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。 (z 9M
插入排序: ],s{%a5wC
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package org.rut.util.algorithm.support; t-Uo
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import org.rut.util.algorithm.SortUtil; TyY%<NCIb
/** BlfadM;
* @author treeroot XNJ3.w:R
* @since 2006-2-2 Zygu/M6
* @version 1.0 6uIgyO*;k
*/ +E-CsNAZ*"
public class InsertSort implements SortUtil.Sort{ EhAaaG
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/* (non-Javadoc) c8LMvL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vw]!Kb7tA
*/ n?*r, )'
public void sort(int[] data) { d9up!
k
int temp; >R}G
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U^8S@#1Q
} dngG=
} ZI.Czzx\=
}
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} Y_)xytJ$
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冒泡排序: q_cP<2`@V
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package org.rut.util.algorithm.support; 0f#xyS 3
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import org.rut.util.algorithm.SortUtil; @FZbp
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/** ohjl*dw
* @author treeroot 2Z>8ROv^X
* @since 2006-2-2 uS5G(} [
* @version 1.0 25 cJA4
*/ 0n}v"61q
public class BubbleSort implements SortUtil.Sort{ -Fq`#"
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nyetK
*/ .N7<bt@~)
public void sort(int[] data) { [&g"Z"
int temp; ,0c]/Sd*p
for(int i=0;i for(int j=data.length-1;j>i;j--){ WLA&K]
if(data[j] SortUtil.swap(data,j,j-1); q@g#DP+C
} fN/;BT
} (&Rql7](8
} SlG^ H
} j
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} 1'N<ITb
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选择排序: !_FTy^@c2
cyo[HI?WM
package org.rut.util.algorithm.support; zz!jt
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import org.rut.util.algorithm.SortUtil; `~z[Hj=2
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/** (%OZ `?`
* @author treeroot et"Pb_-U
* @since 2006-2-2 bB>.dC
* @version 1.0 yj=OR|v
*/ \d*ts(/a*
public class SelectionSort implements SortUtil.Sort { mx#%oJnsi
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/* 9c%CCZ
* (non-Javadoc) Wm}gnNwA
* \E[6wB>uN%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pKno~jja
*/ Np i)R)
public void sort(int[] data) { =?Ui(?tI
int temp; ,,!P-kK$
for (int i = 0; i < data.length; i++) { |]9L#
int lowIndex = i; F-$!e?,H
for (int j = data.length - 1; j > i; j--) { s/.P/g%tA>
if (data[j] < data[lowIndex]) { wqi0%Cu*
lowIndex = j; cg o
} &>B"/z
} :%Oz:YxC/
SortUtil.swap(data,i,lowIndex); e"_kH_7sv
} 8t. QFze?
} Bgn%d4W;G
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} ^Ua6.RH8
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Shell排序: PfyJJAQ[
jijwHL
package org.rut.util.algorithm.support; YWs?2I
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import org.rut.util.algorithm.SortUtil; ]-9w'K d
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/** Xhq6l3 M
* @author treeroot M9""(`U
* @since 2006-2-2 ;b:'i&r
* @version 1.0 5\=
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*/ H\qZu%F'
public class ShellSort implements SortUtil.Sort{ p_(En4QSH
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/* (non-Javadoc) -7]j[{?w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )$1>6C\
*/ T2/:C7zL
public void sort(int[] data) { a+cDH
for(int i=data.length/2;i>2;i/=2){ lx=tOfj8
for(int j=0;j insertSort(data,j,i); ]%y>l j?Y
} *c [^/
} J8i,[,KcE
insertSort(data,0,1); !\[JWN@v
} d,?Tq
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/** :vX%0|
* @param data #\`kg#&
* @param j ZX64kk+
* @param i fIl!{pv[
*/ s'oNW
private void insertSort(int[] data, int start, int inc) { ^!d0abA
int temp; S1I.l">P
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k=[s%O6H
} TYb$+uY
} `CH,QT7e
} bc4 V&
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} o{! :N> (
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快速排序: \Dy|}LE
A+gS'DZ9C
package org.rut.util.algorithm.support; )Z:D}r8[
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import org.rut.util.algorithm.SortUtil; E_aBDiyDf
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/** gK9d `5
* @author treeroot !{(Bc8
hT
* @since 2006-2-2 ?h&?`WO(
* @version 1.0 Hcwfe=K&/
*/ ^a_a%ws
public class QuickSort implements SortUtil.Sort{ pm ,xGo2
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/* (non-Javadoc) %^HE^ &
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fO&`A:JY
*/ y:}qoT_.
