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。 /IlO
插入排序: =QIu3%&
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package org.rut.util.algorithm.support; cd`P'GDF
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import org.rut.util.algorithm.SortUtil; Tv `&
/** vuZ'Wo:S{
* @author treeroot ^A=2#j~H\
* @since 2006-2-2 @YVla!5O@
* @version 1.0 |tC= j.
*/ Nxt`5kSx=
public class InsertSort implements SortUtil.Sort{ nchpD@'t
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/* (non-Javadoc) Tkn8Wj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /z(d!0_q|v
*/ 2*V]jO
public void sort(int[] data) { 8K@e8p( y
int temp; W.59Al'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @vL0gzE?nB
} h*Mt{A&'.&
} 3v&Shb?xb;
} YV'B*arIA
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} :UX8^+bfZ
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冒泡排序: 'UTMEN&
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package org.rut.util.algorithm.support; NZlCn:"
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import org.rut.util.algorithm.SortUtil; ERIF#EY
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/** Jx Kd
* @author treeroot VA`VDUG,
* @since 2006-2-2 6W~JM^F
* @version 1.0 k2.\1}\
*/ B,` `2\B
public class BubbleSort implements SortUtil.Sort{ HdTB[(
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/* (non-Javadoc) L>lxkq8!Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NC YOY
*/ I|2dV9y
public void sort(int[] data) { >wR)p\UEb
int temp; }*!_M3O
for(int i=0;i for(int j=data.length-1;j>i;j--){ =>&~p\Aw
if(data[j] SortUtil.swap(data,j,j-1); JUJrtKS
} 'R#MH
} UMMGT6s,E8
} l*Fp}d.
} e@5w?QzW
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选择排序: &g=6K&a$a
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package org.rut.util.algorithm.support; ?B`c<H"
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import org.rut.util.algorithm.SortUtil; bU}l*"
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/** ^`RMf5i1m
* @author treeroot f:AfM f>m
* @since 2006-2-2
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* @version 1.0 ?5EMDawt
*/ B- |C%~fe
public class SelectionSort implements SortUtil.Sort { )Ofwfypc
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/* V<U9Pj^?^
* (non-Javadoc) \ >#y*W<
* Y~I0\8s-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *8/cd0
*/ >#`{(^
public void sort(int[] data) { 1C/Vwf:@
int temp; s-F3(mc(
for (int i = 0; i < data.length; i++) { ']H*f2y
int lowIndex = i; KB{/L5
for (int j = data.length - 1; j > i; j--) { a,:Nlr3
if (data[j] < data[lowIndex]) { ++!0r['+>
lowIndex = j; 3g0v,7,Zv
} R#ya9GN{
} LX(`@-<DH
SortUtil.swap(data,i,lowIndex); y+7A?"s)
} n0uL^{B
} N*KM6j
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} S@ItgG?X
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Shell排序: !1<>][F
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package org.rut.util.algorithm.support; r90R~'5x9
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import org.rut.util.algorithm.SortUtil; = d !YM6G
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/** cdg&)
* @author treeroot n,p \~Tu,
* @since 2006-2-2 ,!98VJmr
* @version 1.0 )r
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*/ i>=y3x"
public class ShellSort implements SortUtil.Sort{ c}2"X,
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/* (non-Javadoc) Hc\oR(L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P_Exh]P
*/ 1+ V<-I@{
public void sort(int[] data) { sw,p6T[
for(int i=data.length/2;i>2;i/=2){ ?cD_\~
for(int j=0;j insertSort(data,j,i); "gXvnl
} l YjPrA]TC
} t k+t3+
insertSort(data,0,1); *C(q{|f
} {<2q
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/** &G7@lz@sK+
* @param data 8qs8QK
* @param j 6/|"y
* @param i 2VkA!o4nP
*/ U5j0i]
private void insertSort(int[] data, int start, int inc) { 4Gsq)i17j
int temp; )umW-A
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A~'p~@L
} 5:l"*
} 2/l4,x
} TA+/35^?
