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。 #jO2Zu2`}
插入排序: yA7O<p+
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package org.rut.util.algorithm.support; Y^|15ek
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import org.rut.util.algorithm.SortUtil; G=C2l#
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/** R@`xS<`L/
* @author treeroot 4`7~~:W!M5
* @since 2006-2-2 #G\-ftA &
* @version 1.0 Ki%)LQAg
*/ ?DnQU"_$
public class InsertSort implements SortUtil.Sort{ ~bis!(}p-
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/* (non-Javadoc) "j.Q*Hazg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j
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*/ ^E%NYq_2l<
public void sort(int[] data) { mM_gOd
int temp; H)y_[:[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z+4Mo*#
} +?5Vuc%
} Oo
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} 6.a>7-K}%
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} h,K&R8S
pTJ_DH
冒泡排序: )5Cqyp~P
ol`q7i.
package org.rut.util.algorithm.support; &?gcnMg$,J
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import org.rut.util.algorithm.SortUtil; Eok8+7g0&
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/** =CL,+
* @author treeroot psS^
* @since 2006-2-2 w2U]RI\?2
* @version 1.0 <Zh\6*3:ab
*/ ]*0t?'go'
public class BubbleSort implements SortUtil.Sort{ !u`f?=s;
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/* (non-Javadoc) r 2{7h>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @#9xSs#
*/ DvA#zX[
public void sort(int[] data) {
P# ;pQC
int temp; kjSzuqB
for(int i=0;i for(int j=data.length-1;j>i;j--){ z,VXH ?.Zo
if(data[j] SortUtil.swap(data,j,j-1); 77 ?TRC
} Q1H.2JXr
} % 5BSXAc
} Ysi@wK-LnF
} P+3
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DG3Mcf@5
} n9 Jev_!A
G)""^YB-
选择排序: ~\%H0.P6
U1kW1L}B
package org.rut.util.algorithm.support; nYj7r*e[
q@4Cw&AI+
import org.rut.util.algorithm.SortUtil; FE06,i\{
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/** viVn
* @author treeroot R!rMrWX
* @since 2006-2-2 TdoH((nY
* @version 1.0 XW{cC`&
*/ i-x/h-
public class SelectionSort implements SortUtil.Sort { YKx+z[A/p
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/* F<)f&<5E-
* (non-Javadoc) EE qlsH
* 0BOL0<Wq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tV7{j'If
*/ frWY8&W^H
public void sort(int[] data) { $% W.=a'5
int temp; uLN.b339
for (int i = 0; i < data.length; i++) { 4XeO^#
int lowIndex = i; |J^I8gx+
for (int j = data.length - 1; j > i; j--) { nH[>Sff$
if (data[j] < data[lowIndex]) { HaOSFltf#
lowIndex = j; Z,F1n/7
} r&XxF>
} zaE!=-U
SortUtil.swap(data,i,lowIndex); *mN8Qd
} ;47 =x1ji
} TQ5kT?/{
5%DHF-W)
} Q%t
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wJ7Fnj>u%
Shell排序: ASNo6dP7
73!])!SVI
package org.rut.util.algorithm.support; <*p
G2J4N2hu
import org.rut.util.algorithm.SortUtil; FWS!b!#,N
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/** RLDu5
* @author treeroot t1aKq)?
