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。 @+7CfvM
插入排序: /d*[za'0
qs>&Xn
package org.rut.util.algorithm.support; $U4[a:
&>xz
import org.rut.util.algorithm.SortUtil; k![oJ.vHD
/** 9T_fq56Oh6
* @author treeroot rtdEIk
* @since 2006-2-2 RpwDOG
* @version 1.0 eX$RD9
H
*/ kD
me>E=
public class InsertSort implements SortUtil.Sort{ t\WU}aKML
fb[? sc
/* (non-Javadoc) b#(X+I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %uz6iQaq]X
*/ 9I [k3
public void sort(int[] data) { NXMZTZpB7
int temp; O$7cN\Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >zfFvx_q
} *Ksk1T+>
} '<U4D
} pv,z$3Q
B:VGa<lx5
} =wMq!mBd
Z# %s/TL
冒泡排序: I23"DBR3
~(`&hYE
package org.rut.util.algorithm.support; uN=f(-"
VA@
import org.rut.util.algorithm.SortUtil; .cz7jD
wUfm)Q#
/** eExI3"|Q
* @author treeroot x^Zm:Jrw~
* @since 2006-2-2
s&iu+>
* @version 1.0 kkIG{Bw
*/ QYEGiT
public class BubbleSort implements SortUtil.Sort{ K!8l!FFl
pf&U$oR4
/* (non-Javadoc) \c1>15
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bPIo9clq
*/ '=(D7F;
public void sort(int[] data) { 8Oa+,?<0x
int temp; @<yY Mo7
for(int i=0;i for(int j=data.length-1;j>i;j--){ 40O@a:q*
if(data[j] SortUtil.swap(data,j,j-1); q2U?EP{8~
} hh[x(O)TC~
} `{NbMc\
]
} ]:}7-;$V
} iD<}r?Z
!ScEA=
} /!sGO:
OBf$Z"i
选择排序: a@-bw4SD
T^ - - :1
package org.rut.util.algorithm.support; 11%Zx3
}:S}jo7
import org.rut.util.algorithm.SortUtil; }l&y8,[:
>DAi-`e
/** ]GDjR'[z
* @author treeroot fg/hUUl
* @since 2006-2-2 4KR$s Kq$q
* @version 1.0 %'/^[j#
*/ \hdil`{>
public class SelectionSort implements SortUtil.Sort { :kC*<f\
!+DhH2;)F
/* 4n*`%V
* (non-Javadoc) U|b)Bw<P
* &[
,*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8\G"I
*/ )6%a9&~H
public void sort(int[] data) { }@~+%_;
int temp; j
Y(|z*|
for (int i = 0; i < data.length; i++) { ]MC5 uKn
int lowIndex = i; [#fz[U
for (int j = data.length - 1; j > i; j--) { zYM0?O8pJ~
if (data[j] < data[lowIndex]) { -XnOj2
lowIndex = j; $RYOj{1
} R[rOzoNp0
} wRZS+^hx
SortUtil.swap(data,i,lowIndex); 'wWuR@e#&
} g9Ty%|Q7(
} c<sq0('`
xEv?2n@A
} `NNP}O2
4ves|pLET
Shell排序: 1@9M[_<n5
$W9dUR0
package org.rut.util.algorithm.support; Ya-GDB;L
LYiIJAZ.
import org.rut.util.algorithm.SortUtil; D~M*]&
|E;+j\
/** 0U !&|i\
* @author treeroot +|H,N7a<
* @since 2006-2-2 GiKhdy
* @version 1.0 ""m/?TZq'
*/ ~%h&ELSw
public class ShellSort implements SortUtil.Sort{ J ~KygQ3%
!%B-y9\
/* (non-Javadoc) oi8M6l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U;*O7K=P
*/ s<oT,SPt
public void sort(int[] data) { PS0/Ok
for(int i=data.length/2;i>2;i/=2){ cH5RpeP
for(int j=0;j insertSort(data,j,i); b;nqhO[f}
} P76gJ@#m
} wr~Qy4 ny
insertSort(data,0,1); [Fv_~F491
} vQj{yJ\l1
&*oljGt8
/** ?A04qk
* @param data qE8Di\?
