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。 cMY}Y
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插入排序: @z1QoZ^w
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package org.rut.util.algorithm.support; dn
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import org.rut.util.algorithm.SortUtil; |+
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/** tWIOy6`
* @author treeroot UIAazDyC
* @since 2006-2-2 <=.6Z*x+
* @version 1.0 HMd?`
*/ Kv@P Uzu
public class InsertSort implements SortUtil.Sort{ )>ZT{eF
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/* (non-Javadoc) ",/6bs#$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Q8yb*MN
*/ '[$KG
public void sort(int[] data) { NY.Cr.}
int temp; T?1BcY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Bp^LLH
} }097[-g7
} p<L7qwOii
} kY]"3a
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冒泡排序: mF
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package org.rut.util.algorithm.support; dj0%?g>
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import org.rut.util.algorithm.SortUtil; ("a@V8M`$F
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/** i9ySD
* @author treeroot do8[wej<:
* @since 2006-2-2 <+*0{8?0
* @version 1.0 6:8s,a3&[k
*/ 9QU\J0c/
public class BubbleSort implements SortUtil.Sort{ %IO*(5f
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/* (non-Javadoc) lAnq2j|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U`6|K$@
*/ BH'*I
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public void sort(int[] data) { PMsb"=Ds
int temp; 5t%8y!s
for(int i=0;i for(int j=data.length-1;j>i;j--){ .=eEuH
if(data[j] SortUtil.swap(data,j,j-1); znrO~OK
} i|{psA
} 3wfcGQn|sD
} C_J@:HlJ
} `}ak]Z_
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} &5y
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选择排序: 1@Jp3wW
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package org.rut.util.algorithm.support; bll[E}E|3
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import org.rut.util.algorithm.SortUtil; NFTv4$5d
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/** E3 % ~!ZC
* @author treeroot AE:(:U\
* @since 2006-2-2 G_1r&[N3
* @version 1.0 )B]s.w
*/ XYvj3+
public class SelectionSort implements SortUtil.Sort { ;U3:1hn
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/* z%E(o%l8
* (non-Javadoc) P%:?"t+J`;
* |?V7E\S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?1L<VL=b
*/ RNc:qV<H
public void sort(int[] data) { v7pu
int temp; (l%?YME
for (int i = 0; i < data.length; i++) { ZP~H!
int lowIndex = i; `qJJ{<1&U
for (int j = data.length - 1; j > i; j--) { x1Gx9z9
if (data[j] < data[lowIndex]) { jOT/|k
lowIndex = j; $9?:P}$v
} "m {i`<,
} /wEl\Kx
SortUtil.swap(data,i,lowIndex); '!A}.wF0
} pyV`O[
} ?lkB{-%rQ
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} `xx.,;S
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Shell排序: 07Yak<+~
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package org.rut.util.algorithm.support; S(CkA\[rz
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import org.rut.util.algorithm.SortUtil; lD0a<L3
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/** \FfqIc9;
* @author treeroot :xHKbWz6j
* @since 2006-2-2 7HVENj_b+M
* @version 1.0 rrz([2E2
*/ \)5mO 8w
public class ShellSort implements SortUtil.Sort{ o@N[O^Q
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/* (non-Javadoc) 7zx
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AmC9qk8Q
*/ v {r %/*
public void sort(int[] data) { 842v^ 2
for(int i=data.length/2;i>2;i/=2){ >d`GNE
for(int j=0;j insertSort(data,j,i); |J4sQ!%K
} 0R? @JC
} I'BHNZO5tf
insertSort(data,0,1); V|@bITJ?7
} g%Tokl
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/** YvN]7tcb
* @param data $)@D(m,ybd
* @param j S'^ q
* @param i dhA~Yu
*/ E oixw8hz
private void insertSort(int[] data, int start, int inc) { UUDHknm"
int temp; baD063P;
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ECA<%'$?E
} J*b Je"8
} ),vDn}>
} ?7V~>i8[
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} t O.5
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快速排序: n=4
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package org.rut.util.algorithm.support; ~n@rX=Y)]0
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import org.rut.util.algorithm.SortUtil; $%cHplQz5
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/** vE^tdzAG
* @author treeroot e`b#,=
* @since 2006-2-2 `XH0S`B
* @version 1.0 G\F>*
*/ izcaWt3 a
public class QuickSort implements SortUtil.Sort{ .B<Bqr@?8
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/* (non-Javadoc) UA*VqK)Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;6``t+]q
*/ +'c+X^_
public void sort(int[] data) { R+NiIoa
quickSort(data,0,data.length-1); P~{8L.w!>W
} -_Z 4)"k
private void quickSort(int[] data,int i,int j){ WtZI1`\qe
int pivotIndex=(i+j)/2; cQhr{W,Un
file://swap `WXlq#:K
SortUtil.swap(data,pivotIndex,j); Kw`CN
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int k=partition(data,i-1,j,data[j]); tgG*k$8z
SortUtil.swap(data,k,j); ;DK%!."%
if((k-i)>1) quickSort(data,i,k-1); 3E*m.jX
if((j-k)>1) quickSort(data,k+1,j); O%kUj&h^
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} ]87BP%G
/** seEo)m`d
* @param data
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* @param i an"~n`g
* @param j )L:e0u
* @return ?Q-Tyf$3
*/ HQm_ K0$
