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。 Ul3xeu
插入排序: / %iS\R%ca
(Ffa{Tt!
package org.rut.util.algorithm.support; w c\`2(
mHa~c(x
import org.rut.util.algorithm.SortUtil; -$49l
/** +|x%a2?x:
* @author treeroot L(9AcP
* @since 2006-2-2 [.w `r>kZI
* @version 1.0 5Zmc3&vRl
*/ TI\EkKu"
public class InsertSort implements SortUtil.Sort{ \rE] V,,2
U#<{RqY
/* (non-Javadoc) F`,Hf Cb\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nq|y\3]
*/ SR_-wD
public void sort(int[] data) { Tt=;of{
int temp; m"6K_4r]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p#3G=FV
}
m3^D~4
} mx#)iHY
} sCp)o,;
DghqSL^s
} =NSunW!
d(Hqj#`-31
冒泡排序: AYfe_Dj
s,l*=<
package org.rut.util.algorithm.support; BuUM~k&SY
T0.sL9
import org.rut.util.algorithm.SortUtil; e E(+
0QxBC7`qp
/** t:xTmK&vt
* @author treeroot 8 qZbsZi4
* @since 2006-2-2 O@w_"TJP/z
* @version 1.0 PWquu`
*/ u9u'5xAO
public class BubbleSort implements SortUtil.Sort{ ] mK{E~Zll
(f~}5O<
/* (non-Javadoc) hZ.](rD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
kKY,&Fn-
*/ LabI5+g
public void sort(int[] data) { F8M};&=*1r
int temp; EMdU4YnE"
for(int i=0;i for(int j=data.length-1;j>i;j--){ qT&zg@m
if(data[j] SortUtil.swap(data,j,j-1); oel?w e6
} [fELf(;(
} b!teSf
} .[1@wW&L
} x<@i3Y{[
7]i6 Gk
} 8dJ+Ei~M
T)Q_dF.N
选择排序: "L8Hgwg
mS49l
package org.rut.util.algorithm.support; !DV0u)k(
$BG]is,&5
import org.rut.util.algorithm.SortUtil; f zL5C2d
=
C/F26=|
/** } :gi<#-:G
* @author treeroot [HQ/MkP-Z
* @since 2006-2-2 =kz HZc
* @version 1.0 U-U(_W5&
*/ .Yz^r?3t
public class SelectionSort implements SortUtil.Sort { +ZFN8
_a_T`fE&de
/* ;ZMIYFXRqh
* (non-Javadoc) fZ^ad1o
* ~y
whl'"k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JNP6qM
*/ ^t$uDQ[hA
public void sort(int[] data) { ps:E(\
int temp; n36iY'<) G
for (int i = 0; i < data.length; i++) { "$ISun=8
int lowIndex = i; gA3f@7}d
for (int j = data.length - 1; j > i; j--) { }]<|`FNc
if (data[j] < data[lowIndex]) { fN:FD`
lowIndex = j; S@y?E}
} {A5$8)nl|
} ;lt8~ea
SortUtil.swap(data,i,lowIndex); uD[T l
} 77wod}h!:
} ,DEcCHr,
^g"p}zf
L"
} Vi0D>4{+
P\QbMj1U
Shell排序: %;<g!Vw.k
7) af
package org.rut.util.algorithm.support; JxEz1~WK &
i CB:p
import org.rut.util.algorithm.SortUtil; !1UZ<hq
@RL'pKab9
/** u:B=lZ[
* @author treeroot +rhBC
V
* @since 2006-2-2 K}GRU)
* @version 1.0
AsvH@\\
*/ AVfF<E/
public class ShellSort implements SortUtil.Sort{ F
IB)cpo
$@L2zl1
/* (non-Javadoc) WMWUP ZsGS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :h!'\9
*/ NW*#./WdF8
public void sort(int[] data) { =)*ZrD
for(int i=data.length/2;i>2;i/=2){ Y^;izM}
for(int j=0;j insertSort(data,j,i); nwqA\
} 4]-7S l,
} yJ6g{#X4K<
insertSort(data,0,1); q|r*4={^!*
} e@/' o/
""_B3'
/** [/l&:)5W>
* @param data ] ;CJ6gM~
* @param j a`?Vc}&
* @param i
5PC:4
*/ <:mK&quf
private void insertSort(int[] data, int start, int inc) { <(yAat$H
int temp; Q("4R
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <P@O{Xi+K
} ! CJ*zZ*
} TmM~uc7mj
} %az6\"n
H$pgzNL
} ?IoA;GBg
DF
gM7if
快速排序: 8U4In[4
F" 4;nU
package org.rut.util.algorithm.support; j |o&T41
X\i;j!;d
import org.rut.util.algorithm.SortUtil; S/RChg_L5
1+Ik\
/** VUz+_)
* @author treeroot 0;`+e22
* @since 2006-2-2 Sq:J'%/z
* @version 1.0 :2')`xT
*/ zE?dQD^OD
public class QuickSort implements SortUtil.Sort{ BQ70<m2D$
z<0/#OP'
/* (non-Javadoc)
/<%L&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -})zRL0!'
