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。 !m)P*Lw
插入排序: *<?or"P
+Gv{Apd"
package org.rut.util.algorithm.support; |_ ZD[v S
a'=C/ s+
import org.rut.util.algorithm.SortUtil; <20rxOEnf
/** #n&/yYl9(l
* @author treeroot (GB2("p`
* @since 2006-2-2 NfqJ>[}I+
* @version 1.0 a-w=LpVM
*/ gn"Y?IZ?
public class InsertSort implements SortUtil.Sort{ Ln/6]CMl
o;bK 7D
/* (non-Javadoc) DrE
+{Spm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uJ;7]
*/ r_/=iYYJ
public void sort(int[] data) { vpR^G`/
int temp; (`h$+p^-y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o|#Mq"od
} |Y#KMi ~
} \z>Re$:
} <-KHy`u
pm$ZKM
} e45gjjts
9+<%74|,
冒泡排序: `@+}zE
g=w,*68vuy
package org.rut.util.algorithm.support; g3[Zh=+]E
#D8Z~U,-
import org.rut.util.algorithm.SortUtil; f4.k%| ]
f+>l-6M+p
/** R Fgy
* @author treeroot WmU5YZ(mAq
* @since 2006-2-2 UUb n7&
* @version 1.0 %JmRJpCvR
*/ Kjbt1n
public class BubbleSort implements SortUtil.Sort{ !O=?n<Ex"
{ctEjgiE
/* (non-Javadoc) jtqH3xfy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r(sQI#
P
*/ !]c]:ed\C
public void sort(int[] data) { 2kg<O%KA`c
int temp; ,#=ykg*~/
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,Qvclu8r
if(data[j] SortUtil.swap(data,j,j-1); a^yBtb~,P
} aq-`Bar
} jG($:>3a@
} @**@W[EM
} l5sBDiir%
]3.Un,F
} VayU
>7@kwj-f)
选择排序: |n9~2R
VAkZ@
u3'~
package org.rut.util.algorithm.support; DG_tmDT4
K:}~8 P>^
import org.rut.util.algorithm.SortUtil; k2>gnk0
Fv!zS.)`
/** gH87e
* @author treeroot mKWfRx*UdG
* @since 2006-2-2 f1R&Q
* @version 1.0 vCC}IDd
*/ X8!=Xjl)
public class SelectionSort implements SortUtil.Sort { yX:A?U
/Mq]WXq[V
/* W}+f}/&l
* (non-Javadoc) r()%s3$q
* k<b`v&G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >z0~!!YZ
*/ _ED,DM
public void sort(int[] data) { -9BKa~ DVQ
int temp; e|wH5(V
for (int i = 0; i < data.length; i++) { o`^GUY}
int lowIndex = i; .H1kl)~V
for (int j = data.length - 1; j > i; j--) { BoZG^
if (data[j] < data[lowIndex]) { urGk_.f
lowIndex = j; r,p6J7/lfS
} TmS;ybsG
} @\gTi;u/x
SortUtil.swap(data,i,lowIndex); p%304oP6
} JyPsRpi\
} `?{Hs+4P5
r4Ygy/%
} /'|'3J]HP
XQEGMaZ
Shell排序: YJgw%UVJ5m
3[Pa~]yS
package org.rut.util.algorithm.support; T-7'#uB.m
U\S%Jq*
import org.rut.util.algorithm.SortUtil; %N)o*H&
&fBLPF% 6
/** 2A3;#v
* @author treeroot Uo{h.
.7?
* @since 2006-2-2 ]2n&DJu
* @version 1.0 Zl]Zy}p* +
*/ DQg:W |A
public class ShellSort implements SortUtil.Sort{ 5qco4@8
4)=LOGW
/* (non-Javadoc) dfB#+wh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &]~z-0`$!
