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。 s+CXKb +
插入排序: AMm O+E?
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package org.rut.util.algorithm.support; *{Z!m@?
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import org.rut.util.algorithm.SortUtil; <1LuYEDq
/** Z\7bp&&
* @author treeroot rFK
*
* @since 2006-2-2 C4cg,>P7
* @version 1.0 PQ(%5c1e
*/ *|3z($*U]
public class InsertSort implements SortUtil.Sort{ v4.V%tg!
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/* (non-Javadoc) }N|/b"j9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e.kt]l
*/ {r}}X@|5
public void sort(int[] data) { v}mmY>M%
int temp; c]&VUWQ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PJ.jgN(r
} pxC5a i
} f
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} ^R$dG[Qf
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} h
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冒泡排序: Cwh;+3?C|
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package org.rut.util.algorithm.support; VA%i_P,
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import org.rut.util.algorithm.SortUtil; 7U7 i2 4
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/** ;C<A}
* @author treeroot SYwNx">Bq
* @since 2006-2-2 )K6{_~Kc\
* @version 1.0 '[E_7$d
*/ xr2:bu
public class BubbleSort implements SortUtil.Sort{ }<S2W\,G
#lC{R^SL
/* (non-Javadoc) x M[#Ah)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \*
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*/ /Rz,2jfRx'
public void sort(int[] data) { 6};oLnO
int temp; ou-;k
}
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]rm=F]W/n
if(data[j] SortUtil.swap(data,j,j-1); Y|~>(
} LN^8U
} 0A9cu,ZdUR
} ~e8n yB
} m>!#}EJ|
el%Qxak`"
} sJlKN
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选择排序: E=QQZ\w
(Vv]:Y]
package org.rut.util.algorithm.support; Ei<:=6EX?8
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import org.rut.util.algorithm.SortUtil; jYF3u0
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/** AVWrD[ wD2
* @author treeroot IA4(^-9
* @since 2006-2-2 *2MTx
* @version 1.0 w1b
<>A?87
*/ 2Qj)@&zKe#
public class SelectionSort implements SortUtil.Sort { SAJ=)h~
FM)*>ax{
/* R 2s>;V.:
* (non-Javadoc) t_dg$KB
* 9="sx 8?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6KG 63`aQ
*/ WGx>{'LJ
public void sort(int[] data) { #w@Pa L iS
int temp; aB)DX
for (int i = 0; i < data.length; i++) { Z(eSnV_RL
int lowIndex = i; U*TN/6Qy.
for (int j = data.length - 1; j > i; j--) { ~4<3`l=A
if (data[j] < data[lowIndex]) { sCl,]g0{
lowIndex = j; IycxRig
} ,gc#N
} cg%CYV)
SortUtil.swap(data,i,lowIndex); WU\bJ}
} W|e>
} ($W 5fbu
c,wU?8Nc|$
} /f<(K-o]
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Shell排序: @k,(i=**
7p$*/5fk
package org.rut.util.algorithm.support; #O+]ydvT
#^ #i]{g
import org.rut.util.algorithm.SortUtil; ZtoE=7K
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/** y9hZ2iT
* @author treeroot w#,v n8
* @since 2006-2-2 R-fjxM*
* @version 1.0 f4_G[?9,
*/ '=.Uz3D'0
public class ShellSort implements SortUtil.Sort{ )S;ps
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/* (non-Javadoc) ~7a BeD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &7&*As
*/ cx(F,?SbS
public void sort(int[] data) { CF"3<*%x
for(int i=data.length/2;i>2;i/=2){ ""^BW Re D
for(int j=0;j insertSort(data,j,i); {;DZ@2|
} Dys"|,F
} 2*YXm>|1
insertSort(data,0,1); pNFIO
t:(
} jt--w"|-r
-RQQ|:O$
/** P;LZ!I
* @param data ;i:wY&
* @param j Zr;=p"cXr
* @param i Y{|yB
*/ oJT@'{;*z
private void insertSort(int[] data, int start, int inc) { B[
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int temp; s.)w
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T+h{Aeg
} FF~4y>R7u
} neFno5d j
} {{%8|+B
MToQ8qKs
} s'Gy+h.
