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。 VNcxST15a
插入排序: AD=vYDR+
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package org.rut.util.algorithm.support; OIMsxXF\J
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import org.rut.util.algorithm.SortUtil; bZ$;`F5})
/** dyz)22{\!`
* @author treeroot %9!,PeRe
* @since 2006-2-2 R"9^FQ13
* @version 1.0 {m)$ b
*/ 5HZ t5="+
public class InsertSort implements SortUtil.Sort{ .MzVc42<
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/* (non-Javadoc) \Y0o~JD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [%alnY
*/ '51 8S"T @
public void sort(int[] data) { axSJ:j8
int temp; M[^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ueyz@{On~
} +;P8QZK6
} 75+#)hNa!P
} KTm^0:V[Oy
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} -r6cK,WVU
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冒泡排序: NT6OGBl&
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package org.rut.util.algorithm.support; "+g9}g
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import org.rut.util.algorithm.SortUtil; O#,Uz2
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/** %8_bh8g-
* @author treeroot qW1d;pt
* @since 2006-2-2 pu:Ie#xTDf
* @version 1.0 jo8hVWJ7V*
*/ <,r|*pkhp~
public class BubbleSort implements SortUtil.Sort{ %MQU&H9[
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/* (non-Javadoc) 7S_rN!E1i*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sO,%Ok1
*/ >VQP,J{
public void sort(int[] data) { Kyz!YB
int temp; #E?T E
for(int i=0;i for(int j=data.length-1;j>i;j--){ e'FBV[e
if(data[j] SortUtil.swap(data,j,j-1); 6QwVgEnSf
} =q1=.VTn
} OR &'
} G,#]`W@qhK
} <QlpIgr
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} llCBqWn
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选择排序: eF[CiO8F2
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package org.rut.util.algorithm.support; TSGJ2u5ie%
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import org.rut.util.algorithm.SortUtil; uANG_sX^n
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/** 6zmt^U
* @author treeroot .^aakM
* @since 2006-2-2 MM}lW-q;
* @version 1.0 *&f^R}O
*/ t<)Cbple\
public class SelectionSort implements SortUtil.Sort { L\cd=&b`
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/* s$cr|p;7#
* (non-Javadoc) 'MM%Sm,
* #DBg8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,g.*Mx`-
*/ xJphG
public void sort(int[] data) { O%g
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int temp; a'T8U1
for (int i = 0; i < data.length; i++) { |[)k5nUQ|
int lowIndex = i; 7#~v<M6
for (int j = data.length - 1; j > i; j--) { 0rt@4"~~w
if (data[j] < data[lowIndex]) { 7$;#-l
lowIndex = j; y$
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} k<.$7Pl3U
} S}O>@%
SortUtil.swap(data,i,lowIndex); tx,_0[hZi
} 9j0Hvo% T
} Zj+S"`P
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} ;Av=/hU
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Shell排序: `-R-O@X|
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package org.rut.util.algorithm.support; <Km
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import org.rut.util.algorithm.SortUtil; DjyqQyq~
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/** :U6"HP+?g-
* @author treeroot -0QoVGw
* @since 2006-2-2 b^*9m PP
* @version 1.0 #?OJ9pyG'
*/ *oby(D"p
public class ShellSort implements SortUtil.Sort{ prHM}n{0
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/* (non-Javadoc) m4 k:uk7N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0N|l1Sn
*/ LD=e Mk:
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public void sort(int[] data) { 5NR@<FE
for(int i=data.length/2;i>2;i/=2){ H[S}&l\D4
for(int j=0;j insertSort(data,j,i); ,QeJ;U
} -> ^Ex`
} _Gu;= H,~&
insertSort(data,0,1); w4nU86oZYl
} w)rd--9f
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/** ]<3n;*8k?
* @param data HzMr
* @param j 9{GEq@`7
* @param i |erG cKk
*/ yTxrbE
private void insertSort(int[] data, int start, int inc) { Vk tc
int temp; )+ V)]dS@%
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); o=nF .y
} (#c|San
} &G|^{!p/G
} x5(6U>-Y
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} 0h=}BCb+i
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快速排序: t] CA!i`
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package org.rut.util.algorithm.support; /E39Z*
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import org.rut.util.algorithm.SortUtil; th1;Ym+Ze
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/** ,M.phRJ-`
* @author treeroot lR>p
* @since 2006-2-2 EKD?j
* @version 1.0 Ob&m&2s,
*/ KB"N',kG
public class QuickSort implements SortUtil.Sort{ 9Q.@RO$%C
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/* (non-Javadoc) ;/h&40&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &RHZ7T
*/ '8yC wk
public void sort(int[] data) { _UA|0a!-
quickSort(data,0,data.length-1); 4
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} i91 =h
private void quickSort(int[] data,int i,int j){ ~m'8<B5+
int pivotIndex=(i+j)/2; h+ms%tNT
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SortUtil.swap(data,pivotIndex,j); H%b c.c
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int k=partition(data,i-1,j,data[j]); ;u-[%(00S
SortUtil.swap(data,k,j); 2<T/N
if((k-i)>1) quickSort(data,i,k-1); (e_z*o)\T
if((j-k)>1) quickSort(data,k+1,j); [v+5|twxpU
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} ]$,3vYBf
/** `h'7X(
* @param data ~>#?.f
