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。 *8z"^7?^=
插入排序: P+[QI
U
TqIAWbb&
package org.rut.util.algorithm.support; "gFxfWIA
s(Z(e %
import org.rut.util.algorithm.SortUtil; hT?6sWa
/** a
"R7JjH
* @author treeroot z)}3**3'y
* @since 2006-2-2 j7K5SS_]
* @version 1.0 k/% #>
*/ 59V#FWe-
public class InsertSort implements SortUtil.Sort{ BbFa=H.
Hal7
MP
/* (non-Javadoc) }K2
/&kZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "[k1D_PZ
*/ b)N[[sOt
public void sort(int[] data) { xpF](>LC(
int temp; x
Sv-;!y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <>%,}j
9
} M(yH%i^A
} KacR?Al
}
Do|]eD
t{!/#eQC
} )IQ*
VM7 !0
冒泡排序: $H'8
#:[d_
WP}ixcq#
package org.rut.util.algorithm.support; C@1CanL@3
Bp
:~bHf
import org.rut.util.algorithm.SortUtil; m#JI!_~!
g6WPPpqus
/** ny)]GvxI
* @author treeroot WE0}$P:
* @since 2006-2-2 ?]^zD k@~
* @version 1.0 @<2d8ed
*/ 98GlhogWt
public class BubbleSort implements SortUtil.Sort{ 3?Lgtkb8
*.oKI@
/* (non-Javadoc) W;4Lkk$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {;*}WPYb
*/ ]bm=LA
public void sort(int[] data) { "f4<B-9<$
int temp; 5y]io
Jc9-
for(int i=0;i for(int j=data.length-1;j>i;j--){ >-M ]:=L
if(data[j] SortUtil.swap(data,j,j-1); #b'N}2'p#V
} ^5>s7SGB"
} $_sYfU9
} C}q>YRubZ
} .jA\f:u#
ld.7`)
} joqWh!kv7U
pE2QnNr'
选择排序: D?^Y`G$.
4jQ'+ 2it
package org.rut.util.algorithm.support; b^x07lO
Y&K <{\vE
import org.rut.util.algorithm.SortUtil; `z9J`r=I
#;]2=@
/** .oEbEs
* @author treeroot iRNLKi
* @since 2006-2-2 Ry?4h\UX5
* @version 1.0 ?Nf
5w
*/ {pWBwf>R C
public class SelectionSort implements SortUtil.Sort { xST4}Mb^f
>^=gDJ\a
/* zPR8f-U vw
* (non-Javadoc) %m eLW&
* ,X68xk.'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eCWPhB6l
*/ e`iEy=W
public void sort(int[] data) { : lgi>^
int temp; IxOc':/jY
for (int i = 0; i < data.length; i++) { )1lu=gc
int lowIndex = i; *nRNg.i3D
for (int j = data.length - 1; j > i; j--) { s5&=Bsv
if (data[j] < data[lowIndex]) { (Sv>NQp
lowIndex = j; v*z(@<Y
} {:bN/zV#
} 0}]SUe^
SortUtil.swap(data,i,lowIndex);
uFG<UF
} gzf-)J
} e"k/d<
OX\$ nQ\o
} _fn1)
l+[czb~
Shell排序: vN65T$g7
L%t@,O#,
package org.rut.util.algorithm.support; /:Lu_)5
U%>'"
import org.rut.util.algorithm.SortUtil; #H~_K}Ks
\S ."?!U
/** booRrTS
* @author treeroot O)]v;9oER
* @since 2006-2-2 Xgat-cy'DA
* @version 1.0 [/|zH'j:
*/ =sgdkAYwP
public class ShellSort implements SortUtil.Sort{ 2'|8Q\,:4Z
QA?oJ_}y
/* (non-Javadoc) [=uIb._Wv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eKG2*CV
*/ /Vww?9U;
public void sort(int[] data) { y9 L14
for(int i=data.length/2;i>2;i/=2){
%w
) +V
for(int j=0;j insertSort(data,j,i); O=}g4c
} XRtD< jlA"
} 'wQv3;
insertSort(data,0,1); Fky?\ec
} T%IK/"N|+
"& 25D
/** 2S~R !
