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。 N>nvt.`P
插入排序: Uh|__DUkh
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package org.rut.util.algorithm.support; 4{pemqS*
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import org.rut.util.algorithm.SortUtil; wq_oh*"
/** iZq@W3GL
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* @author treeroot rX>y>{w~
* @since 2006-2-2 %}ApO{
* @version 1.0 n-b<vEZw#
*/ UK<DcM~n
public class InsertSort implements SortUtil.Sort{ Rn~Xu)@e
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/* (non-Javadoc) 61rh\<bn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ ;`PkmAg
public void sort(int[] data) { j.'"CU
int temp; {|J2clL
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .iN*V|n
} JTh=JHJ
} Nj-rZ%&
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冒泡排序: Is6']bYh
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package org.rut.util.algorithm.support; oJJk
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import org.rut.util.algorithm.SortUtil; //5_E7Ehu$
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/** P "_}F
* @author treeroot 2l(j
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* @since 2006-2-2 >fj$wOq
* @version 1.0 O-lh\9{'R
*/ [O+^eE6h
public class BubbleSort implements SortUtil.Sort{ yqb<<4I
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/* (non-Javadoc) - QI`npsnV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I nK)O';
*/ f<sPh>n
public void sort(int[] data) { L8tLW09
int temp; @bCiaBdi
for(int i=0;i for(int j=data.length-1;j>i;j--){ t{s*3k/
if(data[j] SortUtil.swap(data,j,j-1); 2T%f~yQ^
} +M]8_kE=+l
} {BCjVmY
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} j4SGA#;v
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选择排序: 7c]Ai
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; [=F
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/** b{>dOI*.}
* @author treeroot Hf{%N'4
* @since 2006-2-2 4^ 6L ])y
* @version 1.0 GiwA$^Hg\
*/ W8h\ s {
public class SelectionSort implements SortUtil.Sort { tRBK1h
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/* 9ufs6z
* (non-Javadoc) SY)$2RC+}
* 5@%-=87S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "$pgmf2
*/ &*GX:0=/>
public void sort(int[] data) { Y(Ezw !a
int temp; oz-I/g3go
for (int i = 0; i < data.length; i++) { -%)
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int lowIndex = i; 0%NI-
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for (int j = data.length - 1; j > i; j--) { xF|*N<9(</
if (data[j] < data[lowIndex]) { \U>Kn_7m
lowIndex = j; %{abRBny
} :Ia&,;Gc
} xG/qDc
SortUtil.swap(data,i,lowIndex); S5a<L_
} 7zZ|=W?&{
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} S
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Shell排序: Vp{2Z9]}
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package org.rut.util.algorithm.support; &ru0i@?)
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import org.rut.util.algorithm.SortUtil; !PIdw~YC
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/** j!7Uj]
* @author treeroot !OgoV22
* @since 2006-2-2 j)qh>y)
* @version 1.0 {o%R~{6
*/ (SA*9%
public class ShellSort implements SortUtil.Sort{ yo?Q%w'Nh
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/* (non-Javadoc) 8:fiO|~%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N&`ay{&`:
*/ cpnwx1q@
public void sort(int[] data) { :zRboqe(cc
for(int i=data.length/2;i>2;i/=2){ pk1M.+
for(int j=0;j insertSort(data,j,i); N@0scfO6<
} G3?z.5,Q
} LWV`xCr8R
insertSort(data,0,1); &}1)]6q$
} NLY5L7
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/** <-}\V!@E!
* @param data +(%[f W
* @param j {hz:[
* @param i >O~5s.1u
*/ lZ_k307
private void insertSort(int[] data, int start, int inc) { E76:}(
int temp; HXI}f\6x
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `0:@`)&g1
} 0aWb s$FyU
} eVXbYv=gJ@
} kM`#U
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} {eUfwPAa3
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快速排序: |e&Kg~~C
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package org.rut.util.algorithm.support; 2-84
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import org.rut.util.algorithm.SortUtil; 8t%1x|!
