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。 taGU
插入排序: |(moWY=
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package org.rut.util.algorithm.support; D|Iur W1f
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import org.rut.util.algorithm.SortUtil; }i{sg#
/** alh >"9~!
* @author treeroot `Y-|H;z
* @since 2006-2-2 $aHAv/&(5
* @version 1.0 I;5R2" 3
*/ 8[r9HC
public class InsertSort implements SortUtil.Sort{ )jWOP,|
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/* (non-Javadoc) >hBxY]< \
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1im^17X
*/ +_XmlX A3Z
public void sort(int[] data) { q~CA0AR
int temp; 8+]hpa,q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y;mj^/SxK
} #HS]NA|e@
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冒泡排序: 4Mk-2 Dx
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package org.rut.util.algorithm.support; s9dO,FMs0t
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import org.rut.util.algorithm.SortUtil; vvUSeG\n#j
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/** iAT)VQ&
* @author treeroot 8Ll[ fJZA
* @since 2006-2-2 LIg{J%
* @version 1.0 Dnc(l(
*/ 1n%?@+W
public class BubbleSort implements SortUtil.Sort{ .B#l5pfvP
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/* (non-Javadoc) %m:m}ziLQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zlR?,h-[3
*/ I^o!n5VM
public void sort(int[] data) { I`z@2Z+pJ
int temp; +T9:Udi
for(int i=0;i for(int j=data.length-1;j>i;j--){ BpX6aAx
if(data[j] SortUtil.swap(data,j,j-1); n| GaV
} TO%dw^{_`
} ^(viM?*
} M#|dIbns
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} GGhM;%H_99
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选择排序: olLfko4$*V
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package org.rut.util.algorithm.support; -v6M<
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import org.rut.util.algorithm.SortUtil; n$xQ[4eH)
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/** (98Nzgxgx}
* @author treeroot :eo
* @since 2006-2-2 CK,
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* @version 1.0 {'16:dTJ
*/ '!f5?O+E
public class SelectionSort implements SortUtil.Sort { R |KD&!~Z
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/* 5NJ4
* (non-Javadoc) hzk6rYg1
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r\nx=
*/ ie-vqLc
public void sort(int[] data) { npRSE v
int temp; r>GZ58i
for (int i = 0; i < data.length; i++) { #+$Q+Z|6k
int lowIndex = i; v&Kqq!DE
for (int j = data.length - 1; j > i; j--) { !mXxAo
if (data[j] < data[lowIndex]) { }w4QP+ x
lowIndex = j; r-,e;o>9
} gWY"w!f
} m7T)m0
SortUtil.swap(data,i,lowIndex); h*ZC*eV>
} #07g d#j4
} 3>
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Shell排序: m Z1)wH ,
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package org.rut.util.algorithm.support; u1xSp<59C
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import org.rut.util.algorithm.SortUtil; u.rY#cS,-R
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/** |p$spQ
* @author treeroot ePIiF_X
* @since 2006-2-2 _=|vgc
* @version 1.0 l7De6A"
*/ Fd*8N8Pi
public class ShellSort implements SortUtil.Sort{ :x_'i_w
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/* (non-Javadoc) v9T_&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v@# b}N0n
*/ 3]?#he
public void sort(int[] data) { HYmn:?H
for(int i=data.length/2;i>2;i/=2){ <V>dM4Mkr
for(int j=0;j insertSort(data,j,i); UwC=1g U
} _#vrb;.+
} Xy%p "b<
insertSort(data,0,1); imiR/V>N
} 7 I>G{
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/** sUPz/Z.h
* @param data @?"h
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* @param j KN-avu_Ix
* @param i ~)(\6^&=|
*/ vOg#Dqn-
private void insertSort(int[] data, int start, int inc) { ,]T2$?|
int temp; 'w1YFdW
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); E@Ad'_H
}
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} s=[h?kB
} ,!U=|c"k)
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快速排序:
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package org.rut.util.algorithm.support; fw[y+Bi&
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import org.rut.util.algorithm.SortUtil; =Fdg/X1
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/** }-
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* @author treeroot "*})3['n
* @since 2006-2-2 rb{P :MX
* @version 1.0 |hr]>P1
*/ E\C9|1)
public class QuickSort implements SortUtil.Sort{ K(q-?n`<
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/* (non-Javadoc) >$ 2V%};
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "le>_Ze_>|
*/ p0pWzwTG3
public void sort(int[] data) { @}kv-*
quickSort(data,0,data.length-1); xCtmXo
} -1J[n0O.
private void quickSort(int[] data,int i,int j){ + T8B:
int pivotIndex=(i+j)/2; uw2hMt (N
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SortUtil.swap(data,pivotIndex,j); }K3x
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int k=partition(data,i-1,j,data[j]); @/k@WhFZ
SortUtil.swap(data,k,j); 5ms""LD/
if((k-i)>1) quickSort(data,i,k-1); @Pt="*g
if((j-k)>1) quickSort(data,k+1,j); GH[wv<
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} H9CS*|q6r
/** B,{K*-7)MX
* @param data be +4junf
* @param i +a*tO@HG
* @param j \G-KplKS
* @return &~W:xg(jN
*/ zk( U8C+
private int partition(int[] data, int l, int r,int pivot) { 2,*M|+W~
do{ :^(>YAyHj^
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `hb%+-lj+
SortUtil.swap(data,l,r); D::rGB?.b
} G\(|N9^:
while(l SortUtil.swap(data,l,r); 8(* [Fe9
return l; +!|9hF'
} 50={%R
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} xt*u4%
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改进后的快速排序: {D=@n4JO
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package org.rut.util.algorithm.support; AnT3M.>ek
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import org.rut.util.algorithm.SortUtil; tPF.r
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/** /E\%>wv
* @author treeroot [KxF'm z9
* @since 2006-2-2 rEF0oJ.
* @version 1.0 7a~X:#
*/ SCz318n
public class ImprovedQuickSort implements SortUtil.Sort { %Z1N;g0
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private static int MAX_STACK_SIZE=4096; /bVoErf
private static int THRESHOLD=10;
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/* (non-Javadoc) 0L/n ?bf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9yfJVg
*/ q|),`.eh\
public void sort(int[] data) { Q@HopiC
int[] stack=new int[MAX_STACK_SIZE]; JeE;V![
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int top=-1; R47\Y
int pivot; 15sp|$&`
int pivotIndex,l,r; /~<@ *-'
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stack[++top]=0; q*9!,!e
stack[++top]=data.length-1; LSRk7'0
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while(top>0){ }B1!gz$YNO
int j=stack[top--]; ,l)^Ft`5
int i=stack[top--]; 1.6:#
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pivotIndex=(i+j)/2; (UxW;
pivot=data[pivotIndex]; _FWBUZ;N
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SortUtil.swap(data,pivotIndex,j);
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file://partition q?8|
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do{ 9_5ow
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |/)${*a4n
SortUtil.swap(data,l,r); :n-]>Q>5=k
} s']Bx=
while(l SortUtil.swap(data,l,r); $A-J,_:T<
SortUtil.swap(data,l,j); B]l)++~
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if((l-i)>THRESHOLD){ 5yz(>EVH
stack[++top]=i; _BP&n