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。 /IVw}:G
插入排序: j#%*@]>Tg
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package org.rut.util.algorithm.support; /= P!9d
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import org.rut.util.algorithm.SortUtil; De|@}@
/** $ i@5'[jA
* @author treeroot ^sH1YE}0
* @since 2006-2-2 ;D]TPBE
* @version 1.0 (J Fa
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public class InsertSort implements SortUtil.Sort{ {U=za1Ga
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/* (non-Javadoc) j^ZpBN L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jg
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*/ yB}y' 5
public void sort(int[] data) { X4i$,$C
int temp; -GP+e`d
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A"eT@
} +XWXHt
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冒泡排序: }W<]fK
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package org.rut.util.algorithm.support; &nPv%P,e
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import org.rut.util.algorithm.SortUtil; NLb/Bja
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/** R|!4Y`
* @author treeroot w_eu@R:u@
* @since 2006-2-2 CNcH)2Mk
* @version 1.0 zy@
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*/ & A9psc(,&
public class BubbleSort implements SortUtil.Sort{ _F^|n}Qbj
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/* (non-Javadoc) ?vf{v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7Yj\*N
*/ $Ry
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public void sort(int[] data) { y9\s[}c_
int temp; 1aYO:ZPy
for(int i=0;i for(int j=data.length-1;j>i;j--){ :'GTCo$3
if(data[j] SortUtil.swap(data,j,j-1); TdD-#|5
} !0Xes0gK0
} !9iVe7V
} *JO"8iLw
} XA9$n_|bw
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选择排序: s'\"%~nF<
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package org.rut.util.algorithm.support; [Z
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import org.rut.util.algorithm.SortUtil; O";r\Z
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/** $BH0W{S
* @author treeroot 0?,EteR
* @since 2006-2-2 .M:,pw"S]
* @version 1.0 *o"F.H{#N
*/ "
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public class SelectionSort implements SortUtil.Sort { _Zf1=&U#/
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AW> P\>{RE
*/ NV9= ~cx
public void sort(int[] data) { C
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int temp; ]iLfe&f
for (int i = 0; i < data.length; i++) { Iobo5B
int lowIndex = i; t4s}w$4
for (int j = data.length - 1; j > i; j--) { C?x
if (data[j] < data[lowIndex]) { (nda!^f_s
lowIndex = j; jIdhmd* $z
} ,PN>,hFL
} o'Tqqrr
SortUtil.swap(data,i,lowIndex); )J#@L*
} y
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Shell排序: $ a5K
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package org.rut.util.algorithm.support; H`@x5RjS
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import org.rut.util.algorithm.SortUtil; h r6f}2
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/** Ii|<:BW
* @author treeroot }P}l4k1W
* @since 2006-2-2 p3x(:=
* @version 1.0 ;y k@`<
*/ TR)'I
public class ShellSort implements SortUtil.Sort{ 1YnDho;~
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/* (non-Javadoc) C5sV-UMR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )SDGj;j+
*/ 8%nTDSp&t
public void sort(int[] data) { g>f(5
for(int i=data.length/2;i>2;i/=2){ ;utjW1y
for(int j=0;j insertSort(data,j,i); (\R"v^
} dd4yS}yBlR
} PS=crU@"H
insertSort(data,0,1); ,sLV6DM
} VJr?`
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/** yobi$mnsy!
* @param data U_I'Nz!^t
* @param j =
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* @param i L
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*/ ]i$CE|~
private void insertSort(int[] data, int start, int inc) { J::SFu=
int temp; q(uu;l[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); QT-rb~
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} T@Q.m.iV4
} $V\xN(Ed
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} , H[o.r=
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快速排序: bt
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package org.rut.util.algorithm.support; |`O7>(h
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import org.rut.util.algorithm.SortUtil; TS1k'<c?
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/** Z)?"pBv'
* @author treeroot AMO{?:8Y;
* @since 2006-2-2 TUk1h\.q
* @version 1.0 e@Mm4&f[p
*/ kF\QO
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public class QuickSort implements SortUtil.Sort{ %gf8'Q
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/* (non-Javadoc) C(gH}N4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,e,fOL
*/ LTa9'
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public void sort(int[] data) { 0q62 {p7
quickSort(data,0,data.length-1); +5T0]!
} 6xj&Qo
private void quickSort(int[] data,int i,int j){ 1[}VyP6 e
int pivotIndex=(i+j)/2; @7BH`b$)!
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SortUtil.swap(data,pivotIndex,j); f8uVk|a
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int k=partition(data,i-1,j,data[j]); 4QDF%#~q^
SortUtil.swap(data,k,j); dB1bf2'b#
if((k-i)>1) quickSort(data,i,k-1); S:R%%cy
if((j-k)>1) quickSort(data,k+1,j); m*a0V
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} *~-~kv4-
/** E&"bgwav{(
* @param data Z&}94
* @param i "dkvk7zCP
* @param j i-/'F
* @return I=lA7}
*/ *J%+zH
private int partition(int[] data, int l, int r,int pivot) { q&P"
do{ I/'jRM
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5B@&]-'~
SortUtil.swap(data,l,r); G-;pMFP(?
} s=KA(4p
while(l SortUtil.swap(data,l,r); fC81(5
return l; 4ci
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改进后的快速排序: W;hI[9
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package org.rut.util.algorithm.support; :KW
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import org.rut.util.algorithm.SortUtil; b)`<J @&{
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/** i*F^;-q)
* @author treeroot o{ U=
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* @since 2006-2-2 -lLq)
* @version 1.0 ="XxS|Mq3
*/ Q+#, VuM
public class ImprovedQuickSort implements SortUtil.Sort { *DU86JL`
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private static int MAX_STACK_SIZE=4096; G`TO[p]q
private static int THRESHOLD=10; 3lLO.
/* (non-Javadoc) ! WQEv_G@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /oh[Nu1D
*/ EpPKo
public void sort(int[] data) { M(5l Su
int[] stack=new int[MAX_STACK_SIZE]; =o9
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int top=-1; 1k;X*r#
int pivot; J/)Q{*`_
int pivotIndex,l,r; k2O==IG]6
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stack[++top]=0; QhN5t/Hr
stack[++top]=data.length-1; Knn$<!>
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