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。 S(U9Dlyarg
插入排序: *iY:R
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package org.rut.util.algorithm.support; 8ki3>"!A
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import org.rut.util.algorithm.SortUtil; ES!e/l
/** .I EHjy\+
* @author treeroot 5!S#}=f=
* @since 2006-2-2 vE8BB$D
* @version 1.0 PNd'21N
*/ 6]Q#4
public class InsertSort implements SortUtil.Sort{ +."|Y3a
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/* (non-Javadoc) A`JE(cIz3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N
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*/ ?<BI)[B
public void sort(int[] data) { LLT6*up$
int temp; ?%su?L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lyFlJm i,r
} jUKMDlH
} ^&C/,,U
} p-_9I7?
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} 8m=R"
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冒泡排序: }aVzr}!
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package org.rut.util.algorithm.support; E:M,nSc)53
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import org.rut.util.algorithm.SortUtil; /*>}y$
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/** t:V._@
* @author treeroot 0G-obHe0
* @since 2006-2-2 9G2rVk
* @version 1.0 tY]?2u%)
*/ Q0Do B
public class BubbleSort implements SortUtil.Sort{ ^`iz%^
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/* (non-Javadoc) 5@r6'Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u-y?i`
*/ ,SNrcwv
public void sort(int[] data) { Ipq0
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int temp; )`{m |\b
for(int i=0;i for(int j=data.length-1;j>i;j--){ xM!9$v
if(data[j] SortUtil.swap(data,j,j-1); !4D?X\~"%
} _b/zBFa%
} Jn d_cJ ]a
} .tGz, z}
} gED|2%BXb
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} ilVi
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选择排序: 0&fO)de96
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package org.rut.util.algorithm.support; )D#} /3s
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import org.rut.util.algorithm.SortUtil; fNu/> pN
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/** 1$Q[%9
* @author treeroot %i/|}K
* @since 2006-2-2 Q:Pp'[ RK
* @version 1.0 F(."nUrf
*/ $z*"@
public class SelectionSort implements SortUtil.Sort { axt;}8
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/* jUNt4
* (non-Javadoc) ](Wa:U}Xs
* 2]9
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |n tWMm:(
*/ ^7? WR?!
public void sort(int[] data) { _V1:'T8
int temp; GRYw_}Aa
for (int i = 0; i < data.length; i++) { w{dRf!b69
int lowIndex = i; M&hNkJK*G
for (int j = data.length - 1; j > i; j--) { 'R'hRMD9o
if (data[j] < data[lowIndex]) { d7G@Z|R3p
lowIndex = j; #k)z5vZ$h
} P2f^]z
} UCmy$aW
SortUtil.swap(data,i,lowIndex); -Z:x!M[Xr
} QN$s%&O
} <'$>&^!^
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} !*~QB4\2b
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Shell排序: XC~"T6F
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package org.rut.util.algorithm.support; o$;&q
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import org.rut.util.algorithm.SortUtil; W/,:-R&'>
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/** b(R.&X
* @author treeroot ko[d axUB
* @since 2006-2-2 ,q#SAZ/N
* @version 1.0 !',%kvJI
*/ b/m.VL
public class ShellSort implements SortUtil.Sort{ `5h^!="
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/* (non-Javadoc) R\&z3<-S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6pS}\aD
*/ sCY
public void sort(int[] data) { #o}/'
for(int i=data.length/2;i>2;i/=2){ WvJ:yUb2
for(int j=0;j insertSort(data,j,i); b:~#;$g
} .'H$|"(v
} :;hg :Q:
insertSort(data,0,1); [sk n9$
} ({C[RsY=6
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/** [kN_b<Pc,
* @param data 8'zl\:@N
* @param j O/Hj-u6&A
* @param i NkNFx<9T
*/ ulW>8bW&
private void insertSort(int[] data, int start, int inc) { Hc>yZ:c;
int temp; |:#Ug
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); GXD<X_[
} sUc[!S:/
} R\7r!38
} 1,OkuyXy!>
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} .),9qz`
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快速排序: .5s58Hcg,
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package org.rut.util.algorithm.support; pL[3,.@WA
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import org.rut.util.algorithm.SortUtil; *My9r.F5o
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/** yFmy
* @author treeroot 4OJD_
* @since 2006-2-2 J!~kqNI
