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。 ?^%[*OCCC!
插入排序: JKM(fX+
I
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package org.rut.util.algorithm.support; dRJ
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import org.rut.util.algorithm.SortUtil; c]|vg=W
/** n;Oe- +oSC
* @author treeroot 7<^+)DsS?
* @since 2006-2-2 2 L4[~>
* @version 1.0 ]H
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*/ DPzW,aIgv
public class InsertSort implements SortUtil.Sort{ )sm9%|.&
ISpV={$Zd
/* (non-Javadoc) y5j:+2|I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :.*Q@X}-I
*/ Zt3sU_
public void sort(int[] data) { a|u#w~
int temp; M?h{'$T
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G7 UUx+ X
} ['}|#3*w
} $?PI>9g!
} ?l9sj]^w
XZ
|L D#
} ]AY 4bm
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冒泡排序: vTK%8qoZ
k2D*`\
D
package org.rut.util.algorithm.support; ]jhi"BM
I3nE]OcW@
import org.rut.util.algorithm.SortUtil; hH1Q:}a
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/** lKejWT`;
* @author treeroot JI!1
.]&
* @since 2006-2-2 E'f7=ChNF
* @version 1.0 &gXL{cK'%
*/ %1A8m-u]M
public class BubbleSort implements SortUtil.Sort{ #H~55 ))F
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/* (non-Javadoc) #,#_"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y$R8J:5f
*/ 9A.NM+u7
public void sort(int[] data) { |D)CAQn,
int temp; $\P/
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for(int i=0;i for(int j=data.length-1;j>i;j--){ _R\FB|_
if(data[j] SortUtil.swap(data,j,j-1); Wa^Wn +r
} mw 5>[
} %Y ZCdS
} fxcE1=a
} FvT4?7-
NRx 7S9W
} W8 g13oAu"
}'P|A
选择排序: uBww
4~Cf_`X}]
package org.rut.util.algorithm.support; Jq` Dvz
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import org.rut.util.algorithm.SortUtil; m-O*t$6
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/** nN{DO:_o
* @author treeroot \;0pjxq=
* @since 2006-2-2 F\JS?zt2
* @version 1.0 %DiQTg7V,
*/ i
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public class SelectionSort implements SortUtil.Sort { W@AHE?s6g
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/* @JlT*:Dz
* (non-Javadoc) %h ;oi/pe
* ^N<aHFF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HMUx/M.j
*/ 7%"|6dw
public void sort(int[] data) { fh =R
int temp; .$-;`&0cZ
for (int i = 0; i < data.length; i++) { DLbP$&o
int lowIndex = i; k$%{w\?Jf
for (int j = data.length - 1; j > i; j--) { #eKKH]J/
if (data[j] < data[lowIndex]) { a^&"gGg
lowIndex = j; e2=}qE7
} jF;<9-m&
} jj&G[-"bv
SortUtil.swap(data,i,lowIndex); z!6_u@^-
} -"xAeI1+
} hXI[FICQU{
85#
3|5n
} -`q!mdA2
LBG`DYR@
Shell排序: l^R:W#*+U
&;ddnxFI
package org.rut.util.algorithm.support; -J63'bb7oi
'n7|fjX?Y
import org.rut.util.algorithm.SortUtil; e Fs5l
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/** s>G6/TTH6
* @author treeroot mdL T7
* @since 2006-2-2 ? /!Fv/
* @version 1.0 |E K6txRb
*/ RbUir185Y
public class ShellSort implements SortUtil.Sort{ yam'LF
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/* (non-Javadoc) w31O~Ve
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aN"YEL>w
*/ LeN }Q
public void sort(int[] data) { Q%aF~
for(int i=data.length/2;i>2;i/=2){ R~oY
R,L;
for(int j=0;j insertSort(data,j,i); A(&\wd
} ,'c%S|]U7
} FiQ&g*=|
insertSort(data,0,1); ?T73BL=
} >
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o
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/** JL_(%._J
* @param data `GqF/?i
* @param j aEdMZ+P.
