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。 wlPx,UqZ
插入排序: ^Eo=W/
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package org.rut.util.algorithm.support; WW@d:R
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import org.rut.util.algorithm.SortUtil; 1>Q'R
/** 8/"fWm/
* @author treeroot dgo3'ZO
* @since 2006-2-2 _pH{yhA
* @version 1.0 jp+_@S>
*/ J4YBqp
public class InsertSort implements SortUtil.Sort{ WGAXIQ
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/* (non-Javadoc) 5IKL#V`3a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '>(.%@
*/ j:bgR8%e
public void sort(int[] data) { D.%B$Y;G
int temp; ,Os? f:Y6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c={Ft*N
} <*EZ@XoN>
} s9oO%e<
} RB?V7 uX
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} Hk7K`9
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冒泡排序: :|1.seLQ
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package org.rut.util.algorithm.support; KTEZ4K^o=
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import org.rut.util.algorithm.SortUtil; N:"C+a(
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/** 0qFH
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* @author treeroot '!1$9o^$
* @since 2006-2-2 3I 0eW%,
* @version 1.0 q*)+K9LRk
*/ [hRU&z;W
public class BubbleSort implements SortUtil.Sort{ GYB+RU}],
Ei({`^
/* (non-Javadoc) "gW7<ilw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /( 6|{B
*/ 6*@yE
public void sort(int[] data) { H
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int temp; 6yAA~;*5'
for(int i=0;i for(int j=data.length-1;j>i;j--){ o0z67(N&g
if(data[j] SortUtil.swap(data,j,j-1); "'Z- UV
} YH:8<O,{-
} UF__O.l__
} SJgY
} kD.pzxEM
iz"3\{aN
} kVDe6},D7
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选择排序: l)+:4N?iVv
!#? kWAU
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; <Mf*l)%*
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/** G\iyJSj[P
* @author treeroot x|~zHFm6
* @since 2006-2-2 g.Hio.fVd
* @version 1.0 KhM.Tc
*/ $(HjI
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public class SelectionSort implements SortUtil.Sort { CP`
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/* >[*4Tjg
* (non-Javadoc) h
; kfh.
* @%W]".*'}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :mv`\
*/ 4Nmea-!*
public void sort(int[] data) { ,-rB=|w
int temp; w}<^l
for (int i = 0; i < data.length; i++) { PJ 9%/Nrh
int lowIndex = i; G?V"SU.
for (int j = data.length - 1; j > i; j--) { >#N[GrJAE
if (data[j] < data[lowIndex]) { ^b53}f8H
lowIndex = j; y@apJ;_R-
} J4yt N3
} 68x}w
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SortUtil.swap(data,i,lowIndex); ; Zq/eiB
} g#W_S?
} Jyu`-=It
6[==BbZ
} BXTN>d27
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Shell排序: [b`6v`x
&(O06QL
package org.rut.util.algorithm.support; ndOfbu;mf
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import org.rut.util.algorithm.SortUtil; $A?}a
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/** fI11dE9&?[
* @author treeroot $pFk"]=
* @since 2006-2-2 g@E&uyM
* @version 1.0 oBw}hH,hp
*/ ]P*!'iYN(
public class ShellSort implements SortUtil.Sort{ $^Ca:duk
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/* (non-Javadoc) %N{sD[^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u33zceE8
*/ ~hD{coVTI
public void sort(int[] data) { fq Y1ggL
for(int i=data.length/2;i>2;i/=2){ *g$agyOfh
for(int j=0;j insertSort(data,j,i); @"8~Y|L93
} ve%l({
} #>q[oie1e
insertSort(data,0,1); L<)Z> @fR
} BkT-m'I?
AM?Ec1S
#a
/** b"P&+c
* @param data j i##$xC
* @param j AP
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* @param i {]M>Y%j48
*/ k5s ?lWH
private void insertSort(int[] data, int start, int inc) { ;fx1!:;.
int temp; `
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hfh.eL
} jZ/+~{<
} ;o%:7&
} \-G5l+!
MHNe>C-!q
} s*+ZYPk
2+&R"#I
快速排序: 1t%<5O;R
Q;@X2JSp
package org.rut.util.algorithm.support; N&N 82OG
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import org.rut.util.algorithm.SortUtil; 9;pzzZ
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/** R
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* @author treeroot XqX
I(q^
* @since 2006-2-2 W60Q3
* @version 1.0 {a@hRY_
*/ L77EbP`P
public class QuickSort implements SortUtil.Sort{ -Y2&A$cM
B%y! aQep
/* (non-Javadoc) N[]U%9[=2F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "&Ff[O*
*/ V-:`+&S{^
public void sort(int[] data) { ]'E}
quickSort(data,0,data.length-1); F;X"3F.!
