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。 ky]L`w
插入排序: 9a1R"%Z
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package org.rut.util.algorithm.support; Esj1Vv#
V5jy,Qi)
import org.rut.util.algorithm.SortUtil; 6@(o8i
/** +'[*ikxD=g
* @author treeroot OCqknA
* @since 2006-2-2 +y-3tcI)
* @version 1.0 E`wq`g`H<
*/ NZ^hp\q
public class InsertSort implements SortUtil.Sort{ $9Xn.,W
1':};}dCJ
/* (non-Javadoc) 90<a'<\|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8k Sb92
*/ /(s N@kt
public void sort(int[] data) { w);Bet
int temp; cft@sY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f.v JJa
} d.U"lP/)D
} v)zxQuH]^
} \/Zo*/
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} N_0B[!B]
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冒泡排序: g</Mk^CE
T+5H2]yy)
package org.rut.util.algorithm.support; ronZa0
X4bZ4U*
import org.rut.util.algorithm.SortUtil; ?*QL;[n1
U'} [:h~)
/** leXdxpc
* @author treeroot [F27i#'I]
* @since 2006-2-2 4 `}6W>*R
* @version 1.0 RS{E|
*/ 3XUie;*`
public class BubbleSort implements SortUtil.Sort{ }?U
#@ h
j#VR>0oC]\
/* (non-Javadoc) ]e?L,1-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .z,`{-7U
*/ G$lE0_j2{
public void sort(int[] data) { W=K+kB
int temp; sg<c1
for(int i=0;i for(int j=data.length-1;j>i;j--){ Qz<i{r-z
if(data[j] SortUtil.swap(data,j,j-1); jq/ CXYv
} JWxSN9.X
} jyRz53
} 'z};tIOKJk
} O3p<7`K<4
-}>H3hr
} > mP([]
Sjmq\A88dc
选择排序: cw~-%%/
Ige*tOv2
package org.rut.util.algorithm.support; dhr-tw
llpgi,-=
import org.rut.util.algorithm.SortUtil; r)dXcus
T'14OU2N{Y
/** (6)X Fp&
* @author treeroot [5P1 pkZ
* @since 2006-2-2 &:=[\Ws R
* @version 1.0 ~2XiKY;W?
*/ h7}P5z0F
public class SelectionSort implements SortUtil.Sort { X/S%0AwZ
}~ga86:n0
/* #4& <d.aw'
* (non-Javadoc) -D_xA10
* jXyK[q&O&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @l~MY*hp
*/ A^7}:[s20
public void sort(int[] data) { -
SCFWc
int temp; }pT>dbZ
for (int i = 0; i < data.length; i++) { iB{l:
int lowIndex = i; Q2t>E(S
for (int j = data.length - 1; j > i; j--) { "Qe2U(Un
if (data[j] < data[lowIndex]) { [g lhru=+
lowIndex = j; 3=^B
&AB
} 5e
c T.
} 0&6(y*
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SortUtil.swap(data,i,lowIndex); 3hR3)(+1
} o{MmW~/o&
} g+ cH
9E
} e[.JS6
=#?=Lh
Shell排序: E@)9'?q
D{]9s
package org.rut.util.algorithm.support; CN#2-[T
T'%Rkag>
import org.rut.util.algorithm.SortUtil; ek0,@Vg9
']>/$[!
/** Z+S1e~~
* @author treeroot Y:5Gp8Vi
* @since 2006-2-2 ,k6V?{ZA
* @version 1.0 v,)vW5jGI
*/ yxy~N\0
public class ShellSort implements SortUtil.Sort{ .$r7q[
pIvr*UzY
/* (non-Javadoc) I oC}0C7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /h K/t;
*/ BHIC6i%
public void sort(int[] data) { m/1;os5+8
for(int i=data.length/2;i>2;i/=2){ I- WR6s=
for(int j=0;j insertSort(data,j,i); 8G_KbS
} +(o]E3
} Vs&Ul6@N
insertSort(data,0,1);
.v#Tj|w^
} q<Wz9lDMNR
qyY]:
(8
/** 9*xv
,Yz8
* @param data h1Q rFPQnu
* @param j }LdeU:E4
* @param i K55]W2I9
*/ ne'Y {n(8%
private void insertSort(int[] data, int start, int inc) { :.F;LF&
int temp; XbW 1`PH
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); SQI =D8
}
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} oJor
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} - f%J_`
b:6e2|xf?
