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。 E>D_V@,/
插入排序: 0"f\@8r(
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package org.rut.util.algorithm.support; gcl5jB5)>
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import org.rut.util.algorithm.SortUtil; }f6HYU
/** 4bYK}oS
* @author treeroot ,Ge"anO
* @since 2006-2-2 z?R|Ok
* @version 1.0 !WQ-=0cm
*/ -#N.X_F
public class InsertSort implements SortUtil.Sort{ VgZsB$Ori
U_I5fK=
/* (non-Javadoc) ^f4s"T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hYG6 pTCb
*/ kY-N>E:
public void sort(int[] data) { Z/Dx,zIR
int temp; ;'#8tGv=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); woGAf)vV#
} 0"28'
} 9
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} x"~8*V'0
/} b03
} rrik,qyv6
] Zy5%gI
冒泡排序: s;01u_
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package org.rut.util.algorithm.support; Ac2n
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import org.rut.util.algorithm.SortUtil; V{/?FO?E
a%/9v"}
/** s@K4u^$A
* @author treeroot .$+#1-
* @since 2006-2-2 61k"p2?+
* @version 1.0 }HFN3cq;C
*/ 'h|DO/X~L
public class BubbleSort implements SortUtil.Sort{ A>o*t=5
.6+Z^,3
/* (non-Javadoc) Y5- F@(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [+n*~
*/ !Prg_6
`
public void sort(int[] data) { eD?tLj
int temp; oAODp!_c
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^
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if(data[j] SortUtil.swap(data,j,j-1); cPyE 6\lN
} {?}E^5Z*g
} IP xiV]c
} w0rRSD4S8B
} D#cyOrzy
gmw|H?]
} ` Mjj@[
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选择排序: %Nlt H/I
y" RF;KW>
package org.rut.util.algorithm.support; vdivq^%=a
x<tb
import org.rut.util.algorithm.SortUtil; ;=)k<6
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/** o=1Uh,S3R
* @author treeroot qeV fE_<
* @since 2006-2-2 z+0I#kM"1
* @version 1.0 AYqX|
*/ g:g\>@Umo
public class SelectionSort implements SortUtil.Sort { Ns>-
o
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/* x
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* (non-Javadoc) s4X>.ToMC
* 5d Eh7XL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -`*a'p-=
*/ PxWT1 !
public void sort(int[] data) { wN_Vfb
int temp; <=zQ NBtx
for (int i = 0; i < data.length; i++) { BTqS'NuT
int lowIndex = i; >?2M
}TV3
for (int j = data.length - 1; j > i; j--) { c69C
if (data[j] < data[lowIndex]) { '.IW.{;$
lowIndex = j; ?8npG]L)
} `06;
} M8MRoA6F
SortUtil.swap(data,i,lowIndex); pnl{&<$C%C
} v|XTr,#
} *'Sd/%8{
*v;2PP[^
} mitHT :%r2
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Shell排序: cvn@/qBq*t
\pa"%c)
package org.rut.util.algorithm.support; >:74%D0UF
/hr7NT{e%v
import org.rut.util.algorithm.SortUtil; ~qiJR`Jj
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/** !j9t*2m[
* @author treeroot 5V?&8GTe
* @since 2006-2-2 NO*u9YH?
* @version 1.0 Bd!bg|uO*
*/ Q:2>}QgX}
public class ShellSort implements SortUtil.Sort{ (!ux+K
0M_ DB=
/* (non-Javadoc) qzYwt]GNS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FvaUsOy"
*/ H*d9l2,KZS
public void sort(int[] data) { iOd&BB6
for(int i=data.length/2;i>2;i/=2){ -$pzl,^ h
for(int j=0;j insertSort(data,j,i); [`ebM,W
} :i0uPh\0
} Xpr?Kgz
insertSort(data,0,1); UFXaEl}R
} cXA
i k-
\ ZgE
/** &W|[r(
* @param data J?*1*h
* @param j 3lf=b~Zi)
* @param i R[zpD%CI
*/ ew>XrT=Zm
private void insertSort(int[] data, int start, int inc) { =mO vs
int temp; fe\mL mK9
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); dcDyK!zz"
} M,j U}yD3
} []\+k31D
} "Bh}}!13
rlML W
} QJZK|*
.N,bIQnj
快速排序: }fp-pe69z
B7VH<;Z
package org.rut.util.algorithm.support; %vn|k[nD
NpE*fR')
import org.rut.util.algorithm.SortUtil; ~Q Oe##
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/** 5[8xV%>;
* @author treeroot {JO^tI
* @since 2006-2-2 Df}A^G >X
* @version 1.0 j@AIK+0Qc
*/ .u)X3..J
public class QuickSort implements SortUtil.Sort{ ;dkYf24
TYy?KG>:'
/* (non-Javadoc) +vw\y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GF"hx`zyJ
*/ q}b
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public void sort(int[] data) { )\1@V+!E%
quickSort(data,0,data.length-1); ^-TE([ bW
} #oS<E1
private void quickSort(int[] data,int i,int j){ 0%32=k7O[
int pivotIndex=(i+j)/2; lXx=But
file://swap y;4OY
SortUtil.swap(data,pivotIndex,j); &9.C l;I
fJ=0HNmX
int k=partition(data,i-1,j,data[j]); ADz ^\
SortUtil.swap(data,k,j); 6`&a&%,O
if((k-i)>1) quickSort(data,i,k-1); V )3KS-
if((j-k)>1) quickSort(data,k+1,j); c_dVWh e
A9[ F
} MOQ6:
/** U2ohHJ``
* @param data C+*d8_L
* @param i Yc`o5Q\>
* @param j kC:uG0sW
* @return ^gN6/>]qrY
*/ t^UxR@l<K|
private int partition(int[] data, int l, int r,int pivot) { UZWioxsKr+
do{ v|Pv 03%?7
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @CNi{. RX
SortUtil.swap(data,l,r); bc7/V#W
} G?9"Y%
while(l SortUtil.swap(data,l,r); O24m;oHM
return l; UgRhWV~f0
} ):P?
