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。 zm4e+v-
插入排序: 9WHarv2 @
+eop4 |Z
package org.rut.util.algorithm.support; y+izC+
A2Iqn5
import org.rut.util.algorithm.SortUtil; g91xUG
/** ZS@R ?
* @author treeroot I;9DG8C&v*
* @since 2006-2-2 JD AX^]
* @version 1.0 KqNsCT+j
*/ C\|HN=2eh
public class InsertSort implements SortUtil.Sort{ 2d<`dQY{l3
Z'm( M[2K
/* (non-Javadoc) |>-0q~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zOJzQZ~
*/ W#wC
public void sort(int[] data) { ZB5NTNf>
int temp; u!b0<E
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3ZvQUH/{W
} v{8r46Y~Z)
} /)rv Ndn
} #jg3Ku;Y
-cUw}
} t 1G2A`
#rp)Gc
冒泡排序: 2#'"<n,G
y@Td]6|f
package org.rut.util.algorithm.support; ;@n/gU
qVds
2
import org.rut.util.algorithm.SortUtil; )Rj?\ZUR
cO-^#di
/** 0_t9;;y :
* @author treeroot aDE}'d1qo
* @since 2006-2-2 *P`k |-
* @version 1.0 SW Hi iF@
*/ :;Npk9P(N
public class BubbleSort implements SortUtil.Sort{ nrM-\'
'ztY>KV j
/* (non-Javadoc) yPH5/5;,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }q?q)cG
*/ !{ORFd
public void sort(int[] data) { Ihl]"76q/
int temp; 4=|oOIhgb
for(int i=0;i for(int j=data.length-1;j>i;j--){ yW i?2
if(data[j] SortUtil.swap(data,j,j-1); $tK/3
} /8P7L'Rb
} msw=x0{n5
} X"T)X#:)
} qf%p#+:B3
VZ2CWE)t
} / 6DW+!
%y)LBSxf
选择排序: 1\5po^Oioy
ZPHatC
package org.rut.util.algorithm.support; y"zZ9HQM
G52z5-=v
import org.rut.util.algorithm.SortUtil; ]YB,K)WQ
~sCdvBA
/** :}o{<U
* @author treeroot *bi;mQ
* @since 2006-2-2 (T",6 xBSG
* @version 1.0 ZrWA,~;
*/ IN"6=2:
public class SelectionSort implements SortUtil.Sort { |(9l_e|
Jz-RMX=
/* &3P"l.j
* (non-Javadoc) hP
jL
* ~e+pa|lO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EsLtC5]
*/ VJtRL')
public void sort(int[] data) { <"LA70Hkk
int temp; B>
zQ[e@t
for (int i = 0; i < data.length; i++) { kO,vHg$
int lowIndex = i; <ol?9tm
for (int j = data.length - 1; j > i; j--) { +^%0/0e
if (data[j] < data[lowIndex]) { @$?*UI6y
lowIndex = j; F4g3l
} H8!lSRq
} 0|(6q=QK
SortUtil.swap(data,i,lowIndex); _No<fz8
} 0Rh*SoYrC
} z@xkE ,j>
u"kB`||(
} s18A
Ia>~ph#]{`
Shell排序: :) T#.(mR
wgZ6|)!0
package org.rut.util.algorithm.support; IZZ
$p{
kyUG+M
import org.rut.util.algorithm.SortUtil; 7nbaR~ZV
e:6mz\J
/** lq)[
* @author treeroot cUU"*bA#
* @since 2006-2-2 {JW_ZJx
* @version 1.0 9NqZ&S
*/ 4aG}ex-s|
public class ShellSort implements SortUtil.Sort{ w-``kID
Oi~.z@@
/* (non-Javadoc) !Ee&e~"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D*)"?LG
*/ 6,skF^
public void sort(int[] data) { QQUZneIDp
for(int i=data.length/2;i>2;i/=2){ 2%j"E{J&
for(int j=0;j insertSort(data,j,i); h ?+vH{}j
} ,uS}wJAX
} !]#;'
insertSort(data,0,1); E1|:t$>Ld
} r5uX?^mJ0
. Kk'N
/** DcZ,a E]
* @param data UFr5'T
* @param j vt}A6mF
* @param i V"|j Dnn5
*/ v$R7"
private void insertSort(int[] data, int start, int inc) { x c$jG?83#
int temp; wmit>69S
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m?`$NJST
} r7*'s
} _Ns_$_
} 6$p6dmV|
M}9PicI?7
} Rhh.fV3