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} %&4\'lE
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快速排序: w1t0X{
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package org.rut.util.algorithm.support; 1i$OcN?x%
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import org.rut.util.algorithm.SortUtil; W u693<
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/** &3Mps[u:h
* @author treeroot bt?)ryu
* @since 2006-2-2 GC~N$!*
* @version 1.0 _2Fa.gi
*/ "QV1G'
public class QuickSort implements SortUtil.Sort{ GI#TMFz3
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/* (non-Javadoc) '8fh(`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y^uYc}
*/ F2["Ak NM
public void sort(int[] data) { :n(!,
quickSort(data,0,data.length-1); g?!;04
} 7:&a,nU
private void quickSort(int[] data,int i,int j){ c# WIB 4
int pivotIndex=(i+j)/2; 8\8%FSrc
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SortUtil.swap(data,pivotIndex,j); 2N_9S?a3sK
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int k=partition(data,i-1,j,data[j]); R$VeD1n@
SortUtil.swap(data,k,j); " qrL:,
if((k-i)>1) quickSort(data,i,k-1); F6#U31Q=
if((j-k)>1) quickSort(data,k+1,j); .@]M'S^1
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} QjwCY=PK!
/** Z(fhH..T`
* @param data XY`2>7
* @param i }sS1p6z
* @param j t8FgQ)tk
* @return 5V/CYcO
*/ auQfWO[ u
private int partition(int[] data, int l, int r,int pivot) { )ur&Mnmm
do{ "Q<*H<e
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); MEn#MT/Cz
SortUtil.swap(data,l,r); T2MX_rt#D
} k~b8=$
while(l SortUtil.swap(data,l,r); -2Azpeh
return l; MOW {g\{\
} R|H_F#eVn}
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} 4i o02qd
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改进后的快速排序: Y^f12%
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package org.rut.util.algorithm.support; \M`fkR,,'
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import org.rut.util.algorithm.SortUtil; I3V>VLv
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/** Af"vSL
* @author treeroot 3 eFBe2
* @since 2006-2-2 o<-+y\J8K
* @version 1.0 \i#0:3s.
*/ )WFSUZ~
public class ImprovedQuickSort implements SortUtil.Sort { "i_}\p.,X
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private static int MAX_STACK_SIZE=4096; Sm%MoFf
private static int THRESHOLD=10; \;A\ vQ[
/* (non-Javadoc) %7?v='s=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P&Q 5ZQb
*/ XJ;JDch
public void sort(int[] data) { [Pt5c6 L:
int[] stack=new int[MAX_STACK_SIZE]; BDg6ZI<n
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int top=-1; =>CrZ23B"
int pivot; rXz,<^Hmj
int pivotIndex,l,r; Do|`wpR
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stack[++top]=0; o;JBe"1
stack[++top]=data.length-1; `v)-v<
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while(top>0){ \(LHcvbb
int j=stack[top--]; WiL~b
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int i=stack[top--]; [J+K4o8L<A
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pivotIndex=(i+j)/2; y o[!q|z
pivot=data[pivotIndex]; \?fl%r2
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SortUtil.swap(data,pivotIndex,j); W3K"5E0ck
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do{ s/Wg^(&M
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fK^FD&sF
SortUtil.swap(data,l,r); zT~ GBC-IX
} DD'<zL[
while(l SortUtil.swap(data,l,r); i4!n Oyk
SortUtil.swap(data,l,j); M)EUR0>8
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if((l-i)>THRESHOLD){ Li=l/
stack[++top]=i; e= "/oo
stack[++top]=l-1; miHW1h[=
} OG 5n9sx
if((j-l)>THRESHOLD){ qg6Hk:^r
stack[++top]=l+1; g)&-S3\
stack[++top]=j; jO:<"l^+u
} `U`Z9q5-
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} 4b3p,$BWS
file://new InsertSort().sort(data); 7X}_yMxc
insertSort(data); eB$v'9S8/
} 2 >xV&