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。 2I:x)
插入排序: (4:&tm/;
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package org.rut.util.algorithm.support; Tfasry9'8
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import org.rut.util.algorithm.SortUtil; 4#<r}j12z
/** 3JhT
* @author treeroot f@JMDJ
* @since 2006-2-2 UqVcN$^b
* @version 1.0 GM]" $
*/ %Xe#'qNq)
public class InsertSort implements SortUtil.Sort{ 73/DOF
$H\[yg>4
/* (non-Javadoc) PSCzeR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6( #fGH&[
*/ RP!!6A6:
public void sort(int[] data) { #fB&Hv #s7
int temp; U(xN}Y?
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RLy2d'DS
} 0}LBnV
} q47>RWMh%
} =f48[=
9E`WZo^.
} LWH(bs9U
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冒泡排序: Myj5qh
5(9SIj^O
package org.rut.util.algorithm.support; 8{0=tOXx{
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import org.rut.util.algorithm.SortUtil; d6(R-k#B
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/** Bh`Y?S
* @author treeroot F_^)zss
* @since 2006-2-2 0`WjM2So
* @version 1.0 tO?NbW cp
*/ 6YErF|
public class BubbleSort implements SortUtil.Sort{ V_'!#
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/* (non-Javadoc) J \06j%d,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ X283 . ?
public void sort(int[] data) { &^q!,7.J
int temp; c:*[HO\
for(int i=0;i for(int j=data.length-1;j>i;j--){ [ADSGnw
if(data[j] SortUtil.swap(data,j,j-1); 9_=0:GHk
} aNt+;M7g`
} 4*`AYx(
} MWGs:tpL4
} Z--A:D>
d+caGpaR
} 9\dpJ\
R #f*QXv
选择排序: n'?AZ4&z
j\I{pW-
package org.rut.util.algorithm.support; mB\)Q J.%
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import org.rut.util.algorithm.SortUtil; dmR>u
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/** D,3Kx ^
* @author treeroot s0zN#'o]
* @since 2006-2-2 !g`^<y!
* @version 1.0 [TW?sW^0
*/ o[
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public class SelectionSort implements SortUtil.Sort { eq"
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@~=*W5
/* "_f~8f`y
* (non-Javadoc) 2uCw[iZM
* mRurGaR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k4C3SI*`4
*/ 3-=f@uH!
public void sort(int[] data) { &g;&=<#I
int temp; I>bO<T`
for (int i = 0; i < data.length; i++) { qsT@aSIo9
int lowIndex = i; /VmtQ{KTt+
for (int j = data.length - 1; j > i; j--) { ~|:U"w\[=
if (data[j] < data[lowIndex]) { ]\JLlQ}#H
lowIndex = j; `i2:@?Kl9
} +UM%6Z=+
} $q|-9B
SortUtil.swap(data,i,lowIndex); yv;KKQ
} mhNX05D
} 5V $H?MW>
mi';96
} LJ8 t@ui
gh?3 [q6
Shell排序: Nc da~h
Q
g7UZtpLTm
package org.rut.util.algorithm.support; k4E2OyCFoJ
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import org.rut.util.algorithm.SortUtil; ?~:4O}5Ax
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/** 1PN!1= F}
* @author treeroot 3|0wD:Dy
* @since 2006-2-2 ` ;}w!U
* @version 1.0 ^\f1zg9I
*/ hNRN`\5Z
public class ShellSort implements SortUtil.Sort{ mXPA1#qo
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/* (non-Javadoc) {aVRvZH4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ 6/3oW}Oo
public void sort(int[] data) { W]W[oTJ5
for(int i=data.length/2;i>2;i/=2){ A"}Ib'
for(int j=0;j insertSort(data,j,i); &} rmDx
} FX
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} c;B: o
insertSort(data,0,1); 9_b_O T
} !{+a2wi
9*2Q'z}_
/** <~Oy3#{
* @param data wVmQE
* @param j 6QYHPz
* @param i }Pm;xHnf&
*/ 8Q(A1U
private void insertSort(int[] data, int start, int inc) { :\]qB&
int temp; u_=^Bd
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _u9bZ'
} rU
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} 3^,p$D<T:,
} 0aqq*e'c
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} 0JXXJ:d B
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快速排序: @b9qBJfQ
7NMy1'-q
package org.rut.util.algorithm.support; }3/|;0j$
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import org.rut.util.algorithm.SortUtil; ILIv43QKM(
A
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/** vhGX&
* @author treeroot UZ;FrQ(l{
* @since 2006-2-2 =lmelo#m&
* @version 1.0 GD1L6kVd1
*/ %w;wQ_
public class QuickSort implements SortUtil.Sort{ j%)@f0Ng
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/* (non-Javadoc) jfU$qo!gi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 717OzrF}A?
