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。 %a<N[H3NV@
插入排序: n7i;^=9mM
3+u11'0=t
package org.rut.util.algorithm.support; J
[J,
1"RO)&
import org.rut.util.algorithm.SortUtil; v*7}ux8
/** 'IY?7+[
* @author treeroot C|5eV=f)P
* @since 2006-2-2 ),v[.9!}:
* @version 1.0 }_u1'
*/ N&K:Jp
public class InsertSort implements SortUtil.Sort{ Li(}_
}i!hzkK#
/* (non-Javadoc) U=\ZeYK.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "
|[w.`
*/ [y&uc
public void sort(int[] data) { )B9 /P>c
int temp; +7mUX
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5|A"YzY#
} F|&%Z(@a
} .3CQFbHF
} +[`
)t/
jfU$qo!gi
} ~hb;kc3
wCEcMVT
冒泡排序: ;--p/h*.
i3vg7V.
package org.rut.util.algorithm.support; =>-W!Of
4*9BAv
import org.rut.util.algorithm.SortUtil; T[- %b9h>
ZfibHivz
/** 4xF}rm
* @author treeroot $wcTUl
* @since 2006-2-2 s{:Thgv,9
* @version 1.0 XZ"oOE0=
*/ ao"Z%#Jb~
public class BubbleSort implements SortUtil.Sort{ MM*9Q`cB
`-g$
0lm7
/* (non-Javadoc) EY@KWs3"H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7[1VFc#tf
*/ %3yrX>Js
public void sort(int[] data) { EX@Cf!GjN
int temp; #V.u[:mO
for(int i=0;i for(int j=data.length-1;j>i;j--){ zp\_5[qJ;
if(data[j] SortUtil.swap(data,j,j-1); Ckhwd
} j:$Z-s
} c_ u7O
\
} b?/Su<q
} {KSy I#
TA+#{q+a
} uT
Y G/O
CoV@{Pi
选择排序: @h\i<sh!^
RN$q,f[#
package org.rut.util.algorithm.support; X;v{,P=J
1pqYB]*u_
import org.rut.util.algorithm.SortUtil; q)PSHr=Z
D>kkA|>
/** &zPM#Q
* @author treeroot \}Kad\)
* @since 2006-2-2 ^y~oXS(
* @version 1.0 5a/3nsup5
*/ JEfhr
public class SelectionSort implements SortUtil.Sort { ~]BR(n
]0pI6"
/* /x/W>J2
* (non-Javadoc) T{
lm
z<g
* ?[
D6|gp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P.~sNd oJ
*/ fVZ_*'v
public void sort(int[] data) { HPK}Z|Vl
int temp; gIcPKj"8${
for (int i = 0; i < data.length; i++) { %Jn5M(myC
int lowIndex = i; *}LQZFrnX
for (int j = data.length - 1; j > i; j--) { $-)y59w"
if (data[j] < data[lowIndex]) { ;e~K<vMm;y
lowIndex = j; & aF'IJC
} [ HjGdC
} *JaFt@ x
SortUtil.swap(data,i,lowIndex); #elaz8 5
} 7p18;Z+6>X
} VE/~tT;
cH7D@p}
} 16I(S
BimM)4g
Shell排序: A3 zNUad;
5gPAX $j H
package org.rut.util.algorithm.support; 2K'}Vm+
uMP&.Y(
import org.rut.util.algorithm.SortUtil; {XYf"ONi
CY9`HQ1
/** t{/
EN)J
* @author treeroot W&^2Fb
* @since 2006-2-2 B Zw#ACU
* @version 1.0 R7By=Y!t
*/ ;"GI~p2~7
public class ShellSort implements SortUtil.Sort{ vGPaW YV
YCQ+9
/* (non-Javadoc) d>7bwG+k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VAR/"
*/ m;I;{+"u
public void sort(int[] data) { +<I1@C
for(int i=data.length/2;i>2;i/=2){ |m7`:~ow
for(int j=0;j insertSort(data,j,i); xE.=\UzJ
} c[0$8F>
} (.3L'+F
insertSort(data,0,1); l@YpgyqaL
} yc 5n
[G|2m_
/** gf2w@CVF>=
* @param data mwTn}h3N
* @param j UoxF00H@!
