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。 P&b19 K'
插入排序: j{NNSi3
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package org.rut.util.algorithm.support; VY)9|JJCO
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import org.rut.util.algorithm.SortUtil; g_G6~-.9I
/** lWqrU1Sjl
* @author treeroot # g_Bx
* @since 2006-2-2 RB+N
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* @version 1.0 hWKJ,r%9;
*/ (y M^
public class InsertSort implements SortUtil.Sort{ BM(]QUxRd
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/* (non-Javadoc) +reor@h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ i:u1s"3~
public void sort(int[] data) { Rr!Y3)f;
int temp; 7^Ns&Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v{9t]s>B
} X`fn8~5
} vq!_^F<
} XK: 9r{r{
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冒泡排序: .N*Pl(<[
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package org.rut.util.algorithm.support; ({NAMc*
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import org.rut.util.algorithm.SortUtil; CYKr\DA
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/** ZKXo-~=>
* @author treeroot !>>f(t4
* @since 2006-2-2 .VkbYK
* @version 1.0 Dgx8\~(E'
*/ J]q%gcM
public class BubbleSort implements SortUtil.Sort{ 8,atX+tc
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/* (non-Javadoc) lRveHB&V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g7&9"
*/ E=cwq"
public void sort(int[] data) { ;s~X
int temp; hAm`NJMSO
for(int i=0;i for(int j=data.length-1;j>i;j--){ I8QjKI (
if(data[j] SortUtil.swap(data,j,j-1); l983vKr
} %/>Y/!;
} 9JWa$iBH@
} Rcawc
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} JXw^/Y$
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} #Jna6
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选择排序: uio@r^Xz
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package org.rut.util.algorithm.support; :Dd$i_3=
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import org.rut.util.algorithm.SortUtil; l27\diKPJ
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/** 6:]*c[7
* @author treeroot 06Gt&_Q
* @since 2006-2-2 JKX_q&bUw
* @version 1.0 w=}uwvn NX
*/ Nr0
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public class SelectionSort implements SortUtil.Sort { 9{$'S4
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/* 4<x'ocKlD
* (non-Javadoc) /'hC i]b@v
* \T;\XAGr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ru`U'
*/ 9W8]8sUeG
public void sort(int[] data) { %J8|zKT5t
int temp; @?[1_g_'P
for (int i = 0; i < data.length; i++) { $-&BB(-{E&
int lowIndex = i; rLU/W<F8
for (int j = data.length - 1; j > i; j--) { [y0O{,lI
if (data[j] < data[lowIndex]) { HBY.DCN[Z
lowIndex = j; 2 QNNp:`6
} i@][rdhT
} -kS~xVS|
SortUtil.swap(data,i,lowIndex); 9m-)Xdoy
} 8v71e>
} 93<:RV
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} {>"NyY
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Shell排序: ?X-)J=XG
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package org.rut.util.algorithm.support; .c#y%S
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import org.rut.util.algorithm.SortUtil; VqE~c
} %'bullT
/** k"N(o(
* @author treeroot ^T.E+2=>z
* @since 2006-2-2 o0ZM[0@j
* @version 1.0 Sggq3l$Qc
*/ qClHP)<
public class ShellSort implements SortUtil.Sort{ HK~xOAF
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/* (non-Javadoc) @
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z`6fotL
*/ L.T?}o
public void sort(int[] data) { Q`#4W3-,
for(int i=data.length/2;i>2;i/=2){ 2Sq_Tw3^
for(int j=0;j insertSort(data,j,i); jY6MjZI
} n9;;x%6 .I
} 9=,uq;
insertSort(data,0,1); zyg:nKQW
} m>}8'N)
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/** 'u4ezwF;
* @param data zd]D(qeX
* @param j TrdZJ21#M
* @param i {u[V{XIUh
*/ %Rh;=p`
private void insertSort(int[] data, int start, int inc) { -AYA~O(&
int temp; !WkIi^T
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1 ^g
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} E(Rh#+]Y5
} =&dW(uyzY
} 7DKz;o
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} lZ&]|*>
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快速排序: 0e[d=)XG
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package org.rut.util.algorithm.support; FA90`VOWYU
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import org.rut.util.algorithm.SortUtil; #&8}<8V
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/** B$?qQ|0:=
* @author treeroot XI Jlc~2
* @since 2006-2-2 /Jf~25F
* @version 1.0 ,&HR(jTo
*/ OOBhbpg!D
public class QuickSort implements SortUtil.Sort{ Zc"B0_&?:7
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/* (non-Javadoc) nH !3(X*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $ XBAZ<"hd
*/ }%TSGC4{
public void sort(int[] data) { OndhLLz
quickSort(data,0,data.length-1); `N/RHb%
} 6+K_ Z\
private void quickSort(int[] data,int i,int j){ ]=73-ywn]
int pivotIndex=(i+j)/2; d {2
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SortUtil.swap(data,pivotIndex,j); 6
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int k=partition(data,i-1,j,data[j]); 'z=:[#b
SortUtil.swap(data,k,j); W2-=U@
if((k-i)>1) quickSort(data,i,k-1); gLE7Edcp6V
if((j-k)>1) quickSort(data,k+1,j);
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} iP3Z
/** 02AI%OOH
* @param data :RxHw;!
