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。 5hqXMs
插入排序: lBn<\Y!^
W)`>'X`
package org.rut.util.algorithm.support; EQnU:a
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import org.rut.util.algorithm.SortUtil; 6n:X
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/** ~m R^j
* @author treeroot uP7|#>1%
* @since 2006-2-2 &=zJ MGa
* @version 1.0 %AV3eqghCg
*/ UB] tKn
public class InsertSort implements SortUtil.Sort{ depCqz@
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/* (non-Javadoc) dyqk[$(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w8>lWgN
*/ d*!H&1L
public void sort(int[] data) { I9TNUZq('
int temp; =PU@'OG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wV-N\5!r%H
} ?,v@H$)3_
} wPyc?:|KD?
} b%VBSNZ
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} xR'd}>`
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冒泡排序: KJn 3&7
cLp9|y0r
package org.rut.util.algorithm.support; WnQ'I=E#~
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import org.rut.util.algorithm.SortUtil; rI)&.5^
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/** fk#Ggp<
* @author treeroot 4P2p|Gc3
* @since 2006-2-2 ),<h6$
* @version 1.0 "{{@N4^
*/ PzjIM!>
public class BubbleSort implements SortUtil.Sort{ Ux,dj8=o
F&/}x15
/* (non-Javadoc) TR?jT
U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B_r:da CS:
*/ 4yu=e;C wy
public void sort(int[] data) { D-e^b'l
int temp; kSJ:4! lFU
for(int i=0;i for(int j=data.length-1;j>i;j--){ k \t6b1.M
if(data[j] SortUtil.swap(data,j,j-1); d76C]R5L
} */]1?M@P)
} =0@ o(#gM
} Mi!ak
} OOsd*nX/
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} [xs`Pi
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选择排序: 7")&njQ/x
^-}3+YA
package org.rut.util.algorithm.support; lZ+1A0e
.b%mr:nEt7
import org.rut.util.algorithm.SortUtil; %MfT5*||f
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/** 51%<N\>/4
* @author treeroot D@mqfi(x
* @since 2006-2-2 {.,y v>%
* @version 1.0 ht)KS9Xu
*/ WtSlD9 h
public class SelectionSort implements SortUtil.Sort { [yAR%]i-7
{XS2<!D
/* &kOb#\11u
* (non-Javadoc) la!rg#)-X
* v CR\lR+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TwE&5F*
*/ nYY' hjZ
public void sort(int[] data) { MU_
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int temp; b~G|Bhxa
for (int i = 0; i < data.length; i++) {
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int lowIndex = i; HQ|{!P\/?U
for (int j = data.length - 1; j > i; j--) { LZ9IE>sj
if (data[j] < data[lowIndex]) { 6~+?DIc
lowIndex = j; *Oe;JqQkK
} Lop=._W
} VM
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SortUtil.swap(data,i,lowIndex); T|nN.
} qo;F]v*pkK
} > cJX'U9
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} |Oaj
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Shell排序: v3jx2Z
UUql"$q
package org.rut.util.algorithm.support; yIThzyS
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import org.rut.util.algorithm.SortUtil; <Gu dx>I
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/** Q ?W6
* @author treeroot &-Zg0T&tZ
* @since 2006-2-2 DU4Prjb'
* @version 1.0 T1b9Zqc)f
*/ =mk7'A>l
public class ShellSort implements SortUtil.Sort{ 3?(||h{
`S7${0e
/* (non-Javadoc) M*c`@\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]pA}h.R#-
*/
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public void sort(int[] data) { Ts:pk
for(int i=data.length/2;i>2;i/=2){ WS0RvBvb
for(int j=0;j insertSort(data,j,i); eVWnD,'
} ]HP
} e{9(9qE"
insertSort(data,0,1); Ad7=JzV
} 5G=CvGu
Hv>Hz*s_I
/** BO ^T
:
* @param data =l3*{ ?G
* @param j 3' 6>zp
* @param i #/1,Cv yj
*/ gasl%&
private void insertSort(int[] data, int start, int inc) { " mE<r2=@
int temp; Wc_Ph40C<_
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8YBsYKC
} F3a"SKMW
} [w)6OT
} 7<?v!vQ}-
Hca)5$yL
} jKu"Vi|j>
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快速排序: 2S8/
lsB
nmN6RGx
package org.rut.util.algorithm.support; A!
