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。 |9I;`{@
插入排序: F?kVW[h?q
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package org.rut.util.algorithm.support; 4;||g@f'[
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import org.rut.util.algorithm.SortUtil; i`$rzXcS
/** /(aX>_7jg
* @author treeroot fna>>
* @since 2006-2-2 v3Yj2LSqx
* @version 1.0 bB-v ar
*/ h'p0V@!N
public class InsertSort implements SortUtil.Sort{ ;>9pJ72r
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/* (non-Javadoc) {)qP34rM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~tvoR&{I
*/ GB3B4)cX4Y
public void sort(int[] data) { : 4WbDeR
int temp; l0{DnQA>I
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P}`1#$
} h :R)KM
} 0)!zhO_}
} Pa +BE[z
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} (xed(uFEK
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冒泡排序: _4$DnQ6&
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package org.rut.util.algorithm.support; 6,1|y%(f
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import org.rut.util.algorithm.SortUtil; /p0LtUMu
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/** zQ}N
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* @author treeroot !++62Lf
* @since 2006-2-2 8zWPb
* @version 1.0 [Gy'0P(EQ
*/ ~*[4DQ[\
public class BubbleSort implements SortUtil.Sort{ em}Qv3*#
1 ,'^BgI,
/* (non-Javadoc) c&-$?f
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C:MGi7f
*/ x~^I/$
public void sort(int[] data) { 9G+rxyWMW
int temp; D:tZiS=0
for(int i=0;i for(int j=data.length-1;j>i;j--){ ycD.:w p\'
if(data[j] SortUtil.swap(data,j,j-1); 'Y\"^'OU\
} @98SC}}u
} {C6;$#7P
} UE w3AO
} l$_rA~Mo
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} Po.BcytM
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选择排序: $:II@=
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package org.rut.util.algorithm.support; m?$G(E5
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import org.rut.util.algorithm.SortUtil; !p2,|6Y`y
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/** Ilb
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* @author treeroot N06O.bji
* @since 2006-2-2 agT[y/gb
* @version 1.0 :-" jKw
*/ "IJMvTmj
public class SelectionSort implements SortUtil.Sort { [Od9,XBa
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/* l>Ja[`X@
* (non-Javadoc) y4rJ-
* ':)j@O3-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PJ:5Lb<
*/ $ywh%OEH
public void sort(int[] data) { E=lfg8yb:
int temp; b2%bgs
for (int i = 0; i < data.length; i++) { _6zP]|VBr
int lowIndex = i; y7EX&
for (int j = data.length - 1; j > i; j--) { [Vp2!"
if (data[j] < data[lowIndex]) { s
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lowIndex = j; @k6}4O?{
} ?9@Af{b t2
} I} fcFL8
SortUtil.swap(data,i,lowIndex); $'{`i5XB
} vqz#V=J{
} T)f_W
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} :k(t/*Nl3
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Shell排序: {<4?o?
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package org.rut.util.algorithm.support; _|wY[YJ[
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import org.rut.util.algorithm.SortUtil; 4eL54).1O
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/** ?mfWm{QTt
* @author treeroot 8!Mzr1:
* @since 2006-2-2 BBE1}V!u
* @version 1.0 ^^3va)1{!
*/ x][9ptrh
public class ShellSort implements SortUtil.Sort{ gdFoTcHgO|
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/* (non-Javadoc) 4m[C-NB!g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hs-.83V
*/ (g2r\hI
public void sort(int[] data) { NF(IF.8G
for(int i=data.length/2;i>2;i/=2){ )/T$H|
for(int j=0;j insertSort(data,j,i); A+1]Ql)$
} ~K$"PKs3
} 7cP[o+
insertSort(data,0,1); xc<eU`-'b
} 1S]gD&V
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/** :Z]hI+7
* @param data ~7 L)n
* @param j bo !]
* @param i ~eOj:H
*/ {G1aAM\Hz
private void insertSort(int[] data, int start, int inc) { 1L=Qg4 H
int temp; s]<r
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fy=C!N&/
} p2c=;5|/Q
} +'Y(V&
} +;wqX]SD &
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} XvkI+c
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快速排序: o- QG&
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package org.rut.util.algorithm.support; !0csNg!