* @param data ZVih =Y-w
* @param j !<<AzLVL
* @param i Q.Aa{d9e
*/ Kz?#C
private void insertSort(int[] data, int start, int inc) { s{}]D{bc
int temp; @Jn!0Y1_3
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7TX2&kMoc
} xZ .!d.rn
} Bp?
} &7>zURv
56}X/u
} h8{(KRa 6
33Az$GXFsq
快速排序: 2C=Q8ayvX
@'6"7g
package org.rut.util.algorithm.support; /=: j9FF
C! 9}
import org.rut.util.algorithm.SortUtil; =9wy/c$
r^fe4b
/** %, P>%'0
* @author treeroot 0~Gle:
* @since 2006-2-2 Fhf<T`
* @version 1.0 EGVM)ur
*/ mtAE
public class QuickSort implements SortUtil.Sort{ ?C-Towo=i
78 f$6J q
/* (non-Javadoc) kz}R[7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U7h(`b
*/ B1!kn}KlL{
public void sort(int[] data) { x;s0j"`Jb
quickSort(data,0,data.length-1); lLhL`C!
} QzvHm1,@
private void quickSort(int[] data,int i,int j){ #xh_
int pivotIndex=(i+j)/2; q5DEw&UZJ
file://swap H`9Uf)
SortUtil.swap(data,pivotIndex,j); ~f\G68c
&@FhR#pUQ
int k=partition(data,i-1,j,data[j]); Kn`M4O
SortUtil.swap(data,k,j); h^UKT`9vt
if((k-i)>1) quickSort(data,i,k-1); #W>QY Tp
if((j-k)>1) quickSort(data,k+1,j); cVnJ^*Z
/] ^#b
} 8^/I>0EZ
/** sgUud_r)4
* @param data WJH\~<{mP
* @param i !]yO^Ob.E
* @param j KngTc(^_D
* @return zAzP,1$?
*/ mHc>"^R
private int partition(int[] data, int l, int r,int pivot) { )kXhtjOl|
do{ dt@P>rel
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2Os1C}m
SortUtil.swap(data,l,r); Qn@Pd* DR
} 'a6<ixgo0
while(l SortUtil.swap(data,l,r); %EbPI)yY3
return l; ~^jq(:d)
} Mj#-j/{x{5
`l;n:]+
} 1\*\?\T>_
T;TA7{B
改进后的快速排序: /P|fB]p
Fb`a~c~s
package org.rut.util.algorithm.support; <7SpEVQ
t_^X$pL
import org.rut.util.algorithm.SortUtil; Fb22p6r
Hmt^h(*/2
/** `{k"8#4:qA
* @author treeroot 1RcSTg
* @since 2006-2-2 U1_@F$mq<
* @version 1.0 P262Q&.}d
*/ H,fZ!8(A_)
public class ImprovedQuickSort implements SortUtil.Sort { )L{ghy
}/tf>?c
private static int MAX_STACK_SIZE=4096; #'D"
'B
private static int THRESHOLD=10; eV:9y
/* (non-Javadoc) C?v[Z]t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZYU=\
*/ `*", <
public void sort(int[] data) { 6tHO!`}1
int[] stack=new int[MAX_STACK_SIZE]; M5nWVK7c
B~]5$-
int top=-1; Qd}m`YW-f$
int pivot; )a9 ]US^
int pivotIndex,l,r; >(uZtYM\j
d@`M
CchCB
stack[++top]=0; JWvjWY2+P
stack[++top]=data.length-1; x3jb%`o#!
