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。 lVOu)q@l7g
插入排序: p]T<HGJ P
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package org.rut.util.algorithm.support; ]:>,A@7
i4JqT \q
import org.rut.util.algorithm.SortUtil; Fz#X=gmG
/** bKg8rK u
* @author treeroot 2i;7{7
* @since 2006-2-2 :cB=SYcC%
* @version 1.0 oVFnlA
*/ ;oZ)Wt
public class InsertSort implements SortUtil.Sort{ R;,g1m|]
0:w"M<80
/* (non-Javadoc) eET&pP3Rp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AIMSX]m
*/ R^?/' dr
public void sort(int[] data) { 2c6g>?
int temp; #Cpd9|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @+3kb.P%7
} .p0Clr!
}
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} v~QHMg
Xtt?]
} wO?{?+I`q
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冒泡排序: c\a_VRN>r
svxw^0~a
package org.rut.util.algorithm.support; 8NyJc"T<.
#@<9S{F
import org.rut.util.algorithm.SortUtil; kuyjnSo9i
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/** _SW3_8SuM.
* @author treeroot ;r c`OZyE
* @since 2006-2-2 i&{DOI%w
* @version 1.0 k0Ol*L!p
*/ 2hzsKkrA
{
public class BubbleSort implements SortUtil.Sort{ sMu]
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/* (non-Javadoc) '%q$`KDb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (L^]Lk
x)
*/ S$QG.K:<!
public void sort(int[] data) { i3rH'B-I.
int temp; eek7=Z
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0a80 LAK
if(data[j] SortUtil.swap(data,j,j-1); th;{V%:LW
} *98$dQR$
} 6I@h9uIsze
} "[y-+)WTG
} g+J-Zg6
0u\GO;
} y;s`P.
E?_Z`*h
选择排序: PLK3v4kVM!
dqN5]Sb2B
package org.rut.util.algorithm.support; ]]zPq<b2
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import org.rut.util.algorithm.SortUtil; Ii G6<|d8H
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/** [VE8V-
* @author treeroot s&RVJX>Rt
* @since 2006-2-2 h*- Pr8
* @version 1.0 z CvKDlL
*/ zux{S;:?
public class SelectionSort implements SortUtil.Sort { )jt #=9ZQ
A!h`]%0B
/* D8$G `~hD
* (non-Javadoc) @nux9MX<9
* v%q0OX>9X"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <yd{tD$A*
*/ 3\XU_Xs(]
public void sort(int[] data) { *s:(jDlv
int temp; r-Pkfy(
for (int i = 0; i < data.length; i++) { H '
int lowIndex = i; 3f,hw5R
for (int j = data.length - 1; j > i; j--) { /pT=0=
if (data[j] < data[lowIndex]) { B]Thn
lowIndex = j; p>4-s, W
} zx)z/1
} +mn,F};
SortUtil.swap(data,i,lowIndex); Le\?+h42>
} PpAu!2lt9
} "vOwd.(?N
LU={")TdQ
} ]"?)Z
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Shell排序: |aVn&qK
R=QZgpR
package org.rut.util.algorithm.support; hpD!2 K3>
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import org.rut.util.algorithm.SortUtil; NA ~Vg8
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/** R}!:'^
* @author treeroot d'NIV9P`j]
* @since 2006-2-2 UWd=!h^dt
* @version 1.0 ui/a|Q
*/ LGw$v[wb
public class ShellSort implements SortUtil.Sort{ bcE._9@@
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/* (non-Javadoc)
Pu" P9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1pgU}sRk
*/ (&F
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public void sort(int[] data) { 'Wmx)0)
for(int i=data.length/2;i>2;i/=2){ \RC'XKQ*n
for(int j=0;j insertSort(data,j,i); 5Ou`z5S\k
} woK&q 7Vn
} RO'7\xvn
insertSort(data,0,1); }E50>g
} h eV=)8
;z $(nhJ
/** hvsWs.;L'
* @param data ?fi,ifp*|l
* @param j ]QlwR'&j/n
* @param i huh6 t !
