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。 Tdh(J",d
插入排序: ?OW!D?
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package org.rut.util.algorithm.support; \me5"ZU
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import org.rut.util.algorithm.SortUtil; ECt<\h7}
/** OPN\{<`*d
* @author treeroot kNK0KL
* @since 2006-2-2 =F|9ac9X
* @version 1.0 j-d&4,a:c
*/ \^6 [^\@[
public class InsertSort implements SortUtil.Sort{ 2|x
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/* (non-Javadoc) R?u(aY)P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a/uo)']B
*/ %Bw:6Y4LZ
public void sort(int[] data) { xc*a(v0
int temp; q\@_L.tc[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =4` wYh
} Ck#e54gJX
} T1q27I
} i&m_G5u88
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} %16Lo<DPm
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冒泡排序: ,c"J[$i$
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package org.rut.util.algorithm.support; 0g30nr)
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import org.rut.util.algorithm.SortUtil; *EGzFXa
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/** ^"O>EY':
* @author treeroot -$"$r ~ad
* @since 2006-2-2 =Rx4ZqTI|
* @version 1.0 O:#YLmbCN
*/ YzjRD:
public class BubbleSort implements SortUtil.Sort{ c #TY3Z|
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/* (non-Javadoc) |kK5:\H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mt+i0PIfj
*/ I#xdksY
public void sort(int[] data) { y?a71b8m
int temp; yZ{yzv'D&
for(int i=0;i for(int j=data.length-1;j>i;j--){ s.p>
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if(data[j] SortUtil.swap(data,j,j-1); $ (;:4
} |'-aR@xJ
} cW>=/
} ef^GJTv&k
} ,r*Kxy
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} sJx_X8
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选择排序: Xr=BxBttp
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package org.rut.util.algorithm.support; ;U>nj],uv
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import org.rut.util.algorithm.SortUtil; @]q^OMLY
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/** K?J_cnJ`
* @author treeroot ,z.l#hj,{
* @since 2006-2-2 _^Q!cB'~/`
* @version 1.0 S[ !6Lw
*/ x?o#}:S
public class SelectionSort implements SortUtil.Sort { RAl/p9\A+
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/* R_B0CM<!
* (non-Javadoc) o)XrC
* )qb'tZz/g_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OW#0$%f
*/ 0e<>2AL
public void sort(int[] data) { %d];h
int temp; <[\I`kzq
for (int i = 0; i < data.length; i++) { 8<"g&+T
int lowIndex = i; ZeuL*c \
for (int j = data.length - 1; j > i; j--) { w[d8#U
if (data[j] < data[lowIndex]) { =V|jd'iwx
lowIndex = j; <&Xl b0
} jUM'f24
} l,hOnpm9
SortUtil.swap(data,i,lowIndex); m6[}KkW
} ,V,mz?d^9
} H2%Qu<Kg2
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} f~wON>$K
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Shell排序: s1Acl\l-uF
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package org.rut.util.algorithm.support; by'KJxl[
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import org.rut.util.algorithm.SortUtil; :=y5713
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/** Q&.uL}R
* @author treeroot 0zNbux_
* @since 2006-2-2 %?+vtX
* @version 1.0 +ZNOvcsV
*/ H;4QuB'^
public class ShellSort implements SortUtil.Sort{ ,B'=$PO%
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/* (non-Javadoc) nfF$h}<o+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \4wMv[;7
*/ `sqr>QD
public void sort(int[] data) { 0#OyT'~V%
for(int i=data.length/2;i>2;i/=2){ OiQf=Uz\
for(int j=0;j insertSort(data,j,i); :wS&3:h
} =_ pSfKR;
} AwNr}9`
insertSort(data,0,1); zQulPU
} >fWGiFmlk
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/** Qwpni^D8j
* @param data pi"M*$
* @param j AMjr[!44 @
* @param i :W, S
*/ 't`h?VvL
private void insertSort(int[] data, int start, int inc) { y@7fR9hp<
int temp; @
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); N\*oL*[j
} <b
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} 'Wnh1|z
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} *@' 'OyL
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快速排序: =F$?`q`
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package org.rut.util.algorithm.support; Uo >aQk
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import org.rut.util.algorithm.SortUtil; pL1ABvBB
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/** x3cjyu<K
* @author treeroot rQ{|0+l
* @since 2006-2-2 zA9q`ePS
* @version 1.0 :|s;2Y
*/ w\G J,e
public class QuickSort implements SortUtil.Sort{ 4,LS08&gh
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/* (non-Javadoc) kMCP .D45;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <VhmtT%7
*/ THhxj)
public void sort(int[] data) { 3XlQ 4
quickSort(data,0,data.length-1); fE~KWLm
} `{!A1xKZ
private void quickSort(int[] data,int i,int j){ Hi={(Z5tC4
int pivotIndex=(i+j)/2; ]]:K
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SortUtil.swap(data,pivotIndex,j); cEu_p2(7!B
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int k=partition(data,i-1,j,data[j]); sPi
SortUtil.swap(data,k,j); IrL7%?
if((k-i)>1) quickSort(data,i,k-1); 'Hx#DhiFz
if((j-k)>1) quickSort(data,k+1,j); HNS^:XR
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} *fc8M(]&d
/** yZ6WbI8n
* @param data AVQcD`V3B
* @param i 39 }e
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* @param j ,;}
* @return Pg T3E
*/ +pqbl*W;1
private int partition(int[] data, int l, int r,int pivot) { :bct+J}l~
do{ O80Z7
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); T+Re1sPr?
