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。 !u]1dxa
插入排序: WF\)fc#;_o
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package org.rut.util.algorithm.support; KeNL0_Pw
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import org.rut.util.algorithm.SortUtil; Dk5Zh+^
/** %e@HZ"V
* @author treeroot |!F5.%PY
* @since 2006-2-2 A?G^\I~v
* @version 1.0 !yhh8p3
*/
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public class InsertSort implements SortUtil.Sort{ A 8 vbQ
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/* (non-Javadoc) !a~`Bs$'jr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i%6;
*/ SIKOFs
public void sort(int[] data) { kapC%/6"
int temp; z%/N!RLW
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); smm]6
} ]!IVz)<E&
} 1@gg uRF:
} 1EyL#;k
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} `EtS!zD~b
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冒泡排序: #6!5 2
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package org.rut.util.algorithm.support; F_bF
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import org.rut.util.algorithm.SortUtil; ,<A$h3*
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/** !d&C>7nb
* @author treeroot .SWt3|Pi5
* @since 2006-2-2 2y%,p{="
* @version 1.0 mYc.x
*/ #Oha(mRY
public class BubbleSort implements SortUtil.Sort{ )z8!f}:De=
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/* (non-Javadoc) KLX/O1B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Z`$n8
*/ ~8m=1)A{(
public void sort(int[] data) { jLJ1u/l>;
int temp; Jxqh)l
for(int i=0;i for(int j=data.length-1;j>i;j--){ IG3,XW
if(data[j] SortUtil.swap(data,j,j-1); $x6$*K(F
} %AN/>\#p
} r&Ca"dI
} ]qB:PtX
} *GUAO){'
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} bZx!0>h
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选择排序: *H[Iq!@
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package org.rut.util.algorithm.support; VxzkQ}o
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import org.rut.util.algorithm.SortUtil; -TZ p
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/** }KD;0t4
* @author treeroot StI1){Wf
* @since 2006-2-2 2m>-dqg
* @version 1.0 l6kmS
*/ AfC>Q!-w
public class SelectionSort implements SortUtil.Sort { .qA{x bu
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/* % },Pe
* (non-Javadoc) B4XZko(
* gKg-O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CB~Q%QLG
*/ *MI*Rz?4
public void sort(int[] data) { kbPE "urR
int temp; 7a=S
for (int i = 0; i < data.length; i++) { 4Z*U}w)
int lowIndex = i; `Bn=?9
for (int j = data.length - 1; j > i; j--) { ,^8 MB.
if (data[j] < data[lowIndex]) { NU(AEfF
lowIndex = j; BGr.yEy
} "g+z !4b#
} @u._"/K
SortUtil.swap(data,i,lowIndex); *1@:'rJ
} { BEo &
} iBudmT8
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}
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Shell排序: ?r_l8
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package org.rut.util.algorithm.support; =e?$ M
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import org.rut.util.algorithm.SortUtil; 9%sM*[A
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/** 0Aa`p3.)
* @author treeroot YK{a
* @since 2006-2-2 abxDB
* @version 1.0 KLC{7"6e)
*/ TzBzEiANn
public class ShellSort implements SortUtil.Sort{ 2l5KJlfj>k
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/* (non-Javadoc) \M]-bw`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Y{D^\},
*/ *V(Fn-6(
public void sort(int[] data) { (qwdQMj`
for(int i=data.length/2;i>2;i/=2){ 6b~28
for(int j=0;j insertSort(data,j,i); <:8,niKtw
} 6D;^uM2N
} oPKXZU(c
insertSort(data,0,1); -RJE6~>'\
} &Np9kIMCB
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/** %i)B*9k
* @param data 4e9q`~sO
* @param j ~2u\
* @param i buk=p-oi
*/ l2hG$idC
private void insertSort(int[] data, int start, int inc) { `:M^8SYrL
int temp; "8V{5e!%j'
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); V,%L~dI
} djT5X
} *R% wUi
} N_75-S7Cm
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} ^%y`u1ab
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快速排序: .I$}KE)
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package org.rut.util.algorithm.support; ;HOPABWz)
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import org.rut.util.algorithm.SortUtil; dPjhq(8 zU
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/** Hoz5 6y
* @author treeroot 2k#t
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* @since 2006-2-2 P,bd'
* @version 1.0
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*/ ;+pOP |P=
public class QuickSort implements SortUtil.Sort{ OuIv e>8
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/* (non-Javadoc) !PUp>(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ELa ja87
*/ Gt/4F-Gn
public void sort(int[] data) { #k5#j4!b
quickSort(data,0,data.length-1); }fhHXGK.
