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。 JR)/c6j
插入排序: 8)Zk24:])_
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package org.rut.util.algorithm.support; XIRR Al(,
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import org.rut.util.algorithm.SortUtil; p qeL%="p;
/** H<Hrwy~
* @author treeroot <5I1 DF[
* @since 2006-2-2 LEK/mCL
* @version 1.0 0I
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*/ ]26mB
public class InsertSort implements SortUtil.Sort{ JpmB;aL#%
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/* (non-Javadoc) ]^ #`j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zP&q7 t;>
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public void sort(int[] data) { .'/l'>
int temp; b_=8!Q.:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2e.N"eLNt
} IA2GUnUhu
} b=1%pX_
} z,x"a
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} bDWeU}
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冒泡排序: /$:U$JVb?l
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package org.rut.util.algorithm.support; SX+4HJB
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import org.rut.util.algorithm.SortUtil; %2D17*eK
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/** ?/'}JS(Sm
* @author treeroot <0 uOq
* @since 2006-2-2 Qn.[{rw
* @version 1.0 P"F{=\V1`<
*/ jV^C19
public class BubbleSort implements SortUtil.Sort{ {6O0.}q]&
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/* (non-Javadoc) Z>2]Xx%
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]*;F. pZ
*/ Go <'
public void sort(int[] data) { 7F(5)Utt
int temp; 6Y7H|>g)
for(int i=0;i for(int j=data.length-1;j>i;j--){ <GF @L
if(data[j] SortUtil.swap(data,j,j-1); #6W,6(#^#
} kXwi{P3D$
} 8Z# 21X>
} jK3\K/ob(
} n3ZAF'
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} g19S
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选择排序: 6peyh_
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package org.rut.util.algorithm.support; eN/G i<
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import org.rut.util.algorithm.SortUtil; jPk
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/** &U"X$aFc
* @author treeroot )~
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* @since 2006-2-2 {DBIonY];
* @version 1.0 }
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*/ m^I,}1H4
public class SelectionSort implements SortUtil.Sort { 6E|S
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/* Yc`<S
* (non-Javadoc) 2
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* 6y
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oT&m4I
*/ M{Gxjmdx
public void sort(int[] data) { HZZDv+
int temp; B QjGv?p0s
for (int i = 0; i < data.length; i++) { )q3"t2-
int lowIndex = i; uGCp#>+
for (int j = data.length - 1; j > i; j--) { Q2s&L]L=
if (data[j] < data[lowIndex]) { B?6QMC;
lowIndex = j; (V?@?25
} YG[w@u
} Qn=$8!Qqa
SortUtil.swap(data,i,lowIndex); yn~P{}68
} JNo8>aFOb
} NK/4OAt%
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} Q~Ea8UT.#
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Shell排序: )`?%]D
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package org.rut.util.algorithm.support; 3M<!?%v\A
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import org.rut.util.algorithm.SortUtil; ai^|N.!
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/** x-_vl
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* @author treeroot GAl+Zg##
* @since 2006-2-2 ` |Fp^gM
* @version 1.0 6 hiC?2b{x
*/ 9UD
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public class ShellSort implements SortUtil.Sort{ Q`6i =mB;
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/* (non-Javadoc) (|u31[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .
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*/ <qeCso
public void sort(int[] data) { -:`V<
for(int i=data.length/2;i>2;i/=2){ |~e?,[-2`r
for(int j=0;j insertSort(data,j,i); ]P1YHw9
} `9 [i79U
} 'uC59X4l
insertSort(data,0,1); !O)qYmK]|
} >i~^TY-&
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/** ][:rLs
* @param data ZkWL_ H)
* @param j b^Cfhy^RTq
* @param i OhwF )p=
*/ O@&+} D>
private void insertSort(int[] data, int start, int inc) { tZ8e`r*
int temp; lLiQ ;@
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); wE Qi0!
} FPv"N'/
} l(:kfR~AC
} 2\@Z5m3B
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} _>_j\b
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快速排序: QLr9dnA
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package org.rut.util.algorithm.support; 4hAJ!7[A.
