I@7/jUO
package org.rut.util.algorithm.support; r((Tavn
_j#SpL'P
import org.rut.util.algorithm.SortUtil; wvc>0?t'
'8Wv.X0`
/** _."E%|5
* @author treeroot ,TC~~EWq
* @since 2006-2-2 i s"vekC
* @version 1.0 "ORzWnE4U
*/ QEJGnl676
public class MergeSort implements SortUtil.Sort{ E:A!wS`"
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/* (non-Javadoc) J%v5d*$.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GG-[`!>.pw
*/ O&?.&h
public void sort(int[] data) { =V $j6
int[] temp=new int[data.length]; gp
mergeSort(data,temp,0,data.length-1); >Wi s.e%b
} /0==pLa4
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private void mergeSort(int[] data,int[] temp,int l,int r){ (i`(>I.(/
int mid=(l+r)/2; +cg
{[f,J;
if(l==r) return ; ~t/JCxa
mergeSort(data,temp,l,mid); [B/0-(?
mergeSort(data,temp,mid+1,r); # mT]j""
for(int i=l;i<=r;i++){ jz:gr=*z
temp=data; PnWD}'0V
} WYIw5jzC
int i1=l; F|eu<^"$ H
int i2=mid+1; pG yRX_;
for(int cur=l;cur<=r;cur++){ +$pJ5+v
if(i1==mid+1) X-Ycz 5?
data[cur]=temp[i2++]; =I4.Gf"~f
else if(i2>r) \KM|f9-b
data[cur]=temp[i1++]; F-0UdV
else if(temp[i1] data[cur]=temp[i1++]; k$[{n'\@
else 'F_}xMU
data[cur]=temp[i2++]; }=@zj6AC
} T0|H9>M
} uEd,rEB>
jMU9{Si
} I-:`cON=G
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改进后的归并排序: d'zT:g
H?:Jq\Ba0
package org.rut.util.algorithm.support; -J$g(sikt
7kz-V.
import org.rut.util.algorithm.SortUtil; 960qvz!
Fj=NiZ=
/** :,F=w0O
* @author treeroot 31XU7A
* @since 2006-2-2 `SOhG?Zo
* @version 1.0 iHz[Zw^.s
*/ \C/z%Hf7-
public class ImprovedMergeSort implements SortUtil.Sort { FMS2.E
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private static final int THRESHOLD = 10; R;THA!
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/* Fk$@Yy+}e
* (non-Javadoc) G[6=u|(M
* eTZ`q_LfI1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D44I"TgqD
*/ jOl 1_
public void sort(int[] data) { */U$sZQ)
int[] temp=new int[data.length]; V_]-`?S
mergeSort(data,temp,0,data.length-1); "jGe^+9uT
} % +8
@Z2/9K%1'
private void mergeSort(int[] data, int[] temp, int l, int r) { h544dNo&
int i, j, k; b-b;7a\N
int mid = (l + r) / 2; ^'Zh;WjI7
if (l == r) oZvG3_H4.
return; Ph\F'xROe
if ((mid - l) >= THRESHOLD) `w=!o.1
mergeSort(data, temp, l, mid); 4H9xO[iM
else 2o}8W7y
insertSort(data, l, mid - l + 1); R7t
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if ((r - mid) > THRESHOLD) Bcm=G""
mergeSort(data, temp, mid + 1, r); EEg O
else 8 )`5P\
insertSort(data, mid + 1, r - mid); bgXc_>T6_y
|vN$"mp^a
for (i = l; i <= mid; i++) { %>]#vQ|
temp = data; c=<v.J@K
} Nuo<` 6mV@
for (j = 1; j <= r - mid; j++) { ~pwY6Q
temp[r - j + 1] = data[j + mid]; Cj=J;^vf
} 8Nv-/VQ/b
int a = temp[l]; ,XP@ pi
int b = temp[r]; m"1
?