=OooTZb:x-
快速排序: :"Kr-Hm`
2;YL+v2
package org.rut.util.algorithm.support; E)(Rhvij
qLm
g18
import org.rut.util.algorithm.SortUtil; wmFS+F4`2
FJ O-p
/** Iz I
hC
* @author treeroot r1|;V~a$~
* @since 2006-2-2 Ert`
]s~
* @version 1.0 l~GcD
*/ i8`0-
public class QuickSort implements SortUtil.Sort{ 'V:ah38
5=P*<Dnj
/* (non-Javadoc) (rjv3=9\3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /1LQx>1d
*/ UQ+!P<>w
public void sort(int[] data) { zT jk^
quickSort(data,0,data.length-1); o$,e#q)8
} GhY MO6Q4
private void quickSort(int[] data,int i,int j){ l%MIna/Tp
int pivotIndex=(i+j)/2; 0%]F&|
file://swap Z`kI6
SortUtil.swap(data,pivotIndex,j); }e&Z"H |
gJuA*^
int k=partition(data,i-1,j,data[j]); EY[J;H_b
SortUtil.swap(data,k,j); q! }O+(kt
if((k-i)>1) quickSort(data,i,k-1); l\~F0Z/O
if((j-k)>1) quickSort(data,k+1,j); xtRHb''FX
Z66q0wR7
} nSh}1Arp/
/** +:m'
* @param data ?h'd\.j{
* @param i FFID<Lf/2
* @param j ?-9It|R
* @return 0o-KjX?kP
*/ qX!P:M
private int partition(int[] data, int l, int r,int pivot) { .06[*S
do{ w:o,mzuXK
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kY`L[1G$
SortUtil.swap(data,l,r); f;%\4TH?
} #N `Z)}Jm
while(l SortUtil.swap(data,l,r); ffS]%qa
return l; R3@$ao
} !;;WS~no3
0^&-j.9
} MbjMO"}
i?CXDuL
改进后的快速排序: }`$Sr&n 1
RJT=K{2x
package org.rut.util.algorithm.support; |fg{Fpc
uY Y{M`
import org.rut.util.algorithm.SortUtil; Kv-4VWh
53X5&Bwh
/** ':_1z5
* @author treeroot hha^:,
* @since 2006-2-2 w&^_2<a2
* @version 1.0 0|@*`-:VO
*/ TClgywL
public class ImprovedQuickSort implements SortUtil.Sort { o<8=@ ^T
TSAVXng
private static int MAX_STACK_SIZE=4096; 1<d|@9?9`
private static int THRESHOLD=10; 7.`:Z_
/* (non-Javadoc) a 9f%p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }o MY
*/ Q{+N{/tF
public void sort(int[] data) { z\?cazQ
int[] stack=new int[MAX_STACK_SIZE]; WEFvJ0]
uGH>|V9'c
int top=-1; %,[p[`NRYR
int pivot; &Ew{ {t;"
int pivotIndex,l,r; D\i8WU
~V<imF
stack[++top]=0; Id;YIycXe
stack[++top]=data.length-1; l|p
\8=
?:XbZ"25pJ
while(top>0){ "OO"Ab{t
int j=stack[top--]; l9Sx'<
int i=stack[top--]; $M 1/74
T`.RP&2/d
pivotIndex=(i+j)/2; p8a\> {
pivot=data[pivotIndex]; @80Z@Pj
Pn|*(sTl
SortUtil.swap(data,pivotIndex,j); U k*HRudt
Z
7s
(g]
file://partition Y]gb`z$?
l=i-1; sM$gfFx
r=j; l2LUcI$ x
do{ a+Z95~*sZ"
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?A7_&=J%
SortUtil.swap(data,l,r); dwAFJhgh
} KM;'MlO
while(l SortUtil.swap(data,l,r); 7BDRA},o
SortUtil.swap(data,l,j); ?XNQ_m8f
*iVCHQ~
if((l-i)>THRESHOLD){ OfSHZ;,
stack[++top]=i; <"Cacfg
stack[++top]=l-1; yC]X&1,:z
} b 5X~^L
if((j-l)>THRESHOLD){ :RE.m d
stack[++top]=l+1; _mJnhT3
stack[++top]=j; DHlCus=ic
} i-`n5,
R<jt$--H
} }+4^ZbX+:
file://new InsertSort().sort(data); <Fa]k'<^)
insertSort(data); io{uN/!X_J
} E
Z}c8b
/** #- hYjE5
* @param data {2Jn#&Z29
*/ D-<9kBZs
private void insertSort(int[] data) { ( d2|r)O
int temp; RiX~YLeM
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u79,+H@ep
} ZfYva(zP{Q
} ^ A`@g4!