} LEA;dSf
private void quickSort(int[] data,int i,int j){ H}(=?}+
int pivotIndex=(i+j)/2; $Llvp bl
file://swap SUo^c1)G
SortUtil.swap(data,pivotIndex,j); )I?RMR
~X[S<Gi#
int k=partition(data,i-1,j,data[j]);
srvYAAE
SortUtil.swap(data,k,j); o;*]1
if((k-i)>1) quickSort(data,i,k-1); B6(h7~0(<
if((j-k)>1) quickSort(data,k+1,j); (
-xR7A
_,t&C7Yf;
} /XjN%|
/** /!:L7@BZ
* @param data JUmw$u
* @param i hzW{_Q.|?
* @param j xp~YIeSg
* @return z( *]'Y
*/ !+5C{Hs2
private int partition(int[] data, int l, int r,int pivot) { (K<Z=a
do{ 5Zzr5WM
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l&vm[3
SortUtil.swap(data,l,r); 5FZ47m ~{Z
} S3b|wUf
while(l SortUtil.swap(data,l,r); OuMco+C
return l; ~v^%ze
} IU7$%6<Y
QCVsVG!sN
} v/]Qq
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改进后的快速排序: vU ?b"n
P"oYC$
package org.rut.util.algorithm.support; mJSK; @w<O
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import org.rut.util.algorithm.SortUtil; B{[f}h.n
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/** xX[?L9RGz
* @author treeroot bELIRM9
* @since 2006-2-2 "xL;(Fqu
* @version 1.0 \8=e|a5`
*/ Y;'VosTD
public class ImprovedQuickSort implements SortUtil.Sort { 14mXx}O
%~][?Y ><
private static int MAX_STACK_SIZE=4096; av'd%LZP
private static int THRESHOLD=10; s"pR+)jf1D
/* (non-Javadoc) YgO aZqN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x{=[w`
*/ /'R UA
public void sort(int[] data) { k&MlQ2'!<
int[] stack=new int[MAX_STACK_SIZE]; =Jsg{vI
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int top=-1; A2}Z
*U(;
int pivot; NvQY7C
int pivotIndex,l,r; fR+Ov8PCq
dE 3i=
stack[++top]=0; "bHtf_
stack[++top]=data.length-1; %GVEY
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while(top>0){ +O;OSZ
int j=stack[top--]; ZcUh[5:|
int i=stack[top--]; p_rN1W
Dd'
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pivotIndex=(i+j)/2; o 8~f
pivot=data[pivotIndex]; O!#L#u53
9f@#SB_H
SortUtil.swap(data,pivotIndex,j); D)H?=G
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file://partition K$Mx}m7l
l=i-1; Gk{
"O%AE
r=j; %f_)<NP9=
do{ sf.E|]isW
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); UPfFT^=y
SortUtil.swap(data,l,r); J]n7| L
} hW0,5>[7%
while(l SortUtil.swap(data,l,r); pl
jV|.?
SortUtil.swap(data,l,j); b9W<1eqF
q3,P|&T
if((l-i)>THRESHOLD){ "sX[p
stack[++top]=i; $Nt=gSWw5
stack[++top]=l-1; Q9Y9{T
} 8>% jZ%`a
if((j-l)>THRESHOLD){ _0DXQS\
stack[++top]=l+1; o*O"\/pmF
stack[++top]=j; w*&n(zJF>
} vOvxQS}dBp
h 7(H%(^_
} e 5WdK
file://new InsertSort().sort(data); ;JPbBwm
insertSort(data); ,p[\fT($]
} T!=20 !I
/** 0I(GB;E
* @param data [B2>*UPl
*/ r|JiGj^om
private void insertSort(int[] data) { w]o:c(x@
int temp; l ) )~&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6]@|7|N>X
} [T.(MbP
} K=!ZI/+ju
} V<~_OF
v)C:E 9!|
} <WHs
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归并排序: Ul$X%
wH(vX<W-E
package org.rut.util.algorithm.support; 3G%XG{dg
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import org.rut.util.algorithm.SortUtil; ,#'o)O#
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/** !q=Q~ea
* @author treeroot Vav+$l|j@
* @since 2006-2-2 t_zY0{|P
* @version 1.0 #v~S",*.f
*/ o$H Jg
public class MergeSort implements SortUtil.Sort{ ~-`BSR
H(%] Os
/* (non-Javadoc) O=#/DM;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :m)Rmwn_
*/ ^qId]s
public void sort(int[] data) { 1EAVMJ
int[] temp=new int[data.length]; <R`,zE@t'(
mergeSort(data,temp,0,data.length-1); OB*Xb*HN
} ?{.b9`
tXG4A$(2&
private void mergeSort(int[] data,int[] temp,int l,int r){ Q:fUM[
int mid=(l+r)/2; Y;> p)'z
if(l==r) return ; 8@LykJbP
mergeSort(data,temp,l,mid); 6(<~1{
X%
mergeSort(data,temp,mid+1,r); S]K6qY
for(int i=l;i<=r;i++){ O275AxaN
temp=data; E/L?D
} {HRxyAI!
