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。 ~>uu1[/
插入排序: @<$_X1)s
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package org.rut.util.algorithm.support; D26A%[^O
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import org.rut.util.algorithm.SortUtil; ^,#MfF6
/** \eCQL(_
* @author treeroot 2 W Wr./q
* @since 2006-2-2 #{~3bgY
* @version 1.0 A}CpyRVCn
*/ 9R N ge;*
public class InsertSort implements SortUtil.Sort{ J';XAB }
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/* (non-Javadoc) XBos^Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GE#LcCa
*/ -O6\!Wo=-
public void sort(int[] data) { eB5<N?;s
int temp; {\5-b:#_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r' J3\7N!u
} trg&^{D<
} s/OXZ<C|
} A[ N>T\
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} p/?TU
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冒泡排序: 6'JP%~QlS
(^= Hq'D
package org.rut.util.algorithm.support; (=w ff5U
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import org.rut.util.algorithm.SortUtil; 0u8(*?
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/** uH8`ipX
* @author treeroot vQL)I
* @since 2006-2-2 f2FGod<CzN
* @version 1.0 FUKE.Uxd
*/
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public class BubbleSort implements SortUtil.Sort{ Tp%4{U/0`
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/* (non-Javadoc) Zbjj>*2%^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ ^<nN~@j
public void sort(int[] data) { -~imxPmZ
int temp; l%9nA.M'
for(int i=0;i for(int j=data.length-1;j>i;j--){ P%xz"l i
if(data[j] SortUtil.swap(data,j,j-1); Nx"v|"
} vh6#Bc)i%w
} 4r>buEU
} w\3'wD!
} -}r(75C
9TILrK
} 5zsXqBG
[EV}P&U
选择排序: |A@Gch fd
\l8$1p
package org.rut.util.algorithm.support; Y&_1U/}h
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import org.rut.util.algorithm.SortUtil; wq"AW yu
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/** `)R@\@jt
* @author treeroot S+C^7# lT
* @since 2006-2-2 jZ>'q/
* @version 1.0 P=9Zm
*/ "Z6: d"S`
public class SelectionSort implements SortUtil.Sort { ]]Da/^K=Z
`;R|SyrX
/* $0K%H
* (non-Javadoc) '((Ll
* _A.?:'-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zorTZ #5
*/ 'E,Bl]8C5
public void sort(int[] data) { 6\9 9WQ
int temp; ?$^qcpJCp
for (int i = 0; i < data.length; i++) { cnOk
int lowIndex = i; KCed!OJ+
for (int j = data.length - 1; j > i; j--) { :1wMGk
if (data[j] < data[lowIndex]) { B$ )6X
lowIndex = j; :=tPC A=
} ;pNHT*>u,
} :[N[D#/z
SortUtil.swap(data,i,lowIndex); tnmuCz
} Mr(~
*
} "ppT<8Qi'
K/u`Wz~A
} 0ZV)Y<DJ
w%k)J{\
Shell排序: tH"SOGfSt
X?.bE!3=
package org.rut.util.algorithm.support; ${ ~UA6
m!:7ur:Y
import org.rut.util.algorithm.SortUtil; bkl'0
p
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/** -j[n^y'v
* @author treeroot Sh]x`3 ).
* @since 2006-2-2 ~&~%q u
* @version 1.0 <P5;8
*/ lq_W;L
public class ShellSort implements SortUtil.Sort{ c+G: bb%p
GD'C^\EaZ
/* (non-Javadoc) 9kP!O_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Em@h5V
*/ *<U&DOYV:
public void sort(int[] data) { h{sW$WA
for(int i=data.length/2;i>2;i/=2){ ('uYA&9
for(int j=0;j insertSort(data,j,i); n a2"Sy=Yi
} >UJ&noUD#:
} !r.}y|t?;
insertSort(data,0,1); 2>O2#53ls0
} MZw%s(lv
H8K<.RY
/** `CK;,>i
* @param data <'~8mV1
* @param j uU.9*B=H9
* @param i 9$Mi/eLG2N
*/ vEzzdDwi6
private void insertSort(int[] data, int start, int inc) { OqBw&zm
int temp;
|k/; .