* @param i {pc (b
* @param j x[y}{T
* @return #De a$
*/ 9/`3=r@
private int partition(int[] data, int l, int r,int pivot) { |vw],r6
do{ ``-pjD(t
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \ iA'^69
SortUtil.swap(data,l,r); jL7r1pu5
} D#D55X^6*
while(l SortUtil.swap(data,l,r); #P1U]@
return l; MtVvi6T
} /^L<q
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} jqj4(J@%yr
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改进后的快速排序: rb*0YCi
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package org.rut.util.algorithm.support; jLA)Y
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import org.rut.util.algorithm.SortUtil; 6M
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/** `TYC]9
* @author treeroot 1bFGoLAEFl
* @since 2006-2-2 ?iZM.$![
* @version 1.0 |)C
#
*/ H_JE)a:+
public class ImprovedQuickSort implements SortUtil.Sort { gBO,
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private static int MAX_STACK_SIZE=4096; &ty-aB=F
private static int THRESHOLD=10; &Hyy .a
/* (non-Javadoc) qj/Zk[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dkx}}E:<
*/ BCuoFw)
public void sort(int[] data) { W'~s
int[] stack=new int[MAX_STACK_SIZE]; sYfm]Faz
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int top=-1; VJP #
int pivot; dC;&X
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int pivotIndex,l,r; ts%
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stack[++top]=0; m] yUcj{F
stack[++top]=data.length-1; .^2.h
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while(top>0){ *kpP)\P
int j=stack[top--]; XDAP[V
int i=stack[top--]; tDavp:M1v
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pivotIndex=(i+j)/2; m[%':^vSr
pivot=data[pivotIndex]; ?6\N&MTF
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SortUtil.swap(data,pivotIndex,j); ?lfyC/
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file://partition pN)x,<M)
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do{ k~Q
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); '7}2}KD
SortUtil.swap(data,l,r); q7rb3d
} Td|u-9OM
while(l SortUtil.swap(data,l,r); Rc3!u^?u
SortUtil.swap(data,l,j); 4x}U+1B
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if((l-i)>THRESHOLD){ 8AuE:=?,,
stack[++top]=i; MGq\\hLD\-
stack[++top]=l-1; ]R>NmjAI
} _BY+Tfol
if((j-l)>THRESHOLD){
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stack[++top]=l+1; z]SEPYq:
stack[++top]=j; *>"NUHq
} %6%mf>Guf
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} $)$r
file://new InsertSort().sort(data); ^pH8'^n
insertSort(data); /qJC p![X
} oc]:Ty
/** ul~6zBKO
* @param data =|``d-
*/ d=meh4Y
private void insertSort(int[] data) { %[5GG d5w
int temp; ke!
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S~ Z<-@S
} )/vom6y*
} !h4A7KBYG
} ,Jh#$mil
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} 7y3WV95Z\
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归并排序: BgD3P.;[
pW@W-k:u
package org.rut.util.algorithm.support; -.y1]4
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import org.rut.util.algorithm.SortUtil; /g.c(-#]
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/** vK@UK"m
* @author treeroot P9qIq]M
* @since 2006-2-2 W7'<Jom|?
* @version 1.0 ']>9/r#
*/ +p63J
public class MergeSort implements SortUtil.Sort{ XVqkw@Ia4!
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/* (non-Javadoc) _k26(rdI@-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .D ^~!A
*/ =R'O5J
public void sort(int[] data) { n42\ty9
int[] temp=new int[data.length]; _tX=xAO9
mergeSort(data,temp,0,data.length-1); Y2XxfZj
} ~-6_-Y|
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private void mergeSort(int[] data,int[] temp,int l,int r){ ?T_MP"
int mid=(l+r)/2; g)^s+Y
if(l==r) return ; De^:9<{jc
mergeSort(data,temp,l,mid); [520!JhZY
mergeSort(data,temp,mid+1,r); \eNB L[
for(int i=l;i<=r;i++){ M;Pry3J
temp=data; lq "X_M$
} -z+,j(@
int i1=l; +B1&bOb
int i2=mid+1; d4BzFGsW
for(int cur=l;cur<=r;cur++){ %Z <{CV
if(i1==mid+1) Q&vdBO/
data[cur]=temp[i2++]; ~G@YA8}
else if(i2>r) ha$1vi}b
data[cur]=temp[i1++]; 6 5dMv*{
else if(temp[i1] data[cur]=temp[i1++]; d,^ZH
else RZV6;=/
data[cur]=temp[i2++]; *E/ Mf
} ~WTk X(\
} 8ta@@h
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} {icTfPR4E
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改进后的归并排序: ,>rvl P
mi<Q3;m
package org.rut.util.algorithm.support; X*@ tp,t
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import org.rut.util.algorithm.SortUtil; 6
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/** 64mEZ_kG,
* @author treeroot eGq7+
* @since 2006-2-2 6QY;t:/<
* @version 1.0 P9'`
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*/ PIa!NPy
public class ImprovedMergeSort implements SortUtil.Sort { ;10YG6:
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private static final int THRESHOLD = 10; O 1z0dHa
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/* 0=3)`v{S@
* (non-Javadoc) X>=`l)ZR
* p__wBUB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ceE]^X;p
*/ c?HUW
public void sort(int[] data) { M)+p H
int[] temp=new int[data.length]; ^_|kEvk0
mergeSort(data,temp,0,data.length-1); y`buY+5l
} ]/1\.<uJId
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private void mergeSort(int[] data, int[] temp, int l, int r) { Dho6N]86r
int i, j, k; 3._
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int mid = (l + r) / 2; 6 Ln~b <I
if (l == r) T9Q3I
return; o=($'(1
if ((mid - l) >= THRESHOLD) hA5')te<