* @param i I@q>ES!1H
*/ PX'I:B]x*
private void insertSort(int[] data, int start, int inc) { Y<.F/iaH
int temp; XT_BiZ%l5O
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &f qmO>M
} LGCL*Qbsg
} "WYcw\@U
} (A&@
<
uf)W?`e~
} Bv@m)$9\+3
T[q-$8U
快速排序: I}v'n{5(
P [nWmY
package org.rut.util.algorithm.support; gkk <-j'
*Ucyxpu~$
import org.rut.util.algorithm.SortUtil; (\/HGxv
Yhw* `"X
/** iK%Rq
* @author treeroot -;`W"&`ss
* @since 2006-2-2 fZ g*@RR
* @version 1.0 g&E_|}u4
*/ kyo ,yD
public class QuickSort implements SortUtil.Sort{ f|^f^Hu:{
)#ujF~w>
/* (non-Javadoc) j'J*QK&Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8rpN2M3h
*/
610k#$
public void sort(int[] data) { tl^[MLQa
quickSort(data,0,data.length-1); GyPN)!X@.&
} "&+0jfLY+
private void quickSort(int[] data,int i,int j){ "DN `@
int pivotIndex=(i+j)/2; }b^lg&$(
file://swap G<dXJ ]\\
SortUtil.swap(data,pivotIndex,j); 7z,M`14
h B+ t
pa
int k=partition(data,i-1,j,data[j]); r#}Sy\
SortUtil.swap(data,k,j); 4QVd{
if((k-i)>1) quickSort(data,i,k-1); n|*V
8VaL
if((j-k)>1) quickSort(data,k+1,j); N_DgnZ7*
nz',Zm},
} v:0i5h&M
/**
]\e zES
* @param data gPi_+-@
* @param i Vi|jkyC8
* @param j rN~`4mZ
* @return e.GzGX
*/ FS}z_G|4]
private int partition(int[] data, int l, int r,int pivot) {
k
WtUj
do{ bcs!4
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >?'FH +2K
SortUtil.swap(data,l,r); "J1ar.li
} W<L6,
while(l SortUtil.swap(data,l,r); HKkf+)%)x
return l; D.6dPzu`
} &F}+U#H
7. .vaq#
} z>:7}=H0
jb2:O,+!
改进后的快速排序: a=FRJQ8S
9-^p23.@[j
package org.rut.util.algorithm.support; [mPdT^h
,f+5x]F?m
import org.rut.util.algorithm.SortUtil; jQ)>XOok
o4;Nb|kk9+
/** Q2NnpsA^6
* @author treeroot iL, XBoE
* @since 2006-2-2 %}!}2s.A
* @version 1.0 ODEXQl}R
*/ Ag6
(
public class ImprovedQuickSort implements SortUtil.Sort { eeZysCy+DY
F/SsiUBS
private static int MAX_STACK_SIZE=4096; RKkI/ Z0
private static int THRESHOLD=10;
,<^HB+{Wo
/* (non-Javadoc) u&XkbPZ%4c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d6EY'*0
*/ I)6Sbt JV^
public void sort(int[] data) { B?yt%f1
int[] stack=new int[MAX_STACK_SIZE]; N08n/u&cr,
Ib8i#D V
int top=-1; _%vqBr*
int pivot; znO00qX
int pivotIndex,l,r; ;
,<J:%s
*v ^"4
stack[++top]=0; PAU+C_P
stack[++top]=data.length-1; J*!:ar
`;CU[Ps?]
