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。 ammlUWl
插入排序: 0N>NX?r
BJC$KmGk
package org.rut.util.algorithm.support; |mvY=t
%
Is57)(^.-
import org.rut.util.algorithm.SortUtil; W<|
M0S{
/**
]wb^5H
* @author treeroot e!k1GTH^
* @since 2006-2-2 Uq/FH@E=
* @version 1.0 AtU%S9
*/ :+#$=4
public class InsertSort implements SortUtil.Sort{ q(xr5iuP_
AUjZYp
/* (non-Javadoc) a4aM.o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wg{ 9X#|
*/ ]t0]fb[J
public void sort(int[] data) { W cOyOv
int temp; *Cf5D6=Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {02$pO
} c[VVCN8dA
} ;\a?xtIy
} R `K1L!`3
cH>@ZFTF
} [>--U)/
e7tp4M9!%
冒泡排序: [QUaC3l)
k6eh$*!
package org.rut.util.algorithm.support; <OgwA$abl%
dmA#v:$1
import org.rut.util.algorithm.SortUtil; PzF>yG[
jEh Px
/** CZZwBt$P
* @author treeroot 28 Q\{Z.
* @since 2006-2-2 vo(riHH
* @version 1.0 p.@kv
*/ 6sjd:~J:
public class BubbleSort implements SortUtil.Sort{ cvOCBg38BH
'_ZiZ4O
/* (non-Javadoc) T8^`<gr.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ob!NC&
*/ &6="r}
public void sort(int[] data) { da'1H
int temp; hufpk y[&8
for(int i=0;i for(int j=data.length-1;j>i;j--){ ICdfak
if(data[j] SortUtil.swap(data,j,j-1); pTeN[Yu?
} 2P,%}Ms
} 2`d KnaF|
} C*X=nezq
} Q&5s,)w-
!#y_vz9
} +-X
68`
,{6Vf|?
选择排序: )x5t']w`K
4yK{(!&i+
package org.rut.util.algorithm.support; +L0Jje>Az
f/PqkHF
import org.rut.util.algorithm.SortUtil; B)/L[ )S
@bRKJPU9)
/** e@h(Zwp
* @author treeroot h-.xx4D
* @since 2006-2-2
^t}1$H
* @version 1.0 9QP- ~V{$
*/ :_8Nf1B+T
public class SelectionSort implements SortUtil.Sort { ~`97?6*Ra
-kk0zg
&|i
/* Talmc|h
* (non-Javadoc) {k}$L|w
* *3iEO>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +-r ~-b s
*/ ctOBV
public void sort(int[] data) { J5!-<oJ/
int temp; t p<v
for (int i = 0; i < data.length; i++) { 6%^A6U
int lowIndex = i; WhT5NE9t
for (int j = data.length - 1; j > i; j--) { EvYe1Y-
if (data[j] < data[lowIndex]) { CL3 b+r
lowIndex = j; $;pHv<
} z[Ah9tM%
} 8-B6D~i
SortUtil.swap(data,i,lowIndex); =f?vpKq40
} *qZBq&7tb
} #HDP ha
0^3n#7m;K
} RNo~}#
8,@0~2fz#
Shell排序: u|"y&>!R-
lFtH;h,==v
package org.rut.util.algorithm.support; dI+Y1Vq
_]v@Dq VP
import org.rut.util.algorithm.SortUtil; @+{F\SD\
4_P6P
/**
"F=ta
* @author treeroot 0Ke2%+yqJ
* @since 2006-2-2 {TXfi'\
* @version 1.0 yUjkRT&h
*/ (u4'*[o\t
public class ShellSort implements SortUtil.Sort{ -}1TT@
MWv(/_b
/* (non-Javadoc) dY{qdQQ}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 =oUE$9
*/ 0qq>(K[
public void sort(int[] data) { ZaYUf
for(int i=data.length/2;i>2;i/=2){ 704_ehrlE
for(int j=0;j insertSort(data,j,i); k:F{U^!p|
} [sNvCE$\]
} @# =yC.s
insertSort(data,0,1); NTo[di\_
} <A(Bq'eQM
!k Heslvi
/** pAws{3(Q
* @param data 2w}l!'ue
* @param j 2>[xe
* @param i <naxpflom0
*/ iA<'i8$P
private void insertSort(int[] data, int start, int inc) { R=<%!
