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。 ckdCd
J
插入排序: j%S}
T)pX
lE bV)&'
package org.rut.util.algorithm.support; tTq2AR|
+s+E!= s
import org.rut.util.algorithm.SortUtil; d<_IC7$u>
/** rb.:(d)T
* @author treeroot )\e0L/K@
* @since 2006-2-2 LK|rLoia:
* @version 1.0 xs)SKG*
*/ O8*yho
public class InsertSort implements SortUtil.Sort{ 1OFrxSg
z4[8*}
/* (non-Javadoc) /GP:W6:6z6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LqQ&4I
*/ V'N]u(^
public void sort(int[] data) { \ 0F
ey9c
int temp; 3 lKBwjW
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CTB
qX
} 30cb+)h(
} "f!H[F1~
} zM%2h:*+{
EzU=q
E
} ]D>\Z(b
pr\OjpvD
冒泡排序: 78'3&,+si
N,ihQB5
package org.rut.util.algorithm.support; Xj6?,J
s=&x%0f%
import org.rut.util.algorithm.SortUtil; !M7727
Coe%R(x5
/** )k 6z
* @author treeroot r [n vgzv@
* @since 2006-2-2 O3L:v{Kn
* @version 1.0 GZiN&}5e
*/ 0@jhNtL
public class BubbleSort implements SortUtil.Sort{ 3jM+j_nR
$Ehe8,=fj
/* (non-Javadoc) dEoW8 M#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >s%m\"|oh
*/ /n9,XD&)
public void sort(int[] data) { >@|XY<
int temp; sc# q03
for(int i=0;i for(int j=data.length-1;j>i;j--){ |/RZGC4
if(data[j] SortUtil.swap(data,j,j-1); u$V@akk
} mk`#\=GE
} UTxqqcqEny
} y=e|W=<D&
} Tml>>O
hLSas#B>
} oe1$;K>.7
WD'[|s\
选择排序: !X{>?.@~
\ci[<CP
package org.rut.util.algorithm.support; ET=-r
\yo)oIi[p
import org.rut.util.algorithm.SortUtil; Xa=oEG
zqGo7;;#
/** II}3w#r4
* @author treeroot X2C&q$8
* @since 2006-2-2 ~i9'9PHX@
* @version 1.0 6tT*b@/_o
*/ ty)~]!tA
public class SelectionSort implements SortUtil.Sort { %1PNP<3r0
Ub*O*nre
/* Xp_G9I,+
* (non-Javadoc) %b3s|o3An
* ^yVKW5x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *gL-v]V
*/
T.#Vma
public void sort(int[] data) { A{KF<Omu
int temp; ;{K/W.R
for (int i = 0; i < data.length; i++) { 2VA mL7)
int lowIndex = i; DH{^9HK
for (int j = data.length - 1; j > i; j--) { .KzU7
if (data[j] < data[lowIndex]) { ^Y+P(o$HM
lowIndex = j; 85]3y%f9
} HD{2nZT
} KMogwulG
SortUtil.swap(data,i,lowIndex); 4ai|*8.
} u|D|pRM-LT
} ;*409P
$Z{Xt*
} 2<8JY4]!]
' lMPI@C6r
Shell排序: `\5u/i'Ca!
?*2Uw{~}
package org.rut.util.algorithm.support; zDx*R3%
};s8xGW:k3
import org.rut.util.algorithm.SortUtil; 7xy[;
1;N5@0%p
/** E [b6k&A
* @author treeroot 1|/]bffg!c
* @since 2006-2-2 iF'qaqHWY4
* @version 1.0 !1cVg
ls|
*/ "kg;fF|
public class ShellSort implements SortUtil.Sort{ Tg|/UUn
a\?-uJ+
/* (non-Javadoc) 4-veO3&.h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zKX|m-i|2
*/ !;s5\91
public void sort(int[] data) { t*{BN>B
for(int i=data.length/2;i>2;i/=2){ r*XEne
for(int j=0;j insertSort(data,j,i); i*ErxWzu
} 68-2EWq
} g6~B|?!