*/ }1mkX\wWP
public void sort(int[] data) { .^wBv
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quickSort(data,0,data.length-1); = G>Y9Sc
} +,zV
[\
private void quickSort(int[] data,int i,int j){
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int pivotIndex=(i+j)/2; )
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file://swap HBm(l@#.
SortUtil.swap(data,pivotIndex,j); jG%J.u^k
()ww9L2
int k=partition(data,i-1,j,data[j]); T}jW,Ost
SortUtil.swap(data,k,j); MP
p
if((k-i)>1) quickSort(data,i,k-1); |)OC1=As
if((j-k)>1) quickSort(data,k+1,j); #!C|~=
5^Ny6t
} OyQ[}w3o|
/** s{:Thgv,9
* @param data |*g\-2j{
* @param i tN;^{O-(V
* @param j `0`#Uf_/$
* @return iSNbbu#
*/ 0E7h+]bh|
private int partition(int[] data, int l, int r,int pivot) { t9r
R>Y9
do{ r2\}_pIj
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z~ K} @
SortUtil.swap(data,l,r); EY@KWs3"H
} Q2'`K|T
while(l SortUtil.swap(data,l,r); /jSb^1\
return l; ~m4LL[
} *rVI[kL
63'L58O
} N}Or+:"O:q
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改进后的快速排序: nK`H;k
U45-R-
package org.rut.util.algorithm.support; P! P` MX
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import org.rut.util.algorithm.SortUtil; Y=@iD\u
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/** ir5eR}H
* @author treeroot l-2lb&n
* @since 2006-2-2
#!> `$
* @version 1.0 0x#
V
*/ s
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public class ImprovedQuickSort implements SortUtil.Sort { %reW/;)l{
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private static int MAX_STACK_SIZE=4096; L+Gi
private static int THRESHOLD=10; uT
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/* (non-Javadoc) A:\_ \B%<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e 8^%}\F
*/ .*?)L3n+t
public void sort(int[] data) { ]dT]25V
int[] stack=new int[MAX_STACK_SIZE]; (`<B#D;
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int top=-1; ?4t~z 1.f
int pivot; MfraTUxIo/
int pivotIndex,l,r; <bJ~Ol
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stack[++top]=0; GS*_m4.Ry6
stack[++top]=data.length-1; b/4gs62{k
N6v*X+4JH
while(top>0){ y2PxC. -
int j=stack[top--]; &zPM#Q
int i=stack[top--]; @h5 Q?I
+!t *LSF
pivotIndex=(i+j)/2; a?)g>e
HN
pivot=data[pivotIndex]; _k5$.f:Yj<
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SortUtil.swap(data,pivotIndex,j); .:/X~{
~]BR(n
file://partition )+.AgqxI
l=i-1; "WqM<kLa
r=j; qz 29f
do{ hDbZ62DDN
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]@qD4:
SortUtil.swap(data,l,r); |[!0ry*N%
} xRF_'|e
while(l SortUtil.swap(data,l,r); ?h8/\~Dw
SortUtil.swap(data,l,j); P.~sNd oJ
,88%eX|
if((l-i)>THRESHOLD){ fVq,?
stack[++top]=i; XX*f
stack[++top]=l-1; 0qBXL;sE
} x!onan
if((j-l)>THRESHOLD){ .>'J ^^
stack[++top]=l+1; %Ip=3($Ku[
stack[++top]=j; Q8DKU
} )EG-xo@X
xH-} <7
} 5;9.&f
file://new InsertSort().sort(data); )' 2vUt`_7
insertSort(data); 5hB2:$C
} =OR&,xt
/** ;e~K<vMm;y
* @param data o#IWH;ck.
*/ vw` '9~
private void insertSort(int[] data) { 3iiOxg?j
int temp; hflDVGBW
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +7K]5p;!~
} l_x>.' a
} h#8{fr)6
} s'@@q
]j(Ld\:L
} dRTpGz
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归并排序: j MA%`*r
_[
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package org.rut.util.algorithm.support; 98WJ"f_ #
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import org.rut.util.algorithm.SortUtil; ,-BZsZ0~
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/** A3 zNUad;
* @author treeroot /zV0kW>N
* @since 2006-2-2 *tT5Zt/&Sr
* @version 1.0 St1>J.k_
*/ c{f1_qXN
public class MergeSort implements SortUtil.Sort{ & l~=c2
Jaf=qwZ/`
/* (non-Javadoc) n]btazM{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J~G"D-l<9/
*/ k_Edug~B
public void sort(int[] data) { .LNqU#a
int[] temp=new int[data.length]; ;Y16I#?;Kh
mergeSort(data,temp,0,data.length-1); nzu
3BVv
} H
%PIE1_
Q_a%$a.rV
private void mergeSort(int[] data,int[] temp,int l,int r){ Y'%_--
int mid=(l+r)/2; ^F1zkIE
if(l==r) return ; mH3{<^Z6
mergeSort(data,temp,l,mid); >JhIRf
mergeSort(data,temp,mid+1,r); d>7bwG+k
for(int i=l;i<=r;i++){ g:c
@
temp=data; Th*mm3D6
} FkT% -I
int i1=l; jfrUOl'l
int i2=mid+1; 'w7{8^Z2
for(int cur=l;cur<=r;cur++){ {EupB?
