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。 hOwb
插入排序: ?$|tT\SFV
Byc;r-Q5V
package org.rut.util.algorithm.support; uu.X>agg
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import org.rut.util.algorithm.SortUtil; A|\A|8=b
/** FJc8g6M
* @author treeroot N1Vj;-
* @since 2006-2-2 %JM$]
* @version 1.0 AioW*`[WjA
*/ E7L>5z
public class InsertSort implements SortUtil.Sort{ $|=|"/
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/* (non-Javadoc) V
vrsf6l]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,<U=
7<NU
*/ MJ JC6:
public void sort(int[] data) { 4Hz3KKu
int temp; J@2jx4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K1 "HJsj
} AkQ(V
} dHDtY$/_
} ]`$6=)_X
CtCReH03
} kH eD(Ea
6Cy Byj&
冒泡排序: &V?+Y2
5nx*D"
package org.rut.util.algorithm.support; =FzmifTc
D`p2a eI
import org.rut.util.algorithm.SortUtil; |KhpF1/(
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/** dHY@V>D'-
* @author treeroot xRWfZ3E#
* @since 2006-2-2 jr`T6!\
* @version 1.0 w5i*pOG)Z
*/ !f/K:CK|
public class BubbleSort implements SortUtil.Sort{ C1;uAw?\
=8l' [
/* (non-Javadoc) f!+d*9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -U2Su|:\N8
*/ &MX&5@
Vu
public void sort(int[] data) { sccLP_#Z
int temp; %Ik5|\ob?
for(int i=0;i for(int j=data.length-1;j>i;j--){ NuO@Nr
if(data[j] SortUtil.swap(data,j,j-1); @wXYza0|d
} t%mi#Gh(
} ?*~
~Ok
} |KJGM1]G
} C/!P&`<6
UT@Qo}:
} y;ey(
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选择排序: $D`Kz*/.
'@ 24<T]
package org.rut.util.algorithm.support; qg j;E=7
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import org.rut.util.algorithm.SortUtil; F42^Uoaz
d*u3]&?x&f
/** N n_b
* @author treeroot i{}m 8K)
* @since 2006-2-2 %Ok#~>c
* @version 1.0 \/dOv[
*/ =>S[Dh
public class SelectionSort implements SortUtil.Sort { &kf \[|y
iw.F8[})
/* Mprn7=I{Tg
* (non-Javadoc) }G(#jOYk
* xz`0V}dPl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^d>m`*px
*/ klmbbLce
public void sort(int[] data) { m!INbIh
int temp; zq5N@dF
for (int i = 0; i < data.length; i++) { UChLWf|'
int lowIndex = i; M\ wCZG
for (int j = data.length - 1; j > i; j--) { :"Vmy.xq
if (data[j] < data[lowIndex]) { &OvA[<qT
lowIndex = j; #x;d+Q@
} f3;[ZS
} 3
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SortUtil.swap(data,i,lowIndex); dM"5obEb
} <&+0[9x
} v%#@.D!)
