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。 3i'L5f67
插入排序: F#w=z/
CcZ\QOet&C
package org.rut.util.algorithm.support; lklMdsIdj
crt
)}L8-
import org.rut.util.algorithm.SortUtil; +JMB98+l
/** iwl\&uNQU
* @author treeroot o7*z@R"
* @since 2006-2-2 ]HK|xO(
* @version 1.0 Ty21-0F
*/ H7KcPN(0
public class InsertSort implements SortUtil.Sort{ sacaL4[_<
jz%%r Q(
/* (non-Javadoc) i0%S6vmaS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .}>DEpc:n
*/ 9o]h}Xc
public void sort(int[] data) {
N{u4
int temp; 1h.N
&;vy
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L)cy&"L|
} =~i~SG/f
} _^<HlfOK
} pk*cch#
w}<CH3cx
} ^f-?xXPx
Q}N.DM@d3
冒泡排序: oc>ne]_'
v^ a.
b
package org.rut.util.algorithm.support; f<V#Yc(U}
e[HP]$\
import org.rut.util.algorithm.SortUtil; Tkhu,
Su0[f/4m.Q
/** $\|$ekil4
* @author treeroot G.3qg%
* @since 2006-2-2 F(- Q]xj,
* @version 1.0 I&oHVFY+
*/ 1Y"[Qs]"mU
public class BubbleSort implements SortUtil.Sort{ v(T;Y=&
Y7yh0r_
/* (non-Javadoc) ,iXE3TN;W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cw<bu|?
*/ .~+I"V{yF
public void sort(int[] data) { <Q06<{]R8
int temp; 8$:4~:]/
for(int i=0;i for(int j=data.length-1;j>i;j--){ >g!a\=-[
if(data[j] SortUtil.swap(data,j,j-1); u.t(78N
} OKU9v{
} 8,BNs5
} _y q"F#,*
} J
00%,Ju_
>;N0( xB
} 3le/(=&1
Ng?n}$g*
选择排序: EROf%oaz=
2t3'"8xJ
package org.rut.util.algorithm.support; em
&wbe^Wp
import org.rut.util.algorithm.SortUtil; AR i_m
fA!uSqR$V
/** jlV~-}QKb7
* @author treeroot wz-9+VN6
* @since 2006-2-2 0f).F
* @version 1.0 OXy>Tlv
*/ 36154*q
public class SelectionSort implements SortUtil.Sort { N#-P}\Q9
qm-G=EX
/* x[+t
* (non-Javadoc) NGD?.^ (G
* B{ wx"mK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vd2bG4*=
*/ fZ2>%IxG}
public void sort(int[] data) { P;D)5yP092
int temp; }ZMbTsm
for (int i = 0; i < data.length; i++) { ~7Ey9wRkD
int lowIndex = i; %t&n%dhJ
for (int j = data.length - 1; j > i; j--) { !7MC[z(|N
if (data[j] < data[lowIndex]) { YN1P9j#0d
lowIndex = j; d`D<PT(\
} )GDP?Nc<Ik
} lE~5 b
SortUtil.swap(data,i,lowIndex); b[<zT[.:
} qEC-'sl<
} U^trZ])
cD&53FPXC
} S) /(~
TFbMrIF
Shell排序: eHCLENLmB
G992{B
package org.rut.util.algorithm.support; !/W[6'M#p
*ip2|2G$
import org.rut.util.algorithm.SortUtil; @EZ@X/8{&
5Z]zul@+*
/** 3 8>?Z]V
* @author treeroot zY\pZG
* @since 2006-2-2 1ID0'j$
* @version 1.0 /3F4t
V
*/ X\tE#c&K
public class ShellSort implements SortUtil.Sort{ v\>!J?
/; ;_l2 t
/* (non-Javadoc)
h:iK;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T^3_d93}d
*/ XK[cbVu
public void sort(int[] data) { zKr\S|yE
for(int i=data.length/2;i>2;i/=2){ 99%oY
for(int j=0;j insertSort(data,j,i); A;nrr1-0
} 5mwtlC':l?
