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。 TJ+,G4z
插入排序: k@Mt8Ln
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package org.rut.util.algorithm.support; =PAsyj
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import org.rut.util.algorithm.SortUtil; W`g zMx
/** -v &
* @author treeroot |@Sj:^cJD
* @since 2006-2-2 :=e"D;5
* @version 1.0 ZMGthI}~-
*/ sMNhD/bb
public class InsertSort implements SortUtil.Sort{ E9~}%&
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/* (non-Javadoc) l,@rB+u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hyVBQhk
*/ %pBc]n@_
public void sort(int[] data) { 4ZCD@C
int temp; 45U!\mG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ? uu, w
} V8-*dE
} 'wd&O03&
} ~Hb2-V
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} @;`d\lQ
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冒泡排序: .Hm1ispq
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package org.rut.util.algorithm.support; }[b3$WZ
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import org.rut.util.algorithm.SortUtil; 6`V~cVu
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/** g\A kf
* @author treeroot SK t&BnW
* @since 2006-2-2 s_4y^w]aX
* @version 1.0 E:ti]$$
*/ Ck>{7Gw
public class BubbleSort implements SortUtil.Sort{ _0h)O
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/* (non-Javadoc) c$b~?Mx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %[WOQ.Sh
*/ Y0xn}:%K
public void sort(int[] data) { SI9PgC
int temp; ?G<.W[3
for(int i=0;i for(int j=data.length-1;j>i;j--){ 49-wFF
if(data[j] SortUtil.swap(data,j,j-1); N-YCOSUu
} ='Fh^]*5
} "a=dx|
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} 6S&OE k
} e!oL!Zg
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} |"i"8~/@<
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选择排序: rq![a};~
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package org.rut.util.algorithm.support; UoOxGo
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import org.rut.util.algorithm.SortUtil; EWK?vs
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/** &h'NC%"v
* @author treeroot M~Ph/
* @since 2006-2-2 5 nS}h76mZ
* @version 1.0 P]<15l
*/ DT[WO_=
public class SelectionSort implements SortUtil.Sort { o|Kd\<rY
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/* "] [u
* (non-Javadoc) i<-a-Z+^
* 4;V;8a\A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NEW0dF&)
*/ O6$n VpD3
public void sort(int[] data) { t-?#x
int temp; w"
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for (int i = 0; i < data.length; i++) { p@[n(?duC.
int lowIndex = i; +Y"HbNz
for (int j = data.length - 1; j > i; j--) { K8 Hj)$E61
if (data[j] < data[lowIndex]) { #8r1<`']!
lowIndex = j; pIl[)%F
} ]6@6g>f?
} a3c43!J?M
SortUtil.swap(data,i,lowIndex); gVI T6"/
} ^a?g~G
} X]c>clk,
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} j5MUP&/g3
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Shell排序: sfzDE&>'
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package org.rut.util.algorithm.support; EnP>
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import org.rut.util.algorithm.SortUtil; jQ3&4>g j
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/** 9=.7[-6i9
* @author treeroot *QA{xvT
* @since 2006-2-2 9{CajtN
* @version 1.0 Ib2n Bg>j
*/ bA\(oD+:
public class ShellSort implements SortUtil.Sort{ xwa@h}\#
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/* (non-Javadoc) u-@;Q<v$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NS){D7T
*/ z C7 b
public void sort(int[] data) { vf?Xt
for(int i=data.length/2;i>2;i/=2){ GsU.Lkf
for(int j=0;j insertSort(data,j,i); bwe)_<c
} ', P_a,\
} 9;fs'R
insertSort(data,0,1); TF~cDn
} &/8B(0<
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/** <{IeCir
* @param data TFDzTD
* @param j jKb4d9aX
* @param i eqk.+~^
*/ FB2{qG3
private void insertSort(int[] data, int start, int inc) { Wn&9R
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int temp; ZwMd 22
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3u/ GrsF
} )0zg1z
} (o4':/es
} t@!A1Vr@
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} IAMtMO^L
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快速排序:
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package org.rut.util.algorithm.support; C=(~[ Y
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import org.rut.util.algorithm.SortUtil; k,LaFe`W
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/** TecWv@.
* @author treeroot ?KG4Z
* @since 2006-2-2 ~(]'ah,
* @version 1.0 A u"BDP
*/ 4@=[rZb9
public class QuickSort implements SortUtil.Sort{ P5__[aTD
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/* (non-Javadoc) x\ 8gb#8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) th}&|Y)T2
*/ 8=u88?Bh
public void sort(int[] data) { 2/ejU,S
quickSort(data,0,data.length-1); |y&vMx~t
} 2]V8-
private void quickSort(int[] data,int i,int j){ X0 ]Se(
int pivotIndex=(i+j)/2; WF-^pfRq~
file://swap Kh{_BdN
SortUtil.swap(data,pivotIndex,j); (5kL6d2
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int k=partition(data,i-1,j,data[j]); kW&zkE{
SortUtil.swap(data,k,j); ~!6
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if((k-i)>1) quickSort(data,i,k-1); r{wf;5d(
if((j-k)>1) quickSort(data,k+1,j); `KUL4) g~
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} GW2v&Ul7(
/** %'eaW
* @param data jvhD_L/
* @param i Tsocc5gWZ*
* @param j Y4N)yMSl"
* @return ekd;sEO
*/ tG[v@-O
private int partition(int[] data, int l, int r,int pivot) { !}q@O-}j
do{ AmK g;9LS
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); k#G+<7c<
SortUtil.swap(data,l,r); $]MOAj"LH
} U04)XfO;]
while(l SortUtil.swap(data,l,r); !,{-q)'D
return l; vj"['6Xa
} KN~Rep cz@
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} xP &@|Ag
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改进后的快速排序: Hk?E0.
