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。 UzTFT:\
插入排序: O~?H\2S
1t w>C\
package org.rut.util.algorithm.support; roSdcQTeT
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import org.rut.util.algorithm.SortUtil; A)/8j2
/** ^lud2x$O^C
* @author treeroot S:aAR*<6
* @since 2006-2-2 w\ 4;5.$
* @version 1.0 FrT.<3
*/ 7Ko<,Kp2b
public class InsertSort implements SortUtil.Sort{ gG*]|>M JI
+i HZ*
/* (non-Javadoc) z~f Zg6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TwJiYXHw?
*/ -FftEeo7
public void sort(int[] data) { a|?&
int temp; ,<Zu4bww
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,j E'd'$
} T5H[~b|9-
} T;!: A
} LS;j]!CU
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} ;n]GHqzY_
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冒泡排序: v<CZ.-r\j
&B?TX.
package org.rut.util.algorithm.support; 3>asl54
Bu7Ztt*
import org.rut.util.algorithm.SortUtil; {,xI|u2R
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/** W}jel}:
* @author treeroot uy'm2
* @since 2006-2-2 qw?#~"Ca.
* @version 1.0 paCC'*bv
*/ :x88
public class BubbleSort implements SortUtil.Sort{ oHh~!#u
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/* (non-Javadoc) nYy%=B|>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f4[fXP;A
*/ @N+ }cej
public void sort(int[] data) { 0>{&8:
int temp; Ad7N'1O
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3<F\5|
if(data[j] SortUtil.swap(data,j,j-1); )bqSM&SO
} ufl[sj%^|
} 1'Sr0
oEd3
} ?|,dHqh{nM
} n1!hfu7@s
NSs"I]
} D/U=zDpiB
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选择排序: Yx#?lA2gx
R%Xhdcn7
package org.rut.util.algorithm.support; ={~?O&Jh
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import org.rut.util.algorithm.SortUtil; :)JIKP%$\)
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/** Odn`q=
* @author treeroot [7Fx#o=da
* @since 2006-2-2 r{LrQ
* @version 1.0 U)v){g3w)
*/ ?`T0zpC
public class SelectionSort implements SortUtil.Sort { +|0f7RB+R
IkWV|E
/* /6fa
7;
* (non-Javadoc) X%X`o%AqC
* R;d)I^@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0+3_CS++r
*/ !V.2~V[^M
public void sort(int[] data) { =1ltX+
int temp; lK VV*RR}
for (int i = 0; i < data.length; i++) { G.{)#cR
int lowIndex = i; !m {d6C[
for (int j = data.length - 1; j > i; j--) { 1Jm'9iy3
if (data[j] < data[lowIndex]) { yj$a0Rgkv
lowIndex = j; 2eC`^
} ccR#<Pb6q
} t_xO-fT)
SortUtil.swap(data,i,lowIndex); S"=y>.#
} U~CG(9
} WNnB
s
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} vQH6CB"
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Shell排序: ]`+J!G,
U3t$h
package org.rut.util.algorithm.support; Ty&Ok*
ob.Br:x
import org.rut.util.algorithm.SortUtil; &0`[R*S
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/** PP*',D3
* @author treeroot wjzR 8g0bQ
* @since 2006-2-2 Qr.SPNUFK
* @version 1.0 n=F|bW
*/ OK] _.v}
public class ShellSort implements SortUtil.Sort{ rbt/b0ET
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/* (non-Javadoc) 6lAHB*`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8el\M/u{
*/ uD=FTx
public void sort(int[] data) { *`]#ntz9
for(int i=data.length/2;i>2;i/=2){ D[H #W[
for(int j=0;j insertSort(data,j,i); eo [eN.
} U0m 5Rc
} c3__=$)'kP
insertSort(data,0,1); zk++#rB
} GbB:K2
[,a2A
/** dy'
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* @param data O~*`YsL9
* @param j P->.eo#VG
* @param i b#
|
*/ gm8FmjZtf
private void insertSort(int[] data, int start, int inc) { eAl;:0=%L
int temp; rYI7V?
