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。 6"PwOEt
插入排序: +x:-W0C:
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package org.rut.util.algorithm.support; >7j(V`i"y
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import org.rut.util.algorithm.SortUtil; t}A n:
/** ppXt8G3%x
* @author treeroot w?Nx^)xX
* @since 2006-2-2 w/Ej>OS
* @version 1.0 h&Q9
*/ O({vHqN>
public class InsertSort implements SortUtil.Sort{ gW_^GrK pI
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/* (non-Javadoc) ]CZ&JL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZW>?y$C+
*/ vddh 2G
public void sort(int[] data) { BBUXoz
int temp; i=DoK{`L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8"2X 8C8
} .pd_SQ~
} 9_5tA'Q
} WzxDnd<B
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} u>I;Cir4
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冒泡排序: "H!2{l{
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package org.rut.util.algorithm.support; *3r{s'm
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import org.rut.util.algorithm.SortUtil; Kl)PF),
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/** T.R(
* @author treeroot j@b18wZ
* @since 2006-2-2 2Y'=~*tV
* @version 1.0 Y/aNrIK7
*/ H;nq4;^yK
public class BubbleSort implements SortUtil.Sort{ }iF"&b0n"
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/* (non-Javadoc) Gkq<?q({t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d}e/f)(
*/ |e#ea~/b
public void sort(int[] data) { a}]zwV&
int temp; \JX.)&>
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for(int i=0;i for(int j=data.length-1;j>i;j--){ I_/kJ#7vj
if(data[j] SortUtil.swap(data,j,j-1); #6 yi
} {2,OK=XM|
} \%ZF<sVW
} p"XQJUuD
} I%q&4L7pj
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选择排序: eE'2B."F
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package org.rut.util.algorithm.support; kb>/R/,9
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import org.rut.util.algorithm.SortUtil; ]\Tcy [5
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/** (&x#VmDL
* @author treeroot K[(h2&
* @since 2006-2-2 &v#*
* @version 1.0 z9#iU>@
*/ 1*!`G5c,}
public class SelectionSort implements SortUtil.Sort { *0aU(E#
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/* WV'FW)%
* (non-Javadoc) `1$7. ydQ
* R;*3";+v|:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N>$Nw<wV
*/ t6)wR
public void sort(int[] data) { !pNY`sw}
int temp; 8yDu(.Q
for (int i = 0; i < data.length; i++) { 1Lf:TQB
int lowIndex = i; [|\JIr=of5
for (int j = data.length - 1; j > i; j--) { k^IC"pUc
if (data[j] < data[lowIndex]) { Jm+hDZrW
lowIndex = j; .CL\``
} 6jRUkI-!
} ~Z'3(n*9
SortUtil.swap(data,i,lowIndex); |<n+6
} K8l|qe
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} \HzI*|*A
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Shell排序: <R.5Ma
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package org.rut.util.algorithm.support; m-Uq6_e
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import org.rut.util.algorithm.SortUtil; 3PEv.hGx
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/** cIO7RD$8
* @author treeroot Jz!8Xg%a
* @since 2006-2-2 n~#%>C7
* @version 1.0 9W{=6D86e
*/ }lk_Oe1
public class ShellSort implements SortUtil.Sort{ L.[ H
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/* (non-Javadoc) 'wd-!aZAd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }wh)I]]U
*/ 62&(+'$n
public void sort(int[] data) { Ew=8"V`C
for(int i=data.length/2;i>2;i/=2){ 1r?<1vh:z
for(int j=0;j insertSort(data,j,i); |8$x
} \S)\~>.`y!
} ?dukK3u
insertSort(data,0,1); TvE M{
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/** P8Bv3
* @param data X;7gh>Q'4
* @param j &cSTem
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* @param i 9ZL3p!
*/ @LS*WJ< w-
private void insertSort(int[] data, int start, int inc) { 8"4&IX
int temp; lEBt<
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,OX(z=i_
} oyBBW?m
} ;~$_A4;
} xq2{0q
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} x?:[:Hf
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快速排序: -bo5/`x
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package org.rut.util.algorithm.support; jmbwV,@Q2
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import org.rut.util.algorithm.SortUtil; }@Ij}Ab>
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/** _-&\~w
* @author treeroot ~Cx07I_lf
* @since 2006-2-2 YK/?~p9:
* @version 1.0 |hjm^{!TpW
*/ u=h:d+rq@
public class QuickSort implements SortUtil.Sort{ $ ZD1_sJ.
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/* (non-Javadoc) :A\8#]3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) njveZav
*/ r^mP'#
public void sort(int[] data) { ,YYyFMC7S
quickSort(data,0,data.length-1); XO+^q9
} ugEh}3
private void quickSort(int[] data,int i,int j){ wuCiO;w
int pivotIndex=(i+j)/2; ^[noGjy
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SortUtil.swap(data,pivotIndex,j); \`\& G-\
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int k=partition(data,i-1,j,data[j]); .eAN`-t;
SortUtil.swap(data,k,j); QAigbSn]
if((k-i)>1) quickSort(data,i,k-1); G[1:<Vg8
if((j-k)>1) quickSort(data,k+1,j); N/QTf1$
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} n*6Oa/JG7
/** cv(9v =](
* @param data EELS-qA
* @param i ,y}?Z8?63
* @param j 5w)tsGX\
* @return e`%U}_[d
*/ "d60IM#N?
private int partition(int[] data, int l, int r,int pivot) { hA.?19<Z
do{ Vu '3%~
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); TT3GFP
SortUtil.swap(data,l,r); \kU0D
} aA?Uf~ "t
while(l SortUtil.swap(data,l,r); ;Bk?,g
return l; x2*l5t
} n`Pwo&
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} eAh~`
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改进后的快速排序: Eg&xIyR