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。 ]k hY8it
插入排序: (efH>oY[
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package org.rut.util.algorithm.support; Ne=D$o
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import org.rut.util.algorithm.SortUtil; 0@
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/** `
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* @author treeroot k,?k37%T]
* @since 2006-2-2 'F@'4[uda
* @version 1.0 Mqq7;w@(J
*/ OlP#|x*
public class InsertSort implements SortUtil.Sort{ 6 R!0v8
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/* (non-Javadoc) gw H6r3=y(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =0Nd\
*/ 'b-}KDP
public void sort(int[] data) { q|~9%Pujg
int temp; EprgLZ1B
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $+tkBM
} H)5]K9D
} )T^hyi$
} `8L7pbS%,Q
O @l `D`
} Z@1rs#
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冒泡排序: 6,!]x>B
>Zr`9$i
package org.rut.util.algorithm.support; :5ji.g* 0
r!;NH3 *
import org.rut.util.algorithm.SortUtil; !a
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/** /V,:gLpQ
* @author treeroot 8 }-"&-X
* @since 2006-2-2 5[0n'uH
* @version 1.0 wL:3RZB
*/ 8^O|Aa$IF:
public class BubbleSort implements SortUtil.Sort{ 4h-y'&Z
Gv<K#@9T
/* (non-Javadoc) E0GpoG5C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mX
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*/ _Ab|<!a/R
public void sort(int[] data) { C,Ch6Ph
int temp; _KKG^
u<
for(int i=0;i for(int j=data.length-1;j>i;j--){ *dGW=aM#C
if(data[j] SortUtil.swap(data,j,j-1); ,9=a(j"
} R#oXQaBJ
} 8NpQ"0X
} P!:D2zSH_
} =>4,/g3
*C$
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} 5)0R:
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选择排序: 4/$]wK`
3^8%/5$v
package org.rut.util.algorithm.support; CT/`Kg_
.Zo8KwkFY
import org.rut.util.algorithm.SortUtil; cd\0
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5
I
/** q")}vN
* @author treeroot }E*#VA0/nY
* @since 2006-2-2 I"r*p?
* @version 1.0 uA,K}sNRZ
*/ dqcfs/XhP
public class SelectionSort implements SortUtil.Sort { !}U&%2<69
F e8xOo6
/* 3rs=EMz:w
* (non-Javadoc) >*EcX 3
* &Jq?tnNd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L~~;i'J
*/ qL(Qmgd
public void sort(int[] data) { 8hdd1lVKO8
int temp; Wa
, #
for (int i = 0; i < data.length; i++) { 9[/Gd{`XC
int lowIndex = i; `*N2x\+X
for (int j = data.length - 1; j > i; j--) { lr=*Ty(V
if (data[j] < data[lowIndex]) { Z>'.+OW
lowIndex = j; iGM-#{5
} YYN=`ST
} uYF_sf
SortUtil.swap(data,i,lowIndex); [@Y?'={qE
} !RAyUfS
} ]^R;3kU4Q
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} '\P6NszY~
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Shell排序: *joM[ML` 6
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package org.rut.util.algorithm.support; jf@#&%AC9
)/UPDdO
import org.rut.util.algorithm.SortUtil; RaKL KZn
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/** YaDr6)
* @author treeroot Sky!ZN'I
* @since 2006-2-2 X]M)T
* @version 1.0 .pK_j~}P
*/ xrp%b1Sy
public class ShellSort implements SortUtil.Sort{ 5)nm6sf
1:XT r
/* (non-Javadoc) &?v^xAr?B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +!CG'qyN>
*/ [.;VCk)0x
public void sort(int[] data) { EX=Q(} 9F<
for(int i=data.length/2;i>2;i/=2){ u9_ Fjm}&
for(int j=0;j insertSort(data,j,i); nTyKZ(#u
} Ub%5# <k|-
} yS %J$o&
insertSort(data,0,1); wYPJji
D
} ]&jXD=a"
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/** V_$ BZm%8J
* @param data RKx"
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* @param j YOd0dKe
* @param i Yc&yv
*/ 9ssTG4Sa
private void insertSort(int[] data, int start, int inc) { ">j}!n
8J
int temp; <%Bsb}h,
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9Y3_.qa(.