} 5[.Dlpa'7
insertSort(data,0,1); F-?K]t#
} T8&
kxp
$Hcp.J[O
/** 8W$uw~|dw
* @param data ezRhSN?
* @param j -1Acprr
* @param i
3n;UXYJ%
*/ w%jc' ;|
private void insertSort(int[] data, int start, int inc) { .i[rd4MCK
int temp; lP*_dt9
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Y4cIYUSc
} x8I=I"Sp
} okfGd=
&
} }J27Y;Zp9
{-*+G]
} :_;9&[H9ha
QR<z%4
快速排序: |QwX
\M~M
package org.rut.util.algorithm.support; Y !e
0|<ER3xkx
import org.rut.util.algorithm.SortUtil; vzl+0"
tu}AJ
/** Ws"eF0,'Z
* @author treeroot gBQK
* @since 2006-2-2 $\kqh$")
* @version 1.0 4fPbwiKj
*/ = h,6/cs
public class QuickSort implements SortUtil.Sort{ +]^6&MqO
Pt~mpRlH
/* (non-Javadoc) R7: >'*F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h|h-< G?>
*/ 2P9gS[Ub
public void sort(int[] data) { &WN#HI."]
quickSort(data,0,data.length-1); Vb>!;C
} c , a+u
private void quickSort(int[] data,int i,int j){ 0j*-ZvE)30
int pivotIndex=(i+j)/2; G}1?lO_d`
file://swap [t@
SortUtil.swap(data,pivotIndex,j); ~^*IP1.3
OQ&?^S`8',
int k=partition(data,i-1,j,data[j]); fC>3{@h}*
SortUtil.swap(data,k,j); <k)@PAV
if((k-i)>1) quickSort(data,i,k-1); 1"J\iwN3
if((j-k)>1) quickSort(data,k+1,j); aa:Oh^AJy
`2 X~3im
} e;KZTH;
/** Mf)0Y~_:R#
* @param data F(*~[*Ff
* @param i 9U1cH qV
* @param j |:_WdU"Q]
* @return ft oz0Vb
*/ 'f0*~Wq|
private int partition(int[] data, int l, int r,int pivot) { C2RR(n=N^
do{ \a]JH\T)Q
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); bl. y4
SortUtil.swap(data,l,r); `p`)D6
} ~e,k71
while(l SortUtil.swap(data,l,r); N yT|=`;
return l; )SG+9!AbMZ
} @T53%v<5
=KfV;.&
} m1DzUq;
:A%|'HxH3
改进后的快速排序: vJ96qX
|0 #J=am
package org.rut.util.algorithm.support; iHy=92/Ww
rbl EyCR
import org.rut.util.algorithm.SortUtil; KLpu7D5(|
=fmM=@!$<
/** =C{)i@ +
* @author treeroot _^cDB1I?
* @since 2006-2-2 <eRE;8C-
* @version 1.0 s'\PU1{
*/ 6u>${}
public class ImprovedQuickSort implements SortUtil.Sort { .kWMr^ g
i=$##
private static int MAX_STACK_SIZE=4096; \tf \fa
private static int THRESHOLD=10; K5-wuD1
/* (non-Javadoc) lA[BV7.=7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M&P?/Zi=L
*/ bqEQP3t^
public void sort(int[] data) { ~\A(xmW}
int[] stack=new int[MAX_STACK_SIZE]; uJ jm50R<
Y<%)Im6v/
int top=-1; ;ru=z@
int pivot; f\+MnZ4[Qj
int pivotIndex,l,r; iB#xUSkS
dL%?k@R
stack[++top]=0; NoS|lT
stack[++top]=data.length-1; SP][xdN7
K3jKOV8
while(top>0){ ] h3~>8<
int j=stack[top--]; + v. I|c
int i=stack[top--]; M\5aJ:cQ+
TJS/ O~=
pivotIndex=(i+j)/2; yRt]i>
pivot=data[pivotIndex]; K=x>%6W7b
Y;3DU1MG0
SortUtil.swap(data,pivotIndex,j);
l);M(<
gMe)\5`\Y
file://partition YCvIB'
l=i-1; $$7Mq*a>
r=j; p!5oz2RK
do{ e|x1Dq
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); r\J"|{)e
SortUtil.swap(data,l,r); rEwEdyK
} 2QwdDKMS_
while(l SortUtil.swap(data,l,r); O>]I!n`!!A
SortUtil.swap(data,l,j); hwkm'$}
w"Gci~]bXU
if((l-i)>THRESHOLD){ ">='l9
stack[++top]=i; /wplP+w2
stack[++top]=l-1; G gmv(!
