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。 @IZnFHN
插入排序: 7F.4Ga;
%A0/1{(
package org.rut.util.algorithm.support; ql~J8G9
u_Z+;{]Pj
import org.rut.util.algorithm.SortUtil; e&>2
n
/** F_P~x(X
* @author treeroot 3o/[t
* @since 2006-2-2 :[d9tm
* @version 1.0 b|(:[nB
*/ |JsZJ9W+J
public class InsertSort implements SortUtil.Sort{ xN'I/@ kb
a?oI>8*
/* (non-Javadoc) &uVnZ@o42
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RT8 ?7xFc
*/ G^@5H/)
public void sort(int[] data) { 9W);rL|5
int temp; 7a}k
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bvOq5Q6
} +
>!;i6|
} b\,+f n
} y8xE
6i
wb ;xRP"w
} qmP].sA
]eV8b*d6
冒泡排序: K:WDl;8(d
'Z]w^<
package org.rut.util.algorithm.support; g0E'g
I]_5}[I
import org.rut.util.algorithm.SortUtil; :rP=t ,
Zj
Z^_X3
/** iU:cW=W|M\
* @author treeroot ?\n>
AC
* @since 2006-2-2 \
B%+fw
* @version 1.0 V28M lP
*/ )O6>*wq
public class BubbleSort implements SortUtil.Sort{ z0Z%m@
7-V/RChBm
/* (non-Javadoc) !p/goqT~dY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .jK4?}]
*/ tT._VK]o&R
public void sort(int[] data) { Ew$C
;&9
int temp; *yGGBqd
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5`_SN74o
if(data[j] SortUtil.swap(data,j,j-1); qcRs$-J
} f?)-}\[IR{
} @E8+C8'
} >.D4co>
} [_:nHZb
)YI(/*+]
} A?0Nm{O;3v
O33`+UV"W
选择排序: ^kSqsT"
%]7d`/
package org.rut.util.algorithm.support; 2t1ZIyv3D
Kf-JcBsrT
import org.rut.util.algorithm.SortUtil; 7x8
yxE
(QiAisE
/** MfkN]\Jyw
* @author treeroot kSo"Ak!
* @since 2006-2-2 DIUjn;>k8
* @version 1.0 o,wUc"CE
*/ ;9'OOz|+1
public class SelectionSort implements SortUtil.Sort { oD@7
SF
'O-"\J\
/* /<BI46B\
* (non-Javadoc) :2)/FPL6
* d0 /#nz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ll?X@S
*/ (Awm9|.{+
public void sort(int[] data) { G]aOHJ:.
int temp; kvj#c
for (int i = 0; i < data.length; i++) { U`s{Jm
int lowIndex = i; W(/h Vt
for (int j = data.length - 1; j > i; j--) { HLi%%"'
if (data[j] < data[lowIndex]) { (4-CF3D
lowIndex = j; CTA3*Gn
} (uidNq
} hFBe,'3M
SortUtil.swap(data,i,lowIndex); ]}X
} #)VF3T@#'
} a-J.B.A$Z/
Yz93'HDB
} -D~%|).'
|vzl. ^"-
Shell排序: AT|3:]3E
v(%*b,^
package org.rut.util.algorithm.support; -H-~;EzU
A+?`?pOm&
import org.rut.util.algorithm.SortUtil; Uoix
BfiD9ka-z
/** ~7Ux@Sx;
* @author treeroot yEQs:v6L~
* @since 2006-2-2 /2VJX@h
* @version 1.0 FXU8[j0P_G
*/ Qe(:|q_
public class ShellSort implements SortUtil.Sort{ ku
M$UYTTX
h!9ei6
/* (non-Javadoc) _u9Jxw?F@Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }l9llu
*/ ]
@fk] ]R
public void sort(int[] data) { |(^PS8wG
for(int i=data.length/2;i>2;i/=2){ 11;zNjD|
for(int j=0;j insertSort(data,j,i); @`Su0W+.
