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。 >t4<2|!(M
插入排序: UC!"1)~mt`
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package org.rut.util.algorithm.support; H4BuxM_r
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import org.rut.util.algorithm.SortUtil; Z
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/** XW*d\vDun
* @author treeroot 1(/rg
* @since 2006-2-2 ,1i l&
* @version 1.0 )Hqn
*/ P]4@|u;=6[
public class InsertSort implements SortUtil.Sort{
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/* (non-Javadoc) VKy3tW/_&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SKVQ !^o
*/ `'ak/%Krh
public void sort(int[] data) { $
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int temp; xS_tB)C
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;eP.B/N
} nDXy$f8
} Su k;##I
} |q 0iX2W
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} vcSb:('
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冒泡排序: NZuylQ)0
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package org.rut.util.algorithm.support; Ar`U/ %Cu
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import org.rut.util.algorithm.SortUtil; s+a#x(7{
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/** %D[6;PT
* @author treeroot w=ZK=@
* @since 2006-2-2 5-"aK~@+
* @version 1.0 Bacmrf
*/ n;r
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public class BubbleSort implements SortUtil.Sort{ HG)h,&nc-
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/* (non-Javadoc) 03 ;L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S,#UA%V"
*/ nk+9J#Gs
public void sort(int[] data) { .7n`]S/
int temp; O_Z
for(int i=0;i for(int j=data.length-1;j>i;j--){ n ZzGak
if(data[j] SortUtil.swap(data,j,j-1); =]0AZ
} u@kr;^m
} l8d }g
} dhi9=Co;
} <X]dR
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} 6"V86b0)h}
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选择排序: 'e7;^s
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package org.rut.util.algorithm.support; / KxZ+Ww>v
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import org.rut.util.algorithm.SortUtil; K[9{]$(Z
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/** G\
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* @author treeroot trL8oZ6
* @since 2006-2-2
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* @version 1.0 ^j7]> I
*/ kj!mgu#T
public class SelectionSort implements SortUtil.Sort { nPjN\Es6
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/* &=laZxe
* (non-Javadoc) UvVq# <-
* f/g-b]0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cx
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*/ [K `d?&
public void sort(int[] data) { ^vo]bq7
int temp; iIU>:)i
for (int i = 0; i < data.length; i++) { "ax"k0
int lowIndex = i; <*DP G\6Ma
for (int j = data.length - 1; j > i; j--) { !{ /AJb
if (data[j] < data[lowIndex]) { G4)X~.Fy
lowIndex = j; \yY2 mr
} r'& 6P-Vm
} P>ZIP*
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SortUtil.swap(data,i,lowIndex); >Q|S#(c
} =%9j8wHX
} 0/zgjT|fe
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} O-]^_LV`
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Shell排序: \rmge4`4
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package org.rut.util.algorithm.support; TRQH{O\O
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import org.rut.util.algorithm.SortUtil; )[5 .*g@
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/** ~9dAoILrl
* @author treeroot a9TKp$LP`
* @since 2006-2-2 go5l<:9
* @version 1.0 BY??X=
*/ n;*W#c
public class ShellSort implements SortUtil.Sort{ 3+iQct[
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/* (non-Javadoc) ,98`tB0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vaj-|&
*/ nh%Q";
public void sort(int[] data) { t}-rN5GO
for(int i=data.length/2;i>2;i/=2){ R?+:Js/
for(int j=0;j insertSort(data,j,i); H?j!f$sw
} K_LwYO3
} =s1Pf__<k
insertSort(data,0,1); #[NNb?`F
} JiCy77H
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/** !!UQ,yU
* @param data x|<89o
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* @param j @3I/57u<
* @param i \k*h& :$
*/ lcEin*Oc
private void insertSort(int[] data, int start, int inc) { Y,s@FGI2
int temp; f7j9'k
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2?\L#=<F
} </Ry4x^A
} g(F? qP_K
} >O}J*4A>+#
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} %Dm:|><V$b
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快速排序: K!_''Fg
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package org.rut.util.algorithm.support; W1p5F\ wt
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import org.rut.util.algorithm.SortUtil; %%f(R7n
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/** E>O1dPZcM
* @author treeroot PU^@BZ_m
* @since 2006-2-2 P(Ve'
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* @version 1.0 XpibI3:<
*/ xzTF| Z\
public class QuickSort implements SortUtil.Sort{ qn|~z@"
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/* (non-Javadoc) 9U~sRj=D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z;nUS,?om
*/ 41jlfKiOm
public void sort(int[] data) { 2K$#U|Qi
quickSort(data,0,data.length-1); dNgjM
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} APT/z0X>
private void quickSort(int[] data,int i,int j){ MuQ'L=i J
int pivotIndex=(i+j)/2; f/RDo4
file://swap 'K|tgsvgme
SortUtil.swap(data,pivotIndex,j); iZDZ/hohv
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int k=partition(data,i-1,j,data[j]); lT~A~O
SortUtil.swap(data,k,j);
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if((k-i)>1) quickSort(data,i,k-1); mL[Y{t#N
if((j-k)>1) quickSort(data,k+1,j); *IBCThj
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} F 5FzT^
/** YUsMq3^&
* @param data m kHcGB!~
* @param i %t<ba[9F
* @param j UV8K$n<
* @return W05>\Rl
*/ &[|P/gj#>
private int partition(int[] data, int l, int r,int pivot) { 5 ]v]^Y'?