Lt2u,9
} UI0(=>L
|+{)_?
改进后的快速排序: QpF;:YX^3
W1WYej"
package org.rut.util.algorithm.support; fPU`/6
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import org.rut.util.algorithm.SortUtil; oF vfCrd
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/** {Je[ZQ$
* @author treeroot M
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ac
* @since 2006-2-2 bAdn &
* @version 1.0 #`~C)=-
*/ x!hh"x
public class ImprovedQuickSort implements SortUtil.Sort { bs+f,j-oBN
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private static int MAX_STACK_SIZE=4096; ]yV!
private static int THRESHOLD=10; Plc-4y1
/* (non-Javadoc) GmK^}=frj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *=) cQeJ
*/ t1]K<>g
public void sort(int[] data) { i)\L:qF5
int[] stack=new int[MAX_STACK_SIZE]; OwuE~K7b{
( B!uy`
int top=-1; +20G>y=+
int pivot; \c,ap49RC
int pivotIndex,l,r; 6o^,@~:R
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stack[++top]=0; G`+T+
stack[++top]=data.length-1; Ig$(3p
|U~<3.:m:
while(top>0){ .GbX]?dN
int j=stack[top--]; }pDqe;a{
int i=stack[top--]; 'Jiw@t<o3`
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pivotIndex=(i+j)/2; AW%50V
pivot=data[pivotIndex]; Gw=B:kGk
4Xgg%@C
SortUtil.swap(data,pivotIndex,j); ;
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#:jHp44J
file://partition A_V]yP
l=i-1; DP[IZC
r=j; ~3^
8>d/
do{ :8I9\eet3
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @>u}eB>Kn
SortUtil.swap(data,l,r); fJ5iS
} -] LY,M
while(l SortUtil.swap(data,l,r); '>NCMB{*
SortUtil.swap(data,l,j); ]5mn ew
iM AfJ-oN
if((l-i)>THRESHOLD){ H
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stack[++top]=i; ,ly\Ka?zO
stack[++top]=l-1; vhe>)h*B
} Bz^jw>1b
if((j-l)>THRESHOLD){ mGtdO/C#B
stack[++top]=l+1; *7:>EP
stack[++top]=j; R}'bP
} :C7_Jp*Qv
aL*&r~`&e'
} I+BHstF5um
file://new InsertSort().sort(data); f}aL-N~
insertSort(data); Z"Zmo>cV4
} +:8fC$vVfC
/** :Uz| 3gq
* @param data vmi+_]
*/ w&X<5'GM
private void insertSort(int[] data) { %;cddLQ\xY
int temp; 7zA'ri3w
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <
nXL
} u0 P|0\
} Diy8gt
} V\t.3vT
6{x(.=
} qT,Te
uvMy^_}L
归并排序: f) zn TJL
'GB.UKlR
package org.rut.util.algorithm.support;
7_%"BVb"
0x'#_G65y
import org.rut.util.algorithm.SortUtil; Mc=$/ o
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/** %kv0Wefs
* @author treeroot $g/SWq
* @since 2006-2-2 V\{clJ\U
* @version 1.0 4S5,w(6N
*/ FQm`~rA~zt
public class MergeSort implements SortUtil.Sort{ 7"aN#;&
`rgn<I"
/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _
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*/ U@g4w!$r
public void sort(int[] data) { ./,/y"x
int[] temp=new int[data.length]; Xp >7iX!:
mergeSort(data,temp,0,data.length-1); e]`[yf
} c0PIc^R(@
n.T&}ZPz\v
private void mergeSort(int[] data,int[] temp,int l,int r){ Y-pzy']4
int mid=(l+r)/2; @*OZx 9
if(l==r) return ; '3_]Gu-D
mergeSort(data,temp,l,mid); *;1,5L
mergeSort(data,temp,mid+1,r); IzsphBI
for(int i=l;i<=r;i++){ s8wmCzB~
temp=data; @HQ`~C#Z'
} 9bP^`\K[N
int i1=l; W"zab
int i2=mid+1; lV`Q{bd+
for(int cur=l;cur<=r;cur++){ *i]=f6G
if(i1==mid+1) RMK"o?
