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。 <L72nwcK
插入排序: #hOAG_a,
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package org.rut.util.algorithm.support; lP!`lhc-^
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import org.rut.util.algorithm.SortUtil; YXR%{GUP[
/** `;@#yyj:_
* @author treeroot fh1rmet&Ts
* @since 2006-2-2 DKjkO5R\
* @version 1.0 RSNukg
*/ FK$?8Jp
public class InsertSort implements SortUtil.Sort{ aK%i=6j!
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/* (non-Javadoc) "v"w ER?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0V5 RZ`.
*/ 2xchjU-
public void sort(int[] data) { >l\?K8jL9
int temp; >lo,0oG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v$O%U[e<
} Btmv{'T_y@
} f2sv$#'
} mgB7l0)b
i#@3\&{J>
} Kw%n;GFl'
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冒泡排序: xp395ub6
RtrESwtR
package org.rut.util.algorithm.support; UqaLTdYG
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import org.rut.util.algorithm.SortUtil; ![wV}.}
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/** PXZZPW/
* @author treeroot >-s\$8En'
* @since 2006-2-2 A;t6duBDf/
* @version 1.0 26YY1T\B)
*/ 7I/
public class BubbleSort implements SortUtil.Sort{ ,= ;d<O8
,FvBZ.4c3=
/* (non-Javadoc) ,8KD-" l^g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hhTM-D1Ehs
*/ R"S,&
public void sort(int[] data) { \X5>HPB
int temp; F[Dhj,C"
for(int i=0;i for(int j=data.length-1;j>i;j--){ SArSi6vF
if(data[j] SortUtil.swap(data,j,j-1); D\~*| J
} Yg5m=Lis
} \0'7p-T6
} nVqFCBB
} p}qNw`
x[Xj[O
}
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选择排序: *5DOTWos
=='~g~
package org.rut.util.algorithm.support; CU3[{a
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import org.rut.util.algorithm.SortUtil; E>j*m}b
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/** 7/.- dfEK
* @author treeroot CD\k.
* @since 2006-2-2 CwKo'PAJ
* @version 1.0 S ^?&a5{o
*/ 'H0b1t1S%
public class SelectionSort implements SortUtil.Sort { @\,WJmW
@D!KFJ
/* \Uun2.K
* (non-Javadoc) :IFTiq5a;
* zbt>5S_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Jw6.q+
*/ 6,j6,Q(67
public void sort(int[] data) { 5gP#V
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int temp; "^j&
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for (int i = 0; i < data.length; i++) { #t
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int lowIndex = i; 73?ZB+\)0A
for (int j = data.length - 1; j > i; j--) { -(FVTWi0
if (data[j] < data[lowIndex]) { \S(:O8_"68
lowIndex = j; :]%z8,6k
} _@3?yv~ D
} Fx']kn9
SortUtil.swap(data,i,lowIndex); e-;$Iv
} WDr'w'
} yZ t}Jnv
X%7Y\|
} l^x5m]Kt
>&h#t7<
Shell排序: T)Byws
EB'(%dH
package org.rut.util.algorithm.support; RG=!,#X
/g3U,?qP
import org.rut.util.algorithm.SortUtil; ?C
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/** #z{9:o7[-
* @author treeroot J2_D P
* @since 2006-2-2 X$w ,zb\
* @version 1.0 @)m H"u!(7
*/ Rt{qbM|b&
public class ShellSort implements SortUtil.Sort{ )P\Vd #
7-81,ADv(
/* (non-Javadoc) Gu Msw*{>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }0c
*/ jj8AV lN
public void sort(int[] data) { /X)fWO S6
for(int i=data.length/2;i>2;i/=2){ kBd #=J
for(int j=0;j insertSort(data,j,i); `i0RLGze
} ;Dg8>
} Hs<vCL \
insertSort(data,0,1); RO,
} u=
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kii=/
;3NA,JA#Y
/** N ?0T3-/K
* @param data c,;-[sn
* @param j ;bq_Y/"
* @param i s<x2*yVUA
*/ -G2'c)DR
private void insertSort(int[] data, int start, int inc) { pulE6T7x