insertSort(data,0,1); 'n4$dv%q
} X4Y!Z/b
T?V!%AqY:
/** v[I,N$:
* @param data $`Hb-
* @param j Fl0 :Z
* @param i :o+&>z
*/ 19.oW49Sw
private void insertSort(int[] data, int start, int inc) { ;ro%Wjg`}
int temp; :FqHMN
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R8![
$mkU
} X|Z2"*;b`
} #Qnl,lf
} {;| >Qn
)=@SA`J
} =9y&j-F
5x/LHsr=m
快速排序: rf]'VJg#3
?A`8c R=)I
package org.rut.util.algorithm.support; c#YW>(
qxW^\u!<
import org.rut.util.algorithm.SortUtil; "0]s|ys6<
\:@yfI@
/** 8Jb N&C
* @author treeroot T99\R%
* @since 2006-2-2 b!3Y<D*
* @version 1.0 {Jn*{5tZ>
*/ vm
Y*K
public class QuickSort implements SortUtil.Sort{ 1NQstmd{
JuTIP6
/G
/* (non-Javadoc) 4%9
+="
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1DT}_0{0Q
*/ 7r,h[9~e
public void sort(int[] data) { deVbNg8gs
quickSort(data,0,data.length-1); UG:S! w'
} $=GnoS
private void quickSort(int[] data,int i,int j){ TM2pE/P
int pivotIndex=(i+j)/2; %6eQ;Rp*
file://swap +(l(|lQy$
SortUtil.swap(data,pivotIndex,j); >4&s7][Q|
NT&skrzW
int k=partition(data,i-1,j,data[j]); >y{oC5S
SortUtil.swap(data,k,j); L92vb zP
if((k-i)>1) quickSort(data,i,k-1); D3xyJ
if((j-k)>1) quickSort(data,k+1,j); Q@w=Jt<
Tj
v)jD
} ]mSkjKw
/** t],5{UF
* @param data jNu`umS
* @param i Lx#CFrLQ*
* @param j .R5(k'g?
* @return LOX}
*/ KKJ)BG?qZ
private int partition(int[] data, int l, int r,int pivot) { ?f'iS#XL
do{ mX&!/U
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vS'l@`Eg]
SortUtil.swap(data,l,r); t`oH7)nut
} q@0g KC&U
while(l SortUtil.swap(data,l,r); *j"u~ NF
return l; FQW{c3%qZ
} *p Q'w
Vnvfu!>(
} vE<z0l
GZCX m+
改进后的快速排序:
0V[`zOO(o
1Q>D^yPI[
package org.rut.util.algorithm.support; Y `ySNC
E@%9u#
import org.rut.util.algorithm.SortUtil; Tw+V$:$$
nXFPoR)T
/** (`me}8
* @author treeroot xq-TT2}<L
* @since 2006-2-2 pf[m"t6G~
* @version 1.0 S&Szc0-|k
*/ Bt[Wh@
public class ImprovedQuickSort implements SortUtil.Sort { !Un&OAy.!
_Z{EO|L
private static int MAX_STACK_SIZE=4096; P'Diie
private static int THRESHOLD=10; 8k|&&3_[?