private int partition(int[] data, int l, int r,int pivot) { #{|cSaX<
do{ TC/c5:)]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *KvD$(ny
SortUtil.swap(data,l,r); 3U >-~-DS
} U)bv,{-q
while(l SortUtil.swap(data,l,r); ;9k>;g3m
return l; lcZ.}
} qMJJB l
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} r+Ki`HD%
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改进后的快速排序: V+Tv:a
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package org.rut.util.algorithm.support; k B>F(^
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import org.rut.util.algorithm.SortUtil; [oTe8^@[
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/** r+FEgSDa]
* @author treeroot *z0d~j*W;
* @since 2006-2-2 B}d&tH2^s
* @version 1.0 ps 3)d
*/ _Ub
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public class ImprovedQuickSort implements SortUtil.Sort { *XTd9E^tXq
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private static int MAX_STACK_SIZE=4096; q;'f3Y
private static int THRESHOLD=10; 1/Ts .\K3
/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /IpCo
*/ HK!ecQ^+
public void sort(int[] data) { Xi&J%N'
int[] stack=new int[MAX_STACK_SIZE]; 1]7gYNzV"
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int top=-1; aZA``#p+
int pivot; jn2=)KBa_
int pivotIndex,l,r; OH\^j1x9I
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stack[++top]=0; A8Ju+
stack[++top]=data.length-1; qNEp3WY:
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while(top>0){ +"?+Be
int j=stack[top--]; Tz]R}DKB&
int i=stack[top--]; 5}#wp4U
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pivotIndex=(i+j)/2; ,'X"(tpu@
pivot=data[pivotIndex]; L!fTYX#K]
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SortUtil.swap(data,pivotIndex,j); UD.bb
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file://partition n<ZPWlJ
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do{ L)sgW(@2
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4yl{:!la
SortUtil.swap(data,l,r); =gB5JB<}2
} g$nS6w|5H
while(l SortUtil.swap(data,l,r); |mb2<! ag{
SortUtil.swap(data,l,j); Ww7Ya]b.k
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if((l-i)>THRESHOLD){ ||$&o!;/L
stack[++top]=i; cr1x
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stack[++top]=l-1; @]=40Yj~w
} g*Y,.
if((j-l)>THRESHOLD){ {7NGfzwp;6
stack[++top]=l+1; q-F
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stack[++top]=j; EApKN@<"
} 3A7774n=P
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} PVCoXOqh
file://new InsertSort().sort(data); JB_fS/I
insertSort(data); Luq4q95]
} u!_l/'\
/** >L7s[vKn
* @param data ag=d6q
*/ )Z}AhX
private void insertSort(int[] data) { *3GV9'-P
int temp; :D.0\.p
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]?Ef0?44
} Ni,nQ;9
} uDF;_bli)H
} {0zn~+
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归并排序: Tg\bpLk0=
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package org.rut.util.algorithm.support; Zi!Ta"}8
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import org.rut.util.algorithm.SortUtil; F@w; .e!
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/** P15
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* @author treeroot iGN\ >m}
* @since 2006-2-2 IPiV_c-l
* @version 1.0 sibYJK Oy
*/ {28|LwmL
public class MergeSort implements SortUtil.Sort{ W yL+HB}
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/* (non-Javadoc) U.%Kt,qB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UX 1
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*/ JfY*#({y
public void sort(int[] data) { "}4%v Zz
int[] temp=new int[data.length]; r"h;JC/&<T
mergeSort(data,temp,0,data.length-1); {$*N1$(%
} v9*m0|T0M
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private void mergeSort(int[] data,int[] temp,int l,int r){ -yYdj1y;
int mid=(l+r)/2; wp[Ug2;G
if(l==r) return ; "q@m6fs
mergeSort(data,temp,l,mid); 1>!LK_
mergeSort(data,temp,mid+1,r); sp9gz~Kq
for(int i=l;i<=r;i++){ 0XHQ5+"8
temp=data; c8RJOc4X
} em$pU*`P
int i1=l; y_]+;% w:
int i2=mid+1; %u -x9
for(int cur=l;cur<=r;cur++){ I.2J-pu}
if(i1==mid+1) |{ jT+
data[cur]=temp[i2++]; bF)G+IH
else if(i2>r) /zn=AAYb
data[cur]=temp[i1++]; o5<<vvdA
else if(temp[i1] data[cur]=temp[i1++]; ~(5r+Z}*`
else 2G8pDvBr
data[cur]=temp[i2++]; SC{m@
} !3v&+Jrf6
} (~T*yH ~
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} DSGcxM+
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改进后的归并排序: p{FI_6db
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package org.rut.util.algorithm.support; 5=dL`
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import org.rut.util.algorithm.SortUtil; <=uYfi 3,
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/** S}m_XR]
* @author treeroot enoj4g7em^
* @since 2006-2-2 1I+9?fa
* @version 1.0 2|1fb-AR
*/ vDy&sgS$<
public class ImprovedMergeSort implements SortUtil.Sort { p7h#.m~Qu
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private static final int THRESHOLD = 10; hy;VvAH5
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/* !_S>ER
* (non-Javadoc) V5|ANt
* [U\?+@E*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D}-.<
*/ >.h:Y5
public void sort(int[] data) { ,Z.sGv
int[] temp=new int[data.length]; BHXi g~d
mergeSort(data,temp,0,data.length-1); jm_-f
} )P$(]{
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private void mergeSort(int[] data, int[] temp, int l, int r) { %+7]/_JO&