int temp; 4,08`5{
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =9h!K:,k
} 6 w'))Z
} klAvi%^jE
} T>pyYF1Q
U.WXh(`%
} /}/GK|tj
BNgm+1?L
快速排序: z=TOGP(
|- <72$j
package org.rut.util.algorithm.support; 0|<9eD\I=
F9"Xu-g
import org.rut.util.algorithm.SortUtil; Z~w2m6;s
Wecxx^vtv6
/** S5kD|kJ
* @author treeroot lMl'+ yy
* @since 2006-2-2 zGdYk-H3TH
* @version 1.0 /'/i?9:
*/ 4jc?9(y%
public class QuickSort implements SortUtil.Sort{ nu)YN1
*
5 B t~tt
/* (non-Javadoc) $<9u:.9xf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AhkDLm+
*/ yD Jy'Z_F{
public void sort(int[] data) { T^F83Py<
quickSort(data,0,data.length-1); S['cX ~
} ol K+|nR
private void quickSort(int[] data,int i,int j){ +|x{?%.O
int pivotIndex=(i+j)/2; G`;\"9t5h
file://swap m[z$y
SortUtil.swap(data,pivotIndex,j); (I`lv=R"j
`v-O 4Pk
int k=partition(data,i-1,j,data[j]); :`4F0
SortUtil.swap(data,k,j); a`8]TD
if((k-i)>1) quickSort(data,i,k-1); &Yo|Pj
if((j-k)>1) quickSort(data,k+1,j); FJ^\K+;
+f%"O?
} lMH~J8U3
/** *$5p,m6G
* @param data /+*N.D'`t,
* @param i r\cY R}v
* @param j 9Z }<H/q
* @return t(dVd%
*/ /OYa1,
private int partition(int[] data, int l, int r,int pivot) { E%(s=YhW
do{ OwEu S#-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); tJ7F.}\;C
SortUtil.swap(data,l,r); #.!#"8{0_
} UCXRF
while(l SortUtil.swap(data,l,r); xHqF_10S#
return l; fs:yx'mxV
} ?pcbso
hs5>Gx
} *dxm|F98
%%/8B
改进后的快速排序: 1Q!kk5jE
rB{w4
package org.rut.util.algorithm.support; &4+|{Zx0
7#W]Qj
import org.rut.util.algorithm.SortUtil; ZyDNtX%
}n
"5r(*^@
/** )t@9!V
* @author treeroot 7r50y>
* @since 2006-2-2 yj@k0TWT$
* @version 1.0 6)p8BUft
*/ S>>wf:\ c
public class ImprovedQuickSort implements SortUtil.Sort { 3HBh
3p5
+q;{%3C
private static int MAX_STACK_SIZE=4096; hv?T}E
private static int THRESHOLD=10; mE5{)<N:C
/* (non-Javadoc) iE}] E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) / Y od
*/ 6VC|]
|*
public void sort(int[] data) { 3y+~l
H:
int[] stack=new int[MAX_STACK_SIZE]; Ep;i],}
gL-kI*Ra
int top=-1; wP*3Hx;S
int pivot; o&&`_"18
int pivotIndex,l,r; Kc95yt
qH5nw}]
stack[++top]=0; Jfk#E^1
stack[++top]=data.length-1; NJ+$3n om
vy}_aD{B
while(top>0){ 4I$Y"|_e
int j=stack[top--]; jpO0dtn3=
int i=stack[top--]; KS<@;Tt
:V5 Co!/+
pivotIndex=(i+j)/2; BWQ`8
pivot=data[pivotIndex]; SMIDW}U2S
<F(S_w62
SortUtil.swap(data,pivotIndex,j); [qW%H,_
Ow*va\0
file://partition 5'eBeNxM
l=i-1; bhGRD{=
r=j; _/z_
X
do{ :IBP "
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \O4s0*gw
SortUtil.swap(data,l,r); ]hS<"=oj
} >zDQt7+g;
while(l SortUtil.swap(data,l,r); CuH4~6
SortUtil.swap(data,l,j); < K!r\^
$~G5s<r
if((l-i)>THRESHOLD){ Xz^k.4 Y{4
stack[++top]=i; iN.
