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。 NK.] yw'
插入排序: KvW{M
P0,@#M&
package org.rut.util.algorithm.support; L q<#
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import org.rut.util.algorithm.SortUtil; 1S
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/** 1\K%^<QY
* @author treeroot ] }XsP
* @since 2006-2-2 706-QE^
* @version 1.0 Dz4e.tvN
*/ tGv5pe*r
public class InsertSort implements SortUtil.Sort{ FY1
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/* (non-Javadoc) =?hGa;/rb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) },<(VhP
*/ %X)w$}WH
public void sort(int[] data) { MHNuA,cz
int temp; 91'i7&~xdG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); KG7 ~)g
} %i[G6+-
} d^AXhQjQN-
} }Fs;sfH
*9Eep~ 6
} lr[U6CJY
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冒泡排序: _M[@a6?
!0i6:2nw
package org.rut.util.algorithm.support; t&m8 V$Q
} o^VEJc`O
import org.rut.util.algorithm.SortUtil; KU:RS+,e;
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/** TKJs'%Q7F6
* @author treeroot !7)` g i
* @since 2006-2-2 !C ]5_
* @version 1.0 IkW8$>
*/ I|&<!{Rq
public class BubbleSort implements SortUtil.Sort{ pK/r{/>r
uW4)DT9[5
/* (non-Javadoc) ,i0Dw"/u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PX!$w*q
*/ 8x":7 yV&
public void sort(int[] data) { D XFU~J*
int temp; i" 0]L5=P
for(int i=0;i for(int j=data.length-1;j>i;j--){ !' ;1;k);
if(data[j] SortUtil.swap(data,j,j-1); ,6N|?<26O
} FO[x
c;
} iN\m:m
} EyU 5r$G
} I'W`XN
MPa F
} `p qj~s
~@Yiwp\"
选择排序: (.r9bl
R-%v??
package org.rut.util.algorithm.support; &|6 A
8,
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import org.rut.util.algorithm.SortUtil; #GoZH?MAF
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/** s0EF{2<F
* @author treeroot OGA_3|[S
* @since 2006-2-2 .AHf]X0
* @version 1.0 al#BfcZW
*/ =17d7#-
public class SelectionSort implements SortUtil.Sort { R9+0ZoS
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/* lk/T|0])
* (non-Javadoc) vMD%.tk
* Ddu1>"p-x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F"|OcKAA}h
*/ *yX5g,52-|
public void sort(int[] data) { VPC7Dh%.
int temp; TPE1}8p17
for (int i = 0; i < data.length; i++) { ?LxBH-o(
int lowIndex = i; %X|fp{C
for (int j = data.length - 1; j > i; j--) { _mBFmXHHS$
if (data[j] < data[lowIndex]) { Z+8Q{|Ev
lowIndex = j; &7-ENg9 [
} A[7\!bq5
} w;
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SortUtil.swap(data,i,lowIndex); &|]GTN`E
} 8D]&wBR:
} 9-B/n0
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} ~-J!WC==U
,_wpYTl*X
Shell排序: | XGj97#M
^pc?oDPSg
package org.rut.util.algorithm.support; frh!dN
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import org.rut.util.algorithm.SortUtil; qpt},yn)C
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/** fpPB_P{Ua
* @author treeroot U))2?#
* @since 2006-2-2 #B$r|rqamq
* @version 1.0 J=l\t7w
*/ :abpht
public class ShellSort implements SortUtil.Sort{ >Tf <8r,
TWU[/>K
/* (non-Javadoc) +hZ{/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qpEK36Js
*/ XJSI/jpa@
public void sort(int[] data) { &mPR[{
for(int i=data.length/2;i>2;i/=2){ H6.
for(int j=0;j insertSort(data,j,i); L\cbY6b
} XI5TVxo(q
} \Bvy~UeE)>
insertSort(data,0,1); $wm.,Vb
} ##QKXSD
>2^|r8l5
/** <V
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* @param data S%Bm4jY
* @param j l_lK,=cLj+
* @param i px=k&|l
*/ j9sLR
private void insertSort(int[] data, int start, int inc) { ~@H9h<T
int temp; Y2!P!u+Q
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); HKXtS>7d
} 0Yo(pW,k
} hY(q@_s
} #qcF2&a%
EYy|JT]B
} }i F|NIV
ZUd*[\F~!