*/ Z+[W@5q
public void sort(int[] data) { f/4DFs{
quickSort(data,0,data.length-1); rw0s$~'
} .j=mT[N,I
private void quickSort(int[] data,int i,int j){ 'op_GW
int pivotIndex=(i+j)/2; ]<c\+9
file://swap .~q>e*8AH
SortUtil.swap(data,pivotIndex,j); <U\8&Uv>
NA`8 ^PZ
int k=partition(data,i-1,j,data[j]); g-NrxyTBlx
SortUtil.swap(data,k,j); ra_v+HR7
if((k-i)>1) quickSort(data,i,k-1); j'hWhLax
if((j-k)>1) quickSort(data,k+1,j); I:YgKs)[
e#k)F.TZ:%
} *Tr{a_{~C
/** ?8U]UM6Tu4
* @param data OjqT5<U
* @param i EQ|Wke
* @param j Dk8@x8
* @return !-
5z 1b)
*/ 4mpcI
private int partition(int[] data, int l, int r,int pivot) { WW!-,d{{@
do{ DZEq(>mn
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); XV`8Vb
SortUtil.swap(data,l,r); ;d]vAj
} oJ/=&c
while(l SortUtil.swap(data,l,r); sBqOcy
return l; 02T'B&&~
} , q{~lf-
IR;3{o
} *&R|0I{>
x-4d VKE*z
改进后的快速排序: v$5D&Tv
vz1I/IdTd
package org.rut.util.algorithm.support; #TH(:I=[
&!M6{O=~
import org.rut.util.algorithm.SortUtil; H\9ePo\b~
|B64%w>Y
/** 036QV M$
* @author treeroot bqx2lQf,_
* @since 2006-2-2 a$bE2'cb
* @version 1.0 ,]das
*/ +>$Kmy[3
public class ImprovedQuickSort implements SortUtil.Sort { yUO%@;
l
m(mY$B*_
private static int MAX_STACK_SIZE=4096; >$=l;jO`n
private static int THRESHOLD=10; imhE=6{
/* (non-Javadoc) l0g+OMt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [qkc6sqo
*/ (XFF}~>B.
