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。 ;i/? fw[h
插入排序: k{hNv|:,
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package org.rut.util.algorithm.support; \[)SK`cwd
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import org.rut.util.algorithm.SortUtil; %""h:1/S
/** 1A#/70Mo
* @author treeroot ^|hVFM2
* @since 2006-2-2 SkCux
* @version 1.0 pp7
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*/ =w"Kkj>%oh
public class InsertSort implements SortUtil.Sort{ /;[x3}[
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/* (non-Javadoc) <%rm?;PBl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G$QN_h,}
*/ Ho[]03
public void sort(int[] data) { x%[NK[^&
int temp; hsYE&Np_Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .=d40m
} Je2&7uR0
} !#*#ji xo
} 0_Elxc
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冒泡排序: T(]*jaB
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package org.rut.util.algorithm.support; l%?4L/J)#
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import org.rut.util.algorithm.SortUtil; 4PkKL/E
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/** ^SsnCn-e
* @author treeroot x
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* @since 2006-2-2 G K3T w
* @version 1.0 kg7bZ
*/ x(4"!#
public class BubbleSort implements SortUtil.Sort{ V[WLS ?-)
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/* (non-Javadoc) utl-#Wwt/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ._<,
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*/ +uTl
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public void sort(int[] data) { bKzG5|Qu
int temp; D&G?Klq
for(int i=0;i for(int j=data.length-1;j>i;j--){ #Ak|p#7 ^
if(data[j] SortUtil.swap(data,j,j-1); 1wdc4>
} ' u;Zw%O(J
} qdmAkYUC
} yJ ljCu)f
} SyT{k\[
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} 1w7XM0SHcn
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选择排序: "M\rO!f:
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package org.rut.util.algorithm.support; ".N{v1
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import org.rut.util.algorithm.SortUtil; Ht/#d6cQ
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/** #a2Z.a<V
* @author treeroot 3hje
* @since 2006-2-2 Gr)G-zE
* @version 1.0 \&ZEIAe
*/ ka ;=%*7T
public class SelectionSort implements SortUtil.Sort { !>=lah$&
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/* q8;MPXSG3
* (non-Javadoc) ^q0`eS
* 4sRg+mMI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F7nwVDc*
*/ }A;YM1^$
public void sort(int[] data) { ;3xi.^=B
int temp; =1(7T.t
for (int i = 0; i < data.length; i++) { ) j&khHD
int lowIndex = i; v^F00@2I
for (int j = data.length - 1; j > i; j--) { V[]Pya|s+
if (data[j] < data[lowIndex]) { 8O60pB;4
lowIndex = j; E?bv<L,"
} oSf`F1;)HQ
} *PB /I4>{
SortUtil.swap(data,i,lowIndex); ],~[ ^0
} -1NR]#P'
} $<C",&
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} }~ N\A
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Shell排序: i gjn9p&_
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package org.rut.util.algorithm.support; @]8flb
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import org.rut.util.algorithm.SortUtil; b`j9}tZ
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/** yJO Jw o^
* @author treeroot $cwmfF2C
* @since 2006-2-2 !$ii*}
* @version 1.0 o"z;k3(i$7
*/ 7(
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public class ShellSort implements SortUtil.Sort{ hA1B C3
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/* (non-Javadoc) ^,vFxN--q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e{Vn{.i,5
*/ IMMsOl
public void sort(int[] data) { xfC$u`e=
for(int i=data.length/2;i>2;i/=2){ >.9V`m|
for(int j=0;j insertSort(data,j,i); L;L_$hu)
} }R5EuR m\
} `d4xX@
insertSort(data,0,1); Ui9;rh$1eU
} I.|b:c
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/** d)D!np=
* @param data ,`!lZ|
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* @param j 02tN=}Cj)
* @param i @qjN>PH~
*/ bi+g=cS
private void insertSort(int[] data, int start, int inc) { "rEfhzmyF
int temp; 0T#z"l<L
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,_w}\'?L
} *P]]7DR
} f8qDmk5s
} bwP@}(K
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} OpU9:^r
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快速排序: \w1',"l`
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package org.rut.util.algorithm.support; .f;@OqU
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import org.rut.util.algorithm.SortUtil; =_g#I
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/** #902x*Z'c"
* @author treeroot [q_62[-X
* @since 2006-2-2 /L@o.[H
* @version 1.0 re#]zc<
*/ =A{'57yP
public class QuickSort implements SortUtil.Sort{ ahCwA}
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/* (non-Javadoc) Lc[TIX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 02%~HBS
*/ JdUdl_Dz
public void sort(int[] data) { TgDT
quickSort(data,0,data.length-1); K3h7gY| .
