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。 9K&b1O@Aj
插入排序: O[m+5+
+Y\#'KrA
package org.rut.util.algorithm.support; l>:?U
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import org.rut.util.algorithm.SortUtil; +Gjy%JFp
/** &2g1Oy~
* @author treeroot D]0#A|nF
* @since 2006-2-2 5-sxTp
* @version 1.0 \;sUJr"$
*/ S5XFYQ
public class InsertSort implements SortUtil.Sort{ .z9JoQ
#A|MNJ%m
/* (non-Javadoc) |5W u0T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5zUD W?
*/ 4u;W1=+Vn
public void sort(int[] data) { w ggl,+7
int temp; 'Kq%tM26!
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _LS=O@s^
} 4}0s^>R
} rj6wKfz
} 0)nU[CY
)cvC9gt
} 3}sd%vCK
APF-*/K?
冒泡排序: m!PN1$9V
@Pa ;h
package org.rut.util.algorithm.support; FPu,sz8
!W6]+
import org.rut.util.algorithm.SortUtil; [#.QDe
tIRw"sz
/** i#eb %9Mn
* @author treeroot a~{mRh
* @since 2006-2-2 N".
af)5
* @version 1.0 HWc=.Qq
*/ 8'f:7KF
public class BubbleSort implements SortUtil.Sort{ t[X'OK0W%3
+DU}f;O8v
/* (non-Javadoc) 8J@REP4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jbG #__#_
*/ ~< k'{
public void sort(int[] data) { 8J>s|MZ
int temp; .<tb*6rX>
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3n,F5?!m
if(data[j] SortUtil.swap(data,j,j-1); )Z]8SED
} h-6kf:XP%
} ;Neld #%J
} H_jMl$f)j
} 9iGJYMWf
H*!E*_
} 3vMfms
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选择排序: JWEqy+,Fjw
9_&.G4%V
package org.rut.util.algorithm.support; $cYh X^YG.
:V >Z|?[*H
import org.rut.util.algorithm.SortUtil; Q.!D2RZc
6 s*#y[$
/** =i `o+H
* @author treeroot uu'~[SZlL
* @since 2006-2-2 n}YRE`>D
* @version 1.0 [5,#p$R
*/ 7q(RQQp
public class SelectionSort implements SortUtil.Sort { k/*r2 C
g<tr |n
/* Y>IEB,w
* (non-Javadoc) L-q.Q
* -[G+*3Y{7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bl(we/r
*/ t.3b\RV[
public void sort(int[] data) { uN'e~X6
int temp; Ut0oh
for (int i = 0; i < data.length; i++) { $My%7S/3
int lowIndex = i; X62GEqff
for (int j = data.length - 1; j > i; j--) { g
}5lGz4
if (data[j] < data[lowIndex]) { mhVSZhx|
lowIndex = j; rBT#Cyl
} }+,;wj~
} 0>>tdd7
SortUtil.swap(data,i,lowIndex); ](B+ilr
} t}]=5)9<
} '(~+
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} "*<9)vQ6|
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Shell排序: $(G.P!/
ss.wX~I
package org.rut.util.algorithm.support; XB^o>/|@S
IL&Mf9m
import org.rut.util.algorithm.SortUtil; *ewE{$UpK
4OC^IS
/** jsjH.O
* @author treeroot *i&ks>4N
* @since 2006-2-2 bF<FX_}!s!
* @version 1.0 8|HuxE
*/ r. :LZEr
public class ShellSort implements SortUtil.Sort{ +%oXPG?
