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。 B &e'n<
插入排序: c Rv#aV
H>F j
package org.rut.util.algorithm.support; ~EM(*k._
n;LjKE
import org.rut.util.algorithm.SortUtil; .'bhRQY
/** F^CR$L& K
* @author treeroot NH<~BC]I
* @since 2006-2-2 -5Oy k,
* @version 1.0 /vs79^&
*/ R$bDj>8
public class InsertSort implements SortUtil.Sort{ O>d
[;Q
H'}6Mw%ra
/* (non-Javadoc) O=}d:yZb!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hv *XuT/
*/ NUFW
SL>
public void sort(int[] data) { 6&o?#l;|
int temp; Gn^m 541
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V1yP{XT=
} ` <u2 N
} Jwpc8MQ
} uC%mGZa
r@EHn[w
} 5zz">-Q !
wz>[CXpi_
冒泡排序: #^{%jlmHxJ
/[A#iTe
package org.rut.util.algorithm.support; K[S)e!\.
&WZ&Tt/)/
import org.rut.util.algorithm.SortUtil; z"-oD*ICw
PYTwyqS
/** ;;+h4O )
* @author treeroot #gVWLm<
* @since 2006-2-2 SqZ .}s
* @version 1.0 &gcZ4gpH
*/ 4 %V9
public class BubbleSort implements SortUtil.Sort{ PMT}fg
9"zp>VR
/* (non-Javadoc) *U-:2uf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n`V? n
*/ $\q.Zb
public void sort(int[] data) { CSY-{
int temp; _9'hmej
for(int i=0;i for(int j=data.length-1;j>i;j--){ qWJHb Dd
if(data[j] SortUtil.swap(data,j,j-1); V''fmWo7
} |g'ceG-
} U4qk<!
} R_b4S%jhx
} yMt:L)+
13pu{Xak
} i,t!17M:
`g<0FQA
选择排序: jig3M N
bd H+M?k
package org.rut.util.algorithm.support; I%NeCd
m\70&%v
import org.rut.util.algorithm.SortUtil; a#lytp
rBOH9L
/** Z5
7.+z<
* @author treeroot YFDOp*
* @since 2006-2-2 DTa!vg
* @version 1.0 <s%Ft
*/
: 76zRF
public class SelectionSort implements SortUtil.Sort { 8`6G_:&X
2A:&Cqo
/* WNt':w^_
* (non-Javadoc) w[ $oH^7
* m&s>Sn+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AD+OQLG]`
*/ &TL"Hd
public void sort(int[] data) { J*38GX+
int temp; aKE`nA0\B
for (int i = 0; i < data.length; i++) { ,U)&ny
int lowIndex = i; 8nWPt!U:
for (int j = data.length - 1; j > i; j--) { H>},{ z
if (data[j] < data[lowIndex]) { hy>0'$mU
lowIndex = j; )5n:UD{f[#
} Q @[gj:w
} O<#8R\v
SortUtil.swap(data,i,lowIndex); p5% %k-
} /nv+*+Q?d
} :dNJ2&kJ
,Xr`tQ<@
} 62MQ+H
wqT9m*VK
Shell排序: |3 Iug
78r0K 5=
package org.rut.util.algorithm.support; @4MQ021(
ooBBg@
import org.rut.util.algorithm.SortUtil; S^D7}
*?$M=tH
/** n`@dk_%yI
* @author treeroot &SNH1b#>E
* @since 2006-2-2 'sNiJ >
* @version 1.0 .Z#/%y3S
*/ ec/>LJDX7
public class ShellSort implements SortUtil.Sort{ 29CzG0?B
A\W)uwyN
/* (non-Javadoc) tCm]1ZgRW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f/s" 2r
*/ UR9\g(
public void sort(int[] data) { ,7k-LAA
for(int i=data.length/2;i>2;i/=2){ ALcPbr
for(int j=0;j insertSort(data,j,i); z"mpwmv5
} Go^TTL
} ><>%;HZ
insertSort(data,0,1); \ q3ui}-9
} *A4eYHn@
[S8*b^t4
/** MT:VQ>fC
* @param data UO#`Ak
* @param j QleVW
* @param i z@w}+fYO
*/ >]&Ow9-
private void insertSort(int[] data, int start, int inc) { u~2]$ /U
int temp; :Ocw+X3
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [~X&J#
} .gzfaxi
} ``I[1cC
} MJrPI a[pN
e$2P/6k>
} O1)\!=&
.