} c\065#f!
} >iDV8y
} `a*[@a#
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QD{ {
} N[~RWg
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快速排序: Dqs{n?@n
$_onSYWr
package org.rut.util.algorithm.support; %@Bl,!BJ,
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import org.rut.util.algorithm.SortUtil; Vr+X!DeY
l q~^&\_#
/** oqc89DEbJ
* @author treeroot An{`'U(l
* @since 2006-2-2 qk<(iVUO
* @version 1.0 kFg@|#0v9
*/ gG!L#J?
public class QuickSort implements SortUtil.Sort{ c_"]AhV~Mg
9LI#&\lba
/* (non-Javadoc) S-NKT(H)c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s3Pr$h
*/ ?Id3#+-O
public void sort(int[] data) { Gb4k5jl
quickSort(data,0,data.length-1); @G@,)`p4?
} )v
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private void quickSort(int[] data,int i,int j){ J^m#984
int pivotIndex=(i+j)/2; E_[|ZrIO&*
file://swap e$u=>=jV]
SortUtil.swap(data,pivotIndex,j); rVB,[4N
W2?6f:
int k=partition(data,i-1,j,data[j]); /zJDQ'k0
SortUtil.swap(data,k,j); US[{
Q
if((k-i)>1) quickSort(data,i,k-1); 2~h! ouleY
if((j-k)>1) quickSort(data,k+1,j); fkbHfBp[(A
1t w>C\
} roSdcQTeT
/** 3#<b!Yz
* @param data ^cs:S-s
* @param i bFD
vCF
* @param j @ qy
n[C
* @return Wn6~x2 LaV
*/ aDceOhfx
private int partition(int[] data, int l, int r,int pivot) { 6O"?wN%$
do{ n;+CV~
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R9@Dd
SortUtil.swap(data,l,r); .0+=#G>
} :Aj8u\3!@
while(l SortUtil.swap(data,l,r); /
VypN,
return l; t.Q}V5t{g
} {Rc mjI7
K9O%SfshF
} xV w9_il2a
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改进后的快速排序: [CxnGeKK
Mm7;'Zbg
package org.rut.util.algorithm.support; .
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import org.rut.util.algorithm.SortUtil; +}1h
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/** gCfAy=-,V
* @author treeroot 5ar2Y$bY
* @since 2006-2-2 Qf|x]x*5
* @version 1.0 !8YZ;l
*/ mqe83 k%
public class ImprovedQuickSort implements SortUtil.Sort { .\)`Xj[?
Ya~*e;CW2
private static int MAX_STACK_SIZE=4096; F/O5Z?C?
private static int THRESHOLD=10; &BTgISYi
/* (non-Javadoc) i82sMN1jl7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E0HXB1"
*/ }9=X*'BO
public void sort(int[] data) { -7-r~zmr
int[] stack=new int[MAX_STACK_SIZE]; <5@VFRjc
8G3CQ]G
int top=-1; W;L<zFFbU)
int pivot; ]+4QsoFNt
int pivotIndex,l,r; VgGMlDl
^EtBo7^t
stack[++top]=0; ^i+ d 3
stack[++top]=data.length-1; _C"=Hy{
C.]\ 4e
while(top>0){ W3Gg<!*Uo
int j=stack[top--]; zy8Z68%E`*
int i=stack[top--]; Dnk}
8`g@
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pivotIndex=(i+j)/2; *ay&&S*
pivot=data[pivotIndex]; &k53*Wo
[Ey[A|g
SortUtil.swap(data,pivotIndex,j); a9LK}xc={
=f~8"j
file://partition _EHz>DJ9
l=i-1; s|HpN
r=j; +;#z"m]
do{ B|I9Ex~L
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));
Z2P DT
SortUtil.swap(data,l,r); ;@ <E
} &BOq%*+
while(l SortUtil.swap(data,l,r); K<3,=gL9[
SortUtil.swap(data,l,j); iEx
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if((l-i)>THRESHOLD){ v;6O# ta'
stack[++top]=i; 9f=L'{
stack[++top]=l-1; )\aCeY8o
} ce56$L8[
if((j-l)>THRESHOLD){ W0-KFo.'