快速排序: i6-&$<
vEZd;40y
package org.rut.util.algorithm.support; XS_Ib\-50
}C'h<%[P
import org.rut.util.algorithm.SortUtil; 0l'"idra
Ly_.%f
/** qDK\MQ!
* @author treeroot .L=C7 w1
* @since 2006-2-2
=7vbcAJ\
* @version 1.0 D,,$
*/ !h.bD/?K
public class QuickSort implements SortUtil.Sort{ P3_&(
@-% .+
/* (non-Javadoc) e_h`x+\:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :c3'U_H^
*/ p5V.O20
public void sort(int[] data) { ']^_W0?=
quickSort(data,0,data.length-1); .t9*wz
} ":vF[6K6
private void quickSort(int[] data,int i,int j){ 3bK=Q3N
int pivotIndex=(i+j)/2; EJm*L6>@R&
file://swap 1\LK[tvh
SortUtil.swap(data,pivotIndex,j); @tfatq+q
/I@`B2
int k=partition(data,i-1,j,data[j]); Y{`hRz`
SortUtil.swap(data,k,j); aSMSuX8
if((k-i)>1) quickSort(data,i,k-1); XJguw/[wm
if((j-k)>1) quickSort(data,k+1,j); +rOfQ'lQ
Pm=i(TBS/
} q+1SU6x'm
/** 52v@zDY
* @param data A5 <T7~U
* @param i nK>D& S_!
* @param j (@3?JJ]1
* @return r34 GO1d
*/ J]gtgt^
private int partition(int[] data, int l, int r,int pivot) { ZK?:w^Z
do{ j=V2~
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Lv<)Dur0K
SortUtil.swap(data,l,r); 3BK_$Fy
} g7`uWAxZa
while(l SortUtil.swap(data,l,r); lfe^_`ij(+
return l; "*oN~&flc
} 'l41];_
;Ebpf J
} &^JYIRn1\
VCCG_K9'
改进后的快速排序: f'&
lFc4| _c g
package org.rut.util.algorithm.support; z\6/?5D#v
L.$+W}
import org.rut.util.algorithm.SortUtil; kT,2eel
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/** _/RP3" #
* @author treeroot e*/ya 8p?
* @since 2006-2-2 'k!V!wcD^y
* @version 1.0 5imqZw
*/ ghVxcK
public class ImprovedQuickSort implements SortUtil.Sort { ,}HnS)+
od`:w[2\
private static int MAX_STACK_SIZE=4096; :}[[G2|9
private static int THRESHOLD=10;
j.vBld
/* (non-Javadoc) w*qmC<D$A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I3D#wXW
*/ //H3{^{
public void sort(int[] data) { ba"a!#wA
int[] stack=new int[MAX_STACK_SIZE]; xO XCCf/
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int top=-1; r/BiR0$E
int pivot; >a5avSn
int pivotIndex,l,r; K0\Wty0
3I.0uLjg^
stack[++top]=0; d+Bz
pS@p
stack[++top]=data.length-1; cwKOE?!