* @param i MkVv5C
*/ d
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private void insertSort(int[] data, int start, int inc) { FsUH/Y
y
int temp; P:6K
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); jR1^e$
} rs4:jS$)
} >%6j -:S
} _RcEfT
* g+v*q X
} wa[J\lW
N/-(~r[
快速排序: iU.` TqR7
EM<W+YU
package org.rut.util.algorithm.support; u^C\aujg
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import org.rut.util.algorithm.SortUtil; <EyJ $$
d.ywH;
/** @ ~{TL
* @author treeroot FBP #_"z
* @since 2006-2-2 ~*h)`uM
* @version 1.0 ZD50-w;
*/ ST#)Fl
public class QuickSort implements SortUtil.Sort{ ,^4"e
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/* (non-Javadoc) :fX61S6)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d<?Zaehe\
*/ :OU(fz]
public void sort(int[] data) { T:Q+ Z }v+
quickSort(data,0,data.length-1); U'b}%[
} LkeYzQH/l
private void quickSort(int[] data,int i,int j){ eiOAbO#U
int pivotIndex=(i+j)/2; 6/QWzw.0c
file://swap hDJ+Rk@
SortUtil.swap(data,pivotIndex,j); Wsd_RT }ww
,f>^q"
int k=partition(data,i-1,j,data[j]); b%F'Ou~
SortUtil.swap(data,k,j); +:#g6(P]
if((k-i)>1) quickSort(data,i,k-1); hBZh0xy
if((j-k)>1) quickSort(data,k+1,j); d?U,}tv
fX:G;vYn
} Lo'GfHE
/** ~&0lWa
* @param data S%
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* @param i Y,n8co^
* @param j B$=1@
* @return ZWFOC,)b
*/ lh0G/8+C
private int partition(int[] data, int l, int r,int pivot) { t(,2x%{
do{ 3Qv9=q|[b
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !`U #Pjp.
SortUtil.swap(data,l,r); V[44aN
} 2DZ&g\|
while(l SortUtil.swap(data,l,r); RionKiN
return l; 4wS!g10 }
} pdQaVe7tRo
*JW.ca}
} 2#`d:@r
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改进后的快速排序: >&Ye(3w&
M;-FW5O't
package org.rut.util.algorithm.support; Oa5-^&I
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import org.rut.util.algorithm.SortUtil; @ bvWqMa
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/** B aCzN;)
* @author treeroot 'wLW`GX.
* @since 2006-2-2 A?ESjMy(R
* @version 1.0 ^SUo-N''
*/ <p_2&&?
public class ImprovedQuickSort implements SortUtil.Sort { >]bS"S
dZJU>o'BG
private static int MAX_STACK_SIZE=4096; g[{rX4~|
private static int THRESHOLD=10; sQzr+]+#9
/* (non-Javadoc) iQh:y:Jo1&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p{V(! v|
*/ Y^?PHz'Go
public void sort(int[] data) { R'1"`@fG
int[] stack=new int[MAX_STACK_SIZE]; ^> d"D
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int top=-1; Q|Pm8{8
int pivot; dI,H:g
int pivotIndex,l,r; h=cA]^:=
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stack[++top]=0; K8iQ?
stack[++top]=data.length-1; d/?0xL W
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while(top>0){ n*=Tm
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int j=stack[top--]; RCGpZyl
int i=stack[top--]; ~bjT,i
y3 S T"U
pivotIndex=(i+j)/2; U%2{PbL
pivot=data[pivotIndex]; xl,?Hh%#
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SortUtil.swap(data,pivotIndex,j); i;+<5_
i\L7z)u
file://partition ^\PNjj*C i
l=i-1; G>^ _&(c@2
r=j; 1UH_"Q03
do{ 'Ya- ;5Y]
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); KU0;}GSNX}
SortUtil.swap(data,l,r);
PurY_
} x A ZRl
while(l SortUtil.swap(data,l,r); WoMMAo~
SortUtil.swap(data,l,j); H%Sx*|
.V^h< d{
if((l-i)>THRESHOLD){ HtI>rj/\
x
stack[++top]=i; 2f0_Xw_V_
stack[++top]=l-1; | i'w"Tz4
} Uv3Fe%>
if((j-l)>THRESHOLD){ ~!dO2\X+
stack[++top]=l+1; 8g
2'[ci$q
stack[++top]=j; E+aE5wmr
} #mv~1tL
4vPKDd
} cT^x^%
file://new InsertSort().sort(data); 'P >h2^z
insertSort(data); O%s?64^U
} rOq>jvy
/** $-]PD`wmY
* @param data MW.,}f
*/ !L'O")!3
private void insertSort(int[] data) { '~Gk{'Nx"
int temp; {B\lk:"X
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oth=#hfU^
} K}Pi"Le@W
} 6~(iLtd#
} T+<OlXpL
{cYbM[}U"
} BO=j*.YKy
Js8d{\0\
归并排序: T;JA.=I
:j!N7c{
package org.rut.util.algorithm.support; 4}=Z+tDu>
d[Rs
import org.rut.util.algorithm.SortUtil; h`p9H2}0
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/** h]okY49hY
* @author treeroot *}`D2_uP
* @since 2006-2-2 vJ!<7 l&
* @version 1.0 *Ry
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*/ 5},kXXN{+
public class MergeSort implements SortUtil.Sort{ $P~Tt 4068
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/* (non-Javadoc) SQVyCxcX_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r*s)T`T}}
*/ |h1Y3
public void sort(int[] data) { syLpnNx=
int[] temp=new int[data.length]; cY\"{o"C
mergeSort(data,temp,0,data.length-1); n<>/X_m
} AVv 8Hhd
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private void mergeSort(int[] data,int[] temp,int l,int r){ _:,U$W
int mid=(l+r)/2; H;eOrX{GT
if(l==r) return ; naKB2y]l
mergeSort(data,temp,l,mid); 2(sq*!tX
mergeSort(data,temp,mid+1,r); cn!Y7LVr
for(int i=l;i<=r;i++){ k7Z1Y!n7
temp=data; q\6ZmKGnT
} Lv?e[GA
int i1=l; )OcG$H NK
int i2=mid+1; *l4`2 eqZ
for(int cur=l;cur<=r;cur++){ Kf7v_T/
if(i1==mid+1) #EdsB
data[cur]=temp[i2++]; $3MYr5
else if(i2>r) 4
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data[cur]=temp[i1++]; 0?nm`9v6
else if(temp[i1] data[cur]=temp[i1++]; s\dF7/b
else ;X3bgA']
data[cur]=temp[i2++]; J~vK`+Zs
} !>5!Fb=Sy
} Enj],I
oVSq#I4
} ;iEFG^'tG
R+O[,UM^I~
改进后的归并排序: GiN\@F!
