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。 bgqN&J)Jr)
插入排序: v&i M/pJU
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package org.rut.util.algorithm.support; ?3kfhR
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import org.rut.util.algorithm.SortUtil; Y<X%'Wd\
/** FJKt5}`8
* @author treeroot o8BbSZVu
* @since 2006-2-2 s<H0ka@
* @version 1.0 K&
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*/ ]y@9z b
public class InsertSort implements SortUtil.Sort{ L{ ?& .iA
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/* (non-Javadoc) mfQQ<Q@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NQ !t `
*/ ;#I(ucB<
public void sort(int[] data) { -RVwPY
int temp; XgP7
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .6+j&{WNo!
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冒泡排序: ~;QO`I=0P
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package org.rut.util.algorithm.support; NZ/gp"D?
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import org.rut.util.algorithm.SortUtil; G$}\~dD
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/** n'v[[bmu
* @author treeroot fySzZ
* @since 2006-2-2 hf^,
* @version 1.0 Y[i>
*/ di>"\On-
public class BubbleSort implements SortUtil.Sort{ 2B3H-`
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/* (non-Javadoc) J "yO\Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >B U0B
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public void sort(int[] data) { s[NkPh9&
int temp; kjfZ*V=-
for(int i=0;i for(int j=data.length-1;j>i;j--){ HsGXb\
if(data[j] SortUtil.swap(data,j,j-1); #Z)e]4{!l
} m{x[q
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} Bab`wfUve
} WW\u}z.QJ
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} TDs=VTd@Z
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选择排序: !JzM<hyg3
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package org.rut.util.algorithm.support; n@XI$>B
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import org.rut.util.algorithm.SortUtil; H)}>&Z4
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/** rE;*MqYt&
* @author treeroot yhJH3<
* @since 2006-2-2 t*m04* }
* @version 1.0 CeSr~Ikg|
*/ ynvU$}w ~'
public class SelectionSort implements SortUtil.Sort { Hgu$)yhlj
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/* [^$nt
* (non-Javadoc) 5,})x]'x
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u\ro9l
*/ .LhIB?
public void sort(int[] data) { u)Y~+ [Q
int temp; O`Er*-O
for (int i = 0; i < data.length; i++) { :f
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int lowIndex = i; U<gMgA
for (int j = data.length - 1; j > i; j--) { #( F/P!qk
if (data[j] < data[lowIndex]) { JS<S?j?*/
lowIndex = j; <qT[
} ?1*Ka
} 0_q8t!<xJw
SortUtil.swap(data,i,lowIndex); y^zII5|s
} U>w#`Sy[
} ;{EIx*<d
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} O;z:?
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Shell排序: n^B9Mh@
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package org.rut.util.algorithm.support; C]414Ibi
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import org.rut.util.algorithm.SortUtil; Q)c3=.[>
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/** k#uSH
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* @author treeroot a?S5 =
* @since 2006-2-2 E-IV v
* @version 1.0 :+NZW9_
*/ nF>41 K
public class ShellSort implements SortUtil.Sort{ kH~ z07:
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/* (non-Javadoc) 6!zBLIYFI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )12.W=p
*/ vT~ey
public void sort(int[] data) { i)y8MlC{
for(int i=data.length/2;i>2;i/=2){ g xY6 M4
for(int j=0;j insertSort(data,j,i); 3}dTbr4y
} VK*Dm:G0
} waI?X2
insertSort(data,0,1); [p3{d\=*?