if(i1==mid+1) 8|,-P=%t
data[cur]=temp[i2++]; G,i%:my7
else if(i2>r) gM3gc;
data[cur]=temp[i1++]; LvS3c9|Aj
else if(temp[i1] data[cur]=temp[i1++]; =;xlmndT,
else ;
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data[cur]=temp[i2++]; /7zy5
} %25_
} ) uyh
y/2U:H
} 'lNl><e-
7f
td2lv
改进后的归并排序: yQ8H-a.
k
.l,>s`!
package org.rut.util.algorithm.support; @.iOFY
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import org.rut.util.algorithm.SortUtil; 2jx+q
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/** Bf88f<Z
* @author treeroot y]\R0lR
* @since 2006-2-2 }Mo9r4}
* @version 1.0 9Au+mIN
*/ i]LK,'
public class ImprovedMergeSort implements SortUtil.Sort { \9k{"4jX\
Xl*-A|:j
private static final int THRESHOLD = 10; |qNrj~n@
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/* Sb[rSczS~
* (non-Javadoc) @;,O V&XYn
* jIc;jjAF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zFuUv_t
*/ [%nG_np
public void sort(int[] data) { 0QIocha
int[] temp=new int[data.length]; l7J_s?!j
mergeSort(data,temp,0,data.length-1); c)E[K-u
} v981nJ>w,
Da-(D<[0
private void mergeSort(int[] data, int[] temp, int l, int r) { p r0V) C6
int i, j, k; 6l
vx
int mid = (l + r) / 2; c)6Y.[).
if (l == r) lE|T'?/
return; X0Oq lAw
if ((mid - l) >= THRESHOLD) )Y&De)=
mergeSort(data, temp, l, mid); EJtU(HmW
else Z#MODf0H@
insertSort(data, l, mid - l + 1); YJ16vb9
if ((r - mid) > THRESHOLD) ^]R0d3?>\
mergeSort(data, temp, mid + 1, r); Eq<#pX6
else V!U[N.&$
insertSort(data, mid + 1, r - mid); lIFU7g
A^p $~e\)
for (i = l; i <= mid; i++) { wD,F=O
temp = data; WNYLQ=;
} }C&c=3V
for (j = 1; j <= r - mid; j++) { 8rpN2M3h
temp[r - j + 1] = data[j + mid]; l*m|b""].u
} ToJru
int a = temp[l]; 49zp@a
int b = temp[r]; }\*Sf[EMD
for (i = l, j = r, k = l; k <= r; k++) { dw4)4_
if (a < b) { +tN-X'u##
data[k] = temp[i++]; uATBt
a = temp; gq@."wHU
} else { N8{>M,
data[k] = temp[j--]; \4p<;$'
b = temp[j]; G\NCEE'A
} +Ae.>%}
} >SGSn/AJi
} er#=xqUY
X0$_KPn
/** Go67VqJr
* @param data TnaIRJ\B
* @param l 5#F+-9r
* @param i `cv:p|s
*/ 5UM[Iz
private void insertSort(int[] data, int start, int len) { 5,((JxX$
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); H= y-Y_R
} Le'\x`B
} j&mL]'Zy
} |5/[0V-vy
} n{yjH*\Z
*sG<w%%
堆排序: -/qrEKQ0U?
FTenXJ/c
package org.rut.util.algorithm.support; dCK-"#T!
