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。 :Vyr8+]
插入排序: c>(`X@KL
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package org.rut.util.algorithm.support; S)h0@;q
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import org.rut.util.algorithm.SortUtil; =Q!)xEK
/** >){"x(4`
* @author treeroot /QeJ#EHn
* @since 2006-2-2 iO,_0Y4
* @version 1.0 D@cv{
_M/
*/ O0Vtvbj
public class InsertSort implements SortUtil.Sort{ c<PML|e
t'{\S_
/* (non-Javadoc) U0Y;*_>4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x/pM.NZF1
*/ }bg_?o;X}
public void sort(int[] data) { #cRw0bn:
int temp; 7oK7f=*Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :+m8~n$/
} )O~V3a
} \z4I'"MC.9
} !7KSNwGu
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} .1&~@e%=-
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冒泡排序: N4wv'OrL]
dcGs0b
package org.rut.util.algorithm.support; V*bX>D/
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import org.rut.util.algorithm.SortUtil; Y8^pgv
OZ/!=;
/** [=
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* @author treeroot
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* @since 2006-2-2 }c"1;C&{
* @version 1.0 jv
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*/ h5:>o
public class BubbleSort implements SortUtil.Sort{ m\}8N
u
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/* (non-Javadoc) yz CQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jBTXs5q
*/ H)Zb _>iV
public void sort(int[] data) { n]N+
int temp; bHi0N@W!vG
for(int i=0;i for(int j=data.length-1;j>i;j--){ oBm^RHTZ
if(data[j] SortUtil.swap(data,j,j-1); R>ak 3Y
} 1ud+~y$K
} NiCH$+c\
} WI?iz-,](
} 7I,/uv?
F>0[v|LG
}
UA{tmIC\
U%7| iK
选择排序: ~_z"So'|F_
}nQni?
package org.rut.util.algorithm.support; (L{Kg U&{$
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import org.rut.util.algorithm.SortUtil; U8T"ABvFP
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/** '>}dqp{Wr
* @author treeroot [&Z3+/lR*
* @since 2006-2-2 QEavbh^S
* @version 1.0 @-~
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*/ Qe&K
public class SelectionSort implements SortUtil.Sort { Aj9Onz,Lg
:< )"G&
/* O%g%*9
* (non-Javadoc) p;GT[Ds^
* J<
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u]B15mT?
*/ $ylQ \Y'
public void sort(int[] data) { wz,T7L
int temp; *q ?-M"K
for (int i = 0; i < data.length; i++) { Hyw T
int lowIndex = i; nZfU:N
for (int j = data.length - 1; j > i; j--) { <*g!R!
if (data[j] < data[lowIndex]) { b;N[_2
lowIndex = j; 3c"$@W:>
} g=*`6@_=
} _::q
S!
SortUtil.swap(data,i,lowIndex); =?*6lS}gy
} Lqt.S|
} &nc0stuL
cmzu
@zq
} 6O`s&T,t
LEq"g7YH
Shell排序: W-QBC-
3
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package org.rut.util.algorithm.support; /-#1ys#F=
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import org.rut.util.algorithm.SortUtil; GJUorj&
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/** Nn"[GB
* @author treeroot IZ$7'Mo86
* @since 2006-2-2 kHO2&"6
* @version 1.0 +@'{
*/ 2\$P&L
a
public class ShellSort implements SortUtil.Sort{ |M*jo<C
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/* (non-Javadoc) Zy}Qc")Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D^?jLfW8
*/ `m~x*)L#
public void sort(int[] data) { _^)Wrf+
for(int i=data.length/2;i>2;i/=2){ *Cdw"n
for(int j=0;j insertSort(data,j,i); 6I$laHx?