GC^l
stack[++top]=l-1; qD4s?j-9
} ~?Vo d|>
if((j-l)>THRESHOLD){ n@ SUu7o
stack[++top]=l+1; %3~miP
stack[++top]=j; qR!ZtJ5j
} Wh..QVv
b@&uwS v
} ~] V62^0
file://new InsertSort().sort(data); }~|`h1JF
insertSort(data); Uz_p-J0
} =.;ib6M
/** Za1mI^ L1
* @param data xjiV9{w
*/ z/`+jIB
private void insertSort(int[] data) { l^ay*H
int temp; Jw@X5-(Cp
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R[v0T/
} 0RtZTCGO
} i+mU(/l2{
} |9%~z0
c5$DHT@N"
} (J %4}Dm
]
1pIIX}
归并排序: V\x'w*FP
2,q*8=?{6P
package org.rut.util.algorithm.support; oA[`|
ji
:0Jn`Ds4o
import org.rut.util.algorithm.SortUtil;
gk 6R#
X4S|JT
/** \Db;7wh
* @author treeroot AV2Jl"1)z
* @since 2006-2-2 $)"T9$>$
* @version 1.0 p@%Pdx
*/ $3l#eKZA
public class MergeSort implements SortUtil.Sort{ .z_nW1id
{Kr}RR*{X
/* (non-Javadoc) ~`&4?c3p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BHAFO E
*/ |(*btdqy3
public void sort(int[] data) { I+;e#v,%U
int[] temp=new int[data.length]; y>0 @.
mergeSort(data,temp,0,data.length-1); "lu^
} Bo8f52|
Z(tJd,
private void mergeSort(int[] data,int[] temp,int l,int r){ :*,!gf
int mid=(l+r)/2; ^|.T\
if(l==r) return ; zO\_^A|8H
mergeSort(data,temp,l,mid); fqbeO 9x
mergeSort(data,temp,mid+1,r); )cRHt:
for(int i=l;i<=r;i++){ 7F>]zrbK
temp=data; kVM*[<k
} ~&p]kmwXSX
int i1=l; q6$6:L,<
int i2=mid+1; T88$sD.2
'
for(int cur=l;cur<=r;cur++){ NpZ'pBl
if(i1==mid+1) 9ThsR&h3
data[cur]=temp[i2++]; QxE%C
else if(i2>r) ty~Sf-Pri
data[cur]=temp[i1++]; d!: /n
else if(temp[i1] data[cur]=temp[i1++]; w^&UMX}
else PSu]I?WF
data[cur]=temp[i2++]; ]kmAN65c
} *!y04'p`<
} c^1JSGv
OfBWf6b
} aC1 xt(
89D`!`Ah]
改进后的归并排序: 3{co.+
rwUhNth-Qh
package org.rut.util.algorithm.support; ^0>^5l'n
T+P{,,a/]
import org.rut.util.algorithm.SortUtil; 4`#%<G
hl**G4z9q
/** GYIQ[#'d7
* @author treeroot A@lM=
* @since 2006-2-2 jWxa
[>
* @version 1.0 7mi*#X}
*/ W%ix|R^2]
public class ImprovedMergeSort implements SortUtil.Sort { g~K-'Nw
bt=D<YZk
private static final int THRESHOLD = 10; 8M!9gvcaO
$<Gt^3e
/* EB+4]MsD
* (non-Javadoc) u"v$[8
* "[["naa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '!Va9m*w7
*/ B
&Z0ZWx
public void sort(int[] data) { =r]_$r%gR
int[] temp=new int[data.length]; !K*3bY`#
mergeSort(data,temp,0,data.length-1); F'{ T[MA
} #oEtLb@O
R6;229e
private void mergeSort(int[] data, int[] temp, int l, int r) { w\d1
int i, j, k; 6I=d0m.io
int mid = (l + r) / 2; gPKO-Fsd"
if (l == r) |Zn,|-iW
return; %iIr %P?
