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。 ]19VEH
插入排序: {G:y?q'z
L9D`hefz
package org.rut.util.algorithm.support; d7X&3L%Oq
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import org.rut.util.algorithm.SortUtil; `R[ZY!=+
/** &&X,1/
* @author treeroot ,JV0ib,
* @since 2006-2-2 RU:Rt'
* @version 1.0 e /JQ #A
*/ '+cI W(F?
public class InsertSort implements SortUtil.Sort{ y~
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/* (non-Javadoc) ssi7)0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @yaFN>w
*/ B ;1qy[
public void sort(int[] data) { 85GIEUvH/
int temp; &[.`xZ(|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }Q/onBt
} AC)
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} jV3PTU
} =^nb+}Nz(
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} dw
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冒泡排序: H$(bSw$
zN4OrG0
package org.rut.util.algorithm.support; Ic#xz;elM
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import org.rut.util.algorithm.SortUtil; u]J@65~'b
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/** #.bW9j/
* @author treeroot $"^K~5Q
* @since 2006-2-2 qos7u91z
* @version 1.0 u*l|MIi6J
*/ p~qe/
public class BubbleSort implements SortUtil.Sort{ Z'JS@dV
B[t^u\Fk
/* (non-Javadoc) TC\+>LXiZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9t"Rw ns
*/ ?['!0PF
public void sort(int[] data) { }vd*eexA
int temp; %a;#]d
for(int i=0;i for(int j=data.length-1;j>i;j--){ RdTM5ANT
if(data[j] SortUtil.swap(data,j,j-1); =Ph8&l7~sp
} ut{T:kT
} j9+$hu#a
} _!\d?]Ya
} +2~kHrv
V#t_gS
} X
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Kx__&a
选择排序: j i"g)d6
7RAB"T;?Q
package org.rut.util.algorithm.support; IS bs l=F
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import org.rut.util.algorithm.SortUtil; f!Q\M1t)
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/** ggr
* @author treeroot \hB BG8=&
* @since 2006-2-2 <uH8Fivb
* @version 1.0 @;Ttdwg#J
*/ 6o3
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public class SelectionSort implements SortUtil.Sort { AlSO
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/* '|C3t!H`
* (non-Javadoc) &NE e-cb[
* X%1TsCKMj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )D)5
`n)
*/ ^QB[;g.O
public void sort(int[] data) { D6sw"V#
int temp; p*Bty@CRi
for (int i = 0; i < data.length; i++) { hRcb}>pr
int lowIndex = i; 7|P
kc(O
for (int j = data.length - 1; j > i; j--) { U@lc1#
if (data[j] < data[lowIndex]) { tT$OnZu&
lowIndex = j; l\HdB"nT
} UkV?,P@l
} (C2 XFg_
SortUtil.swap(data,i,lowIndex); Nk`UQ~g$
} %\As
} \{,TpK.
W.7rHa
} m7 =$*1k
'=\}dav!
Shell排序: !d*[QD8
S2~cAhR|M
package org.rut.util.algorithm.support; Zo9<96I&
;SR ESW
import org.rut.util.algorithm.SortUtil; ])x1MmRg\
j]a$RC#
/** R$a<=
* @author treeroot \INH[X#>
* @since 2006-2-2 !QUY (
* @version 1.0 j=_rUc'Me
*/ K~x,so
public class ShellSort implements SortUtil.Sort{ T5BZD
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/* (non-Javadoc) wucdXj{%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VSj!Gm0LB
*/ ~xH&"1
public void sort(int[] data) { !XA3G`}p6s
for(int i=data.length/2;i>2;i/=2){ fn#8=TIDf
for(int j=0;j insertSort(data,j,i); .p`4>XA
} g8),$:Uw
} WA{igj@\
insertSort(data,0,1); B*7kX&Uq
} I-7LT?r
.b:!qUE^
/** \>L,X_DL
* @param data 5/48w-fnZ
* @param j q>q:ZV
* @param i d1/emwH
*/ D)_
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private void insertSort(int[] data, int start, int inc) { Rd?}<L
int temp; #c!:&9oU
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Nz{dnV{&x;
} rCyb3,W
} aD/Rr3v>
} E$d3+``
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} HDyf]2N*N
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快速排序: `S&a.k
'X~tt#T
package org.rut.util.algorithm.support; mgxIxusR
T?9D?u?]