T2?.o.&u
} p*jH5h cy
{#=o4~u%;H
Shell排序: ,A#gF_8
"Z';nmv'N
package org.rut.util.algorithm.support; ;Gu(Yoa}y
Ut%{pc 7^F
import org.rut.util.algorithm.SortUtil; 0#5&*
9G1ZW=83
/** z3^gufOkQ
* @author treeroot =BD|uIR
* @since 2006-2-2 &G-dxET]
* @version 1.0 ^S|}<6~6b
*/ M )v='O<H8
public class ShellSort implements SortUtil.Sort{ FrRUAoFO
TCgW^iu
/* (non-Javadoc) Dl?:Mh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cI6Td*vM
*/ 1k%HGQM{
public void sort(int[] data) {
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for(int i=data.length/2;i>2;i/=2){ V2yX;u
for(int j=0;j insertSort(data,j,i); {p$X*2ReB
} do l8O
} IUG}Q7w5
insertSort(data,0,1); !h^_2IX
} z+c8G
9+Wf*:*EW
/** 2`V0k.$?p
* @param data ey:%Zy
[~
* @param j =Q# (2
* @param i n"I{aJ]K
*/ r0<zy_d'
private void insertSort(int[] data, int start, int inc) { Fbw.Y6
int temp; DRVvC~M-,
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Tkj
F/zv
} 02[*b
} 8qUNh#
} x45F-w{
8y4t9V
} IR8qFWDZ
nwi8>MG
快速排序: 5IRUG)Icr
bhKe"#m|S
package org.rut.util.algorithm.support; =+4om*
y=}o|/5"
import org.rut.util.algorithm.SortUtil; GCrsf
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/** Gl4f:`
* @author treeroot T'5MO\
* @since 2006-2-2 rwpH9\GE
* @version 1.0 0|mCk
*/ b:x~Jz#%2
public class QuickSort implements SortUtil.Sort{ #,SPV&
.sZ"|j9m
/* (non-Javadoc) HC$}KoZkC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m*14n_m'
*/ X|Nb81M
public void sort(int[] data) { LP>GM=S#"
quickSort(data,0,data.length-1); ,H]S-uK~
} $F@ ,,*
private void quickSort(int[] data,int i,int j){ 7!
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int pivotIndex=(i+j)/2; G4EuW *~
file://swap b}ODc]3
SortUtil.swap(data,pivotIndex,j); gS!zaD7Nr
!!)NER-dv
int k=partition(data,i-1,j,data[j]); rDLgQ{Sea
SortUtil.swap(data,k,j); }4q1"iMlO
if((k-i)>1) quickSort(data,i,k-1); 76cT}l&.h8
if((j-k)>1) quickSort(data,k+1,j); !wo
'On%p|s)H
} XrGP]k6.^
/** I$ ?.9&.&
* @param data Hw,@oOh.
* @param i dTQW /kAHQ
* @param j CE|rn8MB
* @return :;w#l"e7<
*/ n}8}:3"
private int partition(int[] data, int l, int r,int pivot) { OyIIJ!(
do{ |u#7@&N1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j;EH[3
SortUtil.swap(data,l,r); OgCz[QXr_
} Lwo9s)j<e
while(l SortUtil.swap(data,l,r); CTQJ=R"
return l; }`+9ie7]/
} Fzy5k?R
bg^<e}{<H
} jaQH1^~l/-
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改进后的快速排序: gCx#&aXS
ggy9euWV
package org.rut.util.algorithm.support; 1/J6<FVq
@jKB[S;JSn
import org.rut.util.algorithm.SortUtil; a:F\4x=
/])P{"v$^
/** EvF[h:C2
* @author treeroot @iN"]GFjS
* @since 2006-2-2 \%&eDE 0
* @version 1.0 @DSKa`
*/ -[[(Zx
public class ImprovedQuickSort implements SortUtil.Sort { l\ VrD2j8
k +Cwnp
private static int MAX_STACK_SIZE=4096; P[tYu:
private static int THRESHOLD=10; QSOG(}w
/* (non-Javadoc) I5ZM U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P+DIo7VTX
*/ Yh;A)Np
public void sort(int[] data) { 664D5f#EJ
int[] stack=new int[MAX_STACK_SIZE]; e/}4Pt
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int top=-1; #@F.wV0
int pivot; y2=yh30L0E
int pivotIndex,l,r; Z}.ZTEB
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stack[++top]=0; .AZwVP<
stack[++top]=data.length-1; iU AY
!@ {sM6U
while(top>0){ oXUb_/
int j=stack[top--]; /@I`V?Q!a
int i=stack[top--]; qQ8+gZG$R
1x%B`d
pivotIndex=(i+j)/2; 'c# }^@G
pivot=data[pivotIndex]; $=) Pky-~
?$l|];m)-
SortUtil.swap(data,pivotIndex,j); rR
8 6D
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file://partition 73Hm:"Eqd
l=i-1; P>(FCX
r=j; %Aqf=R_^
do{ $tej~xZK
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2f620
SortUtil.swap(data,l,r); bc3`x1)\^
} {8h[Bd
while(l SortUtil.swap(data,l,r); Xj~%kPe
SortUtil.swap(data,l,j); @0d"^
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if((l-i)>THRESHOLD){ e5
}amrz
stack[++top]=i; B{*{9!(l9
stack[++top]=l-1; IdK<:)Q
} W/AF
if((j-l)>THRESHOLD){ 6q6xqr:W
stack[++top]=l+1; jFUpf.v2
stack[++top]=j; 8QoxU"
c&
} ,~DV0#"
niKfat?