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Z1dLC'/b]
} VN/v]
} huat,zLS
} wZnv*t_
Wm^RfxgN/
} )` z{T
,9.-A-Yw
快速排序: o%SD\zk
N|-'Fu
package org.rut.util.algorithm.support; 4:0y\M5u
Vh}F#~BrI
import org.rut.util.algorithm.SortUtil; H&*KpOL
HU1ZQkf
/** bu:%"l
* @author treeroot WKvG|YRDq
* @since 2006-2-2 zL@FN sYVM
* @version 1.0 "i^<
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*/ O<>cuW(l
public class QuickSort implements SortUtil.Sort{
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MhL>6rn
/* (non-Javadoc) ;&} rO.0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Q9!DF m
*/ Sg+0w7:2
public void sort(int[] data) { |aX1PC)o_
quickSort(data,0,data.length-1); WNO!6*+
} I&JjyR
private void quickSort(int[] data,int i,int j){ &UxI62[k
int pivotIndex=(i+j)/2; H"vkp~u]I
file://swap :vXlni7N[M
SortUtil.swap(data,pivotIndex,j); YIn
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vPce6 Cl*
int k=partition(data,i-1,j,data[j]); [))TL
SortUtil.swap(data,k,j); h%PbM`:}6
if((k-i)>1) quickSort(data,i,k-1); ~YQH]
if((j-k)>1) quickSort(data,k+1,j); :~wU/dEEiz
P*:9u>
} /v-:ca)7mI
/** IBm"VCg{Ew
* @param data |kc#=b@l
* @param i sNHxUI
* @param j FQe82tfV+
* @return ;6655C
*/ hM "6-60
private int partition(int[] data, int l, int r,int pivot) { AI,Jy%62/
do{ AD>X'J
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); zI{~;`tzN
SortUtil.swap(data,l,r); vE{L `,\q
} $2/v8
while(l SortUtil.swap(data,l,r); ]L/AW
return l; U9(p ^
} ! _p(H
y*<x@i+h
} vAcxca">S
]AB'POa
改进后的快速排序: rHpxk
(RU\a]Ry
package org.rut.util.algorithm.support; fP8iz `n
z,K;GZuP
import org.rut.util.algorithm.SortUtil; =berCV
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/** )8&;Q9'o
* @author treeroot jBMGm"NE
* @since 2006-2-2 _%]x-yH!@
* @version 1.0 @;t6Slc"~
*/ 05ovz
public class ImprovedQuickSort implements SortUtil.Sort { I[w;soI
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private static int MAX_STACK_SIZE=4096; bnZ~jOHl
private static int THRESHOLD=10; bmQ-5SE
/* (non-Javadoc) >_|$7m.?n[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4GqwY"ja
*/ L0X/
public void sort(int[] data) { %4,v2K
int[] stack=new int[MAX_STACK_SIZE]; TGH"OXV*@
)%wNVW 0C
int top=-1; Ku`u%5<
int pivot; $(fhO
int pivotIndex,l,r; +)ba9bJ|
;ZoEqMv
stack[++top]=0; ,X}Jpi;/
stack[++top]=data.length-1; zff<#yK1
QWI)Y:<K/
while(top>0){ s"JD,gm$
int j=stack[top--]; bae\EaS
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int i=stack[top--]; \e9rXh%
svvl`|n%
pivotIndex=(i+j)/2; sd&^lpH
pivot=data[pivotIndex];
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ac!!1lwA
SortUtil.swap(data,pivotIndex,j); YhQ%S}
N;S1s0FN
file://partition {1;R&
l=i-1; qO{Yr$V%
r=j; N4)ZPLV
do{ *X l,w2@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); X'J!.Jj
SortUtil.swap(data,l,r); 6~^ M<E
} |*(R$t X
while(l SortUtil.swap(data,l,r); MqjdW
SortUtil.swap(data,l,j); L%HFsuIO-
-?p4"[
if((l-i)>THRESHOLD){ {Jc.49
stack[++top]=i; Om_-#S
stack[++top]=l-1; ;<l#k7 /
} >
JV$EY,
if((j-l)>THRESHOLD){ YL&)@h
stack[++top]=l+1; Q!y%N&
stack[++top]=j; `8/D$
} &4{!5r
i:60|ngK
} 'E"W;#%
file://new InsertSort().sort(data); (vFO'jtcB-
insertSort(data); Y/ I32@
} k}0b7er=R
/** kRqe&N e
* @param data Ay0.D FL
*/ Z(I=KBI
private void insertSort(int[] data) { 4 '5|YGQj
int temp; ha?M[Vyw4Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B[s
} w:+&i|H >
} 2ElZ&(RZJF
} 5x"eM=
NwyNl
} L;-V Yo#
K%ptRj$
归并排序: ~P BJ~j+G
rXR!jZ.hi
package org.rut.util.algorithm.support; g OK
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import org.rut.util.algorithm.SortUtil; d:pGdr& .
