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。 CXi[$nF3
插入排序: 9s1^hW2%Q
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package org.rut.util.algorithm.support; [X91nUz#
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import org.rut.util.algorithm.SortUtil;
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/** +I?k8',pi
* @author treeroot 4,>9N9.?9
* @since 2006-2-2 P)cEYk
* @version 1.0 !6x7^E;c
*/ CW2)1%1iz
public class InsertSort implements SortUtil.Sort{ =t`cHs29
}*C*!?pcd
/* (non-Javadoc) 3I(;c ,S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K:^0*5Y-k
*/ `2hg?(ul
public void sort(int[] data) { w {"1V7|
int temp; jwUX?`6jX
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I _gE`N
} >ZW|wpO
} Z/dhp0k
} 4Us_Z{.
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} r?IBmatK/
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冒泡排序: k(M:#oA!
QZtQogNy#
package org.rut.util.algorithm.support; rOz1tY)l0d
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import org.rut.util.algorithm.SortUtil; lj UdsU w
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/** NSBcYObX
* @author treeroot b]fx
* @since 2006-2-2 dOa9D
* @version 1.0 v+I-*,R
*/ Io|Du
public class BubbleSort implements SortUtil.Sort{ vP=68muD
O =;jDWE
/* (non-Javadoc) J/O{x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +<j7^AEG
*/ UoPY:(?;i
public void sort(int[] data) { s*s~yH6
int temp; Q@7d:v
for(int i=0;i for(int j=data.length-1;j>i;j--){ Bp3E)l
if(data[j] SortUtil.swap(data,j,j-1); <N1wET-
} B]@25
} FJ-H
;
} XbqMWQN*
} I/%v`[
?C#E_
} GB35o uE
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选择排序: N+h05`
l?=\9y
package org.rut.util.algorithm.support; jj1\oyQ8
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import org.rut.util.algorithm.SortUtil; OQ7 `n<I<)
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/** -^5467
* @author treeroot u8]FJQ*\6+
* @since 2006-2-2 h693TS_N
* @version 1.0 <^'{=A>
*/ #{vC =m73
public class SelectionSort implements SortUtil.Sort { t*=[RS*
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/* W*t]
d
* (non-Javadoc) wWy;dma#
* TI8r/P?
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'gvR?[!t
*/ n{FjFlX2=
public void sort(int[] data) { ocFk#FW
int temp; z
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for (int i = 0; i < data.length; i++) { Aeb(b+=
int lowIndex = i; XzHR^^;u"*
for (int j = data.length - 1; j > i; j--) { b:D92pH
if (data[j] < data[lowIndex]) { 8.[F3Tk=
lowIndex = j; Fq@o_bI
} B*,)@h
} Y.\x.Hg
SortUtil.swap(data,i,lowIndex); $[A\i<#
} tqZ+2c<W3
} NS~;{d\
DK\XC%~m
} \xj;{xc
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Shell排序: F5Z,Jmi^M
d=PX}o^
package org.rut.util.algorithm.support; _r*\ BM8y
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import org.rut.util.algorithm.SortUtil; [/CGV8+
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/** b,E ?{uG
* @author treeroot D &"D[|@
* @since 2006-2-2 y
%Q. (
* @version 1.0 <Gi%+I@szl
*/ n4/Wd?#`
public class ShellSort implements SortUtil.Sort{ Gv_~@MN
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/* (non-Javadoc) #GE]]7:Na
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q$c6l[(g
*/ ;:fW]5"R
public void sort(int[] data) { rG}e\ziKuj
for(int i=data.length/2;i>2;i/=2){ 4,e'B-.
for(int j=0;j insertSort(data,j,i); z# ^fS
|
} AJ bCC
} TI4Hu,rc
insertSort(data,0,1); YV<y-,Io
} ,U z8 _r
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/** ?T/]w-q>
* @param data YQn<CjZ8af
* @param j "XR=P>
xk
* @param i wlT8|
*/ STp9Gh-
private void insertSort(int[] data, int start, int inc) { L~Gr,i
int temp; #h5lz%2g
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `RL
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} P>VoA
} ) *~A|[
} 1f`De`zXzr
"bm|p/A
} m2c'r3 UEu
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快速排序: ;=Ma+d#
C\EIaLN<
package org.rut.util.algorithm.support; 7$'AH:K
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import org.rut.util.algorithm.SortUtil; 6ZqU:^3
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/** RdYmh>c
* @author treeroot EtKq.<SJ
* @since 2006-2-2 +/~]fI
* @version 1.0 Xp:A;i9
*/ {]k#=a4
public class QuickSort implements SortUtil.Sort{ +e>SK!kB7
#ibwD:{
/* (non-Javadoc) f#0HiE!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]n!V
*/ Mu\V3`j
public void sort(int[] data) { T/_u;My;
quickSort(data,0,data.length-1); =AIFu\9#a`
} QK]P=pE'C
private void quickSort(int[] data,int i,int j){ Vu:ZG*^
int pivotIndex=(i+j)/2; ;W,* B.~
file://swap [';o -c"!