do{ _4#&!b6
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LX_{39?<{
SortUtil.swap(data,l,r); ;(,1pi7|
} ZP^7`q)6
while(l SortUtil.swap(data,l,r); ;IX*4E'4s
return l; Z* L{;
} H{nYZOf/
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} }g|)+V\A
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改进后的快速排序: p7kH"j{xD
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package org.rut.util.algorithm.support; T&PLvyBL
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import org.rut.util.algorithm.SortUtil; {r2fIj~V
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/** a#G]5TZ
* @author treeroot Ps_q\R
* @since 2006-2-2 Z-B b,8
* @version 1.0 K{x FhdW
*/ ~^R?H S
public class ImprovedQuickSort implements SortUtil.Sort { U?d4 ^
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private static int MAX_STACK_SIZE=4096; &33.mdBH
private static int THRESHOLD=10; nlkQ'XGAI
/* (non-Javadoc) eq#x~O4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wz(D
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*/ ~M4@hG!
public void sort(int[] data) { uepL"%.@7|
int[] stack=new int[MAX_STACK_SIZE]; ]h6mJ{k
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int top=-1; K0Zq)<
int pivot; ;&%G)f
int pivotIndex,l,r; d$(>=gzBQ
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stack[++top]=0; x3++JG
stack[++top]=data.length-1; ';0NWFP
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while(top>0){ 9M$N>[og
int j=stack[top--]; O#5ll2?
int i=stack[top--]; ?dcR!-3
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pivotIndex=(i+j)/2; Y?>us
pivot=data[pivotIndex]; A,)G$yT\
]
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SortUtil.swap(data,pivotIndex,j); "Nn+Zw43
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file://partition G]- wN7G
l=i-1; MlM2(/ok
r=j; f;"6I
do{ 4fCg{
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -=A W. Zo
SortUtil.swap(data,l,r); ;dh8|ujh
} a|v}L,
while(l SortUtil.swap(data,l,r); }lzQMT
SortUtil.swap(data,l,j); hIr$^%
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if((l-i)>THRESHOLD){ K{s%h0
stack[++top]=i; 2i@t;h2E
stack[++top]=l-1; !&Z,ev
} U5z}i^8a
if((j-l)>THRESHOLD){ {)vue0
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stack[++top]=l+1; U8b1
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stack[++top]=j; <15POB
} %$l^C!qcY
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} 6^DsI
file://new InsertSort().sort(data); ;I+"MY7D
insertSort(data); b:iZ.I
} MK<VjpP0(
/** 9A4h?/
* @param data @-ma_0cZQ
*/ g#ZuRL
private void insertSort(int[] data) { !^|%Z
int temp; VnJ-nfA
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vsM] <t
} !j3V'XU#Zn
} yT>t[t60/S
} Q l$t
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} Pj!{j)-tS
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归并排序: ^!*?vHx:
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package org.rut.util.algorithm.support; (&6C,O~n^.
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import org.rut.util.algorithm.SortUtil; YW}1iT/H
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/** ,Dz2cR6
* @author treeroot x,Cc$C~YP
* @since 2006-2-2 l}DCK
* @version 1.0 IKK<D'6
*/ K+` Vn
public class MergeSort implements SortUtil.Sort{ 4nhe *ip
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/* (non-Javadoc) sJlX]\RLQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mF>CH]k3
*/ FNDLqf!j
public void sort(int[] data) { F$K-Q;r]<
int[] temp=new int[data.length]; Z w5\{Z0
mergeSort(data,temp,0,data.length-1); 9rb/h kX&
} .'SXRrn&:C
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private void mergeSort(int[] data,int[] temp,int l,int r){ ~PNO|]8j
int mid=(l+r)/2; ."Yub];H
if(l==r) return ; 4M8AYh2)
mergeSort(data,temp,l,mid); 16\U'<
mergeSort(data,temp,mid+1,r); vII8>x%*
for(int i=l;i<=r;i++){ RZfC?
temp=data; 1>*]jj}
} >5Zpx8W
int i1=l; ~^.&nph
int i2=mid+1; QD:0iD?
for(int cur=l;cur<=r;cur++){ xLZQ\2q
if(i1==mid+1) lxK_+fj
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data[cur]=temp[i2++]; g[;iVX^1&
else if(i2>r) \2<2&=h?
data[cur]=temp[i1++]; ISr~JQr
else if(temp[i1] data[cur]=temp[i1++]; r1FE$R~C=
else 5Ag>,>kJ6
data[cur]=temp[i2++]; Xl6)&
} 4[3T%jA
} @2_s;!K
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} $Yz &x%Lb
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改进后的归并排序: kXC.rgal
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package org.rut.util.algorithm.support; b,a\`%m}
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import org.rut.util.algorithm.SortUtil; yT&