*/ b?tB(if!I
private void insertSort(int[] data, int start, int inc) { P*3BB>FO
int temp; `xqr{lhL
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >JFO@O5
}
/} b03
} CTq&-l:f
} Nh_Mz;ITuu
B#Vz#y
} r{L>
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快速排序: vunHNHltW0
jtW!"TOY
package org.rut.util.algorithm.support; S.-TOE
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import org.rut.util.algorithm.SortUtil; #W4dkCd(pF
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/** L.*M&Ry
* @author treeroot gG(fQ
89U"
* @since 2006-2-2 [\v}Ul
* @version 1.0 "Q@ronP(~
*/ -g*4(w
public class QuickSort implements SortUtil.Sort{ 1mOh{:1u
Y)* #)f
/* (non-Javadoc) EyJJ0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (X\@t-8
*/ \fz<.l]
public void sort(int[] data) { A$Hfr8w1u
quickSort(data,0,data.length-1); R{<kW9!
} Q ayPo]O
private void quickSort(int[] data,int i,int j){ jaII r06
int pivotIndex=(i+j)/2; v3~? ;f,l
file://swap
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SortUtil.swap(data,pivotIndex,j); }ppN k:B
<Tzrj1"Q3
int k=partition(data,i-1,j,data[j]); D9^h;
8
SortUtil.swap(data,k,j); r*2+xDoEi
if((k-i)>1) quickSort(data,i,k-1); w0rRSD4S8B
if((j-k)>1) quickSort(data,k+1,j); f
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G\2CR*
} 4'/nax$Bx;
/** ls\WXCH
* @param data {Aw#?#GPW
* @param i iT3BF"ZqBO
* @param j /R]U}o^/(%
* @return tdBm
(CsN
*/ N
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private int partition(int[] data, int l, int r,int pivot) { y" RF;KW>
do{ $p#Bi-&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); AG`L64B
SortUtil.swap(data,l,r); A5c%SCq;
} KX ,S
while(l SortUtil.swap(data,l,r); ;=)k<6
return l; wh$sn:J
} naG=Pq<
?+@n3]`0
} Lb:g4A"
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改进后的快速排序: @ym v< Mo
QwW&\h[8?
package org.rut.util.algorithm.support; y-'$(x
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import org.rut.util.algorithm.SortUtil; :~&~y-14
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/** \)#kquH/l
* @author treeroot 1H?
u Qy
* @since 2006-2-2 I| w"/"U
* @version 1.0 Gw/Pk4R
*/ S 6@u@C
public class ImprovedQuickSort implements SortUtil.Sort { 4KhV|#-;k
i1ixi\P{0
private static int MAX_STACK_SIZE=4096; 6tgt>\y
private static int THRESHOLD=10; -`*a'p-=
/* (non-Javadoc) V#2+"(7h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O,{6*[)@
*/ GZN ^k+w
public void sort(int[] data) { eVjBGJ=2e
int[] stack=new int[MAX_STACK_SIZE]; <=zQ NBtx
n\Z!ff/
int top=-1; _<n~n]%
int pivot; ZCMw3]*
int pivotIndex,l,r; w1EXh
-;s|
stack[++top]=0; xI #9
stack[++top]=data.length-1; Qp)v?k ]
oR)Jznmi}
while(top>0){ @Q)OGjaq
int j=stack[top--]; @'#,D!U
int i=stack[top--]; U dT*E: 6
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pivotIndex=(i+j)/2; g1/:Q%R,
pivot=data[pivotIndex]; l%k\JY-
7OcWC-<
SortUtil.swap(data,pivotIndex,j); q<xCb%#Jl
[%"|G9
file://partition |GdUL%1hnC
l=i-1; n,vct<&z@
r=j; xK *b1CB
do{ Qf~vZtJ+J
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~Z\8UsVN
SortUtil.swap(data,l,r); ^cOUQ33
}
sJB;3"~
while(l SortUtil.swap(data,l,r); :KQ~Cb
SortUtil.swap(data,l,j); I:R[;TB?y
?ZV/U!y
if((l-i)>THRESHOLD){ 6KXtcXQ
stack[++top]=i; /hr7NT{e%v
stack[++top]=l-1; hQ,ch[j'
} "0"nw2g?
