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。 !Dc?9W!b
插入排序: G0:<#?<5
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package org.rut.util.algorithm.support; DOtz
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import org.rut.util.algorithm.SortUtil; g&/lyQ+G
/** VB/75xK_
* @author treeroot EIzTbW{p
* @since 2006-2-2 &O+S[~
* @version 1.0 -U>)B
*/ i8Be%y%y
public class InsertSort implements SortUtil.Sort{ 3U?gw!M>
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/* (non-Javadoc) :Hitx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ y46sL~HRv
public void sort(int[] data) { 8B6(SQp%
int temp; /tkV/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S8;c0}-
} vKoQ!7g
} 1|
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} M&Q&be84
*@lVesC2
} Q%'4jn?H
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冒泡排序: $!'Vn)Z7
Tw/7P~*
package org.rut.util.algorithm.support; 'yOx&~H]
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import org.rut.util.algorithm.SortUtil; U>n.+/ss
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/** (8S+-k?
* @author treeroot <vg|8-,#m
* @since 2006-2-2 =*(_sW6;
* @version 1.0 5#_GuL%
*/ }+NlYD:qF
public class BubbleSort implements SortUtil.Sort{ A@.ruG$
}e"2Nc_UG
/* (non-Javadoc) 4.%/u@rAi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '&AeOn
*/ 4tiCxf)
public void sort(int[] data) { bA"*^"^
int temp; B&3@b
for(int i=0;i for(int j=data.length-1;j>i;j--){ i[vN3`*B
if(data[j] SortUtil.swap(data,j,j-1); U z)G Y
} 6XhS
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} l>Zp#+I-
} p|>/Hz1v
} 0ZAtBq.s
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} B`%%,SLJ
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选择排序: 7bW''J*6
Xs4G#QsAJ
package org.rut.util.algorithm.support; UD'e%IVw
"X1{*
import org.rut.util.algorithm.SortUtil; oM}P Wf-
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/** !E/%Hv1
* @author treeroot Wf
*b"#
* @since 2006-2-2 uc;,JX!bN
* @version 1.0 H? pWyc<,
*/ f;W>:`'
public class SelectionSort implements SortUtil.Sort { `ucr;P
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/* rI1;>/Ir
* (non-Javadoc) %lK]m`(
* / ='/R7~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X@7e7
*/ c:`&QDF
public void sort(int[] data) { u/74E0$S
int temp; 8!dA1]2;
for (int i = 0; i < data.length; i++) { DO=zxdTI!
int lowIndex = i; T$xY]hqr
for (int j = data.length - 1; j > i; j--) { T EqCoeR
if (data[j] < data[lowIndex]) { \CE8S+Z%
lowIndex = j; $30lNZK1m8
} %xI,A '#
} GfT`>M?QGK
SortUtil.swap(data,i,lowIndex); DadlCEZv
} 9k!#5_ M
} ?IV3"\5
?)#}Nj<R
} 2f@gR9T
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Shell排序: W 7Y5~%@
T#sKld
package org.rut.util.algorithm.support; \lpR+zaF
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import org.rut.util.algorithm.SortUtil; sHulaX{
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/** 9y"*H2$#
* @author treeroot !pLQRnI}6
* @since 2006-2-2 y"SVZ} ;|
* @version 1.0 '|i<?]U
*/ hpJi,4r.d
public class ShellSort implements SortUtil.Sort{ LHz-/0[
sP5\R#
/* (non-Javadoc) [SJ*ks,]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Nv*ePz
*/ vrD]o1F
public void sort(int[] data) { Cuq=>J
for(int i=data.length/2;i>2;i/=2){ @bj3N
for(int j=0;j insertSort(data,j,i); z@3t>k|K
} 1x#Z}XG
} |};P"&
insertSort(data,0,1); V'4sOn
} 8D U|j-I8
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/** TPrqb
* @param data iIoeG_^*Y
* @param j +AyrKs?h
* @param i N%\!eHxy
*/ $5`P~Q'U
private void insertSort(int[] data, int start, int inc) { @e_ bG@
int temp; 9a5x~Z:'
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ee.#Vhz
} #?Z>o16,u
} Oozt&* F
} 9""e*-;Mi
?[}r& f
} MV<2x7S
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快速排序: Pvq74?an`
%OeA"#
package org.rut.util.algorithm.support; I65W^b4y
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import org.rut.util.algorithm.SortUtil; |#);^z_
b Z0mK$B
/** J2M[aibV
* @author treeroot I5l5fx
* @since 2006-2-2 "/e:V-W
* @version 1.0 G'oMZb ({=
*/ "#d>3M_
public class QuickSort implements SortUtil.Sort{ ?CgqHmf\\(
WleE$ ,
/* (non-Javadoc) ]uN}n;`12
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EIqe|a+
*/ )aov]Ns
public void sort(int[] data) { n
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quickSort(data,0,data.length-1); 7{%_6b"
} ,Q8[Ur?G
private void quickSort(int[] data,int i,int j){ 1PD{m{
int pivotIndex=(i+j)/2; @kCFc}
file://swap 6ge,2[PU
SortUtil.swap(data,pivotIndex,j); /a}F;^