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/** ?lq
* @param data lC/1,Z/M
* @param j 3}aKok"k
* @param i ?+av9;Kg
*/ %jk7JDvl
private void insertSort(int[] data, int start, int inc) { ~hD!{([
int temp; r5 tn'
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); X)oxNxZ[A
} H3-(.l[!b)
} ^Ej$o@PH
} jq%%|J.x
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} <G|i!Pm
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快速排序: $inlI_
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package org.rut.util.algorithm.support; 5. ibH
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import org.rut.util.algorithm.SortUtil; XSk*w'xO
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/** =mR~\R(
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* @author treeroot z]_2lx2e
* @since 2006-2-2 L $L/5/
* @version 1.0 yPY}b_W
*/ `eZzYe(N
public class QuickSort implements SortUtil.Sort{ YTpiOPf
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/* (non-Javadoc) Vu.VH([b]Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &O
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*/ /tm2b<G
public void sort(int[] data) { n(I,pF
quickSort(data,0,data.length-1); $7h]A$$Fv
} 4Vtug>
private void quickSort(int[] data,int i,int j){ Q^\m@7O
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int pivotIndex=(i+j)/2; _%g L
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SortUtil.swap(data,pivotIndex,j); aVB/CoM9
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int k=partition(data,i-1,j,data[j]); I3gl+)Q
SortUtil.swap(data,k,j); hL4T7`
if((k-i)>1) quickSort(data,i,k-1); srPczVG*
if((j-k)>1) quickSort(data,k+1,j); U!d|5W.{Q
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} n%|og^\0
/** PRJ
* @param data %k%%3L,
* @param i umT *
* @param j 9|D*}OY>
* @return >|X )
*/ Q":,oZ2
private int partition(int[] data, int l, int r,int pivot) { D:] QBA)C
do{ FKZ'6KM&A
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); yPrF2@#XZ/
SortUtil.swap(data,l,r); Sq&r
;
} _'8P8T&
while(l SortUtil.swap(data,l,r); J':X$>E|
return l; E5aRTDLq
} K;z$~;F
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} Ez8k.]q u
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改进后的快速排序: c@3mfc{
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package org.rut.util.algorithm.support; {V,aCr
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import org.rut.util.algorithm.SortUtil; |\zzOfaO
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/** rJZR8bo
* @author treeroot (>
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* @since 2006-2-2 HQvJ*U4++
* @version 1.0 /KLkrW
*/ 7s0\`eXo/
public class ImprovedQuickSort implements SortUtil.Sort { =cpUc]~
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private static int MAX_STACK_SIZE=4096; q9:g
private static int THRESHOLD=10; +GJPj(S
/* (non-Javadoc) "1YwV~M5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >?Duz+W)
*/ 1:JwqbZKJ
public void sort(int[] data) { [#=IKsO'R6
int[] stack=new int[MAX_STACK_SIZE]; {J1iheuS}
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int top=-1; hkb&]XWi[
int pivot; 9tX+n{i
int pivotIndex,l,r; Zg$S% 1(Q
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stack[++top]=0; )I#{\^
stack[++top]=data.length-1; mC0_rN^Aj
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while(top>0){ #c!rx%8I
int j=stack[top--]; Lqdapx"Z_
int i=stack[top--]; }DQTy.d;P
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pivotIndex=(i+j)/2; U9ZuD40\
pivot=data[pivotIndex]; It7R}0Smg
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SortUtil.swap(data,pivotIndex,j); SRtw
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file://partition VKkvf"X
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do{ B0U(B\~Y
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Bn9#F#F<
SortUtil.swap(data,l,r); m]vS"AdX
} X% )~i[_DV
while(l SortUtil.swap(data,l,r); hq&|
SortUtil.swap(data,l,j); @DIEENiM
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if((l-i)>THRESHOLD){ Vm8@LA
stack[++top]=i; )X;051Q
stack[++top]=l-1; R#T
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}
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if((j-l)>THRESHOLD){ G^N@r:RS
stack[++top]=l+1; 4Q/{lqG
stack[++top]=j; OP<N!y ?[
} "u]&~$
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} ,]:Gn5~
file://new InsertSort().sort(data); ~`Rar2%B
insertSort(data); ?JG^GD7D
} D2g/P8.<A
/** d<+hQ\BF,
* @param data w
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*/ 8\"Gs z
private void insertSort(int[] data) { Y)DAR83
int temp; a2Nxpxho
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WW.@S5
} }toe'6
} y>.t[*zT
} ;DSH$'1i
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} Y0.'u{J*
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归并排序: 67hfv e
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package org.rut.util.algorithm.support; 0^R, d M
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import org.rut.util.algorithm.SortUtil; %YK xdp
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/** #bBh. ^
* @author treeroot ^GAJ9AF@(
* @since 2006-2-2 d&CpaOSu
* @version 1.0 &&m3E=K!^
*/ /!2`pv
public class MergeSort implements SortUtil.Sort{ H<[~V0=
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/* (non-Javadoc) $'I&u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D
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*/ /2zan}
public void sort(int[] data) { Pw| h`[h
int[] temp=new int[data.length]; =/_u k{
mergeSort(data,temp,0,data.length-1);
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} $,2T~1tE
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private void mergeSort(int[] data,int[] temp,int l,int r){ Yb-{+H8{J
int mid=(l+r)/2; zPND$3&'
if(l==r) return ; [nZIV
mergeSort(data,temp,l,mid); -&sY