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ti3BlWQH
} u."fJ2}l0X
} M:`hb$k:
} sD{b0mZT
.4!N#'
} t48(GKF
Lf 0Hz")
快速排序: % C
3jxt
6eDIS|/
package org.rut.util.algorithm.support; 6@XutciK
HqXo;`Yy}
import org.rut.util.algorithm.SortUtil; {sm={q
NxXVW
/** {yb\p9q{Yo
* @author treeroot X^|oY]D
* @since 2006-2-2 %&_(IY$d
* @version 1.0 R\.huOJh
*/ o~-X7)]
public class QuickSort implements SortUtil.Sort{ 5&X
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6
/* (non-Javadoc) 9)l_(*F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AVyZ#`,
*/ oo Z-T>$
public void sort(int[] data) { #dpt=
quickSort(data,0,data.length-1); HJJ^pk&
} Q?a"uei[
private void quickSort(int[] data,int i,int j){ y{<#pS.
int pivotIndex=(i+j)/2; S-rqrbr|AT
file://swap 9wq%Fnt
SortUtil.swap(data,pivotIndex,j); 40#KcbMa|
%C3cdy_c
int k=partition(data,i-1,j,data[j]); Rm*}<JN31
SortUtil.swap(data,k,j); *(vq-IE\$
if((k-i)>1) quickSort(data,i,k-1); (j~V
if((j-k)>1) quickSort(data,k+1,j); 7&At_l_
M)J *Df0@
} ]~qN<x
/** `5 6QX'?
* @param data kH&ZPAI
* @param i vR)7qX}
* @param j 2YN`:"
* @return NdNfai
*/ llleo8
private int partition(int[] data, int l, int r,int pivot) { c}QJ-I
do{ NZTYT\7
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); mN eW|3a
SortUtil.swap(data,l,r);
?:FotnU*p
} MJG%HakK0
while(l SortUtil.swap(data,l,r); g\-3c=X
return l; $dnHUBB
} 2:N_c\Vi
^97ZH)Ww
} 2Y4&Sba^Y
w3w*"M
改进后的快速排序: hX_p5a1t
Dgm%Ng
package org.rut.util.algorithm.support; YxtkI:C?
AY;+Ws
import org.rut.util.algorithm.SortUtil; zrew:5*uZ
Yy)a,clZ*$
/** K D-_~uIF
* @author treeroot s4$m<"~
* @since 2006-2-2 %^l&fM*
* @version 1.0 l1)pr{A
*/ [~<',,tA0|
public class ImprovedQuickSort implements SortUtil.Sort { Gx!RaZ1
oPy zk7{
private static int MAX_STACK_SIZE=4096; @c!67Z
private static int THRESHOLD=10; O|RO
j
/* (non-Javadoc) @L!#i*> 9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WHZng QmY
*/ qE72(#:R*
public void sort(int[] data) { .:ZXtU
int[] stack=new int[MAX_STACK_SIZE]; 'q'Y:A?,
L||yQH7n
int top=-1; ++!E9GU{
int pivot; _~nex,;r
int pivotIndex,l,r; #@6L|$iX
3Gl]g/
stack[++top]=0; ,:(leWeA9
stack[++top]=data.length-1; <M OL{jan
GQ0 (&I
while(top>0){ tN3 {7'\7
int j=stack[top--]; ^Ai_/! "
int i=stack[top--]; -fx88
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d
pivotIndex=(i+j)/2; YaZt+WA
pivot=data[pivotIndex]; 'HWgvmw(
g**%J Xo
SortUtil.swap(data,pivotIndex,j); 0bxvM
M y"!j,Up
file://partition z){UuiUM+=
l=i-1; cNr][AzU@
r=j; ~R@m!'Ik
do{ q&$0i
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sHTePEJ_h
SortUtil.swap(data,l,r); Eb[H3v48,
} Wx|6A#cg!