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import org.rut.util.algorithm.SortUtil; $aPHl
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/** Xt,,AGm}
* @author treeroot wH_n$w
* @since 2006-2-2 iraRB~
* @version 1.0 ZDkD%SCy
*/ rE{Xo:Cf
public class QuickSort implements SortUtil.Sort{ CVSsB:H6e
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/* (non-Javadoc) EfBVu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ril21o! j
*/ &Wz`>qYL*
public void sort(int[] data) { BUA6(
quickSort(data,0,data.length-1); qzlMn)e
} zhX`~){N6
private void quickSort(int[] data,int i,int j){ HMS9y%zl/
int pivotIndex=(i+j)/2; &A9A#It
file://swap #C,f/PXfaB
SortUtil.swap(data,pivotIndex,j); @U
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int k=partition(data,i-1,j,data[j]); ,+f0cv4
SortUtil.swap(data,k,j); ZYA.1VrM
if((k-i)>1) quickSort(data,i,k-1); 7=p-A_X
if((j-k)>1) quickSort(data,k+1,j); 'D0X?2
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} Neo^C_[vN
/** rv%ye
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* @param data x#j\"$dla
* @param i *n*N|6+
* @param j PZ!dn%4jy
* @return #?$'nya*u
*/ X#kjt)W
private int partition(int[] data, int l, int r,int pivot) { I~]Q55
do{ (XG[_
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); IzGB
SortUtil.swap(data,l,r); R<lNk<
} ]zvVY:v
while(l SortUtil.swap(data,l,r); R0hctT1j
return l; 4`UL1)A]
} }@:QYTBi }
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改进后的快速排序: 3?*M{Y|
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package org.rut.util.algorithm.support; NHFEr
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import org.rut.util.algorithm.SortUtil; CmJ?_>
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/** pe!dm}!h[
* @author treeroot x'M^4{4[
* @since 2006-2-2 y3KcM#[
* @version 1.0 ra9cD"/J &
*/ s=nVoc{Yt
public class ImprovedQuickSort implements SortUtil.Sort { ,h@R' f!
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private static int MAX_STACK_SIZE=4096; gP%|:"
private static int THRESHOLD=10; znQ'm^ h
/* (non-Javadoc) `j}_BW_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S}m$,<x
*/ 1(%>`=R8
public void sort(int[] data) { %CxEZPe$
int[] stack=new int[MAX_STACK_SIZE]; ie$`pyj!x
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int top=-1; W8G9rB|T
int pivot; b@2Cll#
int pivotIndex,l,r; &PRx,G5
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stack[++top]=0; TDAWI_83-
stack[++top]=data.length-1; .B 85!lCF
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while(top>0){ q?imE ~&U
int j=stack[top--]; dq
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int i=stack[top--]; 7>'uj7r]=
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pivotIndex=(i+j)/2; " xDx/d8B
pivot=data[pivotIndex]; UK"}}nO@e
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SortUtil.swap(data,pivotIndex,j);
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file://partition *?^Z)C>
l=i-1; Sg. +`xww3
r=j; }xkLD!
do{ C5PmLiOHY>
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4-7kS85
SortUtil.swap(data,l,r); |RR%bQ^{
} fjIcB+Z
while(l SortUtil.swap(data,l,r); _e?q4>B)c
SortUtil.swap(data,l,j); 4?>18%7&
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if((l-i)>THRESHOLD){ tjZ \h=
stack[++top]=i; .1.J5>/n
stack[++top]=l-1; 9^ >M>f"
} 9TVB<}0G
if((j-l)>THRESHOLD){ SUH mBo"}
stack[++top]=l+1; \Y!T>nWn)I
stack[++top]=j; lX98"}
} Y{k>*: Ax_
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} s;fVnaqG:
file://new InsertSort().sort(data);
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insertSort(data); LbJtpwz>z
} )\T@W
/** $^W-Wmsz
* @param data a
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*/ XJx,9trH
private void insertSort(int[] data) { $nB-ADRu@
int temp; !;o\5x<'$O
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 24T@N~\g
} QU^/[75Ea0
} xab]q$n]k
} *2JH_Cj`
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} I?_E,.)[ I
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归并排序: R*s* +I
UGhW0X3k
package org.rut.util.algorithm.support; (;;J,*NP
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import org.rut.util.algorithm.SortUtil; LXHwX*`Y
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/** ,M\j%3
* @author treeroot J0^{,eY<
* @since 2006-2-2 cPpu
* @version 1.0 \*f;!{P{
*/ az0cS*@
public class MergeSort implements SortUtil.Sort{ Vh"MKJ'R^
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/* (non-Javadoc) 28nmQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gs[Vu@*
*/ cCM
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public void sort(int[] data) { UdT&cG
int[] temp=new int[data.length]; [RAj3Fr0
mergeSort(data,temp,0,data.length-1); >f&xJq
} +"]oc{W!
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private void mergeSort(int[] data,int[] temp,int l,int r){ `kv1@aQPL
int mid=(l+r)/2; eYJ{LPo
if(l==r) return ; _h0-
mergeSort(data,temp,l,mid); c {1V.
mergeSort(data,temp,mid+1,r); ZhH+D`9
for(int i=l;i<=r;i++){ mfXD1]<.
temp=data; `.{U-U\
} ; D1FAz
int i1=l; 5a'yXB}
int i2=mid+1; hP?7zz$*j
for(int cur=l;cur<=r;cur++){ 7^ 4jcfJH
if(i1==mid+1) g[/^cJHQ
data[cur]=temp[i2++]; O$a#2p&
else if(i2>r) *"1~bPl
data[cur]=temp[i1++]; ; ;<J
x.
else if(temp[i1] data[cur]=temp[i1++]; l`SK*Bm~<
else ./$
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data[cur]=temp[i2++]; q1 H=/[a
} 53B.2
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} \CcmePTN#x
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} "37*A<+f
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改进后的归并排序: *5e<\{!
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package org.rut.util.algorithm.support; S|HY+Z6n'
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import org.rut.util.algorithm.SortUtil; F&