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。 u\x}8pn
插入排序: *@r/5pM2}
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package org.rut.util.algorithm.support; +L|?~p`V
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import org.rut.util.algorithm.SortUtil; Xe'x[(l
/** yZ(zdM\/sL
* @author treeroot -M~:lK]n
* @since 2006-2-2 d>&,9c%
* @version 1.0 #m<nAR
*/ i2U{GV<K-r
public class InsertSort implements SortUtil.Sort{ He/8=$c%
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/* (non-Javadoc) '!cCMTj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TnOggpQ6X
*/ qIE9$7*X
public void sort(int[] data) { [nG<[<0G;
int temp; <8i//HOE
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '8.r-`l(
} B+VubUPMS
} <X^@*79m
} eIEeb,#i
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冒泡排序: ufZDF=$7
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package org.rut.util.algorithm.support; VT`^W Hu
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import org.rut.util.algorithm.SortUtil; b:m88AG
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/** UiP"Ixg6
* @author treeroot 6|%?te x
* @since 2006-2-2 f#"J]p
* @version 1.0 {
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*/ n)e
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public class BubbleSort implements SortUtil.Sort{ vHc%z$-d
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/* (non-Javadoc) #ut
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AW'0,b`v
*/ Jk11fn;\>
public void sort(int[] data) { J T7nG.9
int temp; qu@~g cE
for(int i=0;i for(int j=data.length-1;j>i;j--){ xY8$I6
if(data[j] SortUtil.swap(data,j,j-1); t]g-CW3
} J26V nK
} A_ZY=jP
} :$|HNeDO
} 9Cp-qA%t
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} |?xN\O^#}
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选择排序: Zw9FJ/Zn@
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package org.rut.util.algorithm.support; O`\;e>!t
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import org.rut.util.algorithm.SortUtil; Hqx-~hQO
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/** hJ? O],4J
* @author treeroot [`[|l
* @since 2006-2-2 ^_W#+>&--
* @version 1.0 ,0Hr2*p
*/ mh#a#<
public class SelectionSort implements SortUtil.Sort { 4G0m\[Du
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/* )
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* (non-Javadoc) +oML&g-g_
* gp?uHKsM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6ex/TySM
*/ SmH=e@y~Lx
public void sort(int[] data) { /NFj(+&g+
int temp; QXFo1m
for (int i = 0; i < data.length; i++) { 1{.|+S Z!
int lowIndex = i; 70nqD>M4
for (int j = data.length - 1; j > i; j--) { L,`LN>
if (data[j] < data[lowIndex]) { X-Kh(Z
lowIndex = j; 9YyLf ;
} @ioJ]$o7
} U&OJXJdj
SortUtil.swap(data,i,lowIndex); 6l1jMm|=
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Shell排序: UHkMn
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package org.rut.util.algorithm.support; Lv7(st%`
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import org.rut.util.algorithm.SortUtil; QO~P7r|A
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/** 2- h{N
* @author treeroot q:0N<$63
* @since 2006-2-2 783,s_
* @version 1.0 >T-u~i$s
*/ *n
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public class ShellSort implements SortUtil.Sort{ q~o<*W
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/* (non-Javadoc) iHf $
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ED( Sg
*/ ..5CC;B
public void sort(int[] data) { + GN(Ug'R
for(int i=data.length/2;i>2;i/=2){ `HSKQ52
for(int j=0;j insertSort(data,j,i); _ <V)-Y
} ^
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} ,R\ \ %
insertSort(data,0,1); BwpqNQN
} MKk\
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/** xm~`7~nFR
* @param data ;xj?z\=Pg
* @param j |SSSH
* @param i /C:gKy4
*/ : *#- %0
private void insertSort(int[] data, int start, int inc) { o5PO=AN
int temp; 9Q.Yl&A
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vn8aFA
} o:'MpKm
} )dw'BNz5hT
} ec;o\erPG
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} T&bYa`f]
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快速排序: u
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package org.rut.util.algorithm.support; {}przrU^c
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import org.rut.util.algorithm.SortUtil; RbnVL$c
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/** &6!)jIWJ
* @author treeroot
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* @since 2006-2-2 #zs~," dRv
* @version 1.0 K5h
*/ *?vCC+c
public class QuickSort implements SortUtil.Sort{ H%tdhu\e
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/* (non-Javadoc) g$-PR37(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9.-S(ZO
*/ C{rcs'
public void sort(int[] data) { hi(;;C9
quickSort(data,0,data.length-1); 2F.;;Ab
} ADzhNfS
private void quickSort(int[] data,int i,int j){ 'IQ0{&EI
int pivotIndex=(i+j)/2; H*R"ntI?w
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SortUtil.swap(data,pivotIndex,j); U7F!Z(
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int k=partition(data,i-1,j,data[j]); =UQ3HQD
SortUtil.swap(data,k,j); 0s[Hkhls
if((k-i)>1) quickSort(data,i,k-1); CAhXQ7w'Z
if((j-k)>1) quickSort(data,k+1,j); iYoMO["X
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} X+9>A.92
/** ZLejcYS
* @param data ouQ T
* @param i M6jy\<a
* @param j ~36!?&eA8
* @return d7upz]K9g
*/ q|(HsLs
private int partition(int[] data, int l, int r,int pivot) { g!|kp?
