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。 BVxg=7%St
插入排序: p_Fc:%j>
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package org.rut.util.algorithm.support; KyW6[WA9
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import org.rut.util.algorithm.SortUtil; vV1F|
/** p5^,3&
* @author treeroot h&J6
* @since 2006-2-2 n6;jIf|
* @version 1.0 i TY4X:x
*/ SF 61rm
public class InsertSort implements SortUtil.Sort{ .ag4i;hS8
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/* (non-Javadoc) ;HM&
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IC+Z C
*/ l?~SH[V
public void sort(int[] data) { D;)Tm|XizW
int temp; ^~(vP:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K1Nhz'^=D
} .]%PnJM9K
} qIK"@i[
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冒泡排序: S pDVD
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package org.rut.util.algorithm.support; Z{`;Ys:zk
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import org.rut.util.algorithm.SortUtil; 9g+/^j^>?f
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/** _n_lO8mK
* @author treeroot 7f#[+i
* @since 2006-2-2 0\%/:2
* @version 1.0 A] pLq`
*/ Q,Vv
public class BubbleSort implements SortUtil.Sort{ d<.
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/* (non-Javadoc) st(l85
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +vaz gO<u
*/ Ol:&cX3G
public void sort(int[] data) { KDgJ~T
int temp; F{ J>=TC
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ae:(_UJz
if(data[j] SortUtil.swap(data,j,j-1); B;[{7J]
} ?ltTJ(Po
} OwV>`BIwns
} ex7zg!
} l]inG^s
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} JPS22i)P
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选择排序: tYiK#N7
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package org.rut.util.algorithm.support; R6]/g
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import org.rut.util.algorithm.SortUtil; d7qY(!&
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/** xn1
* @author treeroot G!k&'{2
* @since 2006-2-2 vGO- a2Z
* @version 1.0 Y8`4K* 58%
*/ B:)9hF?o@
public class SelectionSort implements SortUtil.Sort { fLL_{o0T
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/* :j9{n ,F
* (non-Javadoc) |Y"q. n77
* 5b3Wt7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <~t38|Ff@
*/ H1rge<
public void sort(int[] data) { z$oA6qB)
int temp; z:bxnM2\
for (int i = 0; i < data.length; i++) { (%"M% Qko
int lowIndex = i; 4.7OX&L'G
for (int j = data.length - 1; j > i; j--) { f:\jPkf'
if (data[j] < data[lowIndex]) { Ev%4}GwO4
lowIndex = j; 5Tluxt71
} XP
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} Q^/66"Z:Z
SortUtil.swap(data,i,lowIndex); CFAz/x@%
} G+
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Shell排序: S{{D G
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package org.rut.util.algorithm.support; BbUZ,X*Y
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import org.rut.util.algorithm.SortUtil; XWZ
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/** B;Ab`UX#t
* @author treeroot 5WgdgDb@L
* @since 2006-2-2 DtG><g}[]
* @version 1.0 |1X^@
*/ ~Y@(
public class ShellSort implements SortUtil.Sort{ e4u$+
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/* (non-Javadoc) >/nS<y>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VS@o_fUx)
*/ kX."|]
public void sort(int[] data) { E8J`7sa
for(int i=data.length/2;i>2;i/=2){ +Tc<|-qQn
for(int j=0;j insertSort(data,j,i); OsPx-|f
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} zI8Q "b
} A>(m}P
insertSort(data,0,1); *,{. oO9#
} ;H/*%2
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/** z"bgtlfb8
* @param data ,Y=r]
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* @param j KG6ki_
* @param i &10vdAnBRC
*/ Ke,UwYG2~G
private void insertSort(int[] data, int start, int inc) { o)Kx:l +f
int temp; \ F#mwl,>"
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Q\&FuU
} .9+"rK}u
} k-xh-&
} &F9BaJ
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} R<{bb'
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快速排序: ~V[pu
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package org.rut.util.algorithm.support; zg+78
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import org.rut.util.algorithm.SortUtil; [
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/** dX{|-;6vm
* @author treeroot N~_GJw@
* @since 2006-2-2 &!]$#
* @version 1.0 ^qs=fF
*/ )a.Y$![
public class QuickSort implements SortUtil.Sort{ m619bzFlB
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/* (non-Javadoc) 4YM!S E-I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W_9-JM(r
*/ vt<r_&+ pJ
public void sort(int[] data) { W,5A|Q~
quickSort(data,0,data.length-1); U(3+*'8r,1
} /+pbO-r W*
private void quickSort(int[] data,int i,int j){ I>o+INb:
int pivotIndex=(i+j)/2; dawe!w!