import org.rut.util.algorithm.SortUtil; gjF5~
`
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/** ^S#;
* @author treeroot yTaMlT|
* @since 2006-2-2 -H1=N
* @version 1.0 @WJ;T= L
*/ oL4W>b )
public class QuickSort implements SortUtil.Sort{ We+rFk1ddt
fJ,N.O+9E
/* (non-Javadoc) 8$Q`wRt(%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l=^A41L_
*/ vccWe7rh
public void sort(int[] data) { LyUn!zV$(
quickSort(data,0,data.length-1); BEZ~<E&0H
} \?bV\/GBR
private void quickSort(int[] data,int i,int j){
D+8d^-:
int pivotIndex=(i+j)/2; w$gvgz
file://swap R^Rc!G}
SortUtil.swap(data,pivotIndex,j); `i{d"H0E
B`tq*T%
int k=partition(data,i-1,j,data[j]); y48]|%73
SortUtil.swap(data,k,j); a|ft l&uk
if((k-i)>1) quickSort(data,i,k-1); KaIKb=4L|
if((j-k)>1) quickSort(data,k+1,j); V>$( N/1
"SF0b jG9C
} Y~ ~Dg?e
/** 9#LMK 1ge
* @param data ,OZ
* @param i h\RX/C!+
* @param j D6SUzI1+H
* @return $QX$r N
*/ @xG&K{j
private int partition(int[] data, int l, int r,int pivot) { Z\$HgG
do{ uL'f8Pqg
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N_t,n^i9>*
SortUtil.swap(data,l,r); (1/Sf&2i
} OhF55,[
while(l SortUtil.swap(data,l,r); DF%d/a{]
return l; 3)OZf{D[
} #86N
!&x
uf(ayDE
} VA/2$5Wu
7KT*p&xm
改进后的快速排序: On C)f
Pz]WT1J0
package org.rut.util.algorithm.support; yUoR6w
~f QrH%@
import org.rut.util.algorithm.SortUtil; r}U6LE?>
C* `WMP*
/** l,ny=Q$[1'
* @author treeroot tzI|vVT,
* @since 2006-2-2 AbU`wr/h 4
* @version 1.0 $0* sjXV
*/ F?L]Dff
public class ImprovedQuickSort implements SortUtil.Sort { jKS j );
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private static int MAX_STACK_SIZE=4096; Bz+oMN#XJ
private static int THRESHOLD=10; +sNS
/* (non-Javadoc) +/OSg.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) whI{?NP
*/ .j6udiv5
public void sort(int[] data) { 2j\_svw'
int[] stack=new int[MAX_STACK_SIZE]; [V}vd@*k
:4AQhn^;"
int top=-1; i Ad&o`C
int pivot; ZvY"yl?e
int pivotIndex,l,r; U#<d",I
.[={Yx0!I
stack[++top]=0; FT).$h~+4
stack[++top]=data.length-1; iIfiv<(ChM
IPot][ N>
while(top>0){ +Z#=z,.^
int j=stack[top--]; K5>3
int i=stack[top--]; eAHY/Y!
