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。 zX&wfE8T
插入排序: \0z<@)r+AJ
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package org.rut.util.algorithm.support; $rH}2
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import org.rut.util.algorithm.SortUtil; >C/O >g
/** K(Ak+&[
* @author treeroot Yn8aTg[J
* @since 2006-2-2 !6eF8T
* @version 1.0 U9h@1:
*/ @vvGhJ1m`
public class InsertSort implements SortUtil.Sort{ &Tk@2<5=
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/* (non-Javadoc) d?4-"9Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A'T: \Wl
*/ en29<#8TO
public void sort(int[] data) { {r1}ACw{
int temp; UKf0cU
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?xtP\~
} xU'% 6/G
} 7DIFJJE'
} Mgg m~|9)
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} S3?U-R^`
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冒泡排序: I=&Kn@^
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package org.rut.util.algorithm.support; D@yu2}F{IY
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import org.rut.util.algorithm.SortUtil; +P;&/z8i*g
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/** Cm#[$T@C
* @author treeroot rIJd(=
* @since 2006-2-2 }N
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* @version 1.0 =yLJGNK[
*/ Ypw:Vp
public class BubbleSort implements SortUtil.Sort{ jCL 1Bj
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/* (non-Javadoc) wQN/MYF[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /t_AiM,(
*/ pFwhvw
public void sort(int[] data) { CF/8d6}Vf
int temp; z460a[Wl
for(int i=0;i for(int j=data.length-1;j>i;j--){ q 1+{MPJ
if(data[j] SortUtil.swap(data,j,j-1); 4_h?E:sBb
} [,ZHn$\
} 5VGr<i&A
} >+2gAO!
} OLyl.#J
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} F'^?s= QX
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选择排序: _:VIlg
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package org.rut.util.algorithm.support; YF<U'EVU-
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import org.rut.util.algorithm.SortUtil; sjwD x0(7=
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/** L] !M1\
* @author treeroot "$PX[:
* @since 2006-2-2 @JpkG%eK
* @version 1.0 !s(s^
*/ \Culf'iX
public class SelectionSort implements SortUtil.Sort { ,2lH*=m;
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/* 9u] "($
* (non-Javadoc) &``nYI g/
* T#-U\C~o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @;h$!w<
*/ fb D
public void sort(int[] data) { `8G {-_
int temp; OQh4MN#$
for (int i = 0; i < data.length; i++) { XJZS}Z7h
int lowIndex = i; z9HUI5ns
for (int j = data.length - 1; j > i; j--) { v?`DP
if (data[j] < data[lowIndex]) { kr>F=|R]
lowIndex = j; TV*@h2C"i
} E{}Vi>@V?
}
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SortUtil.swap(data,i,lowIndex); z*G(AcS)
} v_NL2eQ~
} #lO~n.+P
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} ~?uch8H
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Shell排序: 0'~Iv\s
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package org.rut.util.algorithm.support; NLF6O9
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import org.rut.util.algorithm.SortUtil; PR~9*#"v..
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/** n_@cjO
* @author treeroot _A,mY6*
* @since 2006-2-2 {qL}:ha?
* @version 1.0 b0
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*/ ::2(pgH
public class ShellSort implements SortUtil.Sort{ \wxLt}T-Q
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/* (non-Javadoc) @]X5g8h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $gysy!2}.