* @since 2006-2-2 Fk?KR
* @version 1.0 HA0yX?f]
*/ U,aMv[Z B
public class ShellSort implements SortUtil.Sort{ hllb\Y)XL
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/* (non-Javadoc) Btc[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "VAbUs
*/ _^^5
public void sort(int[] data) { 6V1
Z(K
for(int i=data.length/2;i>2;i/=2){ ;i 3C
for(int j=0;j insertSort(data,j,i); 1oG'm
} *(VwD)*
} oMN
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insertSort(data,0,1); e#?rK=C?9
} 'EkjySZ]F{
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/** L!2Ef4,wAz
* @param data "04:1J`
* @param j ab<7jfFIa
* @param i 77G4E ,]
*/ =Flr05}m
private void insertSort(int[] data, int start, int inc) { m=]}Tn
int temp; ]T>YYz
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .O9Pn,:
} &)EL%o5
} a+n?y)u
} [g:KFbEY
kgRgHkAH~
} B 5va4@
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快速排序: t%Y}JKLR
!]!9 $6n
package org.rut.util.algorithm.support; 4rNuAK`2
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import org.rut.util.algorithm.SortUtil; hx@E,
@ds.)sKA>
/** :?7^STc
* @author treeroot 6^nxw>-
* @since 2006-2-2 4n.EA,:g:(
* @version 1.0 L4Si0 K
*/ |C\XU5}
public class QuickSort implements SortUtil.Sort{ QWK\6
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/* (non-Javadoc) L$f:D2Ei
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?yvjX90
*/ cX48?srG
public void sort(int[] data) { Z`@< O%
quickSort(data,0,data.length-1); Za1VJ5-
} -O[9{`i]
private void quickSort(int[] data,int i,int j){ t$*CyYb{@
int pivotIndex=(i+j)/2; y1Yrf,E
m=
file://swap Hp3T2|uL
SortUtil.swap(data,pivotIndex,j); |B@\Nf7
)<%IY&\
int k=partition(data,i-1,j,data[j]); b_oUG_B3]
SortUtil.swap(data,k,j); {`[u XH?3d
if((k-i)>1) quickSort(data,i,k-1); z)pp{
if((j-k)>1) quickSort(data,k+1,j); rh(77x1|(G
`~ R%}ID
} M{U7yE6*j*
/** MY>o8A
* @param data i>@"&
* @param i @!Q\|
<
* @param j
ZN(@M@}
* @return EeS VY
*/ &?yVLft
private int partition(int[] data, int l, int r,int pivot) { <ApzcyC
do{ _l](dqyuN(
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); n6
AP6PK7
SortUtil.swap(data,l,r); _gP-$&JC
} VW\~OH
while(l SortUtil.swap(data,l,r); LgoUD*MbQ
return l; 1V 2"sE
} OW8"7*irT
?rv5Z^D'
} e/ V8lo
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改进后的快速排序: 8@4)p.{5I
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package org.rut.util.algorithm.support; #5W-*?H
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import org.rut.util.algorithm.SortUtil; z8n]6FDiE
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/** P/hIJV[
* @author treeroot \BxE0GGky
* @since 2006-2-2 Nn|~:9#
* @version 1.0 %NfbgJcL_
*/ swT/
tesj
public class ImprovedQuickSort implements SortUtil.Sort { C<\O;-nHH
0%<x>O
private static int MAX_STACK_SIZE=4096; ]!04L}hy|P
private static int THRESHOLD=10; i.*Utm`1"e
/* (non-Javadoc) '-m )fWf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GOhGSV#
*/ NhA_dskvo
public void sort(int[] data) { ?W4IAbT\G
int[] stack=new int[MAX_STACK_SIZE]; [#6Eax,j
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int top=-1; X'h
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int pivot; w>$2
int pivotIndex,l,r; @-Js)zcl q
m>@ *-*8k
stack[++top]=0; MUU9IMFJ
stack[++top]=data.length-1; dzPwlCC%-
Z 2u5n`K
while(top>0){ w6[uM%fHG
int j=stack[top--]; #97w6,P+
int i=stack[top--]; Up kw.`D`
6@@J>S>
pivotIndex=(i+j)/2; ;.P9t`*
pivot=data[pivotIndex]; X(ZouyD<
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SortUtil.swap(data,pivotIndex,j); Y!|*`FII
4RV5:&ALLS
file://partition o Z#4<7K
l=i-1; !mLYW
r=j; 5>'1[e45
do{ }2eP~3
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); J 4E G
SortUtil.swap(data,l,r); +iYy^oXxw
} 7+vyN^XJ"5
while(l SortUtil.swap(data,l,r); {qHf%y&[
SortUtil.swap(data,l,j); &jHnM^nQ
F&om^G'U
if((l-i)>THRESHOLD){ A!Ls<D.