while(l SortUtil.swap(data,l,r); Df,VV+
SortUtil.swap(data,l,j); N"x\YHp
V=4u7!ha
if((l-i)>THRESHOLD){ :iQ^1S`pH
stack[++top]=i; ROt0<^<
stack[++top]=l-1; khN:+V|
} =E}%>un
if((j-l)>THRESHOLD){ u1|P'>;lF
stack[++top]=l+1; _ K+V?-=
stack[++top]=j; "4k=(R?
} F}B/-".^
G2+)R^FSC
} uCP6;~Ns
file://new InsertSort().sort(data); )Kk(P/s
insertSort(data);
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}
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/** d+m6-4[_k
* @param data mf]( 3ZL
*/ rI^~9Rz
private void insertSort(int[] data) { Q"6hD?6.
int temp; >,"D9!
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R#7+
} @Wx`l) b
} /Xu;/MMpd3
} Xk&F4BJQk<
gLxT6v5wk.
} 28Ssb|
hKH$AEHEU}
归并排序: nhQ44qRgQ
IGK_1@tq
package org.rut.util.algorithm.support; V:(w\'wm
fs3-rXoB
import org.rut.util.algorithm.SortUtil; L=$?q/=-
cJHABdK-
/** orQV'
* @author treeroot PX69
* @since 2006-2-2 wKi}@|0[@
* @version 1.0 Y( V3PnH
*/ _8x'GK
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public class MergeSort implements SortUtil.Sort{ l)i&ATvCE
|`k1zc)9
/* (non-Javadoc) |>IUtUg\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (ifqwl62
*/ lC /Hib
public void sort(int[] data) { [DotS\p!z
int[] temp=new int[data.length]; w]W`R.
mergeSort(data,temp,0,data.length-1); '!+P{
} ;*wT,2;
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private void mergeSort(int[] data,int[] temp,int l,int r){ Msv*}^>
int mid=(l+r)/2; \8>
if(l==r) return ; ~}7$uW0ol
mergeSort(data,temp,l,mid); <m Ju v
mergeSort(data,temp,mid+1,r); TXd5v#_vo
for(int i=l;i<=r;i++){ SG
dfhno;
temp=data; {8!ZKlB
} k W<Yda<a
int i1=l; 6Q.{llO
int i2=mid+1; J8GXI :y
for(int cur=l;cur<=r;cur++){ `N|U"s;
if(i1==mid+1) -~vl+L
data[cur]=temp[i2++]; 7d|*postv
else if(i2>r) ]k::J>84
data[cur]=temp[i1++]; ba(arGZ+{
else if(temp[i1] data[cur]=temp[i1++]; zp7V\W;
&
else X
zi'Lu`
data[cur]=temp[i2++]; &\J?[>EJ.
} wMH[QYb<*
} sorSyuGr
&Q-[;
} yCF"Z/.
QHHW(InG<
改进后的归并排序: w?]ZU-
E;6Y? vJ
package org.rut.util.algorithm.support; lv<iJH\
Veb+^&
import org.rut.util.algorithm.SortUtil; u @{E{
,s1&O`
/** Q!4i_)rM
* @author treeroot N3uMkH-<
* @since 2006-2-2 -Z:]<;qU
* @version 1.0 5kGxhD
*/ "C_T]%'Wm
public class ImprovedMergeSort implements SortUtil.Sort { g\ErJ+i
JP{UgcaF
private static final int THRESHOLD = 10; ?TvQ"Y}k
Uj4Lu
/* ZWf-X
* (non-Javadoc) iBG`43;
* j2RRSz&9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >;&Gz-lm
*/ Sg-g^dIN1
public void sort(int[] data) { Ze-MAt
int[] temp=new int[data.length]; Yta1`
mergeSort(data,temp,0,data.length-1); lp,\]]
} M
(+.$uz
q>^hoW2$C
private void mergeSort(int[] data, int[] temp, int l, int r) { F0@Qgk]\
int i, j, k; FJO"|||Y'|
int mid = (l + r) / 2; aRbx
if (l == r) Up<~0
return; jr9&.8%W:v
if ((mid - l) >= THRESHOLD) :ar?0
mergeSort(data, temp, l, mid); ~}h^38
else 1s Br.+p
insertSort(data, l, mid - l + 1);
KR&s?