} 2TNK
file://new InsertSort().sort(data); PjH'5Y
insertSort(data); ?)186dp
} FSn3p}FVa
/** AV7#,+p%G
* @param data 5OzEY7K)
*/ 0^sY>N"
private void insertSort(int[] data) { G]4Ca5;Z!N
int temp; 1m#.f=u{R
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {/H<_
} O1S7t)ag
} 5doi4b>]!
} ^
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} O9p s?{g
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归并排序: N9-7YQ`D
L!lmy&1
package org.rut.util.algorithm.support; ;o9ixmT<-o
,w3-*z
import org.rut.util.algorithm.SortUtil; f:ObI
doOuc4
/** kDMvTVd
* @author treeroot IEMa/[n/
* @since 2006-2-2 sQac%.H;`U
* @version 1.0 %l!?d`?
*/ dGn0-l'q
public class MergeSort implements SortUtil.Sort{ `SsoRPW&$
dpw-a4o}
/* (non-Javadoc) .Zv~a&GE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t15{>>f4>
*/ #Uu,yHMv:;
public void sort(int[] data) { BEvY&3%l
int[] temp=new int[data.length]; HFZ'xp|3dn
mergeSort(data,temp,0,data.length-1); oDMPYkpTu
} ]i$y;]f
&hI!mo
private void mergeSort(int[] data,int[] temp,int l,int r){ _ERtL5^
int mid=(l+r)/2; rB$~,q&.V
if(l==r) return ; _huJ*W7lR
mergeSort(data,temp,l,mid); >kK@tJn
mergeSort(data,temp,mid+1,r); _&BK4?H@b
for(int i=l;i<=r;i++){ P:4"~]}
temp=data; lAP k/G
} SL- 2 ^\R
int i1=l; XGR2L
DR
int i2=mid+1; 3ai[ r
for(int cur=l;cur<=r;cur++){ N68$b#9Ry
if(i1==mid+1) u9OY
Jo
data[cur]=temp[i2++]; 1vj@qw3
else if(i2>r) MmN{f~Kq9
data[cur]=temp[i1++]; @6>Q&GYqt
else if(temp[i1] data[cur]=temp[i1++]; qqf`z,u
else /DHgwpJ
data[cur]=temp[i2++]; rM,e$
} gHBv Q1g
} kk-<+R2
'NhQBk
} e=OHO,74z"
.cHgYHa
改进后的归并排序: GHcx@||C?
ZyUcL_
package org.rut.util.algorithm.support; m7'<k1#"Y
:@[\(:
import org.rut.util.algorithm.SortUtil; ~4{q
V2Vr7v=Y"
/** ~~OFymQ%?q
* @author treeroot Z)`)9]*
* @since 2006-2-2 OB(oOPH
* @version 1.0 \Mg_Q$
*/ @./h$]6
public class ImprovedMergeSort implements SortUtil.Sort { wc;n=
%
kL*P 3
0
private static final int THRESHOLD = 10; S\).0goOW
+)sX8zb*gY
/* W\~^*ny
P6
* (non-Javadoc) (?r,pAc:
* 90<g=B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *H
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*/ ApCU|*r)
public void sort(int[] data) { 2IJK0w@
int[] temp=new int[data.length]; Y~I<L ocv
mergeSort(data,temp,0,data.length-1); EnM
} rL{R=0
.T'@P7Hdx
private void mergeSort(int[] data, int[] temp, int l, int r) { ]c/E7|0Q
int i, j, k; ODxZO3
int mid = (l + r) / 2; !RI _Uph
if (l == r) jzbq{#
return; _?