SortUtil.swap(data,pivotIndex,j); srVWN:uuH
sbW+vc
int k=partition(data,i-1,j,data[j]); !8H0.u
rw
SortUtil.swap(data,k,j); 1dQAo1
if((k-i)>1) quickSort(data,i,k-1); aZN?V}^+
if((j-k)>1) quickSort(data,k+1,j); FDMQLx f
Z hfp>D
} Uwc%'=@
/** Lce,]z\_
* @param data g\q .
* @param i xMJ-=
* @param j +
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* @return e~]P _53
*/ I-]G{
private int partition(int[] data, int l, int r,int pivot) { ]9oj,k
do{ -9b=-K.y
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1bFZyD"
SortUtil.swap(data,l,r); \p4*Q}t
} .]v>LsbhF
while(l SortUtil.swap(data,l,r); dn(!wC]
return l; kR<sSLEb
} f2WVg;Z
aTvyzr1
} C'JI%HnQ
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改进后的快速排序: =XfvPBA
8<VDp Y
package org.rut.util.algorithm.support; !db=Iz5)
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import org.rut.util.algorithm.SortUtil; q8{Bx03m6
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/** Z",0 $Gxu
* @author treeroot .I`>F/Sjr
* @since 2006-2-2 O*u
* @version 1.0 %J*1F
*/ Q9bnOvKe|
public class ImprovedQuickSort implements SortUtil.Sort { >ywl()4O
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private static int MAX_STACK_SIZE=4096; T9yI%;D
private static int THRESHOLD=10; PaTOlHr
/* (non-Javadoc) $DDO9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +6WjOcu
*/ dn h qg3Y
public void sort(int[] data) { .\b.l@O<Z
int[] stack=new int[MAX_STACK_SIZE]; b `P6Ox3
jJ2rfdfj
int top=-1; 6()Jx%
int pivot; !X}+JeU'
int pivotIndex,l,r; MT{1/A;`)
*).
stack[++top]=0; z
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stack[++top]=data.length-1; C6e5*S
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while(top>0){ Es[3Ppz
int j=stack[top--]; lMgguu~qg
int i=stack[top--]; CEj_{uf|
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pivotIndex=(i+j)/2;
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pivot=data[pivotIndex]; 3~sV-
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SortUtil.swap(data,pivotIndex,j); ) 8xbc&M
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file://partition R~=c1bpdq
l=i-1; z(A60b}
r=j; fHaF9o+/b
do{ (Nzh1ul\}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ic3a\FTr\
SortUtil.swap(data,l,r); ^iH[
22b4
} nk!uO^
while(l SortUtil.swap(data,l,r); 6PsT])*>DE
SortUtil.swap(data,l,j); xhALJfv
5YrzOqg=
if((l-i)>THRESHOLD){ M&iXdw&
stack[++top]=i; W%rUa&00
stack[++top]=l-1; O]IAIM
} N1Y
uLG:
if((j-l)>THRESHOLD){ @.L#u#
stack[++top]=l+1; FO>?>tK 0
stack[++top]=j; U R^r>
} DlzL(p@r
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} rw)!>j+&A
file://new InsertSort().sort(data); zeGWM,!
insertSort(data); 1Ne;U/
} kiF}+,z"
/** ",~ZO<P
* @param data $bhI2%_`M
*/ z^wod
private void insertSort(int[] data) { oyiG04H&
int temp; n{W(8K6d@[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,L%]}8EL"
} M[985bl
} ~JRq :
} ;Qt%>Uo8
@CM5e!
} 0s8fF"$
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归并排序: I*3>>VN
p63fpnH
package org.rut.util.algorithm.support; q>+!Ete1p
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import org.rut.util.algorithm.SortUtil; HMD\)vMK6
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/** ,./n@.na
* @author treeroot 2(uh7#Q
* @since 2006-2-2 y=Eb->a){
* @version 1.0 3B]E2
*/ #+<YFm\i
public class MergeSort implements SortUtil.Sort{ x'-gvbj!