AYfW}V"
/* (non-Javadoc) 7<=xc'*8t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j$,:cN
*/ Qv|A^%Ub!
public void sort(int[] data) { 7$Jb"s
for(int i=data.length/2;i>2;i/=2){ R8sj>.I9j
for(int j=0;j insertSort(data,j,i); 0M>+.}e+
} 4uwI=U UB
} UXvUU^k"v
insertSort(data,0,1); t*iKkV^aE
} B!4chxzUZ
9aHV~5
/** gQ6_]~4
* @param data V+(1U|@~
* @param j !0i
* @param i "@#^/m)
*/ Rq|7$O5
private void insertSort(int[] data, int start, int inc) { >;LXy
int temp; !#Ub*qY1Z
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i]Njn k
} @l41'?m
} Ixk L]
} tZB"(\
p
D-k<8|
} (_ HwU/
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快速排序: 8KiG(6*Q
LhKaqR{
package org.rut.util.algorithm.support; 5bKM}?=L
$SQUN*/>
import org.rut.util.algorithm.SortUtil; [3"k :
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/** JZ3CC f
* @author treeroot rO[ cm}
* @since 2006-2-2 9J+p.N
* @version 1.0 ~4fUaMT
*/ ;SnpD)x@)
public class QuickSort implements SortUtil.Sort{ 4YX/=
/H3z~PBa
/* (non-Javadoc) U[,."w]T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6V-u<FJ
*/ *t=8^q(K[
public void sort(int[] data) { mE\sD<b
quickSort(data,0,data.length-1); ~.7/o0'+
} )31{.c/
private void quickSort(int[] data,int i,int j){ /N '0@q
int pivotIndex=(i+j)/2; K2|2Ks_CS
file://swap |Tv}leJF
SortUtil.swap(data,pivotIndex,j); lY
-2e>
3dheT}XV?p
int k=partition(data,i-1,j,data[j]); A#k(0e!O
SortUtil.swap(data,k,j);
!?)ky `S3
if((k-i)>1) quickSort(data,i,k-1); Di)%vU
if((j-k)>1) quickSort(data,k+1,j); 3b{ 7Z 2
wz`\RHL
} JbX"K< nQ
/** Mu: y9o95
* @param data }:+SA
* @param i 1K{u>T
* @param j IyK^` y
* @return Is&0h|
*/ 8z1#Q#5
private int partition(int[] data, int l, int r,int pivot) { WVZ](D8Gc]
do{ H?oBax:
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z mVw5G
q
SortUtil.swap(data,l,r); )SU\s+"M
} hQ7-m.UZw
while(l SortUtil.swap(data,l,r); fVJlA
return l; 4|U$ON?x
} O"^3,-
R.x^
} vG'6?%38
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改进后的快速排序: _nwsIjsW
u1 Z;n
package org.rut.util.algorithm.support; kx{LY`pY
9[2qgw\D
import org.rut.util.algorithm.SortUtil; QQI,$HId
;*u"hIl1/
/** $|"Y|3&X
* @author treeroot ZNDn! Sj
* @since 2006-2-2 Ms=5*_J2Jk
* @version 1.0 _ck)yY?7
*/ 11VtC)
public class ImprovedQuickSort implements SortUtil.Sort { b!p]\B!
