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。 n,l{1 q
插入排序: 5`tMHgQO
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package org.rut.util.algorithm.support; .5AyB9a%&
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import org.rut.util.algorithm.SortUtil; P\k5%
/** 31-:xUIX
* @author treeroot ) 1PjI9M
* @since 2006-2-2 N3U.62
* @version 1.0 jt6q8
*/ -ufO,tJRLL
public class InsertSort implements SortUtil.Sort{ *f ;">(`o*
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/* (non-Javadoc) "I}]]?y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &l-1.muQ
*/ 7Z7e}|
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public void sort(int[] data) { N*$L#L$*
int temp; t gpg
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); MpCK/eiC
} drkY~!a
} bd&
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} u|eV'-R)s
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冒泡排序: r2 .f8U
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package org.rut.util.algorithm.support; y7Sey;
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import org.rut.util.algorithm.SortUtil; WJA0 `<~
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/** b,r{wrLe)
* @author treeroot 8x /]H(J
* @since 2006-2-2 UD6:X&Un
* @version 1.0 M[1!#Q><!
*/ 2M`:/ shq
public class BubbleSort implements SortUtil.Sort{ a\]glw\;
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/* (non-Javadoc) XcH_Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8}_M1w6v
*/ |9*8u>|RC
public void sort(int[] data) { :41Ch^\E
int temp; aFf(m-
for(int i=0;i for(int j=data.length-1;j>i;j--){ /UP1*L
if(data[j] SortUtil.swap(data,j,j-1); "'@>cJ=
} +B#+'
} (_.0g}2
} DV5K)m&G
} aEvW<jHh
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} CA[3R
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选择排序: L,7+26XV"B
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package org.rut.util.algorithm.support; Gw@]w;ed
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import org.rut.util.algorithm.SortUtil; MIx,#]C&
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/** 29tih{xx
* @author treeroot |g1~-
* @since 2006-2-2 .tQeOZW'
* @version 1.0 chs] ,7R
*/ QTLGM-Z
public class SelectionSort implements SortUtil.Sort { ww#]i&6
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/* H:5- S
* (non-Javadoc) d,+a}eTP'
* Q xm:5P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )0UXTyw^
*/ eJ3;Sd''
public void sort(int[] data) { #Et%s8{
int temp; =6H
for (int i = 0; i < data.length; i++) { EgB$y"fs
int lowIndex = i; 5SQqE@g%
for (int j = data.length - 1; j > i; j--) { <%ba
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if (data[j] < data[lowIndex]) { Z#znA4;)
lowIndex = j; T6^H%;G
} mK_2VZj&
} :ND e<6?u
SortUtil.swap(data,i,lowIndex); \\iX9-aI<
} @0[#XA_>
} 8H@] v@Z2
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} Je &O
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Shell排序: 8kYI ~
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package org.rut.util.algorithm.support; AU3>v
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import org.rut.util.algorithm.SortUtil; zkb[u"
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/** ?&_u$Nn
* @author treeroot sp8P[W1a
* @since 2006-2-2 rF\L}& Sw
* @version 1.0 S!6 ? b5
*/ 9?38/2kX4
public class ShellSort implements SortUtil.Sort{ ^+k~{F,)
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/* (non-Javadoc) /#-zI#iK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pz0Q@ n/X
*/ D&-cNxh
public void sort(int[] data) { a%XF"*^v
for(int i=data.length/2;i>2;i/=2){ eo&^~OVT
for(int j=0;j insertSort(data,j,i); q. s'z}
} IlfH
} 9YEE.=]T
insertSort(data,0,1); Z3qr2/
}
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/** ?)V|L~/
* @param data <sw fYT!N
* @param j kK%@cIXS3
* @param i Qr9@e Q1Pp
*/ q5#6PYIq
private void insertSort(int[] data, int start, int inc) { tFvXVfml
int temp; PUbfQg
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U%V4@iz~\m
} hn[lhC
} opfg %*
} kps}i~Jb
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} ?X^.2+]*&
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快速排序: -jWXE
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package org.rut.util.algorithm.support; BG^)?_69
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import org.rut.util.algorithm.SortUtil; y"Ios:v@-
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/** {&uN q^Ch
* @author treeroot ap wA
* @since 2006-2-2 +N2R'Phv
* @version 1.0 g+%Pg@[
*/ Nz;f| 2h
public class QuickSort implements SortUtil.Sort{ L2>
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/* (non-Javadoc) r,Tq";N'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MHQM'
*/ ZfVw33z
public void sort(int[] data) { OfPv'rW{x
quickSort(data,0,data.length-1); bZ[ay-f6oK
} 'b:UafV
private void quickSort(int[] data,int i,int j){ ->rudRQ
int pivotIndex=(i+j)/2; mt\pndTy7!