*/ =JfSg'7
public void sort(int[] data) { Vl%jpjqP
for(int i=data.length/2;i>2;i/=2){ (v1~p3H
for(int j=0;j insertSort(data,j,i); oO][X
} 4-Cca
} `rZS\A
insertSort(data,0,1); 1$1P9x@H
} :V^|}C#
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/** {x<yDDIv_
* @param data 6$LQO),,
* @param j Z$:iq
* @param i Wd]MwDcO
*/ *1CZRfWI
private void insertSort(int[] data, int start, int inc) { q1vsvL9Q
int temp; JFh_3r'
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); KIYs[0*k
} #Iwxt3K
} #Hi$squJ
} Bf{c4YiF
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} jRNDi_u?Wb
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快速排序: eD?f|bif
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package org.rut.util.algorithm.support; zHk7!|%Y
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import org.rut.util.algorithm.SortUtil; q@Oe}
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/** x5 ?>y{6D
* @author treeroot d.t$VRO
* @since 2006-2-2 ]Ofs,U^
* @version 1.0 Pj{Y
*/ #D|n6[Y'.t
public class QuickSort implements SortUtil.Sort{ E>Lgf&R#W
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/* (non-Javadoc) raCgctYVq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D%!GY1wdn
*/ F7 IZ;4cp
public void sort(int[] data) { Q+a"Z^Z|
quickSort(data,0,data.length-1); "]ZDs^7
} :FX|9h
private void quickSort(int[] data,int i,int j){ t(:w):zE
int pivotIndex=(i+j)/2; ;T*o
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SortUtil.swap(data,pivotIndex,j); -&JQdrs
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int k=partition(data,i-1,j,data[j]); _FtsO<p)"
SortUtil.swap(data,k,j); QI*<MF,1
if((k-i)>1) quickSort(data,i,k-1); ,WQg.neOA
if((j-k)>1) quickSort(data,k+1,j); v]X*(e
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} xvTz|Y
/** #9CLIYJAd
* @param data G*%:"qleT$
* @param i ~NG+DyGa=
* @param j ^j]_MiA4
* @return 9s&Tv&%VN
*/ 5Sx.'o$
private int partition(int[] data, int l, int r,int pivot) { l'
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do{ lL"ANlX-P
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ki'CW4x
SortUtil.swap(data,l,r); !8OgaMngzF
} -~v1@
while(l SortUtil.swap(data,l,r); &AP`k
return l; *I9O+/,
} /MZ^;XG
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} Aqo90(jffx
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改进后的快速排序: 7mtX/w9
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; tQ(4UHqa~
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/** oMHTB!A=2
* @author treeroot yZkS
* @since 2006-2-2 {3!E8~
* @version 1.0 t[o_!fmxZ
*/ '^%k TNn
public class ImprovedQuickSort implements SortUtil.Sort { ,)ZI&BL5
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private static int MAX_STACK_SIZE=4096; 2B"&WKk
private static int THRESHOLD=10; frT<9$QUL
/* (non-Javadoc) y-N]{!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fx )BMP
*/ ZY=a[K
public void sort(int[] data) { tr|)+~x3
int[] stack=new int[MAX_STACK_SIZE]; OxqkpK&
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int top=-1; UX%J?;g
int pivot; 45;ey }8
int pivotIndex,l,r; %
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stack[++top]=0; a!B"WNb+
stack[++top]=data.length-1; bXk(wXX
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while(top>0){ pD;fFLvN
int j=stack[top--]; :f~qt%%/
int i=stack[top--]; }/2M?W0
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pivotIndex=(i+j)/2; *" +u^
pivot=data[pivotIndex]; %S/?Ci
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SortUtil.swap(data,pivotIndex,j); '9!J' [W
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file://partition u=t.1eS5
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r=j; ZlP+t>
do{ X}H?*'-
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); U=PTn(2
SortUtil.swap(data,l,r); ^@^K
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} ?NR&3q
while(l SortUtil.swap(data,l,r); $4q$!jB5
SortUtil.swap(data,l,j); G`RQl@W>)(
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if((l-i)>THRESHOLD){ "3/&<0k
stack[++top]=i; }:57Ym)7w
stack[++top]=l-1; 7 j6<
} B>g(i=E
if((j-l)>THRESHOLD){ u9fJ:a
stack[++top]=l+1; y/+IPR
stack[++top]=j; Q89fXi0Ivb
} Z)md]Twt
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} }$i/4?dYsQ
file://new InsertSort().sort(data); +t3o5&
insertSort(data); ~*x 2IPiH
} V!/9GeIF
/** */2nh%>$
* @param data 3OFI>x,h
*/ bEln.)
private void insertSort(int[] data) { &f2:aT)
int temp; 54=*vokX_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %j.n^7i]^:
} I-#7Oq:Np
} GSW%~9WBa
} pQ>|dH+.
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} Jj?HOtaM
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归并排序: RL3*fRlb
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package org.rut.util.algorithm.support; ~r~YR=
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import org.rut.util.algorithm.SortUtil; sNM ]bei
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