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。 cYC@@?
插入排序: ^^9O9]
n(}W[bZ4
package org.rut.util.algorithm.support; ,ln=kj
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import org.rut.util.algorithm.SortUtil; T{A_]2
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/** tdCD!rV`{
* @author treeroot TFQX}kr]
* @since 2006-2-2 b1*5#2rs.
* @version 1.0 jc$gy`,F
*/ "^Ax}Jr
public class InsertSort implements SortUtil.Sort{ ajy+%sXf=
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/* (non-Javadoc) \CY_nn|&g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kH.W17D~
*/ Vr<eU>W
public void sort(int[] data) { U.$7=Zl8t
int temp; )K.'sX{B
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8]`LRzM
} wNfWHaH" m
} + a,x
} }akF=/M
wN+3OPM
} tL#]G?0d
7;8#iS/
冒泡排序: CDT%/9+-
]8m_+:`=
package org.rut.util.algorithm.support; R5,ISD
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import org.rut.util.algorithm.SortUtil; (}4]U=/nV
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/** WZ A8D0[
* @author treeroot [X\<C '<
* @since 2006-2-2 ~+~^c|
* @version 1.0 )B!64'|M
*/ F?!X<N{
public class BubbleSort implements SortUtil.Sort{ gG,"wzj
ndXUR4
/* (non-Javadoc) k"L?("~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2Hp<(
*/ a,YU)v^
public void sort(int[] data) { <5xlP:Cx
int temp; L'@@ewA
for(int i=0;i for(int j=data.length-1;j>i;j--){ C-TATH%f^
if(data[j] SortUtil.swap(data,j,j-1); t0"2Si
} b~u53
} Qp5YS
} j1sgvh]D
} $Lc-}m9n
}jI=*
} .szc-r{
9R1S20O
选择排序: %8]~+#]p
1UwpLd
package org.rut.util.algorithm.support; q=J8SvSRl
rQ:+LVfXjA
import org.rut.util.algorithm.SortUtil; Z{ AF8r
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/** A4mnm6Tf
* @author treeroot Ltrw)H}
* @since 2006-2-2 PX$_."WA
* @version 1.0 AB0>|.
*/ +*')0I
public class SelectionSort implements SortUtil.Sort { I&s!} $cD
d>YX18'<Q
/* px~ :'U
* (non-Javadoc) sq;nUA=
* 4r-CF#o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Es^=&2''
*/ t91z<Y|
public void sort(int[] data) { 5_yu4{@;y
int temp; Z<4Du
for (int i = 0; i < data.length; i++) { U~l.%mui
int lowIndex = i; b&_u+g
for (int j = data.length - 1; j > i; j--) { FhAYk
if (data[j] < data[lowIndex]) { Dx*tolF
lowIndex = j; !=B=1th4
} r1R\cor
} tT`{xM
SortUtil.swap(data,i,lowIndex); [izP1A$r#Q
} ()`cW>[
} 7+c}D>/`:
Ce.*yO<-
} pLtAusx
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Shell排序: E8Y(C_:s
|jw{7\+
package org.rut.util.algorithm.support; v9K=\ j
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import org.rut.util.algorithm.SortUtil; }u&,;]
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/** <3WaFi u
* @author treeroot rT/4w#_3
* @since 2006-2-2 U3rpmml
* @version 1.0 R GC DC*\
*/ 3zsjL=ta
public class ShellSort implements SortUtil.Sort{ 032PR;]
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/* (non-Javadoc) _u QxrB"9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .cCB,re
*/ tFrNnbmlQ
public void sort(int[] data) { 8;+dlWp
for(int i=data.length/2;i>2;i/=2){ _WB*ArR
for(int j=0;j insertSort(data,j,i); hG! |ts
} d xk~
} gg+!e#-X
insertSort(data,0,1); DMpNmF>
} O@7={)6qc
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/** ^Sj*
* @param data $-l\&V++F
* @param j b[;Zl<
* @param i Bm:N@wg
*/ %}ASll0uq
private void insertSort(int[] data, int start, int inc) { NxzRVsNF
int temp; mJFFst,
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /vrjg)fer
} J,,+JoD
} }:9UI
} yT pvKCC
m14OPZ<3?-
} %5-
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快速排序: -xMM}r
y
daN#6e4Z+;
package org.rut.util.algorithm.support; NU |vtD
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import org.rut.util.algorithm.SortUtil; EhK~S(r^
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/** H;kk:s'
* @author treeroot @(I)]Ca%O
* @since 2006-2-2 )sBbmct_S
* @version 1.0 r3mQoTvnv
*/ vI1UFD
D
public class QuickSort implements SortUtil.Sort{ 5nh:S0M6V
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/* (non-Javadoc) e,I{+^P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >X0c:pPu
*/ T*v@hbJ
public void sort(int[] data) { b_%W*Q
quickSort(data,0,data.length-1); C=!YcJ9
} p({)ZU3
private void quickSort(int[] data,int i,int j){ n.tJ-l5[
int pivotIndex=(i+j)/2; O9jpt>:kZ
file://swap GJP\vsaQ
SortUtil.swap(data,pivotIndex,j); fNNik7
vgbk
{
int k=partition(data,i-1,j,data[j]); 6,:`esl
SortUtil.swap(data,k,j); X0+M|8:
if((k-i)>1) quickSort(data,i,k-1); }\wTV*n`X
if((j-k)>1) quickSort(data,k+1,j); :j4i(qcF
C
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} [(eO_I5ep
/** Qe;j_ BH
* @param data ptvM>zw'~g
* @param i BzyzOtBp3L
* @param j 0$e]?]X6
* @return y+K21(z.