while(top>0){ je4&'vyU
int j=stack[top--]; o}+Uy
int i=stack[top--]; s@LNQ|'kO
s;7qNwYO
pivotIndex=(i+j)/2; 5MY}(w
pivot=data[pivotIndex]; qd~98FS
G=HxD4l
SortUtil.swap(data,pivotIndex,j); 4F,Ql"ae(
gQ=POJ=G
file://partition 6//FZ:q
l=i-1; asN
}
r=j; |;9 A{#zM
do{ 0nn]]B@l
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E(!6n= qR
SortUtil.swap(data,l,r); 5f'g3'
} 2HGD{;6>v{
while(l SortUtil.swap(data,l,r); p?$G>nkdq
SortUtil.swap(data,l,j); Tj21YK.mk
CQzjCRS
d
if((l-i)>THRESHOLD){ .k,Jt+
stack[++top]=i; aXbNDj
][
stack[++top]=l-1; k5t^s
} [AX"ne#M*
if((j-l)>THRESHOLD){ )@bH"
stack[++top]=l+1; (#B^Hyz!
stack[++top]=j; *rn]/w8ZW
} MkW1FjdP
vDW&pF_eI>
} 7<1fKrN?GF
file://new InsertSort().sort(data); _TOi
[GT
insertSort(data); PM-PP8h
} A?Nn>xF9X
/** <F)w=_%&
* @param data U8K&Q4^
*/ ] `B,L*m6
private void insertSort(int[] data) { UOu6LD/|h
int temp; 'EL ||
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w.D4dv_H
} I[=Wmxa?r
} Wg`+u
} h7EUIlh"
4\1wyN /}M
} 7}d$*C
13.{Y)
归并排序: ]HyHz9QkL
8lOZIbwS
package org.rut.util.algorithm.support; m)@Q_{=6M
0):uF_t<
import org.rut.util.algorithm.SortUtil; ]{|fYt_-
C|4U78f{
/** 56Sh
* @author treeroot JlC<MQ?
* @since 2006-2-2 66~e~F}z
* @version 1.0 AZxrJ2G
*/ n5bXQ
public class MergeSort implements SortUtil.Sort{ h4XcKv+
F2bm+0vOJ
/* (non-Javadoc) \|eJJC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #Rin*HL##
*/ 1Q&cVxA"\
public void sort(int[] data) {
09
int[] temp=new int[data.length]; 0rk u4T
mergeSort(data,temp,0,data.length-1); R=\v3m
} <G\
<QV8W
bbd0ocva
private void mergeSort(int[] data,int[] temp,int l,int r){ Az9X#h.vf
int mid=(l+r)/2; =cdh'"XN
if(l==r) return ; M4TrnZ1D}
mergeSort(data,temp,l,mid); *he7BUO
mergeSort(data,temp,mid+1,r); 2;~KL-h0TK
for(int i=l;i<=r;i++){ Az
U|p
temp=data; z@!^ow)`J
} B;eW/#`
int i1=l; ')C|`(hs
int i2=mid+1; `]K,'i{R
for(int cur=l;cur<=r;cur++){ d@-wi%,^
if(i1==mid+1) X$BXT
data[cur]=temp[i2++]; u=vh
Z%A]
else if(i2>r) uDILjOT
data[cur]=temp[i1++]; ]dd[WHA
else if(temp[i1] data[cur]=temp[i1++]; =MMCf0
else 'oC$6l'rQ
data[cur]=temp[i2++]; mYjf5
} -"F0eV+y
} j: <t
-{!&/;Z
} BwJNi6,
HKpD2M
改进后的归并排序: /ca(a\@R
+d =~LQ}*
package org.rut.util.algorithm.support; %h0D)6j
!loO%3_)
import org.rut.util.algorithm.SortUtil; {U(Bfe^a,
ab{;Z5O
/** @|^jq
* @author treeroot gC0;2
* @since 2006-2-2
+q7qK*
* @version 1.0 !2(.$}E
*/ _]P
a>8X*
public class ImprovedMergeSort implements SortUtil.Sort { pXssh
Bk+{}
private static final int THRESHOLD = 10; uLF\K+cz
m79m{!q$-
/* j^:b-:F
* (non-Javadoc) {3jm%ex
* *pmoLiuB>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iFY]0@yt
*/ Tm0?[[3hC
public void sort(int[] data) { dV'6m@C