* @param j h,6> ^A
* @param i SwaMpNXL
*/ orbz`IQc
private void insertSort(int[] data, int start, int inc) { JSx[V<7m
int temp; hLVgP&/E
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); shO4>Ha
} \FF|b"E_=
} ",' Zr<T
} @Fzw_qr
M
@jq H8
} GIfs]zVr`
Z-yoJZi
快速排序: PZ#aq~>w
>U?#'e{qW
package org.rut.util.algorithm.support; L0w2qF
4G hg~0
import org.rut.util.algorithm.SortUtil; mX, @yCI
er2;1TW3E
/** R^]a<g,
* @author treeroot P@x@5uC2
* @since 2006-2-2 s>[Oe|`
* @version 1.0 =h|7bYLy
*/ g|h;*
public class QuickSort implements SortUtil.Sort{ Z_7TD)
$"k1^&&E
/* (non-Javadoc) %NfH`%`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s@Loax6@B
*/ /iJsa&W}
public void sort(int[] data) { ad52a3deR
quickSort(data,0,data.length-1); OL^DuoB4q
} ;iJ}[HUo
private void quickSort(int[] data,int i,int j){ ywB0
D`s'
int pivotIndex=(i+j)/2; j&b<YPZ
file://swap _Y$v=!fY&
SortUtil.swap(data,pivotIndex,j); !3o/c w9
C4t~k
int k=partition(data,i-1,j,data[j]); prB:E[1
SortUtil.swap(data,k,j); 8#4Gs Q"
if((k-i)>1) quickSort(data,i,k-1); [?(qhp!
if((j-k)>1) quickSort(data,k+1,j); #a'CoJs
1_StgFu u
} \&U"7gSL
/** [4@@b"H
* @param data 8ZJ6~~h
* @param i f#hmMa
* @param j ,u!_mV
* @return W)Y:2P<.
*/ 4VkJtu5
private int partition(int[] data, int l, int r,int pivot) { AgB$
w4
do{ <y"lL>JR
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); - s2Yhf
SortUtil.swap(data,l,r); #qJ6iA6{
} 6Q&i=!fQ
while(l SortUtil.swap(data,l,r); =#wE*6T9
return l; T+FlN-iy)
} ;!OME*?m<
V#c=O}
} 6;Mv)|FJF
]eX(K5 A
改进后的快速排序: rP/W,!
7:K
! \5)!B
package org.rut.util.algorithm.support; mXMU
Nov
An+
import org.rut.util.algorithm.SortUtil; U.<a d
c:s[vghH^#
/** r4iT
9D
* @author treeroot &yqk96z
* @since 2006-2-2 ?}jjBJ&
* @version 1.0 6'e 'UD
*/ f9'dZ}B
public class ImprovedQuickSort implements SortUtil.Sort {
q ^Gj
IP
Hl8\*#;C&>
private static int MAX_STACK_SIZE=4096; kq(]7jU$[
private static int THRESHOLD=10; B0gs<E
/* (non-Javadoc) $cLZ,N24
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6^FUuj.