NMs8^O|0
private static int MAX_STACK_SIZE=4096; r{cmw`WA/P
private static int THRESHOLD=10; Nwwn #+
/* (non-Javadoc) )fy-]Ky
*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7F5v-/
*/ f`<elWgc"
public void sort(int[] data) { 2x5^kN7
int[] stack=new int[MAX_STACK_SIZE]; ,Iv eKk5W
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int top=-1; !\<
[}2}
int pivot; ^/~ZP?%]
int pivotIndex,l,r; dvAG}<
#Mw 6>5}<
stack[++top]=0; 22OfbwCb
stack[++top]=data.length-1; #7Fdmnu`
^%n]_[RUn4
while(top>0){ vmzc0J+3p
int j=stack[top--]; 4%B0H>
int i=stack[top--]; #Z. QMWq
&=^YN"=Z
pivotIndex=(i+j)/2; pKtN$Fd
pivot=data[pivotIndex]; _jb'HP
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SortUtil.swap(data,pivotIndex,j); aP$it6Z
nnOgmI7
file://partition HKL/D
l=i-1; efr 9
r=j; Rtu"#XcBw+
do{ /S{U|GBB%r
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K'Y/0:"*
SortUtil.swap(data,l,r); Uiv4'vYg
} 5,\-;
while(l SortUtil.swap(data,l,r); ))%f"=:wt
SortUtil.swap(data,l,j); U)[LKO1
C:AD ZJL
if((l-i)>THRESHOLD){ A`~R\j
stack[++top]=i; i/.#`
stack[++top]=l-1; $d-$dM?R5
} 4^Ss\$*
if((j-l)>THRESHOLD){ w/z o
stack[++top]=l+1; b/{$#[oP`
stack[++top]=j; 8NkyT_\
} 3,'LW}
qRSoF04!R
} 0u;a*#V @
file://new InsertSort().sort(data); ds9U9t
insertSort(data); h#p[6}D
} /3#h]5Y"T
/** 0GlQWRa
* @param data %4wEAi$I
*/ aUF{57,<
private void insertSort(int[] data) { eQz.N<f"
int temp; 2`^6``
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gR+P!Eow
} Mkh/+f4
} 4_D
*xW
} )&DsRA7v
3$?nzKTW\
} 0bpGPG's&
j0=F__H#@
归并排序: 9u)p9)^-.v
o~<jayqU
package org.rut.util.algorithm.support; D<hX%VJ%M
TMGYNb%<bX
import org.rut.util.algorithm.SortUtil; <.#jp([W>
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/** H:EK&$sU
* @author treeroot 1M.#7;#B3
* @since 2006-2-2 PR/>E60H
* @version 1.0 '>ASr]Q
*/ (*M0'5
public class MergeSort implements SortUtil.Sort{ kbL7Xjk
deQ {
/* (non-Javadoc) b#
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pIV|hb!G
*/ <FX]n<
public void sort(int[] data) { rK3KxG
int[] temp=new int[data.length]; .sc80i4
mergeSort(data,temp,0,data.length-1); k')H5h+Q=
} [,MaAB
L8q#_k
private void mergeSort(int[] data,int[] temp,int l,int r){ ` ZZ3!$czR
int mid=(l+r)/2; ,SPgop'
if(l==r) return ; $EHFf$M
mergeSort(data,temp,l,mid); ub!lHl
mergeSort(data,temp,mid+1,r); "n{';Q)
for(int i=l;i<=r;i++){ -Bq]E,Xf)
temp=data; x ;~;Ah.p
} 3dz{"hV
int i1=l; =jKu=!QPq
int i2=mid+1; n*ROlCxV
for(int cur=l;cur<=r;cur++){ _u""v
if(i1==mid+1) ,na}' A@a`
data[cur]=temp[i2++]; C=CZtjUt
else if(i2>r) #D#kw*c
data[cur]=temp[i1++]; C?k\5AzT
else if(temp[i1] data[cur]=temp[i1++]; 5VpqDL~d
else =`*@OJHH
data[cur]=temp[i2++]; {Mj- $G"
} KwV!smi2
} Z
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Lr
B uso
`G
} =E$bZe8
j\wZjc-j
改进后的归并排序: p0y|pD
IhBQ1,&J
package org.rut.util.algorithm.support; s Pb}A$'
bHcBjk.\
import org.rut.util.algorithm.SortUtil; 1;KJUf[N
$0x+b!_l@
/** :Jf</uP_
* @author treeroot dGj0;3FI%
* @since 2006-2-2 tK@7t0
* @version 1.0 }D+ b`,
*/ s?s,wdp
public class ImprovedMergeSort implements SortUtil.Sort { w >%^pO~}`
BW6Ox=sr<
private static final int THRESHOLD = 10; 4s~X
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/* q6*i/"mN*
* (non-Javadoc) $UdBZT-
* Tt9cX}&&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k q]E@tE*3
*/ j^;P=L0=
public void sort(int[] data) { GqNOWK2O
int[] temp=new int[data.length]; "+4Jmf9
mergeSort(data,temp,0,data.length-1); 00'SceL=`
} ~(^pGL3<
b%*`}B
private void mergeSort(int[] data, int[] temp, int l, int r) { wx`.