T,jb%uPcE
快速排序: sHMO9{[7H
VumM`SH
package org.rut.util.algorithm.support; k#u)+e.'
D6|-nl
import org.rut.util.algorithm.SortUtil; 0xO*8aKT
n\V7^N
/** biBMd(6
* @author treeroot jwBJG7\
* @since 2006-2-2 <pjxJ<1l
* @version 1.0 -%gEND-AP
*/ f8aY6o"i
public class QuickSort implements SortUtil.Sort{ f$n5$hJlQ
Pqw<nyC.
/* (non-Javadoc) ^6R(K'E}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U*E)y7MY
*/
Gk/cP`
public void sort(int[] data) { HZ2W`wo
quickSort(data,0,data.length-1); {:#nrD"
} >iRkhA=Vg
private void quickSort(int[] data,int i,int j){ &"I csxG
int pivotIndex=(i+j)/2; Dg"szJ-
file://swap K)se$vb6
SortUtil.swap(data,pivotIndex,j); FpU8$o~r{
Q;!rN)
int k=partition(data,i-1,j,data[j]); m{?f,Q=u@
SortUtil.swap(data,k,j); uwr7 .\7
if((k-i)>1) quickSort(data,i,k-1); mo] l_'
if((j-k)>1) quickSort(data,k+1,j); EApbaS}Up
5ya^k{`+ZO
} vp.?$(L^@/
/** {V[}#Mf
* @param data J|DZi2o
* @param i -W<1BJE
* @param j S4[#[w`=
* @return EwU)(UK
*/ MpGG}J[y
private int partition(int[] data, int l, int r,int pivot) { l"1D'Hk
do{ Ox&G
[
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); D>@NYqMF
SortUtil.swap(data,l,r); 5oSp/M
} :$,MAQ'9
while(l SortUtil.swap(data,l,r); o|xZ?#^h
return l; dFDf/tH
} i}P{{kMJ
rQ_@q_B.
} 8.8t$
m&gB;g3:
改进后的快速排序: ]d@>vzCO
0V21_".S
package org.rut.util.algorithm.support; `>`b;A4
|:JT+a1
import org.rut.util.algorithm.SortUtil; Xa.8-a"hz
{,+c
/** Ez0zk9
* @author treeroot KXK5\#+L
* @since 2006-2-2 dpscgW{M
* @version 1.0 )7NI5x^$
*/ $--+M
D29Q
public class ImprovedQuickSort implements SortUtil.Sort { 5B4/2q=
DyiJ4m}kh
private static int MAX_STACK_SIZE=4096; F]UH\1
private static int THRESHOLD=10; :S_]!'H
/* (non-Javadoc) &JqaIJh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >h#w~@e::
*/ Es)|#0m\x@
public void sort(int[] data) { Y$\|rD^f
int[] stack=new int[MAX_STACK_SIZE]; matna
c>{QTI:]
int top=-1; M3O !jN~
int pivot; 2M'dTXz
int pivotIndex,l,r; $*iovam>^]
]VLseF
stack[++top]=0; 3oMHy5
stack[++top]=data.length-1; ZIc.MNq
_UPfqC ?
while(top>0){ o!KDeY
int j=stack[top--]; dCTyfXou[=
int i=stack[top--]; OQB7C0+ &
Cd"{7<OyM4
pivotIndex=(i+j)/2; ]2qKc
pivot=data[pivotIndex]; BR@m*JGajz
URrx7F98
SortUtil.swap(data,pivotIndex,j); B6k<#-HAT
6X%g-aTs
file://partition =(D"(OsQ/
l=i-1; SnQT1U%
r=j; (H !iK,R
do{ l[ $bn!_e
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &
rab,I"
SortUtil.swap(data,l,r); 1VlU'qY
} fM4B.45j
while(l SortUtil.swap(data,l,r); I*3}erT
SortUtil.swap(data,l,j); z_fjmqa?