} Ve|=<7%%S
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快速排序: [O^mG
9
<FU1|
package org.rut.util.algorithm.support; =_9grF-
N/eFwv.Er
import org.rut.util.algorithm.SortUtil; n~v*
Q`(h
/** #TG.weTC
* @author treeroot E9PD1ADR
* @since 2006-2-2 "P8cgj C
* @version 1.0 ]dQ
*/ bxF'`^En
public class QuickSort implements SortUtil.Sort{ 6^hCW`jG
,Q>wcE6v
/* (non-Javadoc) fdzaM&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]s^Pw>/`
*/ '&Tq/;Ml
public void sort(int[] data) { 4lF?s\W:
quickSort(data,0,data.length-1); #P-T4R
} &s_)|K
private void quickSort(int[] data,int i,int j){ aX(Y
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int pivotIndex=(i+j)/2; T Ue=Yj
file://swap `>skcvkm
SortUtil.swap(data,pivotIndex,j); Xe:e./@
]ZM-c~nL
int k=partition(data,i-1,j,data[j]); |j~{gfpSE
SortUtil.swap(data,k,j); u75(\<{
if((k-i)>1) quickSort(data,i,k-1); 'n4
iW
if((j-k)>1) quickSort(data,k+1,j); GF^?#Jh
qZ DP-
} Tyt1a>!qA
/** _6{XqvWqb
* @param data x_BnWFP
* @param i *odwg$
* @param j kU[#.
y=%p
* @return E0<$zP}V}F
*/ jL9to6 Hmr
private int partition(int[] data, int l, int r,int pivot) { hYU4%"X
do{ Y|N.R(sAs&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8YwSaBwO
SortUtil.swap(data,l,r); X,i^OM_
} 2sNV09id
while(l SortUtil.swap(data,l,r); ~<Sb:Izld
return l; szU_,.\
} ZH8Oidj`
W)m\q}]FYz
} X1~ WQ?ww
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改进后的快速排序: 0N4+6k|
D;WQNlTU
package org.rut.util.algorithm.support; \ q=Bbfzv
Dro2R_j{
import org.rut.util.algorithm.SortUtil; |GnqfD
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/** .3< sv
* @author treeroot ?D`h[ai
* @since 2006-2-2 kESnlmy@J
* @version 1.0 2vx1M6a)L
*/ -@yu 9=DT
public class ImprovedQuickSort implements SortUtil.Sort {
n>:|K0u"
29AWg(9?aS
private static int MAX_STACK_SIZE=4096; B0eKj=y;
private static int THRESHOLD=10; #a=~a=c(^
/* (non-Javadoc) Z2hIoCT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `%A>{ A"
*/ k&SI-jxj
public void sort(int[] data) { xO2CgqEb
int[] stack=new int[MAX_STACK_SIZE]; p}O[A`
x^P ~+(g
int top=-1; S
0L"5B@
int pivot; 2C_/T8
int pivotIndex,l,r; *Z
C$DW!-
f<v:Tg.[
stack[++top]=0; J}3 7 9
stack[++top]=data.length-1; i2(lqhaP
15tT%TC
while(top>0){ M~t;&po
int j=stack[top--]; 5>*~1}0T
int i=stack[top--]; fPu,@
L
^TCgSi7k`L
pivotIndex=(i+j)/2; %_%/ym
pivot=data[pivotIndex]; UCF'%R
Y; OqdO
SortUtil.swap(data,pivotIndex,j); ~AbTbQ3
;E]^7T
file://partition DQRr(r~2Kj
l=i-1; >xJh!w<pB
r=j; NM:\T1
do{ l&4+v.zr
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :r,o-D
SortUtil.swap(data,l,r); `'
"125T
} ^t#W?rxp&
while(l SortUtil.swap(data,l,r); + U];
SortUtil.swap(data,l,j); i%eq!q
`U[s d*C"
if((l-i)>THRESHOLD){ xD3Y-d9