W_:3Sj l'
int k=partition(data,i-1,j,data[j]); a:*8SovI
SortUtil.swap(data,k,j); _?"P<3/iF
if((k-i)>1) quickSort(data,i,k-1); z']TRjDbT
if((j-k)>1) quickSort(data,k+1,j); "]1 !<M6\i
zPzy0lx
} Ah5`Cnv
/** ZG29q>
* @param data eD4D<\*
* @param i tk'1o\@p9b
* @param j xeo5)
* @return d??;r:
*/ |]--sUx:
private int partition(int[] data, int l, int r,int pivot) { lyY\P6
X
do{ 87; E#2
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *3.K; Ic;
SortUtil.swap(data,l,r); >KPxksFR8
} BbU%p
while(l SortUtil.swap(data,l,r); S$~T8_m^U
return l; N|JML
} +rAmy
-|K^!G
} uX82q.u_y
PIk2mX/D_6
改进后的快速排序: s7(NFX5
Qt-7jmZw1
package org.rut.util.algorithm.support; k
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import org.rut.util.algorithm.SortUtil; * {avx
B* 0TM+
/** JRti2Mu
* @author treeroot >:o$h2
* @since 2006-2-2 (G1KMy
* @version 1.0 rra|}l4Y
*/ Dq07Z^#'
public class ImprovedQuickSort implements SortUtil.Sort { 77 g<`}{
wh Hp}r
private static int MAX_STACK_SIZE=4096;
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private static int THRESHOLD=10; |Y-{)5/5}
/* (non-Javadoc) GZefeBi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DT;n)7+,
*/ /penB[1i
public void sort(int[] data) { 6Qc
*:(GE
int[] stack=new int[MAX_STACK_SIZE]; qjr:(x /
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int top=-1; 'c7'iDM
int pivot; B4
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int pivotIndex,l,r; et`1#_o
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stack[++top]=0; ,=a+;D]'
stack[++top]=data.length-1; dI(1L~
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while(top>0){ } yb"/jp
int j=stack[top--]; 5'<J@3B
int i=stack[top--]; ;NoiH&
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pivotIndex=(i+j)/2; 2%?Kc]JY9
pivot=data[pivotIndex]; Lo<WK
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SortUtil.swap(data,pivotIndex,j); ~XeWN^l(Ov
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file://partition ~0@uR
l=i-1; !U7}?i&H
r=j; H'"=C&D~
do{ Od("tLIO}I
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #Zg pm"MW
SortUtil.swap(data,l,r); l NLa:j
} |4C5;"P c
while(l SortUtil.swap(data,l,r); RRb>]oD
SortUtil.swap(data,l,j); %ONU0xtq k
)%JjV(:
if((l-i)>THRESHOLD){ 8kf5u#,'
stack[++top]=i; 1f+z[ad&^
stack[++top]=l-1; !ra,HkU'
} **CGkL
if((j-l)>THRESHOLD){ HGao} @'
stack[++top]=l+1; M?00n< vM
stack[++top]=j; ?!.L#]23f
} /pC60y}O0
en"\2+{Cg
} vkLKzsN' ]
file://new InsertSort().sort(data); I{$TMkh[
insertSort(data); k?}y@$[)
} 0Of6$`
/** Doe:m#aNj
* @param data 58t_j54
*/ Hf+oG
private void insertSort(int[] data) { )+Yu7=S
int temp; +V9 (4la
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8{
+KNqz
} YIs_.CTi
} Gs>4/
} @dn&M9Z
$Ji;zR4,
} ,T-xuNYC
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归并排序: eF(oHn,
9aYVbq""
package org.rut.util.algorithm.support; I%jlM0ZUI"
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import org.rut.util.algorithm.SortUtil; KP`Pzx
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/** *|^||
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* @author treeroot Rw<O%i5/d
* @since 2006-2-2 !ZM*)6^
* @version 1.0 FP")$
,=s
*/ DB0?H+8t
public class MergeSort implements SortUtil.Sort{ / <+F/R'=O
JH#p;7;
/* (non-Javadoc) RJ-J/NhWyI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sT,*<^
*/ [sK'jQo-[1
public void sort(int[] data) { S
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int[] temp=new int[data.length]; }%c0EY'
mergeSort(data,temp,0,data.length-1); Y=/;7T
} $,o@&QT?AT
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private void mergeSort(int[] data,int[] temp,int l,int r){ 1I%niQv5t
int mid=(l+r)/2; Q6p75$SVq
if(l==r) return ; 4 g8t
mergeSort(data,temp,l,mid); PB#EU9
mergeSort(data,temp,mid+1,r); Y pvFv-
for(int i=l;i<=r;i++){
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temp=data; Icx)+Mq
} bRJ]avR
int i1=l; u}7r\MnwK,
int i2=mid+1; 8\bZ?n#dn
for(int cur=l;cur<=r;cur++){ S-79uo
if(i1==mid+1) Yez
data[cur]=temp[i2++]; =j@8/
else if(i2>r) 91ec^g
data[cur]=temp[i1++]; ;I>77gi`]
else if(temp[i1] data[cur]=temp[i1++]; p+;x&h)[l
else N::.o+1
data[cur]=temp[i2++]; lWFm>DiLY
} 0C717
} &>Z p}.V
scZ'/(b-E
} ;n b>IL
KA."[dVa
改进后的归并排序: nz`"f,
|99Z&
<8f
package org.rut.util.algorithm.support; h)T-7b
9!wm`'G8
import org.rut.util.algorithm.SortUtil; &.:yP3
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/** 4OdK@+-8U
* @author treeroot _LLE~nUK"/
* @since 2006-2-2 m
A|"
* @version 1.0 DO?