%VYAd)gC
while(top>0){ x-OA([;/
int j=stack[top--]; f=C ,e/sw
int i=stack[top--]; eAv4FA4g
IW 21T
pivotIndex=(i+j)/2; U*Ge<(v$
pivot=data[pivotIndex]; m8'C_U^89
];'v8)Y
SortUtil.swap(data,pivotIndex,j); \%PaceH
1XM^8 .;
file://partition ku$$ 1xq
l=i-1; S}APQ
r=j; JD@J[YY5R
do{ 2
rw%H
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1)
ta
SortUtil.swap(data,l,r); BdlVabQyKW
} 7K)6^r^
while(l SortUtil.swap(data,l,r); mxb(<9O
SortUtil.swap(data,l,j); g?-lk5
W;bu2ym&Q
if((l-i)>THRESHOLD){ 3)-/`iy#
stack[++top]=i; j83p)ido
stack[++top]=l-1; I}Nd$P)>
} _ZY)M
if((j-l)>THRESHOLD){ hX`}Q4(k
stack[++top]=l+1; C<KrMRWh^
stack[++top]=j; (Yp+bS(PU*
} %K(<$!
pw7[y^[Qg
} @u==x*{|
file://new InsertSort().sort(data); 'F>'(XWWQ
insertSort(data);
NR;1z
} ml \4xp,
/** G}&Sle]
* @param data tOfg?)h{dc
*/ ]-ZEWt6lsc
private void insertSort(int[] data) { me[DmiM,
int temp; ylt`*|$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /pF`8$
} :0s]U_h
} ': N51kC
} FQ
g~l4WX
O_Oj|'bBC
} Cvn#=6V3
()~pY!)1/
归并排序: 7S?4XyU/o
\[Z?&
package org.rut.util.algorithm.support; .e_cgad :
]\7]%(
import org.rut.util.algorithm.SortUtil; 035rPT7-2-
v|U(+O
/** ZDbc
* @author treeroot rn<PR*
* @since 2006-2-2 #1>X58I^
* @version 1.0 @)Ofi j
*/ 76u&EG%
public class MergeSort implements SortUtil.Sort{ sQMFpIrr
]Dw]p!@
/* (non-Javadoc) 6/rFHY2q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [B+W%g(c-
*/ mEG#>Gg$
public void sort(int[] data) { zbq@pj)Qu
int[] temp=new int[data.length]; 6R=W}q4
mergeSort(data,temp,0,data.length-1); Q+YRf3$
} 7b<yVP;{
ULQMG'P^D
private void mergeSort(int[] data,int[] temp,int l,int r){ hWX% 66
int mid=(l+r)/2; \Gc+WpS(
if(l==r) return ; Z)jw|T'X
mergeSort(data,temp,l,mid); {mAU3x
mergeSort(data,temp,mid+1,r); HuOIFv
for(int i=l;i<=r;i++){ 66fO7OJs
temp=data; ~8lwe*lNV
} r/SG 4
int i1=l; _-EyT
int i2=mid+1; 3YVi"
k?2
for(int cur=l;cur<=r;cur++){ -|E!e.^7:
if(i1==mid+1) ;VWAf;U;B
data[cur]=temp[i2++]; $sEy%-
else if(i2>r) 'Fmvu
data[cur]=temp[i1++]; o<N nV
else if(temp[i1] data[cur]=temp[i1++]; EVoEszR
else TYy.jFT-
data[cur]=temp[i2++]; V{JAB]?^
} 6L)%T02C
} -;'1^
R)c'#St
} gvLf|+m
nw-I|PVTNa
改进后的归并排序: ]C) 4
?mwD*LN3o
package org.rut.util.algorithm.support; )b:7-}d
Zl*X?5u
import org.rut.util.algorithm.SortUtil; B[KJR?>
aoXb2 2]{
/** B'fb^n<
* @author treeroot l,kUhZ@W
* @since 2006-2-2 #FNcF>3>
* @version 1.0 lyGhdgWc
*/ JYTP
2
public class ImprovedMergeSort implements SortUtil.Sort { Y./2Ely
2sJ(awN>
private static final int THRESHOLD = 10; 92 [;Y
3\B>lKhQ
/* 2RX!V@z.G
* (non-Javadoc) sQ
fFu
* L31HGH2l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8?%-'z.