for (i = l, j = r, k = l; k <= r; k++) { -*5yY#fw}
if (a < b) { '4Y*-!9
data[k] = temp[i++]; ~M(pCSJ[
a = temp; dR?5$V(
} else { k.ww-nH
data[k] = temp[j--]; m
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b = temp[j]; +0)5H>h
} J]_)gb'1BR
} *+# k{D,
} ]dQZ8yVK
!DCVoc]pV
/** U@MOvW)
* @param data fG^7@Jw:G
* @param l Oym]&SrbS
* @param i zh?xIpY
*/ ">0 /8] l
private void insertSort(int[] data, int start, int len) { qRWJ-T:!F
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); r{c5dQ
} [ )B@
} (u$!\fE-et
} 4_Tb)?L+:
} ">rsA&hN-
3" 8t)s
堆排序: iOE9FW|e
..sJtA8
package org.rut.util.algorithm.support; _q2`m
^!XU+e+:0
import org.rut.util.algorithm.SortUtil; w`2_6[,9
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/** )2
* @author treeroot 1KNkl,E
* @since 2006-2-2 jLpgWt`8)E
* @version 1.0 Z%(Df3~gmm
*/ BIwgl@t!>
public class HeapSort implements SortUtil.Sort{ :"h
Pg]'
LD7? .
/* (non-Javadoc) OpbszSl"y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $u(M 4(}
*/ (Qw`%B
public void sort(int[] data) { Ej9/_0lt
MaxHeap h=new MaxHeap(); AiR%MD
h.init(data); IX > j8z[
for(int i=0;i h.remove(); 4C2>0O<^s
System.arraycopy(h.queue,1,data,0,data.length); 4IH0un
} ?et0W|^k
@p?b"?QaB
private static class MaxHeap{ ^Hy)<P
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void init(int[] data){ {g23[$X]N
this.queue=new int[data.length+1]; kM}ic(K
for(int i=0;i queue[++size]=data; `:B
fixUp(size); PAO[Og,-
} ^+Y-=2u:
} K%.YNVHHC
h<!khWFS
private int size=0; -hJ>wGI
JXD?a.vy^q
private int[] queue; UH.}B3H
._F6- pl
public int get() { C$]%1<-Iv]
return queue[1]; !Sr0Im0
} .P0Qs&i
_sCJ3ZJ
public void remove() { DftGy:Ah3
SortUtil.swap(queue,1,size--); (Mire%$h
fixDown(1); 8 MACbLY
} 0ga1Yr]
file://fixdown HK,G8:T
private void fixDown(int k) { !xx>
lX5
int j; W>
-E.#!_
while ((j = k << 1) <= size) { s5Bmv\e.i5
if (j < size %26amp;%26amp; queue[j] j++; JWm^RQ
if (queue[k]>queue[j]) file://不用交换 BafzQ'
break; r&l*.C*
SortUtil.swap(queue,j,k); (w@MlMk
k = j; &j~|3
} gPhw.e""
} fG[3%e
private void fixUp(int k) { R4rm>zisVX
while (k > 1) { )DZ-vnZ#t0
int j = k >> 1; =='{[[J
if (queue[j]>queue[k]) bQ\ -6dOtv
break; ?M{6U[?
SortUtil.swap(queue,j,k); O]r3?=
k = j; 0)] C&;}_M
}
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} qer'V
cTIwA:)D
} 6+f>XL#w
3K20f8g
} o:Os_NaD
m-KK
{{
SortUtil: i,b7Ft:F&
/KvPiQ%
package org.rut.util.algorithm; u$@I/q,ou
"drh+oo.
import org.rut.util.algorithm.support.BubbleSort;
8JOht(m
import org.rut.util.algorithm.support.HeapSort; +(P43XO08
import org.rut.util.algorithm.support.ImprovedMergeSort; zam0(^=
import org.rut.util.algorithm.support.ImprovedQuickSort; Zow^bzy4
import org.rut.util.algorithm.support.InsertSort; f;XsShxr
import org.rut.util.algorithm.support.MergeSort; Rc.<0#
import org.rut.util.algorithm.support.QuickSort; {hq ;7
import org.rut.util.algorithm.support.SelectionSort; ~JRuMP
import org.rut.util.algorithm.support.ShellSort; l|tp0[
IEr`6|X
/** e]B<