stack[++top]=i; `oUuAL
stack[++top]=l-1; 1pT-PO3=
} iF1E 5{dH
if((j-l)>THRESHOLD){ ppu WcGo
stack[++top]=l+1; 8*t8F\U#
stack[++top]=j; FqpUw<]6s
} #Kd^t=k
)`B
n"=
} [>N`)]fP
file://new InsertSort().sort(data); "ZU CYYre
insertSort(data); /,m!SRJ
} ui$JQ _P
/** <qpDAz4k
* @param data WC<K(PP
*/ qS{E+) P
private void insertSort(int[] data) { s#*T(pY
int temp; 2AK]x`GY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \vQjTM-7
} )r^)e4UI
} 3
2MdDa
} Fv(1A_~IS
mzkv/
} mcB8xE
zPKx: I3
归并排序: }g\1JSJ%H
sq~9
l|F
package org.rut.util.algorithm.support; vOKWi:-U
S_ Pa .
import org.rut.util.algorithm.SortUtil; hwR_<'!
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/** :xz,PeXo7
* @author treeroot gZLzE*NZ
* @since 2006-2-2 1<ic
5kB
* @version 1.0 jx7b$x]
*/ [^4)3cj7}
public class MergeSort implements SortUtil.Sort{ '**dD2
n
.3QX*]{
/* (non-Javadoc) ,-GkP>8f(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ja@zeD)f"
*/ wQV[ZfU^h
public void sort(int[] data) { _R 6+bB$
int[] temp=new int[data.length]; ySEhi_)9^
mergeSort(data,temp,0,data.length-1); Xi~%,~
} ;&N=t64"
vL,:Yn@b
private void mergeSort(int[] data,int[] temp,int l,int r){ WFTXSHcG
int mid=(l+r)/2; yaD_c;
if(l==r) return ; NEb M>1>^
mergeSort(data,temp,l,mid); [G/ti&Od^
mergeSort(data,temp,mid+1,r); =KctAR;
for(int i=l;i<=r;i++){ 5RysN=czA
temp=data; <@puWm[p
} IW<nfg
int i1=l; BlrZ<\-/
int i2=mid+1; yK3b^
for(int cur=l;cur<=r;cur++){ 6|-V{
if(i1==mid+1) RMfKM!
vE
data[cur]=temp[i2++]; )=vQrMyB
else if(i2>r) ".Q``d&X
data[cur]=temp[i1++]; bI_T\Eft
else if(temp[i1] data[cur]=temp[i1++]; O^+H:Y|
else yD-L:)@"
data[cur]=temp[i2++]; 7ZsBYP8%
} k,mgiGrQ
} 7i$)iNW
sOY+X
} f0lpwwe
x&kM /z?/
改进后的归并排序: +"i|)yUYy}
&Is}<Ew
package org.rut.util.algorithm.support; &*4C{N
nbECEQ:|B
import org.rut.util.algorithm.SortUtil; bz1+AJG
kU
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/** 1YrIcovi-
* @author treeroot ZVin+ z
* @since 2006-2-2 $xK2M
* @version 1.0 'fGB#uBt
*/ ip`oL_c
public class ImprovedMergeSort implements SortUtil.Sort { jrl'?`O
y|7sh
private static final int THRESHOLD = 10; Hv~&RZpe
>$RQ
/* 0S%xm'|N
* (non-Javadoc) l
7XeZ} S
* nN]GO}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1j!LK-
*/ [K=M;$iQ
public void sort(int[] data) { a^ __Z3g,
int[] temp=new int[data.length]; :Q=tGj\G
mergeSort(data,temp,0,data.length-1); -*<4 hFb
} T|%pvTIe
=G9 9U/
private void mergeSort(int[] data, int[] temp, int l, int r) { <U]!1
int i, j, k; qq,#bRe
int mid = (l + r) / 2; 6`
8H k;
if (l == r) bl8EzO
return; 0,z3A>C
if ((mid - l) >= THRESHOLD) dx&!RK+
mergeSort(data, temp, l, mid); P"%QFt,
else =sYUzYm
insertSort(data, l, mid - l + 1); `Q@w*ta)
if ((r - mid) > THRESHOLD) @F-InfB8.