k1H0hDE
import org.rut.util.algorithm.SortUtil; ZF/KV\Ag)
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/** I(CI')Q
* @author treeroot ~GeYB6F
* @since 2006-2-2 ^>p [b
* @version 1.0 ]x G4T>S
*/ YBO53S]=
public class HeapSort implements SortUtil.Sort{ ]O\W<'+V
4dK@UN\
/* (non-Javadoc) K]oPh:E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ttj5%~
*/ 'x0t,
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public void sort(int[] data) { !!86Sv
MaxHeap h=new MaxHeap(); I{PN6bn{>
h.init(data); W<L6,
for(int i=0;i h.remove(); WI,=?~-
System.arraycopy(h.queue,1,data,0,data.length); 80EY7#r@w
} l!=WqIZ
;R!H\
private static class MaxHeap{ `IoX'|C[h
zef,*dQY
void init(int[] data){ &B4U)
this.queue=new int[data.length+1]; w3Ohm7N[
for(int i=0;i queue[++size]=data; I@ k8^
fixUp(size); Jq#Cn+zW
} l}2WW1b(
} a=FRJQ8S
@^%_ir(
private int size=0; v^pP&
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kI'A`
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private int[] queue; `[\phv
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public int get() { [VW;L l
return queue[1]; k
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} ;"
*`
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public void remove() { QO.gt*"
SortUtil.swap(queue,1,size--); ODEXQl}R
fixDown(1); wjJ1Psnx
} '5U$`Xe1
file://fixdown 2&fwr>!$
private void fixDown(int k) { !y`e,(E
int j; C#&6p0U
while ((j = k << 1) <= size) { YMTA`T(+
if (j < size %26amp;%26amp; queue[j] j++; ^^SfIK?p
if (queue[k]>queue[j]) file://不用交换 7nz+n#
break; B,833Azi
SortUtil.swap(queue,j,k); Zg&\K~OC
k = j; d6EY'*0
} Dj+Osh
} &>l8S lC?
private void fixUp(int k) { ef;L|b%pp
while (k > 1) { N{t:%[
int j = k >> 1; i_Z5SMZ
if (queue[j]>queue[k]) Xh"iP %
break; n;-r
W;ZO
SortUtil.swap(queue,j,k); _%vqBr*
k = j; +[/r^C
} NCFV
} >}{-!
Td1ba ^J
} *v ^"4
Sp,Q,Q4
} %i>e
1cBhcYv"
SortUtil: EE6|9K>
bTGK@~
package org.rut.util.algorithm; FraW6T}_
d$rUxqB.
import org.rut.util.algorithm.support.BubbleSort; o}+Uy
import org.rut.util.algorithm.support.HeapSort; 78CJ
import org.rut.util.algorithm.support.ImprovedMergeSort; }~r6>7I
import org.rut.util.algorithm.support.ImprovedQuickSort; X,+}syK
import org.rut.util.algorithm.support.InsertSort; 6QXQ<ah"
import org.rut.util.algorithm.support.MergeSort; 6.s?
import org.rut.util.algorithm.support.QuickSort; wrYQ=u#Z
import org.rut.util.algorithm.support.SelectionSort; -QPWi2:k
import org.rut.util.algorithm.support.ShellSort; u7&'3 ef
5MY}(w
/** cC^C7AAq^
* @author treeroot ;kW}'&Ug
* @since 2006-2-2 F ssEs!#
* @version 1.0 #pQ"+X
*/ Df~p'N-$
public class SortUtil { (Q8?)
public final static int INSERT = 1; |p -R9A*>h
public final static int BUBBLE = 2; 36x:(-GFq
public final static int SELECTION = 3; !5%5]9'n@*
public final static int SHELL = 4; asN
}
public final static int QUICK = 5; $>ZP%~O
public final static int IMPROVED_QUICK = 6; s.^9HuM
public final static int MERGE = 7; Y\e]2
public final static int IMPROVED_MERGE = 8; ,/`E|eG1G
public final static int HEAP = 9; C!{AnWf
NS4'IR=;E!
public static void sort(int[] data) { r`R~{;oT
sort(data, IMPROVED_QUICK); 2HGD{;6>v{
} p;=kH{uu
private static String[] name={ ),Ho( %T\
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )_^WpyzF1
}; ^I<T+X+<
rgdQR^!l6
private static Sort[] impl=new Sort[]{ Eu/y">;v#
new InsertSort(), 72ViPWW
new BubbleSort(), Kq 4<l
new SelectionSort(), n_aNs]C9R
new ShellSort(), D5!K<G?-K
new QuickSort(), %7>AcTN~
new ImprovedQuickSort(), 3V
Mh)
new MergeSort(), CQjZAv
new ImprovedMergeSort(), 4m~7 ~- h
new HeapSort() Sci4EGc
}; bV$8
>[`
3$N %iE6
public static String toString(int algorithm){ ^jha:d
return name[algorithm-1]; 9c^skNbS
} .z$Sm
3P#+)
F~
public static void sort(int[] data, int algorithm) { 5`"*y iv
impl[algorithm-1].sort(data); $FQcDo|[
} 7<1fKrN?GF
AX!>l;
public static interface Sort { ,t%CK!8
public void sort(int[] data); Q6.*"`
} }or2 $\>m
L+L"$
public static void swap(int[] data, int i, int j) { `Ixs7{&jU
int temp = data; jemxky
data = data[j]; 6I&j
cHH
data[j] = temp; aXIB ) $1
} o'^;tLs15
} WHgV_o 8