if ((r - mid) > THRESHOLD) M(qxq(#{U
mergeSort(data, temp, mid + 1, r); ;4!=DFbU
else *Wzwbwg
insertSort(data, mid + 1, r - mid); C1V# ?03eI
k]Zo-xh4
for (i = l; i <= mid; i++) { >B0D/:R9
temp = data; 6^Ph '
} ue@8voZhS/
for (j = 1; j <= r - mid; j++) { L59bu/LfL
temp[r - j + 1] = data[j + mid]; 1xz\=HOT
} K>kLUcC7Z
int a = temp[l]; IeVLn^?+:
int b = temp[r]; , 7Xqte
for (i = l, j = r, k = l; k <= r; k++) { cFLd)mt/
if (a < b) { O:1DOUYXs
data[k] = temp[i++]; )7W6-.d
a = temp; WE")xhV6
} else { 5^>n5u/
data[k] = temp[j--]; \ EZ+#3u
b = temp[j]; gC`)]*'tE
} F+Z2U/'a
} N=#4L$@-
} }'lNi^"XL
9mQ#L<Ps
/** s;J\Kc?"|
* @param data @&5 A&(
* @param l 9RxO7K
* @param i @;m$ua*|:
*/ R*yU<9Mm8
private void insertSort(int[] data, int start, int len) { 7IW> >RBF
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); H>.B99vp
} ]M3#3Ha"
} "V3}t4
} XvskB[\
} rs:Q%V
^
A:eG5K}
堆排序: x5OC;OQc
XrS\+y3
package org.rut.util.algorithm.support; cn%2OP:L^
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AQ
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import org.rut.util.algorithm.SortUtil; #.<V^
1TjZ#yP%1
/** aX^+ O,
* @author treeroot f7J,&<<5w
* @since 2006-2-2 8Mu;U3cIW
* @version 1.0 Kd3QqVJBz1
*/ #dc1pfL!y{
public class HeapSort implements SortUtil.Sort{ tWY2o3j
iCTQ]H3
/* (non-Javadoc) KFDS q"j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i"HgvBHx
*/ ~O:
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public void sort(int[] data) { m&IsDAn
MaxHeap h=new MaxHeap(); s-k_d<
h.init(data); f-g1[!"F
for(int i=0;i h.remove(); DA"}A`HfI
System.arraycopy(h.queue,1,data,0,data.length); vG
Vd
} `HW:^T
by86zX
private static class MaxHeap{ 8~ #M{}
Z0ReWrl;`
void init(int[] data){ alm-
r-Kb3
this.queue=new int[data.length+1];
u1cu]Sj0
for(int i=0;i queue[++size]=data; 0xpx(T[
fixUp(size); !QEL"iJ6M'
} 4_LQ?U>$
} e*]r
4/*H.Fl
private int size=0; d~*TIN8Ke~
0oU=RbC
private int[] queue; dqe7s Zl!