} O8drR4Pt
SuU_psF
} rL/e
\Gk4J<
归并排序: r-];@
udV.$N
package org.rut.util.algorithm.support; DcQ[zdEz+
N5%zbfKM
import org.rut.util.algorithm.SortUtil; "+6:vhP5
l"#}g%E
/** feH|sz`e
* @author treeroot 30fsVwE2
* @since 2006-2-2 @rO4BTi>O
* @version 1.0 V{j>09u
*/ 3.
kP,
public class MergeSort implements SortUtil.Sort{ ymxYE#q
(A\p5@ht
/* (non-Javadoc) ?{OB+f}Mo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9{;cp?\)M
*/ qx $-% P
public void sort(int[] data) { 8RfFP\ AP
int[] temp=new int[data.length]; KAucSd`
mergeSort(data,temp,0,data.length-1); 0=2D90
} ;;2Yfn'`9
IU8/B+hM~
private void mergeSort(int[] data,int[] temp,int l,int r){ JIl<4 %A
int mid=(l+r)/2; 8d90B9
if(l==r) return ; 4nfpPNt
mergeSort(data,temp,l,mid); s:6pPJL
mergeSort(data,temp,mid+1,r); K9#=@}!3L
for(int i=l;i<=r;i++){ *[-% .=[7
temp=data; >0W:snNK
} 43"`gF]
int i1=l; Y 7a<3>
int i2=mid+1; *<PQp
for(int cur=l;cur<=r;cur++){ xMAfa>]{n
if(i1==mid+1)
f:_\S
data[cur]=temp[i2++]; -gWqq7O
else if(i2>r) vakAl;
data[cur]=temp[i1++]; =,/08Cs
else if(temp[i1] data[cur]=temp[i1++]; W3XVr&
else "pDwN$c
data[cur]=temp[i2++]; Kd?TIeF E
} #+vIq?
} SD "'
n(|~z
} eVobs2s
x-Kq=LFy.
改进后的归并排序:
1^*M*>&d<
yEnurq%J
package org.rut.util.algorithm.support; jm_b3!J
`uO(#au,U
import org.rut.util.algorithm.SortUtil; I.[2-~yf
vPm&0,R*y:
/** hPs7mnSW
* @author treeroot h}X^
* @since 2006-2-2 6*] g)m
* @version 1.0 7X
h'VOljB
*/ Xndgs}zz
public class ImprovedMergeSort implements SortUtil.Sort { "ooq1
0P
)jM'
x&Vg
private static final int THRESHOLD = 10; tgy= .o]
2yu\fu
/* W6_~.m"b
* (non-Javadoc) tOJK~%'
* u!=9.3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
O
"jX|5
*/ U*G8}W
public void sort(int[] data) { BO#XQ,
int[] temp=new int[data.length]; ~i)m(65:
mergeSort(data,temp,0,data.length-1); {*gO1TZt9
} N$8do?
FT*OF 3
private void mergeSort(int[] data, int[] temp, int l, int r) { ,_STt)
int i, j, k; {XT3M{`rWL
int mid = (l + r) / 2; &n_aMZ;
if (l == r) :L~{Q>o
return; pzX684
if ((mid - l) >= THRESHOLD) OLThi[Yn
mergeSort(data, temp, l, mid); |v,5s=}7
else N7S?m@
insertSort(data, l, mid - l + 1); RoV^sbWFt
if ((r - mid) > THRESHOLD) -dCM
eC
mergeSort(data, temp, mid + 1, r); 3 34UMH__
else y\=(;]S'
insertSort(data, mid + 1, r - mid); V'kCd4
^hG
Y,\K9
for (i = l; i <= mid; i++) { _0~WT
temp = data; [(Z sQK
} T=/GFg'
for (j = 1; j <= r - mid; j++) { qb^jcy
temp[r - j + 1] = data[j + mid]; ]g#ur@Y%
} |'w_5?|4
int a = temp[l]; K4]42#
int b = temp[r]; Rgb1B3gu
for (i = l, j = r, k = l; k <= r; k++) { Pm2T!0
if (a < b) { .T*K4m{b0
data[k] = temp[i++]; :6~DOvY
a = temp; O}4(v #
} else { 7MRu=Z.-b
data[k] = temp[j--]; Gi7jgv{{
b = temp[j]; 9ghZLQ
} ttazY#
} D}n&`^1X+
} _cz&f