mergeSort(data, temp, mid + 1, r); Vx<`6uv
else XB.xIApmy
insertSort(data, mid + 1, r - mid); WEnI[JGe
{PTB]D'
for (i = l; i <= mid; i++) { <?&Y_
temp = data; ,Hzz:ce
} vR)f'+_Nz
for (j = 1; j <= r - mid; j++) { s<XAH7?0
temp[r - j + 1] = data[j + mid]; jv4O
} QH d^?H*
int a = temp[l]; F+m%PVW:
int b = temp[r]; 2YbI."ob
for (i = l, j = r, k = l; k <= r; k++) { D"z3SLFW{
if (a < b) { "?X,);5S
data[k] = temp[i++]; A5\00O~
a = temp; `k.Tfdu)K
} else {
mdtG W
data[k] = temp[j--]; aob+_9o
b = temp[j]; nZbINhls
} 'e(]woe
} T)Zef
} Pss$[ %
V`WSZ
/** cs]h+yE
* @param data z]%c6ty
* @param l I,lX;~xb
* @param i ^ 5D%)@~
*/ ..K@'*u
private void insertSort(int[] data, int start, int len) { Xt.ca,`U
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _ g8CvH)?!
} E-`3}"{
} ++=f7yu
} vmj'X>Q
} ixY[ HDPq
[X%Wg:K
堆排序: TlEd#XQgf&
j%`%
DQ
package org.rut.util.algorithm.support; CiNOGSlDj
2bnYYQ14:
import org.rut.util.algorithm.SortUtil; 81}JX
(B^rW,V[R
/** +7KRoF |
* @author treeroot ;H4 s[#K
* @since 2006-2-2 x##0s5Qn
* @version 1.0 GiK4LJ~cH)
*/ E~y(@72)
public class HeapSort implements SortUtil.Sort{ Vm*E^ v
W<@9ndvH
/* (non-Javadoc) ib\_MNIb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \:m1{+l
*/ KPrH1 [VU
public void sort(int[] data) { &|K9qa~)Y
MaxHeap h=new MaxHeap(); `6:B0-r
h.init(data); qI%X/'
for(int i=0;i h.remove(); z}a9%Fb
System.arraycopy(h.queue,1,data,0,data.length); fjd)/Gg
} =G9I7Y@
EvKzpxCh
private static class MaxHeap{ X=KC+1e
W8_$]}G8E
void init(int[] data){ sxn{uRF
this.queue=new int[data.length+1]; Rz#q68
for(int i=0;i queue[++size]=data; k.ttrKy<q/
fixUp(size); Q@
Ze+IhK`
} zMXQfR
} |[Rlg`TQ;*
~JS BZ@
private int size=0; h5Ee*De
>i_ #q$o
private int[] queue; l86gs6>
DS1{~_>nFu
public int get() { RuGG3"|
return queue[1]; fgoLN\
} 6]sP"
cSTF$62E
public void remove() { (6*
SortUtil.swap(queue,1,size--); v{X<6^g
fixDown(1); .%EYof
} 2}n7f7[/b
file://fixdown \2^o,1r/
private void fixDown(int k) { +'$5Jtz
int j; :>y;*x0w
while ((j = k << 1) <= size) { X`fb\}~R(
if (j < size %26amp;%26amp; queue[j] j++; pft-.1py
if (queue[k]>queue[j]) file://不用交换 t$e' [;w
break; +# 3e<+!F
SortUtil.swap(queue,j,k); '.wb= C
k = j; |->CI
} tE#;$Ss
} \^1S:z
private void fixUp(int k) { ox*>HkV
while (k > 1) { Ae[fW97
int j = k >> 1; 4a=QTq0p
if (queue[j]>queue[k]) aka)#0l .