} HGqT"NJr
if((j-l)>THRESHOLD){ R;+vE'&CO
stack[++top]=l+1; ??&Q"6Oe
stack[++top]=j; KF^5 C
} P]]re,&R
jOL $kiW0
} aO:wedfl
file://new InsertSort().sort(data); +3]1AJa
insertSort(data); H_gY)m
} R5M/Ho 4
/** $X1T!i[.X
* @param data 8Jnb/A}
*/ kSJWXNC
private void insertSort(int[] data) { &%M!!28X:
int temp; ];& @T\Rj
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;T1OXuQ
} jWHv9XtW
} A1Tk6i<F1
} ktlI(#\%
N y_d
} &h1.9AO
cMxuG'{=.
归并排序: -4du`dg
\;&WF1d`ac
package org.rut.util.algorithm.support; pVgzUu7
\\Ps*HN
import org.rut.util.algorithm.SortUtil; #R2wt7vE
)+;Xfftz
/** W"j&':xD
* @author treeroot JC|j*x(k/
* @since 2006-2-2 (+SfDL$m
* @version 1.0 :x"Q[079
*/ bCWSh~
public class MergeSort implements SortUtil.Sort{ [n%=2*1p
J~.8.]gXW
/* (non-Javadoc) DIrQ5C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^0oOiZs
*/ %K0
H?^.
public void sort(int[] data) { ;2Aqztp
int[] temp=new int[data.length]; $oF0[ }S
mergeSort(data,temp,0,data.length-1);
DZPg|*KT
} V~nqPh!Jc
^{f^%)X
private void mergeSort(int[] data,int[] temp,int l,int r){ "^/3?W>
int mid=(l+r)/2; 'ii5pxeNI
if(l==r) return ; S\$=b_.
mergeSort(data,temp,l,mid); x-0O3IIE
mergeSort(data,temp,mid+1,r); tzH~[n,
for(int i=l;i<=r;i++){ pC=kv ve
temp=data; WC2sRv4]3
} D^]g`V*N
int i1=l; hnOo T? V
int i2=mid+1; IRWVoCc9/\
for(int cur=l;cur<=r;cur++){ p7H0|>
if(i1==mid+1)
g!/O)X3
data[cur]=temp[i2++]; Ife/:v
else if(i2>r) >@Vap
data[cur]=temp[i1++]; =i'APeNaQ
else if(temp[i1] data[cur]=temp[i1++]; o$PY0~#
else Sfl. &A(
data[cur]=temp[i2++]; >;wh0dBe
} -zn$h$N4
} *@;Pns]L-
lVb{bO9-O
} [S Jx\Os
_JEe]
改进后的归并排序: -@=As00Bg
~m`j=ot
package org.rut.util.algorithm.support; 4MM /i}
=r1-M.*a.M
import org.rut.util.algorithm.SortUtil; L_@P fI
mbSG
/** w|t}.u
* @author treeroot MS7rD%(,'
* @since 2006-2-2 %%uvia=e
* @version 1.0 4$~A%JN3
*/ m$XMq
public class ImprovedMergeSort implements SortUtil.Sort { wk+| }s
WdtZ{H
private static final int THRESHOLD = 10; }\#u~ k!l
:'6vIPN5
/* ;RR\ Hwix
* (non-Javadoc) $p(
* 7XM:4whw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;W~H|M
*/ M9C
v00&
public void sort(int[] data) { Fy#y.jK9v
int[] temp=new int[data.length]; !xD$U/%c
mergeSort(data,temp,0,data.length-1); g"}j
} ^*g= 65!1
]a=n(`l?