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if ((mid - l) >= THRESHOLD) ljKIxSvCFp
mergeSort(data, temp, l, mid); ;o9h|LRs
else Du+W7]yCl
insertSort(data, l, mid - l + 1); nq M7Is
if ((r - mid) > THRESHOLD) MVYd\)\o
mergeSort(data, temp, mid + 1, r); U] LDi8
else dJ"M#X!Zu
insertSort(data, mid + 1, r - mid); ``-N2U5
$v0,)AL i
for (i = l; i <= mid; i++) { yix[zfQt0
temp = data; +=3=% %?C
} q)k:pQ
for (j = 1; j <= r - mid; j++) { 3z8i0
temp[r - j + 1] = data[j + mid]; Qm%PpQ^Lz3
} N''QQBUD
int a = temp[l]; m@Z#
int b = temp[r]; OIcXelS:@k
for (i = l, j = r, k = l; k <= r; k++) { /WuYg
OI
if (a < b) { IzP,)!EE
data[k] = temp[i++]; M-o'`e'
a = temp; y)G-6sZ/
} else { n#(pT3&
data[k] = temp[j--]; !jj`Ht)
b = temp[j]; [l23b{
} 2cMCZuO
} @5>#<LV=E#
} x)PW4{3qR
$^]K611w9
/** J&xZN8jW
* @param data ;*(-8R/
* @param l *1)>He$qL
* @param i i>m%hbAk
*/ PYkhY;*
private void insertSort(int[] data, int start, int len) { +9_Y0<C
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); S_ATsG*(
} zxyl+tU &
} )Qbd/zd\U
} )^j_O^T5
} G3.aw
">H*InF
堆排序: 5UEZpxnv
/_C2O"h
package org.rut.util.algorithm.support; &,nv+>D
{EgSjxfmw
import org.rut.util.algorithm.SortUtil; eADCT
RTOA'|[0M
/** @Cj!MZ=T
* @author treeroot F? #3
* @since 2006-2-2 {;yO3];Hqw
* @version 1.0 QYH-"-)
*/ +}:Z9AAMy
public class HeapSort implements SortUtil.Sort{ 1NZ"\9=U
Y
;Ym=n'
/* (non-Javadoc) 5zl+M`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #ArrQeO 5_
*/ iU)I"#\l'k
public void sort(int[] data) { f|d~=\0y
MaxHeap h=new MaxHeap(); eaw!5]huu
h.init(data); xl}rdnf}
for(int i=0;i h.remove(); _7c3=f83
System.arraycopy(h.queue,1,data,0,data.length); Ymut]`dX
} =KE7NXu]-
[|]J8o@u^
private static class MaxHeap{ YI0
wr1N
RY-iFydPc
void init(int[] data){ -U|c~Cqc
this.queue=new int[data.length+1]; "HOZ2_(o
for(int i=0;i queue[++size]=data; 3smkY
fixUp(size); WogUILB
} u6|C3,!z"
} V DFgu
r%,?uim#
private int size=0; ]N>ZOV,>
}M07-qIX{
private int[] queue;
s*uA3}j
N?\X2J1
public int get() { vhe Y
F@
return queue[1]; is.t,&H4P]
} {oQs*`=l>
@|gG3
public void remove() { -&/?&{Q0
SortUtil.swap(queue,1,size--); x9lA';})
fixDown(1); Yh<F-WOo2
} P{Nvt/%
file://fixdown q"d9C)Md
private void fixDown(int k) { osp~)icun
int j; !I7$e&Uz@
while ((j = k << 1) <= size) { F`D$bE;|
if (j < size %26amp;%26amp; queue[j] j++;
x ;DoQx
if (queue[k]>queue[j]) file://不用交换 O& Y;/$w
break; 4.9qB
SortUtil.swap(queue,j,k); [LVXXjkFI
k = j; '6N)sqTR
} t3L>@NWG
} ing'' _