int temp; lTsl=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uZ*;%y nQ
} |)QE+|?P
} rWI6L3,i+
} wYZFW'5p
OL&ku &J_
} XPE{]4 g
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快速排序: lil1$K: i
+K2jYgy
package org.rut.util.algorithm.support; 5=/H2T!F
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import org.rut.util.algorithm.SortUtil; !u@e^J{Ao
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/** %c)^8k;I
* @author treeroot +/*,%TdQ4
* @since 2006-2-2 QcG4~DEX4
* @version 1.0 Ul7)CT2:
*/ S!cc%
public class QuickSort implements SortUtil.Sort{ /qA\|'~
JX@/rXFY}
/* (non-Javadoc) HkFoyy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J<BBM.^]
*/ P#bZtWx'<N
public void sort(int[] data) { !T02@e/
quickSort(data,0,data.length-1);
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} <7cm[
private void quickSort(int[] data,int i,int j){ xpt*S~
int pivotIndex=(i+j)/2; .<j\"X(
file://swap ,-#8/9ts
SortUtil.swap(data,pivotIndex,j); RSXYz8{
fEF1&&8^
int k=partition(data,i-1,j,data[j]); &m_4#
SortUtil.swap(data,k,j); uFNVV;~RFI
if((k-i)>1) quickSort(data,i,k-1); Q)S0z2
if((j-k)>1) quickSort(data,k+1,j); ^6`"f
I|]~f[xI
} W>+\A"
/** =m6;]16D
* @param data -bT1Qh
X
* @param i LO0<=4iN(
* @param j p=_K P9
* @return oF[l<OY4
*/ uH S)
private int partition(int[] data, int l, int r,int pivot) { (mIw3d8Tz
do{ 1>bG]l1//
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); CEjMHP$=
SortUtil.swap(data,l,r); +c!v%uX
} jFfuT9oId
while(l SortUtil.swap(data,l,r); `+cc{k
return l; ,,vl+Z<&
} 9T#d.c24
zI77#AUM
} [`^5Zb
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改进后的快速排序: *T0{ yI
Kk|uN#m
package org.rut.util.algorithm.support; 5> M6lwS
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import org.rut.util.algorithm.SortUtil; ew8f7S[
QyN<o{\FD!
/** }_m/3*x_
* @author treeroot X;/~d>@
* @since 2006-2-2 >sk vg
* @version 1.0 uBp"YX9rx
*/ w3oh8NRs_
public class ImprovedQuickSort implements SortUtil.Sort { GqB]^snh
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private static int MAX_STACK_SIZE=4096; H<bYm]a%
private static int THRESHOLD=10; uh#"4-v
/* (non-Javadoc) *0M[lR0t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t/xWJW2
*/ #_)<~
public void sort(int[] data) { <pzCpF<
int[] stack=new int[MAX_STACK_SIZE]; . AJ(nJ)
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int top=-1; ^]_[dqd
int pivot; t@dv$W2
"
int pivotIndex,l,r; ;
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stack[++top]=0; >p"ytRu^
stack[++top]=data.length-1; G
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while(top>0){ 701ei;
int j=stack[top--]; vhe[:`=a
int i=stack[top--]; A|3'9iL{9
7OSk0%Q,
pivotIndex=(i+j)/2; zF'LbQz0[
pivot=data[pivotIndex]; l0hcNEj{W
9p|;Hh:
SortUtil.swap(data,pivotIndex,j); _`'VOY`o
n."vCP}O+
file://partition )bCw~'h*
l=i-1; i|5.DhK}
r=j; tkQ#mipAj
do{ jhU'UAn
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -%R3YU3
SortUtil.swap(data,l,r); ]Dj,8tf`H
} `v;9!ReZV
while(l SortUtil.swap(data,l,r); ~MuD`a7#G
SortUtil.swap(data,l,j); H?\b
([vyY}43h
if((l-i)>THRESHOLD){ \53(D7+
stack[++top]=i; yDmNPk/
stack[++top]=l-1; )w3?o#@
} ST'eJ5P7!5
if((j-l)>THRESHOLD){ q6R``
stack[++top]=l+1; e,*E`ol
stack[++top]=j; dXwfOC\\
} e+'PRVc
t(d$v_*y51
} +OEheG8
file://new InsertSort().sort(data);
e u{
insertSort(data); 1#]0\Y(
} uP;qs8
/** |_fmbG
* @param data )(^L*
*/ {lNvKm)w
private void insertSort(int[] data) { #RfNk;kaA
int temp; aXOW +$,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g3fxf(iY(
} B4uJT~,7>
} PIo8m f/
} c;RL<83:
kK62yz,
} 6R`q{}.