private void mergeSort(int[] data, int[] temp, int l, int r) { s:/Wz39SY3
int i, j, k; \&XtPQ
int mid = (l + r) / 2; ]H {g/C{j
if (l == r) ?1afW)`a.v
return; $cSmub ZK
if ((mid - l) >= THRESHOLD) xI>HY9i)
mergeSort(data, temp, l, mid); KA/~q"N
else j|-{*t{/x
insertSort(data, l, mid - l + 1); ~rfUqM]I
if ((r - mid) > THRESHOLD) r"4&.&6
mergeSort(data, temp, mid + 1, r); ']C" 'b
else qsG}A
insertSort(data, mid + 1, r - mid); |s!<vvp]
[wkSY>Gu
for (i = l; i <= mid; i++) { 3UgPVCT
temp = data; ,R$U(,>_0
} cgV5{|P
for (j = 1; j <= r - mid; j++) { $?*XPzZ
temp[r - j + 1] = data[j + mid]; =WEWs4V5A
} P;bOtT --
int a = temp[l]; .VA'W16
int b = temp[r]; J;5G]$s
for (i = l, j = r, k = l; k <= r; k++) { SdXAL
if (a < b) { MA+{7 [
data[k] = temp[i++]; cv7.=*Kb;
a = temp; JWsOze8#
} else { D6fGr$(N%
data[k] = temp[j--]; &Db'}Y?x]
b = temp[j]; gg?O0W{
} p?,T%G+gqO
} M?v`C>j
} cnL@j_mb
@$7l
/** v$~ZT_"(9
* @param data 4c,{Js
* @param l 91oAg[@4G
* @param i ,R*YI
*/ &`B
Tw1u
private void insertSort(int[] data, int start, int len) { 7J|eL
yj
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3e?a$~9
} \Lz4ZZjSY
} `ZPV.u/
} a=r^?q'/
} eMOnzW|h
}&Ul(HR
堆排序: JPM W|JT
Clmz}F
package org.rut.util.algorithm.support; ?{(Jy*
P"s7}cl
import org.rut.util.algorithm.SortUtil; nC@UK{tVa
xG8z4Yu
/** w1,6%?p(O
* @author treeroot ?UBhM,;XK
* @since 2006-2-2 &d 6
* @version 1.0 +"3K)9H
*/ %Hpz^<`
public class HeapSort implements SortUtil.Sort{ W~?mr!`
K{__rO
/* (non-Javadoc) NGAjajB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;|D8"D6]
*/ ;T|hNsSt
public void sort(int[] data) { tW \q;_DSr
MaxHeap h=new MaxHeap(); *k
!zdV
h.init(data); Uq=!>C8
for(int i=0;i h.remove(); 8?[#\KgH1
System.arraycopy(h.queue,1,data,0,data.length); 6B&ERdoX
} kWxcB7)uk
%R-KkK<S
private static class MaxHeap{ FQO>%=&4
HyJ&;4rf
void init(int[] data){ T?EFY}f
this.queue=new int[data.length+1]; - %`iLu
for(int i=0;i queue[++size]=data; *:,y`!F=y
fixUp(size); _Bq [c
} m:C |R-IL
} vx4Jk]h+=L
:M\3.7q
private int size=0; I7HP~v~
jB0ED0)wX
private int[] queue; t4FaU7
5tcJTz
public int get() { &)F#cVB
return queue[1]; jbs)]fqC;
} 11BfJvs:
oWcBQ|
public void remove() { ;0Mg\~T~'
SortUtil.swap(queue,1,size--); > m##JzWLr
fixDown(1); NSDls@m
} l3;MjNB^V
file://fixdown PJ'.s
private void fixDown(int k) { 8BggK6X
int j; dH+oV`
while ((j = k << 1) <= size) { >@i{8AD
if (j < size %26amp;%26amp; queue[j] j++; 4qmaL+Q
if (queue[k]>queue[j]) file://不用交换 )/4U]c{-
break; H<C+rAIb
SortUtil.swap(queue,j,k); g/jlG%kI}