5!0iK9O
pivotIndex=(i+j)/2; /08FV|tX)
pivot=data[pivotIndex]; 2:LUB)&i
>}k*!J|
SortUtil.swap(data,pivotIndex,j); !&)X5oJ
" <bjS
file://partition ]+lT*6P*
l=i-1; (6%T~|a
r=j; 3j#VKj+Uc
do{ H4i}gdR
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); N$=YL
@m8
SortUtil.swap(data,l,r); ,@Csa#
} ;W0J
while(l SortUtil.swap(data,l,r); 0 '&C5v'
SortUtil.swap(data,l,j); g%2G=gR$?z
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if((l-i)>THRESHOLD){ m:_#kfC&K"
stack[++top]=i; v[CR$@Y
stack[++top]=l-1; qxRsq&_
} lL}6IZ5sb
if((j-l)>THRESHOLD){ >=k7#av
stack[++top]=l+1; a%q,P @8
stack[++top]=j; %p7
?\>
} + V=<vT
d`\SX(C
} U$:^^Zt`B
file://new InsertSort().sort(data); [*%lm9 x
insertSort(data); l|g*E.:4
} '!>9j,BJ
/** <I,4Kc!
* @param data <3Ftq=
*/ nC:T0OJv
private void insertSort(int[] data) { ^Ks1[xc* `
int temp; W3i<Unq
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Rsx6vF8]5
}
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} UG vIH m
} R ENCk(
[gzaOP`f
} bbL\ xq^
s'O%@/;J
归并排序: ft"-
@Y~gdK
package org.rut.util.algorithm.support; Y XhZWo{B
'O%*:'5k
import org.rut.util.algorithm.SortUtil; o*T?f)_[p
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/** St;9&A
* @author treeroot M]8>5Zx.
* @since 2006-2-2 AB=%yM7V*
* @version 1.0 }#zL)+XI
*/ WO>A55Xya
public class MergeSort implements SortUtil.Sort{ RqROl!6
<h(AJX7wsD
/* (non-Javadoc) fWP]{z`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cfmwz~S6i
*/ f:j:L79}
public void sort(int[] data) { <n_?$ TJ
int[] temp=new int[data.length]; Uahh|>s
mergeSort(data,temp,0,data.length-1); Q-) ( s
} NbWEP\dS'z
,|f=2t+5X
private void mergeSort(int[] data,int[] temp,int l,int r){ 9^^\Z5
int mid=(l+r)/2; x]VycS
if(l==r) return ; B"v*[p?
mergeSort(data,temp,l,mid); mbAzn
mergeSort(data,temp,mid+1,r); ~#gc{C@
for(int i=l;i<=r;i++){ $#^3>u
temp=data; e{6wFN
} _d!sSyk`
int i1=l; 5?3 v;B6
int i2=mid+1; E2Sj IR}
for(int cur=l;cur<=r;cur++){ [w](x
if(i1==mid+1) 2<7pe@c98
data[cur]=temp[i2++]; W{Qb*{9
else if(i2>r) {UH45#Ua
data[cur]=temp[i1++]; THl:>s
else if(temp[i1] data[cur]=temp[i1++]; fD%/]`y
else J5b3r1~D"[
data[cur]=temp[i2++]; TT/=0^"
} =u0=)\0@r
} ZW M:Wj192
5ncW
s)
} 1uo |a
b$w66q8
改进后的归并排序: iBWzxPv:z
LBio$67F
package org.rut.util.algorithm.support; nANl9;G
4=MVn
import org.rut.util.algorithm.SortUtil; '4{@F~fu
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/** f*@
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* @author treeroot qX&+
* @since 2006-2-2 .0nT*LF
* @version 1.0 `LH 9@Z{
*/ t:dvgRJt*
public class ImprovedMergeSort implements SortUtil.Sort { BTsvL>Wy
xb7!!PR
private static final int THRESHOLD = 10; 8V(~u^!%_
M5[#YG'FlQ
/* "eoPG#]&
* (non-Javadoc) 0MT?}D&TL