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/** yA#nnu1
* @author treeroot 8a3EVc
* @since 2006-2-2 C6'K)P[p
* @version 1.0 e'MW"uCP}
*/ K3k{q90
public class MergeSort implements SortUtil.Sort{ h [@}}6
MK(~
/* (non-Javadoc) s:3b. *t<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :$*@S=8 O
*/ NfWL3"&X
public void sort(int[] data) {
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int[] temp=new int[data.length]; zGNmc7
mergeSort(data,temp,0,data.length-1); K /$-H#;N
} =~>g--^U
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private void mergeSort(int[] data,int[] temp,int l,int r){ sYbmL`{
int mid=(l+r)/2; SBI*[
if(l==r) return ; !Df>Q5~g
mergeSort(data,temp,l,mid); .C` YO2,
mergeSort(data,temp,mid+1,r); EbG&[v
for(int i=l;i<=r;i++){ @H8DGeM
temp=data; (K_{a+$[
} 5z&>NI
int i1=l; 6Ad C
int i2=mid+1; ^J;rW3#N8
for(int cur=l;cur<=r;cur++){
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if(i1==mid+1) ]iMqIh"
data[cur]=temp[i2++]; Z~].v._YV)
else if(i2>r) Zo,066'+[.
data[cur]=temp[i1++]; L{rd',
else if(temp[i1] data[cur]=temp[i1++]; W{c
Z7$d
else h5(OjlMC
data[cur]=temp[i2++]; hr!'
} {[3xi`0-
} KP&xk13)
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} q~^!Ck+#*
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改进后的归并排序: j^%N:BQ&
'50}QY_R.
package org.rut.util.algorithm.support; ,q;?zcC7
I1Otu~%d
import org.rut.util.algorithm.SortUtil; yfal'DqKF
*E]:VZl
/**
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* @author treeroot 9F[_xe@
* @since 2006-2-2 [X91nUz#
* @version 1.0 wh)F&@6 R!
*/ Nv^byWqu
public class ImprovedMergeSort implements SortUtil.Sort { Ra"hdxH
5YneoM]Q
private static final int THRESHOLD = 10; >7PNl\=gG
PW82
Vp.
/* Au6Y]
* (non-Javadoc) !6x7^E;c
* CW2)1%1iz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9VanR
::XX
*/ `ZbFky{
public void sort(int[] data) { 2$ &B@\WY
int[] temp=new int[data.length]; QIg'js$W
mergeSort(data,temp,0,data.length-1); C T\@>!'f
} ITg<u?z_
91]sO%3
private void mergeSort(int[] data, int[] temp, int l, int r) { k<5g
int i, j, k; >ZW|wpO
int mid = (l + r) / 2; Y2;2Exp^
if (l == r) T];dFv-GT
return; uuxVVgWp{
if ((mid - l) >= THRESHOLD) qXhdU/
=
mergeSort(data, temp, l, mid); \EsT1aT
else $
nHD,h
insertSort(data, l, mid - l + 1); bAbR0)
if ((r - mid) > THRESHOLD) lj UdsU w
mergeSort(data, temp, mid + 1, r); l&}}Io$?@
else #y[U2s Se
insertSort(data, mid + 1, r - mid); YM};85 K
PfZS"yk
for (i = l; i <= mid; i++) { b\"w/'XX
temp = data; !LzA
} !sSq 4K
for (j = 1; j <= r - mid; j++) { Mc<u?H
temp[r - j + 1] = data[j + mid]; UoPY:(?;i
} s*s~yH6
int a = temp[l]; Q@7d:v
int b = temp[r]; zh|9\lf
for (i = l, j = r, k = l; k <= r; k++) { JXM]tV
if (a < b) { hHGuD2%
data[k] = temp[i++]; DY9]$h*y
a = temp; OZ+v ~'oD
} else { t&:L?K)j
data[k] = temp[j--]; [:FiA?O]
b = temp[j]; a&V;^ /
} DU0/if9.
} fGO\f;P
} ^lAM /
TS#[[^!S
/** nYFrp)DLK
* @param data wD=]U@t`,
* @param l YZj*F-}
* @param i NC#F:M;b
*/ s2#Ia>5!
private void insertSort(int[] data, int start, int len) { i'7+
?YL
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |1RVm?~i
} LP=j/qf|
} d 8DU[p
} ](A2,F
9(U
} T*f/M
>WIc"y.
堆排序: xbm%+
G[A3H>
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package org.rut.util.algorithm.support; o87kF!x
%VH, (}i
import org.rut.util.algorithm.SortUtil; nuXL{tg6
=o~GLbsER
/** sVK?sBs]
* @author treeroot o`,~#P|
* @since 2006-2-2 IQRuqp KL
* @version 1.0 v6s,lC5qR
*/ B*,)@h
public class HeapSort implements SortUtil.Sort{ 0Gc@AG{
d<6F'F^w.7
/* (non-Javadoc) 1^4:l!0D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PDuc;RG
*/ @kqxN\DE
public void sort(int[] data) { @Fb1D"!