if ((mid - l) >= THRESHOLD) H/x9w[\+[
mergeSort(data, temp, l, mid); QrmGrRH
else lp$,`Uz`
insertSort(data, l, mid - l + 1); 6tVp%@
if ((r - mid) > THRESHOLD) e
jk?If 07
mergeSort(data, temp, mid + 1, r); 8[^b8^
else [C
7X#|
insertSort(data, mid + 1, r - mid); <MhODC")
ZyC[w7$I2
for (i = l; i <= mid; i++) { >/GYw"KK
temp = data; O&.gc p!
} tJd/uQJ
for (j = 1; j <= r - mid; j++) { ri"=)]
temp[r - j + 1] = data[j + mid]; x51p'bNy
} !_o1;GzK
int a = temp[l]; 2V9"{F?
int b = temp[r]; !h1|B7N
for (i = l, j = r, k = l; k <= r; k++) { =hh,yi
if (a < b) { @&G
%cW(
data[k] = temp[i++]; bsc b
a = temp; q}JP;p(#
} else { 9~f
RYA*
data[k] = temp[j--]; }236{)DuN
b = temp[j]; Pa\yp?({q
} G7-.d/8|^
} /WAOpf5
} `a7b,d
K^AIqL8
/** 8.`5"9Vh
* @param data 0R+<^6^l)
* @param l I%{D5.du
* @param i g ?%]()E
*/ EJ:2]!O
private void insertSort(int[] data, int start, int len) { czo*_q%
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /4*>.Nmb,f
} =cR=E{20
} 0F 4%Xz
} 1@]gBv<
} 5X-d,8{w
_
H0lAu]~R_W
堆排序: 7&|&y
SCu
d5LL(
"
package org.rut.util.algorithm.support; [DSzhi]
G"<} s
mB
import org.rut.util.algorithm.SortUtil; jA%R8hdr_
[QT
H ~
/** J]*?_>"#8
* @author treeroot ;ahI}}
* @since 2006-2-2 JHVesX
* @version 1.0 olDzmy(=W*
*/ 9qJ:h-?M
public class HeapSort implements SortUtil.Sort{ Qo["K}Ty
PsS8b
/* (non-Javadoc) zv\T ;_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l(tMo7iPa
*/ DoJ3zYEk
public void sort(int[] data) { XlxB%
MaxHeap h=new MaxHeap(); QfU{W@!h
h.init(data); Kv\uBMJNW
for(int i=0;i h.remove(); P<xCg
System.arraycopy(h.queue,1,data,0,data.length); ( v=Z$#l
} :?gk=JH:
Q;p%
VQ
private static class MaxHeap{ CM%;r5
"g;}B"rG
void init(int[] data){ K&vqk/JW1
this.queue=new int[data.length+1]; %LdFS~
for(int i=0;i queue[++size]=data; yD&UH_ 1g
fixUp(size); AUkePp78
} ,?!4P+ob
} G-T2b,J
[
q&k?$rn
private int size=0; 3)py|W%X$
qc^qCGy!z
private int[] queue; ATU] KL!{
!RdubM
public int get() { O:O
+Q!58
return queue[1]; u#34mg..
} lLeN`{?
