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。 6V
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插入排序: HY4X;^hF
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package org.rut.util.algorithm.support; $z)r(N$
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import org.rut.util.algorithm.SortUtil; Ph'*s{
/** @2yi%_]h
* @author treeroot zB kS1qMn
* @since 2006-2-2 |[7xTD
* @version 1.0 {L$ ]NQdz
*/ >jD,%yG
public class InsertSort implements SortUtil.Sort{ Z?kLAhy!
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/* (non-Javadoc) -{dsl|Dl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \BOZhXfl'
*/ nw){}g
public void sort(int[] data) { 7{e0^V,\k
int temp; dlsVE~_G
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rLw3\>y
} F:"<4hiA"
} B`3RyM"J @
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冒泡排序: n>T1KC%
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package org.rut.util.algorithm.support; Yj99[
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import org.rut.util.algorithm.SortUtil; ?&W1lYY
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/** }YH@T]O}
* @author treeroot 6Y<'Lyg/
* @since 2006-2-2 0vbiq
* @version 1.0 28>PmH]7
*/ )xYv$6=
public class BubbleSort implements SortUtil.Sort{ ij i<+oul
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/* (non-Javadoc) *NzHY;e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ICwhqH&
*/ G?e"A0,
public void sort(int[] data) { 9N5ptdP.d
int temp; bkk1_X
for(int i=0;i for(int j=data.length-1;j>i;j--){ x-O9|%aRJ
if(data[j] SortUtil.swap(data,j,j-1); R?@F%J;tx
} =@$G3DM
} `vs=
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} 04>dxw)8
} 6) {jHnk)
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} MN1
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选择排序: )f(.{M
&Ohm]g8{2
package org.rut.util.algorithm.support; @*SgeLeL
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import org.rut.util.algorithm.SortUtil; rF C 6"_
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/** q2v:lSFY
* @author treeroot <X9 T}g
* @since 2006-2-2 q0|u vt"
* @version 1.0 {B^V_TX2
*/ X :2%U
public class SelectionSort implements SortUtil.Sort { =*EIe z*.x
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/* g3[Zh=+]E
* (non-Javadoc) jSa9UD
* Uawf,57v<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~P&Brn"=Rs
*/ EX^}#|e*h
public void sort(int[] data) {
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int temp; %JmRJpCvR
for (int i = 0; i < data.length; i++) { c`:hEQs
int lowIndex = i; yh9fHN)F
for (int j = data.length - 1; j > i; j--) { I,4t;4;Zk
if (data[j] < data[lowIndex]) { &' ,A2iG
lowIndex = j; ;A^0="x&
} huh-S ,M
} 0Y rdu,c
SortUtil.swap(data,i,lowIndex); d&S4`\g?8
} b~F(2[o
} Z9cg,#(D
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} dD6I @N)X
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Shell排序: zJ;K4)"j
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package org.rut.util.algorithm.support; =+um:*a.
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import org.rut.util.algorithm.SortUtil; !N5+.E0j
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/** zqEMR>px
* @author treeroot bkmW[w:M
* @since 2006-2-2 At5:X*vD
* @version 1.0 d~L`*"/)[
*/ (s?`*i:2
public class ShellSort implements SortUtil.Sort{ }gw
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/* (non-Javadoc) /m,0H)w1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *SkUkqP9z
*/ $YDZtS&h
public void sort(int[] data) { x'Z<
for(int i=data.length/2;i>2;i/=2){ wn*z*
for(int j=0;j insertSort(data,j,i); )k5lA=(Yr+
} Sz0M8fYT]
} i4TU}.h8
insertSort(data,0,1); jF}zv
} j7;v'eA`;7
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/** z-G|EAON"/
* @param data 6T6 S9A*nT
* @param j HgG-r&r!2
* @param i _E5%Px5>L
*/ %
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private void insertSort(int[] data, int start, int inc) { '"}|'J
int temp; )c@I|L
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9GnNL I{
} 5qco4@8
} 9IL#\:d1
} W>b(hVBE
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} )>LQ{X.
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快速排序: 'e-Nt&;
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package org.rut.util.algorithm.support; W38My j!
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import org.rut.util.algorithm.SortUtil; ]B>Y
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/** *BVkviqxz
* @author treeroot Ah)OyO6
* @since 2006-2-2 &Pt|
* @version 1.0 =SLP}bP{:
*/ /vPh_1
public class QuickSort implements SortUtil.Sort{ '#<?QE!d2
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/* (non-Javadoc) k]x64hgm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vn1k C
*/ Ns9cx
public void sort(int[] data) { zW%-Z6%D
quickSort(data,0,data.length-1); ?PWD[mQE\
} 'j$iS W&
private void quickSort(int[] data,int i,int j){ s)yEVh
int pivotIndex=(i+j)/2; V_U$JKJ1=
file://swap Z~g~,q
SortUtil.swap(data,pivotIndex,j); 5(>m=ef"
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int k=partition(data,i-1,j,data[j]); DVD}
SortUtil.swap(data,k,j); IDzP<u8v
if((k-i)>1) quickSort(data,i,k-1); mBc;^8I?23
if((j-k)>1) quickSort(data,k+1,j); sCaw"{5qc
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} %'`Dd
/** mT@UQCG
* @param data 133lIX+(k
* @param i MLmc]nL=
* @param j }K;@$B6,@
* @return xN2M|E]
*/ %xLziF
private int partition(int[] data, int l, int r,int pivot) { AO;+XP=
do{ *%ZfE,bu8<
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9`.b
SortUtil.swap(data,l,r); ?C.C?h6F5B
} "eI-Y`O,
while(l SortUtil.swap(data,l,r); bEbO){Fe
return l; ]G&?e9OA
} n5UcivyX
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} 8c+i+gp!