*/ d ;,C[&
public void sort(int[] data) { =H^~"16
int[] stack=new int[MAX_STACK_SIZE]; -cUw}
t 1G2A`
int top=-1; jtqU`|FSQ
int pivot; 1J&hm[3[K
int pivotIndex,l,r; Hq,NOP
nQn=zbZ3
stack[++top]=0; gV'=uz v
stack[++top]=data.length-1; 7'@~TM
%*Yb
J_j7
while(top>0){ tcI Z
2H%
int j=stack[top--]; mk6>}z*
int i=stack[top--]; VY0-18 o
ntZHO}'
pivotIndex=(i+j)/2; b'RBel;W
pivot=data[pivotIndex]; q-e3;$
w"
A{R
SortUtil.swap(data,pivotIndex,j); 5)gC<
a
JQ_V
file://partition jLEO-<)-)
l=i-1; c2d1'l]n
r=j; nNRc@9Lt
do{ )xTu|V
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5L\Im^
SortUtil.swap(data,l,r); |lVi* 4za%
} vnX~OVz2
while(l SortUtil.swap(data,l,r); gNh4c{Al9
SortUtil.swap(data,l,j); yQC8 Gt8
jW}hLjlN
if((l-i)>THRESHOLD){ mf2Qu
stack[++top]=i; ]YB,K)WQ
stack[++top]=l-1; ~sCdvBA
} :}o{<U
if((j-l)>THRESHOLD){ zZ8:>2Ps(
stack[++top]=l+1; X
u>]$+u#
stack[++top]=j; 2JHV*/Q
} !'=<uU-
D5!I{hp"
} |(9l_e|
file://new InsertSort().sort(data); Jz-RMX=
insertSort(data); 5"Y:^_8
} `QT9W-0e^
/** o7yvXrpG(U
* @param data "}<baz
*/ P_M!h~
private void insertSort(int[] data) { .?r}3Ch
int temp; N$cAX^~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D]K?ntS[*
} vGp`P
} PxJvE*6^H
} 1c$ce+n~
AHLXmQl
} Kq:vTz&<
'8|joj>G=
归并排序: PB@jh}
p{w;y6e
package org.rut.util.algorithm.support; zBqNE`
s18A
import org.rut.util.algorithm.SortUtil; <{.pYrn
H`T}k+e2-N
/** IZZ
$p{
* @author treeroot ~|`jIqU
* @since 2006-2-2 G\*`%B_ n
* @version 1.0 44UN*_qG
*/ n5?7iU&JIo
public class MergeSort implements SortUtil.Sort{ ymA8`k5>@
`(@{t:L
/* (non-Javadoc) ABhQ7
x|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p1,.f&(f
*/ z-`4DlJUS
public void sort(int[] data) { 8|rlP
int[] temp=new int[data.length]; /ASpAl[J
mergeSort(data,temp,0,data.length-1); A*? Qm
} Kuh)3/7
p[D,.0SuC
private void mergeSort(int[] data,int[] temp,int l,int r){ 49 1 1
int mid=(l+r)/2; m>'#664q1
if(l==r) return ; 8*(|uX
mergeSort(data,temp,l,mid); oh >0}Gc8
mergeSort(data,temp,mid+1,r); *BQy$dfE
for(int i=l;i<=r;i++){ kJ B u7
temp=data; _;G|3>5u
} IHe?/oUL"b
int i1=l; *GM.2``e
int i2=mid+1; ;vgaFc]
for(int cur=l;cur<=r;cur++){ \B8[UZA.&
if(i1==mid+1) 2!}rHw
data[cur]=temp[i2++]; .IORvP-M&
else if(i2>r) f_> lz
data[cur]=temp[i1++]; eo4v[V&
else if(temp[i1] data[cur]=temp[i1++]; p 4l B#
else `AhTER
data[cur]=temp[i2++]; AJt4I
W@
} us^J!
s7
} c nV2}U/\
NKRH>2,
} $(pVE}J
6/L34VH
改进后的归并排序: <7J\8JR&=
oo!JAv}~
package org.rut.util.algorithm.support; [L>AU;
:
/3d6Og
import org.rut.util.algorithm.SortUtil; ?,*KA Gg%
ef
-PlGn
/** CNyV6jb
* @author treeroot fb|lWEw5h.
* @since 2006-2-2 _U%2J4T2
* @version 1.0 nnMRp7LQ-
*/ ((]Sy,rdk
public class ImprovedMergeSort implements SortUtil.Sort { f15n ~d
rNX]tp{j
private static final int THRESHOLD = 10; e>$E67h<~
5x'
^.$K >
/* . AX6xc6
* (non-Javadoc) F2mW<REg{
* 7By&cdl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !o8(9F
*/ 7.C~ OrGR
public void sort(int[] data) { (/Dr=D{ `
int[] temp=new int[data.length]; SR {KL#NC
mergeSort(data,temp,0,data.length-1); Blv@u ?