int i, j, k; '<vb_8.
int mid = (l + r) / 2; [E%g3>/mt
if (l == r) .I EHjy\+
return; ji>LBbnHdE
if ((mid - l) >= THRESHOLD) rW|%eT*/'A
mergeSort(data, temp, l, mid); {chZ&8)f
else 9BpxbU+L;
insertSort(data, l, mid - l + 1); /F9Dg<#a
if ((r - mid) > THRESHOLD) j!NXNuy:
mergeSort(data, temp, mid + 1, r); @;KYvDY
else <wb6)U.
insertSort(data, mid + 1, r - mid); \2=I//YF
m&b1H9ymd
for (i = l; i <= mid; i++) { h_ccE6]t
temp = data; A`JE(cIz3
} 2LR y/ah
for (j = 1; j <= r - mid; j++) { M9o/6
temp[r - j + 1] = data[j + mid]; oK-d58 sM
} u{va2n/
int a = temp[l]; }apno|W&
int b = temp[r]; k H<C9z2=
for (i = l, j = r, k = l; k <= r; k++) { 9_d#F'#F
if (a < b) { U,p'<rmS
data[k] = temp[i++]; [0105l5
a = temp; ~4Gc~ "
} else { jUKMDlH
data[k] = temp[j--]; PYWFz
b = temp[j]; 2HSFMgy
} i$p2am8f
} k!z<=WA
} ]Jm\k'u[
S[q:b
.
/** 9d^m 7}2
* @param data J=78p#XUg
* @param l )+'=Zvgej=
* @param i [<{r~YFjWW
*/ rm ;U'&{
private void insertSort(int[] data, int start, int len) { N%>h>HJ
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =n,1*
} !W8=\:D[
} szhSI
} ||*F.p
} 2L;=wP2?{
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堆排序: L fcy#3!
IDJ2epW*;
package org.rut.util.algorithm.support; ^X+qut+~
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ztu9
import org.rut.util.algorithm.SortUtil; *P9" 1K+
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/** |a"]@W$>
* @author treeroot mjg@c|rTG
* @since 2006-2-2 yQ[ ;.<%v
* @version 1.0 9XtO#!+48
*/ G/FDD{y
public class HeapSort implements SortUtil.Sort{ uq-`1m}
CJCxL\
/* (non-Javadoc) `JDZR:bMaT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZiQ<SSo:
*/ ?!jJxhK<h
public void sort(int[] data) { YkMFU'?[
MaxHeap h=new MaxHeap(); 0Fon`3(^\
h.init(data); :L+xEL
for(int i=0;i h.remove(); Rc{R^5B
System.arraycopy(h.queue,1,data,0,data.length); a%U#PF6
} 6,jCO@!
(B$>o.(JA
private static class MaxHeap{ Y$"m*0
?B;7J7 T
void init(int[] data){ 1U.X[}e
this.queue=new int[data.length+1]; ;92xSe"Ww
for(int i=0;i queue[++size]=data; fap]`P~#L
fixUp(size); M^8zqAA
} F)X`CG ;t
}
Hcg7u7M{
S'qT+pP
private int size=0; G1e_pszD{o
/ [49iIzC
private int[] queue; 'dh{q`#0
Ns1n|^9
public int get() { et~D9='E
return queue[1]; ~!2fUewEu
} ;SjNZi)4d
T]z(>{
public void remove() { /;Hqv`X7
SortUtil.swap(queue,1,size--); aXq ig&:
fixDown(1); BF2U$-k4
} l4+ `x[^
file://fixdown e21J9e6z
private void fixDown(int k) { '"\n,3h
int j; tbR
while ((j = k << 1) <= size) { ^78N25RU(
if (j < size %26amp;%26amp; queue[j] j++; ;Wy03}K4J
if (queue[k]>queue[j]) file://不用交换 -N^Ah_9ek
break; t7u*j-YE
SortUtil.swap(queue,j,k); J;>~PXB
k = j; ,D }Ka?
