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。 AOM@~qyc
插入排序: , Y^GQ`~#
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package org.rut.util.algorithm.support; `u"
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import org.rut.util.algorithm.SortUtil; gaU(ebsE
/** 2gJkpf9JN
* @author treeroot 534DAhpD=.
* @since 2006-2-2 Zvkb=
* @version 1.0 8,L)=3m-
*/ -5y=K40
public class InsertSort implements SortUtil.Sort{ <O3,b:vw
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/* (non-Javadoc) om{aws;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xM_+vN*(
*/ E*s8 nQ"
public void sort(int[] data) { r*g<A2g%
int temp; |$D`*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (/jZ&4T
} ,HwOMoP7
} .zo>,*:t
} tY- `$U@
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} $H"(]>~
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冒泡排序: 2h#_n'DV
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package org.rut.util.algorithm.support; H'?dsc
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import org.rut.util.algorithm.SortUtil; 7gQ2dp
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/** Gg3<
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* @author treeroot M,g$
* @since 2006-2-2 Id=g!L|
* @version 1.0 y\mK?eR
*/ w">-r}HnJ
public class BubbleSort implements SortUtil.Sort{ l{t!
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/* (non-Javadoc) F!cRx%R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]dL#k>$0q
*/ )26_7.|
public void sort(int[] data) { sh;>6xB
int temp; B8NMo5a
for(int i=0;i for(int j=data.length-1;j>i;j--){ wqAj=1M\
if(data[j] SortUtil.swap(data,j,j-1); -GT&46hX
} :\KJw
} i|CAN,'
} WoWmmZ
} sJ7ZE-v]h
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选择排序: Z?)=4|
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package org.rut.util.algorithm.support; 0l2@3}e
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import org.rut.util.algorithm.SortUtil; {J]x81}*;
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/** hi^t zpy
* @author treeroot ,L$,d
* @since 2006-2-2 -}9># <v
* @version 1.0 QN^AihsPi
*/ s'=w/os
public class SelectionSort implements SortUtil.Sort { 0tEe
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/* %>EM ^Z
* (non-Javadoc) 1hW"#>f7
* #?fKi$fS;L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yR[htD`
*/ Hg2Rcl
public void sort(int[] data) { _
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int temp; G }U'?p
for (int i = 0; i < data.length; i++) { A_2oQ*
int lowIndex = i; EJ=ud9
for (int j = data.length - 1; j > i; j--) { TcOmBKps'
if (data[j] < data[lowIndex]) {
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lowIndex = j; DgODTxiX
} eWWfUNBSLX
} w=QW8q?
SortUtil.swap(data,i,lowIndex); dQJ)0!B
} Ih^ziDcW
} cc{^0JT
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} :4/37R(~l8
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Shell排序: tPaNhm[-q7
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package org.rut.util.algorithm.support; ;%!]C0?
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import org.rut.util.algorithm.SortUtil; z~Is
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/** 4^_'LiX3[
* @author treeroot xL$7bw5fY
* @since 2006-2-2 "g:1br?X,9
* @version 1.0
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*/ #}S<O_
public class ShellSort implements SortUtil.Sort{ ]i
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/* (non-Javadoc) T&+y~c[au
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @@d6,=
*/ T,/:5L9
public void sort(int[] data) { 1h#e-Oyff
for(int i=data.length/2;i>2;i/=2){ odhcU5
for(int j=0;j insertSort(data,j,i); ,*CPG$L
} pB'{_{8aA
} /q5!p0fH*
insertSort(data,0,1); nR8r$2B+t
} J=6(
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/** _*fOn@Vwo
* @param data U# U*^#
* @param j W9:(P
* @param i )jGB[s";)y
*/ vbEO pYCS
private void insertSort(int[] data, int start, int inc) { 1.I58(0~+
int temp; w@x||K= Z
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); MJ<jF(_=
} M`p[ Zq
} \S0QZQbz/
} w7Ij=!)