public void sort(int[] data) { TKv!wKI
quickSort(data,0,data.length-1); uBa<5YDF
} N{S) b
private void quickSort(int[] data,int i,int j){ p/?o^_s
int pivotIndex=(i+j)/2; 3_Xu3hNH!
file://swap >>,G3/Zd*
SortUtil.swap(data,pivotIndex,j); d_M+W@{
w\YS5!P,V
int k=partition(data,i-1,j,data[j]); ,d,2Q
SortUtil.swap(data,k,j); 8ZVQM7O
if((k-i)>1) quickSort(data,i,k-1); Bskp&NV':
if((j-k)>1) quickSort(data,k+1,j); .WqqP
Lr D@QBT
} j}eb
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/** ro\oL
* @param data L;%w{,Ji
* @param i @)uV Fw"\
* @param j e5>'H!)
* @return V7Cnu:0_
*/ xlS*9>Ij
private int partition(int[] data, int l, int r,int pivot) { f4b9o[,s2e
do{ P .m@|w&.K
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .Mb[j1L^
SortUtil.swap(data,l,r); LWT\1#
} L|T?,^
while(l SortUtil.swap(data,l,r); _E`+0;O
return l; <3x%-m+p4
} Ze eV-
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} c\1X NPGG
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改进后的快速排序: n jWe^
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package org.rut.util.algorithm.support; WC`h+SC`.
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import org.rut.util.algorithm.SortUtil; )x7n-|y6
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/** \X:e9~
* @author treeroot GDL/5m#
* @since 2006-2-2 () _RLA
* @version 1.0 B/1j4/MS
*/ Oh*~+/u}q
public class ImprovedQuickSort implements SortUtil.Sort { eZa*WI=
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private static int MAX_STACK_SIZE=4096; SQ_?4 s::
private static int THRESHOLD=10; 8m?(* [[
/* (non-Javadoc) B#Ybdp ;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \D? '.Wo%
*/ lD0-S0i
public void sort(int[] data) { k.ou$mIY
int[] stack=new int[MAX_STACK_SIZE]; X3l>GeUi
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int top=-1; II=`=H{
int pivot; I?3b}#&V9
int pivotIndex,l,r; KFd
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stack[++top]=0; v'@gUgC
stack[++top]=data.length-1; _xaum
]- 1(r,
while(top>0){ Xb%q9Z
int j=stack[top--]; +Y sGH~jX
int i=stack[top--]; #&}-
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pivotIndex=(i+j)/2; {5E8eQ
pivot=data[pivotIndex]; bE
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})/P[^
SortUtil.swap(data,pivotIndex,j); Yub}AuU`v
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file://partition JY#vq'dl|
l=i-1; yS
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r=j; ZL6HD n!
do{ 3\XNOJH
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cmG27\c RO
SortUtil.swap(data,l,r); ;{sZDjev>
} )/$J$'mcxd
while(l SortUtil.swap(data,l,r); NZvgkci_(u
SortUtil.swap(data,l,j); ?% 24M\
.*-8rOcc
if((l-i)>THRESHOLD){ ! Ld5Y$
stack[++top]=i; u /F!8#
stack[++top]=l-1; u?Ffqt9'
} ?s^qWA
if((j-l)>THRESHOLD){ #Q8_:dPY
stack[++top]=l+1; f1 x&Fk
stack[++top]=j; %R c#/y
} JY,$B-l
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} Ek)drt7cy
file://new InsertSort().sort(data); \G gh 95y
insertSort(data); OTXZdAv
} 5~[7|Y
/** _nMd
* @param data 9Y:I)^ek
*/ 3x+lf4"
private void insertSort(int[] data) { 0Qt!w(
int temp; E )_n?>Ar
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bw P=f.
} ,>a!CnK=
} j&d5tgLB
} , _e[P
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} P8z%*/
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归并排序: 8_('[89m
O
k`}\NZL
package org.rut.util.algorithm.support; yJ $6vmQ
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import org.rut.util.algorithm.SortUtil; `}Zqmfs
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/** lx:$EJ
* @author treeroot *:n~j9V-
* @since 2006-2-2 <L-F3Buu
* @version 1.0 x6UXd~
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*/ Z}+}X|
public class MergeSort implements SortUtil.Sort{ z\]Z/Bz:6
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/* (non-Javadoc) r].n=455[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~7PD/dre
*/ :V'99Esv`
public void sort(int[] data) { "v1{
int[] temp=new int[data.length]; Ek{Q NlQ]4
mergeSort(data,temp,0,data.length-1); 0caZ_-zU
} #r'MfTr
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private void mergeSort(int[] data,int[] temp,int l,int r){ uHg q"e
int mid=(l+r)/2; LiG$M{ 0
if(l==r) return ; &i5@4,p y9
mergeSort(data,temp,l,mid); |.N[NY
mergeSort(data,temp,mid+1,r); d_!Z /M,
for(int i=l;i<=r;i++){ }>@\I^Xm,
temp=data; !Km[Qw
k-
} ?})A-$f ~
int i1=l; i>Q!5
int i2=mid+1; !D??Y^6bI
for(int cur=l;cur<=r;cur++){ Nz
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if(i1==mid+1) >rd#,r
data[cur]=temp[i2++]; O4R\]B#Xu
else if(i2>r) /hl'T'RG
data[cur]=temp[i1++]; |7|S>h^
else if(temp[i1] data[cur]=temp[i1++]; Hl$W+e|tj
else TjUwe@&Rw
data[cur]=temp[i2++]; .?:*0
} lFzVd
N
} =1IK"BA2?