} :6;e\UE
private void quickSort(int[] data,int i,int j){ ?a/n<V '
int pivotIndex=(i+j)/2; UEz i*"-v2
file://swap !d9AG|
SortUtil.swap(data,pivotIndex,j); 9>,Qgp,w
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int k=partition(data,i-1,j,data[j]); u@FsLHn
SortUtil.swap(data,k,j); ?)3jqQ.
if((k-i)>1) quickSort(data,i,k-1); "r.2]R3
if((j-k)>1) quickSort(data,k+1,j); o4=Yu7L
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} 1K|@h&@
/** g?qKNY
* @param data %Ny) ?B
* @param i \Mi#{0f+q
* @param j #I`ms$j%
* @return 'b:Ne,<
*/ ecH/Wz1
private int partition(int[] data, int l, int r,int pivot) { 3/M.0}e
do{ #-u [$TA
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %6 =\5>
SortUtil.swap(data,l,r); :,*eX' fH
} 1(`M~vFDK
while(l SortUtil.swap(data,l,r); hhRaJ
return l; &:?e &
} 9( VRq^Z1
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} :_d3//|
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改进后的快速排序: I6OSC&A`
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package org.rut.util.algorithm.support; )wf\F6jN
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import org.rut.util.algorithm.SortUtil; QV,E#(\5
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/** P0\eBS
* @author treeroot {^RG%
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* @since 2006-2-2 w4MwD?i]R
* @version 1.0 @eQld\h'
*/ VTh$a_P>
public class ImprovedQuickSort implements SortUtil.Sort { 5A_4\YpDR
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private static int MAX_STACK_SIZE=4096; ?=|kC*$/G
private static int THRESHOLD=10; -Fwh3F4g
/* (non-Javadoc) ?J|4l[x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'm1. X-$V
*/ /! ^P)yU,
public void sort(int[] data) { ~mILA->F
int[] stack=new int[MAX_STACK_SIZE]; _C+DB A
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int top=-1; -2NwF4VL
int pivot; h$h]%y
int pivotIndex,l,r; {},;-%xE
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stack[++top]=0; Q(\ wx
stack[++top]=data.length-1; $@87?Ab
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while(top>0){ -ID!pT vW
int j=stack[top--];
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int i=stack[top--]; }]h\/,
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pivotIndex=(i+j)/2; *)PG-$6X&
pivot=data[pivotIndex]; `facFt[\
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SortUtil.swap(data,pivotIndex,j); aV|k}H{wt
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file://partition |>sv8/!
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r=j; )W9_qmYd"
do{ /| GH0L
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1~qm+nET\
SortUtil.swap(data,l,r); d/B*
} BRtXf0~&p
while(l SortUtil.swap(data,l,r); *h,3}\
SortUtil.swap(data,l,j); Dsb(CoWw
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if((l-i)>THRESHOLD){ w#{l4{X|
stack[++top]=i; 6D*chvNA;
stack[++top]=l-1; R@ QQNYU.D
} :_c*m@=z(
if((j-l)>THRESHOLD){ 0!IPcZjY7
stack[++top]=l+1; |a(Q4 e/,
stack[++top]=j; ]GS~i+ =M
} Es:6
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} !"(u_dFw
file://new InsertSort().sort(data); 8?Wgawx
insertSort(data); |4xo4%BQ>
} 4hNwKe"Ki
/** aiR5/
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* @param data .wri5
*/ 9[f%;WaS
private void insertSort(int[] data) { o_:Qk;t
int temp; 6<76O~hNZ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0o;~~\fq.
} 9%TT>2#
} QE6El'S
} |B|@GF?:
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} {*__B} ,N
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归并排序: ruHrv"29
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package org.rut.util.algorithm.support; Z3n~&!
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import org.rut.util.algorithm.SortUtil; f#mx:Q.7I
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/** ^+a
* @author treeroot (.
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* @since 2006-2-2 Gx;xj0-"
* @version 1.0 B$DZ]/<
*/ =WjJN Q
public class MergeSort implements SortUtil.Sort{ 5l&j