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。 {91Y;p
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插入排序: I\1E=6"
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package org.rut.util.algorithm.support; U>!TM##1QD
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import org.rut.util.algorithm.SortUtil; aoW2 c1`?Z
/** 3"Oipt+
* @author treeroot :K~@JlJd
* @since 2006-2-2 R-pON4D"*
* @version 1.0 XO?WxL9k]
*/ L>/$l(
public class InsertSort implements SortUtil.Sort{ SPb`Q"
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/* (non-Javadoc) pSQ2wjps
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5u9 lKno
*/ c(Y~5A{TXO
public void sort(int[] data) { m
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int temp; :1f,%Z$,q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4IZAJqw(*
} E^n!h06~G
} @dK_w'W
} ]v:,<=S
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冒泡排序: lv]U)p
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package org.rut.util.algorithm.support; uYs45 G
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import org.rut.util.algorithm.SortUtil; ,~$sJ2
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/** oAN,_1v)
* @author treeroot ~-sgk"$
* @since 2006-2-2 ozS'n]8*
* @version 1.0 `>KNa"b%$
*/ &'e+`\
public class BubbleSort implements SortUtil.Sort{ T)22P<M8
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/* (non-Javadoc) uh9b!8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;LC|1_ '
*/ ?-&k?I
public void sort(int[] data) { ?7CdJgJp
int temp; Ye|gW=FUR
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0?FJ~pu
if(data[j] SortUtil.swap(data,j,j-1); u7J:ipyiq2
} 8}[<3K%*g
} &VU^d3gv~
} BuM#&]s
} 0*P-/)o x
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} ,^
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选择排序: pT+OPOSR
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package org.rut.util.algorithm.support; e 0$m<5
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import org.rut.util.algorithm.SortUtil; H]V(qq{
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/** [Ti' X#
* @author treeroot _{if"
* @since 2006-2-2 (F;*@Z*R
* @version 1.0 1F0];{a
*/ K7x;/O
public class SelectionSort implements SortUtil.Sort { wk'(g_DP
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/* A Ef@o+A
* (non-Javadoc) ]_s;olKNI
* WM$Z?CN%KB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'YN:cr,V
*/ n~>b}DY
public void sort(int[] data) { -H\j-k
int temp; xV`)?hEXFh
for (int i = 0; i < data.length; i++) { hms Aim9i
int lowIndex = i; "{S4YA
for (int j = data.length - 1; j > i; j--) { *.$ov<E.
if (data[j] < data[lowIndex]) { &j'k9C2p
lowIndex = j; \l[AD-CZPh
} N-}OmcO]e
} XkW@"pf&Fh
SortUtil.swap(data,i,lowIndex); @/01MBs;
} 8PeVHpZ
} g-x;a0MQx
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} kotKKs
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Shell排序: S:2 xm8
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package org.rut.util.algorithm.support; lzFg(Ds!f
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import org.rut.util.algorithm.SortUtil; 2,|@a\H
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/** GXv2B%i8
* @author treeroot [m
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* @since 2006-2-2 - 3<&sTR
* @version 1.0 ][OkydE
*/ +K=RM qM-8
public class ShellSort implements SortUtil.Sort{ jt @2S
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/* (non-Javadoc) ^^xzaF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oe9S$C;$'
*/ URh5ajoR%
public void sort(int[] data) { )i-`AJK-'v
for(int i=data.length/2;i>2;i/=2){ YSZ[~?+
for(int j=0;j insertSort(data,j,i); )5<dmK@
} Vz5<Gr
} +tlbO?
insertSort(data,0,1); nu|?F\o!
} *:l$ud
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/** =/xXB
* @param data f|!@H><
* @param j {qry2ZT5
* @param i Jju?v2y`
*/ 5(\[Gke
private void insertSort(int[] data, int start, int inc) { l29AC}^
int temp; ]?jmRk^.