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public int get() { lKKERO5+
return queue[1]; [VSU"AJY
} v27Ja .tA
$/_qE
public void remove() { ](K0Fwo`;"
SortUtil.swap(queue,1,size--); #Hu~}zy
fixDown(1); 8o-bd_
} :b/jNHJU
file://fixdown 8Fq_i-u
private void fixDown(int k) { K:5eek
int j; h`5)2n+ P
while ((j = k << 1) <= size) { }$gmK
if (j < size %26amp;%26amp; queue[j] j++; D59T?B|BdD
if (queue[k]>queue[j]) file://不用交换 fgF;&(b
break; eThy+
SortUtil.swap(queue,j,k); SKXD^OH
k = j; HIf{Z* mb
} ijUzC>O+q
} 4TRG.$2[
private void fixUp(int k) { qv+R:YYOq
while (k > 1) { Q M1F?F
int j = k >> 1; `/Y+1 aD
if (queue[j]>queue[k]) H:S,\D?%2x
break; w1|Hy2D`0
SortUtil.swap(queue,j,k); =_pwA:z"A
k = j; 3Wx,oq;4-
} y,m2(V
} sR_xe}-
uS5o?fg\e
} 3071:W
BWUq%o,@g
} 61K"(r~
kA#vByf`v
SortUtil: svhrf;3:
wu~hqd
package org.rut.util.algorithm; O`W%Tr
F 3RB
import org.rut.util.algorithm.support.BubbleSort; (36K3=Q a
import org.rut.util.algorithm.support.HeapSort; Yx)o:#2
import org.rut.util.algorithm.support.ImprovedMergeSort; n9hm790x-
import org.rut.util.algorithm.support.ImprovedQuickSort; RKkGITDk
import org.rut.util.algorithm.support.InsertSort; ]~c+'E`
import org.rut.util.algorithm.support.MergeSort; BWq/TG=>
import org.rut.util.algorithm.support.QuickSort; %XRN]tsu
import org.rut.util.algorithm.support.SelectionSort; .v`b[4M4
import org.rut.util.algorithm.support.ShellSort; B~gV'(9g
S GcBmjP
/** 46,j9x
* @author treeroot _sMs}?^
* @since 2006-2-2 sH!O0WL
* @version 1.0 N:BL=}V
*/
6rDfQ`f\p
public class SortUtil { <'m6^]:
public final static int INSERT = 1; @h9MxCE!
public final static int BUBBLE = 2; UuJjO^t
public final static int SELECTION = 3; 45+{nN[
public final static int SHELL = 4; ~1(j&&kXet
public final static int QUICK = 5; }E&NPp>
public final static int IMPROVED_QUICK = 6; p2pAvlNoF
public final static int MERGE = 7; 1;r69e
public final static int IMPROVED_MERGE = 8; ;4~U,+Av
public final static int HEAP = 9; c{3rl;Cs
X>l*v\F9
public static void sort(int[] data) { t@B(+
sort(data, IMPROVED_QUICK); l?E|RKp
} 2VgP
private static String[] name={ \C|cp|A*&
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zICI_*~
}; vv5i? F
%FA@)?~
private static Sort[] impl=new Sort[]{ ! -tz4vjw
new InsertSort(), fC<m^%*zgA
new BubbleSort(), .b>TK
new SelectionSort(), igkz2S I
new ShellSort(), 2C
"=!'
new QuickSort(), Oh!(@
new ImprovedQuickSort(), ~brFo2
new MergeSort(), ClUSrSp
new ImprovedMergeSort(), *"9<TSU%m
new HeapSort() 665[
}; +!O-kd
8tc*.H{^+
public static String toString(int algorithm){ ?y%t}C\W
return name[algorithm-1]; :L$4*8@`+
} $k0H9_
<Oz66bTze
public static void sort(int[] data, int algorithm) { ([k7hUP
impl[algorithm-1].sort(data); Pv){sYUh
} $99R| ^
l5O=VqCj
public static interface Sort { ]((i?{jb(
public void sort(int[] data); t_c?Wp~tH
} .9M.|
AU{:;%.g
public static void swap(int[] data, int i, int j) { bLS&H[fK
int temp = data; bhg}-dto
data = data[j]; 8vD3=yK%^
data[j] = temp; ME+em1ZH
} %a8&W
} w~@[r4W