int i1=l; /m{?o
int i2=mid+1; '/yx_RK2?
for(int cur=l;cur<=r;cur++){ ^?^|Y?f2P?
if(i1==mid+1) ;5oH6{7_Z
data[cur]=temp[i2++]; WJFTy+bD
else if(i2>r) t6L^
#\'
data[cur]=temp[i1++]; Dpp52UnTE
else if(temp[i1] data[cur]=temp[i1++]; aIt
0;D
else MlC-Aad(
data[cur]=temp[i2++]; l&^[cR
} /=U v
} 7dg
5HH
ry'^1~,
} @qhg[= @
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改进后的归并排序: m1$P3tZPn
D16;6K'{
package org.rut.util.algorithm.support; u,SX`6%
O*n%2Mam
import org.rut.util.algorithm.SortUtil; \q`+
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/** M"$RtS|h
* @author treeroot gmAKW4(
* @since 2006-2-2 7E6?)bgh
* @version 1.0 _467~5JkU
*/ QsF<=b~
public class ImprovedMergeSort implements SortUtil.Sort { W4rw ;(\
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private static final int THRESHOLD = 10; \7tvNa,C
MVL }[ J
/* BLH3$*,H
* (non-Javadoc) \-iUuHP
* #/v_h6$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w>q_8V_K
*/ =cKk3kJC
public void sort(int[] data) { {)[g
int[] temp=new int[data.length]; zt?w n*_
mergeSort(data,temp,0,data.length-1); 0JRBNh
} ~V-
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Z6AU%3]
private void mergeSort(int[] data, int[] temp, int l, int r) { [^=8k2
int i, j, k; +~k,4
int mid = (l + r) / 2; +~{nU'
if (l == r) E|uXi)!.x
return; nMoF;AdKm
if ((mid - l) >= THRESHOLD) F"#*8P
mergeSort(data, temp, l, mid); 1'pQ,
else z}N^`_ *
insertSort(data, l, mid - l + 1); s ;Nu2aOp7
if ((r - mid) > THRESHOLD) cCKda3v!O
mergeSort(data, temp, mid + 1, r); `/Jr8J_
else &>4$ [m>n
insertSort(data, mid + 1, r - mid); g\nL
n#
GeTCN
for (i = l; i <= mid; i++) { jtpN o~O
temp = data; IX3yNTW"L
} Z:gsguX
for (j = 1; j <= r - mid; j++) { 4qR Q,g{$T
temp[r - j + 1] = data[j + mid]; K{h]./%
} Jpnp'
int a = temp[l]; pnb$lpxt
int b = temp[r]; g8@HAV^H
for (i = l, j = r, k = l; k <= r; k++) { {"(|oIo{
if (a < b) { a#**96Av
data[k] = temp[i++];
",GC\#^v
a = temp; >Nqkz?67
} else { 8k% :w0H
data[k] = temp[j--]; |8+rUFkU8
b = temp[j]; jo:p*Q"F
} mM~Q!`Nf.
}
0d)n}fm
} UM^hF%
&G,v*5N8$K
/** ViONG]F
* @param data dQo$^?
* @param l [vJosbU;
* @param i uB! P>v6
*/ ~t$VzL1
private void insertSort(int[] data, int start, int len) { EE{%hGb
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $>`8'I
}
t/c^hTT
} wOSNlbQ5jl
} @g?z>n
n
} !2,.C+,
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堆排序: EH%j$=@X
N* QI>kzU
package org.rut.util.algorithm.support; {<Zqw]
z}|'&O*.F
import org.rut.util.algorithm.SortUtil; v7RDoO]I
svII =JB
/** #6nA^K}
* @author treeroot Z r*ytbt
* @since 2006-2-2 r4'Pf|`u
* @version 1.0 Z!6G(zz:>
*/ QX/`s3N
public class HeapSort implements SortUtil.Sort{ VzNH%
o
qTh )
/* (non-Javadoc) -A~<IyPt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p^3d1H3
*/ P=GM7
public void sort(int[] data) { 36z{TWF
MaxHeap h=new MaxHeap(); ~M=`f{-$K
h.init(data); n~)%ou
for(int i=0;i h.remove(); #=c%:{O{4R
System.arraycopy(h.queue,1,data,0,data.length); w\a#Bfcv
} R8]bi|e)
e78}
private static class MaxHeap{ :JmNy<
s4\2lBU?