/* (non-Javadoc) NL}Q3Vv1.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }ofx?s}
*/ L-z9n@=8\
public void sort(int[] data) { Gw1Rp
int[] stack=new int[MAX_STACK_SIZE]; N&jHU+{OU
w+W!dM
int top=-1; Cyu= c1D ;
int pivot; fv+t%,++:
int pivotIndex,l,r; y 13Y,cz~B
(YC{BM}
stack[++top]=0; 0LD$"0v/C3
stack[++top]=data.length-1; L=# nnj-
=
iXHu
*g
while(top>0){ wJMk%N~R:
int j=stack[top--]; }eq*dr1`
int i=stack[top--]; 'Tbdo >y
3[;fO_ R
pivotIndex=(i+j)/2; ScCA8JgY
pivot=data[pivotIndex]; u|{(m_"H
CEHtr90P
SortUtil.swap(data,pivotIndex,j); B+r$_L&I
E hw2o-s^
file://partition !LAC_b
l=i-1; 5 ^867
r=j; -XNawpl`
do{ UEeq@ot/ 4
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); s9aa _Th
SortUtil.swap(data,l,r); u/ZV35z
} 4];<`
%
while(l SortUtil.swap(data,l,r); ,d`6
{ll
SortUtil.swap(data,l,j); YHQvx_0yP
tRu j}n+x
if((l-i)>THRESHOLD){ Uy98lv
stack[++top]=i; @t{`KB+
^
stack[++top]=l-1; "OWW -m
} -|g9__|@
if((j-l)>THRESHOLD){ )kk10AZV-E
stack[++top]=l+1; #w6ty<b;
stack[++top]=j; Hzc5BC
} 6tZ ak1=V
64LAZEQX
} Gr8%%]1!0
file://new InsertSort().sort(data); X`JoXNqm
insertSort(data); NE5H\
} Z66h
/** cyTBp58
* @param data Xc8
XgZk
*/ p>9|JMk
private void insertSort(int[] data) { 20Z=_},
int temp; d\-v+'d*+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E/@
} I#UL nSJ3
} F_.1^XM
} des.TSZ
9!?Ywc>0#
} 7xh91EU:4
U%r|hn3
归并排序: !%Bhg?
<i~=-Z(
package org.rut.util.algorithm.support; !D|c2
6]NaP_\0
import org.rut.util.algorithm.SortUtil; rd1EA|T
3-v&ktD&N'
/** dJ.up*aR
* @author treeroot P{+,?X\
* @since 2006-2-2 +F]=Z
* @version 1.0 Dp-j(F
*/ ;Z.sK-NJ4
public class MergeSort implements SortUtil.Sort{ a^g}Z7D'T
Z9q1z~qSQ
/* (non-Javadoc) ac%x\e$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LARMZoyi
*/ k@P?,r
public void sort(int[] data) { LZ}m;
int[] temp=new int[data.length]; p\22_m_wd
mergeSort(data,temp,0,data.length-1); 5$ &',v(
} utU;M*
5Zuk`%O
private void mergeSort(int[] data,int[] temp,int l,int r){ ^GnR1.ux
int mid=(l+r)/2; IC:>60A,]
if(l==r) return ; uNf97*~_
mergeSort(data,temp,l,mid); e7r3o,!
mergeSort(data,temp,mid+1,r); 9c{T|+]
for(int i=l;i<=r;i++){ 5;@2SY7,
temp=data; js;k,`
}
N<~LgH
int i1=l; 6%Pvh- ~_
int i2=mid+1; U8OVn(qV
for(int cur=l;cur<=r;cur++){ )nlFyWXh.
if(i1==mid+1) -unQ4G
data[cur]=temp[i2++]; O`Y@U?^N
else if(i2>r) 2$b JMx>
data[cur]=temp[i1++]; d+p^fBz
else if(temp[i1] data[cur]=temp[i1++]; KEjMxOv1
else c)Ne/E{!0
data[cur]=temp[i2++]; :Z.P0=
} HdRwDW@7=
} } 8[
cq~~a(IS
} ; sAe#b
YBL.R;^v
改进后的归并排序: 9L>73P{_
NAX`y2z
package org.rut.util.algorithm.support; S2
MJb
@$1jp4c
import org.rut.util.algorithm.SortUtil; "a-;?S&
K!(hj '0.
/** C8%MKNPd
* @author treeroot eq@-J+
* @since 2006-2-2 lE$(*1H
* @version 1.0
0:$pJtx"
*/ R-tZC9
@
public class ImprovedMergeSort implements SortUtil.Sort { ee{K5 G
gOr%N!5
private static final int THRESHOLD = 10; "gt1pf~y
0|ekwTx.