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归并排序: n:TWZ.9
*O5Ysk^|
package org.rut.util.algorithm.support; _lK+/"-l
Y.7iKMp(
import org.rut.util.algorithm.SortUtil; htgtgW9
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G6*P]<
/** @^O+ulLJ,]
* @author treeroot LtJl\m.th
* @since 2006-2-2 bi:TX<K+
* @version 1.0 S)n+E\c
*/ W##~gqZ/
public class MergeSort implements SortUtil.Sort{ Es7+bFvsE8
&"_5?7_N
/* (non-Javadoc) XA1gV>SJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "A4.2
*/ ,\%qERk
public void sort(int[] data) { GC#s;X
int[] temp=new int[data.length]; R&vV!d
mergeSort(data,temp,0,data.length-1); 2:8p>^g=
} @7}]\}SR
[B2g{8{!
private void mergeSort(int[] data,int[] temp,int l,int r){ $vC}Fq
int mid=(l+r)/2; OV.f+_LS
if(l==r) return ; VGe OoS
mergeSort(data,temp,l,mid); I1Jhvyd?$
mergeSort(data,temp,mid+1,r); bF"1M#u:
for(int i=l;i<=r;i++){ zJMm=Mw^
temp=data; ru>c\X^|
} $XZC8L#
int i1=l; 5`3Wua
int i2=mid+1; K}feS(Ji
for(int cur=l;cur<=r;cur++){ UG,<\k&
if(i1==mid+1) />13?o#
data[cur]=temp[i2++]; Lk>GEi|
else if(i2>r) b"PRa|]
data[cur]=temp[i1++]; |z
8Wh
else if(temp[i1] data[cur]=temp[i1++]; QIWfGVc-
else )wb&kug-
data[cur]=temp[i2++]; 0;/},B[A
} nX>HRdC
} 1Y6DzWI
bMvHAtp
} +\yQZ{4'@
>S[NI<=8S
改进后的归并排序: '<!T'l:R:/
hVl^vw7o
package org.rut.util.algorithm.support; _Z0O]>KH
Ty5}5)CRZ
import org.rut.util.algorithm.SortUtil; (DTXc2)c
\-nbV#{
/** [IRWm N-
* @author treeroot sqE? U*8.-
* @since 2006-2-2 nN*:"F/^
* @version 1.0 ?rSm6V
*/ B4kJ 7Pdny
public class ImprovedMergeSort implements SortUtil.Sort { 277Am*2
e:T8={LU2W
private static final int THRESHOLD = 10; C9Xj)5k@R
M\L^ Wf9
/* '(-SuaH49
* (non-Javadoc) `F,*NESv
* 6_a~
4_#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {[Z}<#n)
*/ +/|t8z FWs
public void sort(int[] data) { fKkH
[
int[] temp=new int[data.length]; syB.Z-Cpd
mergeSort(data,temp,0,data.length-1); UWIw/(Mv/]
} yRtxh_wr9
90[?)s
private void mergeSort(int[] data, int[] temp, int l, int r) { 3{ FUFx
int i, j, k; N799@:.