public void sort(int[] data) { +RkXe;q
int[] stack=new int[MAX_STACK_SIZE]; 2k&Voa
Pt-O1$C[
int top=-1; W ,v0~
int pivot; wqJl[~O$
int pivotIndex,l,r; iWW
>]3Q
/WK1( B:
stack[++top]=0; UQ@szE
stack[++top]=data.length-1; &0J8ICd=
u|D L?c>W
while(top>0){ E]r<t#
int j=stack[top--]; o&$lik
int i=stack[top--]; qG g2 9
sr(nd35
pivotIndex=(i+j)/2; n1PvZ~^3
pivot=data[pivotIndex]; yw89*:A6
*m`x/_y+
SortUtil.swap(data,pivotIndex,j); M
8(w+h{
lk
/Ke
file://partition |_ U!i
l=i-1; W%o! m,zFM
r=j; A0v@L6m-O
do{ *Gj`1#Z$
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ag8lI+
h
SortUtil.swap(data,l,r); :/t_5QN
} 8|5+\1!#/)
while(l SortUtil.swap(data,l,r); :2:%
SortUtil.swap(data,l,j); C#3&,G W
v!3Oq.ot
if((l-i)>THRESHOLD){ F|o1r
stack[++top]=i; c%+uji6
stack[++top]=l-1; R9QW%!:,\2
} j8rxhToC
if((j-l)>THRESHOLD){ h%v qt~0
stack[++top]=l+1; X gtn}7N.
stack[++top]=j; L;+e)I]
} CUBL/U\=
+[$Td%6
} j_0l'S aj
file://new InsertSort().sort(data); Xr88I^F;
insertSort(data); :&2%x
} 1Oak8 \G
/** R"\(a
* @param data dX[Xe
*/ wjT#D|soI
private void insertSort(int[] data) { r/HG{XH`
int temp; 'AmA3x)9u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y$6EEp
} U#XW}T=|
} :/RvtmW
} E33x)CP
ng6E&<Z
} T]b&[?p|a[
uigzf^6,
归并排序: n3 Rf:j^R
K
6,c||#<
package org.rut.util.algorithm.support; [TxvZq*4
.SSPJY(
import org.rut.util.algorithm.SortUtil; HL:w*8a
V!e*J,g
/** #$!^1yO
* @author treeroot 54RexB o
* @since 2006-2-2 u^x<xw6f
* @version 1.0 BIg2`95F|
*/ x@pzgqi3
public class MergeSort implements SortUtil.Sort{ #]^M/y
h
s5MG#M 9
/* (non-Javadoc) 'RNj5r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |I|,6*)xg
*/ KxfH6:\RB
public void sort(int[] data) { ft iAty0n
int[] temp=new int[data.length]; Lw?>1rTT/
mergeSort(data,temp,0,data.length-1); V|{~9^
} &._Mh
Z uP3/d
private void mergeSort(int[] data,int[] temp,int l,int r){ <xH!
Yskc
int mid=(l+r)/2; s9fEx-!y
if(l==r) return ; C/ ]Bx
mergeSort(data,temp,l,mid); ;$qc@)Uwp
mergeSort(data,temp,mid+1,r);
;CV'
for(int i=l;i<=r;i++){ Z 8GIZ
temp=data; w[EEA_\
} n-<`Z NMU
int i1=l; %(s2{$3
int i2=mid+1; ma"M? aM
for(int cur=l;cur<=r;cur++){ q>6,g>I
if(i1==mid+1) dKw[#(m5v
data[cur]=temp[i2++]; 9,"gXsvx(
else if(i2>r) &[yYgfsp
data[cur]=temp[i1++]; ]2|KG3t
else if(temp[i1] data[cur]=temp[i1++]; 4]Gm4zO
else -;i:bE
data[cur]=temp[i2++]; F>%,}Y~B:
} 2<V`
} gxC`Ml
.Pux F
} <N=ow"rD
m}6>F0Kv
改进后的归并排序: "ZmxHMf
KQ(S\
package org.rut.util.algorithm.support; '}F9f?
