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。 Yv<'QC
插入排序: r<VZEbm)
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package org.rut.util.algorithm.support; #hG0{_d7
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import org.rut.util.algorithm.SortUtil; h
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/** 7=i8$v&GX
* @author treeroot -AnQZy
* @since 2006-2-2 wNo2$>*
* @version 1.0 Q6blX6DWU
*/ (3cJ8o>&
public class InsertSort implements SortUtil.Sort{ hgIqr^N9
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/* (non-Javadoc) )3K# ${p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z/-9G
*/ mApn[)?tv
public void sort(int[] data) { R=&9M4
int temp; I@Cq<:+(3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :btb|^C
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冒泡排序: H<_BnT#
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package org.rut.util.algorithm.support; ` 9;0Y
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import org.rut.util.algorithm.SortUtil; A*+pGQ
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/** mJ+M|#Ox
* @author treeroot #1Zqq([@
* @since 2006-2-2 +cH,2 ^&
* @version 1.0 :j(e+A1@
*/ R[_Q}W'HG
public class BubbleSort implements SortUtil.Sort{ jfmHc(fX4
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/* (non-Javadoc) \Ui3=8(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (=A61]yB
*/ grD[7;1~:)
public void sort(int[] data) { ga?:k,xv
int temp; bn7"!6
for(int i=0;i for(int j=data.length-1;j>i;j--){ $Lj~ge3#
if(data[j] SortUtil.swap(data,j,j-1); ~6{iQZa1Y
} Fl0(n #L
} 9S'u1%
} -e_91WI
} Vn&{yCm3
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} f^JiaU4 [
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选择排序: F}1h
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package org.rut.util.algorithm.support; KA
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import org.rut.util.algorithm.SortUtil; Wd`*<+t]
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/** e
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* @author treeroot } 6 ,m2u
* @since 2006-2-2 n[S-bzU^t
* @version 1.0 LN z
*/ su$IXI#R-&
public class SelectionSort implements SortUtil.Sort { .7K)'
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/* :g%hT$,]3b
* (non-Javadoc) N5PW]
* -L-#-dK'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ky0}phGRu
*/ D\:dn
public void sort(int[] data) { P"(VRc6x
int temp; 45.<eWH$*(
for (int i = 0; i < data.length; i++) { !S.O~Kq
int lowIndex = i;
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for (int j = data.length - 1; j > i; j--) { 8H'ybfed
if (data[j] < data[lowIndex]) { O]4v\~@-j
lowIndex = j; SND@#?hiO
} @V?T'@W7D
} Vu`5/QDq
SortUtil.swap(data,i,lowIndex); e{EC#%x_
} kzE<Y
} ,?>{M
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} ]OSq}ul
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Shell排序: HVJqDF
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package org.rut.util.algorithm.support; {MRXKnm;e
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import org.rut.util.algorithm.SortUtil; s.X
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/** ')Q
* @author treeroot c@E;v<r'
* @since 2006-2-2 c;?J
* @version 1.0 v9\U2j
*/ 3F?7oMNIh
public class ShellSort implements SortUtil.Sort{ 0BwxPD#6bv
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/* (non-Javadoc) Y\,aJL$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ["O_Phb|
*/ nTtE+~u
public void sort(int[] data) { oE.Ckz~*d
for(int i=data.length/2;i>2;i/=2){ pG6?"*Fz;
for(int j=0;j insertSort(data,j,i); |oWl9j]Z
} >'lv Zt
} xfF;u9$;
insertSort(data,0,1); wBWqibY|
} pCf9"LLer
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/** m#$$xG
* @param data kwXUjnp
* @param j $>8O2p7W
* @param i >\!G43Q=
*/ Z2U6<4?1%
private void insertSort(int[] data, int start, int inc) { upLjkQ)_
int temp; "{S6iH)]8
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \#h{bnx
} X"jL
} s{Og3qUy
} /F$E)qN7n
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} pO/vD~C>
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快速排序: /-knqv
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package org.rut.util.algorithm.support; ih|;H:"^
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import org.rut.util.algorithm.SortUtil; P L7(0b%
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/** q@G}Hjn
* @author treeroot bv;.6C(T<
* @since 2006-2-2 m-qu<4A/U|
* @version 1.0 d8uDSy
*/ ]K3bDU~
public class QuickSort implements SortUtil.Sort{ qSDn 0^y
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/* (non-Javadoc) q;lR|NOh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~_hA{$
*/ 8(Q|[
public void sort(int[] data) { A^E 6)A=
quickSort(data,0,data.length-1); r#A*{4wz
} 0h~{K
private void quickSort(int[] data,int i,int j){ !{4'=+
int pivotIndex=(i+j)/2; i)] f0F
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SortUtil.swap(data,pivotIndex,j); *;(^)Sj4Q
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int k=partition(data,i-1,j,data[j]); =:Yrb2gP_\
SortUtil.swap(data,k,j); FWB
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if((k-i)>1) quickSort(data,i,k-1); 52 *ii
if((j-k)>1) quickSort(data,k+1,j); lUaJC'~p
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} l}iQ0v@
/** &"?99E>
* @param data =it @U/
* @param i l1#.rg
* @param j qqJghV$Oj
* @return NiFe#SLA
*/ h56Kmxxk
private int partition(int[] data, int l, int r,int pivot) { aZ|?i
}
do{ em95ccs'-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =W;e9 6#
SortUtil.swap(data,l,r); sq;!5qK
} S[gACEZ =
while(l SortUtil.swap(data,l,r); 3~Lsa"/
return l; J0
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} Vo6+| ztk|
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} oeZUd}P
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改进后的快速排序: q`'"+` h
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package org.rut.util.algorithm.support; 0Vrs bkS
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import org.rut.util.algorithm.SortUtil; {/(.Bpld
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/** 'Hzc"<2Y\
* @author treeroot $hHV Ie]+
* @since 2006-2-2 z(8G=C
* @version 1.0 piH0_7qr
*/ &]Uo>Gb3!q
public class ImprovedQuickSort implements SortUtil.Sort { MD*dq
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private static int MAX_STACK_SIZE=4096; ,2rfN"o
private static int THRESHOLD=10; h1"|$
/* (non-Javadoc) C=|8C70[%N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ok [_Z;
*/ yf;TIh%)=
public void sort(int[] data) { ]v0Z[l>yf
int[] stack=new int[MAX_STACK_SIZE]; _g
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int top=-1; S*>T%#F6Uo
int pivot; Kj "X!-
int pivotIndex,l,r; +zd/<
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stack[++top]=0; kMK0|+
stack[++top]=data.length-1; SB08-G2
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while(top>0){ 1<fW .Q)
int j=stack[top--]; P;@j
int i=stack[top--]; G@`ZDn
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pivotIndex=(i+j)/2; &PH:J*?C}
pivot=data[pivotIndex]; "OA{[)fw"
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SortUtil.swap(data,pivotIndex,j); 4;W{#jk
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file://partition Cl9rJ oT
l=i-1;
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r=j; ~ +>ehU
do{ (5E09K$
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?pfr^
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SortUtil.swap(data,l,r); Ue60Mf
} ;2\6U;
while(l SortUtil.swap(data,l,r); SE43C %hv
SortUtil.swap(data,l,j); fN&uat