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*/ [~ |e:
public class ImprovedMergeSort implements SortUtil.Sort { Y0nuwX*{
nHB`<B
private static final int THRESHOLD = 10; l5_%Q+E_
nb|"dK|
/* D"n
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* (non-Javadoc) 1;9 %L@
* G$
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,DbT4Ul c
*/ Uf-`g>
public void sort(int[] data) { [>f4&yY
int[] temp=new int[data.length]; Y&DC5T]
mergeSort(data,temp,0,data.length-1); :6Sb3w5h
} |p+ xM
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private void mergeSort(int[] data, int[] temp, int l, int r) { yO09NQ 5u
int i, j, k; `!g
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int mid = (l + r) / 2; -\=kd {*B
if (l == r) Yim` 3>#t
return; AT,?dxP J
if ((mid - l) >= THRESHOLD) &:*|K xX
mergeSort(data, temp, l, mid); [+v}V ,jb
else f<G:}I
insertSort(data, l, mid - l + 1); eEkbD"Q
if ((r - mid) > THRESHOLD) b."1p7'
mergeSort(data, temp, mid + 1, r); cX/["AM
else v:$Y
|mh
insertSort(data, mid + 1, r - mid); zbL6TP@=
FzGla} )
for (i = l; i <= mid; i++) { ~WG#Zci-
temp = data; 2*1s(Jro
} t Sf`
for (j = 1; j <= r - mid; j++) { (Dx]!FFz
temp[r - j + 1] = data[j + mid]; A PR%ZpG
} D2}nJFR
]
int a = temp[l]; oXkxd3
int b = temp[r]; ,, G6L{&Z
for (i = l, j = r, k = l; k <= r; k++) { +Ss|4O}'
if (a < b) { ?(CMm%(8
data[k] = temp[i++]; _'E,g@
a = temp; -3T6ck
} else { X pd^^
data[k] = temp[j--]; GlVD!0
b = temp[j]; ]OOL4=b
} >_$DKY>$`
} v+|N7
} 5? s$(Lt~
Gm.n@U p
/** @u2nG:FG
* @param data @E$PjdB5M
* @param l {>cO&eiCt
* @param i \5_7!.
*/ 0iX;%SPYz
private void insertSort(int[] data, int start, int len) { rsR0V+(W
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "3v[\M3
} n(b(H`1n
} 5Qik{cWxBq
} 8]N+V:
} \@4_l?M
T}X#I'Z
堆排序: rQbL86+
iG*/m><-
package org.rut.util.algorithm.support; +]Y&las
|Y!#`
import org.rut.util.algorithm.SortUtil; "Kz=ZC
sSi1;9^o
/** ^Q]*CU+C
* @author treeroot lV-7bZ
* @since 2006-2-2 ":*PC[)W
* @version 1.0 Poacd;*
*/ */n)_
public class HeapSort implements SortUtil.Sort{ 0EYK3<k9!
ho_;;y
/* (non-Javadoc) )>Oip
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @#}9?>UV
*/ !p1OBS|
public void sort(int[] data) { `av8|;
MaxHeap h=new MaxHeap(); $L.0$-je4
h.init(data); B3'qmi<
for(int i=0;i h.remove(); l,*v/95h
System.arraycopy(h.queue,1,data,0,data.length); ky#d`
} a4X J0Tm
T"'"T]^
X
private static class MaxHeap{ glh2CRUj
I;L$Nf{v
void init(int[] data){ 4em7PmT
this.queue=new int[data.length+1]; sf]y\_zU
for(int i=0;i queue[++size]=data; TdP_L/>|J
fixUp(size); O9]j$,i
} (
=->rP
}
= Ow}MX
>/EmC3?b!