* @version 1.0 `^^t#sT
*/ 2(~Zl\
public class QuickSort implements SortUtil.Sort{ ..nVViZ
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/* (non-Javadoc) '-N5F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H?Sv6W.~
*/ ^W@8KB
public void sort(int[] data) { ;P ju O
quickSort(data,0,data.length-1); -eh .Tk
} WFk%nO/
private void quickSort(int[] data,int i,int j){ 2!W[ff@~7
int pivotIndex=(i+j)/2; :tnW ivrwR
file://swap k\SqDmv
SortUtil.swap(data,pivotIndex,j); UNiK6h_%
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int k=partition(data,i-1,j,data[j]); ZQKo ]Kdr
SortUtil.swap(data,k,j); JM/\n4ea:
if((k-i)>1) quickSort(data,i,k-1); &0bq3JGW
if((j-k)>1) quickSort(data,k+1,j); "HqmS
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} ,\&r\!=
/** z3L=K9)
* @param data =ca[*0^Z7
* @param i y O@1#
* @param j m6K7D([f
* @return 2NjgLXP
*/ a]5y
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private int partition(int[] data, int l, int r,int pivot) { rf]z5;
do{ SYsO>`/ )
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WH39=)D%u
SortUtil.swap(data,l,r); i
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} E`qX|n
while(l SortUtil.swap(data,l,r); gSwHPm%zn
return l; (91ts$jH
} .nVY" C&
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} lo6upirZX
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改进后的快速排序: DQ/rx`BG
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package org.rut.util.algorithm.support; 8Ara^Xh}q
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import org.rut.util.algorithm.SortUtil; }m^^6h
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/** QbSLSMoL
* @author treeroot acUyz2x
* @since 2006-2-2 "m6G;cv
* @version 1.0 mDv<d =p!
*/ @f|~$$k=
public class ImprovedQuickSort implements SortUtil.Sort { c C) <Y#1
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private static int MAX_STACK_SIZE=4096; 9yTDuhJ6
private static int THRESHOLD=10; Ho*B<#&(A|
/* (non-Javadoc) -Q<OSa='
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -!5l4
*/ MxX)&327
public void sort(int[] data) { kiyKL:6D|
int[] stack=new int[MAX_STACK_SIZE]; #Q["[}flVv
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int top=-1; OIw[sum2
int pivot; bw/mF5AsW
int pivotIndex,l,r; qHyOaKMd
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stack[++top]=0; gn.)_
stack[++top]=data.length-1; 9$9aBW
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while(top>0){ ~(tt.l#
int j=stack[top--]; Uy|!f]"?
int i=stack[top--]; $'d,X@}8
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pivotIndex=(i+j)/2;
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pivot=data[pivotIndex]; Hl(W'>*oL
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SortUtil.swap(data,pivotIndex,j); 1/ j>|
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file://partition 3"my!}03
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r=j; wi.E$RckD
do{ jjEu
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); dG~U3\!
SortUtil.swap(data,l,r); _PC<Td>nm
} $}S0LZ_H
while(l SortUtil.swap(data,l,r); Yg&/^
SortUtil.swap(data,l,j); 2{l|<'
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if((l-i)>THRESHOLD){ :iE`=( o
stack[++top]=i; T 8]*bw
stack[++top]=l-1; kt_O=
} \Jc}Hzug
if((j-l)>THRESHOLD){ nI(w7qhub
stack[++top]=l+1; "^{Hta
stack[++top]=j; >Q"3dw
} wfu`(4
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} g%^/^<ei
file://new InsertSort().sort(data); _*sd#
insertSort(data); ,SdxIhL
} *'M+oi
/** v&9:Wd*Iz'
* @param data W:w SM*
*/ k+i0@G'C(
private void insertSort(int[] data) { m8b-\^eP7
int temp; &jg>X+;
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n++ak\
} Unt]=S3u
} fo>_*6i74
} @J^
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} 9Ou}8a?m"
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归并排序: N;}X$b5Y @
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package org.rut.util.algorithm.support; '@.Lg0`
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import org.rut.util.algorithm.SortUtil; ;.$vDin6
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/** \oGU6h<
* @author treeroot Iv9U4
* @since 2006-2-2 9-1'jNV
* @version 1.0 *h5L1Eq
*/ ;8e}X6YU
public class MergeSort implements SortUtil.Sort{ %g>k0~TRf#
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/* (non-Javadoc) UF89gG4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `8\"3S
*/ tv`c"Pb
public void sort(int[] data) { z([HGq5
int[] temp=new int[data.length]; ,*x/L?.Z!