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SortUtil.swap(data,pivotIndex,j); Rc(E';uc
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int k=partition(data,i-1,j,data[j]); w~ O)DhC
SortUtil.swap(data,k,j); *hlinQKs
if((k-i)>1) quickSort(data,i,k-1); 7bL48W<QD
if((j-k)>1) quickSort(data,k+1,j); Q`!<2i;
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} \2[sUY<W
/** Vo(>K34
* @param data PwC^
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* @param i Jix;!("
* @param j q854k+C
* @return 3(3-#MD0
*/ N[&(e
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private int partition(int[] data, int l, int r,int pivot) { |\T!,~
do{ v(`5exWV
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }WnoI2
SortUtil.swap(data,l,r); chXTFLC~
} UHS{X~CS
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while(l SortUtil.swap(data,l,r); aC#{@t
return l; o+g\\5s
} $g '4'
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} 4XNkto
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改进后的快速排序: I<!,_$:
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package org.rut.util.algorithm.support; HY,VJxR[
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import org.rut.util.algorithm.SortUtil; :u|F>e
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/** qF4=MQm\aE
* @author treeroot %o_CD>yD
* @since 2006-2-2 -?1ed|I8
* @version 1.0 rnQ9uNAu
*/ o?><(A|
public class ImprovedQuickSort implements SortUtil.Sort { )F m'i&F_
} QpyU%
private static int MAX_STACK_SIZE=4096; sfR0wEqI
private static int THRESHOLD=10; Fiaeo0
/* (non-Javadoc) cB_3~=fV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9
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*/ zTg&W7oz
public void sort(int[] data) { %B(E;t63W
int[] stack=new int[MAX_STACK_SIZE]; Ns6CxE9
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int top=-1; t'* 2)U
int pivot; q(Zu;ecBN
int pivotIndex,l,r; S#l)|c_~
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stack[++top]=0; D)bR-a_^
stack[++top]=data.length-1; 3yu,qb'"&
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while(top>0){ Qk8YR5K
int j=stack[top--]; Z4{~
int i=stack[top--]; :tp{(MF
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pivotIndex=(i+j)/2; G$1gk ^G's
pivot=data[pivotIndex]; W <M\b#
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SortUtil.swap(data,pivotIndex,j); UQ~gjnb[c
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file://partition <zp|i#~
l=i-1; H;Gd
r=j; bix}#M
do{ @pV&{Vp
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); jN{+$ @cI
SortUtil.swap(data,l,r); Rip[
} _F3=
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while(l SortUtil.swap(data,l,r); cWp5pGIzfp
SortUtil.swap(data,l,j); =z9FjK
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if((l-i)>THRESHOLD){ :PP!v!vk
stack[++top]=i; %i@Jw
stack[++top]=l-1; ~i=5NUE
} CM
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if((j-l)>THRESHOLD){ rQ&F Gb
stack[++top]=l+1; g&O!w!T
stack[++top]=j; +A<7:`sO
} -XWlmw*i(g
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} yOE N*^6
file://new InsertSort().sort(data); ^vc#)tm5p
insertSort(data); ;xjw'%n,
} P|;=dX#-
/** =:Lc-y >
* @param data -}P/<cu:
*/ &u0on)E
private void insertSort(int[] data) { 'Ug-64f>
int temp; L%fJH_$_s
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i~.9B7hdE
} hA387?
} Jl{g"N{2u'
} e'&<DE)
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} 7-[^0qS
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归并排序:
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package org.rut.util.algorithm.support; D]hwG0Chd
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import org.rut.util.algorithm.SortUtil; 5j#XNc)"
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/** ){"-J&@?