} -<aN$O
~.8p8\H
private void mergeSort(int[] data, int[] temp, int l, int r) { 1Ozy;;\-9
int i, j, k; + Scw;gO
int mid = (l + r) / 2; ]08
~"p
if (l == r)
:O{
ZZ
return; WB=|Ty~l
if ((mid - l) >= THRESHOLD) .V|o-~c
mergeSort(data, temp, l, mid); *`bAu *
else 4'0rgS
insertSort(data, l, mid - l + 1); EnXTL]=0S
if ((r - mid) > THRESHOLD) X##hSGQM
mergeSort(data, temp, mid + 1, r); *W=R:Bl!
else C2W&*W*
insertSort(data, mid + 1, r - mid); 3X}>_tj
g;G.uF&
for (i = l; i <= mid; i++) { ,$;pLjo6
temp = data; :HDU\|{^
} 2< Q3-|/i
for (j = 1; j <= r - mid; j++) { 0]`%iG|
temp[r - j + 1] = data[j + mid]; Y`
tB5P
} x8E!Ko](
int a = temp[l]; ^Euqy,8}
int b = temp[r]; zX ?@[OT
for (i = l, j = r, k = l; k <= r; k++) { ~!TRR.
if (a < b) { SHP_
data[k] = temp[i++]; H6]z9 8
a = temp; S%k](\7!
} else { 8zk?:?8%{
data[k] = temp[j--]; B&c*KaK;~
b = temp[j]; 44(l1xEN+
} *9xv0hRQ%?
} :sXn*k4v
} W\J wEb9Y
/|2 hW`G
/** 4Rev7Mc
* @param data h;2n2.Q
* @param l A>W8^|l6+-
* @param i p1(<F_Kta
*/ :I^I=A%Pe(
private void insertSort(int[] data, int start, int len) { B]|"ePj-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `f+l\'.s
} e`Vb.E)
} u.L{3gkT
} uO;_T/^u
} T_*R^Ukb5
q3-V_~5^/z
堆排序: H8'_.2vwX
0*}%v:uN9
package org.rut.util.algorithm.support; k874t D
x6={)tj
import org.rut.util.algorithm.SortUtil; !`?*zf
6l-V%3-
/** *T{P^q.s~[
* @author treeroot .YcI .
* @since 2006-2-2 x*2' I
* @version 1.0 !/Wp0E'A
*/ 6Cd% @Q2cr
public class HeapSort implements SortUtil.Sort{ S,~DA3
RkuPMs
Hw;
/* (non-Javadoc) U k*HRudt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;OynkZs)
*/ *%wfR7G[B
public void sort(int[] data) { j=~c(
B
MaxHeap h=new MaxHeap(); l2LUcI$ x
h.init(data); aL%amL6CX
for(int i=0;i h.remove(); YFY$iN~B,
System.arraycopy(h.queue,1,data,0,data.length); ({_Dg43O'[
} ?E:L6,a
98AX=%8
private static class MaxHeap{ N]6M4j!
szx7CP`<8
void init(int[] data){ W4~:3Sk
this.queue=new int[data.length+1]; Ot#O];3
for(int i=0;i queue[++size]=data; iI(7{$y
fixUp(size); 1"5-doo
} R"`7aa6
} wa*/Am9;~
5??\[C^"}
private int size=0; }- P
='AyL
/?wH1 ,
private int[] queue; u!VAAX
Q-g}{mFS
public int get() { 2po>%Cp
return queue[1]; 1^4z/<ZWm
} nR1QS_@{L
qvH7 otA
public void remove() { U*sQYt<?g
SortUtil.swap(queue,1,size--); 9OnH3
fixDown(1); %8a886;2
} ~@wM[}ThP$
file://fixdown g:sn/Zug]
private void fixDown(int k) { 6*n<emP
int j; P:gN"f6
while ((j = k << 1) <= size) { zrg#BXj7
if (j < size %26amp;%26amp; queue[j] j++; _b8?_Zq
if (queue[k]>queue[j]) file://不用交换 5_MqpCL
break; \Gk4J<
SortUtil.swap(queue,j,k); E8=8OX/{Y
k = j; u'BuZF
} :"4Pr/}rT
} "/&_B
private void fixUp(int k) { |*+f N8
while (k > 1) { 2HemPth
int j = k >> 1; ,@1.&!F4it
if (queue[j]>queue[k]) X <<hb
break; D<
h+r?