B>53+GyMV
} ok:uTeJI
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改进后的归并排序: 2aYBcPFQh#
Scrj%h%[
package org.rut.util.algorithm.support; xo[o^go
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import org.rut.util.algorithm.SortUtil; mLhM_=
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/** p'R<yB)V
* @author treeroot P 45Irir
* @since 2006-2-2 |+nmOi,z
* @version 1.0 N"70P/
*/ F3|^b{'zO
public class ImprovedMergeSort implements SortUtil.Sort { 4aXIRu%#7
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private static final int THRESHOLD = 10; 8
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/*
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* (non-Javadoc) =QqH`.3
* &A0OYV3i.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z<%P"
*/ Nr4}x7
public void sort(int[] data) { #V>R#Oh}
int[] temp=new int[data.length]; Aw#<: 6-
mergeSort(data,temp,0,data.length-1); _uIS[%4g
} RAW;ze*"
g|~px$<iY
private void mergeSort(int[] data, int[] temp, int l, int r) { X-["{
int i, j, k; J"r?F0
int mid = (l + r) / 2; (D>_O$o
if (l == r) V^_A{\GK
return; ]+D@E2E
if ((mid - l) >= THRESHOLD) cH5i420;aO
mergeSort(data, temp, l, mid); f[o~d`z
else ',EI[
]+
insertSort(data, l, mid - l + 1); %Ig$: I(o
if ((r - mid) > THRESHOLD) ]oGd,v X
mergeSort(data, temp, mid + 1, r); <`nShP>vl
else :j&enP5R(q
insertSort(data, mid + 1, r - mid); @v)Z>xv
Gx C+lqH#
for (i = l; i <= mid; i++) { [^hW>O=@TN
temp = data; xM jn=\}
} @|
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for (j = 1; j <= r - mid; j++) { ~c)&9'
temp[r - j + 1] = data[j + mid]; 26j<>>2
} M$K%e
int a = temp[l]; (`.# n3{
int b = temp[r]; pD{OB
for (i = l, j = r, k = l; k <= r; k++) { Q#g`D,:o%~
if (a < b) { 8V:;HY#
data[k] = temp[i++]; <C`bf$ak
a = temp; J M`w6}
} else { xi (@\A
data[k] = temp[j--]; -xtT,^<B
b = temp[j]; Df6i*Ko|
} # h;
} k|;a"56F
} JxVGzb`8
Vl_6nY;
/** gFaZ ._
* @param data D$ds[if$U,
* @param l Hv;xaT<}V
* @param i o}AXp@cqi
*/ !ku}vTe
private void insertSort(int[] data, int start, int len) { 'kd}vq#|
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 63fYX"
} ;<+efYmyc
} zx#Gm=H4
} {5 dVK
} m\>gOTpA4
07 LyB\l~
堆排序: ~5HkDtI)
Olzw)WjG
package org.rut.util.algorithm.support; E+L7[
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import org.rut.util.algorithm.SortUtil; 2
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/** {hS!IOM
* @author treeroot Rpn<"LIoB:
* @since 2006-2-2 I}8e"#
* @version 1.0 ASXGM0t
*/ LHY7_"u#
public class HeapSort implements SortUtil.Sort{ $?GggP d
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/* (non-Javadoc) h#0n2o #
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d.&_j`\F
*/ T<]{:\*n
public void sort(int[] data) { lNe4e6
MaxHeap h=new MaxHeap(); |
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h.init(data); UQ0!tFx
for(int i=0;i h.remove(); !Rv ;~f/2
System.arraycopy(h.queue,1,data,0,data.length); 5IU!BQU
} //@6w;P
";/]rwHa)
private static class MaxHeap{ Ct=bZW"j/
VEWW[T
void init(int[] data){ * F!B4go
this.queue=new int[data.length+1]; mE~WE+lw9
for(int i=0;i queue[++size]=data; MIJuJ]U}
fixUp(size); .tRm1&Qi
} /?81Ypt
} ;.h /D4
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private int size=0; n.+*_c8 k
@<W` w
private int[] queue; Iy)1(upM
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public int get() { P-X|qVNK1Z
return queue[1]; I9kz)Q o
} {a[BhK'g
*R6lK&
public void remove() { I_1?J*
b4k
SortUtil.swap(queue,1,size--); Y}[<KK}_
fixDown(1); hb3n-
rO
} k+_>`Gre}
file://fixdown O*N:A[eW
private void fixDown(int k) { ? 2}%Rb39
int j; u7e$Mq
while ((j = k << 1) <= size) { VxY]0&sq
if (j < size %26amp;%26amp; queue[j] j++; 3,p!Fun:r
if (queue[k]>queue[j]) file://不用交换 Z
`F[0-
break; 19fa7E<
SortUtil.swap(queue,j,k); EZ!! V~
k = j; =1[_#Moc6
} Zfs-M)
} 8~U
^G[!
