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。 05+uBwH
插入排序: HKr6h?Si^
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package org.rut.util.algorithm.support; >#MGGCGL
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import org.rut.util.algorithm.SortUtil; `B^HW8
/** /y\KLa
* @author treeroot u/D=&"tL
* @since 2006-2-2 zqq$PaH*
* @version 1.0 x{B%TM-Ey
*/ u.}z}'-
public class InsertSort implements SortUtil.Sort{ bB^SD] }C
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/* (non-Javadoc) 9tnW:Nw~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TV>UD
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*/ F?LTWm
public void sort(int[] data) { 7@.UkBOx
int temp; Mb I';Mq
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e/?>6'6 5
} Ef;OrE""
} P2nb&lVdu
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冒泡排序: F:8cd^d~u
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package org.rut.util.algorithm.support; HDyus5g
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import org.rut.util.algorithm.SortUtil; &b 2Vt
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/** o0>z6Ya<
* @author treeroot -Kj^ l3w
* @since 2006-2-2 \advFKN
* @version 1.0 i0($@6Lh
*/ O)'Bx=S4Ke
public class BubbleSort implements SortUtil.Sort{ r@3VN~
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/* (non-Javadoc) uvK1gJrA)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "8Ud&o
*/ A| #9
public void sort(int[] data) { fPs'A
int temp; sskwJu1
for(int i=0;i for(int j=data.length-1;j>i;j--){ {XMF26C#
if(data[j] SortUtil.swap(data,j,j-1); 4VjP:>*p
} 2$^n@<uZ@
} a _YE[6
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} ]q0mo1-EZ!
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选择排序: QvK-3w;=
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package org.rut.util.algorithm.support; x8Rmap@L.
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import org.rut.util.algorithm.SortUtil; @,D 3$P8}
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/** ~3Y)o|D3
* @author treeroot vu[+UF\G
* @since 2006-2-2 Lrgv:n
* @version 1.0 ?Gc9^bB I
*/ >-YPCW
public class SelectionSort implements SortUtil.Sort { vgSs]g
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/* ~ y%8uHL:
* (non-Javadoc) 0FfBD[E:
* *ktM<N58
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q1sK:)Hu+
*/ L+7j4:$B8
public void sort(int[] data) { 5|!x0H;
int temp; s5T$>+
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for (int i = 0; i < data.length; i++) { tuuc9H4B
int lowIndex = i; 5
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for (int j = data.length - 1; j > i; j--) { je1f\N45
if (data[j] < data[lowIndex]) { & IVwm"
lowIndex = j; c#M'Mye
} 8;YeEW5
} Be+CV">2
SortUtil.swap(data,i,lowIndex); rr fL[
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} GUJ[2/V~A
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Shell排序: 8 munw
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package org.rut.util.algorithm.support; 5inmFT?9Z
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import org.rut.util.algorithm.SortUtil; ,Ju f
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/** Mp*")N,
* @author treeroot t6&6kl
* @since 2006-2-2 `An`"$z
* @version 1.0 ri&B%AAc
*/ ]Ln2|$R
public class ShellSort implements SortUtil.Sort{ L6yRN>5aE
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/* (non-Javadoc) )tGeQXVhbJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Qvbc}KP8
*/ >=-w2&
public void sort(int[] data) { hW[/{2<@
for(int i=data.length/2;i>2;i/=2){ WUx}+3eWv
for(int j=0;j insertSort(data,j,i); ?ihkV?;)
} ZKTOif}
} j(mbUB*
insertSort(data,0,1); preKg$U
} S(Md
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/** b[,J-/;JNL
* @param data 44 ,:@
* @param j UR6.zE4=_
* @param i k"F5'Od
*/ 62K7afH
private void insertSort(int[] data, int start, int inc) { -o*IJQ_
int temp; o5KpiibFM
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }z6@Z#%q
} &1Dq3%$c
} ;$Q`JN=
} pMM,ox"
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} nsFOtOdd
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快速排序: )$K )`uqb
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package org.rut.util.algorithm.support; (&R/ns~
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import org.rut.util.algorithm.SortUtil; (@*[^@ipV
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/** c'n EbelE
* @author treeroot FWI<_KZO
* @since 2006-2-2 }}y$T(:l
* @version 1.0 _4F(WC co
*/ @qk$
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public class QuickSort implements SortUtil.Sort{ ?t++IEoP
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/* (non-Javadoc) [:<CgU9C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I$!rNfrs
*/ h`n,:Y^++P
public void sort(int[] data) { :U_k*9z}=
quickSort(data,0,data.length-1); 9r.Os
} _7r<RZ
private void quickSort(int[] data,int i,int j){ 0o~? ]C
int pivotIndex=(i+j)/2; FrBoE#
file://swap %suSZw`
SortUtil.swap(data,pivotIndex,j); U@21N3_@_
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int k=partition(data,i-1,j,data[j]); 4ti\;55{W
SortUtil.swap(data,k,j); !$N^Ak5#
if((k-i)>1) quickSort(data,i,k-1); A\p'\@f
if((j-k)>1) quickSort(data,k+1,j); CY~]lQ
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} tY~gn|M
/** _b8&$\>
* @param data ZXV_Dc
* @param i
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* @param j yh0zW
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* @return q5C(/@)^
*/ eV:I :::
private int partition(int[] data, int l, int r,int pivot) { %(lr.9.]H
do{ &Omo\Oq&W>
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6;s.%W
SortUtil.swap(data,l,r); ;f,`T
} {Q9?Q?