m]{/5L
import org.rut.util.algorithm.SortUtil; @ W q8AFo
UyF;sw
/** \Z~
<jv
* @author treeroot l9H-N*Wx
* @since 2006-2-2 vJ&35nF&
* @version 1.0 hIa,PZ/Q
*/ hWbjA[a/
public class ImprovedMergeSort implements SortUtil.Sort { avXBCvP+h
Oj2=& uz
private static final int THRESHOLD = 10; Q
H>g-@
!yKrA|w1
/* QP@@h4J^
* (non-Javadoc) +5kQ;D{+
* *$mb~k^R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XqcNFSo)
*/ Jr>Nc}!U
public void sort(int[] data) { 'w|N}
4
int[] temp=new int[data.length]; M?['HoRo
mergeSort(data,temp,0,data.length-1); CdtwR0
} ^6!8)7b
;BHIss7
private void mergeSort(int[] data, int[] temp, int l, int r) { \z.p [;'ir
int i, j, k; -W|~YK7e
int mid = (l + r) / 2; [[ }ukG4
if (l == r) bF +d_t
return; .ffr2\'*
if ((mid - l) >= THRESHOLD) T%YN(f
mergeSort(data, temp, l, mid); 4!?4Tc!X
else 160BgFM
insertSort(data, l, mid - l + 1); W,nn,%
if ((r - mid) > THRESHOLD) 1X?q4D"
mergeSort(data, temp, mid + 1, r); \PmM856=ms
else H;FzWcm
insertSort(data, mid + 1, r - mid); P1`YbLER5
QX.U:p5C
for (i = l; i <= mid; i++) { hm1.UE
temp = data; ;*20b@
} ~AF'
6"A
for (j = 1; j <= r - mid; j++) { T7M];@q
temp[r - j + 1] = data[j + mid]; obgO-d9l
} Ti#x62X{
int a = temp[l]; mx2Ov u
int b = temp[r]; 7~H$p X
for (i = l, j = r, k = l; k <= r; k++) { ;$4:
&T
if (a < b) { QCfR2Nn}
data[k] = temp[i++]; i \ .&8
a = temp; ^4{{ +G)j
} else { 5ai$W`6
data[k] = temp[j--]; tZr_{F@
b = temp[j]; ^j?"0|
} ~y ?v
} \@6V{y'Zo
} #Jfmt~ks'
o;pJjC]
/** hCj8y.X|E(
* @param data mWVq>~
* @param l YD5mJ[1t"2
* @param i os+]ct
*/ }jNVR#D:
private void insertSort(int[] data, int start, int len) { :,'.b|Tl.b
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); U
a1Z,~ *
} c{i\F D
} q6P5:@
} 5N|hsfkx
} NRe=O*O
asbFNJG{
堆排序: 6N.MCB^
S&'-wAEd
package org.rut.util.algorithm.support; LO)QEUG
zR}vR9Ls
import org.rut.util.algorithm.SortUtil; o~VZ%B
`Z
(`
/** Ja%isIdh
* @author treeroot X@~R<
* @since 2006-2-2 ~A*$+c(
* @version 1.0 Z&GjG6t
*/ hOm0ND?;1
public class HeapSort implements SortUtil.Sort{ YUlH5rO3
D#X&gE
/* (non-Javadoc) (i]0IYMXy*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G-DOI
*/ k_ijVfI9
public void sort(int[] data) { U
H6
Jvt
MaxHeap h=new MaxHeap(); #|
m*k
h.init(data); JvtbGPz
for(int i=0;i h.remove(); wUzMB]w
System.arraycopy(h.queue,1,data,0,data.length); a &hj|
} pA@BW:#
d-#yN:}0
private static class MaxHeap{ b*cVC^{Dy
0C0ld!>r
void init(int[] data){ 5Ja[p~^L
this.queue=new int[data.length+1]; }<H0CcG
for(int i=0;i queue[++size]=data; H`jvT]
fixUp(size); ^W[3RiG
} Xm^/t#
} r59BBW)M
R|!4klb
private int size=0; ?qczMck_
fZ pUnc
private int[] queue; * l-F
HJOoCf
public int get() { DbH'Qs?z
return queue[1]; <f@
A\
} $Q56~AP
^e1mK4`
public void remove() { &=v5M9GR]
SortUtil.swap(queue,1,size--); 42,K8
fixDown(1); .\|}5J9W
} 5`1p
?
file://fixdown Rc`zt7hbJ
private void fixDown(int k) { + :k"{I
int j; *uvE`4V^Jg
while ((j = k << 1) <= size) { 78FK{Cr
if (j < size %26amp;%26amp; queue[j] j++; C'fQ Z,r-v
if (queue[k]>queue[j]) file://不用交换 Ve\P ,.
break; `:EU~4s\
SortUtil.swap(queue,j,k); G'6f6i|<I@
k = j; =-n7/
} ,\0>d}eh!