} r#mx~OVkk
} -`6+UkOV[x
insertSort(data,0,1); +x}<IS8
} Fv`,3aNB
6;5Ss?ep
/** iDrZc
* @param data Q=yg8CQ
* @param j [)X\|pO&
* @param i Z;)%%V%o
*/ h2J
x]FJ
private void insertSort(int[] data, int start, int inc) { eh#(eua0/
int temp; vs{s_T7Mz]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R0-j5&^jju
} lU8Hd|@-
} b5n'=doR/I
} a7%]Y}$
|]*/R^1>2
} ;i+#fQO7Q
8DaL,bi*.
快速排序: ^sWT:BDh
o2\8OxcA
package org.rut.util.algorithm.support; R@rBEW&
d m%8K6|
import org.rut.util.algorithm.SortUtil; ;i:d+!3XwC
QkC(uS
/** q'MZ R'<@
* @author treeroot ;gr9/Vl
* @since 2006-2-2 IIx#2r
* @version 1.0 uY'HT|@:{
*/ ^K@C"j?M/
public class QuickSort implements SortUtil.Sort{ ` sU/& P
,$&&-p I]
/* (non-Javadoc) @Do= k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;sFF+^~L
*/ [j'X;tVX{
public void sort(int[] data) { c~
V*:$F
quickSort(data,0,data.length-1); $PHvA6D
} .#pU=v#/[
private void quickSort(int[] data,int i,int j){ UW
EV^ &"x
int pivotIndex=(i+j)/2; JqiP>4Uwm^
file://swap }JAG7L&{
SortUtil.swap(data,pivotIndex,j); 8Uxne2e
)53y
AyP
int k=partition(data,i-1,j,data[j]); du^J2m{f
SortUtil.swap(data,k,j); 8)I^ t81
if((k-i)>1) quickSort(data,i,k-1); (dSL7nel;L
if((j-k)>1) quickSort(data,k+1,j); @f_+=}|dc
[!OxZ!
} |ZBI *
/** #Mw8^FST
* @param data "snw4if
* @param i @F*%9LPv
* @param j AYx{U?0p
* @return )K
*/ pyvSwD5t
private int partition(int[] data, int l, int r,int pivot) { HyWCMK6b
do{ ?6Y?a2 |
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); D}/vLw :v
SortUtil.swap(data,l,r); a:6m7U)P#5
} Tnm.A?
while(l SortUtil.swap(data,l,r); M =r)I~
return l; 5XBH$&Td
} Ph>%7M%
+srGN5!
} ')3
bl3:
gB'6`'
改进后的快速排序: Q'0d~6n&{
G'A R`"F
package org.rut.util.algorithm.support; sON|w86B
b SU~XGPB
import org.rut.util.algorithm.SortUtil; @MCg%Afw
g}',(tPMZ
/** ~Jz6O U*z
* @author treeroot [hj6N*4y
* @since 2006-2-2 S^ \Vgi(
* @version 1.0 @s2y~0}#
*/ /I0%Z+`=
public class ImprovedQuickSort implements SortUtil.Sort { 3:i@II
TWFr
4-
private static int MAX_STACK_SIZE=4096; CizX<Cr}
private static int THRESHOLD=10; 3/n5#&c\4
/* (non-Javadoc) Jz e:[MYS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JFk
lUgg
*/ 9-*uPK]m9
public void sort(int[] data) { "LTad`]<Ro
int[] stack=new int[MAX_STACK_SIZE]; s!7y
k+pr \d ~
int top=-1; p=}Nn(
int pivot; 65Yv4pNL
int pivotIndex,l,r; C>*u()q>4h
?<'}r7D
stack[++top]=0; #4 pB@_
stack[++top]=data.length-1; SI-Ops~e
'SF<_aS(
while(top>0){ ^ (zYzd
int j=stack[top--]; W9GVt$T7
int i=stack[top--]; !d0kV,F:
7O-x<P;
pivotIndex=(i+j)/2; H~1jY4E
pivot=data[pivotIndex]; w&T9;_/
SNI)9k(T{
SortUtil.swap(data,pivotIndex,j); Hja3a{LH
nc|p )
file://partition 5"O.,H}
l=i-1; X_\otVh(D
r=j; '16b2n+F@#
do{ V[Ui/M!9Z
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,1o FPa{?