SortUtil.swap(data,l,r); >
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} `3\U9ZH23
while(l SortUtil.swap(data,l,r); Hj>9 #>b
return l; =hTJp/L
} #B~;j5
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} 'S6zk wC]
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改进后的快速排序: |_p7vl"
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package org.rut.util.algorithm.support; A x8 >
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import org.rut.util.algorithm.SortUtil; e">&B]#}
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/** 5/P. 4<c7
* @author treeroot D Z*c.|W
* @since 2006-2-2 Vwp>:'Pu
* @version 1.0 y/S3ZJY
*/ ,]0BmlD
public class ImprovedQuickSort implements SortUtil.Sort { <fHHrmZ#/.
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private static int MAX_STACK_SIZE=4096; P
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private static int THRESHOLD=10;
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/* (non-Javadoc) [xM&Jdf8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,M`1 k
*/ uq]=L
public void sort(int[] data) { Q<6* UUQm
int[] stack=new int[MAX_STACK_SIZE]; +ZjDTTk
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int top=-1; {H,O@
int pivot; T4:H:
int pivotIndex,l,r; MMrN#&r
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stack[++top]=0; GjwH C{
stack[++top]=data.length-1; $MDmY4\
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while(top>0){ | t:UpP
int j=stack[top--]; tF,`v{-up
int i=stack[top--]; -_9*BvS]R
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pivotIndex=(i+j)/2; ?wkT=mv
pivot=data[pivotIndex]; ILDO/>n
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SortUtil.swap(data,pivotIndex,j); A\S=>[ar-
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do{ ,1 H|{ <
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /D9#v1b
SortUtil.swap(data,l,r); _}47U7s8
} =,it`8;
while(l SortUtil.swap(data,l,r); |(tl
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SortUtil.swap(data,l,j); "\Dqtr w
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if((l-i)>THRESHOLD){ a=ZVKb
stack[++top]=i; =k d-rIBc
stack[++top]=l-1; J;XO1}9
} kJB:=iq/x$
if((j-l)>THRESHOLD){ zfDfy!\2_
stack[++top]=l+1; el$@^Wy&$
stack[++top]=j; ZL0Vx6Ph
} en|~`]HF
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} V(K;Gc
file://new InsertSort().sort(data); umuj>
insertSort(data); 9+*{3 t
} ^vh!1"T
/** gcwJ{&
* @param data Y/UvNb<lK
*/ wG:RvgX}
private void insertSort(int[] data) { <z60EvHg
int temp; 7>zUT0SS
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ? Lxc1
} Z~(X[Zl
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} vt"bB
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} b"o\-iUioe
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归并排序: fif'ptK
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package org.rut.util.algorithm.support; <~ay4JY
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import org.rut.util.algorithm.SortUtil; `yl|NL
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/** d\Up6F
* @author treeroot KRm)|bgE
* @since 2006-2-2 bRFZ:hu l
* @version 1.0 0 7qjWo/t
*/ |Z>}#R!,P
public class MergeSort implements SortUtil.Sort{ 1:7fV@jw
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/* (non-Javadoc) lhE]KdE3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4VF]tX?o
*/ ci?\W6
public void sort(int[] data) { Z! /_H($
int[] temp=new int[data.length]; Yt_tAm
mergeSort(data,temp,0,data.length-1); 6&i])iH
} ?gAwMP(>
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private void mergeSort(int[] data,int[] temp,int l,int r){ +5O^{Ce6
int mid=(l+r)/2; sw1gpkX
if(l==r) return ; &)q>Z!C-l
mergeSort(data,temp,l,mid); $&,
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mergeSort(data,temp,mid+1,r); <aFB&Fm
for(int i=l;i<=r;i++){ ,
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temp=data; |jH Yf42Q
} F{ 4k2Izr
int i1=l; '%|Um3);0p
int i2=mid+1; ulg= ,+%r
for(int cur=l;cur<=r;cur++){ p;zT #%
if(i1==mid+1) It'kO jx]
data[cur]=temp[i2++]; YJz06E1 -9
else if(i2>r) !6taOT>v
data[cur]=temp[i1++]; s 64@<oU<"
else if(temp[i1] data[cur]=temp[i1++]; &