private void fixUp(int k) { ?0~g1"Y-*K
while (k > 1) { ykQb;ZP8jh
int j = k >> 1; `}Y)l:G*g
if (queue[j]>queue[k]) AE~zmtW
break; )WvKRp r
SortUtil.swap(queue,j,k); }8#olZ/(q
k = j; *(x.egORd
} Oti;wf G7o
} WB:0}b0Gu
jr6 0;oK+
} ]t<=a6<P
&A
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} 0Y oKSo
hk
!=ZE3
SortUtil: Yo %U{/e
mAlG}<
package org.rut.util.algorithm; fTEZ@#p
yl$Ko
import org.rut.util.algorithm.support.BubbleSort; 1ZFKLI`V
import org.rut.util.algorithm.support.HeapSort; !w7/G
import org.rut.util.algorithm.support.ImprovedMergeSort; r(^00hvH
import org.rut.util.algorithm.support.ImprovedQuickSort; |?KYY0
import org.rut.util.algorithm.support.InsertSort; D:k< , {
import org.rut.util.algorithm.support.MergeSort; K qJE?caw
import org.rut.util.algorithm.support.QuickSort; kw59`z Es
import org.rut.util.algorithm.support.SelectionSort; ,X/j6\VBO
import org.rut.util.algorithm.support.ShellSort; -#I]/7^
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/** Pz50etJ
* @author treeroot LB@<Q.b,U
* @since 2006-2-2 N+.Nu= +i2
* @version 1.0 feXo"J
*/ -O &>HA
public class SortUtil { ]fb@>1
jp
public final static int INSERT = 1; ?EUg B\
public final static int BUBBLE = 2; La6
9or
public final static int SELECTION = 3; r QzdHA
public final static int SHELL = 4; !v2/sq$G
public final static int QUICK = 5; aH;AGbp
public final static int IMPROVED_QUICK = 6; e\~nqKCb
public final static int MERGE = 7; huqtk4u
public final static int IMPROVED_MERGE = 8; A^}#
public final static int HEAP = 9; ql9n`?Q
~Jf(M^E
public static void sort(int[] data) { /BgXY}JC.
sort(data, IMPROVED_QUICK); 6EC',=)6R
} n]6'!Eo
private static String[] name={ OK4r)
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,LZA\XC
}; v
RD/67
38sLyoG=i
private static Sort[] impl=new Sort[]{ @Yt394gA%\
new InsertSort(), I{w(`[Nxw*
new BubbleSort(), bR3Crz(9G
new SelectionSort(), i).Vu}W#S
new ShellSort(), x((u
new QuickSort(), Wm1dFf.>
new ImprovedQuickSort(), l|+$4 Nb2
new MergeSort(), O+&;,R:
new ImprovedMergeSort(), f5//?ek
new HeapSort() 6}Y==GPt
}; 7a>+ma\
:PV3J0pB~
public static String toString(int algorithm){ ~> )>hy)
return name[algorithm-1]; V|A)f@ Fs
} a6zWg7 PN
RQ0^
1
R
public static void sort(int[] data, int algorithm) { A*BN
impl[algorithm-1].sort(data); b81^756
} `[$>S
!{,2uQXe
public static interface Sort { >Ec;6V
e
public void sort(int[] data); ?9xWTVa8
} 0(o2<d7
J#:`'eEG
public static void swap(int[] data, int i, int j) { V9/2y9u
int temp = data; ,#N}Ni:
data = data[j]; ~NE`Ad.G
data[j] = temp; 6
JI8l`S
} @ddCVxd
} @D[+@N