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改进后的快速排序: ?Pl>sCFm~
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package org.rut.util.algorithm.support; {FQ
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import org.rut.util.algorithm.SortUtil; ErB6fl
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/** 6$SsdT|8B
* @author treeroot JS&l
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* @since 2006-2-2 4s`*o/it
* @version 1.0 ]|Vm!Q
*/ ?xK9
public class ImprovedQuickSort implements SortUtil.Sort { kf>'AbN
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private static int MAX_STACK_SIZE=4096; 6JRee[
private static int THRESHOLD=10; `mw@"
/* (non-Javadoc) 28X)s!W'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M%&`&{
*/ M P0ww$(
public void sort(int[] data) { f=~@e#U
int[] stack=new int[MAX_STACK_SIZE]; Vize0fsD
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int top=-1; @H&Aj..
int pivot; L=Dx$#|
int pivotIndex,l,r; p4{?Rhb6
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stack[++top]=0; XZp(Po:H
stack[++top]=data.length-1; n{4&('NRFP
6EX:qp^`
while(top>0){ %l:%c
int j=stack[top--]; n6Q 3X
int i=stack[top--]; #J2856bzS
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pivotIndex=(i+j)/2; F;q I^{m2
pivot=data[pivotIndex]; *#UDMoz<
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SortUtil.swap(data,pivotIndex,j); ynP^|Ou
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file://partition 9=3V}]^M
l=i-1; D\*raQ`n
r=j; ,8$;|#d
do{ iy$]9Wf6=@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5r
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SortUtil.swap(data,l,r); mhlJzGr*q
} |":^3
while(l SortUtil.swap(data,l,r); w`#lLl
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SortUtil.swap(data,l,j); OkzfQ
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if((l-i)>THRESHOLD){ 1/le%}mK
stack[++top]=i; 83TN6gW
stack[++top]=l-1; {'d?vm!r
} !(SaE'
if((j-l)>THRESHOLD){ h+Dg"j<[
stack[++top]=l+1; ,T&B.'cq
stack[++top]=j; ;Rwr5
} fWKv3S1dT
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} j/^0q90QO
file://new InsertSort().sort(data); !Rsx)
insertSort(data); \f{C2d/6j
} n$b/@hp$z
/** kTC6fNj[
* @param data rvr Ok
*/ C'5i>;
private void insertSort(int[] data) { UTs0=:+,t
int temp; IL>Gi`Y&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 39m#
} ~9'VP}\
} 0kC!v,
} \".3x
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} *;o=hM)Tp
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归并排序: =VY[m-q5
5RlJybN"o
package org.rut.util.algorithm.support; NO9Jre
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import org.rut.util.algorithm.SortUtil; /{qr~7k,oQ
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/** y4envjl0
* @author treeroot Ye1P5+W(
* @since 2006-2-2 yil{RfBEr_
* @version 1.0 4Q3Q.(
*/ Re.fS6y$>
public class MergeSort implements SortUtil.Sort{ p]pFZ";70
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/* (non-Javadoc) \6@}HFH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m'429E]\S
*/ ^s24f?3
public void sort(int[] data) { Grw_SVa^
int[] temp=new int[data.length]; {OQ sGyR?
mergeSort(data,temp,0,data.length-1); $1UN?(r
} rtUdL,Hx
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private void mergeSort(int[] data,int[] temp,int l,int r){ LU%g>?m.]
int mid=(l+r)/2; [x)BQX'
if(l==r) return ; !TG"AW
mergeSort(data,temp,l,mid); Y
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mergeSort(data,temp,mid+1,r); wBmbn=>#S
for(int i=l;i<=r;i++){ My5X%)T>P
temp=data; eL-92]]e
} [vIO
int i1=l; s]=kD
int i2=mid+1; 5Pv>`E2^
for(int cur=l;cur<=r;cur++){ b\;QR?16R
if(i1==mid+1) 9N
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data[cur]=temp[i2++]; I:Z38xz -[
else if(i2>r) Xv'64Nc!;
data[cur]=temp[i1++]; sb8SG_ c.