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} T\w{&3ONm
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快速排序: P(aN6)D
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package org.rut.util.algorithm.support; @:t2mz:^i
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import org.rut.util.algorithm.SortUtil; %+@<T<>J<k
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/** s9,Z}]Th
* @author treeroot )6{,y{5!
* @since 2006-2-2 Axw+zO
* @version 1.0 4}NCdGD
*/ rA /T>ZM
public class QuickSort implements SortUtil.Sort{ YI?tmqzt
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/* (non-Javadoc) I ;F\'P)e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1!;4I@W(I)
*/ @#"6_{!j_X
public void sort(int[] data) { ;%Kh~
quickSort(data,0,data.length-1); *g"Xhk
} Bdm05}c@u
private void quickSort(int[] data,int i,int j){ a xz-H`oq4
int pivotIndex=(i+j)/2; <xUX&J=;
file://swap <3laNk
SortUtil.swap(data,pivotIndex,j); lX64IvG8+o
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int k=partition(data,i-1,j,data[j]); F#a'N c9
SortUtil.swap(data,k,j); ('+C $
if((k-i)>1) quickSort(data,i,k-1); Ge1"+:tbJ
if((j-k)>1) quickSort(data,k+1,j); PAXm
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} :kvQ3E0
/** .V@3zzv\
* @param data DDe`Lb%%
* @param i QBjvbWoIG(
* @param j ~:99
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* @return 7
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*/ }(!3)k7*
private int partition(int[] data, int l, int r,int pivot) { ?@QcKQ@
do{ \lF-]vz*
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); KebC$g@W
SortUtil.swap(data,l,r); as"@E>a
} J7wIA3.O
while(l SortUtil.swap(data,l,r); \hP.Q;"MtO
return l; p. KT=dZT
} 7GRPPh<4
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} iUlSRfrC$#
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改进后的快速排序: uP.dCs9-
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package org.rut.util.algorithm.support; P>'29$1'
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import org.rut.util.algorithm.SortUtil; ]xPy-j6C
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/** WQsu}_g5y
* @author treeroot Y?:"nhN
* @since 2006-2-2 jXIVR'n(
* @version 1.0 r |2{(+
*/ _% i!LyG
public class ImprovedQuickSort implements SortUtil.Sort { :(;ho.zz
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private static int MAX_STACK_SIZE=4096; _7
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private static int THRESHOLD=10; o_&Qb^W
/* (non-Javadoc) !*o{xq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s?PB ]Tr
*/ 8d(l)[GZt
public void sort(int[] data) { j|LO g
int[] stack=new int[MAX_STACK_SIZE]; "p[3^<~uQ
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int top=-1; XW:%YTv
int pivot; 1i;Cw/mr
int pivotIndex,l,r; UQjYWXvi
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stack[++top]=0; o0TB>DX$`
stack[++top]=data.length-1; [Xww`OUsh
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9L
while(top>0){ o90[,
int j=stack[top--]; Zi<(>@z2
int i=stack[top--]; ?=b#H6vs
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pivotIndex=(i+j)/2; d3NER} f4V
pivot=data[pivotIndex]; L$^)QxH7
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SortUtil.swap(data,pivotIndex,j); X39%O'
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file://partition =KHX_ib
l=i-1; : :928y
r=j; zKThM#.Wa
do{ /!U(/
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ps*iE=D
SortUtil.swap(data,l,r); n(_wt##wE~
} vd/ BO
while(l SortUtil.swap(data,l,r); gi+FL_8CzU
SortUtil.swap(data,l,j); d}wE4(]b
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if((l-i)>THRESHOLD){ eF?jNO3
stack[++top]=i; o1H6E1$=
stack[++top]=l-1; IiV]lxiE]
} Nx!7sE*b$1
if((j-l)>THRESHOLD){ a!.Y@o5Ku
stack[++top]=l+1; MRzY<MD
stack[++top]=j; *r ('A
} HcpAp]L)
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} y2nT)nL
file://new InsertSort().sort(data); :wfN+g=
insertSort(data); Mtn{63cK
} Ct$\!|aR
/** ;8cTy8
* @param data W+Ou%uv}S
*/ WA5.qw
private void insertSort(int[] data) { sHQO*[[
int temp; #;h>
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >^g\s]c[
} cDz^jC
} %0vWyU:K9
} +ijxv
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} 9Z DbZc
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归并排序: 3S
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package org.rut.util.algorithm.support; - x; xQ
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import org.rut.util.algorithm.SortUtil; :g{ybTSEe
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/** <VhD>4f{]
* @author treeroot #!P>.".