int[] temp=new int[data.length]; zjzqKdy}F
mergeSort(data,temp,0,data.length-1); |P^ikx6f5
} PsacXZNs\N
^a: Saq-}
private void mergeSort(int[] data, int[] temp, int l, int r) { \z<ws&z3`$
int i, j, k; hn*}5!^
int mid = (l + r) / 2; hrUm}@d
if (l == r) PpI+@:p[
return; ,%&
LG],6
if ((mid - l) >= THRESHOLD) aU,0gvI(}
mergeSort(data, temp, l, mid); Mp}!+K
else t"jIfU>'a/
insertSort(data, l, mid - l + 1); 17?NR\Q
if ((r - mid) > THRESHOLD) 6yV5Yjs
mergeSort(data, temp, mid + 1, r); rerUM*0
else _:/Cl9~
insertSort(data, mid + 1, r - mid); Ih9O Rp7
My`josJ`Pb
for (i = l; i <= mid; i++) { XY&]T'A
temp = data; 1mvu3}ewx
} T +|J19
for (j = 1; j <= r - mid; j++) { lyMJW}T+>
temp[r - j + 1] = data[j + mid]; eUGmns
} eHfG;NsV/
int a = temp[l]; 0jl:Yzo&\
int b = temp[r]; OgzGkc@A
for (i = l, j = r, k = l; k <= r; k++) { 0%(4G83gw
if (a < b) { 3M`hn4)K
data[k] = temp[i++]; MZ >0K
a = temp; sWqPw}/3>
} else { o}j_eHl{
data[k] = temp[j--]; +3~Gc<OO
b = temp[j]; 0e7O#-
} @eAGN|C5
} `SSP53R(0
} P %U9S
J"a2
@S&
/** * 7zN
* @param data [xp~@5r'
* @param l [|m>vY!
* @param i !<['iM
*/ t6H2tP\AS
private void insertSort(int[] data, int start, int len) { }SJLBy0
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *n$m;yI
} qU
/Wg
} Npg5Z%+y
} F?+Uar|-a
} %3@RZe
s1*WK&@
堆排序: K_w0+oY a
gw}7%U`T9
package org.rut.util.algorithm.support; OA8b_k~
XQ4^:3Yc
import org.rut.util.algorithm.SortUtil; 2kmna/Qa6
r)Mx.`d!
/** L{o >D"
* @author treeroot #/
gme
* @since 2006-2-2 MIMPJXT#.
* @version 1.0 H?zCIue3
*/ 0I
ND9h.%
public class HeapSort implements SortUtil.Sort{ pN^G[
CH R?i1e
/* (non-Javadoc) MM58w3Mz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1PT_1[eAR
*/ 1H2u,{O
public void sort(int[] data) { ss M9t
MaxHeap h=new MaxHeap(); JD\-X(O
h.init(data); _R!!4Hp<Q
for(int i=0;i h.remove(); 4 *2>R8SX~
System.arraycopy(h.queue,1,data,0,data.length);
vGLb2Q
} kod_ 1LD
B#V4
private static class MaxHeap{ <xh'@592
] !*
void init(int[] data){ pa> 2JF*
this.queue=new int[data.length+1]; mYs->mg1
for(int i=0;i queue[++size]=data; KX`nHu;
fixUp(size); 9QM"JEu@
} MAhPO!e5.
} /n 3&e
2W-NCE%K)T
private int size=0; gSo(PW)
qZ]VS/5A
private int[] queue; z(#hL-{c
(R
2P<
Zr
public int get() { O=?X%m #
return queue[1]; {,mRMDEy
} Cot\i\]jv
arH\QPaka'
public void remove() { l$~bkVNL
SortUtil.swap(queue,1,size--); |"E9DD]{
fixDown(1); rls#gw
} Xq)%w#l5?
file://fixdown EF^=3
private void fixDown(int k) { Ol5xyj
int j; :H8L (BsI
while ((j = k << 1) <= size) { CH+&
if (j < size %26amp;%26amp; queue[j] j++; &``oZvuB
if (queue[k]>queue[j]) file://不用交换 WM l ^XZO
break; =X'7V}Q}
SortUtil.swap(queue,j,k); Gbm_xEPC
k = j; B]}V$*$\?