* @param i s,*c@1f?
* @param j l]2r)!Q7
* @return 4y}"Hy
*/ (/" &
private int partition(int[] data, int l, int r,int pivot) { ?v}Bd!'+P
do{ '[ P}&<ie,
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); P
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SortUtil.swap(data,l,r); 3UUGblg`~
} L3(^{W]|
while(l SortUtil.swap(data,l,r); 1+y"i<3)
return l; Zt3}Z4d
} ?lCd{14Mkh
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} RAs0]K
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改进后的快速排序: FrTg4
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package org.rut.util.algorithm.support; bzmr"/#D3
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import org.rut.util.algorithm.SortUtil; R@T6U:1
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/** ;SKh
* @author treeroot s]B"qFA
* @since 2006-2-2 *j)M]
* @version 1.0 -dTLunv
*/ ET^ |z
public class ImprovedQuickSort implements SortUtil.Sort { _q>SE1j+W=
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private static int MAX_STACK_SIZE=4096; K%KZO`gO
private static int THRESHOLD=10; 10sK]XI
/* (non-Javadoc) }ZZ5].-a<D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (d2@Mz
*/ q$ghLGz
public void sort(int[] data) { ES:!Vx9t0|
int[] stack=new int[MAX_STACK_SIZE]; ;@4H5p
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int top=-1;
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int pivot; {6vEEU
int pivotIndex,l,r; |@VF.)_
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stack[++top]=0; \94j rr
stack[++top]=data.length-1; {M~lbU
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while(top>0){ 2C+(":=}
int j=stack[top--]; OjnJV
int i=stack[top--]; R 4EEelSZu
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pivotIndex=(i+j)/2; GaNq2 G
pivot=data[pivotIndex]; !DjT<dxf
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SortUtil.swap(data,pivotIndex,j); \x\.
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file://partition udqge?Tz
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do{ +QqH}=
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Zy]s`aa
SortUtil.swap(data,l,r); @]
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} Q2'eQ0W{o
while(l SortUtil.swap(data,l,r); M StX*Zw
SortUtil.swap(data,l,j); E)'8U
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if((l-i)>THRESHOLD){ M?:\9DDd
stack[++top]=i; <DiOWi
stack[++top]=l-1; XdIah<F2
} M23&<}Q8
if((j-l)>THRESHOLD){ nX
x=1*X
stack[++top]=l+1; iK}v`xq
stack[++top]=j; H*U`
} z&'f/w8
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} Z$2L~j"=!
file://new InsertSort().sort(data); ]if;A ) '
insertSort(data); {/UhUG
} P1d,8~;
/** %O) Z
* @param data Jh2Wr!5
*/ C-#.RI7
private void insertSort(int[] data) { U~QMR-bz
int temp; L{PH0Jf
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D9,!
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} &:vscOl
} dK# h<q1
} Y1r,2 k
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} swZpWC
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归并排序: 3X'WR]
eY3=|RR
package org.rut.util.algorithm.support; |!b9b(_j9
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import org.rut.util.algorithm.SortUtil; uX0
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/** Qp 69Sk@H{
* @author treeroot C={mi#G[/
* @since 2006-2-2 @.o@-3k
* @version 1.0 +u#Sl)F
*/ D=9}|b/
public class MergeSort implements SortUtil.Sort{ V_M@g;<o
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/* (non-Javadoc) 0^iJlR2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ki 3_N*z
*/ (w2(qT&