5l(NX
public void remove() { :,dO7dJi
SortUtil.swap(queue,1,size--); ApAHa]Ccp
fixDown(1); (=i+{
3`|
} DKf:0E8
file://fixdown O>L
5
dP
private void fixDown(int k) { 9"k^:}8.
int j; =dI2j@}c
while ((j = k << 1) <= size) { 1|\/2
if (j < size %26amp;%26amp; queue[j] j++; M6b6lhg
if (queue[k]>queue[j]) file://不用交换 )eSD5hOI)
break; .3T#:Hl
SortUtil.swap(queue,j,k); tJY3k$YX
k = j; lMBXD?,,J
} _NJq%-,'
} .
!;K5U
private void fixUp(int k) { !"x&tF
while (k > 1) { 7j L.\O
int j = k >> 1; 7q _.@J
if (queue[j]>queue[k]) m:XMF)tW
break; ghqq%g
SortUtil.swap(queue,j,k); !|S{e^WhbU
k = j; 0V:PRq;v0
} &ffd#2f`@
} q--;5"=S
>NN&j#;x~
} r$Ck:Q}
<ekLL{/O'
} d>NM4n[h8
@5\ns-%
SortUtil: |\~!oN
U*6)/.J
package org.rut.util.algorithm; -gKo@I
mC(q8%/;
import org.rut.util.algorithm.support.BubbleSort; :CAbGs:56
import org.rut.util.algorithm.support.HeapSort; ep2#a#&'
import org.rut.util.algorithm.support.ImprovedMergeSort; t<2B3&o1
import org.rut.util.algorithm.support.ImprovedQuickSort; eE-@dU?
import org.rut.util.algorithm.support.InsertSort; A5> ,e|
import org.rut.util.algorithm.support.MergeSort; |cE 69UFB
import org.rut.util.algorithm.support.QuickSort; zcNv T
import org.rut.util.algorithm.support.SelectionSort; ta 66AEc9
import org.rut.util.algorithm.support.ShellSort; PxHHh{y%c
Os-sYaW
/** H|0GRjC
* @author treeroot AlRng&o~
* @since 2006-2-2 IvyBK]{|
* @version 1.0 `by\@xQ)
*/ 5b2_{6t
public class SortUtil { tk
<R|i
public final static int INSERT = 1; &qP&=( $
public final static int BUBBLE = 2; u;qBW
uO
public final static int SELECTION = 3; xui.63/
public final static int SHELL = 4; 0
))W [
public final static int QUICK = 5; )N4_SA
public final static int IMPROVED_QUICK = 6; #\]:lr{>?4
public final static int MERGE = 7; +5+?)8Ls
public final static int IMPROVED_MERGE = 8; n^AQ!wC
public final static int HEAP = 9; 2& l~8,
zLxO\R!d
public static void sort(int[] data) { "NamP\hj
sort(data, IMPROVED_QUICK); hkq[xgX
} ZsPT!l,
private static String[] name={ t:G67^<3
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" C"P40VQoo
}; 5xawa:K
(ft8,^=4
private static Sort[] impl=new Sort[]{ >wpC45n)9N
new InsertSort(), f|f9[h'
new BubbleSort(), ,NQucp
new SelectionSort(), D|}%(N@sl
new ShellSort(), Ol~jq;75
new QuickSort(), U
h'1f7%
new ImprovedQuickSort(), Q~A25Jf.
new MergeSort(), 2=TQU33#
new ImprovedMergeSort(), Uva
b*9vX
new HeapSort() bI,gNVN=
}; B9RB/vHH
-&u2C}4s
public static String toString(int algorithm){ &K_"5.7-56
return name[algorithm-1]; y[s* %yP3l
} 8)D5loS
;oQ*gd
public static void sort(int[] data, int algorithm) { <d GGH
impl[algorithm-1].sort(data); 1h.N
&;vy
} q.l"Y#d
Fx.hti
public static interface Sort { +d0&(b
public void sort(int[] data); \WnI&nu
} J<<0U;
<=
xmJx-V
public static void swap(int[] data, int i, int j) { +|N!(H
int temp = data; ,[lS)`G
data = data[j]; ix<sorR H
data[j] = temp; k#I4^
} hDp
-,ag{
} JwNG`MGc