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/* (non-Javadoc) w.rcYywI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Swf%WuDj
*/ (<.\v@7HC
public void sort(int[] data) { papMC"<g$
int[] temp=new int[data.length]; 7Tp+]"bL
mergeSort(data,temp,0,data.length-1); 3Z~_6P^
+N
} }S*]#jr&
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private void mergeSort(int[] data,int[] temp,int l,int r){ &CQ28WG X
int mid=(l+r)/2; :/gHqEC24
if(l==r) return ; #HP-ne; #
mergeSort(data,temp,l,mid); Jr'a_(~
mergeSort(data,temp,mid+1,r); +b_[JP2
for(int i=l;i<=r;i++){ X6}W]
temp=data; sMLXn]m
} vMY!Z1.*
int i1=l; CY=lN5!J
int i2=mid+1; I\Y N!
for(int cur=l;cur<=r;cur++){ KO`dAB F}
if(i1==mid+1) Ze/\IBd
data[cur]=temp[i2++]; \R9izuc9
else if(i2>r) [zl4"|_`
data[cur]=temp[i1++]; oumbJ7X=L
else if(temp[i1] data[cur]=temp[i1++]; e)s
l
else cD9U^SOS
data[cur]=temp[i2++]; w3VgGc~
} 8_wh9
} 1\{FK Ot
AcJrJS)~
} HS*Y%*
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改进后的归并排序: u)zv`m
7m%12=Im5
package org.rut.util.algorithm.support; =i}lh}(
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import org.rut.util.algorithm.SortUtil; G]$EIf'
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/** $KT)Kz8tF
* @author treeroot )zy;!
* @since 2006-2-2 <l!:#u
* @version 1.0 tZx}/&m-
*/ amExZ/
public class ImprovedMergeSort implements SortUtil.Sort { s;l"'6:_
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private static final int THRESHOLD = 10; mcidA%
o&M.9V?~~
/* _PGd\>Ve
* (non-Javadoc) 0nBDF79
* b)#rUI|O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g9;s3qXiG
*/ `gCJ[
public void sort(int[] data) { `t9k!y!GV
int[] temp=new int[data.length]; g[O
mergeSort(data,temp,0,data.length-1); a*}>yad
} 4o";p}[b
*:+ZEFMq
private void mergeSort(int[] data, int[] temp, int l, int r) { K}
T=j+
int i, j, k; KSS]% 66Y
int mid = (l + r) / 2; R-<8j`[0
if (l == r) ZI4dD.B
return; $!$If(
7
if ((mid - l) >= THRESHOLD) o7Z8O,;
mergeSort(data, temp, l, mid); 2yFT` 5+H4
else _E8Cvaob
insertSort(data, l, mid - l + 1); :.=j)ljTx
if ((r - mid) > THRESHOLD) eU`O=uE
mergeSort(data, temp, mid + 1, r); @(*A<2;N
else 3P>1-=
insertSort(data, mid + 1, r - mid); Dk$<fMS,7c
@vib54G
for (i = l; i <= mid; i++) { R
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temp = data; (GGosXU-v
} (~bx %
for (j = 1; j <= r - mid; j++) { zN;P_@U
temp[r - j + 1] = data[j + mid]; !;vv-v,LQ
} 3 G<4rH]
int a = temp[l]; qQ3pe:n?
int b = temp[r]; 2"shB(:z>
for (i = l, j = r, k = l; k <= r; k++) { QBi]gT@&g
if (a < b) { Q}l~n)=
data[k] = temp[i++]; lup2>"?*
a = temp; 5}_=q;sZ
} else { tux0}|[^'
data[k] = temp[j--]; T%FW|jKw
b = temp[j]; Z]tQmV8e
} 79}jK"Gc
} MwQ4&z#wh
} O^6anUV0
D@.qdRc3
/** 5}w
* @param data -I6t ^$HA
* @param l Og@{6>
* @param i $`%Om WW{
*/ NOkgG0Z
private void insertSort(int[] data, int start, int len) { XjP;O,x
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); imzPVGCD{
} u)r:0;5
} SsZSR.tD
} z$~F9Es9
} I
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堆排序: '|yCDBu
@- xvdntx
package org.rut.util.algorithm.support; AOKC1iD%Y
FIVC~LDd
import org.rut.util.algorithm.SortUtil; k.c.7%|~;
1ZRkVHiz0
/** H[OgnnM
* @author treeroot Z
zp"CK 5
* @since 2006-2-2 Px*<-t|R-
* @version 1.0 djw\%00
*/ goF87^M
public class HeapSort implements SortUtil.Sort{ [eOv fD
v4'kV:;&
/* (non-Javadoc) uPYH3<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) < FO=PM
*/ u,d5/`E
public void sort(int[] data) { )u=W?5%=}
MaxHeap h=new MaxHeap(); y5O &9Ckw
h.init(data); 79d(UG'O
for(int i=0;i h.remove(); XpE847!soL
System.arraycopy(h.queue,1,data,0,data.length); Suo$wZ7J
} }P{Wk7#Jq
[Y@>,B!V
private static class MaxHeap{ H|wP8uQC
]{\M,txo8
void init(int[] data){ 1(:!6PY
this.queue=new int[data.length+1]; <;~u@^>
for(int i=0;i queue[++size]=data; rcMf1\
fixUp(size); y@LiUe5
} es x/{j;<u
} xh9$ZavB*
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private int size=0; m_Q&zp["
_!,
J iOI
private int[] queue; q-_!&kDK"
^->S7[N?
public int get() { "&4r!2A
return queue[1]; #)]t4wa_W
} ey4.Hj#T
NIbK3`1
public void remove() { w7Y@wa!