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快速排序: _PXo'*j
5q`)jd !*)
package org.rut.util.algorithm.support; *+4iBpyiB
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import org.rut.util.algorithm.SortUtil; 5udoZ>T
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/** z.HNb$;
* @author treeroot _
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* @since 2006-2-2 ldvxYq<:
* @version 1.0 wLe&y4
*/ \<x_96jt!\
public class QuickSort implements SortUtil.Sort{ #@s~V<rW
<" l;l~Y1
/* (non-Javadoc) , %O3^7i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `f+g A
*/ E*CQG;^=N
public void sort(int[] data) { !BuJC$
quickSort(data,0,data.length-1); TcmZ0L^O
} Bl\kU8O-
private void quickSort(int[] data,int i,int j){ Atq2pL"
int pivotIndex=(i+j)/2; L)Ar{*xC
file://swap }QW~.>`
SortUtil.swap(data,pivotIndex,j); 0a6z"K}
G$9|aaf`1#
int k=partition(data,i-1,j,data[j]); Z*)Y:tk)b
SortUtil.swap(data,k,j); W<]Oo ]
if((k-i)>1) quickSort(data,i,k-1); T8TsKjqOZ
if((j-k)>1) quickSort(data,k+1,j); :gaeb8`t
'/gwC7*-&
} hcc-J)=m
/** N/{Yi
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* @param data dS_)ll.6z
* @param i k:)u7A+
* @param j LEnP"o9ZW
* @return 7h&`BS
*/ =1OAy`8
private int partition(int[] data, int l, int r,int pivot) { `4$Qv'X*
do{ ":^
NLBm>5
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); i3&B%JiLX
SortUtil.swap(data,l,r); )K%O/H
} 1\{U<Oli
while(l SortUtil.swap(data,l,r); -JhjTA
return l; =&:f+!1$
} B%:9P
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} m&~Dj#%(w
#33RhJu5,
改进后的快速排序: ~'QeN%qadP
*([)X2A@+
package org.rut.util.algorithm.support; JP,(4h*
iA{jKk=
import org.rut.util.algorithm.SortUtil; 't?7.#,6O
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/** *[~o~e/YCb
* @author treeroot qq7X",s
* @since 2006-2-2 \ j X N*A
* @version 1.0 |-Esc|J(
*/ LI;Efy L
public class ImprovedQuickSort implements SortUtil.Sort {
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private static int MAX_STACK_SIZE=4096; ?r E]s!K
private static int THRESHOLD=10; {$1$]p~3o
/* (non-Javadoc) B"Kce"!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P^<0d'(
*/ zMr!WoW
public void sort(int[] data) { /j69NEl
int[] stack=new int[MAX_STACK_SIZE]; l(w vQO
4zfRD`;
int top=-1; aGk%I
int pivot; U;Ll.BFP
int pivotIndex,l,r; grxl{uIC8
P:,
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stack[++top]=0; T\
}v$A03
stack[++top]=data.length-1; ?-:: {2O)
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while(top>0){ >"<k8wn
int j=stack[top--]; 46P6Bwobh
int i=stack[top--]; 69j~?w)^
&<|-> *v
pivotIndex=(i+j)/2; FJ(B]n[>
pivot=data[pivotIndex]; u6Qf*_- K
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SortUtil.swap(data,pivotIndex,j); .i&ZT}v3
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file://partition |~bR.IA
l=i-1; DMcxa.Sd!
r=j; [kuVQ$)
do{ YyJ{
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .F$|j1y
SortUtil.swap(data,l,r); 87pXv6'FQ
} !MJe+.
while(l SortUtil.swap(data,l,r); ,Lun-aMd
SortUtil.swap(data,l,j); L}jF#*Q%
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if((l-i)>THRESHOLD){ ?9gTk
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stack[++top]=i; d1TdH s\
stack[++top]=l-1; Jg|cvu-+
} mhi90J c
if((j-l)>THRESHOLD){ pjHRV[`AP
stack[++top]=l+1; ZAX0n!db3
stack[++top]=j; w0j/\XN2s
} yB4H3Q )
*fH_lG%
} pba8=Z
file://new InsertSort().sort(data); 7.e7Fi{
insertSort(data); Vl 19Md
} 95^i/6Gl!P
/** Gkv~e?Kc~^
* @param data \SiHrr5
*/ S2
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private void insertSort(int[] data) { Y%0d\{@a
int temp; o`\.I&Ij
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wLOQhviI^-
} (\T0n[
} I& M36f
} jH&_E'XMX
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} z{@R.'BD
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归并排序: >^yc=mM(g3
/j' B\,
package org.rut.util.algorithm.support; F?8BS*r_
@ 2!C^}d3F
import org.rut.util.algorithm.SortUtil; .;HIEj zq
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/** ;;?vgrz
* @author treeroot Z%+BWS3YqY
* @since 2006-2-2 C1T=O
* @version 1.0 a4T~\\,dZ>
*/ ?AnjD8i
public class MergeSort implements SortUtil.Sort{ 2<'`^AO@
e`Co,>W/
/* (non-Javadoc) ?jri!]ux#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *!g 24
*/ /BMtcCPG!
public void sort(int[] data) { ms}f>f=
int[] temp=new int[data.length]; j1puB
mergeSort(data,temp,0,data.length-1); -Aa]aDAz68
} zUs~V`0
`k(u:yGK
private void mergeSort(int[] data,int[] temp,int l,int r){ }qiF^D}
int mid=(l+r)/2; \9] I#Ih}M
if(l==r) return ; MCk^Tp!