-nKBSls
while(top>0){ J6*B=PX=(
int j=stack[top--]; T7!=KE_z
int i=stack[top--]; n+;PfQ|
#zv'N
pivotIndex=(i+j)/2; Xn:ac^
pivot=data[pivotIndex]; (??|\
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sow/JLlbC
SortUtil.swap(data,pivotIndex,j); "K$
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\`: LPe
file://partition ICI8xP}a?
l=i-1; y1zep\-D
r=j; Ea2&7
do{ K#],4OG
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *3W e5
SortUtil.swap(data,l,r); KqT~MPl
} n\D3EP<s
while(l SortUtil.swap(data,l,r); D:Y`{ {
SortUtil.swap(data,l,j); /DQcM.3
OJ\rT.{
if((l-i)>THRESHOLD){ u#m(Py
stack[++top]=i; )#n>))
stack[++top]=l-1; !WReThq
} ^Wz3 q-^
if((j-l)>THRESHOLD){ u:7=Yy
:
stack[++top]=l+1; _ Oe|ZQ
stack[++top]=j; ;q&\>u:
} UZUG?UUM
ds9`AiCW>
} 3`aJ"qQE
file://new InsertSort().sort(data); ,*$/2nB^
insertSort(data); Bt^];DjH
} `[J(au$z
/** #O.-/&Z
* @param data b1{XGK'
*/ .cX,"2;n
private void insertSort(int[] data) { lZupn?
int temp; AFcA5:ja
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E~|`Q6&Y
} i|Y_X
} =7Y gES
} 4$+9k;m'
n! (g<"
} Q,A`"e#:
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归并排序: @9rmm)TZ
B<Ynx_95
package org.rut.util.algorithm.support; V-(LHv
d#eHX|+
import org.rut.util.algorithm.SortUtil; m'%Z53&
^(0tNX/XD
/** OWK)4[HY(
* @author treeroot \T_?<t,UT
* @since 2006-2-2 HG%H@uK
* @version 1.0 IJn r^S8
*/ jdY v*/^
public class MergeSort implements SortUtil.Sort{ f-tV8
q61
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/* (non-Javadoc) =w.#j-jR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g loo].z
*/ Gr;~P*
public void sort(int[] data) { (A*r&Ak[
int[] temp=new int[data.length]; "Rp ]2'?
mergeSort(data,temp,0,data.length-1); $u4esg
} nA]dQ+5sT
C"IP1N
private void mergeSort(int[] data,int[] temp,int l,int r){ Hvq< _&2
int mid=(l+r)/2; 0OMyE9jJJ
if(l==r) return ; []Z| *+=Q
mergeSort(data,temp,l,mid); qt}[M|Q^r
mergeSort(data,temp,mid+1,r); yf=ek==
for(int i=l;i<=r;i++){ ~j\/3;^s
temp=data; ;6 1m
} t747SZWgB
int i1=l; vN7ihe[C
int i2=mid+1; 9CWUhS
for(int cur=l;cur<=r;cur++){ o+O\VNW
if(i1==mid+1) 8[FC
data[cur]=temp[i2++]; FK#>E[[
else if(i2>r) lm&C!{K
data[cur]=temp[i1++]; ~::gLm+f
else if(temp[i1] data[cur]=temp[i1++]; 9&W\BQ
else 7OOB6[.fu
data[cur]=temp[i2++]; 3RRZVc*
^
} ,U'Er#U
} /d >fp
Z3R..vy8
} )vS##-[_
A?;/]m;
改进后的归并排序: r DY q]`
*k'9 %'<
package org.rut.util.algorithm.support; j86s[Dty
r\[HR ^`
import org.rut.util.algorithm.SortUtil; )M]4p6Y
zoOm[X=?3
/** ?XGZp?6
* @author treeroot 3MjMN %{P
* @since 2006-2-2 ;:9 x.IkxC
* @version 1.0 va;d[D,
*/ (cYc03"
public class ImprovedMergeSort implements SortUtil.Sort { &/\0_CoTR\
-JZl?hY(
private static final int THRESHOLD = 10; ZrA\a#z"<
5H 1(C#|
/* <UQ:1W8>B
* (non-Javadoc) 7B%@f9g
* xm YA/wt8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cp?`\P
*/ mc(&'U8R0I
public void sort(int[] data) { YQN=.Wtc
int[] temp=new int[data.length]; \lR~!6:
mergeSort(data,temp,0,data.length-1); =WEfo;
} ;gm){ g
i}<R>]S
private void mergeSort(int[] data, int[] temp, int l, int r) { }C#YR(]
int i, j, k; mk4%]t"
int mid = (l + r) / 2; jd2Fh):q
if (l == r) 4kg9R^0
return; jgbw'BBu
if ((mid - l) >= THRESHOLD) JpDYB
mergeSort(data, temp, l, mid); 5Cy)#Z{
else ]NAPvw#p
insertSort(data, l, mid - l + 1); GN1cnM>`
if ((r - mid) > THRESHOLD) C
[2tH2*#
mergeSort(data, temp, mid + 1, r); wOi>i`D&
else 5[gkGKkf_
insertSort(data, mid + 1, r - mid); ?o.G@-
$;;?'!%.
