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。 n!ZMTcK8
插入排序: ~Po<(A}`f
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package org.rut.util.algorithm.support; cM3jnim
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import org.rut.util.algorithm.SortUtil; M_Bu,<q^
/** Y17hOKc`
* @author treeroot 8&%Cy'TIz4
* @since 2006-2-2 7#ofNH J
* @version 1.0 ZNi
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*/ +>!V]S
public class InsertSort implements SortUtil.Sort{ SnW7 x
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/* (non-Javadoc) ;`+`#h3-V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m^Glc?g<
*/ Pubv$u2
public void sort(int[] data) { q(gjT^aN
int temp; ;,k=<]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pl|h>4af
} 9p4y>3
} :> SLQ[1
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冒泡排序: %&h c"7/k
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package org.rut.util.algorithm.support; n}JPYu
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import org.rut.util.algorithm.SortUtil; *}w+68eO
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/** pw\P<9e=
* @author treeroot oR#Ob#&
* @since 2006-2-2 >g]ON9CGH
* @version 1.0 Plfdr~$
*/ N'QqJe7Z
public class BubbleSort implements SortUtil.Sort{ 9,scH65x
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/* (non-Javadoc) V&%C\ns4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a.q;_5\5`
*/ +Ofa#^5);K
public void sort(int[] data) { <bP#H
int temp; cI:-Z{M7z
for(int i=0;i for(int j=data.length-1;j>i;j--){ '#q4Bc1
if(data[j] SortUtil.swap(data,j,j-1); bY)#v?
} 45<y{8
}
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} 'mE^5K
} cDIBDC
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选择排序: UV@0gdy[
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package org.rut.util.algorithm.support; [Gtb+'8
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import org.rut.util.algorithm.SortUtil; E7`qmn
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/** +rc SL8C
* @author treeroot Q|c|2byb
* @since 2006-2-2 $gvr
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* @version 1.0 ?:uNN
*/ VD[pZ2;4
public class SelectionSort implements SortUtil.Sort { "VTF}#Uo
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/* DpvrMI~I_
* (non-Javadoc) t7*#[x)a
* ^~1<f1(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wd+K`I/v7h
*/ `5l01nOxJ
public void sort(int[] data) { WbcS: !0
int temp; 4TZ cc|B5
for (int i = 0; i < data.length; i++) { J#
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int lowIndex = i; :c=.D;,
for (int j = data.length - 1; j > i; j--) { cbYK5fj"T
if (data[j] < data[lowIndex]) { (s&&>M]r_
lowIndex = j; ?JXa~.dA
} UQPU"F7.
} g)1X&>
SortUtil.swap(data,i,lowIndex); dYF=c
} 1m)M;^_
} [>Fm[5x
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Shell排序: ,b|-rU\
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package org.rut.util.algorithm.support; :NE/Ddgc'
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import org.rut.util.algorithm.SortUtil; ^$NJD
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/** ^ R~~L
* @author treeroot Q2QY* A
* @since 2006-2-2 f~ U.a.Fb
* @version 1.0 >5ChcefH
*/ ,;jGJr
public class ShellSort implements SortUtil.Sort{ m3 -9b"
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/* (non-Javadoc) N`$!p9r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3WUH~l{UJ
*/ 27#5y_
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public void sort(int[] data) { D$q'FZH
for(int i=data.length/2;i>2;i/=2){ RN9;kB)c
for(int j=0;j insertSort(data,j,i); :L:&t,X
} fY W|p<Q0
} 4XJiIa?
insertSort(data,0,1); Gquuy7[&
} $NG++N
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/** Z :nbZHByh
* @param data $k%Z$NSN=
* @param j :YO@_
* @param i sWqM?2g
*/ l,`!rF_
private void insertSort(int[] data, int start, int inc) { 5kMWW*Xtf
int temp; @S3f:s0~D
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Yj3I5RG
} XKU=oI0\j
} <<zI\+V
} )^x K
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} {C3Y7<
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快速排序: KoBW}x9Jp
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package org.rut.util.algorithm.support; {hdPhL
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import org.rut.util.algorithm.SortUtil; `dW]4>`O
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/** \".^K5Pm
* @author treeroot Zv!{{XO2;
* @since 2006-2-2 ,r^"#C0J}
* @version 1.0 57I}RMT"
*/ 8P: spD0
public class QuickSort implements SortUtil.Sort{ F-
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/* (non-Javadoc) P'$ `'J]j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u8L$]vOg
*/ I;MD>%[W,
public void sort(int[] data) { fiDl8=~@
quickSort(data,0,data.length-1); V5mTu)tp5
} (6gK4__}]
private void quickSort(int[] data,int i,int j){ )"<8K}%!
int pivotIndex=(i+j)/2; :d,^I@]
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SortUtil.swap(data,pivotIndex,j); N#z~
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int k=partition(data,i-1,j,data[j]); m$2<`C=
SortUtil.swap(data,k,j); q1{H~VSn"
if((k-i)>1) quickSort(data,i,k-1); ^{yk[tHpS
if((j-k)>1) quickSort(data,k+1,j); {2KFD\i\
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} zGlZ!t:
/** L}k/9F.5
* @param data K_&MoyJJ9f
* @param i 9S7A!AKE
* @param j h2q/mi5{
* @return >Aq:K^D/3F
*/ p( LZ)7/
private int partition(int[] data, int l, int r,int pivot) { aX6}6zubr
do{ KY9n2u&4
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =:I+6PlF@
SortUtil.swap(data,l,r); , H
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}
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while(l SortUtil.swap(data,l,r); Yl^mAS[w&
return l; _}6q{}jn:c
} E/b"RUv}h
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} ;0%OB*lcgE
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改进后的快速排序: 83Ou9E!W
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package org.rut.util.algorithm.support; K\?]$dK5
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import org.rut.util.algorithm.SortUtil; {dWObh
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/** e":G*2a
* @author treeroot vGd1w%J-
* @since 2006-2-2 &, a3@i
* @version 1.0 9$*s8}|
*/ 7<\C?`q"
public class ImprovedQuickSort implements SortUtil.Sort { C(?blv-vM0
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private static int MAX_STACK_SIZE=4096; t T%/r,
private static int THRESHOLD=10; Ri7((x]H"
/* (non-Javadoc) t67Cv/r~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L:&k(YOBA
*/ X` YwP/D
public void sort(int[] data) { ]+Ixi o
int[] stack=new int[MAX_STACK_SIZE]; \,G#<>S
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int top=-1; Tl("IhkC
int pivot; >bo'Y9C
int pivotIndex,l,r; _GYMPq\%L#
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stack[++top]=0; Vm1-C<V9
stack[++top]=data.length-1; A<MtKb
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while(top>0){ VR?^HA9
int j=stack[top--]; 19e8
int i=stack[top--]; #s5N[uK^m
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pivotIndex=(i+j)/2; olux6RP[B
pivot=data[pivotIndex]; }?8uH/+ZA
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SortUtil.swap(data,pivotIndex,j); }:Z9Vc ZP`
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file://partition 9)dfL?x8V{
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r=j; $4=f+ "z
do{ RVw9Y*]b
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); clO,}Ph>
SortUtil.swap(data,l,r); k+ o|0
} 7 A$B{
while(l SortUtil.swap(data,l,r); 2 ][DZl
SortUtil.swap(data,l,j); &