SortUtil.swap(queue,1,size--); 02*qf:kTnA
fixDown(1); 'U`;4AN
} w=rD8@
file://fixdown u-4@[*^T$
private void fixDown(int k) { DC-d@N+
int j; CAs:>s
'8
while ((j = k << 1) <= size) { a\}MJ5]
if (j < size %26amp;%26amp; queue[j] j++; iQ2j ejd3(
if (queue[k]>queue[j]) file://不用交换 S
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break; %Pt){9b
SortUtil.swap(queue,j,k); /}L2LMIm
k = j; &TA{US3~
} ]Zc|<f;
} -rm[.
private void fixUp(int k) { bGgpPV
while (k > 1) { e3 :L]4t
int j = k >> 1; o,*D8[
if (queue[j]>queue[k]) uZ-ZZE C
break;
<9yh:1"X
SortUtil.swap(queue,j,k); dpNERc5
k = j; p@4GI[ 4
} 0NC70+4L
} 7dACbqba
)=29Hm"
} rZaO^}u]
Z
f\~Cl
} fC*cqc~{@
-,p=;t#(
SortUtil: =D Q:0w
p&]V!O
package org.rut.util.algorithm; 1hGj?L0m.
X<[ qX*
import org.rut.util.algorithm.support.BubbleSort; |llJ%JhF
import org.rut.util.algorithm.support.HeapSort; _(kaa WJ
import org.rut.util.algorithm.support.ImprovedMergeSort; 0.n[_?<(
import org.rut.util.algorithm.support.ImprovedQuickSort; W [K.|8ho
import org.rut.util.algorithm.support.InsertSort; Xw!\,"{s
import org.rut.util.algorithm.support.MergeSort; %%uE^nX>
import org.rut.util.algorithm.support.QuickSort; 1d]F$>
import org.rut.util.algorithm.support.SelectionSort; NzP71t+
import org.rut.util.algorithm.support.ShellSort; tS]
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/** <]LljTm`i
* @author treeroot $Emu*'
* @since 2006-2-2 N~mr@rXC
* @version 1.0 FC,=g`Q!
*/ f6`GU$H
public class SortUtil { kv3Dn&<rJ
public final static int INSERT = 1; V<H9KA
public final static int BUBBLE = 2; Op?"G
public final static int SELECTION = 3; <L#d<lx
public final static int SHELL = 4; }>u `8'2v
public final static int QUICK = 5; H%>4z3n
public final static int IMPROVED_QUICK = 6; u%)gnj_
public final static int MERGE = 7; p.=9[`
public final static int IMPROVED_MERGE = 8; 'Uf?-t*LT@
public final static int HEAP = 9; yivu|q
&.*UVc2+Y
public static void sort(int[] data) { 4.jRTL5-oj
sort(data, IMPROVED_QUICK); /]xa}{^B
} 9 =;mY
private static String[] name={ 4#0 3x:/<\
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =ZIT!B?4
}; f=R+]XPzz
gaY&2
private static Sort[] impl=new Sort[]{ i!?gga
new InsertSort(), `9J9[!+!`
new BubbleSort(), _2hLc\#
new SelectionSort(), 8aP/vToa
new ShellSort(), mSxn7LG
new QuickSort(), HN{c)DIm]
new ImprovedQuickSort(), ~dRstH7u
new MergeSort(), cA
q3Gh
new ImprovedMergeSort(), 0^-1d2Z~
new HeapSort() WxGD*%
}; hb5K"9Y
;J 5z
public static String toString(int algorithm){ x^f)I|t
return name[algorithm-1]; #lP8/-s^
} ;X,u
"[|b,fxR
public static void sort(int[] data, int algorithm) { e}e8WR=B
impl[algorithm-1].sort(data); ns8s2kYcm
} x 6`!
"+"=iwEAz
public static interface Sort { +&`W\?.~
public void sort(int[] data); ilL0=[2
} !rM~
1jl!VU6
public static void swap(int[] data, int i, int j) { E6A"Xo
int temp = data; '3( ^Zv
data = data[j]; r<e%;S
data[j] = temp; RU:Rt'
} Y$r78h=4
} WVy'f|3;