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。 *KF-q?PBb
插入排序: 7<W7pXDp
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package org.rut.util.algorithm.support; xngK_n
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import org.rut.util.algorithm.SortUtil; ?:bW@x
/** F\1{b N|3
* @author treeroot '%&i#Eb
* @since 2006-2-2 q4)8]Y2
* @version 1.0 V#!ftu#c?
*/ R:7j`gHJ|9
public class InsertSort implements SortUtil.Sort{ %T3L-{s5
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/* (non-Javadoc) ") Xy%C`J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '5V2{k$4U
*/ qq0bIfF\4
public void sort(int[] data) { XP
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int temp; c hE~UQ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B2UQO4[w
} pgg4<j_mn
} _h#SP+>
} 5f&+(Wqw
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} :cv_G;?
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冒泡排序: IaDc hI
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package org.rut.util.algorithm.support; !|P>%bi
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import org.rut.util.algorithm.SortUtil; _9!_fIY
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/** m7z6c"?lB
* @author treeroot g0-hN%=6
* @since 2006-2-2 _1w?nN'
* @version 1.0 <<>?`7N
*/ Q>y2C8rnJ/
public class BubbleSort implements SortUtil.Sort{ 9;3f`DK@2k
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/* (non-Javadoc) :(A5,$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S?.2V@Ic
*/ ZRYs7 4<
public void sort(int[] data) { uVJ;1H!
int temp; $Bd{Y"P@6
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]kC/b^~+m
if(data[j] SortUtil.swap(data,j,j-1); ^hOnLy2
} j'lfH6_')e
} PfTjC"`,
} D0(QZrVa
} a%Ky;ys
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} =
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选择排序: |ToCRM
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; (Sc]dH
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/** JCNZtWF
* @author treeroot "i$Avm
* @since 2006-2-2 Yv!%Is
* @version 1.0 +.UdEIR";M
*/ BwO^F^Pr?k
public class SelectionSort implements SortUtil.Sort { f`@$saFD
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/* XYD}OddO
* (non-Javadoc) )]Xj"V2
* V6'"J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y=JfV
*/ (hTe53d<S?
public void sort(int[] data) { o$I% 1
int temp; +,=DUsI}
for (int i = 0; i < data.length; i++) { <_&H<]t%rI
int lowIndex = i; >
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for (int j = data.length - 1; j > i; j--) { l ,0]iVJ
if (data[j] < data[lowIndex]) { pv%UsbY
lowIndex = j; F Vkb9(WW
} IDbqhZp(
} Y*iYr2?;
SortUtil.swap(data,i,lowIndex); \gferWm
} TqK`X#Zq
} w|?<;+
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} R.Xh&@f`
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Shell排序: dwOB)B@{H
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package org.rut.util.algorithm.support; ;RNU`Ip
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import org.rut.util.algorithm.SortUtil; d*ch.((-
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/** >x0"gh
* @author treeroot - 7)%J+5
* @since 2006-2-2 'r6s5 WC
* @version 1.0 j!9p#JK#u
*/ ia!t~~f
public class ShellSort implements SortUtil.Sort{ n2\;`9zm
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/* (non-Javadoc) t-gg,ttnA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p
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*/ 1wpT"5B
public void sort(int[] data) { ML?%s`
for(int i=data.length/2;i>2;i/=2){ ?qwTOi
for(int j=0;j insertSort(data,j,i); cA_77#<8
} mZsftby}
} {Lu-!}\NP
insertSort(data,0,1); >$h *1/
} :JW!$?s8H
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/** ! 9B| `
* @param data D. !m*oq
* @param j 9dl\`zlA*
* @param i WT$m*I
*/ ZaQgSE>Y
private void insertSort(int[] data, int start, int inc) { `HXP*Bp#
int temp; [*ylC,w
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); jO\29(_
} =pQA!u]QE
} *x3";%o
} CYA#:
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} kylR)
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快速排序: D@"g0SW4
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package org.rut.util.algorithm.support; )2T 1g~8
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import org.rut.util.algorithm.SortUtil; =)}m4,LA
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/** y\ L$8BSL
* @author treeroot Srw ciF
* @since 2006-2-2 N=hr%{}c
* @version 1.0 4/;
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*/ '
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public class QuickSort implements SortUtil.Sort{ #@xSR:m
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/* (non-Javadoc) 2*:lFvwP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WJvD,VMz
*/ jT/SZ|S
public void sort(int[] data) { V XEA.Mko
quickSort(data,0,data.length-1); JEq0 {_7
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private void quickSort(int[] data,int i,int j){ ~7aBli=
int pivotIndex=(i+j)/2; /rp.H'hC
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SortUtil.swap(data,pivotIndex,j); '^pA%I2D
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int k=partition(data,i-1,j,data[j]); .`4N#EjP
SortUtil.swap(data,k,j); _%#Q
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if((k-i)>1) quickSort(data,i,k-1); WbZ{)
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if((j-k)>1) quickSort(data,k+1,j); -kY7~yS7
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} WS6pm6@A*!
/** n|`L>@aw,
* @param data K$_ Rno"
* @param i lk8g2H
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* @param j g`~c|bx
* @return lN94 b3_W
*/ BEM_y:#
private int partition(int[] data, int l, int r,int pivot) { ct='Z E
do{ j3 d=O!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (5[|h
SortUtil.swap(data,l,r); fF!Mmm"
} AD$k`Cj
while(l SortUtil.swap(data,l,r); R:SFj!W1
return l; "5Oi[w&F5
} A-gNfXP,D
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} ;EstUs3
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改进后的快速排序: ZM"J5}h
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package org.rut.util.algorithm.support; >xu}eWSz
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import org.rut.util.algorithm.SortUtil; 0JTDJZOz@#
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/** <]I[|4J 7
* @author treeroot -Si'[5@
* @since 2006-2-2 UKyOkuY:w
* @version 1.0 rQT@:$)
*/ Hb5^+.xur
public class ImprovedQuickSort implements SortUtil.Sort { V#jFjObTN
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private static int MAX_STACK_SIZE=4096; |aef$f5
private static int THRESHOLD=10; rqk1 F~j|
/* (non-Javadoc) R o :/J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CpHF3o`Z6
*/ H?tonG.^(
public void sort(int[] data) { Kd}cf0
int[] stack=new int[MAX_STACK_SIZE]; J \U}U'qP
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int top=-1; <(x[Qp/5P
int pivot; sl^i%xJ|l'
int pivotIndex,l,r; ~5$V8yfx h
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stack[++top]=0; .Q
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stack[++top]=data.length-1; VyK]:n<5Q
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while(top>0){ 7m0sF<P{g
int j=stack[top--]; YGrmco?G
int i=stack[top--]; +
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pivotIndex=(i+j)/2; H
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pivot=data[pivotIndex]; Gy0zh|me
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SortUtil.swap(data,pivotIndex,j); q:N"mp<%
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do{ A,-UW+:
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ZY-UQ4_|u
SortUtil.swap(data,l,r); X8l[B{|
} {IEc{y7?gO
while(l SortUtil.swap(data,l,r); NN1d?cOn
SortUtil.swap(data,l,j); l1}=>V1
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if((l-i)>THRESHOLD){ 68 d\s4
stack[++top]=i; cA%70Y:AV
stack[++top]=l-1; "R@N}q<*v2
} #W[/N|~wx
if((j-l)>THRESHOLD){ cE[B
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stack[++top]=l+1; 3~H_UGw
stack[++top]=j; G]5m@;~l5
} 88~BE ^
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} HV'xDy[)
file://new InsertSort().sort(data); $I&DAG