k = j; '/Ag3R
} ~/1eF7
} Fa9gr/.F,@
private void fixUp(int k) { |<w
Z;d
while (k > 1) { 4<l&cP
int j = k >> 1; tjt#2i8/
if (queue[j]>queue[k]) {aYCrk1
break; /+{1;}AT
SortUtil.swap(queue,j,k); O>Ao#_*hOb
k = j; <"}WpT
} 3`>nQ4zC
} _sI\^yZd
XE.Y?{,R$
} Q??nw^8Hi
\
0aa0=
} Q\{$&0McF
a!*K)x,"<
SortUtil: i~;Yrc%AEX
<|c[
#f
package org.rut.util.algorithm; r^$WX@ t&
X8| 0RU@f
import org.rut.util.algorithm.support.BubbleSort; :Tn1]a)f6
import org.rut.util.algorithm.support.HeapSort; c(!8L\69V}
import org.rut.util.algorithm.support.ImprovedMergeSort; EP}NT)z,{
import org.rut.util.algorithm.support.ImprovedQuickSort; F<|x_6a\
import org.rut.util.algorithm.support.InsertSort; 'qnnZE
import org.rut.util.algorithm.support.MergeSort; 2kQa3Pan
import org.rut.util.algorithm.support.QuickSort; 8[mj*^P
import org.rut.util.algorithm.support.SelectionSort; z! /
MBM
import org.rut.util.algorithm.support.ShellSort; iVqa0Gl+}
@Sd l~'"
/** ?R\:6x<
* @author treeroot 5$Aiez~tBq
* @since 2006-2-2 =~F.7wq*^
* @version 1.0 DTp|he
*/ 6n5>{X
public class SortUtil { F]7$Y
public final static int INSERT = 1; G,JK$j>*l
public final static int BUBBLE = 2; 3m59EI-p
public final static int SELECTION = 3; -3eHJccB
public final static int SHELL = 4; )kuw&SH,
public final static int QUICK = 5; E1V;eoK.D
public final static int IMPROVED_QUICK = 6; v
%GcNjZk5
public final static int MERGE = 7; wC4:OJ[d
public final static int IMPROVED_MERGE = 8; &W:R#/|
public final static int HEAP = 9; HE>sZ;
7(<z= F
public static void sort(int[] data) { .~yz1^ c
sort(data, IMPROVED_QUICK); [sweN]b6F
} n;,>Fv
private static String[] name={ s2M|ni=
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" U2)y fhI
}; @N,I}_ 9-
bRb+3au_x
private static Sort[] impl=new Sort[]{ ~f:jI1(}
new InsertSort(), |m /XGr
new BubbleSort(), =x3ZQA
new SelectionSort(), E#A}J:
new ShellSort(), L fx$M
new QuickSort(), |"XxM(Dm
new ImprovedQuickSort(), )Y:9sd8g7
new MergeSort(), r%^J3
new ImprovedMergeSort(), KWB;*P
C^
new HeapSort() #I|jFn9
}; yqKERdm
*cnxp-)ub
public static String toString(int algorithm){ AB1,G|L
return name[algorithm-1]; 1} h''p
} #}U*gVYe
^lYa9k
public static void sort(int[] data, int algorithm) { yk7 l{F
impl[algorithm-1].sort(data); Bk9? =
} XP'7+/A
56Gc[<nR
public static interface Sort { ("$ ,FRTQ:
public void sort(int[] data); __N#Y/e ]
} bcCCvV}6WZ
H^\2,x Z
public static void swap(int[] data, int i, int j) { sHi *\
int temp = data; `OWw<6`k
data = data[j]; m6D]
data[j] = temp; jQLiqi`
} c _faW
} "Ooc;xD3<