stack[++top]=l+1; 1 sJtkge:
stack[++top]=j; wmV7g7t6
} meF.`fh
,]Gi942
} };{Qx
file://new InsertSort().sort(data); Th.Mn}1%L
insertSort(data); RKi11z
} DjLSl,Z
/** sOVbz2\yb
* @param data ;15j\{r
*/ ]#NJ[IZb
private void insertSort(int[] data) { %>io$ o
int temp; npCiqO
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4
*n4P
} 1`& Yg(
} hnYL<<AA
} r'F)8%
C}'Tmi
} {D{'
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归并排序: HpKF7oJ'N
cM?i _m
package org.rut.util.algorithm.support; F=g+R~F
n9H4~[JiC
import org.rut.util.algorithm.SortUtil; ITssBB9
w. c]
/** F`Ld
WA
* @author treeroot D$?}M>
* @since 2006-2-2 0FAe5
BE7
* @version 1.0 9 $&$Fe
*/ -bP_jIZF;g
public class MergeSort implements SortUtil.Sort{ uN;]Fv@Z
Ss~yy0
/* (non-Javadoc) k>.n[`>$6|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $n#NUPzG+
*/ ^]zC~LfG
public void sort(int[] data) { ']&rPvkL
int[] temp=new int[data.length]; zz m[sX}
mergeSort(data,temp,0,data.length-1); x{_3/4
} q)f-z\
vT=?UTq
private void mergeSort(int[] data,int[] temp,int l,int r){ k.n-JS
int mid=(l+r)/2; h_y;NB(w
if(l==r) return ; $S'~UbmYU
mergeSort(data,temp,l,mid); ~PZIYG"D
mergeSort(data,temp,mid+1,r); 7[I%UP
for(int i=l;i<=r;i++){ '$0~PH&
temp=data; w D}g\{P
} 8!XK[zL
int i1=l; 5jey%)=
int i2=mid+1; s(0"r.
for(int cur=l;cur<=r;cur++){ ~Gj%z+<
if(i1==mid+1) !;, Dlq-}
data[cur]=temp[i2++]; V48o+ O
else if(i2>r) PRi1 `%d
data[cur]=temp[i1++]; Dt~ |)L+
else if(temp[i1] data[cur]=temp[i1++]; /%{Qf
else "8l&m6`U-
data[cur]=temp[i2++]; b?]Lx.l-
} /H'F4->
} [bh8Nj\E
/^\UB
fE
} U9t-(`[j?