void init(int[] data){ QS_xOQ '
this.queue=new int[data.length+1]; [
CY=
for(int i=0;i queue[++size]=data; USY^
[@o[f
fixUp(size); :8FH{sqR
} -rBj-4|"
} Tbw8#[6AX
y+_U6rv[
private int size=0; z'o+3zq^
s5 BV8 M
private int[] queue; H}/1/5L
`CB TZG09
public int get() { GOjri
return queue[1]; 78kk"9h'
} yWy9IWI["
;3_'{
public void remove() { Zv_<*uzKZ
SortUtil.swap(queue,1,size--); rx<fjA%
fixDown(1); 4
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} ;NEHbLH#F
file://fixdown B7
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private void fixDown(int k) { YI/vt2
int j; _~r>C
while ((j = k << 1) <= size) { ay2.CBF
if (j < size %26amp;%26amp; queue[j] j++; :v+39
if (queue[k]>queue[j]) file://不用交换 H"sey +-
break; #F
kdcY
SortUtil.swap(queue,j,k); EJZ2V>\_-0
k = j; 59|Tmf(dS;
} fa)G$Q
} b=sc2)3?
private void fixUp(int k) { iqpy5
while (k > 1) { Xv6s,< #\
int j = k >> 1; 1*s Lj#
if (queue[j]>queue[k]) BX?Si1c
break; |o`TRqs
SortUtil.swap(queue,j,k); *ZRQ4i[+
k = j; #qzozQ4
} D`+'#%%x
} 7@:uVowQ
%NKf@If)
} -YYQnN
>R6Me*VR
} z}Q54,9m
\ /o`CV{O
SortUtil: v vFX\j3
[/I4Pe1Yj%
package org.rut.util.algorithm; h_J'dJS
tjGQ0-Lo
import org.rut.util.algorithm.support.BubbleSort; 3AWg 43L7
import org.rut.util.algorithm.support.HeapSort; 1 #_R`(C{
import org.rut.util.algorithm.support.ImprovedMergeSort; 9R!.U\sq
import org.rut.util.algorithm.support.ImprovedQuickSort; NcdOzx>
import org.rut.util.algorithm.support.InsertSort; jGId)f!)
import org.rut.util.algorithm.support.MergeSort; Rgg(rF=K6
import org.rut.util.algorithm.support.QuickSort; ' y1=Z
import org.rut.util.algorithm.support.SelectionSort; /Ue~W,|
import org.rut.util.algorithm.support.ShellSort; A+AqlM+$i
|iU#!+zY
/** ">|fB&~A
* @author treeroot hl8[A-d(R
* @since 2006-2-2
EP*"=_
* @version 1.0 ,_HVPE
*/ M1^pf<!s
public class SortUtil { oQAD
3a
public final static int INSERT = 1; ^2=11
public final static int BUBBLE = 2; dG\dGSZ\h
public final static int SELECTION = 3; "??$yMW
public final static int SHELL = 4; =5isT
public final static int QUICK = 5; qh{hpX)\D
public final static int IMPROVED_QUICK = 6; h?jKq2`
public final static int MERGE = 7; R]H/Jv\'
public final static int IMPROVED_MERGE = 8; \G:\36l
public final static int HEAP = 9; _DS_AW}D
mGb,oj7l
public static void sort(int[] data) { e2~&I`ct
sort(data, IMPROVED_QUICK); n'>`2 s
} gy0l@ 5 N
private static String[] name={ DHQavHqbZ
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~"xc
3(h
}; eh`n?C
<'f+nC=2
private static Sort[] impl=new Sort[]{ 7M9Ey29f
new InsertSort(), e'Njl?>3
new BubbleSort(), 8R0Q -,'
new SelectionSort(), 'W(!N%u
new ShellSort(), {B+|",O5)
new QuickSort(), =wEU+R_#o
new ImprovedQuickSort(), ,ELbm
new MergeSort(), 9}G.F r
new ImprovedMergeSort(), N;gI %6
new HeapSort() ky R=U`OW
}; ()%NotN;
;d5d$Np@m&
public static String toString(int algorithm){ iW oe
return name[algorithm-1]; f_'#wc6
} @~1}n/
D[#6jJAb
public static void sort(int[] data, int algorithm) { NFsj
~6F#
impl[algorithm-1].sort(data); H+lBb$
} o>~xrV`E
fRlO.!0(
public static interface Sort { *{TB<^ *
public void sort(int[] data); @
(4$<><
} m6+4}= Cn
% XvJJ
public static void swap(int[] data, int i, int j) { 'fo.1
int temp = data; E)ne
z
data = data[j]; ny++U;qi
data[j] = temp; }:SWgPfc
} U?/C>g%/PI
} >/J!:Htk+K