MaxHeap h=new MaxHeap(); +yp:douERi
h.init(data); :-B+W9'5
for(int i=0;i h.remove(); d=PX}o^
System.arraycopy(h.queue,1,data,0,data.length); _r*\ BM8y
} jYFJk&c
[/CGV8+
private static class MaxHeap{ a:fP
U}RBgPX!
void init(int[] data){ UowvkVa
this.queue=new int[data.length+1]; y
%Q. (
for(int i=0;i queue[++size]=data; <Gi%+I@szl
fixUp(size); +cfEyiub
} z*EV>Y[
} MLu!8dgI
d_,5;M^k
private int size=0; ];OvV ,*
#*'Qm
A
private int[] queue; Dz(\ ?
S^eem_C
public int get() { 5e/YEDP
return queue[1]; x,!Dd
} 1)56ec<c
sD:o
2(G*
public void remove() { UX@%1W!8
SortUtil.swap(queue,1,size--); Lwr's'ao.
fixDown(1); ~v+kO~
} ^$K&Met
file://fixdown Yv5H41o"
private void fixDown(int k) { u4C9ZYN
int j; U!aM63F3
while ((j = k << 1) <= size) { V4n~Z+k
if (j < size %26amp;%26amp; queue[j] j++; GtVT^u_
if (queue[k]>queue[j]) file://不用交换 @-'a{hBR
break; Nmj)TOEPW
SortUtil.swap(queue,j,k); hMa; \ k
k = j; Y~WdN<g
} %_ibe
} jYHn J}<
private void fixUp(int k) { Dfs*~H63
while (k > 1) { s-$Wc)l
int j = k >> 1; dFm_"135
if (queue[j]>queue[k]) %
i4
5
break; cb|+6m~
SortUtil.swap(queue,j,k); ABN4kM>%
k = j; tk&AZb,sP
} ;xZ+1zmL0
} _MBhwNBxZ
hOY@vm&
} >}+{;d
fg^AEn1i
} #ibwD:{
fp)SZu_*
SortUtil: g2vm]j
U?*zb
package org.rut.util.algorithm; x]{P.7IO'
Mg;pNK\n
import org.rut.util.algorithm.support.BubbleSort; E#$Jg|e
import org.rut.util.algorithm.support.HeapSort; Vu:ZG*^
import org.rut.util.algorithm.support.ImprovedMergeSort; Q$E.G63Wl
import org.rut.util.algorithm.support.ImprovedQuickSort; [';o -c"!
import org.rut.util.algorithm.support.InsertSort; hdPGqJE
import org.rut.util.algorithm.support.MergeSort; %Mda<3P
import org.rut.util.algorithm.support.QuickSort; (S~kyU!)0
import org.rut.util.algorithm.support.SelectionSort; 1dQAo1
import org.rut.util.algorithm.support.ShellSort; r&{8/ 5"
nTeA=0 4
/** @dWA1tM
* @author treeroot DYf QlA
* @since 2006-2-2 :_8K8Sa
* @version 1.0 g3:@90Ba
*/ GV0\+A"vD
public class SortUtil { |+Y-i4t
public final static int INSERT = 1; _:r8UVAT.
public final static int BUBBLE = 2; ,:?ibE=
public final static int SELECTION = 3; J,=K1>8s
public final static int SHELL = 4; hX.cdt_?
public final static int QUICK = 5; uf6egm5]
public final static int IMPROVED_QUICK = 6; _3`GZeGV
public final static int MERGE = 7; Jt_=aMY:7
public final static int IMPROVED_MERGE = 8; 6] x6FeuS
public final static int HEAP = 9; b)diYsTH
^?cu9S3
public static void sort(int[] data) { yu;EL>G_AY
sort(data, IMPROVED_QUICK); SZWNN#w60?
} 2(eO5.FYF
private static String[] name={ JtFq/&{i
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Y&6jFT_
}; {7:1F)Pj
Y25`vE(
private static Sort[] impl=new Sort[]{ D!`[fjs6A
new InsertSort(), ef)RlzLOq
new BubbleSort(), TGJz[Ny
new SelectionSort(), Wg|6{'a
new ShellSort(), REh"/d
new QuickSort(), 8W&1"h`
new ImprovedQuickSort(), K*@?BE
new MergeSort(), 56Wh<i3
new ImprovedMergeSort(), $u<;X^
new HeapSort() K)'[^V Xh
}; )I%M]K]F
V%R]jbHZ#
public static String toString(int algorithm){ #Pd9i5~N
return name[algorithm-1]; ([8*Py|
} `oxBIn*BD
f#s 6 'g
public static void sort(int[] data, int algorithm) { )z7CT|h7S
impl[algorithm-1].sort(data); `wi+/^);
} 1uo-?k
-M{szH
public static interface Sort { XRPJPwes]
public void sort(int[] data); < se ~wR
} mS%4
#un'?]tZF
public static void swap(int[] data, int i, int j) { &* VhtT?=5
int temp = data; v[$e{ Dz(
data = data[j]; -RP{viGWK
data[j] = temp; W? G4>zA
} J_)F/S!T
} !XTzsN