*/ &XH{,fv$
private int partition(int[] data, int l, int r,int pivot) { S)~Riuy$
do{ l!9G
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]xf|xs
SortUtil.swap(data,l,r); ,.PW
qfb
} zm`^=cV
while(l SortUtil.swap(data,l,r); {xS\CC(g
return l; ~ @Au <
} n3LCQ:]Tf
xK;WJm"
} elw}(l<F
E])X$:P?
改进后的快速排序: WTZr{)e
}2i3
package org.rut.util.algorithm.support; tW7*(D
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import org.rut.util.algorithm.SortUtil; =`y.L5
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/** 8jxs%N,aI
* @author treeroot PN@[k:5(
* @since 2006-2-2 I~:
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* @version 1.0
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*/ A"`(^#a
public class ImprovedQuickSort implements SortUtil.Sort { .f~x*@
q9mYhT/Im
private static int MAX_STACK_SIZE=4096; FMBzTD
private static int THRESHOLD=10; ~IP3~m D
/* (non-Javadoc) ]'a9>o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <+2M,fq+
*/ "Ca?liy
public void sort(int[] data) { 2 -
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int[] stack=new int[MAX_STACK_SIZE]; *q/oS8vavd
I_/kJ#7vj
int top=-1; 3[E)/~-
int pivot; // \UthOT
int pivotIndex,l,r; &:ib>EB03=
|Lz:i+;
stack[++top]=0; wtL_c
stack[++top]=data.length-1; cr_Q,*
rBUdHd9
while(top>0){ Ikbz3]F^V
int j=stack[top--]; =W
Q_5}
int i=stack[top--]; 0o+2]`q)Q
V9o_Q
pivotIndex=(i+j)/2; >kJEa8
pivot=data[pivotIndex]; h
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V/jEMJNks
SortUtil.swap(data,pivotIndex,j); Q<F-l.q
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file://partition ;2=H7dq
l=i-1; zXH CP.Rmg
r=j; (!0=~x|Z[
do{ E?/Bf@a28=
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SmJ6Fm6
SortUtil.swap(data,l,r); D; 0iNcit
} <Hq|<^_K
while(l SortUtil.swap(data,l,r); X(;,-7Jw
SortUtil.swap(data,l,j); TLk=HGw
u\-f\Z7
if((l-i)>THRESHOLD){ tE: m&
;I
stack[++top]=i; %TA3o71
stack[++top]=l-1; fEl,jA
} 5$|wW}SA
if((j-l)>THRESHOLD){ }FTyRHD|
stack[++top]=l+1; `Al5(0Q
stack[++top]=j; nD$CY K
} ?`oCc[hY
p7A&r:qq#
} }"'^.FG^_
file://new InsertSort().sort(data); yn[^!GuJ_
insertSort(data); 'b*
yYX<
} hl[!4#b]K
/** ci@U
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* @param data ;J[1S
*/ yBPaGZ{f
private void insertSort(int[] data) { cIO7RD$8
int temp; Ba\l`$%X
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T`;>Kq:s
} }lk_Oe1
} L.[ H
} ueiXY|
I]]3=?Y
} 1>"K<6b+
A&2 )iQ
归并排序: CE$c/d[N.
wPn#>\/L
package org.rut.util.algorithm.support; <.0-K_
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import org.rut.util.algorithm.SortUtil; XM$HHk}L;
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/** O6^>L0'
* @author treeroot i'5Q.uX
* @since 2006-2-2 _U.D*f<3)
* @version 1.0 n+M:0{Y|
*/ .O{2]e$
public class MergeSort implements SortUtil.Sort{ LsnM5GU7
Ocq.<#||H
/* (non-Javadoc) _(}{=:M?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k;w1y(
*/ n#
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public void sort(int[] data) { u6AReL'f
int[] temp=new int[data.length]; IRemF@
mergeSort(data,temp,0,data.length-1); <|NP!eMsw8
} 4eym$UWw
;[]{O5TB
private void mergeSort(int[] data,int[] temp,int l,int r){ :!M/9D*}0
int mid=(l+r)/2; #ra~Yb-F
if(l==r) return ; V fJYYR
mergeSort(data,temp,l,mid); vs/.'yD/C
mergeSort(data,temp,mid+1,r); vr|9NP]v
for(int i=l;i<=r;i++){ !_VKJZuH
temp=data; Lt+ Cm$3
} ngprTMO$&
int i1=l; yVvO!