I&JjyR
改进后的归并排序: 2tqj]i
CzfGb4
package org.rut.util.algorithm.support; |r<#>~*
+ t7n6
import org.rut.util.algorithm.SortUtil; ?,z/+/:
_O;2.M%@
/** hdN[wC]
* @author treeroot p*C| kE qk
* @since 2006-2-2 ;7*R ;/
* @version 1.0 G?dxLRy.do
*/ nXJG4$G
public class ImprovedMergeSort implements SortUtil.Sort { We)l_>G
a+=.(g
private static final int THRESHOLD = 10; DFM~jlH
(N^tg8 Z<
/* 6d{&1-@>
* (non-Javadoc) (iJ9ekB
* 3aUWQP2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J.Fy0W@+k4
*/ [4
y7tjar^
public void sort(int[] data) { $2/v8
int[] temp=new int[data.length]; ,LodP%%UV
mergeSort(data,temp,0,data.length-1); U9(p ^
} ! _p(H
k];NTALOG
private void mergeSort(int[] data, int[] temp, int l, int r) { rHpxk
int i, j, k; Kd!.sB/%
int mid = (l + r) / 2; yOswqhz
if (l == r) fWs @ZCt
return; 'Da*MGu9
if ((mid - l) >= THRESHOLD) w#^z:7fI
mergeSort(data, temp, l, mid); 6DT^:LHS
else DkJ "#8Yl=
insertSort(data, l, mid - l + 1); 9D[Jn}E:
if ((r - mid) > THRESHOLD) /8Ru O
mergeSort(data, temp, mid + 1, r); 0BrAgv"3a_
else $_f"NE}
insertSort(data, mid + 1, r - mid); 3%L@=q
><wYk)0E
for (i = l; i <= mid; i++) { O6"S=o&
temp = data; ?aWMU?S
} GV0-"9uwX~
for (j = 1; j <= r - mid; j++) { DIBoIWSuR
temp[r - j + 1] = data[j + mid]; T)o>U&KNP
} ]114\JE
int a = temp[l]; !g7lJ\B
int b = temp[r]; 1LVO0lT
for (i = l, j = r, k = l; k <= r; k++) { wAKm]?zB>
if (a < b) { Bdr'd? u<A
data[k] = temp[i++]; &w%--!T
a = temp; 5>\~jf
} else { i_f\dkol
data[k] = temp[j--]; !hjA
b = temp[j]; Ox%p"xuP,
} (sqI:a
} e#odr{2#4u
} wV^c@.ga
?np3*;lw
/** 0vZ49}mb)
* @param data v2jpao<K
* @param l 2(AuhZ>
* @param i XiO~^=J
*/ .R]DT5
private void insertSort(int[] data, int start, int len) { gP.PyYUV
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Yfr4<;%
} b_Dd$NC
} /Ref54
} N|e#&
} ?/q\S
4o|<zn
堆排序: jSMxb a]
8(>2+#exw
package org.rut.util.algorithm.support; 2 9#jKh
N?2C*|%f
import org.rut.util.algorithm.SortUtil; u';9zk/$
nArG
I}@
/** s("\]K
* @author treeroot ipC
<p?PpR
* @since 2006-2-2 vYg>^!Q
* @version 1.0 (vFO'jtcB-
*/ Y/ I32@
public class HeapSort implements SortUtil.Sort{ k}0b7er=R
"1Y'VpKm(~
/* (non-Javadoc)
yT-qT_.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gy Ey=@L
*/ %JL P=(
public void sort(int[] data) { hsHbT^Qm
MaxHeap h=new MaxHeap(); 8Dkq+H93
h.init(data); ,lcSJ^yr
for(int i=0;i h.remove(); Y?ZzFd,i&
System.arraycopy(h.queue,1,data,0,data.length); h+ <Jv
} ckYT69U
0.[tEnLZ
private static class MaxHeap{ qLV3Y?S!L
VWK%6Ye0
void init(int[] data){ $wC'qV
*
this.queue=new int[data.length+1]; FfNUFx2N
for(int i=0;i queue[++size]=data; &%`WXe-`R
fixUp(size); X?U'GLm
} yA#nnu1
} :-Ml?:0_X
[@_W-rA
private int size=0; .(99f#2M:
Wv||9[Rd
private int[] queue; &2bqL!k
"7Z-ACyF5
public int get() { *x:*Q \|
return queue[1]; ?I$- im
} c2gi3
<HnpI
public void remove() { JwQ/A[b
SortUtil.swap(queue,1,size--); =~>g--^U
fixDown(1); WbwwI)1
} wC?$P
file://fixdown /gn!="J
private void fixDown(int k) { @b!W8c 6
int j; ey6ujV7!