* @since 2006-2-2 (^58$IW71
* @version 1.0 Dn`
*/ [J55%N;#1
public class MergeSort implements SortUtil.Sort{ GQ sE5Vb
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/* (non-Javadoc) F:A Vik
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hRqr
*/ T&j:gg
public void sort(int[] data) { s0DT1s&
int[] temp=new int[data.length]; RQ4+EW1G
mergeSort(data,temp,0,data.length-1); $y%IM`/w
} Z_mQpt|y
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private void mergeSort(int[] data,int[] temp,int l,int r){ < Yc)F.:
int mid=(l+r)/2; r(rT.D&
if(l==r) return ; YUTI)&y
mergeSort(data,temp,l,mid); T/:6Z
mergeSort(data,temp,mid+1,r);
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for(int i=l;i<=r;i++){ ?U
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temp=data; eV"Uv3
} ]1MZ:]k
int i1=l; ((M>To_l
int i2=mid+1; MjK<n[.
for(int cur=l;cur<=r;cur++){ M^G9t*I
if(i1==mid+1) U|8?$/*\
data[cur]=temp[i2++]; \y+^r|IL
else if(i2>r) .vd*~U"
data[cur]=temp[i1++]; >O0<u
else if(temp[i1] data[cur]=temp[i1++]; )|W6Z
else PJ,G_+b!
data[cur]=temp[i2++]; y2 R\SL,
} +W8kMuM!
} )S}.QrG
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} ft~QVe!
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改进后的归并排序: u/xP$
"G Jhx/zt
package org.rut.util.algorithm.support; ?QtM|e
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import org.rut.util.algorithm.SortUtil; 7^1K4%IPl
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/** t{`uN
* @author treeroot |W*2L]&
* @since 2006-2-2 g[;&_gL
* @version 1.0 yM7FR);
*/ m8INgzVTC
public class ImprovedMergeSort implements SortUtil.Sort { w:](F^<s,
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private static final int THRESHOLD = 10; U
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/* \w-3Spk*
* (non-Javadoc) `%~f5<
* rddn"~lm1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h7S;
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*/ w9Nk8OsL
public void sort(int[] data) { hMgk+4*
int[] temp=new int[data.length]; ^;$9>yi1
mergeSort(data,temp,0,data.length-1); D'Uc?2X,&
} [q^pMH#U"
2#8PM-3"
private void mergeSort(int[] data, int[] temp, int l, int r) { (l/i#
int i, j, k; ~/Y8wxg
int mid = (l + r) / 2; 4$4Tx9C
if (l == r) Xd.y or
return; >b~Q%{1
if ((mid - l) >= THRESHOLD)
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mergeSort(data, temp, l, mid); w1
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else 8jiBLZkRf
insertSort(data, l, mid - l + 1); Djf~8q V!
if ((r - mid) > THRESHOLD) |1Nz8Vr.
mergeSort(data, temp, mid + 1, r); $U2Jq@G*
else #nKGU"$+
insertSort(data, mid + 1, r - mid); z;>O5a>z
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for (i = l; i <= mid; i++) { [3qJUJM
temp = data; ^plP1c:
} |r4&@)
for (j = 1; j <= r - mid; j++) { Ey_mK\'
temp[r - j + 1] = data[j + mid]; \;+b1
} YP{mzGdE&