/* %$N,6}n
* (non-Javadoc) 5p ,HkV
* v >s,*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,z#S=I
*/ h:i FLS f
public void sort(int[] data) { K/_"ybR7
int[] temp=new int[data.length]; +&G]\WX<
mergeSort(data,temp,0,data.length-1); LTuT"}dT[
} %<`sDO6Q?
tAkv'.
private void mergeSort(int[] data, int[] temp, int l, int r) { a%/D~5Z
int i, j, k; n<1*cL:8B
int mid = (l + r) / 2; Hc-up.?v'v
if (l == r) |uI~}pSG
return; @|{8/sOq
if ((mid - l) >= THRESHOLD) \Nk578+AA
mergeSort(data, temp, l, mid); jhJ<JDJ?`
else .>S1do+
insertSort(data, l, mid - l + 1); DB}v..
if ((r - mid) > THRESHOLD) dptfIBYc+
mergeSort(data, temp, mid + 1, r); |.;]e[&
else RKp9[^/?
insertSort(data, mid + 1, r - mid); *S?'[PS]1
E{}J-_oS45
for (i = l; i <= mid; i++) { *P|~vCnr
temp = data; (}s& 84!
} cj[x%eK>
for (j = 1; j <= r - mid; j++) { egH,7f(yP
temp[r - j + 1] = data[j + mid]; 4q.yp0E
}
^Vf@J
int a = temp[l]; Yhjv[ 9
int b = temp[r]; 0O>M/ *W
for (i = l, j = r, k = l; k <= r; k++) { CR;E*I${
if (a < b) { EMpq+LrN
data[k] = temp[i++]; !tb!%8{~
a = temp; @|s$:;(=
} else { ))<vCfuz2
data[k] = temp[j--]; hj{)6dBX%
b = temp[j]; %V#MUi1
} XN{WxcZ
} 7]ySj<1
} R~eLEjezm
PF#<CF$ =
/** Ikw.L
* @param data ia-ht>F*;
* @param l 7{7Y[F0
* @param i 8(\J~I[^
*/ [Jj@A(Cz
private void insertSort(int[] data, int start, int len) { |'I>Ojm
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); KP
6vb@(6
} q8n@fi6
} !\'H{,G
} Ni|MTE]~
} Y[_|sIy*
m*YfbOhs#
堆排序: ;$e)r3r`LV
kR:kn:
package org.rut.util.algorithm.support; 1Kr$JIcd
wm Ie x
import org.rut.util.algorithm.SortUtil; a)c;z@r
Ab>Kf r#
/** G e5Yz.Qv
* @author treeroot cd=|P?Bi
* @since 2006-2-2 cB36w$n8
* @version 1.0 )=`DEbT
*/
U@CAQ?
public class HeapSort implements SortUtil.Sort{ '[HQ}Wvn
}q'IY:r
/* (non-Javadoc) #I*{_|}=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bsr]Z&9rrk
*/ ;#S]mso1
public void sort(int[] data) { nC!]@lA
MaxHeap h=new MaxHeap(); ZJc{P5a1J
h.init(data); *po
o.Zz
for(int i=0;i h.remove(); !]Qk?T~9-
System.arraycopy(h.queue,1,data,0,data.length); t&F:C
} f F)M'C
*9xxX,QT8Q
private static class MaxHeap{ 5f?GSHA}
d*VvQU8C
void init(int[] data){ j@^zK!mO
this.queue=new int[data.length+1]; XjP&
for(int i=0;i queue[++size]=data; VzIZT{
fixUp(size); !8T04988j
} f~PS'I_r
} NZ&ZK@h}.
QBH|pr
private int size=0; 'DNxc
{dh,sbl
private int[] queue; tm1&OY
}{j@q~w>$
public int get() { I )vR
return queue[1]; {.p;V
} l&qyLL2
w
ujkWVE'
public void remove() { @: =vK?8L
SortUtil.swap(queue,1,size--); 8~t8^eBg
fixDown(1); doe3V-if
} ` OgT"FdL!
file://fixdown
<#57q%
private void fixDown(int k) { X%znNx
int j; 4lpcJ+:o
while ((j = k << 1) <= size) { AXte&l=M
if (j < size %26amp;%26amp; queue[j] j++; BqHqS
if (queue[k]>queue[j]) file://不用交换 | 4}Y:d
break; %4F\#" A
SortUtil.swap(queue,j,k); \`["IkSg7
k = j; X>Q4 4FV!
