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。 Y0uvT7+[hi
插入排序: dXvt6kF
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package org.rut.util.algorithm.support; mS=r(3#
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import org.rut.util.algorithm.SortUtil; %FkLQ+v/<
/** $ACx*e%
* @author treeroot RNJFSD.
* @since 2006-2-2 ,32xcj}j)r
* @version 1.0 0NE{8O0;Fr
*/ ks(SjEF
public class InsertSort implements SortUtil.Sort{ oY9FK{
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/* (non-Javadoc) {+T/GBF-K=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R'K/t|MC
*/ D>ef
public void sort(int[] data) { T.&7sbE_
int temp; E0f{iO;}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {eZ{]
} :J_oj:0r"f
} <lwuTow
} _kraMQ>
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} Zc5
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冒泡排序: 3}Xc71|v
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package org.rut.util.algorithm.support; y.a]r7
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import org.rut.util.algorithm.SortUtil; D0bnN1VP
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/** ? 5|/
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* @author treeroot X T>('qy
* @since 2006-2-2 (|h:h(C
* @version 1.0 htJuGfDx1
*/ Iin#Wd-/
public class BubbleSort implements SortUtil.Sort{ =
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/* (non-Javadoc) [s6C
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7nE"F!d+0
*/ Epjff@7A
public void sort(int[] data) { #gZ|T
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int temp; Lk,+Tfk"
for(int i=0;i for(int j=data.length-1;j>i;j--){ [~%`N*G
if(data[j] SortUtil.swap(data,j,j-1); [/9(NUf
}
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} [1Dm<G
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选择排序: .[pUuVq]
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package org.rut.util.algorithm.support; d0UZ+ RR#
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import org.rut.util.algorithm.SortUtil; v <h;Di@
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/** qd2xb8r
* @author treeroot pM$ @m]
* @since 2006-2-2 uH{'gd,q8
* @version 1.0 !D:k!
*/ h8v>zNf'
public class SelectionSort implements SortUtil.Sort { %J P!{mqj
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/* d<T%`:s<
* (non-Javadoc) vA>W9OI
* L,M+sN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GW
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*/ wq\G|/%
public void sort(int[] data) { $$gtZ{ukQ
int temp; :YvbU Y
for (int i = 0; i < data.length; i++) { P;U@y"s
int lowIndex = i; zixEMi[8
for (int j = data.length - 1; j > i; j--) { KTmaglgp
if (data[j] < data[lowIndex]) { Alu5$6X
lowIndex = j; L|67f4
} ]Z@k|Nw
} [b1hC ~I;
SortUtil.swap(data,i,lowIndex); ;'1Apy
} $KQ,}I
} ]N}]d
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Shell排序: &o.iUk
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package org.rut.util.algorithm.support; $9H[3OZPVv
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import org.rut.util.algorithm.SortUtil; {hd-w4"115
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/**
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* @author treeroot yQ-hnlzn~
* @since 2006-2-2 WOb8"*OM
* @version 1.0 <%?uYCD
*/ 2PBepgQyPU
public class ShellSort implements SortUtil.Sort{ IwRQL%
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/* (non-Javadoc) yWuIu>VJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mjw[:70
*/ ^pw7o6}
public void sort(int[] data) { lC{L6&T
for(int i=data.length/2;i>2;i/=2){ <9N4"d!A
for(int j=0;j insertSort(data,j,i); a7 )@BzF#
} !E0fGh
} `,-STIh)
insertSort(data,0,1); gV`S%
} #M:B3C!ouY
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/** yk#rd~2Z0
* @param data bL
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* @param j sH@ &*
* @param i Nuq(4Yf1W
*/ JD-Becz
private void insertSort(int[] data, int start, int inc) { y4r2}8fi
int temp; eoL0^cZj
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %IU4\ZY>
} J~'~[,K
} "c EvFY
} ]:!8 s\#
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} v?{vg?vI
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快速排序: l]>!`'sJL
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package org.rut.util.algorithm.support; ~=Fk/
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import org.rut.util.algorithm.SortUtil; 'Ye]eL,I\
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/** -BjEL;
* @author treeroot 'N|2vbi<
* @since 2006-2-2 w&9F>`VET
* @version 1.0 W
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*/ 7s!AHyZ
public class QuickSort implements SortUtil.Sort{ H!#5!m&
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/* (non-Javadoc) epYj+T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Qp}|n1JY
*/ P2 |}*h5(
public void sort(int[] data) { ~{9x6<g!
quickSort(data,0,data.length-1); y]MWd#U
} 9M;I$_U`vj
private void quickSort(int[] data,int i,int j){ <G&WYk%u*
int pivotIndex=(i+j)/2; 2-P I JO
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SortUtil.swap(data,pivotIndex,j); Dn: Yi8=
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int k=partition(data,i-1,j,data[j]); A?\h|u<
SortUtil.swap(data,k,j); #% qqL
if((k-i)>1) quickSort(data,i,k-1); V02309Y
if((j-k)>1) quickSort(data,k+1,j); [;Vi~$p|Eo
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} )!BB/'DRQ
/** W;5N04ko
* @param data RLv&,$$0
* @param i "[Yip5
* @param j IM$'J
* @return bL+sN"Km
*/ T3 =)F%
private int partition(int[] data, int l, int r,int pivot) { gq=0L:
do{ W5TqC
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \]Kq(k[p
SortUtil.swap(data,l,r); HE9.
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} CzK%x?~]
while(l SortUtil.swap(data,l,r); >>/nuWdpO
return l; HW^{ ;'kH~
} R%Kl&c
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} qdKh6{
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改进后的快速排序: Ty)gPh6O
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package org.rut.util.algorithm.support; 0m
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import org.rut.util.algorithm.SortUtil; R/yPZO-U
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/** R65;oJh
* @author treeroot )tJL@Qo
* @since 2006-2-2 77)OW$G
* @version 1.0 9t,aT!f
*/ cKaL K#~
public class ImprovedQuickSort implements SortUtil.Sort { h]G6~TYI5
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private static int MAX_STACK_SIZE=4096; N;%j#(v
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private static int THRESHOLD=10; /^nP_ID
/* (non-Javadoc) E>o&GYc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) # Lu4OSM+
*/ {9y9Kr|(P:
public void sort(int[] data) { [RroHXdk+
int[] stack=new int[MAX_STACK_SIZE]; h}Fu"zK
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int top=-1; wI|bBfd(
int pivot; jJiCF,m
int pivotIndex,l,r; g`y/_
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stack[++top]=0; 89 _&X[X
stack[++top]=data.length-1; #MmmwPB_
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while(top>0){ 1',+&2)oj
int j=stack[top--]; {'cs![U
int i=stack[top--]; FZ;YvdX6
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