*/ 7x@A%2J
public void sort(int[] data) {
YxP&7oq
int[] temp=new int[data.length]; 7(5
4/
mergeSort(data,temp,0,data.length-1); >"C,@cN}B
} 62Z#YQ}x
jrS[f
private void mergeSort(int[] data, int[] temp, int l, int r) { 1&-
</G#
int i, j, k; )'~6HO8Z
int mid = (l + r) / 2; ={z*akn,
if (l == r) RRI"d~~F6
return; -:na:Vsi
if ((mid - l) >= THRESHOLD) PbmDNKEh{
mergeSort(data, temp, l, mid); S;)w.
else 6Aku1h
insertSort(data, l, mid - l + 1); tQjLOv+?=
if ((r - mid) > THRESHOLD) @~%r5pz6
mergeSort(data, temp, mid + 1, r); kOed ]>H
else "T|PS6R~
insertSort(data, mid + 1, r - mid); ^pYxKU_O
4y+< dw
for (i = l; i <= mid; i++) { AT%u%cE-
temp = data; o}$EG
} 2* 2wY =
for (j = 1; j <= r - mid; j++) { }yz (xH
temp[r - j + 1] = data[j + mid]; Jl&-,Vjb
} %oO4|JkJX
int a = temp[l]; 7:2WgLo
int b = temp[r]; !Ze5)g%H
for (i = l, j = r, k = l; k <= r; k++) { 4 XAQVq5
if (a < b) { sashzVwJ-=
data[k] = temp[i++]; NB8/g0:=n&
a = temp; (,8$V\
} else { [Lzw#XE
data[k] = temp[j--]; MerFZd 1
b = temp[j]; Gy6l<:;
} } x2DT8u
} fc
|GArL#}
} @CT;g\4
FGoy8+nB1M
/** ;9c<K
* @param data eb =D/
* @param l #':fkIYe'
* @param i {62n7'U{
*/ QC9eUYe
private void insertSort(int[] data, int start, int len) { fP(d8xTx2y
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); m+Rv+_R
} K[!&b0O
} [_Qa9e
} ;oc&Hb
} IWY;="
=Xqc]5[i
堆排序: IyWI5Q"t
tV{4"Ij9[
package org.rut.util.algorithm.support; Y4v|ko`l%
OR;uqV@
import org.rut.util.algorithm.SortUtil; FSA1gAW6g
'7iSp=
/** )3>hhuaa
* @author treeroot {qN 5MsY
* @since 2006-2-2 Ro9tZ'N!S
* @version 1.0 id1s3b;
*/ E( Z8
public class HeapSort implements SortUtil.Sort{ mD^jd+
w .?:SD
/* (non-Javadoc) WjlZ6g2i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xo7Kn+ Kl
*/ a+%6B_|\
public void sort(int[] data) { :(M(>4t
MaxHeap h=new MaxHeap(); "C I=`=
h.init(data); !0vG|C;'
for(int i=0;i h.remove(); uA#P'?
System.arraycopy(h.queue,1,data,0,data.length); T-U}QM_e
} 'LO^<
:gep:4&u
private static class MaxHeap{ 2fWTY0
`wDl<[V
void init(int[] data){ ,uSQNre\j
this.queue=new int[data.length+1]; f PM8f
for(int i=0;i queue[++size]=data; *U
P@9D
fixUp(size); EV*IoE$W]=
} d%V*|0c)
} @n{JM7ctJ
[E/\#4b
private int size=0; V;,{}
qLB)XnQ
private int[] queue; a
0GpfW$t
AMyIAZnYq)
public int get() { B>0].CK`
return queue[1]; gk0( ANx
} fmb} 2h
"HDcmIXg&
public void remove() { mqSQL}vR
SortUtil.swap(queue,1,size--); ^h"`}[+
fixDown(1); ?'KL11@R
} @NNq z
file://fixdown 4UW_Do
private void fixDown(int k) { #0y)U;dA+w
int j; \cUC9/
b
while ((j = k << 1) <= size) { +O*/"]h
if (j < size %26amp;%26amp; queue[j] j++;
+7=K/[9p
if (queue[k]>queue[j]) file://不用交换 z<##g
break; mjKS{
SortUtil.swap(queue,j,k); Yd#/1!A7u
k = j; B(n{e53 9f
} hHT_V2*
} z$?~Y(EY
private void fixUp(int k) { +h r@#n4A
while (k > 1) { 4Za7^c.