stack[++top]=i; ~L.)<{?
stack[++top]=l-1; 'rwnAr
} H,H=y},
if((j-l)>THRESHOLD){ wLf=a^c#
stack[++top]=l+1; _n;V iQMu
stack[++top]=j; 3G7Qo
} OK}+:Y
y84=Q
} )q48cQ
file://new InsertSort().sort(data); ,U#$Qb 12
insertSort(data); w1+xlM,,9
} lJloa'%v9
/** iCYo?>
* @param data .?YLD+\A
*/ [9E<z2H
private void insertSort(int[] data) { Wl:vO^
int temp; ?Rj)x%fN
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ie!ik
} _ ecKX</Q
} aa1^cw 5}
} 420cJ{;A
dfBTx6/F
} "3"9sIZ(
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归并排序: ytX XZ`
4EiEE{9V
package org.rut.util.algorithm.support; C=6 Vd
[p+6HF
import org.rut.util.algorithm.SortUtil; e!67Na0X(
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/** > T,^n
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* @author treeroot 0b0.xz\~U
* @since 2006-2-2 K 5SHt'P
* @version 1.0 d&x1uso%L
*/ 5};Nv{km^2
public class MergeSort implements SortUtil.Sort{ %hzl3>().
x7=5 ;gf/X
/* (non-Javadoc) rQ^$)%uP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ub8|x]ix
*/ DV(^h$1_
public void sort(int[] data) { Gmi w(T
int[] temp=new int[data.length]; -$#'
mergeSort(data,temp,0,data.length-1); 9:!<=rk
} R30{/KK
m
4VhR_
private void mergeSort(int[] data,int[] temp,int l,int r){ (q!tI*}
int mid=(l+r)/2; AK/_^?zA s
if(l==r) return ; xA-O?s"CY
mergeSort(data,temp,l,mid); RSLMO8
mergeSort(data,temp,mid+1,r); *t'qn
for(int i=l;i<=r;i++){ TM8WaH
temp=data; S"iz
fQ@
} T=|oZ
int i1=l; 'G!w0yF
int i2=mid+1; \h DH81L
for(int cur=l;cur<=r;cur++){ LB|FVNW/S
if(i1==mid+1) p-H q\DP
data[cur]=temp[i2++]; ).0h4oHSj
else if(i2>r) R!i9N'gGG(
data[cur]=temp[i1++]; cCd2f>EHw
else if(temp[i1] data[cur]=temp[i1++]; );*A$C9RA
else `Tx1?]
data[cur]=temp[i2++]; :bxq%D%|o
} LY%`O#i.
} Cebl"3Q
x;,H>!r"i
} ]urrAIK
^d! (8vh
改进后的归并排序: YPraf$
`k}
package org.rut.util.algorithm.support; 85P7I=`*d
T/#$44ub
import org.rut.util.algorithm.SortUtil; HF9d~7R
}5Yd:%u5
/** jFBLElE
* @author treeroot )6# i>c-
* @since 2006-2-2 8'Eu6H&$G
* @version 1.0 !xm87I
*/ $F!)S
public class ImprovedMergeSort implements SortUtil.Sort { ;Jex#+H(:D
V&x6ru#
private static final int THRESHOLD = 10; 6vrMR&#a
"pb,|U
/* IG?044Y
* (non-Javadoc) L3^WI(
8m
* DW^E46k)A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t =ErJ
*/ LEoL6ga
public void sort(int[] data) { #WD}XOA
int[] temp=new int[data.length]; fHek!Jv.