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Oh}@c~7;
} K^I$05idi
} )gR3S%Ju
} {5fq4AA6
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} 127@
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快速排序: ;ZrFy=Iv
+hT9V1'-D
package org.rut.util.algorithm.support; 6~k qU4lL
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import org.rut.util.algorithm.SortUtil; R?*-ZI[>w
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/** =4x-x nA
* @author treeroot ZQJh5.B
* @since 2006-2-2 j!"N Eh78H
* @version 1.0 RQn3y-N]
*/ dp1t]
public class QuickSort implements SortUtil.Sort{ J=DD/Gp
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/* (non-Javadoc) JAL"On#c#0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JDMsco+j5
*/ IZ_ B $mo
public void sort(int[] data) { Y9(BxDP_+Y
quickSort(data,0,data.length-1); A5dH*< }
} _lk5\bu
private void quickSort(int[] data,int i,int j){ SR\$ fmo
int pivotIndex=(i+j)/2; a@gm r%C
file://swap L\kT9wWK|
SortUtil.swap(data,pivotIndex,j); w?p8)Q6m
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int k=partition(data,i-1,j,data[j]); CwfGp[|}e
SortUtil.swap(data,k,j); ![_GA)7
if((k-i)>1) quickSort(data,i,k-1); t== a(e
if((j-k)>1) quickSort(data,k+1,j); RQ51xTOL4]
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} 5z:/d `P[
/** &sPu3.p
* @param data Hkj|
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* @param i O`(it%Ho!
* @param j Jbz>j\
* @return $Jj0%?;
*/ $2*&\/;-E!
private int partition(int[] data, int l, int r,int pivot) { SB!m&;Tb
do{ 'P)[=+O?t
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); CQ%yki
SortUtil.swap(data,l,r); >qIZ
} C;!h4l7L
while(l SortUtil.swap(data,l,r); P~*v}A
return l; c\eT`.ENk
} u]Y NF[]
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} /K#J63 ,
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改进后的快速排序: C}mWX7<Z.
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package org.rut.util.algorithm.support; _:;j)J0
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import org.rut.util.algorithm.SortUtil; 1HNX6
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/** 9]/ju
* @author treeroot W.U|mNJ$
* @since 2006-2-2 r;aP`MVO<
* @version 1.0 &@xeWB
*/ vui{["
public class ImprovedQuickSort implements SortUtil.Sort { Sst`*PX:
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private static int MAX_STACK_SIZE=4096; Tn3f5ka'
private static int THRESHOLD=10; d
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/* (non-Javadoc) j~Xn\~*n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4&LoE~
*/ TMQu'<?V
public void sort(int[] data) { O/R>&8R$
int[] stack=new int[MAX_STACK_SIZE]; y0XI?Wr
} "ts
int top=-1; 1&}^{ Ys
int pivot; V5ihplAk
int pivotIndex,l,r; OKq={l
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stack[++top]=0; gb0ZGnI
stack[++top]=data.length-1; OECXNx
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while(top>0){ x5Ee'G(
int j=stack[top--]; D+
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int i=stack[top--]; M+TF0c
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pivotIndex=(i+j)/2; >taZw'
pivot=data[pivotIndex]; &9'JHF!l
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SortUtil.swap(data,pivotIndex,j); +nslS:(
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file://partition RsDI7v
l=i-1; #8d$%F))
r=j; Qmh*Gh?v
do{ wbId}!
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Cx/duodp
SortUtil.swap(data,l,r); ^5~[G%G4
} cBA2;5E
while(l SortUtil.swap(data,l,r); $T0|zPK5
SortUtil.swap(data,l,j); $rC`)"t
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if((l-i)>THRESHOLD){ 2={ g'k(
stack[++top]=i; d|sI>6jD
stack[++top]=l-1; fJC,ubP[5
} 3,B[%!3d
if((j-l)>THRESHOLD){ I1H:h
stack[++top]=l+1; #B)`dA0a
stack[++top]=j; tgYIM`f
} :PaFC{O)*
O_PC/=m1@
} $mOK|=tI_
file://new InsertSort().sort(data); g%<7Px[W
insertSort(data); {:enoV"
} ~+$l9~`{
/** 6dmTv9e
* @param data Z@8amT;Y
*/ c~|/,FZU'
private void insertSort(int[] data) { hK$-R1O
int temp; y6?Q5x9M
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `"CF/X^
} uS|Zkuk[!
} u;:N 4d=f'
} uyG4zV\h*
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} e"|9%AW@<
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归并排序: &/, BFx"
3)g1e=\i$
package org.rut.util.algorithm.support; X6<HNLgra
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import org.rut.util.algorithm.SortUtil; [*>@hx
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/** ^j=_=Km]
* @author treeroot }wkBa]
* @since 2006-2-2 knBT(x'+
* @version 1.0 6<t\KMd
*/ M=N`&m