data[cur]=temp[i2++]; ,u!*2cWN
else if(i2>r) s}j{#xT
data[cur]=temp[i1++]; uZc`jNc\
else if(temp[i1] data[cur]=temp[i1++]; )\_:{ c
else _jJPbKz
data[cur]=temp[i2++]; yOphx07 (
} *FC=X) _&W
} eAXc:222
_&N2'hG=sn
} |K6REkzr
4#ug]X4Y')
改进后的归并排序: |zR8rqBX;
8dZ0rPd?
package org.rut.util.algorithm.support; crqpV F]1]
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import org.rut.util.algorithm.SortUtil; _z'u pb&
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/** lp<g\
* @author treeroot JQ,1D`?.a
* @since 2006-2-2 LJ*q 1
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* @version 1.0 9{-EJ)
*/ "]z-: \ V
public class ImprovedMergeSort implements SortUtil.Sort { Q7R~{5r>W
l%?T2Fm3>
private static final int THRESHOLD = 10; .#1~Rz1r
5"HVBfFk
/* ]<H&+ &!
* (non-Javadoc) y9_K, g
* ?%`@ub$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hvA^n@nr
*/ -sw
.
public void sort(int[] data) { hJDi7P
int[] temp=new int[data.length]; c%&:6QniZ
mergeSort(data,temp,0,data.length-1); : y5<go8e
} zY,r9<I8_x
>c9a0A
private void mergeSort(int[] data, int[] temp, int l, int r) { NbC@z9Q
int i, j, k; @$LWWTr;
int mid = (l + r) / 2; |_`E1Y}}
if (l == r) sYjpU
return; e
' 2F#
if ((mid - l) >= THRESHOLD) 2'_:S@
mergeSort(data, temp, l, mid); qjf[zF
else #;%JT
insertSort(data, l, mid - l + 1); Au4yBm
u
if ((r - mid) > THRESHOLD) 7Garnd b
mergeSort(data, temp, mid + 1, r); I9:Cb)hbU]
else }z\_;\7
insertSort(data, mid + 1, r - mid); wQwQXNG
|g
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for (i = l; i <= mid; i++) { y($%;l
temp = data; ^@qvl%j
} ?gJy3@D
for (j = 1; j <= r - mid; j++) { &4b&X0pU
temp[r - j + 1] = data[j + mid]; #a`a$A
} Aj2OkD
int a = temp[l]; B>GE9y5
int b = temp[r]; mnmP<<8C,
for (i = l, j = r, k = l; k <= r; k++) { >B2:kY F
if (a < b) { AwslWkd=
data[k] = temp[i++]; w:?oTuw
a = temp; z)9wXo#~
} else { L
]w/P|
data[k] = temp[j--]; =li |
b = temp[j]; #|*F1K
} 2Z3('?\z~
} c05 %iv
} Q8DQlqHm
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/** nWMmna.5
* @param data |37
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* @param l Hd,p!_
* @param i ]p;FZ4-T
*/ /Wy.>YC|
private void insertSort(int[] data, int start, int len) { Sp}tD<V
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); D<Zp!J1o
} :PtF+{N>
} l'\pk<V
} BQ @huns3
} h}]fnA
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堆排序: v>Mnl
NcP.;u;`
package org.rut.util.algorithm.support; 6%fKuMpK(
C&6IU8l\
import org.rut.util.algorithm.SortUtil; +QE^\a
m+#iR}*1L
/** .N*Pl(<[
* @author treeroot bd<m%OM""
* @since 2006-2-2 CYKr\DA
* @version 1.0 I(9R~q
*/ 8
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public class HeapSort implements SortUtil.Sort{ ?gwUwOV"
#'q<v"w
/* (non-Javadoc) l2&`J_"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RKPD4e>%
*/ wN2QK6Oc
public void sort(int[] data) { WyZL9K{?