mergeSort(data,temp,0,data.length-1); k\UDZ)TQV
} >y%*HC!G
d^"<Tz!
private void mergeSort(int[] data, int[] temp, int l, int r) { 2<jbNnj
int i, j, k; KXEDpr
int mid = (l + r) / 2; I4kN4*d!N,
if (l == r) tH0=ysf
return; (^-i[aJY
if ((mid - l) >= THRESHOLD) VY)!bjW.
mergeSort(data, temp, l, mid); n22k<@y
else KS($S(Fi
insertSort(data, l, mid - l + 1); w,(e,8#:
if ((r - mid) > THRESHOLD) )K2,h5zU
mergeSort(data, temp, mid + 1, r); F0O"rN{
else <S'5`-&
insertSort(data, mid + 1, r - mid); EGYYSoBLU
{FO>^~>l
for (i = l; i <= mid; i++) { 6$TE-l
temp = data; xWX1P%`
} jX5lwP
Q|F
for (j = 1; j <= r - mid; j++) { nmlQ-V-
temp[r - j + 1] = data[j + mid]; : [o0Va2 d
} k23*F0Dv
int a = temp[l]; sfSM7f
int b = temp[r]; tSK{Abw1B
for (i = l, j = r, k = l; k <= r; k++) { .!T]sX_P
if (a < b) { R9X*R3nB
data[k] = temp[i++]; , &S:(b[D
a = temp; +Z0@z^6\
} else { )jbYWR*&
data[k] = temp[j--]; N5u.V\F!z\
b = temp[j]; L4I1n l
} zG|}| //}
} rtr0 d
} \;
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deR2l(0%yr
/** 4R5+"h:
* @param data V:*QK,
* @param l M#II,z>q
* @param i 9V*h:[6a(
*/ ZSj^\JU
private void insertSort(int[] data, int start, int len) { Ky33h 0TX
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z}v6!u|iZu
} 5bZf$$b
} y>T:fu
} j8*fa
} /PbN!r<1
{7!WtH;-
堆排序: )En*5-1
,"!t[4p=f
package org.rut.util.algorithm.support; eC:?j`H-
FBpf_=(_1
import org.rut.util.algorithm.SortUtil; B`,4M&
2
F3U,}
/** |) {)w`
* @author treeroot s u]x
* @since 2006-2-2 J1kG'cH05
* @version 1.0 @Y":DHF5q
*/ Y>*{(QD
public class HeapSort implements SortUtil.Sort{ AL%H$ I
<`8l8cL
/* (non-Javadoc) %;+Q0
e9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o@6:|X)7
*/ T/Q#V)Tp
public void sort(int[] data) { 7Pu.<b}
MaxHeap h=new MaxHeap();
r=YprVX
h.init(data); 0U'g2F>{
for(int i=0;i h.remove(); 0` :B#ten
System.arraycopy(h.queue,1,data,0,data.length); #w3cImgp2
} u!TVvc
L=W8Q8hf
private static class MaxHeap{ [5$=G@ zf
K@u\^6419
void init(int[] data){ Yoy}Zdu}h
this.queue=new int[data.length+1]; _Wn5*
Pi%Z
for(int i=0;i queue[++size]=data; -gZI^EII
fixUp(size); Qzbelt@Wx
} !"{+|heU9p
} p3Uus''V4
71i".1l{K
private int size=0; t>[K:[0U
~Ti
private int[] queue; "I.PV$Rxl
JR='c)6:
public int get() { yM(zc/?
return queue[1]; >,22@4
} <t[WHDO`
S'"(zc3=
public void remove() { :_F$e
SortUtil.swap(queue,1,size--); L7i^?40
fixDown(1); L=zt\L
} e>W}3H5w0
file://fixdown zRDBl02v$T
private void fixDown(int k) { ^DZ(T+q,
int j; #?h#R5:0
while ((j = k << 1) <= size) { =bm<>h7.)
