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。 (Gsg+c
插入排序: IMEoov-x
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package org.rut.util.algorithm.support; ;:1mv
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import org.rut.util.algorithm.SortUtil; '*.};t~;"d
/** : P2;9+v
* @author treeroot ~qxc!k!w4
* @since 2006-2-2 t":>O0>cz
* @version 1.0 +}'K6x_
*/ %"B$I>h
public class InsertSort implements SortUtil.Sort{ ^el:)$
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/* (non-Javadoc) :/Zh[Q@EG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NE nP3A
*/ x&p=vUuukP
public void sort(int[] data) { w-/Tb~#E
int temp; -OAH6U9^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {$.{VE+v5
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冒泡排序: ]kvE+m&p}^
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package org.rut.util.algorithm.support; vsR&1hs
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import org.rut.util.algorithm.SortUtil; }=)"uv
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/** OMNdvrE*=O
* @author treeroot o!&*4>tF
* @since 2006-2-2 )A"7l7?.n)
* @version 1.0 :W55JD'
*/ dD!SgK [Jv
public class BubbleSort implements SortUtil.Sort{ N9Vcp~;
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/* (non-Javadoc) b*7i&q'H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1uE[ %M
*/ _l<"Qqt
public void sort(int[] data) { ~a Rq\fx{
int temp; W3kilhZ
for(int i=0;i for(int j=data.length-1;j>i;j--){ =#Jb9=zdR
if(data[j] SortUtil.swap(data,j,j-1); ?Ci\3)u,P
} m-]"I8[
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} Z
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选择排序: FUqiP(A
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package org.rut.util.algorithm.support; 7va%-&.&t
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import org.rut.util.algorithm.SortUtil; a1&^P1.
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/** 7[PXZT
* @author treeroot rL/+`H
* @since 2006-2-2 eX/$[SL[
* @version 1.0 UgJHSl
*/ ~Hf,MLMdTf
public class SelectionSort implements SortUtil.Sort { |ipppE=
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/* BH1To&ol
* (non-Javadoc) )sr]}S0
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :A[/;|&
*/ H#:Yw|t
public void sort(int[] data) { c1f6RCu$b
int temp; '_%Jw:4k
for (int i = 0; i < data.length; i++) { 1Ppzch7
int lowIndex = i; K`sm
for (int j = data.length - 1; j > i; j--) { ' =kX
if (data[j] < data[lowIndex]) { :0l(Ll KD
lowIndex = j; ))vwofkw4
} l%O-c}X
} 3`y:W9!u
SortUtil.swap(data,i,lowIndex); A{k@V!A%
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} 6)8']f
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Shell排序: 8MdKH7
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package org.rut.util.algorithm.support; >X]<s^
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import org.rut.util.algorithm.SortUtil; , /pE*Yk
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/** gDrqs>8
* @author treeroot Lv"83$^S9
* @since 2006-2-2 W~qo
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* @version 1.0 uE2Yn`Ha
*/ ME(!xI//JZ
public class ShellSort implements SortUtil.Sort{ fHiCuF
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/* (non-Javadoc) T
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E_z@\z MB
*/ Zo`^pQS
public void sort(int[] data) { )xeVoAg
for(int i=data.length/2;i>2;i/=2){ 7hc(]8eP
for(int j=0;j insertSort(data,j,i); BBDOjhik
} hf'3yEm
} n\ZFPXP
insertSort(data,0,1); )c*~Y=f
} z t1Q_;
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/** 6 B
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* @param data ]PFc8qv{
* @param j fAK
* @param i +1Uw <~
*/ !(]|!F[m
private void insertSort(int[] data, int start, int inc) { $t]DxMd
int temp; _ n>0!
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); sTb/l!=o
} ^ZsME,
} 1_'ZbZv4h
}
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快速排序: +$9w[ARN+
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package org.rut.util.algorithm.support; Av'H(qB\K
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import org.rut.util.algorithm.SortUtil; I|.B-$gH
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/** $?GF]BT
* @author treeroot zUh(b=,
* @since 2006-2-2 D -jew &B
* @version 1.0 ,UP6.C14
*/ R'{V&H^Z
public class QuickSort implements SortUtil.Sort{ UY==1\
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/* (non-Javadoc) ZE :oK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Deam%)bXM]
*/ b~|B(lL6Xm
public void sort(int[] data) { {kC]x2 U
quickSort(data,0,data.length-1); j>6{PDaT
} H;^6%HV1
private void quickSort(int[] data,int i,int j){ mr*zl*
int pivotIndex=(i+j)/2; \+,jM6l}-
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SortUtil.swap(data,pivotIndex,j); n4:WM+f4
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int k=partition(data,i-1,j,data[j]); %VdJ<=@
SortUtil.swap(data,k,j); d+bTRnL
if((k-i)>1) quickSort(data,i,k-1); ZK;HW
if((j-k)>1) quickSort(data,k+1,j); XhS<GF%
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} 8z+ CYeV
/** F2u{Wzr_@
* @param data !:>y.^O
* @param i kqyY:J
* @param j Jlzhn#5c-
* @return }/=VnCfU
*/ NZl0sX.:
private int partition(int[] data, int l, int r,int pivot) { ur'A ;B
do{ GUK/Xiu
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); qvT9d7x
SortUtil.swap(data,l,r); cgU7)`0j
} Gf"/fpeQx
while(l SortUtil.swap(data,l,r); ''V:+@Toh
return l; rsP1?Hxq
} zRz3ot,|
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} q
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改进后的快速排序: 7==Uoy*O
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package org.rut.util.algorithm.support; eX=W+&lj
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import org.rut.util.algorithm.SortUtil; Q%85,L^ U
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/** I|p(8R!
* @author treeroot 6VA@ ;g0$
* @since 2006-2-2 ^rx]Y;
* @version 1.0 <AB]FBo(
*/ k:c)|2
public class ImprovedQuickSort implements SortUtil.Sort { $FD0MrB_+
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private static int MAX_STACK_SIZE=4096; m:'fk;khN
private static int THRESHOLD=10; zW\&q!`IRP
/* (non-Javadoc) 3.8d"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c(@)V.o2
*/ Fd3V5h
public void sort(int[] data) { 7^ER?@:W
int[] stack=new int[MAX_STACK_SIZE]; "6.kZ$`%
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int top=-1; GUMO;rZs
int pivot; Zj$U_
int pivotIndex,l,r; C EAwQH
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stack[++top]=0; CY9`ztO*
stack[++top]=data.length-1; aQcJjF5x
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while(top>0){ mI}1si=$
int j=stack[top--]; y_QK _R<