FsYsQ_,R3
package org.rut.util.algorithm.support; u?n{r
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import org.rut.util.algorithm.SortUtil; & ]/Z~V t
Hh1OD?N)
/** [m3k_;[
* @author treeroot p#95Q
* @since 2006-2-2 6+[7UH~pm^
* @version 1.0 ;MR(Eaep
*/ ~?)ST?&
public class ImprovedMergeSort implements SortUtil.Sort { P7GF"/
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private static final int THRESHOLD = 10; Ug^v
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/* x
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* (non-Javadoc) "ujt:4p@
* |F 18j9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )cy_d!
*/ -]h3s
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public void sort(int[] data) { ;tF7GjEp
int[] temp=new int[data.length]; )0:@T)G
mergeSort(data,temp,0,data.length-1); T;%ceLD
} to
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private void mergeSort(int[] data, int[] temp, int l, int r) { ?g$dz?^CK&
int i, j, k; 9H<6k*
int mid = (l + r) / 2; LAwl9YnG:
if (l == r) "3i=kvdz
return; L@{5:#-
if ((mid - l) >= THRESHOLD) g2<xr;<t^
mergeSort(data, temp, l, mid); Px)/`'D
else xv{iWJcs
insertSort(data, l, mid - l + 1); m_z1|zM}o
if ((r - mid) > THRESHOLD) H+>l][
mergeSort(data, temp, mid + 1, r); ZdD]l*.\i
else Rz!E=1Y$
insertSort(data, mid + 1, r - mid); F*_mHYa;
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h
for (i = l; i <= mid; i++) { \5%T'S@5
temp = data; 0r+%5}|-K
} c!BiGw,;
for (j = 1; j <= r - mid; j++) { 7='M&Za
temp[r - j + 1] = data[j + mid]; *zy0,{bl
} K6.*)7$#
int a = temp[l]; " (+>#
int b = temp[r]; 46dh@&U
for (i = l, j = r, k = l; k <= r; k++) { K/y#hP
if (a < b) { '~E&^K5hr
data[k] = temp[i++]; 5UwaBPj4
a = temp; By8C-jD
} else { ^L;`F
data[k] = temp[j--]; yp=2nU"o
b = temp[j]; MOFIR
wVZ+
} he/UvMu
} Xa2QtJq
} (l.`g@(L
`bGAc&,&
/** sYt8NsQ
* @param data 3H%oTgWk
* @param l > @ulvHL
* @param i C`D5``4
*/ uE>2*u\
private void insertSort(int[] data, int start, int len) { xOjCF&W
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =J,aB p
} Ywf.,V
} |/g\N,]
} Zjt3U;Y
} DiAPs_@
pbivddi2
堆排序: eA>O<Z1>
'$M=H.
package org.rut.util.algorithm.support; :Q\b$=,:
C,w$)x5kls
import org.rut.util.algorithm.SortUtil; ztG_::QtG]
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/** }Y5Sf"~M
* @author treeroot UKx91a}g
* @since 2006-2-2 YXH9Q@Gn
* @version 1.0 <BQ4x.[
*/ 6ZVJ2xs[%
public class HeapSort implements SortUtil.Sort{ !9i,V{$c`"
:<s)QD
/* (non-Javadoc) +EcN[-~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i` Es7 }
*/ 9[|Ql
public void sort(int[] data) { Pe/cwKCI
MaxHeap h=new MaxHeap(); ]7ROCJ;
h.init(data); u|\Lb2Kb:
for(int i=0;i h.remove(); +"a .,-f!