while(l SortUtil.swap(data,l,r); K|JpkEw
return l; -]yM<dP
} {*utke]}*
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} v2=Iqo
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改进后的快速排序: |@'/F #T
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package org.rut.util.algorithm.support; 2I'gT$h
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import org.rut.util.algorithm.SortUtil; "#zSk=52z
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/** 4lrF{S8
* @author treeroot 38ac~1HjE
* @since 2006-2-2 +/xmxh$ $
* @version 1.0 r{NCI
*/ sBUK v(U)
public class ImprovedQuickSort implements SortUtil.Sort { 9*s''=
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private static int MAX_STACK_SIZE=4096; TCShS}q;%
private static int THRESHOLD=10; ."`mh&+`
/* (non-Javadoc) Pw c)u&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ivTx6-]
*/ w:[1,rRvT
public void sort(int[] data) { RRSkXDU}
int[] stack=new int[MAX_STACK_SIZE]; %[3?vX
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int top=-1; DX3xWdnr
int pivot;
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int pivotIndex,l,r; GJTKqr|1O
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stack[++top]=0; Buxn!s
stack[++top]=data.length-1; {7EnM1]
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while(top>0){ {T;A50
int j=stack[top--]; 3K)12x$.K
int i=stack[top--]; sd(Yr6~..
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pivotIndex=(i+j)/2; (i3V[H
pivot=data[pivotIndex]; pTzwyj!SD
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SortUtil.swap(data,pivotIndex,j); A=N &(k
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file://partition #:q$sKQ_$
l=i-1; 0cGO*G2Xr
r=j; RC[mpR;2
do{ /R/\>'{E&c
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); FCr^D$_w
SortUtil.swap(data,l,r); dWR-}>
} _1>Xk_
while(l SortUtil.swap(data,l,r); *8I+D>x
SortUtil.swap(data,l,j); DHI%R<
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if((l-i)>THRESHOLD){ !
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stack[++top]=i; ejFGeR
stack[++top]=l-1; Q4H(JD1f)
} s(2/]f$
if((j-l)>THRESHOLD){ $Gy&
stack[++top]=l+1; ~]w|ULNa3|
stack[++top]=j; -(oFO'Lbg
} m2{DLw".
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} c6 f=r
file://new InsertSort().sort(data); T"bH{|:%*=
insertSort(data); 1QA{NAnu&
} Bd++G'FZ
/** /r8'stRzv
* @param data (GCe D-
*/ {s{bnU
private void insertSort(int[] data) { q
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int temp; TA9Kg=_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8h?):e
} 1H-d<G0)
} dvc=<!"'S
} }G/#Nb)
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} 39yp1
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归并排序: j@o
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package org.rut.util.algorithm.support; 2{Johqf
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import org.rut.util.algorithm.SortUtil; #Fwf]{J
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/** ]?<=DHn
* @author treeroot [6u8EP0xM
* @since 2006-2-2 ! N!A%
* @version 1.0 0XzrzT"&
*/ K2o\+t
public class MergeSort implements SortUtil.Sort{ i]{-KZC
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/* (non-Javadoc) ?= RC?K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0|chRX
*/ 3 q^^Os
public void sort(int[] data) { %>z)Q
int[] temp=new int[data.length]; 1w$X;q"
mergeSort(data,temp,0,data.length-1); `Ei:Z%@7C
} xgQ&'&7l
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private void mergeSort(int[] data,int[] temp,int l,int r){ R^f-j-$o]
int mid=(l+r)/2; ; !9-I%e
if(l==r) return ; KB5<)[bs
mergeSort(data,temp,l,mid); %NH{%K,
mergeSort(data,temp,mid+1,r); ' 2:HBJ
for(int i=l;i<=r;i++){ r^Mu`*x*
temp=data; *>,#'C2
} 17ol %3 M
int i1=l; p02E:?
int i2=mid+1; gNaB^IY
for(int cur=l;cur<=r;cur++){ nl/~7({
if(i1==mid+1) #HyE-|_C
data[cur]=temp[i2++]; mGC! 7^_D`
else if(i2>r) grZ?F~P8
data[cur]=temp[i1++]; 1=Y pNXX
else if(temp[i1] data[cur]=temp[i1++]; ZQN%!2
else /DxeG'O
data[cur]=temp[i2++]; ,b'QL6>`
} (&@,Z I;
} =2&