} +&8Ud8Q
} =sVt8FWGY
private void fixUp(int k) { 1Moh`
while (k > 1) { 8t
\>
int j = k >> 1; k_^/
if (queue[j]>queue[k]) ~TR|Pv
break; oi4Wxcj
SortUtil.swap(queue,j,k); +7OT`e
%q
k = j; x#VUEu]8
} u9~J1s<e
} O7*i;$!R
5VoiDM=\c
} j;'Wf[V
:R\v# )C
} GQBN-Qv
Rw8m5U
SortUtil: &V{,D))6[
O!Cu.9}
package org.rut.util.algorithm; ,PxQ[CGg
)#Bfd(F
import org.rut.util.algorithm.support.BubbleSort; &bK$!8Z
import org.rut.util.algorithm.support.HeapSort; PzkXrDlB7
import org.rut.util.algorithm.support.ImprovedMergeSort; *9wHH-#
import org.rut.util.algorithm.support.ImprovedQuickSort; Q8:ocEhR
import org.rut.util.algorithm.support.InsertSort; DN0b.*[`3
import org.rut.util.algorithm.support.MergeSort; DCUq.q)
import org.rut.util.algorithm.support.QuickSort; *lO+^\HXD
import org.rut.util.algorithm.support.SelectionSort; SnU{ZGR>sP
import org.rut.util.algorithm.support.ShellSort; Xe+FMbBco
?{")Wt
/** BQg]$Tr?
* @author treeroot E1g$WhXIS
* @since 2006-2-2 dF]8>jBOL
* @version 1.0 H2cc).8"
*/ +N_%|!F-c
public class SortUtil { [
Ulo; #P
public final static int INSERT = 1; %;?3A#
public final static int BUBBLE = 2; +[`%b3N k
public final static int SELECTION = 3; XjU; oh4:.
public final static int SHELL = 4; XLxr~Yo
public final static int QUICK = 5; _S1uJ~j;E
public final static int IMPROVED_QUICK = 6; 9%6`ZS~3
public final static int MERGE = 7; ^u,x~nPXg
public final static int IMPROVED_MERGE = 8; XS/TYdXB8
public final static int HEAP = 9; Jl ?Q}SB
f'U]Ik;Jy
public static void sort(int[] data) { J< M;vB)
sort(data, IMPROVED_QUICK); 0yNlf-O
} &X(-C9'j
private static String[] name={ L9)&9
/f
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "Fiv
]^
}; /d'u1FnA=
wv-8\)oA
private static Sort[] impl=new Sort[]{ JY16|ia
new InsertSort(), )_?$B6hf,&
new BubbleSort(), q(W@=-uDK
new SelectionSort(), 1[]cMyV
new ShellSort(), ZeZwzH)BD
new QuickSort(), hNy S
new ImprovedQuickSort(), k#n=mm'N9
new MergeSort(), %-CC_R|0$
new ImprovedMergeSort(), pnU
g:R@
new HeapSort() vxx3^;4p
}; a=dN.OB}F7
DM9 5Il[/
public static String toString(int algorithm){ p2K9R4
return name[algorithm-1]; H"l'E9k.&p
} JhcS
Y)`+u#`
R
public static void sort(int[] data, int algorithm) { y]_DW6W
impl[algorithm-1].sort(data); }d(6N&;"zN
} aJ5R0Y,
rpmDr7G
public static interface Sort { }0G Ab2
public void sort(int[] data); i}19$x.D`
} BR'|hG
KX`,7-
public static void swap(int[] data, int i, int j) { 2 OTpGl
int temp = data; d,)L, J
data = data[j]; $BY{:#a]
data[j] = temp; rL=$WxdPU
} %}[??R0
} *)<tyIHd