} nR@mm
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private void quickSort(int[] data,int i,int j){ E]g6|,4~-
int pivotIndex=(i+j)/2; .]zZw B
file://swap rUyGTe(@h
SortUtil.swap(data,pivotIndex,j); iQG]v[$
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int k=partition(data,i-1,j,data[j]); 4x4[
SortUtil.swap(data,k,j); h)j#?\KYm9
if((k-i)>1) quickSort(data,i,k-1); f?eq-/U R
if((j-k)>1) quickSort(data,k+1,j); <gH-`3J6
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} S
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/** F0zaA
* @param data _1Ne+"V
* @param i M2d&7>N
* @param j $v e$Sq
* @return i[FYR;C
*/ ~]?EV?T
private int partition(int[] data, int l, int r,int pivot) { KydAFxUb
do{ \T<F#a
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Cc`-34/%
SortUtil.swap(data,l,r); K^tc]ZQ
} :AqtPV'
while(l SortUtil.swap(data,l,r); a j
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return l; -a~n_Z>_
} ,D(Bg9C
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} 9kqR-T|Q
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改进后的快速排序: OK`^DIr5l
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package org.rut.util.algorithm.support; Pec Zuv
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import org.rut.util.algorithm.SortUtil; KC2Z@
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/** 7P*\|Sxk%
* @author treeroot t98S[Z(-%+
* @since 2006-2-2 )t7MD(
* @version 1.0 GVn'p
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*/ '/0e!x/8
public class ImprovedQuickSort implements SortUtil.Sort { "zTy_0[;
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private static int MAX_STACK_SIZE=4096; f2SJ4"X
private static int THRESHOLD=10; 4@<wN \'
/* (non-Javadoc) S# baOO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i`];xNR'
*/ *kTp(*K/7`
public void sort(int[] data) { ~7g$TAe{
int[] stack=new int[MAX_STACK_SIZE]; p8YOow7)
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int top=-1; Lr6C@pI
int pivot; 6biR5&Y5U&
int pivotIndex,l,r; 2$!,$J-<Y
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stack[++top]=0; vJVh%l+
stack[++top]=data.length-1; .v'`TD).6
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while(top>0){ :5T=y @
int j=stack[top--]; ^*B@=
int i=stack[top--]; 3K/tB1
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pivotIndex=(i+j)/2; 8==M{M/eM
pivot=data[pivotIndex]; k W
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SortUtil.swap(data,pivotIndex,j); H`URJ8k$Q
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file://partition }-XZ1qr
l=i-1; cwtlOg
r=j; ~[og\QZX
do{ Vmh$c*TE
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); W_ Hoa*~
SortUtil.swap(data,l,r); ~@X3qja
} RF'nwzM3
while(l SortUtil.swap(data,l,r); (RG "2I3
SortUtil.swap(data,l,j); 1MnC5[Q
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if((l-i)>THRESHOLD){ d&Nji%Ej
stack[++top]=i; $ywROa]
stack[++top]=l-1; 9b,0_IMHH
} 8tna<Hx
if((j-l)>THRESHOLD){ /7p(%vr
stack[++top]=l+1; r#&JfAo
stack[++top]=j; &V+KM"Ow
} T9]0/>
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} k4u/vn`&r
file://new InsertSort().sort(data); qP##C&+#q
insertSort(data); "XLtrAu{
} ~%M*@fm
/** shy[>\w
* @param data )uR_d=B&
*/ +c
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private void insertSort(int[] data) { Dr=$ }Y
int temp; ]SPuNBsy)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :2
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} vZ57
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}
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} j&a\ K}U!