* ,%Pn.E* r;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *7*_QW%?A
*/ s"7FmJ\7rw
public void sort(int[] data) { *K>2B99TXu
int[] temp=new int[data.length]; 2 U%t
mergeSort(data,temp,0,data.length-1); D~qi6@Ga
} nUY)LnI
]V fp,"op
private void mergeSort(int[] data, int[] temp, int l, int r) { C&F%
j. <
int i, j, k; 6n:X
p_yO
int mid = (l + r) / 2; ~m R^j
if (l == r) uP7|#>1%
return; +VIEDV+
if ((mid - l) >= THRESHOLD) [p\xk{7Y
mergeSort(data, temp, l, mid); DvN_}h^nX
else &2@"zD
insertSort(data, l, mid - l + 1); zt((TD2
if ((r - mid) > THRESHOLD) 0?R$>=u
mergeSort(data, temp, mid + 1, r); /3+E-|4s
else HH*,Oe
insertSort(data, mid + 1, r - mid); b`wT*&
W9Us I
for (i = l; i <= mid; i++) { XW'7
temp = data; :A#'8xE/
} 6o#J
for (j = 1; j <= r - mid; j++) { $sL+k 'dY
temp[r - j + 1] = data[j + mid]; 3b?-83a
} >$<Q:o}^
int a = temp[l]; r?`nc6$0|
int b = temp[r]; -Hi_g@i*XW
for (i = l, j = r, k = l; k <= r; k++) { +=`w
if (a < b) { {3Gj
rE
data[k] = temp[i++]; GNG.N)q#C
a = temp; : Q,O:
} else { Z(E.F,k
data[k] = temp[j--]; yl<=_Q
b = temp[j]; 9<Zm}PE32
} z:n
JN%Qb
} R]kH$0`
} q9(O=7O]-
E?0RR'
/** Nf~B 1vkp
* @param data ?#5)TAW
* @param l ~9fTs4U
* @param i Z,3CMWHg
*/ G*v,-O
private void insertSort(int[] data, int start, int len) { hHt.No
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;r;>4+zn\
} I
tn?''~;
} ]~WIGl"g
} LQ$dT#z2A
} aBF<it>
OOsd*nX/
堆排序: 3e[k 9`
z ISy\uka
package org.rut.util.algorithm.support; /Wjf"dG}
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Lrd(b;
import org.rut.util.algorithm.SortUtil; wS2N,X/Y
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55k
/** V6<Ki
* @author treeroot F fzY3r+
* @since 2006-2-2 wRWKem=
* @version 1.0 |?fc]dl1]
*/ ~fA H6FdZ\
public class HeapSort implements SortUtil.Sort{ zHj_q%A
@iz6)2z
/* (non-Javadoc) =2wy;@f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x(zW<J5X"
*/ 3'Z+PPd!
public void sort(int[] data) { 3~0Xe
MaxHeap h=new MaxHeap(); Bsz;GnD|r
h.init(data); a'@?c_y;$
for(int i=0;i h.remove(); MU_
>+Wnf
System.arraycopy(h.queue,1,data,0,data.length); b~G|Bhxa
}
BgG+
HQ|{!P\/?U
private static class MaxHeap{ LZ9IE>sj
!91<K{#A{
void init(int[] data){ ]_)=xF19
this.queue=new int[data.length+1]; HPWjNwM
for(int i=0;i queue[++size]=data; PJcz] <
fixUp(size); l\-(li
H
} YwM;G
g3
} E?f*Z{~,
M7lMOG(\
private int size=0; j[1^#kE
u`X}AKC
private int[] queue; U#_rcu
t#J
#DyY5
public int get() { Yc'7F7.<6
return queue[1]; @*LESN>T@t
} b+}*@xhl
?9H.JR2s%
public void remove() { ~Urj:l
SortUtil.swap(queue,1,size--); yYTiAvN
fixDown(1); ">RDa<H]
} <$;fOp
file://fixdown 8>jd2'v{
private void fixDown(int k) { ? Kn~fs8
int j; k}Vu!+c z
while ((j = k << 1) <= size) { hMs}r,*
