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。 sJoi fl
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插入排序: 3\+p1f4
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package org.rut.util.algorithm.support; pG
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import org.rut.util.algorithm.SortUtil; pCc7T-"og
/** [QbXj0en$
* @author treeroot 3(+#^aw
* @since 2006-2-2 MPbPq3an
* @version 1.0 BA-nxR
*/ qJU)d
public class InsertSort implements SortUtil.Sort{ *]WXM.R8
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/* (non-Javadoc) 0@lC5-=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W_\L_)^X
*/ AJfi,rFPg
public void sort(int[] data) { ATM:As:<@
int temp; ':D&c
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lmKq xs4
} HFuaoS+b*
} WV1 Z
} !`[I>:Ex
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} %8CT -mQ
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冒泡排序: M#]|$\v(
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package org.rut.util.algorithm.support; m}[~A@qD
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import org.rut.util.algorithm.SortUtil; A;-z#R#V5
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/** QYfAf3te
* @author treeroot lzs(i2pA
* @since 2006-2-2 qzt2j\v
* @version 1.0 >xV<nLf/
*/ P!+nZXo
public class BubbleSort implements SortUtil.Sort{ -*hb^MvP
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/* (non-Javadoc) j22#Bw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Dl9<EZ
*/ 207 O["Y
public void sort(int[] data) { 7s8<FyFsjd
int temp; _lPl)8k
for(int i=0;i for(int j=data.length-1;j>i;j--){ qIGu#zX W
if(data[j] SortUtil.swap(data,j,j-1); 2Cd
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} LlA`QLe
} vN,}aV2nq
} q"+ q
} Stw+Dm\!
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} <a+eF}*2
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选择排序: @ojg`!,
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package org.rut.util.algorithm.support; YR|(;B
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import org.rut.util.algorithm.SortUtil; lv00sa2z
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/** y4/>Ol]
* @author treeroot V+=*2?1
* @since 2006-2-2 DO1 JPeIi
* @version 1.0 7"n)/;la
*/ )&Kn(l)
public class SelectionSort implements SortUtil.Sort { g]Xzio&w
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/* m0I #
* (non-Javadoc) h/1nm U]
* a(}VA|l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GP{$v:RG
*/ vJTfo#C|
public void sort(int[] data) { 6bbZ<E5At
int temp; `R=a@DQ
for (int i = 0; i < data.length; i++) { iHE0N6%q
int lowIndex = i;
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for (int j = data.length - 1; j > i; j--) { mJ8{lXq3!
if (data[j] < data[lowIndex]) { :]B%
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lowIndex = j; aCU7w5
} r/CEYEJ&X
} >/TB_ykb
SortUtil.swap(data,i,lowIndex); "pSH!0Ap\
} HA^jk%53
} ="3a%\
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} , @%C8Z
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Shell排序: n!0${QVnS
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package org.rut.util.algorithm.support; n0rerI[R
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import org.rut.util.algorithm.SortUtil; GB&Nt{
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/** +M44XhT
* @author treeroot gCv"9j<j
* @since 2006-2-2 r?64!VS;
* @version 1.0 0s860Kn
*/ <A#5v\{.;~
public class ShellSort implements SortUtil.Sort{ KqN!?anPr
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/* (non-Javadoc) L7SEswMti
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kx|me~I
*/ +VSZhg,Np8
public void sort(int[] data) { S3R|8?|
for(int i=data.length/2;i>2;i/=2){ @4;HC=~
for(int j=0;j insertSort(data,j,i); !+m@AQ:,
} 98BYtxa
} CfQf7-
insertSort(data,0,1); W;^N8ap%
} CXBzX:T?#
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/** E::L?#V
* @param data q#;BhPc
* @param j 2bWUa~%B
* @param i .FuA;:@%\
*/ S2ark,sp6
private void insertSort(int[] data, int start, int inc) { /v5qyR7an
int temp; *yrnK3
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8GY.){d!l
} l$M$o(
}
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} qB+n6y%
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} 9x(}F<L
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快速排序: ?gLAWz
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package org.rut.util.algorithm.support; N?$7Z v[G
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import org.rut.util.algorithm.SortUtil; IK3qE!,&U
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/** zHV|-R
* @author treeroot 2\5cjdy
* @since 2006-2-2 y5_XHi@u~o
* @version 1.0 0vDg8i\
*/ l2(.>-#
public class QuickSort implements SortUtil.Sort{ )i0 $j)R
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/* (non-Javadoc) /tP7uVL
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QhCY}Q?X
*/ Mm.Ql
public void sort(int[] data) { EX4
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quickSort(data,0,data.length-1); b_vVB`>
} GQ<Ds{exs>
private void quickSort(int[] data,int i,int j){ WO@H*
int pivotIndex=(i+j)/2; ?gN9kd)
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SortUtil.swap(data,pivotIndex,j); { V0>iN:~S
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int k=partition(data,i-1,j,data[j]); E+z18Lf?
SortUtil.swap(data,k,j); <raG07{!*
if((k-i)>1) quickSort(data,i,k-1); sQtf,e|p
if((j-k)>1) quickSort(data,k+1,j); \B&6TeR
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} uB;_vC
/** d&u7]<yDA
* @param data T(V8;!
* @param i `NSy"6{Z
* @param j 87<9V.s2
* @return uY;R8CiD
*/ qg4fR' i
private int partition(int[] data, int l, int r,int pivot) { f05=Mc&)
do{ &K
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); % $TEDr!
SortUtil.swap(data,l,r); E/mw* c^
} j o_
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while(l SortUtil.swap(data,l,r); 9afh[3qm
return l; DjwQ`MA
} ]'k[u
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} x2k*|=$
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改进后的快速排序: @Tr&`Hi
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package org.rut.util.algorithm.support; :}9j^}"c3
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import org.rut.util.algorithm.SortUtil; w^{!U
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/** M&y5AB0
* @author treeroot cJ/]+|PQ
* @since 2006-2-2 +O+<Go@a
* @version 1.0 ((|IS[
*/ !;dSC<
public class ImprovedQuickSort implements SortUtil.Sort { DZs^ 2Zc
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private static int MAX_STACK_SIZE=4096; z(H?VfJo
private static int THRESHOLD=10; |pW\Ec#(
/* (non-Javadoc) 9?EVQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m xJXL":|
*/ yC
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public void sort(int[] data) { S&?7K-F>_o
int[] stack=new int[MAX_STACK_SIZE]; </s,pe79B
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int top=-1; Sj-[%D*
int pivot; ai;\@$ cq
int pivotIndex,l,r; q*8lnk
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stack[++top]=0; 3KcaT5(&
stack[++top]=data.length-1; ^od<JD4
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while(top>0){ ;7rv
int j=stack[top--]; o\6iq
int i=stack[top--]; KAc >-c<
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pivotIndex=(i+j)/2; C_->u4-
pivot=data[pivotIndex]; [uR/M
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SortUtil.swap(data,pivotIndex,j); HI!4
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file://partition SUE
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l=i-1; &erm`Ho
r=j; g`?:=G:a*
do{ ?+`xe{k
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tcL2J .
SortUtil.swap(data,l,r); `fS^
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} *<