for (i = l; i <= mid; i++) { *qb`wg
temp = data; Op%^dwVG(v
} jSYj+k
for (j = 1; j <= r - mid; j++) { @/0aj
temp[r - j + 1] = data[j + mid]; 6xFZv
t
} K.z}%a
int a = temp[l]; e('c9 Y
int b = temp[r]; "4tRy9q
for (i = l, j = r, k = l; k <= r; k++) { *h =7:*n
if (a < b) { x(b&r g.-0
data[k] = temp[i++]; RPiCXpJv&
a = temp; ~4`wfOvO
} else { 2%8N<GW.F
data[k] = temp[j--]; *Nt6 Ufq6
b = temp[j]; 4UL-j
} i2j)%Gc}
} n)K6Z{x
} AN~1E@"
`z=MI66Nl
/** a|7V{pp=M
* @param data +u=xBhZ
* @param l ;C"J5RA
* @param i iuHG9 #n
*/ ;%jt;Xv9
private void insertSort(int[] data, int start, int len) { /BIPLDN6
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); If&p$pAH?
} kcYR:;y
} M}5 C;E*
} gN]`$==c[
} MW$9,[
}dXL= ul
堆排序: v%FVz
lpp'.HTP
package org.rut.util.algorithm.support; ,DE%p
+q
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import org.rut.util.algorithm.SortUtil; UJm`GO
]DUH_<3"E
/** []2GN{m
* @author treeroot df:,5@CJ8
* @since 2006-2-2 uyA9`~p=#
* @version 1.0 Sc0ZT/Lm
*/ q/3}8BJ
public class HeapSort implements SortUtil.Sort{ F@I_sGCcb
Va 5U`0
/* (non-Javadoc) Yr31GJ}K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SUVr&S6Nk
*/ & aLR'*]6
public void sort(int[] data) { OKU P
MaxHeap h=new MaxHeap(); SA&wW\Ym]
h.init(data); ;% !?dH6
for(int i=0;i h.remove(); ;dWqMnV
System.arraycopy(h.queue,1,data,0,data.length); Qxvz}r.l]
} QAJ>93
@KpzxcEoO
private static class MaxHeap{ 7uDUZdJy
T#BOrT>V
void init(int[] data){ 14&EdTG.
this.queue=new int[data.length+1]; {0LdLRNZ
for(int i=0;i queue[++size]=data; UF{2Gx
fixUp(size); :qZ^<3+:
} drZw#b
} f*5"Jh@
v8 X&H
private int size=0; ?)X@4Jem
*=Fcu@
private int[] queue; "Dk:r/
Ww p^dx`!
public int get() { <Q0&[q;Z
return queue[1]; Yx%%+c?.