int j = k >> 1; Ljx(\Cm
if (queue[j]>queue[k]) &3TEfvz
break; X ><?F|#7T
SortUtil.swap(queue,j,k); $D|e>U
k = j; \l]DQaOEe
} tavpq.0O
} i03w1pSH,
rU2%dkTa
} K"4>DaK2P
ck.w
5|$
} D0%Ug>
(K)] qNH
SortUtil: Te<}*qvD
L>SjllY
package org.rut.util.algorithm; :n.f_v}6
j]aoR
import org.rut.util.algorithm.support.BubbleSort; :uK?4
import org.rut.util.algorithm.support.HeapSort; ecCr6)
import org.rut.util.algorithm.support.ImprovedMergeSort; T`;%TO*Y
import org.rut.util.algorithm.support.ImprovedQuickSort; {O7X`'[
import org.rut.util.algorithm.support.InsertSort; %\H|B0
import org.rut.util.algorithm.support.MergeSort; `m!j$,c.
import org.rut.util.algorithm.support.QuickSort; _U
|>b>
import org.rut.util.algorithm.support.SelectionSort; CkdP #}f
import org.rut.util.algorithm.support.ShellSort; ^7 &5
z&o
Ipq"E
/** ~s]iy9i
* @author treeroot 8p@Piy{p
* @since 2006-2-2 [g:$K5\64
* @version 1.0 /M3Y~l$
*/ jO1r)hw N>
public class SortUtil { (tZrw5@
public final static int INSERT = 1; /.o^R6
public final static int BUBBLE = 2; .2v_H5<
public final static int SELECTION = 3; .MJofE;Jn
public final static int SHELL = 4; ^w c"&;=c|
public final static int QUICK = 5; EuyXgK>g
public final static int IMPROVED_QUICK = 6; /q5v"iX]T
public final static int MERGE = 7; 37|&?||
public final static int IMPROVED_MERGE = 8; ak |WW]R
public final static int HEAP = 9; z2QP)150
g'V>_u#(
public static void sort(int[] data) { -1UD0(
sort(data, IMPROVED_QUICK); D-4f >
} 7zSLAHW
private static String[] name={ NT+?#0I
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z^IPZF
}; #>mr[
Qg[/%$x.
private static Sort[] impl=new Sort[]{ ;[u%_
new InsertSort(), obNqsyc77R
new BubbleSort(), p|&Yku=
new SelectionSort(), /5:bvg+
new ShellSort(), 7[5.> h
new QuickSort(), }7
c[Q($K
new ImprovedQuickSort(), \V*xWS
new MergeSort(),
.5y+fL
new ImprovedMergeSort(), 1r]IogI
new HeapSort() ;bLEL"x%
}; 8_tK4PwP
HP3lz,d
public static String toString(int algorithm){ _q{c##Kf
return name[algorithm-1]; (KF=On;=Y
} Ooq! 0g
v4.#;F.\m
public static void sort(int[] data, int algorithm) { oWC@w
impl[algorithm-1].sort(data); D(H>R&b!
} &qr;IL7'
TG+VEL |T
public static interface Sort { Ndcg/d
public void sort(int[] data); :X]itTrGs
} kMt 8/ E`
< VSA
public static void swap(int[] data, int i, int j) { jhg;%+KB
int temp = data; ?)1{)Erf8x
data = data[j]; GP:77)b5
data[j] = temp; R5 9S@MsuD
} UM6(s@$
} s8#X3Rp