} bODyJ7=[
private void fixUp(int k) { qJ<Ghd`8v
while (k > 1) { U7d05y'
int j = k >> 1; %jj\w>
if (queue[j]>queue[k]) jI,?*n<
break; =1% <
SortUtil.swap(queue,j,k); r*W&SU9Z
k = j; OJPi*i 5*
} c:_dW;MJ0
} ;F\sMf{
>&uR=Yd
} >I;J!{
vK8!V7o~h%
} z]R)Bh
<'z.3@D
SortUtil: GQ=Pkko
8Z(\iZ5Rgj
package org.rut.util.algorithm; EY'48S
5tm:|.`SQ
import org.rut.util.algorithm.support.BubbleSort; -Oc
import org.rut.util.algorithm.support.HeapSort;
NUGiDJ+[
import org.rut.util.algorithm.support.ImprovedMergeSort; &3bh K5P
import org.rut.util.algorithm.support.ImprovedQuickSort; BYWs\6vK
import org.rut.util.algorithm.support.InsertSort; YfU6mQ
import org.rut.util.algorithm.support.MergeSort; 'n!kqP
import org.rut.util.algorithm.support.QuickSort; R'p-
4
import org.rut.util.algorithm.support.SelectionSort; P(Q}r7F~(
import org.rut.util.algorithm.support.ShellSort; 3"iJ/Hc}9
}i@%$Ixsn
/** &cB+la\_
* @author treeroot x_.}C%
* @since 2006-2-2 T6Ks]6m_
* @version 1.0 8WMGuv
*/ ue"e><c6:
public class SortUtil { vB1nj<]&z
public final static int INSERT = 1; gatxvR7H
public final static int BUBBLE = 2; Hrj@I?4
public final static int SELECTION = 3; 1|xo4fmV
public final static int SHELL = 4; ,ko0XQBl
public final static int QUICK = 5; _XUDPC(*qz
public final static int IMPROVED_QUICK = 6; /7p1y v
public final static int MERGE = 7; w.R2' WR
public final static int IMPROVED_MERGE = 8; BZAF;j
public final static int HEAP = 9; m15> ^i^W
m$bDWxm#e
public static void sort(int[] data) { Ai.^~#%X
sort(data, IMPROVED_QUICK); tY6QhhuS:
} Cw]bhaG
g
private static String[] name={ ThJ`-Ro
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^<QF*!
}; QDJe:\n
+]jJ: V
private static Sort[] impl=new Sort[]{ 4+4C0/$Y
new InsertSort(), uE:`Fo=y
new BubbleSort(), fd*<m8
new SelectionSort(), ;0]s:0WD0P
new ShellSort(), I vD M2q8f
new QuickSort(), ]ppws3*Pa
new ImprovedQuickSort(), {^*D5
new MergeSort(), f^9ntos|
new ImprovedMergeSort(), E8PlGQ~z{d
new HeapSort() B5H=#
}; 'w~e>$WI
[eO6H2@=z
public static String toString(int algorithm){ XZ[3v9?&n
return name[algorithm-1]; 1n )&%r
} 9Ts r g
YTYCv7
public static void sort(int[] data, int algorithm) { e?
n8S
impl[algorithm-1].sort(data); <Z\j#p:
} "| W``&pM
i4r8146D[
public static interface Sort { b{hdEb
public void sort(int[] data); i@hW" [A
} `beU2N
|g8Q.*"l[
public static void swap(int[] data, int i, int j) {
zv HeoM,
int temp = data; /[#5<;
data = data[j]; ]sG^a7Z.X
data[j] = temp; |^$?9Dn9.L
} j<C p&}X
} Sx}61 ?