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import org.rut.util.algorithm.SortUtil; KIus/S5
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/** |g_g8[@`}
* @author treeroot ja T$gAx
* @since 2006-2-2 AsxD}Nw[Z*
* @version 1.0 nk@atK,38^
*/ n=!uNu7
public class QuickSort implements SortUtil.Sort{ /QxlGfNZ
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/* (non-Javadoc) .C!vr@@]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f
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*/ VmvQvQ/9R
public void sort(int[] data) { 3V;gW%>
quickSort(data,0,data.length-1); t;O1IMF
} I/uy>*
private void quickSort(int[] data,int i,int j){ 8r:M*25
int pivotIndex=(i+j)/2; \b8\Ug~t
file://swap .i/m
SortUtil.swap(data,pivotIndex,j); ht6244:
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int k=partition(data,i-1,j,data[j]); `_qK&&s
SortUtil.swap(data,k,j); O)#U ^
if((k-i)>1) quickSort(data,i,k-1); k`VM2+9h'^
if((j-k)>1) quickSort(data,k+1,j); $c9k*3{<+A
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} A
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/** f)NHM'
* @param data K+d2m9C=
* @param i jRj=Awy
* @param j X6@w krf-
* @return !G?gsW0\h
*/ M+Uyb7
private int partition(int[] data, int l, int r,int pivot) { %1}6q`:w
do{ "(TkJbwC[
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g8pO
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SortUtil.swap(data,l,r); &M[f&_"8Q
} WES#ZYtT
while(l SortUtil.swap(data,l,r); =r4!V>
return l; 8q^o.+9
} g>j| ]6
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} f =s&n}
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改进后的快速排序: l-)Bivoi
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; QMp rv*i
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/** d7Ro}>lp
* @author treeroot Xu} U{x>
* @since 2006-2-2 \caH pof
* @version 1.0 rT6?!$"%.
*/ d8x%SQ!V
public class ImprovedQuickSort implements SortUtil.Sort { `8g7q 5
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private static int MAX_STACK_SIZE=4096; a.%LHb
private static int THRESHOLD=10; fi%r<]@
/* (non-Javadoc) p{tK_ZBy]c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %s=Dj2+
*/ #I0pYA2m
public void sort(int[] data) { jAhP>
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int[] stack=new int[MAX_STACK_SIZE]; B6M+mx"G
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int top=-1; IOl+t,0x&
int pivot; l*}FXL
int pivotIndex,l,r;
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stack[++top]=0; \~DM
stack[++top]=data.length-1; t~p
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while(top>0){ Akk
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int j=stack[top--]; :0~QRc-u
int i=stack[top--]; \;9W.d1iU
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pivotIndex=(i+j)/2; -,#+`>w
pivot=data[pivotIndex]; !{UTD+|=N
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SortUtil.swap(data,pivotIndex,j); AHbZQulC
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file://partition TwahR:T
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r=j; b>=_*nw9
do{ ~^US/"
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); LJTo\^*
SortUtil.swap(data,l,r); DSyXr~p8
} X_ TiqV
while(l SortUtil.swap(data,l,r); NC"yDWnO'
SortUtil.swap(data,l,j); rpV1y$n<F
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if((l-i)>THRESHOLD){ L'A)6^d@S
stack[++top]=i; Y "jE'
stack[++top]=l-1; .zj0Jy8N
} E4%j.
if((j-l)>THRESHOLD){ X(AN)&L[
stack[++top]=l+1; 4[2_,9}
stack[++top]=j; /DFV$+9
} }VCI=?-
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} 6[ga$nF?
file://new InsertSort().sort(data); 2W<n5o
insertSort(data); <z)m%*lvU
} g.DLfwI|
/** vfc[p ^
* @param data @w9{5D4
*/ FQsUm?ac:
private void insertSort(int[] data) { vzo4g,Bj
int temp; &Z^(y}jPr
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9^ed-h
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} KG9t3<-`
} zc+@lJy
}
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归并排序: 3'I^lc
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package org.rut.util.algorithm.support; MmoR~~*
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import org.rut.util.algorithm.SortUtil; 7(k^a)~PL
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/** Kx`/\u=/
* @author treeroot +Wn&