int i2=mid+1; JpEE'#r|
for(int cur=l;cur<=r;cur++){ y]B?{m``6
if(i1==mid+1) 7u!i)<pn
data[cur]=temp[i2++]; )z/+!y
else if(i2>r) P {x`eD0
data[cur]=temp[i1++]; GqXnOmk
else if(temp[i1] data[cur]=temp[i1++]; {H+~4XG
else >;eWgQ6V
data[cur]=temp[i2++]; aU,Zjm7fp
} (c ?OcwTH
} \f6SA{vR|
XYtDovbv&
} N<1u,[+
c
rPEr
改进后的归并排序: ~F^(O{EG
QAigbSn]
package org.rut.util.algorithm.support; G[1:<Vg8
sr+*
q6W
import org.rut.util.algorithm.SortUtil; Q#
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_-$"F>
/** lCBb0k2
* @author treeroot ?(el6 J}
* @since 2006-2-2 sas}k7m"
* @version 1.0 [R[]&\W
*/ =EI>@Y"
public class ImprovedMergeSort implements SortUtil.Sort { \kU0D
w yP|#Z\
private static final int THRESHOLD = 10; TU4"7]/{M
yrOWC
/* `9BZ))Pg
* (non-Javadoc) ES[H^}|Gi
* ?IR]y-r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LeDty_
*/ F.2<G.9
public void sort(int[] data) { 45` i
int[] temp=new int[data.length]; fvn`$
mergeSort(data,temp,0,data.length-1); "c8
-xG
} O4w6\y3U
+eSNwR=
private void mergeSort(int[] data, int[] temp, int l, int r) { R57>z`;
int i, j, k; H`#{zt);
int mid = (l + r) / 2; r(;sX
if (l == r) ]v&)mK]n=o
return; #zflU99d
if ((mid - l) >= THRESHOLD) yd#SB) &
mergeSort(data, temp, l, mid); u~WBu|
else h"Qp e'D}
insertSort(data, l, mid - l + 1); $+CKy>
if ((r - mid) > THRESHOLD) `|maf=SnY5
mergeSort(data, temp, mid + 1, r); <d89eV+
else )Il)
H
insertSort(data, mid + 1, r - mid); q<.m@q
9u6GeK~G
for (i = l; i <= mid; i++) { g\_J
temp = data; oYOR%'0*m+
} qWz%sT?C3L
for (j = 1; j <= r - mid; j++) { c>I(6$
temp[r - j + 1] = data[j + mid]; T<:mG%Is
} *AK{GfP_
int a = temp[l]; .g/PWEr\I
int b = temp[r]; v@m2c_,
for (i = l, j = r, k = l; k <= r; k++) { Nfv.v1Tt+
if (a < b) { RuyqB>[o
data[k] = temp[i++]; -rg >y!L
a = temp; e_U1}{=t
} else { `"@Pr,L
data[k] = temp[j--]; MZJ@qIg[Y
b = temp[j]; `Vph=`0
} d\c?sYLv
} ZC7ZlL_
} 'PO+P~|oa&
LtrE;+%2oz
/** |q+3X)Y
* @param data m2sf]-?Y
* @param l HNXMM
* @param i oU|yBs1
*/ E^ub8
private void insertSort(int[] data, int start, int len) { \S5YS2,P
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Y8i'=Po%,
} p. %lE!v
} vZ6_/ew8
} L0^rw|Z%'
} n]nb+_-97
T)CEcz
堆排序: ]h3{MTr/
s?Wkh`b
package org.rut.util.algorithm.support; "pA24Ze
y [jck:
import org.rut.util.algorithm.SortUtil; r
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/** "aT"o
* @author treeroot U"T>L
* @since 2006-2-2 506AvD
* @version 1.0 =NNA7E7c
*/ =w,cdU*
public class HeapSort implements SortUtil.Sort{ R?Ys%~5
6+.8nx:9X
/* (non-Javadoc) *B*dWMh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |V
dr/'
*/ ^U;r>[T9h
public void sort(int[] data) { 'Dx_n7&=
MaxHeap h=new MaxHeap(); (?ofL|Cg(
h.init(data); a +lTAe
for(int i=0;i h.remove(); {G i:W/jJ
System.arraycopy(h.queue,1,data,0,data.length); zNh$d;(O$^
} b%_[\((
g[D`.