private void fixUp(int k) { yR$_ZXsd
while (k > 1) { J= A)]YE
int j = k >> 1; @?B+|*cm
if (queue[j]>queue[k]) `d <`>
break; NaR} 0
SortUtil.swap(queue,j,k); d)
-(C1f
k = j; tU4#7b:Y
} Ez1eGPVr
} ,%pCcM)
8h]
TI_
} _c>iux;
^ :VH?I=
} >}SEU-7&\
f 3UCELJ
SortUtil: !vz'zy)7
LnR>!0:c
package org.rut.util.algorithm; (\:Rnl
1/$PxQ
import org.rut.util.algorithm.support.BubbleSort; V.B@@ ;
import org.rut.util.algorithm.support.HeapSort; VEps|d3,,
import org.rut.util.algorithm.support.ImprovedMergeSort; lZk
z\
import org.rut.util.algorithm.support.ImprovedQuickSort; %A zy#m
import org.rut.util.algorithm.support.InsertSort; Ts!'>_<Je
import org.rut.util.algorithm.support.MergeSort; (~~m 8VJ>
import org.rut.util.algorithm.support.QuickSort; n Bm ]?
import org.rut.util.algorithm.support.SelectionSort; 1l-5H7^w2?
import org.rut.util.algorithm.support.ShellSort; :1 +Aj
(
{!Qu(%
/** :8b'HhjM
* @author treeroot qT#e
-.G
* @since 2006-2-2 &d6@SQ
* @version 1.0 ::Zo` vP
*/ ;yNc7Vl
public class SortUtil { l>6tEOXt
public final static int INSERT = 1; /
public final static int BUBBLE = 2; }UyQGRZ=
public final static int SELECTION = 3; 5>}$]d/o
public final static int SHELL = 4; .SC*! ,
public final static int QUICK = 5; Lu#q o^
public final static int IMPROVED_QUICK = 6; oc1BOW z
public final static int MERGE = 7; qvn.uujYS
public final static int IMPROVED_MERGE = 8; GxdAOiq;
public final static int HEAP = 9; G+dq
*/
"L3mW=!*
public static void sort(int[] data) { ytttF5-
sort(data, IMPROVED_QUICK); Xs2}n^#i
} uj.i(Us
private static String[] name={ s#?ZwD,=
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9c^ ,v_W@
}; 3aW<FSgP
Lt*P&
private static Sort[] impl=new Sort[]{ &=lc]sk
new InsertSort(), =:rg1wo"c
new BubbleSort(), @7 Ry{,A
new SelectionSort(), ACyK#5E
new ShellSort(), zYzV!s2^
new QuickSort(), %]+R>+
new ImprovedQuickSort(), 4!dc/K
new MergeSort(), Ge?Wmq>
new ImprovedMergeSort(), C8m 9H8Qm
new HeapSort() Qx)b4~F?
}; R'Jrbe|
;e?M;-
public static String toString(int algorithm){ K1@Pt}
return name[algorithm-1]; A3eCI
} o=Vs)8W
.!3e$mhV
public static void sort(int[] data, int algorithm) { ZJ3g,dc
impl[algorithm-1].sort(data); bWTfP8gT
} =F+v+zP7P
V,-we|"
public static interface Sort { | N/d}
public void sort(int[] data); <K0epED
} !Se0&Ob
G^.N$wcv
public static void swap(int[] data, int i, int j) { JI>Y?1i0O
int temp = data; rqjq}L )
data = data[j]; D40 vCax^J
data[j] = temp; gH//@`6
} 81Z;hO"~
} R,3cJ
Y_%