mergeSort(data,temp,0,data.length-1); LKZ<\%
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} %|R]nB
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private void mergeSort(int[] data,int[] temp,int l,int r){ r@'~cF]m
int mid=(l+r)/2; 0f3>s>`M
if(l==r) return ; w9gfva$&
mergeSort(data,temp,l,mid); H#nJWe_9A
mergeSort(data,temp,mid+1,r); &!'R'{/?X
for(int i=l;i<=r;i++){ y6G6wk;
temp=data; O_
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} [z;}^ 3b
int i1=l; m*7RC4"J
int i2=mid+1; 23bTCp.d
for(int cur=l;cur<=r;cur++){ A~0yMww:$
if(i1==mid+1) hS%oQ)zvE
data[cur]=temp[i2++]; lPA}06hU
else if(i2>r) Ts=TaRwWf
data[cur]=temp[i1++]; \qG` ts
else if(temp[i1] data[cur]=temp[i1++]; {Rxb_9
else rJ6N'vw>
data[cur]=temp[i2++]; (X2[}K
} XA69t2J~F
} Ne1W!0YLK
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} Wn2J]BH
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改进后的归并排序: =6fJUy^M\
H:z<]Rc
package org.rut.util.algorithm.support; UhU+vy6)/
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import org.rut.util.algorithm.SortUtil; t|UM2h
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/**
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* @author treeroot K[9P{0hA
* @since 2006-2-2 {e[~1]j3
* @version 1.0 o> 1+m
*/ [8WG
public class ImprovedMergeSort implements SortUtil.Sort { ?xQm_
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private static final int THRESHOLD = 10; 4a.8n!sys
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/* Oo>Uu{{
* (non-Javadoc) Jep/%cT$w
* f/,8sGkX;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qyY/:&E, Z
*/ n2'XWbMaL
public void sort(int[] data) { criNeKa
int[] temp=new int[data.length]; kp)1s>c
mergeSort(data,temp,0,data.length-1); [4PiQyr
} q((%sWp
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private void mergeSort(int[] data, int[] temp, int l, int r) { ZNDjk
int i, j, k; T{'oR .g,
int mid = (l + r) / 2; z<cPy)F]"
if (l == r) "1Y DT-I"
return; s|:j~>53
if ((mid - l) >= THRESHOLD) h4~VzCR4x\
mergeSort(data, temp, l, mid); Vg"v C
else +KP&D.wIo
insertSort(data, l, mid - l + 1); Y)AHM0;g
if ((r - mid) > THRESHOLD) HJe6h. P
mergeSort(data, temp, mid + 1, r); +\cG{n*
else }ol<DV
insertSort(data, mid + 1, r - mid); BGO
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Z =*h9,MY
for (i = l; i <= mid; i++) { =cx_3gCr{
temp = data; lO1]P&@
} -x>2Wb~%
for (j = 1; j <= r - mid; j++) { lt0byn$vz
temp[r - j + 1] = data[j + mid]; LdX'V]ITh
} d}^hZ8k|
int a = temp[l]; nc#} \
int b = temp[r]; M&rbXi.
for (i = l, j = r, k = l; k <= r; k++) { lBG"COu
if (a < b) { CG!9{&F
data[k] = temp[i++]; gJOD+~
a = temp; 9*[!ux7h
} else { |7miT!y8
data[k] = temp[j--]; 4tp}
b = temp[j]; )u=a+T
} /jn0Xh
} [Lid%2O3ZR
} 9_%??@^>
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/** ]_! .xx>
* @param data wJWofFz
* @param l Xc
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* @param i M{XBmDfN
*/ Qf@ha
private void insertSort(int[] data, int start, int len) { gt(!I^LHYc
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )JR&
} =$<