if((j-l)>THRESHOLD){ [<Mx2<8f
stack[++top]=l+1; 2%DSUv:H%
stack[++top]=j; ($q-_m
} "Gsc;X'id
*>Ns_su7W
} i?p$H0bn
file://new InsertSort().sort(data); |kyX3~
insertSort(data); ~8q)^vm>f?
} [+rfAW>p}
/** >6ni")Q9
* @param data dPW#C5dm
*/ tqz3zIQ
private void insertSort(int[] data) { 3+)J
@(a
int temp; 3]5^r}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z)I+@2
} 29;?I3<
*
} G?L HmTHg
} t|w_i-&b,
Kf bb)?
} ak7bJ~)X=
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归并排序: [`ebM,W
66g9l9wm(
package org.rut.util.algorithm.support; S5gyr&dm
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import org.rut.util.algorithm.SortUtil; u0JB\)(-/h
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/** B{QBzx1L9c
* @author treeroot T;Lkaxsn
* @since 2006-2-2 w#ZoZZ wh
* @version 1.0 H9'$C/w
*/ &W|[r(
public class MergeSort implements SortUtil.Sort{ 3atBX5
{ }:#G
/* (non-Javadoc) 1h^:[[!c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m]'#t)B_m
*/ y*4=c_Z
public void sort(int[] data) { :vmH]{R
int[] temp=new int[data.length]; GSoX<*i
mergeSort(data,temp,0,data.length-1); RVZ")Z(
} $h+1u$po
J4k=A7^N
private void mergeSort(int[] data,int[] temp,int l,int r){ QVv#fy1"6
int mid=(l+r)/2; P}Gj%4/G
if(l==r) return ; h=W:^@G
mergeSort(data,temp,l,mid); aZH:#lUlj
mergeSort(data,temp,mid+1,r); bZ dNibN
for(int i=l;i<=r;i++){ @3>u@
temp=data; f/ U`
} W\>fh&!)
int i1=l; Cz9xZA{[M
int i2=mid+1; mUNn%E:7@{
for(int cur=l;cur<=r;cur++){ q_MPju&*
if(i1==mid+1) [8Y:65
data[cur]=temp[i2++]; _'#n6^Us<
else if(i2>r) ayn) 5q/z
data[cur]=temp[i1++]; :">!r.Q
else if(temp[i1] data[cur]=temp[i1++]; Uf1!qP/H?
else [zH:1Zhl&
data[cur]=temp[i2++];
ncZ+gzK|"
} 3OrczJ=[UF
} F8nYV
>"??!|XG^
} e6`Jbu+J<f
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改进后的归并排序: 0.\/\V:H6
NG=@ -eu
package org.rut.util.algorithm.support; `"Jj1O@
#Vnkvvv
import org.rut.util.algorithm.SortUtil; kDEXN
x,'(5*
/** &u]8IEv}u
* @author treeroot } +TORR?
* @since 2006-2-2 a[>/h3
* @version 1.0 Q0)#8Rcm
*/ oTEL?hw5
public class ImprovedMergeSort implements SortUtil.Sort { uF X#`^r`
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private static final int THRESHOLD = 10; q}b
dxa
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/* ?1*cO:O
* (non-Javadoc) 8Q.T g.