-HQbvXAS
if((l-i)>THRESHOLD){ {DQ%fneN4
stack[++top]=i; 8mKp PwG0
stack[++top]=l-1; o5?Y
} [%N?D#;
if((j-l)>THRESHOLD){ &tAYF_}
stack[++top]=l+1; -R:_o1"
stack[++top]=j; cS9jGD92
} @|DQZt
Coe/ 4!$M
} .Lna\Bv
file://new InsertSort().sort(data); eOE*$pH
insertSort(data); %8tE*3iUF
} @|vH5Pi
/** }\?9Prsd
* @param data 9DNp
*/ &~H ed_
private void insertSort(int[] data) { oIj=ba(n1
int temp; 3^+D,)#D^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U*$xR<8v
} @i; )`k5b
} ?e<2'\5v
} }ARA K ^%
K8_v5
} HT .*r6Y>g
yQN{)rv
归并排序: ^D$|$=|DH
\xCCJWek
package org.rut.util.algorithm.support; h&$h<zL[
yEI@^8]s
import org.rut.util.algorithm.SortUtil; ezp%8IZ;
?zf3Fn2y
/** zR^Gy"
* @author treeroot gYc]z5`
* @since 2006-2-2 Oti*"dV\::
* @version 1.0 wc4BSJa,19
*/ ]2wxqglh)
public class MergeSort implements SortUtil.Sort{ #Or;"}P>fB
o6k#neB>=.
/* (non-Javadoc) $zjdCg<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5?^L))
*/ T+F]hv'
public void sort(int[] data) { fx{8ERo
int[] temp=new int[data.length]; k~"Eh]38
mergeSort(data,temp,0,data.length-1); $ItjVc@U
} 73D<wMgZF
6`e7|ilh6
private void mergeSort(int[] data,int[] temp,int l,int r){ Z)#UCoK!c
int mid=(l+r)/2; a,c!#iyl3
if(l==r) return ; 9_?xAJ
mergeSort(data,temp,l,mid); "+ou!YK+
mergeSort(data,temp,mid+1,r); <ukBAux,D
for(int i=l;i<=r;i++){
>Q\Kc=Q|
temp=data; {7OHEArv
} c0gVW~I1
int i1=l; ;mG*Rad
int i2=mid+1; `.W2t5Y
for(int cur=l;cur<=r;cur++){ `x`[hJ?i
if(i1==mid+1) T`ibulp
data[cur]=temp[i2++]; (?na|yd
else if(i2>r) }|kFHodo
data[cur]=temp[i1++]; k||t<&`Ze
else if(temp[i1] data[cur]=temp[i1++]; S'jg#*$
else T$xBH
data[cur]=temp[i2++]; 56 3mz-
} tX{yR'Qhu
} pa[/6(
#hZ$;1.
} VI&x1C
FvxM
改进后的归并排序: _s=H|#l
_F;v3|`D@<
package org.rut.util.algorithm.support; J+u}uN@
,twx4r^
import org.rut.util.algorithm.SortUtil; esqmj#G
Fz%;_%j
/** e"nm< &
* @author treeroot b|d-vnYE
* @since 2006-2-2 R-13DVK
* @version 1.0 *9aJZWf>V
*/ *j%x
public class ImprovedMergeSort implements SortUtil.Sort { z~
cW,
N T`S)P*?
private static final int THRESHOLD = 10; 'u7-Qetj
gsk?