SortUtil.swap(data,l,r); j+
0I-p
} VS8Rx.?
while(l SortUtil.swap(data,l,r); ^,T(mKS
SortUtil.swap(data,l,j);
}?Ai87-{
-C?ZB}`
if((l-i)>THRESHOLD){ L0WN\|D
stack[++top]=i; b!5~7Ub.No
stack[++top]=l-1; XuM'_FN`A<
} 2!=f hN
if((j-l)>THRESHOLD){ *YuF0Yt
stack[++top]=l+1; 9m~p0 ILh
stack[++top]=j; *wB1,U{
} 5taT5?n2
e h?zNu2=
} P?of<i2E
file://new InsertSort().sort(data); ExL0?FemWV
insertSort(data); L>4"(
} i6Emhji
/** LuvY<~u
* @param data (V67`Z )
*/ .jjG(L
private void insertSort(int[] data) { JYbL?N
int temp; Vb]=B~ ^`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x)O!["'"
} 57']#j#"hj
} ;,:`1UI
} +*/Zu`kzX
z/@slT
} 9Y_HyOZ*GX
9N3o-=
归并排序: p]2128kqx
>V8-i`
package org.rut.util.algorithm.support; )cMh0SGcM1
jLHkOk5{:
import org.rut.util.algorithm.SortUtil; S k\K4
Ls+2Zbh
/** 68C%B9.b'
* @author treeroot |"CZ T#
* @since 2006-2-2 nazZ*lC
* @version 1.0 Gm^U;u}=f
*/ q ,]L$
public class MergeSort implements SortUtil.Sort{ 4yA+h2
0rs"o-s<
/* (non-Javadoc) N]=q|D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8\A#CQ5b
*/ ^KT Y?
public void sort(int[] data) { eiaFaYe\
int[] temp=new int[data.length]; XW)lDiJl
mergeSort(data,temp,0,data.length-1); !Pfr,a
} L2i_X@/
Pw`8Wj
private void mergeSort(int[] data,int[] temp,int l,int r){ nV/G8SeI
int mid=(l+r)/2; y'nK>)WG4
if(l==r) return ; B7E:{9l~s{
mergeSort(data,temp,l,mid); u[=r,^YQ
mergeSort(data,temp,mid+1,r); 0gP}zM73
for(int i=l;i<=r;i++){ X[BIA+6
temp=data; .:%0E`E
} tGE$z]1c@
int i1=l; yEoF4bt
int i2=mid+1; Ww+IWW@
for(int cur=l;cur<=r;cur++){ 2*l/3VW
if(i1==mid+1) bUdLs.:
data[cur]=temp[i2++]; Nkth>7*
else if(i2>r) W/bQd)Jvk
data[cur]=temp[i1++]; Ee%%d
else if(temp[i1] data[cur]=temp[i1++]; `MN4uC
else ,77d(bR<
data[cur]=temp[i2++]; _FU_Ubkr
} $AjHbU.I{
} Ed df2;-.
?(F6#"/E
} <7Or{:Sc90
;)z:fToh
改进后的归并排序: k&vz7Q`T
2,b(,3{`4:
package org.rut.util.algorithm.support; BLf>_bUk
h#
o6K#
import org.rut.util.algorithm.SortUtil; g63(E,;;J
XZ]uUP
/** vDhh>x(
* @author treeroot B:S>wFE(.