break; FP'-=zgc
SortUtil.swap(queue,j,k); 7^7Jh&b)/
k = j; #U(kK(uO
} hv`I`[/J
} X;1yQ|su
Ms#rvn!J
} tZG l^mA"g
EsS$th)d
} P1R5}i
61w
({F
SortUtil: ob;O,&e0>
n?778Wo}
package org.rut.util.algorithm; _G&gF.|
M-Ek(K3SRf
import org.rut.util.algorithm.support.BubbleSort; ^IKT!"J&?
import org.rut.util.algorithm.support.HeapSort; ^=k=;
import org.rut.util.algorithm.support.ImprovedMergeSort; R GL2S]UFs
import org.rut.util.algorithm.support.ImprovedQuickSort; PthgxB^
import org.rut.util.algorithm.support.InsertSort; 4.p:$/GTS
import org.rut.util.algorithm.support.MergeSort; D94bq_2}
import org.rut.util.algorithm.support.QuickSort; l,*5*1lM
import org.rut.util.algorithm.support.SelectionSort; Wu" 1M^a
import org.rut.util.algorithm.support.ShellSort; as(/
>p
>=4('
/** W7. +
* @author treeroot la}cGZ; p.
* @since 2006-2-2 f^ja2.*%?
* @version 1.0 Eq%f`Qg+1E
*/ ^
L]e]<h(
public class SortUtil { 84!Hd.H
public final static int INSERT = 1; d%UzQ*s
public final static int BUBBLE = 2; Bf.iRh0Q5
public final static int SELECTION = 3; Z5p
[*LMO
public final static int SHELL = 4; h*R w^5,c
public final static int QUICK = 5; 6?Kl L [~
public final static int IMPROVED_QUICK = 6; !TivQB
public final static int MERGE = 7; l/,la]!T
public final static int IMPROVED_MERGE = 8; qW`?,N)r
public final static int HEAP = 9; @C<ofg3E
&)jq3
public static void sort(int[] data) { \1SC:gN*#
sort(data, IMPROVED_QUICK); i),bAU!+m
} ap8q`a{j^
private static String[] name={ 4l7
Ny\J
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" K iEmvC
}; d@p#{ -
Wb>;L@jB7
private static Sort[] impl=new Sort[]{ 1_b*j-j
new InsertSort(), 14"+ctq
new BubbleSort(), 7{]dh+)
new SelectionSort(), d@ >i=l [
new ShellSort(), p="0Y<2l
new QuickSort(), J?dLI_{<
new ImprovedQuickSort(), v<t?t<|J
new MergeSort(), e_|Z&
new ImprovedMergeSort(), 4i
PVpro
new HeapSort() KIcIYCBz
}; Z+u.LXc|c
qvLh7]sbK:
public static String toString(int algorithm){ yVgC1-8i*
return name[algorithm-1]; KIi:5Y
} JEk'2Htx
`KN>0R2k
public static void sort(int[] data, int algorithm) { F}7sb#G
impl[algorithm-1].sort(data); lKB9n}P
} l^d' 8n
>[Wjzg
public static interface Sort { 0k{\W
public void sort(int[] data); =@0J:"c
} YVwpqOE.=
,l6,k<
public static void swap(int[] data, int i, int j) { 71y{Dwya
int temp = data; l -xc*lC
data = data[j]; x1?mE)n]
data[j] = temp; t,Ka]
/I
} .1q}mw
} &y}7AV