MaxHeap h=new MaxHeap(); ,9P:Draxs`
h.init(data); &`fhEN
for(int i=0;i h.remove(); j~FD{%4N
System.arraycopy(h.queue,1,data,0,data.length); ?_v{|
YI=
} [xT:]Pw}
l/Vo-#
private static class MaxHeap{ a&k_=/X&
E"L2&.
void init(int[] data){ UThB7(O,
this.queue=new int[data.length+1]; fPR$kch
for(int i=0;i queue[++size]=data; D)@YI.T
fixUp(size); ]I L;`>Gp
} ~`D|IWMDq
} (?H0+zws^
l9Q(xuhv
private int size=0; ?h0X,fl3
g/&T[FOr
private int[] queue; !sRngXCXk?
2 QNNp:`6
public int get() { [j"9rO" +
return queue[1]; 7y`}PMn
} .)+hH y
|TE}`?y[g
public void remove() { 6O@J7P
SortUtil.swap(queue,1,size--); [lk'xzE
fixDown(1); @A+RVg*=
} !I\!;b
file://fixdown 720)VzT
private void fixDown(int k) { .@"q$\
int j; J|3E- p\o
while ((j = k << 1) <= size) { U;n*j3wT
if (j < size %26amp;%26amp; queue[j] j++; nkv(~ej(
if (queue[k]>queue[j]) file://不用交换 z`6fotL
break; $HG}[XD?
SortUtil.swap(queue,j,k); \j2;4O?`
k = j; cD4
kC>P*
} QW_agm
} Bk}><H
private void fixUp(int k) { 63!rUB!
while (k > 1) { 4 V1bLm
int j = k >> 1; kF;5L)o
if (queue[j]>queue[k]) \*\R1_+
break; !WkIi^T
SortUtil.swap(queue,j,k); Uu 7dSU
k = j; zKFp5H1!%+
} 3jogD
} ]MtFf6&
lZ&]|*>
} ?4CNkk=v
D^U:
ih
} 'O6]0l
j%V["?)
SortUtil: }<jb vCeK
Zs2-u^3&
package org.rut.util.algorithm; -S%x
wJKM
h5kPn~
import org.rut.util.algorithm.support.BubbleSort; >\<*4J$PZ
import org.rut.util.algorithm.support.HeapSort; W/=|/-\]/
import org.rut.util.algorithm.support.ImprovedMergeSort; YYg)
import org.rut.util.algorithm.support.ImprovedQuickSort; ^")F7`PF
import org.rut.util.algorithm.support.InsertSort; @^ ik[9^H
import org.rut.util.algorithm.support.MergeSort; |DF9cd^
import org.rut.util.algorithm.support.QuickSort; jy2IZ o
import org.rut.util.algorithm.support.SelectionSort; #kkY@k$4
import org.rut.util.algorithm.support.ShellSort; *pzq.#
qJR!$?
/** 3}1ssU"T
* @author treeroot lo&#(L+2
* @since 2006-2-2 EA<}[4#jS
* @version 1.0 VyG4(Xva
*/ P5QQpY{<I
public class SortUtil { _L.n,
public final static int INSERT = 1; mV9A{h
public final static int BUBBLE = 2; O$!*%TL
public final static int SELECTION = 3; _DPOyR2
public final static int SHELL = 4; \'?#i@O
public final static int QUICK = 5; o[6y+ <'o
public final static int IMPROVED_QUICK = 6; w8~K/>!f
public final static int MERGE = 7; PHM:W%g:
public final static int IMPROVED_MERGE = 8; 7q9gngT1LA
public final static int HEAP = 9; ~H@+D}J?
^%oUmwP<$
public static void sort(int[] data) { 6er(% 4!
sort(data, IMPROVED_QUICK); |E/L.gdP7
} oholt/gb+0
private static String[] name={ u>T76,8|\
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" e5v`;(^M
}; ? S=W&
:_dICxaLZT
private static Sort[] impl=new Sort[]{ GSVdb/+
new InsertSort(), IvBGpT"(I
new BubbleSort(), wod/&!)]A
new SelectionSort(), 17UK1Jx,
new ShellSort(), 0^ !Gib
new QuickSort(), f!GHEhQ9
new ImprovedQuickSort(), 8LM#WIm?
new MergeSort(), E%k7wM {
new ImprovedMergeSort(), j^u[F"
new HeapSort() Q2'eQ0W{o
}; 6517Km 4-
j64 4V|z
public static String toString(int algorithm){ $@[)nvV\
return name[algorithm-1]; MR9/Y:Nm
} x6yW:tUG5
,r+"7$
public static void sort(int[] data, int algorithm) { Etnb3<^[t
impl[algorithm-1].sort(data); JAb$M{t
} mA{#]Yvf1
=&NOHT>
public static interface Sort { a>Re^GT+z
public void sort(int[] data); b&t[S[P.V
} 2>y:N.
$Lq:=7&LRn
public static void swap(int[] data, int i, int j) { =Lw3
\5l
int temp = data; 0^<,(]!
data = data[j]; ,w\ wQn>]K
data[j] = temp; 6Dzs? P
} LDX*<(
} IKm&xzV-