} K(PSGlI f
} ]!P8 {xmb@
private void fixUp(int k) { On~KTt3Mp
while (k > 1) { WcS`T?Xa
int j = k >> 1; )8rF'pxI
if (queue[j]>queue[k]) %72(gR2Wa2
break; 8 >LDo"<
SortUtil.swap(queue,j,k); ~x/ka43
k = j; .w@B )f*
} 8#tuB8>
} _yR_u+5
oqysfLJ
} r-xP6
@x}^2FE
} nw+^@|4
febn?|@
SortUtil: Sy1O;RTn`
<-b9
)>
package org.rut.util.algorithm; &0y`Gt
[q3zs_nz
import org.rut.util.algorithm.support.BubbleSort; ezY^T
import org.rut.util.algorithm.support.HeapSort; |4
\2,M#
import org.rut.util.algorithm.support.ImprovedMergeSort; |ka/5o
import org.rut.util.algorithm.support.ImprovedQuickSort; @R%qP>_
import org.rut.util.algorithm.support.InsertSort; |39,n~"o&
import org.rut.util.algorithm.support.MergeSort; 8q{|nH
import org.rut.util.algorithm.support.QuickSort; {~FPvmj&
import org.rut.util.algorithm.support.SelectionSort; GiM-8y~
import org.rut.util.algorithm.support.ShellSort; 5Rs#{9YE
+^esL9RG:
/** Ri_2@U-
* @author treeroot ru 9@|FgAE
* @since 2006-2-2 ZYY2pY 1
* @version 1.0 G rU`;M"
*/ Q4LPi;{\
public class SortUtil { cAwqIihZ
public final static int INSERT = 1; eIF6f&
F
public final static int BUBBLE = 2; [?9 `x-Q
public final static int SELECTION = 3; :2==7u7v?
public final static int SHELL = 4; ]>Z9K@
public final static int QUICK = 5; hF@%k
;I
public final static int IMPROVED_QUICK = 6; g~.#.S ds
public final static int MERGE = 7; r5nHYV&7
public final static int IMPROVED_MERGE = 8; BgT ^
public final static int HEAP = 9; ;UpJ_y)n8\
GwP!:p|
public static void sort(int[] data) { '/03m\7
sort(data, IMPROVED_QUICK); 1|xe'w{
} D^m2iW;
private static String[] name={ 0?/gEr
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^zO{A ks
}; Cx/J_Ro#
R?:Q=7K
private static Sort[] impl=new Sort[]{ ~D|,$E tX4
new InsertSort(), V~/-e- 9u
new BubbleSort(), ,C><n
kx
new SelectionSort(), _L~ 3h
new ShellSort(), x=7:D
new QuickSort(), u=v-,Tw
new ImprovedQuickSort(), >FOCdlJ#
new MergeSort(), g&F$hm
new ImprovedMergeSort(), nM.g8d K
new HeapSort() [Z:P{yr
}; inO;Uwlv
l P=I0A-
public static String toString(int algorithm){ YQHpW>z
return name[algorithm-1]; ?uL-qsU
} =6:9y}~
579D
public static void sort(int[] data, int algorithm) { LkzA_|8:D
impl[algorithm-1].sort(data); XK/l1E3N
} fUWrR1
%Y;^$%X%_
public static interface Sort { Yu)GV7\2
public void sort(int[] data); SS`\_@ci
} ^1Fzs(#.
p\;8?x
public static void swap(int[] data, int i, int j) { Ekq(
int temp = data; b,+KXx
data = data[j]; #>:S&R?2t
data[j] = temp; (Ytr&gh;0
} m`8{arz2
} c\rP
-"C