int mid = (l + r) / 2; KL^hYjC
if (l == r) ? 1
~C`I;
return; e)):U
if ((mid - l) >= THRESHOLD) $`'Xb
mergeSort(data, temp, l, mid); 3 6-Sw
else xu(N'l.7&
insertSort(data, l, mid - l + 1); SXF~>|h5<
if ((r - mid) > THRESHOLD) M_Z(+k{Gy
mergeSort(data, temp, mid + 1, r); ]J)3y+;P
else k*"FMJG_
insertSort(data, mid + 1, r - mid); us$=)m~v+
s!eB8lkcT
for (i = l; i <= mid; i++) { JV_V2L1Ut
temp = data; (n
{,R
} Y2 QX9RN
for (j = 1; j <= r - mid; j++) { Bq*aP*jv
temp[r - j + 1] = data[j + mid]; &vHfuM`
} x-Ug(/!^
int a = temp[l]; e%K
oecq
int b = temp[r]; u~\I
for (i = l, j = r, k = l; k <= r; k++) {
YIZ+BVa
if (a < b) { \95O
data[k] = temp[i++]; J%SuiT$L&Y
a = temp; MQ7Hn;`B
} else { /+zzZnLl-M
data[k] = temp[j--]; Bkh1VAT
b = temp[j]; d^W1;0
} ml\2%07
} 6E0{(*
} VY]L<4BfGL
zM+eb| >cr
/** H){lXR/#u
* @param data ,p7W4;?4
* @param l ;fl3'.S[
* @param i N "Mw1R4
*/ MF]EX
private void insertSort(int[] data, int start, int len) { #[ZNiaWT
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6
~LCj"
} f\]splL
} .M zAkZ=
} lOJ3_8
} hUO&rov3@
/hksESiU
堆排序: ObIL w
uqFYa bU
package org.rut.util.algorithm.support; 7v{s?h->$
3sF^6<E
import org.rut.util.algorithm.SortUtil; [8$K i$;
[t }\8^y
/** 6l,oL'$}P1
* @author treeroot 9#iv|X
* @since 2006-2-2 2?./S)x)
* @version 1.0 8{ooLdpX7
*/ {Xw6p
public class HeapSort implements SortUtil.Sort{ 6Qh@lro;y
`+?g96
/* (non-Javadoc) Htn''adg5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &w7Ev21
*/ 6X`i*T$.
public void sort(int[] data) { ).D+/D/"2
MaxHeap h=new MaxHeap(); Rt=zqfJ
h.init(data); *uG!U%jY)
for(int i=0;i h.remove(); 6xq/
System.arraycopy(h.queue,1,data,0,data.length); Fh0cOp(
} JT(6Uf
NuQ
l
private static class MaxHeap{ <A+n[h
Tc.k0n%W:b
void init(int[] data){ 6! .nj3$*
this.queue=new int[data.length+1]; q47:kB{d
for(int i=0;i queue[++size]=data; f:hsE
fixUp(size); {Z!x]}{M
} mA2L~=v#
} ExKjH*gn
O~~WP*N
private int size=0; X" m0||
jqv"8S5
private int[] queue; +0Z,#b
LfsqtQ=J`
public int get() { 4Fs5@@>X
return queue[1]; 7G]v(ay
} 56`Tna,t
)F,IPAA#
public void remove() { $L kTu
SortUtil.swap(queue,1,size--); cM 5V%w
fixDown(1); 1XXuFa&
} s:ZYiZ-
file://fixdown DElrY)3O.