private static class MaxHeap{ * .P3fVlZ
`21$e
void init(int[] data){ <&m
`)FJ
this.queue=new int[data.length+1]; @C"w
1}
for(int i=0;i queue[++size]=data; m&I5~kD
fixUp(size); d>bS)
} WoSJp5By$
} )BX-Y@fpA
g@s'-8}X^
private int size=0; 69C>oX
Xhk_h2F[
private int[] queue; -guVl4 V
xA#'%|"
public int get() { fs3jPHZJ#
return queue[1]; _VFL}<i
} 5#}wI~U;
RI0+9YJ
public void remove() { g|
M@/Dl
SortUtil.swap(queue,1,size--); ^hIKDc!.m
fixDown(1); 4SGF8y@WU
} t=6Wk4
file://fixdown SHt#%3EU
private void fixDown(int k) { f<K7m
int j; j87IxB?o
while ((j = k << 1) <= size) { 1v"r8=Wt
if (j < size %26amp;%26amp; queue[j] j++; vkg."G:=
if (queue[k]>queue[j]) file://不用交换 uJ_"gPO
break; .=% ,DT"
SortUtil.swap(queue,j,k); (Gp|K6
k = j; z<Y
>phc
} >^V3Z{;
} +f]\>{o4
private void fixUp(int k) { 7nOn^f D
while (k > 1) { AOVoOd+6
int j = k >> 1; ]>'yt #]
if (queue[j]>queue[k]) 3!<} -sW4
break; B_uAa5'
SortUtil.swap(queue,j,k); oHj64fE9
k = j; u4,b%h.
} @"$rR+r'
} Ymr\8CG/
5^GFN*poig
} VQ]MJjvb
$ix*xm. 4m
} DUOSL
,`nl";Zc
SortUtil: qW(_0<E
$KGpcl
package org.rut.util.algorithm; mzoNXf:x
/c9%|<O%
import org.rut.util.algorithm.support.BubbleSort; 8QaF(?
import org.rut.util.algorithm.support.HeapSort; AXOR<Ns`
import org.rut.util.algorithm.support.ImprovedMergeSort; @[] A&)B
import org.rut.util.algorithm.support.ImprovedQuickSort; q oJ4w7
import org.rut.util.algorithm.support.InsertSort; Ze>Pg.k+
import org.rut.util.algorithm.support.MergeSort; 'RjMwJy{
import org.rut.util.algorithm.support.QuickSort; M~ ^ {S[o
import org.rut.util.algorithm.support.SelectionSort; ZPolE_P7
import org.rut.util.algorithm.support.ShellSort; #&jr9RB
9'S~zG%{
/** Uk0]A
* @author treeroot dtT2h>h9
* @since 2006-2-2 kn 1+lF@
* @version 1.0 A_\ZY0Xt
*/ sJ(q.FRM'
public class SortUtil { ?=lnYD j
public final static int INSERT = 1; ;N/=)m
public final static int BUBBLE = 2; !s:v UY58
public final static int SELECTION = 3; H%:u9DlEK/
public final static int SHELL = 4; <(<19t5 .
public final static int QUICK = 5; 5NECb4FG
public final static int IMPROVED_QUICK = 6; .1 =8c\%
public final static int MERGE = 7;
UW/{q`)
public final static int IMPROVED_MERGE = 8; 7Yjxx+X9
public final static int HEAP = 9; 05>xQx?"m4
FII>6c
public static void sort(int[] data) { *;I F^u1
sort(data, IMPROVED_QUICK); >RMp`HxDf
} r31H Zx1^
private static String[] name={ _U@;Z*(%vh
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" > =Z@)PAe
}; l.wf= /
/Vy8%
private static Sort[] impl=new Sort[]{ .O+qtk!
new InsertSort(), ]CIZF,
new BubbleSort(), @`X-=GCl
new SelectionSort(), ;<yVJox
new ShellSort(), dqvgy yq
new QuickSort(), -S(_ZbeN
new ImprovedQuickSort(), VN1a\
new MergeSort(), }M I9?\"q
new ImprovedMergeSort(), cLD-,v;c
new HeapSort() i%R2#F7I
}; :8<\]}J
U.@j!UrZ
public static String toString(int algorithm){ yfD)|lK
return name[algorithm-1]; G2x5% `
} N>A*N,+
#(`@D7S"
public static void sort(int[] data, int algorithm) { h""a#n)q}`
impl[algorithm-1].sort(data); @e/40l|X
} G)E#wh_S^
m ) 2t<
public static interface Sort { &Z^,-Y
public void sort(int[] data); {=NHidi~
} ,6%{9oW9Z:
X|WAUp?
public static void swap(int[] data, int i, int j) { y&.[Nt '+
int temp = data; zDk^^'
data = data[j]; v$`AN4)}
data[j] = temp; `[+nz
rLkO
} y/}>)o4Q
} t7%!~s=,M