* ])[[ V!1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OyStq i
*/ )\1QJ$-M&
public void sort(int[] data) { KKb,d0T[
int[] temp=new int[data.length]; IY_iB*T3jt
mergeSort(data,temp,0,data.length-1); ]P9l jwR
} B |5]Jm]
IDad9 Bx
private void mergeSort(int[] data, int[] temp, int l, int r) { ]vz%iv_
int i, j, k; a1g,@0s
int mid = (l + r) / 2; gIo@Pm
if (l == r) e+=y*OmQ
return; ,L|%"K]yM
if ((mid - l) >= THRESHOLD) fnpYT:%fG
mergeSort(data, temp, l, mid); Y@NNrGDkT*
else \e:7)R2<!x
insertSort(data, l, mid - l + 1); wVvF^VHV^
if ((r - mid) > THRESHOLD) A9[ F
mergeSort(data, temp, mid + 1, r); R#s)r
else E7WK
(
insertSort(data, mid + 1, r - mid); >Ifr [
I:E`PZ
for (i = l; i <= mid; i++) { MH
=%-S
temp = data; FDv<\2+ c
} aFl;BhM
for (j = 1; j <= r - mid; j++) { L\37xJo
temp[r - j + 1] = data[j + mid]; ^gN6/>]qrY
} @T@<_ ?)
int a = temp[l]; oro$wFxJO
int b = temp[r]; [NF'oRRD9s
for (i = l, j = r, k = l; k <= r; k++) { ^dI424
if (a < b) { kPKB|kP\
data[k] = temp[i++]; ! :Y:pu0
a = temp; *Hg>[@dP0
} else { 7dN*lks
data[k] = temp[j--]; S:u:z=:r
b = temp[j]; Ve8=b0&Y#j
} &r[`>B{tP
} <S5BDk
} UgRhWV~f0
|{&{
/** d}OTO10
* @param data gLb`pCo/
* @param l 2ElJbN#
* @param i ~b(i&DVK
*/ @tF\p
private void insertSort(int[] data, int start, int len) { bc*X/).
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <NHH^M\N
} vXev$x=w-
} DMs,y{v
} b
k~(^!R
} N(O9&L*4fm
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E
堆排序: Vo4,@scG
j SHk{T!J
package org.rut.util.algorithm.support; .L+6 $8m
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import org.rut.util.algorithm.SortUtil; $&Gu)4'+
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/** LY+@o<>
* @author treeroot C2.HMgL
* @since 2006-2-2 K>
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* @version 1.0 CVDV)#JA
*/ 36.Z0Z1'F>
public class HeapSort implements SortUtil.Sort{ ke!?BZx
We)xB
/* (non-Javadoc) oph}5Krd)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;^+\K-O]c
*/ .7^c@i[
public void sort(int[] data) { .4S.>~^7
MaxHeap h=new MaxHeap(); n#mA/H;wV
h.init(data); =WyDp97@+
for(int i=0;i h.remove(); %Wg'i!?cB
System.arraycopy(h.queue,1,data,0,data.length); C:GK,?!Jn'
} 9U7nKJ+iby
,t3wp#E2#
private static class MaxHeap{ G%BjhpL
2L!u1
void init(int[] data){ V#v`(j%
this.queue=new int[data.length+1]; b}\N;D.{
for(int i=0;i queue[++size]=data; },uF4M.K
fixUp(size); +20G>y=+
} RXNn[A4xfY
} fAF1"4f
S2E8Gq9
private int size=0; GeI-\F7b
rr/B=O7
private int[] queue; XWnVgY s
5CuuG<0
public int get() { X3(tuqmi
return queue[1]; a,Sw4yJ!Q
} =NpYFKmMhV
FW.7'7G@n
public void remove() { z Eq GD2"
SortUtil.swap(queue,1,size--); 57aXQ8u{
fixDown(1); K)6rY(x
>
} ~W*FCG#E
file://fixdown E~,F
private void fixDown(int k) { "7U4'Y:E