!D
/* -Uwxmy +
* (non-Javadoc) J?QS7#!%
* -b(DPte
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) { qNPhi
*/ m+TAaK
public void sort(int[] data) { pjWRd_h.
int[] temp=new int[data.length]; -zR<m
mergeSort(data,temp,0,data.length-1); +WH\,E
} &]nx^C8V;
FE~D:)Xj'?
private void mergeSort(int[] data, int[] temp, int l, int r) { P0m3IH)
int i, j, k; xh;V4zK@`
int mid = (l + r) / 2; e5|lz.o;
if (l == r) #).$o~1ht!
return; fjh|V9H
if ((mid - l) >= THRESHOLD) Ax;[ Em?I
mergeSort(data, temp, l, mid); ?Y(
else ,QY$:f<
insertSort(data, l, mid - l + 1); +1ICX
if ((r - mid) > THRESHOLD) pM?;QG;jA
mergeSort(data, temp, mid + 1, r); JE?rp1.
else Zse&{
insertSort(data, mid + 1, r - mid); $9)os7H7
}aZuCe_
for (i = l; i <= mid; i++) { >HP
`B2Q
H
temp = data; b(iF0U>&
} \i%'M%
for (j = 1; j <= r - mid; j++) { HN7CcE+l
temp[r - j + 1] = data[j + mid]; +[7~:e}DZ
} cgg6E
O(
int a = temp[l]; vrnvv?HPrR
int b = temp[r]; _%w680b'
for (i = l, j = r, k = l; k <= r; k++) { j9p6rD
if (a < b) { #De>EQ%
data[k] = temp[i++]; #,%bW[L<N
a = temp; `2mddx8
} else { Joow{75K
data[k] = temp[j--]; 2Y
vr|] \8
b = temp[j]; ge~@}iO@
} l4bytI{63
} AUnfhk@$
} ".?4`@7F\
XUqorE
/** Eb8pM>'qM
* @param data //R"ZE@d\
* @param l Hn|W3U
* @param i )4yP(6|lx
*/ 8dGsV5" *
private void insertSort(int[] data, int start, int len) { hyI7X7Hy
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (8duV
} 9LDv?kYr
} k9Pvh,_wp
} i?x gV_q;
} mMAN*}`O
?Nos;_/
堆排序: 8Zr;n`~
ul~ux$a
package org.rut.util.algorithm.support; &N~Eu-@b
Q_5l.M/9]
import org.rut.util.algorithm.SortUtil; Qs6<(zaqkt
,2@o`R.27
/** ^/f~\#R
* @author treeroot 7EJ2 On
* @since 2006-2-2 PTQ#8(_,
* @version 1.0 Ds9)e&yYrb
*/ ` 2lS@
public class HeapSort implements SortUtil.Sort{ n6/Ous
#@R0$x
/* (non-Javadoc) B
`(jTL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q+:y
*/ ZT0\V
]!B
public void sort(int[] data) { HI.*xkBXl&
MaxHeap h=new MaxHeap(); 66yw[,Y
h.init(data); -ss= c #
for(int i=0;i h.remove(); akj<*,
System.arraycopy(h.queue,1,data,0,data.length); 3$|/7(M&DA
} Pvxb6\G&d
-`O{iHfM|P
private static class MaxHeap{ f1 ;
G@]3EP
void init(int[] data){ Hfcpqa
this.queue=new int[data.length+1]; Jj4HJ9
for(int i=0;i queue[++size]=data; I2Xd"RHN
fixUp(size); @\K[WqF$$q
} vsY?q8+P
} WtT;y|W
&> sbsx\y
private int size=0; As:O|!F
*dl hRa
private int[] queue; Fr9/TI
8wU$kK
public int get() { p.DQ|?