private int size=0; j_\sdH*r
Ywt_h;:
private int[] queue; J
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public int get() { dh%C@n:B
return queue[1]; x$AF0xFO
} +M
(\R?@gr
;'dw`)~jQ
public void remove() { 6!/e_a
SortUtil.swap(queue,1,size--); ,Z#t-?
fixDown(1); Q$W0>bUP
} U}6'_ PRQ
file://fixdown KSuP'.l
private void fixDown(int k) { rOB-2@-
int j; &7T0nB/)
while ((j = k << 1) <= size) { WYwsTsG{_
if (j < size %26amp;%26amp; queue[j] j++; UMo=bs
if (queue[k]>queue[j]) file://不用交换 x';6
break; 6CLrP}
u
SortUtil.swap(queue,j,k); (}"r 5
k = j; %]>c4"H
} r`i<XGPJ%
} Mvrc[s+o
private void fixUp(int k) { $B*E k>EK
while (k > 1) { b'O>&V`
int j = k >> 1; Tm_AoZH
if (queue[j]>queue[k]) WDSkk"#TF
break; 4t|g G`QW7
SortUtil.swap(queue,j,k); Yp./3b VO
k = j; R"Hhc(H
} D.j'n-yw
} OTL=(k
lOPCM1Se
} Eg 5|XV
nE+sbfC
} R?Ki~'k=
iT%aAVs
SortUtil: qWGnIPk
?7@B$OlU
package org.rut.util.algorithm; c\-5vw||b
X7?p$!M6;B
import org.rut.util.algorithm.support.BubbleSort; %8>s :YG
import org.rut.util.algorithm.support.HeapSort; 5.]+K<:h"A
import org.rut.util.algorithm.support.ImprovedMergeSort; S WVeUL#5
import org.rut.util.algorithm.support.ImprovedQuickSort; [95(%&k.Q
import org.rut.util.algorithm.support.InsertSort; ,_r"=>?@
import org.rut.util.algorithm.support.MergeSort; \$/)o1SG
import org.rut.util.algorithm.support.QuickSort; 7!#x-KR~5
import org.rut.util.algorithm.support.SelectionSort; G`8gI)$u
import org.rut.util.algorithm.support.ShellSort; JWr:/?
6,G1:BV{K
/** VtUe$ft
* @author treeroot e ,/I}W
* @since 2006-2-2 j5|_SQOmt
* @version 1.0 1Zx|SBF
*/ 2BXpk^d5y
public class SortUtil { 6B)(kPW
public final static int INSERT = 1; ;3U-ghj
public final static int BUBBLE = 2; {2vk<
public final static int SELECTION = 3; @ H=
d8$
public final static int SHELL = 4; ]iRE^o6
public final static int QUICK = 5; YFv/t=`
public final static int IMPROVED_QUICK = 6; S 3Tp__
public final static int MERGE = 7; QzPq^
public final static int IMPROVED_MERGE = 8; {(w/_C9
public final static int HEAP = 9; o%i^t4J$e
(wEaa'XL
public static void sort(int[] data) { mM!'~{r[-
sort(data, IMPROVED_QUICK); T1m"1Q
} {E-.W"t4
private static String[] name={ ];Z)=y,vM
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" u =z$**M^
}; +D[|L1{xb
6v(}<2~
private static Sort[] impl=new Sort[]{ .+MJ' bW
new InsertSort(), _Db=I3.HJ
new BubbleSort(), y >r7(qg
new SelectionSort(), dF:@BEo
new ShellSort(), {YC!pDG
new QuickSort(), 'MRvH
lCM
new ImprovedQuickSort(), oGM Ls
new MergeSort(), /x,gdZPX
new ImprovedMergeSort(), ^q5~;_z|
new HeapSort() k"\%x=#
}; Aayh'xQ
_*7h1[,{f
public static String toString(int algorithm){ [bk2RaX:i
return name[algorithm-1]; [zl@7X1{_
} :i_818h!?[
3I&=1o
public static void sort(int[] data, int algorithm) { {a^A-Xh[u
impl[algorithm-1].sort(data); #"-?+F=rk
} D9,609w
BZejqDr*
public static interface Sort { lffp\v{w
public void sort(int[] data); Gdmh#pv
} IROX]f}r (
]E'BFon
public static void swap(int[] data, int i, int j) { vw5f.8T;w
int temp = data; 6r!
Y ~\@
data = data[j]; +^ a9i5
data[j] = temp; O4RNt,?l
} psyxNM=dN#
} CF"$&+ s9