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import org.rut.util.algorithm.SortUtil; B)"WG7W E
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/** ZA ii"F
* @author treeroot o*QhoDjc
* @since 2006-2-2 ^f1}:g
* @version 1.0 @*l}2W
*/ [w~1e)D
public class QuickSort implements SortUtil.Sort{ !/$BXUrd
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/* (non-Javadoc) ,[^P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X;p,Wq#D'
*/ 4//Ww6W:
public void sort(int[] data) { s 4}}MV3X
quickSort(data,0,data.length-1); I)O-i_}L&K
} c Ew/F0
private void quickSort(int[] data,int i,int j){ {N;XjV1x
int pivotIndex=(i+j)/2; 5kJ>pb$/
file://swap `h
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SortUtil.swap(data,pivotIndex,j); U]ouBG8/
U1rh[A>
int k=partition(data,i-1,j,data[j]); Y6fU;
SortUtil.swap(data,k,j); JX/rAnc@
if((k-i)>1) quickSort(data,i,k-1); 9!FV.yp%F
if((j-k)>1) quickSort(data,k+1,j); zYj8\iER
Q_1EAxt
} Vo(d)"m?
/** 4F8`5)RM
* @param data .)u,sYZA|
* @param i |)IN20
* @param j T.W/S0#j3
* @return OY`G _=6!N
*/ /sdkQ{J!.
private int partition(int[] data, int l, int r,int pivot) { ,)Z^b$H]
do{ Mi'eViH
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .'7o,)pJ<
SortUtil.swap(data,l,r); dmrM %a}W-
} #ZGWU_l}
while(l SortUtil.swap(data,l,r); TiF$',WMv
return l; }kXF*cVg
} wEzLfZ Oz/
k2*^W&Z
} 6576RT
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改进后的快速排序: WE`Y!
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package org.rut.util.algorithm.support; Q9#$4
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import org.rut.util.algorithm.SortUtil; ]Wv\$JXI
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/** l=EIbh
* @author treeroot kRE^G*?
* @since 2006-2-2 UXa3>q>
* @version 1.0 94|BSxc
*/ n&[U/`o
public class ImprovedQuickSort implements SortUtil.Sort { -_pI:K[
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private static int MAX_STACK_SIZE=4096; )X| uOg&|
private static int THRESHOLD=10; {u46m
/* (non-Javadoc) 3r^i>r8B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :fpYraBM
*/ /k}vm3
public void sort(int[] data) { %t%+;(M9
int[] stack=new int[MAX_STACK_SIZE];
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D
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int top=-1; Ty#L%k}-t
int pivot; g4j?E{M?
int pivotIndex,l,r; -@L*i|A
d:=5y)
stack[++top]=0; i)8,u
stack[++top]=data.length-1; O-bC+vB]M
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while(top>0){ nKkI
int j=stack[top--]; #xE"];
int i=stack[top--]; yZA}WTGe
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pivotIndex=(i+j)/2; ,n~H]66n
pivot=data[pivotIndex]; A*~zdZ p
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SortUtil.swap(data,pivotIndex,j); i6(y Bn
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file://partition `;4zIBJ
l=i-1; jcOxtDTSW
r=j; .#J'+LxFr
do{ ,T jd
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !>;p^^e
SortUtil.swap(data,l,r); w]F (o
} $xlI"-(
while(l SortUtil.swap(data,l,r); OZLU>LU
SortUtil.swap(data,l,j); MBDu0
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if((l-i)>THRESHOLD){ 0j4bu}@
stack[++top]=i; #th^\pV
stack[++top]=l-1; $0sUh]7y
} 8TC%]SvYim
if((j-l)>THRESHOLD){ FrB}2
stack[++top]=l+1; 0D:J d6\
stack[++top]=j; 86@"BNnTh
} )aOg_*~
srJ,Jr(
} t#}/VnSQ
file://new InsertSort().sort(data); &d 9tR\}
insertSort(data); p^7ZFUP
} GZ
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/** +;pdG[N
* @param data [|xHXcW
*/ UFm E`|le
private void insertSort(int[] data) { ~%k<N/B
int temp; VGA?B@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q9yY%
} ^cDHyB=v4d
} .0cm
mpUNq
} wp-*S}TT
-GDX#A-J
} X]tjT
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归并排序: HpuHJ#l
mn?<
Zz
package org.rut.util.algorithm.support; M8:gHjwsx
5A Vo#}&\
import org.rut.util.algorithm.SortUtil; ^zO%O653
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/** NHPpHY3^.