while ((j = k << 1) <= size) { Zs4NN2~
if (j < size %26amp;%26amp; queue[j] j++; ?a-5^{{
if (queue[k]>queue[j]) file://不用交换 k [LV^oEg
break; [HI$[:[
SortUtil.swap(queue,j,k); U!(es0rX
k = j; _2Mpzv
} U C_$5~8p
} GvZ[3GT
private void fixUp(int k) { {isL<
while (k > 1) { 2u$rloc$b
int j = k >> 1; L2=:Nac
if (queue[j]>queue[k]) h5(OjlMC
break; Y]tbwOle
SortUtil.swap(queue,j,k); ]T6pH7~
k = j; v[r8-0c
} 3l"8_zLP
} ;W]9DBAB
3W%j^nM
} s(KSN/
bz}-[W+
} v-BQ>-& s
%>$Puy\U
SortUtil: 74 &q2g{
`FEa(Q+s
package org.rut.util.algorithm;
[8~P
Pc^
fm L8n<1
import org.rut.util.algorithm.support.BubbleSort; }|%1LL^pB
import org.rut.util.algorithm.support.HeapSort; hI9q);g
import org.rut.util.algorithm.support.ImprovedMergeSort; <PiO %w{
import org.rut.util.algorithm.support.ImprovedQuickSort; ^qzH(~g{M
import org.rut.util.algorithm.support.InsertSort; Qj'Ik`o
import org.rut.util.algorithm.support.MergeSort; P)cEYk
import org.rut.util.algorithm.support.QuickSort; !6x7^E;c
import org.rut.util.algorithm.support.SelectionSort; CW2)1%1iz
import org.rut.util.algorithm.support.ShellSort; =t`cHs29
}*C*!?pcd
/** 3I(;c ,S
* @author treeroot K:^0*5Y-k
* @since 2006-2-2 `2hg?(ul
* @version 1.0 w {"1V7|
*/ jwUX?`6jX
public class SortUtil { I _gE`N
public final static int INSERT = 1; R1*4
public final static int BUBBLE = 2; B%tWi
public final static int SELECTION = 3; 6']HmM
public final static int SHELL = 4; )XHn.>]nc
public final static int QUICK = 5; U
E$Ix
public final static int IMPROVED_QUICK = 6; XMiu}w!
public final static int MERGE = 7; lB0`|UEb (
public final static int IMPROVED_MERGE = 8; 0)M8Tm0$
public final static int HEAP = 9; R8_I ASs
'y=N_/+s
public static void sort(int[] data) { GGf<9!:
sort(data, IMPROVED_QUICK); Le:(;:eL>t
} [h8s0
private static String[] name={ %~y>9K
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Sg4{IU
}; |-)8=QDz)r
#=VYq4B=
private static Sort[] impl=new Sort[]{ Nke!!A}\|
new InsertSort(), V$sY3,J7A%
new BubbleSort(), ZPyzx\6\
new SelectionSort(), r fzNw
new ShellSort(), Zazff@O *
new QuickSort(), ^5.XQ0n
new ImprovedQuickSort(), dI&Q5M8
new MergeSort(), TL)*onA9
new ImprovedMergeSort(), 5mC"8N1)
new HeapSort() DzQ
}; </WeB3#6
xDGS`o_w_
public static String toString(int algorithm){ Fs].Fa
return name[algorithm-1]; TN1pg
} N0.|Mb"?t
E5$]0#jB
public static void sort(int[] data, int algorithm) { ?3p7MjvZ
impl[algorithm-1].sort(data); ;AE-=/<
} 4(|yl^w
nYFrp)DLK
public static interface Sort { wD=]U@t`,
public void sort(int[] data); YZj*F-}
} NC#F:M;b
s2#Ia>5!
public static void swap(int[] data, int i, int j) { i'7+
?YL
int temp = data; u '7h(1@
data = data[j]; IHYLM;@L
data[j] = temp; dH!z<~
} An$2='=/
} xC,x_:R`