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/** +$5^+C\6A
* @author treeroot K#r`^aUc
* @since 2006-2-2 7I|Mq
* @version 1.0 X)m2{@v D
*/ GWKefH
public class QuickSort implements SortUtil.Sort{ 4NV1v&"
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/* (non-Javadoc) mz1g8M`@[D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o@. !Z8
*/ uE(w$2Wi
public void sort(int[] data) { )
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quickSort(data,0,data.length-1); .Ko`DH~!,C
} hM}2++V
private void quickSort(int[] data,int i,int j){ uk,f}Xc
int pivotIndex=(i+j)/2; z@~rm9d
file://swap zdCt#=QV?R
SortUtil.swap(data,pivotIndex,j); >pKI'
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int k=partition(data,i-1,j,data[j]); 8@-US ,|
SortUtil.swap(data,k,j); uypD`%pC
if((k-i)>1) quickSort(data,i,k-1); X*KT=q^?n
if((j-k)>1) quickSort(data,k+1,j); *?{)i~
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} #Z : r
/** \#slZ;&s
* @param data B_>
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* @param i YC~+r8ME$j
* @param j &3<]FK
* @return !?{5ET,gtN
*/ GfDA5v[
private int partition(int[] data, int l, int r,int pivot) { zw?6E8$h
do{ +Ji dP
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -IE;5f#e
SortUtil.swap(data,l,r); X`&E,;bIb
} Gx
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while(l SortUtil.swap(data,l,r); bTj,5,8i
return l; "T PMSx&Ei
} rgr> ;
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} 6o!"$IH4
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改进后的快速排序: WVZ\4y
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package org.rut.util.algorithm.support; 5gGr|d|(
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import org.rut.util.algorithm.SortUtil; y^ohns5{
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/** "'%x|nB
* @author treeroot XIU2l}g
* @since 2006-2-2 `g7'
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* @version 1.0 "='|c-x
*/ ZP1EO Z
public class ImprovedQuickSort implements SortUtil.Sort { R0Qp*&AL
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private static int MAX_STACK_SIZE=4096; $/Mk.(3'P
private static int THRESHOLD=10;
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/* (non-Javadoc) :H~r
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bz1\EkLL
*/ Y #\e~>K
public void sort(int[] data) { PqfH}d0l
int[] stack=new int[MAX_STACK_SIZE]; p?Y1^/
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int top=-1; jsuQR
int pivot; l!
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int pivotIndex,l,r; Xr@0RFdr[
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stack[++top]=0; sviGS&J9h
stack[++top]=data.length-1; ~!@a
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while(top>0){ 3 Tt8#B
int j=stack[top--]; t ,0~5>5
int i=stack[top--]; Xs4`bbap
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pivotIndex=(i+j)/2; by-B).7
pivot=data[pivotIndex]; a}6Wo=
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SortUtil.swap(data,pivotIndex,j); tYnNOK*|
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file://partition +?%huJYK,
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do{ <MoWS9s!yb
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); xR$xAcoSB
SortUtil.swap(data,l,r); WO|#`HM2
} 9T)-|fja_
while(l SortUtil.swap(data,l,r); vuHqOAFNs
SortUtil.swap(data,l,j); RK|C* TCnl
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if((l-i)>THRESHOLD){ Y6+nfh_
stack[++top]=i; YqYCW}$
stack[++top]=l-1; -e30! A
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if((j-l)>THRESHOLD){ ZZ#S\*
stack[++top]=l+1; L \pe
stack[++top]=j; ='a$>JVJ5
}
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} ^ [2A<
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file://new InsertSort().sort(data); IG
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insertSort(data); Q1g@FsW&U
} S_WYU&8
/**
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* @param data MC^H N w
*/ =}F &jl
private void insertSort(int[] data) { 2}K7(y!?u
int temp; =j6f/8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o@vo,JU
} +g%kr~w=
} aH*)W'N?
} Y`w+?}(M
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} qy"#XbBeV
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归并排序: ,F]Y,"x:
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package org.rut.util.algorithm.support; K08xiMjl
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import org.rut.util.algorithm.SortUtil; pri=;I(2A
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/** P-.>vi^+
* @author treeroot |\Nu+w
* @since 2006-2-2 '(r/@%=U
* @version 1.0 ?Mtd3F^o?
*/ N[:;f^bH49
public class MergeSort implements SortUtil.Sort{ nDhr;/"i
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/* (non-Javadoc) +iY .Y V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q,(U 8
*/ fYBmW')
public void sort(int[] data) { u1R_u9
int[] temp=new int[data.length]; nkUSd}a`r
mergeSort(data,temp,0,data.length-1); OrNi<TY>
} hCS|(8g
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private void mergeSort(int[] data,int[] temp,int l,int r){ ihS;q6ln
int mid=(l+r)/2; V.?N29CA|
if(l==r) return ; -{n2^vvF
mergeSort(data,temp,l,mid); >)\x\e
mergeSort(data,temp,mid+1,r); p~Di\AQ/
for(int i=l;i<=r;i++){ AwN7/M~'
temp=data; FxeDjAP
} "^Y)&