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} @H~oOf
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归并排序: Iu`S0#+
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package org.rut.util.algorithm.support; s3Zt)xQ3
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import org.rut.util.algorithm.SortUtil; .sM,U
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/** xJU]py~o
* @author treeroot y0&vsoT
* @since 2006-2-2 6\I1J=
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* @version 1.0 IhZn
*/ *jPd=+d
public class MergeSort implements SortUtil.Sort{ " Y^9g/
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/* (non-Javadoc) 7[mfI?*m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2cIKph
*/ 5kQ@]n:<k
public void sort(int[] data) { yqL" YD
int[] temp=new int[data.length]; Wq5}LO)
mergeSort(data,temp,0,data.length-1); /^\E:(RH
} <-n^h~,4
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private void mergeSort(int[] data,int[] temp,int l,int r){ &k)v/
int mid=(l+r)/2; FPF$~ sX
if(l==r) return ; M<NY`7$^
mergeSort(data,temp,l,mid); 6<QC|>p
mergeSort(data,temp,mid+1,r); t6mv
for(int i=l;i<=r;i++){ p[].4_B;
temp=data; }mIN)o
} &IzNoB
int i1=l; w3sU& |N
int i2=mid+1; UA2KY}pz5
for(int cur=l;cur<=r;cur++){ 5~jz| T}s
if(i1==mid+1) U] GD6q
data[cur]=temp[i2++]; "M /Cl|z
else if(i2>r) n=F
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data[cur]=temp[i1++]; Mlo,F1'?>
else if(temp[i1] data[cur]=temp[i1++]; 5G(dvM-n
else Yo'Y-h#
data[cur]=temp[i2++]; p=E#!cn3
} oD\t4]?E
} 2Vf242z_
@n.n[zb\|
} cqJXZ.XC
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改进后的归并排序: Z2})n
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package org.rut.util.algorithm.support; 1i~q~O,
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import org.rut.util.algorithm.SortUtil;
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/** _Z9d.-
* @author treeroot .s,04xW\
* @since 2006-2-2 _xm<zy{`S
* @version 1.0 }d>.Nj#zh
*/ QKq4kAaJ!
public class ImprovedMergeSort implements SortUtil.Sort { p}pd&ut1
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private static final int THRESHOLD = 10; 3c,4 wyn
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/* #Y=b7|l
* (non-Javadoc) U!uJ )mm
* E0fMFG^P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~|O; Sdo=
*/ "Ueq
public void sort(int[] data) { 9*K-d'm
int[] temp=new int[data.length]; P!IA;i
mergeSort(data,temp,0,data.length-1); ob2_=hQnC
} 4u%AZ<-C}m
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private void mergeSort(int[] data, int[] temp, int l, int r) { s5mJ
-
int i, j, k;
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int mid = (l + r) / 2; *c/V('D/
if (l == r) m;{HlDez
return; !9KDdU
if ((mid - l) >= THRESHOLD) W#NZnxOX"
mergeSort(data, temp, l, mid); \#Jq%nd
else -=gI_wLbM
insertSort(data, l, mid - l + 1); %W7%] Z@j
if ((r - mid) > THRESHOLD) _D?/$D7u#%
mergeSort(data, temp, mid + 1, r); fjy\Q
else ]u$tKC
insertSort(data, mid + 1, r - mid); W'"?5} (
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for (i = l; i <= mid; i++) { eWex/ m
temp = data; fiA8W
} XxdD)I
for (j = 1; j <= r - mid; j++) { 6Y,&