mergeSort(data,temp,l,mid);
n1*&%d'7
mergeSort(data,temp,mid+1,r); ?h!t$QQ!M
for(int i=l;i<=r;i++){ -]Q(~'a
temp=data; 6P~aW
} gwSN>oj
&
int i1=l; BrJ
o!@<
int i2=mid+1; mG831v?
for(int cur=l;cur<=r;cur++){ $s-9|Lbs`
if(i1==mid+1) S~0JoCeo
data[cur]=temp[i2++]; k]?z~ p
else if(i2>r) rQ
data[cur]=temp[i1++]; %M{k.FE(
else if(temp[i1] data[cur]=temp[i1++]; Mlv<r=E
else )?w&oIj5
data[cur]=temp[i2++]; g.x=pt
} 2yN%~C?$
} 2wx!Lpr<i_
P</s)"@
} _+twqi
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改进后的归并排序: {~"7vkc+
{r={#mO;p
package org.rut.util.algorithm.support; E@w[
'h-3V8m^e
import org.rut.util.algorithm.SortUtil; lDW!Fg
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/** vd}*_d
* @author treeroot GS\%mPZ
* @since 2006-2-2 |9>*$Fe"
* @version 1.0 ajn-KG!A
*/ }A{_L6qx
public class ImprovedMergeSort implements SortUtil.Sort { of9q"h
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private static final int THRESHOLD = 10; M@|w[ydQG
U~aWG\h#X
/* )YuRjBcp,"
* (non-Javadoc) +}Xr1fr{jw
* (/"thv5vT{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bvz62?
*/ T yU&QXb
public void sort(int[] data) { BlXX:aZv
int[] temp=new int[data.length]; /7bw: h;
mergeSort(data,temp,0,data.length-1); NQ?x8h3
} n0_B(997*
h4f~5- Y
private void mergeSort(int[] data, int[] temp, int l, int r) { [ S5bj]D
int i, j, k; `f@{Vcr%i
int mid = (l + r) / 2; %drJ p6n%
if (l == r) ibvJWg
return; {G]?{c)"
if ((mid - l) >= THRESHOLD) Qi_&aU$>lM
mergeSort(data, temp, l, mid); EMLx?JnP
else osl=[pm
insertSort(data, l, mid - l + 1); \}Dpb%^\
if ((r - mid) > THRESHOLD) D%-{q>F!gf
mergeSort(data, temp, mid + 1, r); tqK=\{U
else D9~}5
insertSort(data, mid + 1, r - mid); kLJlS,nh\r
wG+=}1X
for (i = l; i <= mid; i++) { o]A XT8
temp = data; ;Xqn-R
} d7* CwY9"
for (j = 1; j <= r - mid; j++) { Yi 6Nw+$
temp[r - j + 1] = data[j + mid]; Rho5s@N 7
} @0$}?2
int a = temp[l]; C` pp
int b = temp[r]; O@s{uZ|A6
for (i = l, j = r, k = l; k <= r; k++) { h1#S+k
if (a < b) { 80Ag
data[k] = temp[i++]; Y)|~:& tZ
a = temp; <yZP|_
} else { UR}kB&t
data[k] = temp[j--]; i^WIr h3a
b = temp[j]; lzEb5mg
} >9=:sSQu
} Qm<
gb+
} +@0TMK,P
yO=p3PV d
/** <;%0T
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* @param data E/ijvuO
* @param l x=.tiM {#
* @param i y0<Uu
*/ I:i<>kG
private void insertSort(int[] data, int start, int len) { tRteyNA
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); NvQ%J+
} ym\(PCa5`
} ryg4hHspl
} [ByQ;s5tY
} z>G;(F2
&'s^nn]
堆排序: 8V-,Xig;`
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package org.rut.util.algorithm.support; ltoqtB\s
r0\?WoF2C
import org.rut.util.algorithm.SortUtil; '<7S^^ax
O}C)~GU
/** ,^ 7 CP
* @author treeroot zie=2
* @since 2006-2-2 <W*xshn
* @version 1.0 g` [` P@
*/ 7S<UFj
public class HeapSort implements SortUtil.Sort{ OEnDsIhq
W5.Va.
/* (non-Javadoc) dAL3. %
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ! RPb|1Y}+
*/ 9${Xer'
public void sort(int[] data) { \3aTaT?..