* @author treeroot [^P25K
* @since 2006-2-2 g
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* @version 1.0 DU4NPys]y
*/ ,57g_z]V
public class MergeSort implements SortUtil.Sort{ D#1'#di*t
<<@$0RW
/* (non-Javadoc) 8@|+-)t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [&j!g
*/ j#9p0[
public void sort(int[] data) { ShxB!/s
int[] temp=new int[data.length]; t+W+f
mergeSort(data,temp,0,data.length-1); &M*&oi (
} `<8~tS/. w
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private void mergeSort(int[] data,int[] temp,int l,int r){ wH3FCfvm
int mid=(l+r)/2; /4<eI3Z
if(l==r) return ; |/Am\tk#13
mergeSort(data,temp,l,mid); uw&GXOzew9
mergeSort(data,temp,mid+1,r); Gnr]qxL
for(int i=l;i<=r;i++){ `BmAu[(e&
temp=data; ~}i&gd|(
} \@8$tQCZ
int i1=l; 2N9
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int i2=mid+1; \3hhM}6)DM
for(int cur=l;cur<=r;cur++){ [58xT>5`m
if(i1==mid+1) %XMrSlSOp
data[cur]=temp[i2++]; `
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b5
else if(i2>r) a 9(1 6k
data[cur]=temp[i1++]; W r);A{
else if(temp[i1] data[cur]=temp[i1++]; <:W]u T
else WhMr'l/e
data[cur]=temp[i2++]; #^"\WG7{
} yrs![ u
} :\NqGS=<
(?72 vCc
} M6jP>fbV*
sT?Qlj'Zd
改进后的归并排序: <bDjAVq
tMad
2,:
package org.rut.util.algorithm.support; KIps{_J[<
F=EAD3
import org.rut.util.algorithm.SortUtil; -ytSS:|%\
#9,!IW]l
/** 9qc1^Fs~
* @author treeroot @`t)ly#N
* @since 2006-2-2 gz;( ).{
* @version 1.0 o) `zb?
*/ p^Kp= z
public class ImprovedMergeSort implements SortUtil.Sort { vtc} )s\
U#gHc:$
private static final int THRESHOLD = 10; Pwt4e-
>&f .^p
/* gEcVQPD@
* (non-Javadoc) (9CB&LZ(+E
* '""qMRCm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .;u(uB;J6
*/ 43W>4fsc
public void sort(int[] data) { R4"["T+L`
int[] temp=new int[data.length]; (d |
mergeSort(data,temp,0,data.length-1); $h0]
} OY*BVJ^
X4>c(1e
private void mergeSort(int[] data, int[] temp, int l, int r) { wO@b=1j
int i, j, k; 5r.\maW
int mid = (l + r) / 2; y,tA~
if (l == r) $NJ]2P9L
return; iOm~
if ((mid - l) >= THRESHOLD)
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mergeSort(data, temp, l, mid); 2-ev7:
else c=<d99Cu!
insertSort(data, l, mid - l + 1); C"PN3>x}j
if ((r - mid) > THRESHOLD) hun
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mergeSort(data, temp, mid + 1, r); a5{CkM&,(
else f&bY=$iff
insertSort(data, mid + 1, r - mid); [Qa0uM#SU
s[)2z3
for (i = l; i <= mid; i++) { (pm]U7
temp = data; e,>L&9] ZI
} #\"8sY,j
for (j = 1; j <= r - mid; j++) { JAj<*TB.%
temp[r - j + 1] = data[j + mid]; aSi:(w
} xojy[c#
int a = temp[l]; w:I^iI.
int b = temp[r]; sTU]ntoQqR
for (i = l, j = r, k = l; k <= r; k++) { 6cp x1y]~6
if (a < b) { +j_Vs+0
data[k] = temp[i++]; E B)j&y_
a = temp; &STgj|t_
} else { O?L_9L*
data[k] = temp[j--]; '
jR8 3A*
b = temp[j]; XA5gosq
} F'lG=c3N
} HdGAE1eU]}
} ,GS8Gu
BhJqMK>'S
/** pOS:/~I3
* @param data ;XSRG*3j~4
* @param l b{)9?%_
* @param i Hq8<g$
*/ zh2$U
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private void insertSort(int[] data, int start, int len) { TKvUBy
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yc8FEn!)&
} 1 h|cr_
} E)o/C(g
} HuBG?4Qd
} + 1\1Z@\M
4JKB6~Y
堆排序: Vj_(55WQ
g3 6oEz~|
package org.rut.util.algorithm.support; 8Y3c,p/gS>
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import org.rut.util.algorithm.SortUtil; eft-]c+*0
{H#1wu^]O$
/** ]|<PV5SY3.
* @author treeroot V:9| 9$G
* @since 2006-2-2 s@OCj0'l
* @version 1.0 X ~%I(?OX
*/ @y[Zr6\z
public class HeapSort implements SortUtil.Sort{ .%+'Ts#ie
Y}7'OM
/* (non-Javadoc) }]>[FW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 18z{d9'F
*/ ,RKBGOz?f
public void sort(int[] data) { I7r{&X) D
MaxHeap h=new MaxHeap(); YR'?fr
h.init(data); E0$UoP
for(int i=0;i h.remove(); 'Sppm;?