int j; 1f%1*L0>@
while ((j = k << 1) <= size) { &)2i[X
if (j < size %26amp;%26amp; queue[j] j++; 0mpX)S
if (queue[k]>queue[j]) file://不用交换 #akpXdXs
break; -N6f1>}pE
SortUtil.swap(queue,j,k); ;
a/X<
k = j; %) /s; Q,
} t9nqu!);
} [v7F1@6b
private void fixUp(int k) { wrviR
while (k > 1) { ^/uA?h:]\
int j = k >> 1; <5d~P/,
if (queue[j]>queue[k]) FO+Zue.RS
break; !NIhx109q
SortUtil.swap(queue,j,k); fJ5iS
k = j; j_/>A=OD
} *lYVY)L
} ?fiIwF)
=MSr/ O2
} z-BXd
$:BKzHmg
} l~1Oef#y
&]g}u5J!=
SortUtil: -O1>|y2rU
au N6prGe
package org.rut.util.algorithm; ,bXe<L)
}bs+-K
import org.rut.util.algorithm.support.BubbleSort; r~E=4oB7
import org.rut.util.algorithm.support.HeapSort; XywE1}3
import org.rut.util.algorithm.support.ImprovedMergeSort; #[,IsEpDO1
import org.rut.util.algorithm.support.ImprovedQuickSort; %]Fd[pzF
import org.rut.util.algorithm.support.InsertSort; C\\~E9+
import org.rut.util.algorithm.support.MergeSort; :=}BN
import org.rut.util.algorithm.support.QuickSort; ?TM,Q
import org.rut.util.algorithm.support.SelectionSort; %!]@J[*1
import org.rut.util.algorithm.support.ShellSort; wHzEMwY_
!-ok"k0,u
/** 6rh5h:
* @author treeroot W~6EEyD%
* @since 2006-2-2 A]<y:^2])C
* @version 1.0 !4]TXH0f
*/ O80<Z#%j`
public class SortUtil { @>u]4Jn
public final static int INSERT = 1; ;}7Rjl#
public final static int BUBBLE = 2; E08klC0
public final static int SELECTION = 3; >x/z7v?^I
public final static int SHELL = 4; Bs13^^hu
public final static int QUICK = 5; C`K?7v3$m
public final static int IMPROVED_QUICK = 6; nv GF2(;l
public final static int MERGE = 7; 4<9=5 q]
public final static int IMPROVED_MERGE = 8; BYpG
public final static int HEAP = 9; ;t'5},(FP
, qA(\[
public static void sort(int[] data) { ^.1)};i
sort(data, IMPROVED_QUICK); ={_C&57N1
} !\"EFVH
private static String[] name={ qUh2hz:
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" -jW.TT h]
}; 7[w,:9& }
wi;Br[d
private static Sort[] impl=new Sort[]{ 6{x(.=
new InsertSort(), ,kF1T,
new BubbleSort(), C.~,qmOP
new SelectionSort(), F{Z~ R
new ShellSort(), }e!x5g
new QuickSort(), N+++4;
new ImprovedQuickSort(), ! _f9NK
new MergeSort(), YT8vP~
new ImprovedMergeSort(), 5}:-h>
new HeapSort() ?u-|>N>
}; PbW(%7o(t
=V-A@_^!c
public static String toString(int algorithm){ 'r4/e-`pK
return name[algorithm-1]; ]*vdSr-J
} j`oy`78O
tU4s'J
public static void sort(int[] data, int algorithm) { 3XL#0\im?s
impl[algorithm-1].sort(data); Qr1 "Tk7s
} ~Am,%"%\
Cf TfL3(J
public static interface Sort { ~KHVY)@P
public void sort(int[] data); ADS9DiX/
} OSlvwH%(EE
M}d_I+
public static void swap(int[] data, int i, int j) { ahuGq'
int temp = data; ?/BqD;{?I
data = data[j]; ;LcVr13J/
data[j] = temp; 9}l33T4T
} .>CPRVuVI
} H!?c\7adX