*/ LV:oNK(
public void sort(int[] data) { ?WWnt^
for(int i=data.length/2;i>2;i/=2){ Kb0OauW
for(int j=0;j insertSort(data,j,i); v _Bu
} 7BCCQsz<
} -B2>~#L
insertSort(data,0,1); Du>dTi~
} [KkLpZG
oS)0,p
/** Z,o*M#}
* @param data ]s jFj
* @param j
G8`q-B}q
* @param i -tT{h4
*/ 76[aOC2Ad
private void insertSort(int[] data, int start, int inc) { ]?,47,[<
int temp; i;^
e6A>
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); } oJ+2OepN
} r&"}zyL
} >H@
dgb
} ZeK*MPxQ
9A\J*OU
} ,oDZ:";
v:CYf_
快速排序: 2uw%0r3Vi6
IDzP<u8v
package org.rut.util.algorithm.support; mBc;^8I?23
sCaw"{5qc
import org.rut.util.algorithm.SortUtil; }.gDaxj
=KNg "|
/** OM]p"Jd
* @author treeroot @Th.=
* @since 2006-2-2 oypq3V=5
* @version 1.0 =,-80WNsX
*/ F=B>0Q5
public class QuickSort implements SortUtil.Sort{ i>T{s-3v
jL8&
/* (non-Javadoc) 1SkGG0
W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DcoTa-~
*/ i[d-n/)
public void sort(int[] data) { 65ijzZL;
quickSort(data,0,data.length-1); Rjo6Pd{d<
} j3`:;'L
private void quickSort(int[] data,int i,int j){ @Sub.z&T{
int pivotIndex=(i+j)/2; 7H[#
file://swap D8h?s
SortUtil.swap(data,pivotIndex,j); abD55YJY
D.qbzJz
int k=partition(data,i-1,j,data[j]); Q(AOKp,F
SortUtil.swap(data,k,j);
30FYq?
if((k-i)>1) quickSort(data,i,k-1); `;*=2M<c
if((j-k)>1) quickSort(data,k+1,j); 2K,
1wqf'
a>sUq["
} nUmA
/** g_>)Q
* @param data Ca+d
?IS
* @param i 6$SsdT|8B
* @param j j/ 9FiuK
* @return U@D=.6\B
*/ XPUH\I=
private int partition(int[] data, int l, int r,int pivot) { E_WiQ?p
do{
Js^ADUy
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )^%,\l-!
SortUtil.swap(data,l,r); I$qL=
} 6JRee[
while(l SortUtil.swap(data,l,r); `{F8#
return l; a+\Gz
} uHz
D
P;hjr;
} 9AB~*;U
LdWeI
改进后的快速排序: j(nPWEyJM
aH"tSgi
package org.rut.util.algorithm.support; gADt%K2#Z
b^Rg_,s
import org.rut.util.algorithm.SortUtil; s}|IRDpp
~ D3'-,n[
/** s_`wLQ7e
* @author treeroot + 6r@HK`,t
* @since 2006-2-2 B+zq!+ HJ
* @version 1.0 ;1{S"UY
*/ = \X<UA}
public class ImprovedQuickSort implements SortUtil.Sort { ^Po\:x%o
Ku,Efr
private static int MAX_STACK_SIZE=4096; ( Y/
DMQ
private static int THRESHOLD=10; /8W}o/,s5
/* (non-Javadoc) WHE*NWz>q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) webT
*/ (CZRX9TT1
public void sort(int[] data) { pk;bx2CP8
int[] stack=new int[MAX_STACK_SIZE]; 6_zL#7E'
V7rcnk#
int top=-1; f_raICO{R
int pivot; 1RRvNZW
int pivotIndex,l,r; A
FfgGO
%HYC-TF#
stack[++top]=0; kP8Ypw&
stack[++top]=data.length-1; i9.52
fVf.u'.8
while(top>0){ @ULr)&9
int j=stack[top--]; B>?. Nr
int i=stack[top--]; 6"_FjS3Sl
OkzfQ
hC}
pivotIndex=(i+j)/2; r T*:1
pivot=data[pivotIndex]; zKiKda%)
a |z{Bb
SortUtil.swap(data,pivotIndex,j); /tt
% j^=
file://partition @*%.V.