* @author treeroot 7hl,dtn7
* @since 2006-2-2 8&++S> <
* @version 1.0 we2D!Ywr
*/ c8M'/{4rH
public class MergeSort implements SortUtil.Sort{ TbR!u:J
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/* (non-Javadoc) 7=pJ)4;ZA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kT4Oal+4
*/ Hb@PQcj
public void sort(int[] data) { UYsyVY`Fm|
int[] temp=new int[data.length]; R;F z"J
mergeSort(data,temp,0,data.length-1); )r6d3-p1
} );*#s~R
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private void mergeSort(int[] data,int[] temp,int l,int r){ 3L-}B#tI
int mid=(l+r)/2; 0 A6%!h
if(l==r) return ; 7A4_b8
mergeSort(data,temp,l,mid); Nx<%'-9)|
mergeSort(data,temp,mid+1,r); z#t;n
for(int i=l;i<=r;i++){ IGcYPL\&
temp=data; Un{ 9reX5
} LABLT;c
int i1=l; yn KgNi
int i2=mid+1; 9vJ'9Z2\
for(int cur=l;cur<=r;cur++){ ]B9Ut&mF;
if(i1==mid+1) #mH4\s
data[cur]=temp[i2++]; ec"+Il
else if(i2>r) p|VgtQ/)%
data[cur]=temp[i1++]; 4'U #<8
else if(temp[i1] data[cur]=temp[i1++]; Wf5ohXm>
else S '%!KGVe
data[cur]=temp[i2++]; R^tDL
} VT5o#NR{R
} uI+^8-HZ;
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} (xlAS
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改进后的归并排序: QOKE9R#Y
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package org.rut.util.algorithm.support; i2m+s;
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import org.rut.util.algorithm.SortUtil; <ly.l]g
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/** qn#f:xltu
* @author treeroot Nt
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* @since 2006-2-2 I9E]zoj8
* @version 1.0 0v'FE35~s
*/ 'I1^70bB
public class ImprovedMergeSort implements SortUtil.Sort { fv?vfI+m
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private static final int THRESHOLD = 10; 0ZjinWkR[
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/* wEMg~Hh
* (non-Javadoc) 7~7_T#dTh
* yfCdK-9+B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x/xd
*/ FvV:$V|
public void sort(int[] data) { rT{+ h}vO
int[] temp=new int[data.length]; Z{spo=
mergeSort(data,temp,0,data.length-1); [{cMEV&
} OAd}#R\U
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private void mergeSort(int[] data, int[] temp, int l, int r) { g=_@j`
int i, j, k; J:JkX>n%k=
int mid = (l + r) / 2; "I)`gy&
if (l == r) MPF;P&6
return; =r1@?x
if ((mid - l) >= THRESHOLD) 1"P^!N
mergeSort(data, temp, l, mid); L[cl$pYV
else pG(%yIiAi
insertSort(data, l, mid - l + 1); GV(@(bI*
if ((r - mid) > THRESHOLD) )H`1CcT
mergeSort(data, temp, mid + 1, r); 6[l{@*r"
else ELqpIXq#
insertSort(data, mid + 1, r - mid); P*zOt]T
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for (i = l; i <= mid; i++) { 92)e/t iP
temp = data; ~Bs=[TNd[
} @h";gN
for (j = 1; j <= r - mid; j++) { n*vzp?+Y
temp[r - j + 1] = data[j + mid]; Rw#4 |&
} +4*jO5EZ
int a = temp[l]; #gd`X|<Ch
int b = temp[r]; KG8Km
for (i = l, j = r, k = l; k <= r; k++) { >)p8^jX
if (a < b) { ^YwTO/Q|
data[k] = temp[i++]; |Wzdu2T
a = temp; ^E349c-|
} else { %^ z##7^
data[k] = temp[j--]; n#lZRwhq
b = temp[j]; ^-GzWT
} M5>cYVG
} t?<pyw $
} 7"0l>0 \
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/** Y}Gf%Xi,
* @param data YdNmnB%J
* @param l | Xv]s61
* @param i eJ
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*/ ^CWxYDG*
private void insertSort(int[] data, int start, int len) { XlGDv*d:#d
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); haW*W=kv)
} eod-N}o
} %
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} /3ty*LQT
} B6gn(w3
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堆排序: l'0fRQc
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package org.rut.util.algorithm.support; Nn]|#lLP
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import org.rut.util.algorithm.SortUtil; Wz]ny3K[.
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/** N(@B3%H2/J
* @author treeroot #`(-Oj2hH
* @since 2006-2-2 MX\v2["FoV
* @version 1.0 zv}3Sl@
*/ 3}lT"K
public class HeapSort implements SortUtil.Sort{ :kz"Wya.
Q"2J2211
/* (non-Javadoc) 9pJk.Np0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M8HHyV[AmC
*/ E|K~WO]>o
public void sort(int[] data) { DcL;7 IT
MaxHeap h=new MaxHeap(); suP/I?4'@
h.init(data); u^Sa{Jk=
for(int i=0;i h.remove(); qe{:9
System.arraycopy(h.queue,1,data,0,data.length); |}Wm,J
} B(TE?[ #
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private static class MaxHeap{ oYn|>`+6:y
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void init(int[] data){ ;('(Yn7~
this.queue=new int[data.length+1]; \sZT[42
for(int i=0;i queue[++size]=data; ;#jE??E/:
fixUp(size); {i09e1
} R%\K<#^\
} ^<