} LP{{PT.&X
} aUdbN&G
insertSort(data,0,1); \(nb
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} -/#VD&MJO=
SWAggW)
/** 73-*|@6
* @param data "l-L-sc,
* @param j y^rcUPLT
* @param i YF+hN\
*/ ~*3obZ2>2
private void insertSort(int[] data, int start, int inc) { 3'd(=hJ45$
int temp; ){AtV&{$
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); pJ` M5pF
} A9*( O)
} O8;`6r
} A`=;yD
pjC2jlwm*
} b7
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快速排序: >-2eZ(n)"
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package org.rut.util.algorithm.support; m;=wQYFr{I
Mp *S +Plp
import org.rut.util.algorithm.SortUtil; IL:d`Kbqf
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/** bIFKP
* @author treeroot jV(\]g"/=
* @since 2006-2-2 >&@hm4
* @version 1.0 `1cGb *b/
*/ $Hx00
h o
public class QuickSort implements SortUtil.Sort{ Q?f%]uGFQ
}(g`l)OX
/* (non-Javadoc) 1g_(xwUp+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dmq<vVxC
*/ wq|~[+y
public void sort(int[] data) { C~do*rnM^
quickSort(data,0,data.length-1); p!+7F\
} S?X2MX
private void quickSort(int[] data,int i,int j){ e&Z\hZBb
int pivotIndex=(i+j)/2; T;cyU9
file://swap Wq bfZx
SortUtil.swap(data,pivotIndex,j); ND w+bR-
59?@55
int k=partition(data,i-1,j,data[j]); -#=y
SortUtil.swap(data,k,j); u!k]Q#2ZR
if((k-i)>1) quickSort(data,i,k-1); <b-BJ2],k
if((j-k)>1) quickSort(data,k+1,j); \JJ>y
pK)*{fC$`
} p^2"g~
/** '}3m('u
* @param data T6X%.tR>`
* @param i 45Z"U<I,9
* @param j rAc
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* @return sU
{'
*/ %5N;SRtv
private int partition(int[] data, int l, int r,int pivot) { {K{&__Nk
do{ +%Vbz7+!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Bg^k~NX%
SortUtil.swap(data,l,r);
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} kmJ{(y)w
while(l SortUtil.swap(data,l,r); pUvbIbg+
return l; Qg)=4(<Hr
} (nhv#&Fd+
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} S(7_\8h
b&LfL$
改进后的快速排序: I91pX<NBf
; Nw.
package org.rut.util.algorithm.support; -Jo8jE~>V
8>:kv:MId
import org.rut.util.algorithm.SortUtil; 89I[Dg;"u
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/** V:M$-6jv
* @author treeroot 'Ii%/ Ob!
* @since 2006-2-2 O1/U3/2/d
* @version 1.0 s]=s2.=
*/ +O<0q"E
public class ImprovedQuickSort implements SortUtil.Sort { !B= Oc!e=K
VS$ZR'OP0
private static int MAX_STACK_SIZE=4096; O|#N$a&_N
private static int THRESHOLD=10; S.;>:Dd[K
/* (non-Javadoc) 9m2_zfO[w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xy@1E;
*/ n@LR?