if (j < size %26amp;%26amp; queue[j] j++; z>HeM
Mei
if (queue[k]>queue[j]) file://不用交换 N-
E)b
break; Dg]( ?^
SortUtil.swap(queue,j,k); %j9'HtjEa
k = j; noz&4"S.{
} 7U_~_yb
} G&FA~c
private void fixUp(int k) { _\M:h+^
while (k > 1) { OEc$ro=m*
int j = k >> 1; 48
DC
if (queue[j]>queue[k]) V6%J9+DK
break; Z3Le?cMt^
SortUtil.swap(queue,j,k); |1vikG8
k = j; _B4H"2}[Y
} {VOLUC o 4
} gGl}~
Zr`pOUk!4
} 8jyg1NN D
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} r|[uR$|Y
(xnXM}M&2Y
SortUtil: e-vwve
L' w
}
package org.rut.util.algorithm; ^VCgc>x;
&_cMbFLBP
import org.rut.util.algorithm.support.BubbleSort; Cf#[E~2 4
import org.rut.util.algorithm.support.HeapSort; (dl7+
import org.rut.util.algorithm.support.ImprovedMergeSort; Y>}[c
import org.rut.util.algorithm.support.ImprovedQuickSort; *,Bo $:(n
import org.rut.util.algorithm.support.InsertSort; zX+NhTTB
import org.rut.util.algorithm.support.MergeSort; [43:E*\$
import org.rut.util.algorithm.support.QuickSort; ^F@z+q
import org.rut.util.algorithm.support.SelectionSort; /DPD,bA
import org.rut.util.algorithm.support.ShellSort; +[$d9
Zi$v- b*<
/** $@y<.?k>UP
* @author treeroot RGrra<
* @since 2006-2-2 Z/nTI0N{
* @version 1.0 D;%(Z!
*/ Vo*38c2
public class SortUtil { ^^MVd@,i
public final static int INSERT = 1; g~EJja;
public final static int BUBBLE = 2; FSnF>3kj-
public final static int SELECTION = 3; WZkAlg7Z
public final static int SHELL = 4; lFMQT
;
public final static int QUICK = 5; @SA:64
9
public final static int IMPROVED_QUICK = 6; Hk)IV"[R
public final static int MERGE = 7; w#EP`aM2$=
public final static int IMPROVED_MERGE = 8; |y+<|fb,a
public final static int HEAP = 9; 'urn5[i
=?Y%w%2
public static void sort(int[] data) { CT1)tRN
sort(data, IMPROVED_QUICK); fhCMbq4T
}
a`XXz
private static String[] name={ ^,`;x
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W10=SM}
}; 24u;'i-y5
v[efM8
private static Sort[] impl=new Sort[]{ 0"q ^`@sZ
new InsertSort(), )@"iWQ3K
new BubbleSort(), . e' vc
new SelectionSort(), $f`\TKlN
new ShellSort(), mx`C6G5
new QuickSort(), 4c"x&x|
new ImprovedQuickSort(), +r0ItqkM
new MergeSort(), Z]H`s{3
new ImprovedMergeSort(), ,'~8{,h5
new HeapSort() *$uj)*5,
}; +k=BD s
wBr$3:
public static String toString(int algorithm){ y_bb//IAG
return name[algorithm-1]; o#wDA0T
} 6ybpPls
SF?Ublc!
public static void sort(int[] data, int algorithm) { [UqJ3@>
impl[algorithm-1].sort(data); L`v7|! X
} /Yk4%ZJ{
US<bM@[
public static interface Sort { p
BU,"Yy&
public void sort(int[] data); b(<#n6a}\
} q}vz]L&o
[~cb&6|M
public static void swap(int[] data, int i, int j) { 3N8RZt1.b
int temp = data; &_mOw.
data = data[j]; j*uc$hC"
data[j] = temp; `?Wy;5-
} !1+yb.{\
} KjK.Sv{N