SortUtil.swap(queue,j,k); hS}d vZa
k = j; feH|sz`e
} }Ra'`;D$
} 1k
*gbXb
!F_BLHig
} DFKumw>!
)Uv lEG']
} 9svn B@
y.l`NTT]<
SortUtil: ^}gQh#
m6
)s X&
package org.rut.util.algorithm; e /4{pe+,
c3>#.NP_
import org.rut.util.algorithm.support.BubbleSort; B4 cm_YGE
import org.rut.util.algorithm.support.HeapSort; "|6#n34
import org.rut.util.algorithm.support.ImprovedMergeSort; U?}>A5H
import org.rut.util.algorithm.support.ImprovedQuickSort; ^" EsBt
import org.rut.util.algorithm.support.InsertSort; KAucSd`
import org.rut.util.algorithm.support.MergeSort; jJxV)AIY
import org.rut.util.algorithm.support.QuickSort; Gqz<;y
import org.rut.util.algorithm.support.SelectionSort; 8U5L|Ny.q
import org.rut.util.algorithm.support.ShellSort; l#W9J.q(
q-g3!
/** $H9+>Z0(
* @author treeroot b`=\<u8
* @since 2006-2-2 %ifq4'?Z
* @version 1.0 vyt$
*/ *P#okwp
public class SortUtil { wap@q6fz<
public final static int INSERT = 1; f<`is+"
public final static int BUBBLE = 2; py9HUyr5eZ
public final static int SELECTION = 3; 'ow`ej
public final static int SHELL = 4; S|{'.XG
public final static int QUICK = 5; *[-% .=[7
public final static int IMPROVED_QUICK = 6; >>ncq$
public final static int MERGE = 7; lAxbF
public final static int IMPROVED_MERGE = 8; 0
s-IW
public final static int HEAP = 9; nnV(MB4z1
kXmnLxhS/
public static void sort(int[] data) { SOq{`~,4B
sort(data, IMPROVED_QUICK); ~qG`~/7
} uK:?6>H
private static String[] name={ F3aOKV^
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" a5v}w7vL
}; TfD]`v`]
B} %B4&Ij
private static Sort[] impl=new Sort[]{ rHir>
p
new InsertSort(), iG\]
new BubbleSort(), dA`.
new SelectionSort(), ]pZxbs&Vb
new ShellSort(), ^=H. .pr
new QuickSort(), SxHj3,`#C
new ImprovedQuickSort(), {c'2{`px 5
new MergeSort(), CMm:Vea
new ImprovedMergeSort(), kIb)I(n
new HeapSort() NDJIaX:]
}; iBq|]
PhHBmMGL
public static String toString(int algorithm){ =
h
_>OA
return name[algorithm-1]; {R2gz]v4
} u*I=.
TV~<1vj
public static void sort(int[] data, int algorithm) { MT8BP)C
impl[algorithm-1].sort(data); x-Kq=LFy.
} [Ch)6p
[7Yfv
Xp
public static interface Sort { ;\F3~rl
public void sort(int[] data); CnJrJ>l
} t8Sblgq
{Lex((
public static void swap(int[] data, int i, int j) { mG?g
int temp = data; w"Q6'/P
data = data[j]; JMMT886
data[j] = temp; U4J9bp|
} c~@Z
} -'j_JJ