* @since 2006-2-2 i0kak`x0
* @version 1.0 }t=!(GOb}
*/ }"P|`"WW
public class ImprovedMergeSort implements SortUtil.Sort { b)5uf'?-
P90yI
private static final int THRESHOLD = 10; BWv^zi
7p16Hv7y~
/* IT7wT+
* (non-Javadoc) J~zUp(>K
* */^q{PsN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;dtA4:IRZ4
*/ %XoiVlT@:
public void sort(int[] data) { G kl71VX
int[] temp=new int[data.length]; %i9E @EV
mergeSort(data,temp,0,data.length-1); GxI!{oi2
} U}e!Wjrc
S.94edQ
private void mergeSort(int[] data, int[] temp, int l, int r) { lH x^D;m6
int i, j, k; RYQR(v
int mid = (l + r) / 2; t?-n*9,#S
if (l == r) 5z8d}
I
return; b"uu
if ((mid - l) >= THRESHOLD) TA`1U;c{n
mergeSort(data, temp, l, mid); ~"&|W'he[
else vkx7paY_
insertSort(data, l, mid - l + 1); JHM9
if ((r - mid) > THRESHOLD) 'qb E=
mergeSort(data, temp, mid + 1, r); t~EPn.
else ]7F=u!/`<C
insertSort(data, mid + 1, r - mid); r4XK{KHn
p;59?
for (i = l; i <= mid; i++) { y^,1a[U.
temp = data; 0y" $MC v
} rJT^H5!o"
for (j = 1; j <= r - mid; j++) { Bs_s&a>
temp[r - j + 1] = data[j + mid]; :bu/^mW[
} P}y +G|
int a = temp[l]; +>Qq(Y
int b = temp[r]; .
y-D16V
for (i = l, j = r, k = l; k <= r; k++) { %S@ZXf~:
if (a < b) { \K{0L
data[k] = temp[i++]; QQ*hCyw!
a = temp; XSe=sHEI
} else { 5T_n %vz
data[k] = temp[j--]; 7$vYo
_
b = temp[j]; \FbvHr,
} ?qLFaFt/
} Yq0| J
} q77;ZPfs8
jk; clwyz/
/** +,TRfP
Fb
* @param data 85 |OGtt
* @param l U0
Yll4E
* @param i j9x<Y]
*/ h5{'Q$Erl
private void insertSort(int[] data, int start, int len) { <;eW=HT+uq
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1#V_Z^OL
} +j`5F3@
} 3nIU1e
} fo*2:?K&
} H1pO!>M
q#Z@+(^
堆排序: J{p1|+h%
zU kgG61
package org.rut.util.algorithm.support; dUeN*Nq&(,
BOb">6C
import org.rut.util.algorithm.SortUtil; JgKO|VO
xjuN-
/** ?*G|XnM&
* @author treeroot c?f4Q,%|
* @since 2006-2-2 f}#~-.NGs
* @version 1.0 ~:rl=o }
*/ k$z_:X
public class HeapSort implements SortUtil.Sort{ (Y.k8";)`
G\/zkrxmv
/* (non-Javadoc) Zw
26
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IXMop7~
*/ ITE{@1
public void sort(int[] data) { Xk~D$~4<
MaxHeap h=new MaxHeap();
~9,,~db
h.init(data); #l\=}#\1Wb
for(int i=0;i h.remove(); EnKR%Ctw
System.arraycopy(h.queue,1,data,0,data.length); I+%[d^,
} x*/tyZg6
[64:4/<}
private static class MaxHeap{ Sxt"B
7{e
4c
void init(int[] data){ r_)' Ps
this.queue=new int[data.length+1]; P%V'4p c
for(int i=0;i queue[++size]=data; k_L7 kvpt
fixUp(size); ~RW+GTe
} |B?m,U$A!