do{ ;6$jf:2m
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _B<X`L
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SortUtil.swap(data,l,r); rb.N~
} #;e:A8IQ
while(l SortUtil.swap(data,l,r); 6bC3O4Rw
return l; x 9fip-
} 6H$FhJF
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} 6cXyJW
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改进后的快速排序: I\ob7X'Xu!
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package org.rut.util.algorithm.support; NXrlk
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import org.rut.util.algorithm.SortUtil; Xx:"4l.w.
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/** $U~]=.n
* @author treeroot m-, x<bM?
* @since 2006-2-2 PJH&
* @version 1.0 rV#ch(
*/ /U9"wvg
public class ImprovedQuickSort implements SortUtil.Sort { f]CXu3w(J
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private static int MAX_STACK_SIZE=4096; wmLs/:~
private static int THRESHOLD=10; YS0<qSN
/* (non-Javadoc) } q8ASYNc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :vbW
*/ ~]2K^bh8&
public void sort(int[] data) { 5rik7a)Z]
int[] stack=new int[MAX_STACK_SIZE]; kxv1Hn"`{E
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int top=-1; hwv/AnX~O
int pivot; \4fQMG
int pivotIndex,l,r; .Q2V}D85
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stack[++top]=0; b>ySv
stack[++top]=data.length-1; z2GY:<s
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while(top>0){ KZf+MSq?
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int j=stack[top--]; Q~Wqy~tS
int i=stack[top--]; s$j,9uRr
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pivotIndex=(i+j)/2; ww1[rCh\+
pivot=data[pivotIndex]; lThB2/tV\
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SortUtil.swap(data,pivotIndex,j); 8":Q)9;%
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file://partition |sE'XT4ag
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r=j; w}L[u
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do{ tCt#%7J;a
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); eaU
SortUtil.swap(data,l,r); Nh44]*
} ?:0Jav
while(l SortUtil.swap(data,l,r); (tW`=]z-<
SortUtil.swap(data,l,j); BI@[\aRLQ
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if((l-i)>THRESHOLD){ RViAwTvY
stack[++top]=i; 8}:nGK|kx
stack[++top]=l-1; FS.L\MjV]U
} 5b7RYV
if((j-l)>THRESHOLD){ `R^g U]Z,
stack[++top]=l+1; $6IJP\
stack[++top]=j; VIf.q)_k
} iy.\=Cs$N
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} N;%6:I./
file://new InsertSort().sort(data); f$QNg0v
insertSort(data); dWBA1p
} m1A J{cs
/** {)<v&'*c~
* @param data Ow,b^|
*/ *oix 6
private void insertSort(int[] data) { )4 ;`^]F
int temp; ,V}WM%Km
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qH_Dc=~la
} 1$ {SRU7l
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} S+lqA-:
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} !;'=iNOYR
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归并排序: dj%!I:Q>u
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package org.rut.util.algorithm.support; A3*!"3nU
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import org.rut.util.algorithm.SortUtil; qqU 64E
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/** V=3b&TkE
* @author treeroot Flb&B1
* @since 2006-2-2 ],].zlN
* @version 1.0 \'j|BJ~L f
*/ %&bY]w
public class MergeSort implements SortUtil.Sort{ gBD]}vo-
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/* (non-Javadoc) BJ(M2|VH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 08{@rOr
*/ Etm?'
public void sort(int[] data) { w4Z'K&