System.arraycopy(h.queue,1,data,0,data.length); ~)}npS;
} D:llGdU#2
j]6j!.1
private static class MaxHeap{ ocy fU=}X
X LPO_tD
void init(int[] data){ "}|n;:r
this.queue=new int[data.length+1]; <UG}P \N
for(int i=0;i queue[++size]=data; `I<*R0Qe
fixUp(size); !E> *Mn
} ;y?,myO
} jj#K[@u
i
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private int size=0; 1P4jdp=~
oa+Rr&t'
private int[] queue; 0?ZJJdI3
_ 9Tv*@
public int get() { <?,o
{
return queue[1]; *;O$=PE
} ;*+jCL2F
/+Xv(B
public void remove() { ?T70C9
SortUtil.swap(queue,1,size--); }7vX4{Yn
fixDown(1); u|=_!$8
} `Y/DttjL
file://fixdown )oa6;=go
private void fixDown(int k) { &&|*GAjJ
int j; ow
~(k5k:
while ((j = k << 1) <= size) { 0W9,uC2:N
if (j < size %26amp;%26amp; queue[j] j++; ;|b
D@%@
if (queue[k]>queue[j]) file://不用交换 xF5q=%n
break; R1X9
SortUtil.swap(queue,j,k); Jk|c!,!
k = j; `Bnp/9q5
} \A _g
} +is;$1rq
private void fixUp(int k) { N>7INK
while (k > 1) { `R fhxzI
int j = k >> 1; cgm]{[f
if (queue[j]>queue[k]) j|KZ HH%dc
break; r<Ll>R
SortUtil.swap(queue,j,k); ge[f/"u
k = j; p}!rPd*
} Dq
Kk9s;6_
} f5Zx:g
CfoSow-
} Ip(
IGR"
S?*v p=
} -d6|D?}S
H
|Z9]+h)7
SortUtil: t*82^KDU
#5N#^#r"
package org.rut.util.algorithm; .ev'd&l.
^$24231^
import org.rut.util.algorithm.support.BubbleSort; '
V;cA$ $
import org.rut.util.algorithm.support.HeapSort; H6x~mZu_:T
import org.rut.util.algorithm.support.ImprovedMergeSort; @X"p"3V
import org.rut.util.algorithm.support.ImprovedQuickSort; \QstcsEt
import org.rut.util.algorithm.support.InsertSort; l[l('-f
import org.rut.util.algorithm.support.MergeSort; SPeSe/
import org.rut.util.algorithm.support.QuickSort; 6YQ&+4
import org.rut.util.algorithm.support.SelectionSort; sE-E\+
import org.rut.util.algorithm.support.ShellSort; [(5;jUmF@
!t{3IE
/** ]k_@F6 A
* @author treeroot D&/(Avx.
* @since 2006-2-2 ^~0\d;l_
* @version 1.0 v1QE|@
*/ fnG&29x
public class SortUtil { I7nt<l!
public final static int INSERT = 1; \D<rT)Tl
public final static int BUBBLE = 2; ~a4htj
public final static int SELECTION = 3; sYiegX`1c
public final static int SHELL = 4; }?^5\ot u
public final static int QUICK = 5; WsTbqR)W%
public final static int IMPROVED_QUICK = 6; ?7'uo$
public final static int MERGE = 7; d90B15]gv
public final static int IMPROVED_MERGE = 8; M&~3fRb4
public final static int HEAP = 9; Z[yQKy
OO]~\j
public static void sort(int[] data) { &p^S6h
sort(data, IMPROVED_QUICK); N't*e Ci
} kz(%8qi8&
private static String[] name={ @U_w:Q<9u
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" kV(}45i]s
}; 9l@VxX68M
`)&-;CMY
private static Sort[] impl=new Sort[]{ ddmTMfH
new InsertSort(), <bWhTNOb
new BubbleSort(), Q_euNoA0
new SelectionSort(), vAbMU
new ShellSort(), =GTltFqI1
new QuickSort(), ;M{ @23?`
new ImprovedQuickSort(), :kfHILi
new MergeSort(), gXZ.je)NM
new ImprovedMergeSort(), bBc<yaN
new HeapSort() 0R>M_|
}; [iwn"e
[bIdhG
public static String toString(int algorithm){ M])Y|}wv8
return name[algorithm-1]; ((\s4-
} VJS|H!CH
~(aQ!!H6
public static void sort(int[] data, int algorithm) { suN{)"
impl[algorithm-1].sort(data); =LL5E}xP
} B t-o:)pa
AKC';J
public static interface Sort { O7I:Y85i#O
public void sort(int[] data); 0PIC|
} E9;cd$}K
p[VBeO^%
public static void swap(int[] data, int i, int j) { R)"Ds}1G
int temp = data; v9(->X'
data = data[j]; 4*g`!~)
data[j] = temp; Pdmfn8I]%
} :[m;#b
} rJ4O_a5/