l=i-1;
ZfvFs
r=j; TC R(
do{ EWqKd/
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fWKv3S1dT
SortUtil.swap(data,l,r); h ?p^DPo
} ~=0zZTG
while(l SortUtil.swap(data,l,r); 4qyL' \d[
SortUtil.swap(data,l,j); ;! CQFJ=
/6 P()Upe
if((l-i)>THRESHOLD){ u:m]-'
stack[++top]=i; JN3Oe5yB2@
stack[++top]=l-1; NsJUruN
} vaK$j!%FE
if((j-l)>THRESHOLD){ b,318R8+G
stack[++top]=l+1; `86 9XE
stack[++top]=j; 37lmB
'~
} u[d8)+VX
Keof{>V=CA
} u.!Pda
file://new InsertSort().sort(data); #~p1\['|M
insertSort(data); 39m#
} +Do7rl
/** 1Z`<HW"
* @param data VK?,8Y
*/ .[O*bk
private void insertSort(int[] data) { 9IIe:
int temp; *5|\if\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *AxKV5[H
} {kZhje^$vi
} x%x[5.CT
} OkFq>;{a
LClPAbr
} o'D6lkf0
$> #PhOC
归并排序: ]Fjz+CGg
L:B&`,E
package org.rut.util.algorithm.support; o.k#|q
yl3iU:+V
import org.rut.util.algorithm.SortUtil; M}@^8
(dO4ww@O
/** W:0@m^r
* @author treeroot YHeB<v
* @since 2006-2-2 n|^-qy'w
* @version 1.0 x$M[/ID0
*/ R8HA X
public class MergeSort implements SortUtil.Sort{ 44_n5vp,T
;%U`lE0
/* (non-Javadoc) P^1rNB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !})+WSs'"s
*/ t/q\Ne\\,
public void sort(int[] data) { ]`UJwq
int[] temp=new int[data.length]; 9prG@
mergeSort(data,temp,0,data.length-1); Q$RP2&
} ,Xb :f/lB
8qBw;A)
private void mergeSort(int[] data,int[] temp,int l,int r){ LY^BkH'
int mid=(l+r)/2; G-}
zkax
if(l==r) return ; ew"[]eZ:ut
mergeSort(data,temp,l,mid); St&XG>nWS
mergeSort(data,temp,mid+1,r); c"0CHrd
for(int i=l;i<=r;i++){ Vuz!~kLYIn
temp=data; 3-_4p8OK
} iOD9lR`s
int i1=l; My5X%)T>P
int i2=mid+1; + ^~n09
for(int cur=l;cur<=r;cur++){ NG b`f-:jw
if(i1==mid+1) 3HfT9
data[cur]=temp[i2++]; A)VOv`U@2
else if(i2>r) s!UC{)g,
data[cur]=temp[i1++]; a_Xh(d$
else if(temp[i1] data[cur]=temp[i1++]; BKJW\gS2
else I:Z38xz -[
data[cur]=temp[i2++]; geT<vh Z6
} qP]Gl--q{
} Wc+ e>*
\w`Il"}V
} L-=^GNh
@Yt[%tOF+
改进后的归并排序: 'rd{fe_g!
9N-mIGJ
package org.rut.util.algorithm.support; r2H]n.MT
U8.DPRa
import org.rut.util.algorithm.SortUtil; XFM6.ye
gE8>5_R|
/** \WZ00Y,*
* @author treeroot Ho\z^w+T`
* @since 2006-2-2 f)gA.Rz
* @version 1.0 7eu7ie6
*/ rKR<R(=!=
public class ImprovedMergeSort implements SortUtil.Sort { iaPY>EP1
1L^\TC
private static final int THRESHOLD = 10; 6Lz&"C,`
GL
(YC-{
/* i;Gl-b\_h
* (non-Javadoc) WI~';dK2]
* m2\ZnC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T\2cAW5
*/ k.0$~juu
public void sort(int[] data) { ,!Ah+x
int[] temp=new int[data.length]; JqFFI:Q5a
mergeSort(data,temp,0,data.length-1); *a\1*Jk
} Ak|jJ
od-N7lp#
private void mergeSort(int[] data, int[] temp, int l, int r) { ];(w8l
int i, j, k; ~9x$tb x-
int mid = (l + r) / 2; CJ%7M`zy
if (l == r) ;:'A{&0N
return; -KOE2f
if ((mid - l) >= THRESHOLD) 9I.="b=J)
mergeSort(data, temp, l, mid); +/AW6
else wn|Sdp
insertSort(data, l, mid - l + 1); YZ'gd10T
if ((r - mid) > THRESHOLD) uv._N6mj
mergeSort(data, temp, mid + 1, r); @'~v~3
$S
else %hOe `2#$
insertSort(data, mid + 1, r - mid); 4.R
>mN[
l$.C40v
for (i = l; i <= mid; i++) { -w^E~J0*L
temp = data; 7FfzMs[\e
} 'N'EC`R
for (j = 1; j <= r - mid; j++) { OSsdB%bIu`
temp[r - j + 1] = data[j + mid]; s{hJ"lv:
} u'P@3'P
int a = temp[l]; "EHwv2Hm>
int b = temp[r]; Hz+edMUL
for (i = l, j = r, k = l; k <= r; k++) { !a4pKN`qLY
if (a < b) { e|xRK?aVBu
data[k] = temp[i++]; uiO8F*,!&r
a = temp; !=eui$]
} else { 8CwgV
data[k] = temp[j--]; m<