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SortUtil.swap(data,pivotIndex,j); rM#jxAb
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int k=partition(data,i-1,j,data[j]);
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SortUtil.swap(data,k,j); ]c]rIOTN
if((k-i)>1) quickSort(data,i,k-1); asb-syqU
if((j-k)>1) quickSort(data,k+1,j); *,5V;7OR
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} w'z?1M(*
/** #y%bx<A
* @param data Q(
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* @param i 0ohpJh61Q
* @param j )$Xd#bzD|
* @return A9\m.3jo
*/ Y,?s-AB
private int partition(int[] data, int l, int r,int pivot) { Ks.m5R
do{ u"XqWLTV
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xr+K:
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SortUtil.swap(data,l,r); |E-/b6G
} -FV$Sne
while(l SortUtil.swap(data,l,r); =)vmX0vL
return l; /fbI4&SB!
} $7eO33Bm
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} hX?L/yf
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改进后的快速排序: p s=jGh[
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package org.rut.util.algorithm.support; pV{MW#e
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import org.rut.util.algorithm.SortUtil; ['ol]ZJ
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/** y
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* @author treeroot 8Kt_irD
* @since 2006-2-2 ^IGutZov
* @version 1.0 cZI )lX
*/ {E1g+><
public class ImprovedQuickSort implements SortUtil.Sort { l{F^"_U
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private static int MAX_STACK_SIZE=4096; RpPbjz~
private static int THRESHOLD=10; .|
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/* (non-Javadoc) BTjfzfO"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8"/5Lh(
*/ }ozlED`E
public void sort(int[] data) { ;> **+ezF
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; oVutHt
int pivot; gXN#<g,:^
int pivotIndex,l,r; ]Aap4+s
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stack[++top]=0; >y)(M(o
stack[++top]=data.length-1; Ug02G
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while(top>0){ <6^MVaD
int j=stack[top--]; {WUW.(^]G
int i=stack[top--]; y>wrm:b-O
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pivotIndex=(i+j)/2; ^(y=DJ7
pivot=data[pivotIndex]; wJ@8-H 8}
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SortUtil.swap(data,pivotIndex,j); <ABN/nH
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file://partition | n5F_RL
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do{ k_%2Ok
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); b);Pw"_2
SortUtil.swap(data,l,r); RaT(^b(
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while(l SortUtil.swap(data,l,r); Y,EReamp
SortUtil.swap(data,l,j); dd1m~Gm
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if((l-i)>THRESHOLD){ U;Z6o1G
stack[++top]=i; f"t\-ux.b
stack[++top]=l-1; {o"X8
} p6m](Jg
if((j-l)>THRESHOLD){ C{>@b:]p
stack[++top]=l+1; It'hmwu#
stack[++top]=j; #~?Q?"
} g+Vfd(e
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} 9Axk-c
file://new InsertSort().sort(data); amq]&.M
insertSort(data); wP28IB:^
} Y: &?xR
/** [^xLK
* @param data xc dy/J&
*/ #-
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private void insertSort(int[] data) { hZ|*=/3k
int temp; q !\Ht2$b
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #g[jwl'
} N),bhYS]
} (pM5B8U
} S|!)_RL
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归并排序: ULc oti=,
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package org.rut.util.algorithm.support; z-fP#.
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import org.rut.util.algorithm.SortUtil; ]-"~?
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/** $z,lq#zzl
* @author treeroot j<H`<S
* @since 2006-2-2 )W9W8>Cc5_
* @version 1.0 @Ee{ GH^-
*/ [of{~
public class MergeSort implements SortUtil.Sort{ pQ%~u3
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/* (non-Javadoc) *izPLM}+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *sK")Q4N
*/ kKr|PFz
public void sort(int[] data) { I>ks H
int[] temp=new int[data.length]; X`bN/sI
mergeSort(data,temp,0,data.length-1); _j{^I^P
} {~NiGHY
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private void mergeSort(int[] data,int[] temp,int l,int r){ \jL n5$OW
int mid=(l+r)/2; 0S8v41i6
if(l==r) return ; ]la8MaZ<