else if(temp[i1] data[cur]=temp[i1++]; @o>2:D1G
else %Cm4a49FNi
data[cur]=temp[i2++]; NP|U
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} i44KTC"sB
} SUvHLOA
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} 6:h!gY
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改进后的归并排序: vO"AJ`_
p%,JWZ[
package org.rut.util.algorithm.support; &uk?1Z#j
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import org.rut.util.algorithm.SortUtil; rKR<R(=!=
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/** <hS >L1ZSr
* @author treeroot \7Zk[)!FL
* @since 2006-2-2 YJr@4!j*
* @version 1.0 y+X%qTB
*/ hp[8.Z$7
public class ImprovedMergeSort implements SortUtil.Sort { @dO~0dF
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private static final int THRESHOLD = 10; JqFFI:Q5a
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/* >5XE*9
* (non-Javadoc) _D
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* VE{t]>*-u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /A{znE
*/ ]Ub?Wo7F?
public void sort(int[] data) { ="Dmfy7
int[] temp=new int[data.length]; Is%-r.i
mergeSort(data,temp,0,data.length-1); $'kIo*cZ
} [?]s((A~B
6``!DMDt/P
private void mergeSort(int[] data, int[] temp, int l, int r) { "z7.i{
int i, j, k; G$`/86A )
int mid = (l + r) / 2; _%"/I96'
if (l == r) LD#]"k
return; ~
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if ((mid - l) >= THRESHOLD) E+[K?W5
mergeSort(data, temp, l, mid); 1oodw!hW
else X@jml$;$
insertSort(data, l, mid - l + 1); Z
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if ((r - mid) > THRESHOLD) VxaJ[s3PQ&
mergeSort(data, temp, mid + 1, r); i wK,XnIR
else rN_\tulOF
insertSort(data, mid + 1, r - mid); QBDi;Xzb+
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for (i = l; i <= mid; i++) { CCQ<.iCU
temp = data; c1!h;(&
} -pyTzC$HO
for (j = 1; j <= r - mid; j++) { ~?S/0]?c
temp[r - j + 1] = data[j + mid]; vvdC.4O
} L?<V KT
int a = temp[l]; XG_lyx%:E
int b = temp[r]; y\V!OY@
for (i = l, j = r, k = l; k <= r; k++) { JZ80 |-c
if (a < b) { >`\~=ivrD
data[k] = temp[i++]; WVp14Z?k
a = temp; 6YYZ S2
} else { O`Nzn~),x
data[k] = temp[j--]; O z]iHe
b = temp[j]; +qDudGI
} I`zn#U'
} n$B=Vt,
} .k Gg}
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/** U(.Ln@sq
* @param data )0~zL} )?
* @param l '+5*ajP<
* @param i 3Sf<oYF
*/ `A3"*,|z
private void insertSort(int[] data, int start, int len) { PzNk: O
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); NKh"x&R
} E<D45C{DP
} >>F E?@
} 9;sebqC?
} @aWvN;v
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堆排序: @e3O=_m-
8v5cQ5Lc
package org.rut.util.algorithm.support; ##EMJi
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import org.rut.util.algorithm.SortUtil; ~UEft
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/** gb(a`
* @author treeroot 9}:%CpD^~I
* @since 2006-2-2 MG<F.u
* @version 1.0 |ILj}4ZA7
*/ yiWBIJ2Wu9
public class HeapSort implements SortUtil.Sort{ I?EtU/AD
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/* (non-Javadoc) R>BnUIu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [;
*/ n&pi
public void sort(int[] data) { Xg_M{t
MaxHeap h=new MaxHeap(); {OXKXRCa
h.init(data); vB
hpD
for(int i=0;i h.remove(); U4w^eWzP
System.arraycopy(h.queue,1,data,0,data.length); XFUlV;ek
} iqRk\yq<
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private static class MaxHeap{ /2Y t\=S=
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void init(int[] data){ 2g$PEwXe
this.queue=new int[data.length+1]; /xUTm=w7u
for(int i=0;i queue[++size]=data; xKi:
2
fixUp(size); @!1o +x
} ds}: t.3}6
} \7n ;c
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private int size=0; ]+@ @{?0
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private int[] queue; 7O',X Y
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public int get() { P-[6'mw`
return queue[1]; V+G.TI
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} C @3a/<6m
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public void remove() { =4+Wx8ZeW
SortUtil.swap(queue,1,size--); $Y&
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fixDown(1); 2uujA*
^
} (v+nn1,
file://fixdown I.As{0cc
private void fixDown(int k) { xn|M]E1)
int j; MKMWHGN
while ((j = k << 1) <= size) { BC.~wNz6
if (j < size %26amp;%26amp; queue[j] j++; A/:^l%y,GZ
if (queue[k]>queue[j]) file://不用交换 =]i[gs)B
break; %P@V7n
SortUtil.swap(queue,j,k); *|n-Hr
k = j; !:"$1kh1("
} WD.td
} hilgl<UF
private void fixUp(int k) { wyWe2d
while (k > 1) { /&1FgSARK
int j = k >> 1; k;BXt:jDq
if (queue[j]>queue[k]) Z'=:Bo{
break; b`:n i
SortUtil.swap(queue,j,k); OynQlQD/Eu
k = j; ($s%5|
} mcO/V-\5'
} .Y`;{)
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} ,,
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PiQsVk
} <KB V
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