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。 "<x&pQZ%
插入排序: *> KHRR<N
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package org.rut.util.algorithm.support; Af9+HI
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import org.rut.util.algorithm.SortUtil; yb?{LL-uy
/** ]\BUoQ7I/
* @author treeroot a.DX%C/5
* @since 2006-2-2 (zC
* @version 1.0 .'/l'>
*/ MRs,l'
public class InsertSort implements SortUtil.Sort{ 6- ]h5L]
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/* (non-Javadoc) O3Uh+gKQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1ef'7a7e8
*/ UiIF6-ZZ!
public void sort(int[] data) { _f3
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int temp; (Y2mmd
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .T$D^?G!D
} 13a(FG
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冒泡排序:
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package org.rut.util.algorithm.support; JKy#j g:#
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import org.rut.util.algorithm.SortUtil; $KX[Zu%
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/** 7~b!4x|Z
* @author treeroot kaQ2A
* @since 2006-2-2 9tk" :ld
* @version 1.0 Pz@/|&]
*/ 8QF2^*RZ7z
public class BubbleSort implements SortUtil.Sort{ *QH[,F`I
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/* (non-Javadoc) (ua q<Cvg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rl?7W];
*/ s<&[\U
public void sort(int[] data) { TsHF
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int temp; EgNH8i
for(int i=0;i for(int j=data.length-1;j>i;j--){ VE]6wwV2
if(data[j] SortUtil.swap(data,j,j-1); TJOvyz`t
} O@jqdJu
} S;=_;&68?
} \zu}\{
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选择排序: ,w2WS\`%
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package org.rut.util.algorithm.support; [AR>?6G-
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import org.rut.util.algorithm.SortUtil; 1b3(
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/** 1h=D4yN
* @author treeroot z(H?VfJo
* @since 2006-2-2 q4ipumy*
* @version 1.0 l}}UFEA^
*/ *eUc.MX6x
public class SelectionSort implements SortUtil.Sort { ~Ltr.ci
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/* tZA:
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S&?7K-F>_o
*/ J`oTes,
public void sort(int[] data) { }U[-44r:
int temp; 9y^/GwUQ
for (int i = 0; i < data.length; i++) { 6E|S
int lowIndex = i; *)> do
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for (int j = data.length - 1; j > i; j--) { #$'FSy#
if (data[j] < data[lowIndex]) { Wx]d $_
lowIndex = j; |!LnAh
} d?hz LX
} ZL_[4Y
SortUtil.swap(data,i,lowIndex); 6y
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} (oaYF+T
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Shell排序: kX2d7yQZz
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package org.rut.util.algorithm.support; 6RK\}@^=K
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import org.rut.util.algorithm.SortUtil; :a3xvN-l
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/** 'MQ%)hipA
* @author treeroot -9o{vmB{
* @since 2006-2-2 G!Zyl^
* @version 1.0 v0@)t&O
*/ w sY}JT
public class ShellSort implements SortUtil.Sort{ [uR/M
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/* (non-Javadoc) (Uk,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n%$ &=-Fk
*/ [ee30ELn
public void sort(int[] data) { mX\
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for(int i=data.length/2;i>2;i/=2){ B9M>e'H%<
for(int j=0;j insertSort(data,j,i); Dp!zk}f|
} {gU&%j
} ;dQAV\
insertSort(data,0,1); #H5=a6E+q
} -]XP2}#d
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/** *H2]H@QHN
* @param data '*!L!VJ
* @param j IOEM[zhb$
* @param i ;/sHWI
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*/ Cs1>bpY*R6
private void insertSort(int[] data, int start, int inc) { =+oZtP-+o
int temp; ai^|N.!
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); S>f&6ZDNY(
} W`L!N&fB
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} %l$W*.j|;
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快速排序: BSzkW}3q9
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package org.rut.util.algorithm.support; {a"RXa
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import org.rut.util.algorithm.SortUtil; (|u31[
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/** (3%t+aqq
* @author treeroot u$\a3yi
* @since 2006-2-2 -:`V<
* @version 1.0 |~e?,[-2`r
*/ ]P1YHw9
public class QuickSort implements SortUtil.Sort{ `9 [i79U
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/* (non-Javadoc) t9u|iTY
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y0IK,W'&?
*/ $[(d X!]F
public void sort(int[] data) { ?L|yaC~
quickSort(data,0,data.length-1); .j?kEN?w
} #n7Yr,|Z
private void quickSort(int[] data,int i,int j){ QK <\kVZ8
int pivotIndex=(i+j)/2; x "\qf'{D
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SortUtil.swap(data,pivotIndex,j); I>n
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int k=partition(data,i-1,j,data[j]); eOY^$#Y
SortUtil.swap(data,k,j); BD*G1k_q
if((k-i)>1) quickSort(data,i,k-1); $>w/Cy
if((j-k)>1) quickSort(data,k+1,j); !j^&gRH
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} {o|k.zy
/** f/ahwz
* @param data "J19*<~
* @param i , =y#m-9
* @param j :uK
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* @return CL9yEy"V
*/ r"]'`qP,
private int partition(int[] data, int l, int r,int pivot) { 0k[2jh
do{ @d&H]5
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); r9@AT(
SortUtil.swap(data,l,r); E*CcV;
} ]U_ec*a
while(l SortUtil.swap(data,l,r); ^T079=$5
return l; <z0WLw0'z
} q7Es$zjX
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} 4JMiyiW&
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改进后的快速排序: yyP-=Lhmo=
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package org.rut.util.algorithm.support; };katqzEg
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import org.rut.util.algorithm.SortUtil; ;y1Q6eN
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/** p2 ! FcFi
* @author treeroot wAF,H8 -DK
* @since 2006-2-2 jRQ+2@n{E
* @version 1.0 mTf<
*/ 9M-K]0S(
public class ImprovedQuickSort implements SortUtil.Sort { QLo(i
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private static int MAX_STACK_SIZE=4096; 5Ec/(-F
private static int THRESHOLD=10; 0(\+-<
/* (non-Javadoc) }[!92WS/ee
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T|) {<
*/ 6X_\Ve
public void sort(int[] data) { PHra+NY#A
int[] stack=new int[MAX_STACK_SIZE]; j]5WK_~M
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int top=-1; EX
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int pivot; Vfs$VY2.
int pivotIndex,l,r; !:0v{ZQ
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stack[++top]=0; 7@;">`zvm
stack[++top]=data.length-1; ^mPPyT ,(
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while(top>0){ 8]"(!i_;)
int j=stack[top--]; ^&