public void sort(int[] data) { Vb|;@*=R&Q
int[] stack=new int[MAX_STACK_SIZE]; ~Rzn =>a
*>Z|!{bI
int top=-1; t6.hg3Y
int pivot; m){.{Vn]
int pivotIndex,l,r; l@+WGh
jB8n\8Bs
stack[++top]=0; O<3i6
stack[++top]=data.length-1; PZ/ gD
%G%##wv:
while(top>0){ ^!]Hm&.a
int j=stack[top--]; +ahr-v^R<
int i=stack[top--]; !/4f/g4Ze
?Rc+H;x=f
pivotIndex=(i+j)/2; Wsn}Y-x
pivot=data[pivotIndex]; RP]hW{:U
1vcI`8%S+u
SortUtil.swap(data,pivotIndex,j); M@a?j<7P,m
zu<8%
file://partition 1Aq*|JSk(
l=i-1; {(}Mu R
r=j; >wK ^W{
do{ qyP|`Pm4
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); zy(i]6
SortUtil.swap(data,l,r); 1'5I]D
ec
} <B]\&
while(l SortUtil.swap(data,l,r); &Mset^o
SortUtil.swap(data,l,j); N0be=IO5#
zcrLd={
if((l-i)>THRESHOLD){ _VU/j9<+
stack[++top]=i; CroI,=a&,
stack[++top]=l-1; gf]biE"k
} ({3hX"C@Q
if((j-l)>THRESHOLD){ VjU;[
stack[++top]=l+1; =RR225
stack[++top]=j; @l9qH1
} J@ x%TA
_C9*M6IU
} 3F,$}r#
file://new InsertSort().sort(data); e&dE>m
insertSort(data); QN[-XQ>Xt
} }?,Gn]]
/** IAt;?4
* @param data ?^i$} .%W
*/ q #f
U*
private void insertSort(int[] data) { :$&%Pxm
int temp; lAsDdxB`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +w Oa
} ,jWMJ0X/N=
} t&UPU&tY
} /#Y)nyE
M.K-)r,
} .xT8@]
s)$N&0\
归并排序: e";r_J3w
U;n$
package org.rut.util.algorithm.support; }$W4aG*[
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import org.rut.util.algorithm.SortUtil; ?45 kN=%*s
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/** ! /Z{uy
* @author treeroot <{7CS=)
* @since 2006-2-2 sDnHd9v<?t
* @version 1.0 v}hmI']yf
*/ Dm/# \y3
public class MergeSort implements SortUtil.Sort{ PMk3b3)Z
^5TSo&qZ
/* (non-Javadoc) C+-GE9=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jsSxjf;O
*/ qr%9Sdvx
public void sort(int[] data) { )rv5QH`i
int[] temp=new int[data.length]; 7<[p1C*B
mergeSort(data,temp,0,data.length-1); o+W5xHe^1
} .5I!h !
16MRLDhnD
private void mergeSort(int[] data,int[] temp,int l,int r){ ReOp,A/y
int mid=(l+r)/2; 2=X 2M
if(l==r) return ; -ea>}S
mergeSort(data,temp,l,mid); -SaH_Nuj
mergeSort(data,temp,mid+1,r); =whZ?,u1
for(int i=l;i<=r;i++){ jw$3cwddH
temp=data; 4C^;lK
} P"0S94o:5J
int i1=l; O=}4?Xv
int i2=mid+1; '~i}2e.
for(int cur=l;cur<=r;cur++){ wZVY h
if(i1==mid+1) ua1ov7w$]
data[cur]=temp[i2++]; BP2-LG&\
else if(i2>r) <va3L y)c&
data[cur]=temp[i1++]; f3e#.jan
else if(temp[i1] data[cur]=temp[i1++]; ((A]FOIbO
else U@+
@Mc
data[cur]=temp[i2++]; uR{HCZ-
} u2
a
U0k:
} (OT /o&cQ
3*$A;%q
} Uw^`_\si
Zrp`91&I
改进后的归并排序: 6_/691
Z]l<,m
package org.rut.util.algorithm.support; {hB7F"S
ghm5g/
import org.rut.util.algorithm.SortUtil; y0qrl4S)v
9Vz1*4Ln
/** h)BRSs?v_D
* @author treeroot Q[^IX
* @since 2006-2-2 zCKZv|j6
* @version 1.0 {J q[N}
*/ T;jp2 #
public class ImprovedMergeSort implements SortUtil.Sort { 7''l\3mIn
kH1hsDe|&y
private static final int THRESHOLD = 10; Z<ozANbk
S (](C
/* $5y%\A
* (non-Javadoc) %pgie"k
* jr{C/B}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $$~x: iN
*/ !7!xJ&/V
public void sort(int[] data) { /2-S/,a
int[] temp=new int[data.length]; v!?bEM3D
mergeSort(data,temp,0,data.length-1); n'=-bj`
} (&0%![j&
8R Wfv}:X
private void mergeSort(int[] data, int[] temp, int l, int r) { ;T~]|#T\6
int i, j, k; |cStN[97%
int mid = (l + r) / 2; }$3eRu +
if (l == r) K^`3Bg
return; #k8bZ?*:
if ((mid - l) >= THRESHOLD) C4],7"Sw
mergeSort(data, temp, l, mid); BL<.u
else Pcut#8?