return queue[1]; >)>f~ >
} gq=t7b
*1|7%*!8
public void remove() { ACszx\[K3
SortUtil.swap(queue,1,size--); =pH2V^<<#
fixDown(1); DIC*{aBf
} a<cwrDZ
file://fixdown ]Q^)9uE\D
private void fixDown(int k) { Cf%
qap#
int j; YT\`R
while ((j = k << 1) <= size) { ;%e&6
if (j < size %26amp;%26amp; queue[j] j++; T{{:p\<]_
if (queue[k]>queue[j]) file://不用交换 77>oQ~q
break; 8mI(0m'
SortUtil.swap(queue,j,k); 0At0`Q#
k = j; @8d 3
} m1$tf
^
} I^NDJdxd
private void fixUp(int k) { K~W(ZmB
while (k > 1) { EVmBLH-a
int j = k >> 1; 6^`iuC5
if (queue[j]>queue[k]) `#""JTA"
break; i]8O?Ab>?
SortUtil.swap(queue,j,k); %OQdUH4x
k = j; X9x`i
} W06aj ~7Z
} ?cU,%<r
Y_Yf'z1>[
} X8C7d6ca
I)HO/i6>3
} c -w #`
<BR^Dv07U
SortUtil: .. `I<2
#M-!/E
package org.rut.util.algorithm; SUS=sR/N
fG0 ?"x@>
import org.rut.util.algorithm.support.BubbleSort; RGW@@
import org.rut.util.algorithm.support.HeapSort; .9~j%]q
import org.rut.util.algorithm.support.ImprovedMergeSort; =LW!$p
import org.rut.util.algorithm.support.ImprovedQuickSort; N'
hT
import org.rut.util.algorithm.support.InsertSort; lY%I("2=
import org.rut.util.algorithm.support.MergeSort; (0-Ol9[
import org.rut.util.algorithm.support.QuickSort; \}Q=q$)
import org.rut.util.algorithm.support.SelectionSort; #2tmi1
ya
import org.rut.util.algorithm.support.ShellSort; _w^,j"
%>Kba M1b
/** v~$V
* @author treeroot (W1$+X
* @since 2006-2-2 ">V1II
7
* @version 1.0 pH'_k k
*/ ^<I(
public class SortUtil { >pq~ &)^u
public final static int INSERT = 1; VfU"%0x
public final static int BUBBLE = 2; (r|m&/
public final static int SELECTION = 3; 05d0p|},
public final static int SHELL = 4; `TBXJ(Y
public final static int QUICK = 5; qTsy'y;Z
public final static int IMPROVED_QUICK = 6; zdN[Uc+1Bd
public final static int MERGE = 7; b:==:d:0s
public final static int IMPROVED_MERGE = 8; z.Cj%N
public final static int HEAP = 9; g5V \R*{
&Ok1j0~~
public static void sort(int[] data) { #asg5 }
sort(data, IMPROVED_QUICK); @MSmg3&
} lQ8hY$
private static String[] name={ g'.OzD
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;1k&}v&
}; E&U_1D9=L<
>kXscbRL7
private static Sort[] impl=new Sort[]{ :i.@d?
new InsertSort(), L(y70T
new BubbleSort(), j|!,^._i
new SelectionSort(), 4BCPh:
new ShellSort(), aODh5
new QuickSort(), pz%s_g'
new ImprovedQuickSort(), Af3|l
new MergeSort(), sz9W}&(j
new ImprovedMergeSort(), bzr2Zj{4
new HeapSort() ]$smFF
}; 'ZbWr*bo
*HoRYCL
public static String toString(int algorithm){ 4]o+)d.`(
return name[algorithm-1]; Y'U1=w~E
} us.#|~i<h
)Q 2IYCj{
public static void sort(int[] data, int algorithm) { z,,"yVk`,
impl[algorithm-1].sort(data); >|taU8^|G}
} YR?Y:?(
T$;S
public static interface Sort { ';C'9k<P:
public void sort(int[] data); gk6f_0?X'
} (/:m*x*6
{JE [
public static void swap(int[] data, int i, int j) { IkCuw./
int temp = data; U1 _"D+XB
data = data[j]; VbX P7bZ
data[j] = temp; ]Lv3XMa
} )eZK/>L&
} ocGrB)7eD