MaxHeap h=new MaxHeap(); 7d;pvhnH
h.init(data); 'z5h3J
for(int i=0;i h.remove(); \vCGU>UY
System.arraycopy(h.queue,1,data,0,data.length); \tx%WC
} 0I5&a
v0#*X5C1'
private static class MaxHeap{ ^,TTwLy-t
R-
void init(int[] data){ =1Z;Ma<;
this.queue=new int[data.length+1]; WhFS2Jl0
for(int i=0;i queue[++size]=data; rA1qSG~c
fixUp(size); *P!s{i
} ]CX[7Q+'
} 3?.1nGu
s]H^wrg&
private int size=0; xx }GOY.J
Dx-KMiQ,"(
private int[] queue; .<#ATFmY
!^y y0`k6
public int get() { jQ=~g-y
return queue[1]; +7U
} nX^1$')gp
l?8)6z#Zl
public void remove() { c*;7yh&%
SortUtil.swap(queue,1,size--); %}&(h/= e
fixDown(1); S&(^<gwl
} ^$-Ye]<
file://fixdown r?A|d.Tl
private void fixDown(int k) { C5@V/vA
int j; (K :]7
while ((j = k << 1) <= size) { = 96P7#%
if (j < size %26amp;%26amp; queue[j] j++; !MVj=(
if (queue[k]>queue[j]) file://不用交换 p!zJ;rh)
break; hoQ7).>
SortUtil.swap(queue,j,k); BFVAw
k = j; ? 2#(jZ# 2
} 909md|9K3
} zl%>`k!>
private void fixUp(int k) { 6X)@ajGWg~
while (k > 1) { yz\c5
int j = k >> 1; !kL> ,O>/
if (queue[j]>queue[k]) <
g|Z}Y
break; 6CCbBA
SortUtil.swap(queue,j,k); ^"i~DC
k = j; wX,F`e3"/
} ;%Hf)F
} ?LaUed'
@Uo6>-WF
} kKiA
L]d-33.c!H
} EQ<RDhC@b
nSx]QREL!
SortUtil:
Paj vb-f
r~7:daG*
package org.rut.util.algorithm; M4m$\~zf
zj|WZ=1*Wp
import org.rut.util.algorithm.support.BubbleSort; MYLsHIPC
import org.rut.util.algorithm.support.HeapSort; PRB{VC<k
import org.rut.util.algorithm.support.ImprovedMergeSort; wy,p&g)>
import org.rut.util.algorithm.support.ImprovedQuickSort; )ev<7g9*q
import org.rut.util.algorithm.support.InsertSort; )]43R
import org.rut.util.algorithm.support.MergeSort; #VVr"*7$
import org.rut.util.algorithm.support.QuickSort;
-\,zRIOK
import org.rut.util.algorithm.support.SelectionSort; o "z@&G" ^
import org.rut.util.algorithm.support.ShellSort; $`VFdAe
57,dw-|xi
/** a%vrt)Gx
* @author treeroot nFRsc'VT
* @since 2006-2-2 :5fAPK2r<
* @version 1.0 l2jF#<S@
*/ ihCIh6
public class SortUtil { !CUoHTmB
public final static int INSERT = 1; TsQU6NNE
public final static int BUBBLE = 2; XORk!m|
public final static int SELECTION = 3; 51BlM%
public final static int SHELL = 4; H1EDMhn/
public final static int QUICK = 5; "v-(g9(
public final static int IMPROVED_QUICK = 6; !j:`7PT\
public final static int MERGE = 7; ^W?Z
public final static int IMPROVED_MERGE = 8; h8e757z
public final static int HEAP = 9; w5=tlb
\ I`p|&vG
public static void sort(int[] data) { wzCUZ1N9q
sort(data, IMPROVED_QUICK); fbvbz3N
} @Xp~2@I=ls
private static String[] name={ 3AcD,,M>>
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" eqAW+Ptx
}; q'Wr[A40j
>rsqH+oL
private static Sort[] impl=new Sort[]{ !g!5_|
new InsertSort(), qJ4T]FVN
new BubbleSort(), ,XkGe
new SelectionSort(), 5ETip'<KT6
new ShellSort(), @`36ku
new QuickSort(), 4qi[r)G
new ImprovedQuickSort(), [K/m
new MergeSort(), tWeFEVg
new ImprovedMergeSort(), >slm$~rv
new HeapSort() eYX5(`c[
}; ufV!+$C)is
bi4f]^hQz
public static String toString(int algorithm){ A]0:8@k5
return name[algorithm-1]; *J|(jdu7
} <[:o !$
?:{sH#ua
public static void sort(int[] data, int algorithm) { RDqFL.-S
impl[algorithm-1].sort(data); v"& pQ
} \daZk /@
ikD1N
public static interface Sort { [BBEEI=|r
public void sort(int[] data); ~@ jY[_
} \b=Pj!^gwb
$Xm6N@
public static void swap(int[] data, int i, int j) { q$(5Vd:
int temp = data; bg,9@ }"F
data = data[j]; 5{e,L>H<
data[j] = temp; |*/[`|*G
} 3DgsI7-F
} sZ,Y60s8a