insertSort(data, l, mid - l + 1); <y=VDb/
if ((r - mid) > THRESHOLD) `,d*>
mergeSort(data, temp, mid + 1, r); X=_pQ+j`^
else wEENN_w
insertSort(data, mid + 1, r - mid); gO%#'Eb2
,ii*[{X?
for (i = l; i <= mid; i++) { "Wr5:T-;
temp = data; c4ptY5R),
} $A"kHS7T
for (j = 1; j <= r - mid; j++) { KJ<7aZ
temp[r - j + 1] = data[j + mid]; y0cHs|8
} Twyx(~'&R
int a = temp[l]; R/r)l<X@
int b = temp[r]; 5=tvB,Ux4
for (i = l, j = r, k = l; k <= r; k++) { 3TqC.S5+
if (a < b) { By {zX,6'
data[k] = temp[i++]; A<l8CWv[
a = temp; jZeY^T)f"
} else { tGnBx)J|
data[k] = temp[j--]; #pu6^NTK
b = temp[j]; XJy~uks,
} zb.^ _A
} "OF4#a17
} !spp*Q)#\
Ig75bZz
/** occ^bq
* @param data OQMkpX-dH
* @param l I&~kwOP
* @param i \Zz"%i
*/ 0 3fCn"
private void insertSort(int[] data, int start, int len) { exw~SvT3
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); JP`$A
} &C<K|F!j!
} cHOtMPyQ
} MTo<COp($
} nmZz`P9g
73B,I 0U
堆排序: "V-k_d "
>nV~5f+
package org.rut.util.algorithm.support; A^:[+PJHN
>Jh*S`e
import org.rut.util.algorithm.SortUtil; F8M&.TE_3
y\Kr@;q0w
/** H"czF
* @author treeroot K}"xZy Tm1
* @since 2006-2-2 KBJw7rra
* @version 1.0 XWN
ra
*/ <WFA3
public class HeapSort implements SortUtil.Sort{ G n"]<8yl~
|N_tVE
/* (non-Javadoc) m3W:\LTTp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ST$~l7p
*/ g^|}e?
public void sort(int[] data) { !.1oW(
MaxHeap h=new MaxHeap(); ^Pl(V@
h.init(data); Oxs O
for(int i=0;i h.remove(); }a?PBo`
System.arraycopy(h.queue,1,data,0,data.length); D\|$!i}
} m=D2|WA8
yO*~)ALb+
private static class MaxHeap{ NRu_6~^^
i
,Cvnp6Lv
void init(int[] data){ eKjmU | H
this.queue=new int[data.length+1]; .j?`U[V%a
for(int i=0;i queue[++size]=data; %@tKcQ
fixUp(size); !>QS746S@
} HS> (y2}'
} !/]F.0
>qj.!npQD
private int size=0; M)S(:Il6Xx
z~&uLu
private int[] queue; -^sW{s0Rc
`roos<F1D
public int get() { <
kyT{[e+6
return queue[1]; Zjqa n
} 3FRz&FS:j
ro|mWP0
public void remove() { -]""Jl^
SortUtil.swap(queue,1,size--); Zjis0a]v~k
fixDown(1); MMlryn||1
} kQ~2mU
file://fixdown {!!df.h
private void fixDown(int k) { E;!pK9wL|
int j; |^fubQs;2
while ((j = k << 1) <= size) { <xM$^r)
if (j < size %26amp;%26amp; queue[j] j++; DfYOGs]@
if (queue[k]>queue[j]) file://不用交换 3ARvSz@5
break; Gk_%WY*
SortUtil.swap(queue,j,k); Z]?Tx2|7
k = j; N(i%Oxp1
} q#LB 2M
} >[t0a"
private void fixUp(int k) { ^u'hl$`^
while (k > 1) { "XPBNv\>_
int j = k >> 1; $VEG1]/svp
if (queue[j]>queue[k]) _|<kKfd?