} `Q8 D[
Z
kS*CG
public void remove() { Kq?7#,_
SortUtil.swap(queue,1,size--); 4J_%quxO
fixDown(1); Rk=B;
} z%KChU
file://fixdown qb<gh D=j
private void fixDown(int k) { s_[?(Ip{
int j; S3<v?tqLr
while ((j = k << 1) <= size) { Xm4wuX"e=
if (j < size %26amp;%26amp; queue[j] j++; Mm;)O'XDE
if (queue[k]>queue[j]) file://不用交换 4(&'V+o
break; d;^?6V
SortUtil.swap(queue,j,k); 7h<K)aT
k = j; l}^#kHSyd
} JU@$(
} + ND9###
private void fixUp(int k) { .3&m:P8zV
while (k > 1) { ;H=6u
int j = k >> 1; 2ya`2 m
if (queue[j]>queue[k]) H5AY6),
break; OS
6 )`
SortUtil.swap(queue,j,k); s7e'9Bx
k = j; 6)$_2G%Zq
} <H)@vW]_
} w s=T R
}B-A*TI<h
} Dpd$&Wr0Y
qWFg~s#+
} cTnbI4S;
Y'5ck(
SortUtil: f+6l0@K2
GCKl[<9*
package org.rut.util.algorithm; {<2ZbN?
|$t0cd
import org.rut.util.algorithm.support.BubbleSort; T42g4j/l~
import org.rut.util.algorithm.support.HeapSort; LTe7f8A
import org.rut.util.algorithm.support.ImprovedMergeSort; w(j9[
import org.rut.util.algorithm.support.ImprovedQuickSort; J]0#M:w&
import org.rut.util.algorithm.support.InsertSort; 0- UeFy
import org.rut.util.algorithm.support.MergeSort; h[]N=X
import org.rut.util.algorithm.support.QuickSort; *LRGfk+h
import org.rut.util.algorithm.support.SelectionSort; :tqjm:
import org.rut.util.algorithm.support.ShellSort; l 3K8{HY
9zyN8v2
/** *K(xES!b
* @author treeroot +7^Ul6BB#K
* @since 2006-2-2 .{-yveE
* @version 1.0 3(:mRb}
*/ .;2!c'mT9
public class SortUtil { Cf7\>U->
public final static int INSERT = 1; x\rZoF.NQ
public final static int BUBBLE = 2; UjaC( c
public final static int SELECTION = 3; ~^S-
public final static int SHELL = 4; |DW'RopM
public final static int QUICK = 5; Bkc-iC}F
public final static int IMPROVED_QUICK = 6; XV>6;!=E
public final static int MERGE = 7; )ta5y7np
public final static int IMPROVED_MERGE = 8; (UZ*36@PJx
public final static int HEAP = 9; @:&+wq_>A^
O[y`'z;C
public static void sort(int[] data) { C=IH#E=
sort(data, IMPROVED_QUICK); ?C:fP`j:
} kA4ei
private static String[] name={ ".%LBs~$
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;ZJ,l)BNO
};
x]oQl^F
Q*.FUV&;
private static Sort[] impl=new Sort[]{ =!^iiHF
new InsertSort(), @<G/H|f
new BubbleSort(), 3ms/v:\
new SelectionSort(), CD_f[u
new ShellSort(), 7]%il[
new QuickSort(), (;&?B.<\:
new ImprovedQuickSort(), *fSM' q;
new MergeSort(), %j">&U.[
new ImprovedMergeSort(), p2vBj. *J
new HeapSort() jtv Q<4
}; pT@!O}'$
\&5@ yh
public static String toString(int algorithm){ LG#w/).^
return name[algorithm-1]; dV{Hn {(
} ]$*{<
1H=wl=K
public static void sort(int[] data, int algorithm) { e@=[+iJc
impl[algorithm-1].sort(data); 7omGg~!k(
} i4n
b#
Oq,.Kz
public static interface Sort { ]7kGHIJ|
public void sort(int[] data); s ;s-6%p
}
|WU`p
nnL$m_K~
public static void swap(int[] data, int i, int j) { oks=|'&
int temp = data; Qz+d[%Q}x
data = data[j]; jF{gDK
data[j] = temp; ;j U-<
} -]\E}Ti
} df6Ν4L