private void fixDown(int k) { oqUF_kh
int j; K6d2}!5
while ((j = k << 1) <= size) { 0 *^>/*
if (j < size %26amp;%26amp; queue[j] j++; #X t|"Z
if (queue[k]>queue[j]) file://不用交换 JG/Pc1aK
break; ` G-V
%
SortUtil.swap(queue,j,k); <N'v-9=2jl
k = j; !%X#;{
} tN1xZW:
} `p'682x I
private void fixUp(int k) { |w].*c}Z
while (k > 1) { r?2EJE2{V
int j = k >> 1; h"3Mj*s
if (queue[j]>queue[k]) u8Ak2:
break; QCAoL.v
SortUtil.swap(queue,j,k); r\T'_wo
k = j; Q5xQ5Le
} d+o.J",E
} {|{;:_.>
;_p$5GVR|
} J~.`
xQ,My
} F87/p
U[EZ,7n8
SortUtil: CC
B'
38#Zlcf
package org.rut.util.algorithm; zvbO
q
pv]2"|]V)
import org.rut.util.algorithm.support.BubbleSort; JnIE6@g<y
import org.rut.util.algorithm.support.HeapSort; IhjZ{oV/@
import org.rut.util.algorithm.support.ImprovedMergeSort; 4G2iT+X-
import org.rut.util.algorithm.support.ImprovedQuickSort; iY*fp=c9
import org.rut.util.algorithm.support.InsertSort; Mz 6PH)e;
import org.rut.util.algorithm.support.MergeSort; p?2^JJpUb
import org.rut.util.algorithm.support.QuickSort; =&I9d;7
import org.rut.util.algorithm.support.SelectionSort; gY&WH9sp?9
import org.rut.util.algorithm.support.ShellSort; < Dt/JA(p
b4&l=^:e=
/** Vbv)C3ezD
* @author treeroot H~
E<ek'~
* @since 2006-2-2 H1.ktG
* @version 1.0 X;]Ijha<*
*/ $p|Im,
public class SortUtil { C#LTF-$])
public final static int INSERT = 1; N*+ L'bO
public final static int BUBBLE = 2; #y-R*4G
public final static int SELECTION = 3; kvG.?^ v
public final static int SHELL = 4; GTM@9^
public final static int QUICK = 5; E#R1
public final static int IMPROVED_QUICK = 6; `ZU]eAV
public final static int MERGE = 7; B$M4f7
public final static int IMPROVED_MERGE = 8; d$^@$E2f
public final static int HEAP = 9; K0~=9/
21O@yNpS$
public static void sort(int[] data) { $R%tD.d3
sort(data, IMPROVED_QUICK); OS-k_l L
} ,FwpHs $A
private static String[] name={ =QK ucLo
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" EW`3$J;
}; /dO*t4$ @?
g:Q:cSg<
private static Sort[] impl=new Sort[]{ B@v
(ZY
new InsertSort(), aLl=L_
new BubbleSort(), k
t'[
new SelectionSort(), }@"v7X $
new ShellSort(), 7 0PGbAD
new QuickSort(), Z;S)GUG^
new ImprovedQuickSort(), =YIosmr
new MergeSort(), |ZC'a!
new ImprovedMergeSort(), znDpg{U(
new HeapSort() -24ccN;
}; Yxy!&hPLv:
1]9l
SE!E7
public static String toString(int algorithm){ 0"Euf41
return name[algorithm-1]; [nG[ x|;|
} 4V;-*:
fda4M
public static void sort(int[] data, int algorithm) { [kTckZv
impl[algorithm-1].sort(data); b6xz\zCL
} 2I|lY>Z
U_hzSf
public static interface Sort { >6Jz=N,
public void sort(int[] data); XD"
4t4~>
} -p%cw0*Y]C
&O#1*y
Z
public static void swap(int[] data, int i, int j) { :wEy""*N0
int temp = data; YI;MS:Qj
data = data[j]; sy-#Eo#3
data[j] = temp; GvvKM=1
} _T7XCXEk
} Q5l+-