System.arraycopy(h.queue,1,data,0,data.length); K20n355uE
} TDBWYppM
BWFl8
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private static class MaxHeap{ /p~"?9b[ i
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7H
void init(int[] data){ ~0w7E0DE[
this.queue=new int[data.length+1]; J5)e 7
for(int i=0;i queue[++size]=data; 91r9RG>
fixUp(size); yZ~<!
5.P
} EXH{3E54)`
} SJoQaR,)>
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private int size=0; "5 PP<A,F(
X5U_|XK6Y
private int[] queue; T#6'] D
q#LwM]<.@>
public int get() { 7s;<5xc
return queue[1]; D$q"k"
} |Yh-`~~A"
5'@J}7h
public void remove() { [&|Le;h
SortUtil.swap(queue,1,size--); V.)y7B
fixDown(1); @;qC% +^
} {S%)GvrT
file://fixdown yT`[9u,
private void fixDown(int k) { 0aQtJ0e16
int j; kFgN^v^t
while ((j = k << 1) <= size) { 6[$kEKOY=
if (j < size %26amp;%26amp; queue[j] j++; wYSvI
if (queue[k]>queue[j]) file://不用交换 4q/E7n
break; Fkuq'C<|Y
SortUtil.swap(queue,j,k); D;Fvd:
k = j; >9a%"<(2#
}
V"%2T z
} I+D`\OSL
private void fixUp(int k) { tBtJRi(
while (k > 1) { nT` NfN
int j = k >> 1; </t_<I0{
if (queue[j]>queue[k]) T?!^-PD9*
break; ehtiu!Vk
SortUtil.swap(queue,j,k); (M4~N)7<P5
k = j; >C+0LF`U
} 3:<+9X
} $5GvF1
E}lU?U5i
} a({qc0+UK
_DMj)enH"
} c=I!?a"
jz't!wj
SortUtil: {.bLh0
5
usfyY]z
package org.rut.util.algorithm; daaUC
FI.S?gy0
import org.rut.util.algorithm.support.BubbleSort; a[\,K4l
import org.rut.util.algorithm.support.HeapSort; S+ymdZ)xZ`
import org.rut.util.algorithm.support.ImprovedMergeSort; HB{-^9{E
import org.rut.util.algorithm.support.ImprovedQuickSort; +'>N]|Z
import org.rut.util.algorithm.support.InsertSort; 0(Y$xg
import org.rut.util.algorithm.support.MergeSort; [?RLvhU|
import org.rut.util.algorithm.support.QuickSort; TSdjX]Kf
import org.rut.util.algorithm.support.SelectionSort; DX}EOxO,.
import org.rut.util.algorithm.support.ShellSort; w4'(Y,(`
MVjc.^
/** XtT;UBE
* @author treeroot Bh:AY@k
* @since 2006-2-2 j8?$Hk
* @version 1.0 Q&(?D
*/ w!:u|
public class SortUtil { .!KlN% As
public final static int INSERT = 1; [4
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public final static int BUBBLE = 2; [A|W0
public final static int SELECTION = 3; *0 i
public final static int SHELL = 4; 4v3y3
public final static int QUICK = 5; (Ew o
public final static int IMPROVED_QUICK = 6; {5.,gb @6
public final static int MERGE = 7; *`ehI_v :
public final static int IMPROVED_MERGE = 8; l6xC'c,jg
public final static int HEAP = 9; }CsUZ&* &
5U|f"3&8
public static void sort(int[] data) { ij r*_=
sort(data, IMPROVED_QUICK); 00U8<~u
} Xa*52Q`_
private static String[] name={ T=VVK6Lc:
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"
.}ohnnJB0
}; KK(x)(
HGWwGd
private static Sort[] impl=new Sort[]{ TmKO/N@}
new InsertSort(), BS*cG>T
new BubbleSort(), #Vv*2Mc
new SelectionSort(), qw%4j9}
new ShellSort(), NxNR;wz>l
new QuickSort(), @MtF^y
new ImprovedQuickSort(), BRQ9kK20
new MergeSort(), :eQ@I+
new ImprovedMergeSort(), 3, ,Z
new HeapSort() IL3,dad'^
}; 5ez"B]&T
5zpk6FR$
public static String toString(int algorithm){ mt fDl;/D
return name[algorithm-1]; H\8i9RI
} (oq(-Wv
@WhcY*R2
public static void sort(int[] data, int algorithm) { akm) X0!-}
impl[algorithm-1].sort(data); xVfJ]Y
} uAzVa!)
t1Hd-]28V
public static interface Sort { ;TmwIZ
public void sort(int[] data); D: JGd$`
} *X %`MN
BTjF^&`
public static void swap(int[] data, int i, int j) { x 9Gm)~
int temp = data; Ip8 Ap$
data = data[j]; lxbbyy25
data[j] = temp; PwF}yxkI
} Ng'f u|
} -jC. dz