} {_*G"A 9
} "&f|<g5
private void fixUp(int k) { \xggIW.^0
while (k > 1) { |;~2y>E
int j = k >> 1; LXxQI(RO
if (queue[j]>queue[k]) p&Qm[!
break; '{.4~:
SortUtil.swap(queue,j,k); 4.wrY6+V
k = j; %5zIh[!1$
} @w.DN)GPo
} L>1y[
Q
wGT>Xh!
} /1{:uh$
)h 6 w@TF
} ?.F^Oi6
u
uQn1kI[y
SortUtil: n!~ $Z/
8]vut{
package org.rut.util.algorithm; !LpjTMYs
FGP^rTP)e
import org.rut.util.algorithm.support.BubbleSort; /ivVqOo
import org.rut.util.algorithm.support.HeapSort; Yl'8"
\HF
import org.rut.util.algorithm.support.ImprovedMergeSort; Dzu//_u
import org.rut.util.algorithm.support.ImprovedQuickSort; nj;3U^
import org.rut.util.algorithm.support.InsertSort; 'a JE+
import org.rut.util.algorithm.support.MergeSort; c;"e&tW
import org.rut.util.algorithm.support.QuickSort; KFO
K%vbM
import org.rut.util.algorithm.support.SelectionSort; <Fx%P:d
import org.rut.util.algorithm.support.ShellSort; $MQ<QP
/{[<J<(8
/** {.e+?V2>_
* @author treeroot '/\*l<
* @since 2006-2-2 '&,p>aM
* @version 1.0 s#a`e]#?
*/ /Ta-3Eh!
public class SortUtil {
~XWBLU<
public final static int INSERT = 1; )SZ#%OE*
public final static int BUBBLE = 2; 2SlL`hN>Z
public final static int SELECTION = 3; G}l9 [lE
public final static int SHELL = 4; l(_|CkcZ
public final static int QUICK = 5; F7b%
x7b
public final static int IMPROVED_QUICK = 6; =X5w=(&
public final static int MERGE = 7; >m;nt}f'+
public final static int IMPROVED_MERGE = 8; PknKzrEG:>
public final static int HEAP = 9; 0L32sFy
Uvc$&j^k
public static void sort(int[] data) { t}Td$K7
sort(data, IMPROVED_QUICK); z?Z"*z
} d(^HO~p
private static String[] name={ 6A.%)whI;
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %vZHHBylu
}; \*{Mg wF
Ths~8{dMb
private static Sort[] impl=new Sort[]{ .s4v*bng
new InsertSort(), F Xr\
new BubbleSort(), gXs9qY%=
new SelectionSort(), _U4@W+lhX_
new ShellSort(), (gVN<Es
new QuickSort(), O"o|8
l}M/
new ImprovedQuickSort(), j-**\.4a~
new MergeSort(), oidK_mU9q
new ImprovedMergeSort(), n!8W@qhew
new HeapSort() i4k [#x
}; Btzes.
8pr toCB
public static String toString(int algorithm){ 0`WFuFi^o
return name[algorithm-1]; $n!5JS@40
} U" 3L
JtMl/h
public static void sort(int[] data, int algorithm) { Hq<4G:#
impl[algorithm-1].sort(data); mP6}$D
} 5+oY c-
8:S+*J[gSn
public static interface Sort { {t!
&x:
public void sort(int[] data); c*zeO@AAn
} 4t%Lo2v!X%
I;wxgWOP
public static void swap(int[] data, int i, int j) { k}nGgd6XD
int temp = data; x_<#28H!
data = data[j]; `~VL&o1>
data[j] = temp; pYAKA1F
} $?z}yx$
} +'93%/: