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。 USyc D`
插入排序: r=n{3o+
t7-]OY7%w_
package org.rut.util.algorithm.support; <Tgy$Hm
%RV81H9B
import org.rut.util.algorithm.SortUtil; GoybkwFjZ
/** }X{rE|@
* @author treeroot vz4(
k/
* @since 2006-2-2 gf8o~vKX$G
* @version 1.0 !2!Zhw2u
*/ ~7ZZb*].(
public class InsertSort implements SortUtil.Sort{ 06Wqfzceb
$4g{4-)
/* (non-Javadoc) o^2MfFS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZXb|3|D
*/ TbD
public void sort(int[] data) { =8 @DYz'
int temp; N[W#wYbH
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0C :8X
} =|i_T%a
} %htI!b+"@
} 3*</vo#`
C+**!uYIB
} ]F+|C
j<kW+Iio
冒泡排序: Am*IC?@tq
o+.L@3RT4
package org.rut.util.algorithm.support; LnE/62){N
,7@\e&/&
import org.rut.util.algorithm.SortUtil; X,w X)9]J
}BC%(ZH6
/** *w@1@6?j
* @author treeroot ;B 8Q,.t>x
* @since 2006-2-2 rn)Gx25
* @version 1.0 VrRF2(Kn?
*/ zF`a:dD$d
public class BubbleSort implements SortUtil.Sort{ GV0@We~
GxzO|vFQ
/* (non-Javadoc) &6s&nx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "e"#k}z9
*/ ppz3"5
public void sort(int[] data) { [voZ=+/
int temp; '/xynk%)xw
for(int i=0;i for(int j=data.length-1;j>i;j--){ >ZkL`!:s
if(data[j] SortUtil.swap(data,j,j-1); 5?$MZaT
} |^Y"*Y4*h
} PoaCnoNS
} s\ C ,5
} =.8n K
y
{*+J`H_G2a
} ~!Sd|e:4
.Qrpz^wdt
选择排序: 7T[$BrO\
nPvys~D
package org.rut.util.algorithm.support; mBwz.KEm<
m?Y-1!E0
import org.rut.util.algorithm.SortUtil; 8:& !F`o
:dW\Q&iW
/** LA;f,CQ
* @author treeroot 2!-Q!c`y
* @since 2006-2-2 `W1uU=c
* @version 1.0 KMi$0+
*/ FUL3@Gb$UV
public class SelectionSort implements SortUtil.Sort { $[A^8[//
q<3La(^/
/* *l`yxz@U
* (non-Javadoc) |*t 2IVwX
* f@;pN=PS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g "Du]_,
*/ uEb:uENk'(
public void sort(int[] data) { VLm\P S
int temp; yJ!26
for (int i = 0; i < data.length; i++) { &UH0Tw4
int lowIndex = i; /(8"]f/
for (int j = data.length - 1; j > i; j--) { 4eB'mPor
if (data[j] < data[lowIndex]) { L[2N zwO
lowIndex = j; w` +,
} +H&/C1u
} [c=Wp
SortUtil.swap(data,i,lowIndex); c!\T0XtT
} 3?j:M]fR
} a%c <3'
^^}htg
} 7NRa&W2
Zocuc"j
Shell排序: XFoSGqD
J\+fkN<.
package org.rut.util.algorithm.support; h^rG5Q
@cIYS%iZ
import org.rut.util.algorithm.SortUtil; NB<8M!X/
?<4pYEP
/** b * \
oQ
* @author treeroot U<&=pv
* @since 2006-2-2 ]a/dvj}
* @version 1.0 BTwc(oL
*/ *
;sz/.
public class ShellSort implements SortUtil.Sort{ ZgEV-.>P
~/A2:}Cp=
/* (non-Javadoc) MD$W;rk(Hn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vf:.C|Z
*/ $s=` {v v
public void sort(int[] data) { +)yoQRekX
for(int i=data.length/2;i>2;i/=2){ .$peq
for(int j=0;j insertSort(data,j,i); @$kO7k0{g
}
yHE\Q
} j)8$hK/e0.
insertSort(data,0,1); 1 .@{5f3T
} |e!Y
C iU
Y.I~.66s
/** '2Zs15)V
* @param data T\Xf0|y
* @param j #xx.yn(7
* @param i T\.~!Q
*/ +fY@q,`
private void insertSort(int[] data, int start, int inc) { Kh4rl)L*+%
int temp; #@-dT,t
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |in>`:qk
} ?`Z:vqp>Z
} yz0#0YG7
} f%n ;Z}=
6H2Bf*i
} 6wpu[
LsI@_,XW<
快速排序: {9;-5@b
:mDOqlXW/
package org.rut.util.algorithm.support; Ie!">8."
c]1AM)xo
import org.rut.util.algorithm.SortUtil; 13 L&f\b
VWt=9D;
/** !/H `
* @author treeroot ,)U%6=o#}
* @since 2006-2-2
,
0X J|#%
* @version 1.0 zQO 1%g
*/ ?#<'w(^%#
public class QuickSort implements SortUtil.Sort{ &b,A-1`w_
QsPg4y3?D
/* (non-Javadoc) \s)$[pAF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X!6dg.n5
*/ /m>SEo\{C
public void sort(int[] data) { /C'_-U?
quickSort(data,0,data.length-1); cV1E<CM
} 2s,cyCw&
private void quickSort(int[] data,int i,int j){ q;QasAQS`p
int pivotIndex=(i+j)/2; #F3'<(j
file://swap <i]-.>&J
SortUtil.swap(data,pivotIndex,j); s^6,"C
2N |iOog
int k=partition(data,i-1,j,data[j]); ,>qtnwvlHP
SortUtil.swap(data,k,j); L Y4bn)Qf
if((k-i)>1) quickSort(data,i,k-1); $s
,g&7*-
if((j-k)>1) quickSort(data,k+1,j); e]>=;Zn
Ui"$A/
} _IEbRVpb
/** ~x4]p|)</
* @param data d14@G4#Bd
* @param i )@U~Li/+
* @param j HLthVc w
* @return =d@)*W 6
*/ v; ewMiK@E
private int partition(int[] data, int l, int r,int pivot) { qmPu D/c
do{ )gU:Up24|"
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
)bYOy+2g
SortUtil.swap(data,l,r); _qOynW
} H/ e jO_{
while(l SortUtil.swap(data,l,r); }jce5E
return l;
!Q_Kil.9
} \I6F;G6
=B+dhZ+#S$
} XmwR^
hxJKYU^%m
改进后的快速排序: p]~PyzG!
Jk`l{N
package org.rut.util.algorithm.support; 8?'=Aeo
l{?9R.L
import org.rut.util.algorithm.SortUtil; 0S+$l
&\5bo=5V
/** zA|lbJz=GY
* @author treeroot s)3CosU
* @since 2006-2-2 J?t(TW6E
* @version 1.0 o&k,aCQC
*/ .*595SuF
public class ImprovedQuickSort implements SortUtil.Sort { #ax% n
zmuRn4Nv
private static int MAX_STACK_SIZE=4096; MYxuQ |w
private static int THRESHOLD=10; DuAix)#FN9
/* (non-Javadoc) pnuwjU-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d'Dd66
*/ f2KH&j>~r
public void sort(int[] data) { l.;^w
int[] stack=new int[MAX_STACK_SIZE]; pFu!$.Fr
JAMV@
int top=-1; wr:-n
int pivot; r-WX("Vvh
int pivotIndex,l,r; 8In~qf
I3Z\]BI
stack[++top]=0; @3b @]l5
stack[++top]=data.length-1; %/nDG9l
K'E)?NW69
while(top>0){ EN}4-P/5
int j=stack[top--]; G:|]w,^i
int i=stack[top--]; 8WQc8
0&kmP '
pivotIndex=(i+j)/2; /{[tU-}qJ
pivot=data[pivotIndex]; hCX/k<}I
?mVSc/
SortUtil.swap(data,pivotIndex,j); u]9 #d^%V
NYxL7 :9
file://partition 8U]mr+
l=i-1; 09Q5gal
r=j; nemC-4}
do{ A 3q#,%
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !iX/Ni:
SortUtil.swap(data,l,r); \|]+sQ WQ
} :To{&T
while(l SortUtil.swap(data,l,r); z}r
SortUtil.swap(data,l,j); v$;URF%^
?c_:S]^
if((l-i)>THRESHOLD){ DbR!s1ux
stack[++top]=i; d[H`Fe6h
stack[++top]=l-1; Kj?hcGl[
} `6NcE-oJ
if((j-l)>THRESHOLD){ EuVA"~PA
stack[++top]=l+1; *|6vCR
stack[++top]=j; cs: ?Wq ^
} I~ mu'T
nI73E
} va#].4_
file://new InsertSort().sort(data); Nd;pkssd
insertSort(data); ]_L;AD
} Q!AGalP z
/** (v0Q.Q@<
* @param data ]-+l.gVFW
*/ HYJEz2RF
private void insertSort(int[] data) { O
~[[JAi[
int temp; _3g!_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "-IF_Hid
} N
/;Vg^Wx
} XVKRT7U
} ;D(6Gy9~
.F _u/"**
} 9A`^ (
f&Sovuuh
归并排序: #z*,-EV|
3^)c5kcI
package org.rut.util.algorithm.support; e+m(g
3Zp q#
import org.rut.util.algorithm.SortUtil; \mt Y_O
`Xi)';p
/** bXM&VW?OP
* @author treeroot \4fuC6d2
* @since 2006-2-2 %_39Wa
* @version 1.0 r'*#i>PkQD
*/ YQ1rS X3
public class MergeSort implements SortUtil.Sort{ ^%U`|GBZp
z_(4
/* (non-Javadoc) (K ]wk9a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }_+) :<Db
*/ pG v*{.
public void sort(int[] data) { @c>MROlrlF
int[] temp=new int[data.length]; 6OtNWbB
mergeSort(data,temp,0,data.length-1); Ty;^3
} szOa yAS
9'vf2) "
private void mergeSort(int[] data,int[] temp,int l,int r){ #! (2@N8
int mid=(l+r)/2; F}B2nL&
if(l==r) return ; |b!Bb<5
mergeSort(data,temp,l,mid); zTn.#-7y
mergeSort(data,temp,mid+1,r); W$z^U)|t
for(int i=l;i<=r;i++){ ,n UovWN07
temp=data; #=F{G4d)!=
} sr<\fW
int i1=l; vcP_gJz
int i2=mid+1; y8v0>V0)
for(int cur=l;cur<=r;cur++){ )L"J?wTe
if(i1==mid+1) [XP\WG>s
data[cur]=temp[i2++]; k/Q8:qA
else if(i2>r) _( QW2m?K
data[cur]=temp[i1++]; &o`LT|*m
else if(temp[i1] data[cur]=temp[i1++]; ndvt
$*
else LO%OH
u}]
data[cur]=temp[i2++]; a{.-qp
} \rH0=~F-P
} HeHo?<>|d
@[TSJi
} !]8QOn7 =
Zo Ra^o
改进后的归并排序: q9Lq+4\
~x+&cA-0A2
package org.rut.util.algorithm.support; Saks~m7,
C&.Q|S2_
import org.rut.util.algorithm.SortUtil;
Q6r
WvcPOt8Bp>
/** :;&3"-
* @author treeroot tR?)C=4,
* @since 2006-2-2 {CgF{7`
* @version 1.0 U6YQ*%mZ_
*/ \.=,}sV2Z
public class ImprovedMergeSort implements SortUtil.Sort { L~Xzo
:M@#.
private static final int THRESHOLD = 10; X09i+/ICK
<4"Bb_U
/* LiEDTXRz
* (non-Javadoc) W;F=7[h
* J2!)%mF$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c
<X( S
*/ [3v&j_
public void sort(int[] data) { -Y>QKS
int[] temp=new int[data.length]; .6iJ:A6T
mergeSort(data,temp,0,data.length-1); 6MQyr2c
} Z:VT%-
h-%RSei5
private void mergeSort(int[] data, int[] temp, int l, int r) { /Em6+DN>
int i, j, k; wf~n>e^e
int mid = (l + r) / 2; 58PL@H~@0
if (l == r) D!V*H?;U
return; wHs4~"EY9
if ((mid - l) >= THRESHOLD) V"A*B
mergeSort(data, temp, l, mid); %)y-BdSp.
else z[]8"C=
insertSort(data, l, mid - l + 1); lh;;%@1DM
if ((r - mid) > THRESHOLD) JiX-t\V ~
mergeSort(data, temp, mid + 1, r); odTIz{9qG
else 9y;zk$O8
insertSort(data, mid + 1, r - mid); BHS8MV L@
KWn.
for (i = l; i <= mid; i++) { s<8|_Dt
temp = data; Jwbb>mB!
} 1sXVuto
for (j = 1; j <= r - mid; j++) { Az6tu <
temp[r - j + 1] = data[j + mid]; ohPDknHp
} bO
}9/Ay
int a = temp[l]; rG'W#!^*
int b = temp[r]; X>eFGCz}I
for (i = l, j = r, k = l; k <= r; k++) { 0G8zFe*p
if (a < b) { H|<Zm:.%$
data[k] = temp[i++]; @zig{b 8
a = temp; BBj>ML\X
} else { #$u7:p
[t
data[k] = temp[j--]; v3r<kNW_
b = temp[j]; IGI$,C
} ;2547b[]
} j$r2=~1
} 8/W2;>?wKc
!InC8+be
/** 77%I%<#
* @param data %"AB\lL.
* @param l :Gf
* @param i KOhIk*AC'
*/ ?rQIUP{D7
private void insertSort(int[] data, int start, int len) { !Gh*Vtd8-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +\25ynM
} 6f;20dn6
} m@g9+7
} EskD)Sl
} OTWp,$YA=
@}_Wl<kn
堆排序: +.66Ky`|[
WdT iao,r
package org.rut.util.algorithm.support; Z (C0+A\
bfKF6
import org.rut.util.algorithm.SortUtil; _k Utj(re
t:tIzFNv
/** \T^ptj(0
* @author treeroot Z<[:v2
* @since 2006-2-2 e^or qw/I
* @version 1.0 oN=>U"<\1
*/ bA/'IF+
public class HeapSort implements SortUtil.Sort{ Z4D[nPm$
:+meaxbu
/* (non-Javadoc) 4&G
#Bi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^NFL3v8
*/ ?l^NKbw
public void sort(int[] data) { *Jg&:(#}<J
MaxHeap h=new MaxHeap(); ;AJ6I*O@+
h.init(data); 1( rN
for(int i=0;i h.remove(); |L(h+/>aWX
System.arraycopy(h.queue,1,data,0,data.length); @8lT*O2j
} 9rgvwko
X1^Q1?0
private static class MaxHeap{ wfQImCZ>l
k;l^y%tzp
void init(int[] data){ 1i@a? 27|
this.queue=new int[data.length+1]; :O]US)VSj
for(int i=0;i queue[++size]=data; aJ
J63aJ
fixUp(size); f;obK~b[
} 4,?WNPqo
} q;QE(}.g
& DhdB0Hjf
private int size=0; .T#}3C/
kp^q}iS
private int[] queue; 7
/XfPF
&M6Zsmo
public int get() { u4DrZ-v
return queue[1]; R ^@
} ?$ M:4mX
H}gp`YW:4
public void remove() { <AU0ir
SortUtil.swap(queue,1,size--); b8|<O:]Hp
fixDown(1); ,z`* 1b8
} Xx ou1l!
file://fixdown \hg%J/
private void fixDown(int k) { zB'_YwW
int j; Koc5~qUY]
while ((j = k << 1) <= size) { Dfy=$:Q
if (j < size %26amp;%26amp; queue[j] j++; *Nur>11D
if (queue[k]>queue[j]) file://不用交换 ,n&Lp
break; Fmzkbt~oe
SortUtil.swap(queue,j,k); XUTsW,WC
k = j; o&>aYlXd
} 06[HE7
} ^m -w@0^z
private void fixUp(int k) { !HKW_m^3J
while (k > 1) { UvuAN:'
int j = k >> 1; X u2+TK
if (queue[j]>queue[k]) OtoG,~?
break; 'ji|'x T
SortUtil.swap(queue,j,k); 3(_:"?x A
k = j; e//jd&G