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package org.rut.util.algorithm.support; kfq<M7y
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import org.rut.util.algorithm.SortUtil; syk,e4:oA
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/** 4F+G;'JV
* @author treeroot ~R7{gCqdr
* @since 2006-2-2 $E^*^({
* @version 1.0 Ni#y=cb
*/ Vk%W4P"l
public class ImprovedQuickSort implements SortUtil.Sort { LG'1^W{a
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private static int MAX_STACK_SIZE=4096; /UtSZ(
private static int THRESHOLD=10; ]0g1P-&,U
/* (non-Javadoc) N@8tf@BT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w[J.?v&^
*/
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public void sort(int[] data) { #-/_J?
int[] stack=new int[MAX_STACK_SIZE]; 4Y d$RP
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int top=-1; (qDJgf4fgn
int pivot; CFeAKjG
int pivotIndex,l,r; *2Q x69`
Rk}=SB-
stack[++top]=0; `tm(3pJ
stack[++top]=data.length-1; Y^gIvX
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while(top>0){ q,]57s
int j=stack[top--]; MT<3OKo?:
int i=stack[top--]; 0p=
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pivotIndex=(i+j)/2;
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pivot=data[pivotIndex]; EC?U#!kv
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SortUtil.swap(data,pivotIndex,j); bjFND]p?w
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file://partition )T@+"Pw8t
l=i-1; \p\rPfY{>
r=j; g$mqAz<
do{ %Gm4,+8P3o
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); WiFZY*iu5
SortUtil.swap(data,l,r); h|ja67VG
} @@|H8mP}H
while(l SortUtil.swap(data,l,r); kaV Ye)~
SortUtil.swap(data,l,j); HK<oNr.d52
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if((l-i)>THRESHOLD){ B9oB5E
stack[++top]=i; >Yfo $S_
stack[++top]=l-1; YrTjHIn~w
} b<KKF '
if((j-l)>THRESHOLD){ osTin*T.
stack[++top]=l+1; PAu/iqCH
stack[++top]=j; #b{;)C fL
} g")pvK[e
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} /
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file://new InsertSort().sort(data); ^7C,GaDsn
insertSort(data); h3;RVtS
} ,tuZ_"?M
/** ; T WYO
* @param data ;^P0+d^5C
*/ %xt\|Lt
private void insertSort(int[] data) { #K/#-S
int temp; LY!.u?D`P
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zxvowM
} (rSBzM]H
} 6d YUMqQ
} =Lr#
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} r'u[>uY
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归并排序: VB{G%!}
5va ;Ol4
package org.rut.util.algorithm.support; =eG:Scoug?
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import org.rut.util.algorithm.SortUtil; 6}PoBhgSg-
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/** 8wA'a'V.
* @author treeroot sg,9{R ^
* @since 2006-2-2 2graLJ?9Z
* @version 1.0 9_pOV%Qs
*/ ~ph>?xuw
public class MergeSort implements SortUtil.Sort{ ^os|yRzV*M
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/* (non-Javadoc) +#ANc;2g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;,:w%.
*/ LzkwgcR
public void sort(int[] data) { j~Ubpf
int[] temp=new int[data.length]; Mhg_z.Z
mergeSort(data,temp,0,data.length-1); L@6T~
} vm "dE4W=
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private void mergeSort(int[] data,int[] temp,int l,int r){ 7(KVA1P66
int mid=(l+r)/2; "_e/O&-cH
if(l==r) return ;
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mergeSort(data,temp,l,mid); ,?s:s&4
mergeSort(data,temp,mid+1,r); >"+bL6#
for(int i=l;i<=r;i++){ 44cy_
temp=data; TzK[:o
} h`/1JjP
int i1=l; woR }=\K
int i2=mid+1; T13Jn o
for(int cur=l;cur<=r;cur++){ .R{P%r
if(i1==mid+1) >zB0+l
data[cur]=temp[i2++]; I ?i,21:5
else if(i2>r) JV9Ft,xk
data[cur]=temp[i1++]; X.!|#FWb+
else if(temp[i1] data[cur]=temp[i1++]; e5fzV.' 5
else z c,Q
data[cur]=temp[i2++]; lDhuL;9e
} }K\m.+%=d
} Iw) 'Yyg
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} f}F
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改进后的归并排序: <3c|S_|L*m
2:& [r*
package org.rut.util.algorithm.support; 2u'h,on?
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import org.rut.util.algorithm.SortUtil; 4';(\42
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/** C\p _
* @author treeroot }z8HS<
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* @since 2006-2-2 `=cOTn52
* @version 1.0 m;KD@E!
*/ Smlf9h&
public class ImprovedMergeSort implements SortUtil.Sort { 0^rDf
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private static final int THRESHOLD = 10; t@\op}Z-M
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/* Qape DU;
* (non-Javadoc) G[5z3
* +cnBEv~y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RP4P"m(
*/ I<ta2<h
public void sort(int[] data) { AVbGJ+
int[] temp=new int[data.length]; [boB4>.
mergeSort(data,temp,0,data.length-1); kI>PaZ`i)
} ThSB\
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