if (j < size %26amp;%26amp; queue[j] j++; l:kF0tj"
if (queue[k]>queue[j]) file://不用交换 pRdO4?l
break; &"svt2
SortUtil.swap(queue,j,k); h:+>=~\
k = j; ZjJEjw
} T+/Gz'
} 2\!.w^7'^T
private void fixUp(int k) { xH8nn3U
while (k > 1) { PFIL)D
|G
int j = k >> 1; T%F8=kb-9
if (queue[j]>queue[k]) 5G=CvGu
break; QSy #k~
SortUtil.swap(queue,j,k); ffyKAZ{]po
k = j; Xl%&hM
} VuW&CnZ
} ',*
6vbII
hpym!G
} MhB kr{8
p.1|bXY`
} M+^+u 1QQ0
7QRtNYo#\
SortUtil: {ByT,92
VL<)d-
package org.rut.util.algorithm; |v{a5|<E
r,b-c
import org.rut.util.algorithm.support.BubbleSort; (#.)~poZ
import org.rut.util.algorithm.support.HeapSort; /$x6//0If
import org.rut.util.algorithm.support.ImprovedMergeSort; T[eTT]Z{Ia
import org.rut.util.algorithm.support.ImprovedQuickSort; z|yC [Ota
import org.rut.util.algorithm.support.InsertSort; AuU:613]W8
import org.rut.util.algorithm.support.MergeSort; Tr}c]IP*
import org.rut.util.algorithm.support.QuickSort; an<tupi[E
import org.rut.util.algorithm.support.SelectionSort; ;xa]ke3]
import org.rut.util.algorithm.support.ShellSort; _B|g)Rdv
#,qikKjt2
/** HWGlC <
* @author treeroot ?z60b=f8
* @since 2006-2-2 ^IM;D)X&:
* @version 1.0 I#f<YbzD
*/ \Jv6Igu
public class SortUtil { PHD$E s
public final static int INSERT = 1; s 4}}MV3X
public final static int BUBBLE = 2; I)O-i_}L&K
public final static int SELECTION = 3; c Ew/F0
public final static int SHELL = 4; Ph.$]yQCc]
public final static int QUICK = 5; /^0Hi4+\
public final static int IMPROVED_QUICK = 6; J]|-.Wv1
public final static int MERGE = 7; 5R,/X
public final static int IMPROVED_MERGE = 8; 37!}8
public final static int HEAP = 9; n|L.dBAs]
Md_\9G .e
public static void sort(int[] data) { ^QV;[ha,o
sort(data, IMPROVED_QUICK); A0WQZt!FEN
} &ze'V
, :
private static String[] name={ d|6*1hby
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $-
#M~eZv
}; "$:nz}
^ tm,gh
private static Sort[] impl=new Sort[]{ e v?Hz8Q;(
new InsertSort(), ({zp$P}
new BubbleSort(), ;nv4lxm
new SelectionSort(), z/rN+ ,
new ShellSort(), #!y|cP~;I
new QuickSort(), P67r+P,
new ImprovedQuickSort(), sbNCviKP
new MergeSort(), T0RgCU
IV
new ImprovedMergeSort(), +|(
eP_
new HeapSort() x_(B7ob
}; NCSb`SC:
9}2I'7]
public static String toString(int algorithm){ .6OE8w
1
return name[algorithm-1]; o~^hsm[44J
} D@4hQC\
A"z')
public static void sort(int[] data, int algorithm) { 1/w['d4l!
impl[algorithm-1].sort(data); ]b<k%
} 7,jh44(\=
94|BSxc
public static interface Sort { n&[U/`o
public void sort(int[] data); -_pI:K[
} m2<sVTN`^
)X| uOg&|
public static void swap(int[] data, int i, int j) { jB?Tua$,s
int temp = data; 2J|Yc^b6
data = data[j]; uu=e~K
data[j] = temp; GXRK+RHuBi
} =`vUWONn
} O2Rv^la