break; l-s%3E3
SortUtil.swap(queue,j,k); PPoQNW
k = j; k=;>*:D%
} p7 s#j
} 8VG6~>ux'>
^n8ioL\*i
} +m?;,JGt
&\<!{Y<'
} MJ5Ymt a
FY;\1bt<<
SortUtil: MTBHFjXO
k3[rO}>s
package org.rut.util.algorithm; u.v
5!G
#,dNhUV#
import org.rut.util.algorithm.support.BubbleSort; ?%RAX CK
import org.rut.util.algorithm.support.HeapSort; be&5vl
import org.rut.util.algorithm.support.ImprovedMergeSort; L8OW@)|
import org.rut.util.algorithm.support.ImprovedQuickSort; 6Gt~tlt:L
import org.rut.util.algorithm.support.InsertSort; [zXKS|
import org.rut.util.algorithm.support.MergeSort; VnlgX\$}
import org.rut.util.algorithm.support.QuickSort; )ph**g
import org.rut.util.algorithm.support.SelectionSort; L1J \C
import org.rut.util.algorithm.support.ShellSort; /V'^$enK!}
U@t"o3E
/** Xjb 4dip
* @author treeroot 8yW 8F26
* @since 2006-2-2 wyzx9`5~d
* @version 1.0 2n]UNC
*/ }YV,uJH[
public class SortUtil { !`kX</ha.
public final static int INSERT = 1; 7#
>;iGuz
public final static int BUBBLE = 2; %v}SJEXFp
public final static int SELECTION = 3; ggluQGA
public final static int SHELL = 4; 2_S%vA<L
public final static int QUICK = 5; 2MT_5j5[N
public final static int IMPROVED_QUICK = 6; lT.Q)(
public final static int MERGE = 7; t<~WDI|AN
public final static int IMPROVED_MERGE = 8; y{&k`H
public final static int HEAP = 9; :~uvxiF
Yz<,`w5/6~
public static void sort(int[] data) { dA,irb I0W
sort(data, IMPROVED_QUICK); %>,B1nt
} F;
upb5
private static String[] name={ zzlqj){F
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" JFOto,6L:
}; XKp$v']u
E`E$ }iLs
private static Sort[] impl=new Sort[]{ bBx.snBK
new InsertSort(), b:%z<vo
new BubbleSort(), fPXMp%T!
new SelectionSort(), \.0cA4)[$
new ShellSort(), TFZvZi$u&
new QuickSort(), "n<rP 3y
new ImprovedQuickSort(), 7JC^+rk
new MergeSort(), l>(w]
new ImprovedMergeSort(), )q.Z}_,)@
new HeapSort() P:~Xaz\F
}; K&L9Ue
|X}H&wBWo
public static String toString(int algorithm){ j[E8C$lW
return name[algorithm-1]; U2Uf69R
} 7CKpt.Sz6
cZ8lRVaWW
public static void sort(int[] data, int algorithm) { |\HYq`!g%7
impl[algorithm-1].sort(data); x"N{5
} g>k"R4
`2WtA_
public static interface Sort { ^Rel-=Z$B
public void sort(int[] data); VV_Zrje
} [G.4S5FX.]
0<g;g%
public static void swap(int[] data, int i, int j) { =D&xw2
int temp = data; 8`\^wG$W
data = data[j]; i|`b2msvd
data[j] = temp; O"'.n5>:`
}
24Y8n
} 8S8^sP