} AP n| \
h0*!;Z7
private int size=0; u:6Ic)7'
59LZv-l
private int[] queue; )al]*[lY
VZp5)-!\
public int get() { 9tU]`f
return queue[1]; ''A_[J `>
} 2@n{yYwy
[`#CXq'
public void remove() { O%WIf__Q
SortUtil.swap(queue,1,size--); 1![!+X:w
fixDown(1); e/KDw
} !fV+z%:
file://fixdown Avge eJi
private void fixDown(int k) { O W_{$9U
int j; IA fcT!{
while ((j = k << 1) <= size) { 1*P~!2h
if (j < size %26amp;%26amp; queue[j] j++; du
$:jN\}
if (queue[k]>queue[j]) file://不用交换 "(3[+W{|
break; Q,,e+exbb5
SortUtil.swap(queue,j,k); i^/T
k = j; bQzZy5,
} 1jmjg~W
} )nC]5MXU
private void fixUp(int k) { lZd(emH@
while (k > 1) { 7cuE7"
int j = k >> 1; WA<v9#m
if (queue[j]>queue[k]) \#8D>i?m
break; AVsDt2A
SortUtil.swap(queue,j,k); euK5pA>L
k = j; mxvp3t \
} b<tNk]7
} S*,17+6dV
sf:,qD=z
} !4ocZmj\
KaLzg5is
} Z\(q@3 C
F#3Q_G^/
SortUtil: j"8ZM{aO
SpIv#?
package org.rut.util.algorithm; <v"R.<
z{%<<pZ
import org.rut.util.algorithm.support.BubbleSort; @f_Lp%K
import org.rut.util.algorithm.support.HeapSort; I
}a`0Y&{
import org.rut.util.algorithm.support.ImprovedMergeSort; ")1:F>
import org.rut.util.algorithm.support.ImprovedQuickSort; o@_q]/Mh
import org.rut.util.algorithm.support.InsertSort; \,'m</o~,
import org.rut.util.algorithm.support.MergeSort; Oz75V|D
import org.rut.util.algorithm.support.QuickSort; 0G(/Wb"/
import org.rut.util.algorithm.support.SelectionSort; RF?`vRZOe
import org.rut.util.algorithm.support.ShellSort; D5gFXEeh
s-NX o
/** eFB5=)ld
* @author treeroot ` _6C{<O
* @since 2006-2-2 H-!,yte
* @version 1.0 9sM!`Lz{
*/ (=FRmdeYl1
public class SortUtil { &Gc9VF]o
public final static int INSERT = 1; (fhb0i-
public final static int BUBBLE = 2; CmWeY$Jb
public final static int SELECTION = 3; xf'V{9*
public final static int SHELL = 4; bS{bkE>
public final static int QUICK = 5; "6("9"
public final static int IMPROVED_QUICK = 6; `{gHA+B
public final static int MERGE = 7; nd`1m[7MNu
public final static int IMPROVED_MERGE = 8; <q)#
public final static int HEAP = 9; K$z2YJ%
xEa\f[.An
public static void sort(int[] data) { lPe&h]@ >
sort(data, IMPROVED_QUICK); JB\UKZXw
} p0]=QH
private static String[] name={ mwO6g~@`
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" QDZWX`qw{
}; m%0p\Y-/
9v#CE!
private static Sort[] impl=new Sort[]{ k<z)WNBf
new InsertSort(), :S]\0;8]
new BubbleSort(), ,10=
new SelectionSort(), wC"FDr+
new ShellSort(), ~\r*
new QuickSort(), HGl|-nW>
new ImprovedQuickSort(), TbMW|0 #w
new MergeSort(), \a<wKTkn
new ImprovedMergeSort(), hy9\57_#
new HeapSort() @s*-%N^:[L
}; *nd! )t
UklUw
public static String toString(int algorithm){ _OYasJUMG
return name[algorithm-1]; l#&8x
} j<u pRS,$
v6|RJt?
public static void sort(int[] data, int algorithm) { g%o(+d
impl[algorithm-1].sort(data); OUE(I3_
} REQ\>UO_
iG$!6;w<
public static interface Sort { XMZ,Y7
public void sort(int[] data); {.`vs;U
} @?ebuj5{e
P|`8}|}a
public static void swap(int[] data, int i, int j) { zg>zUe
bA
int temp = data; "2!&5s,1p
data = data[j]; C-xr"]#]
data[j] = temp; @b\$ yB@z
} 1> ?M>vK
} n>z9K')