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。 O|8p #
插入排序: `InS8PLr
t]Oxo`h=
package org.rut.util.algorithm.support; HK }C<gg
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import org.rut.util.algorithm.SortUtil; 8&3G|m1-2
/** m:'fk;khN
* @author treeroot @P%&Dha
* @since 2006-2-2 wL}=$DN
* @version 1.0 f#[Fqkmj
*/ kQYX[e7n
public class InsertSort implements SortUtil.Sort{ d/"e3S1
7VR+EV
/* (non-Javadoc) .~Td/o7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A$
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*/ vmL0H)q
public void sort(int[] data) { ba
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int temp; @o_-UsUX
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R7vO,kZ6Q
} )4DF9 JpD
} q),yY]5
} JD,/oL.KA
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} 1}'|HAu
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冒泡排序: MbF.KmV
<zrGPwk
package org.rut.util.algorithm.support; UE*M\r<
hH%@8'1v
import org.rut.util.algorithm.SortUtil; 2jA-y!(e
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/**
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* @author treeroot <D=U= 5
* @since 2006-2-2 uP<tP:
* @version 1.0 ZMoN
*/ q*52|?
public class BubbleSort implements SortUtil.Sort{ @<;0h|
O9jqeF`L=
/* (non-Javadoc) 4R.rSsAH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RH~KaV3
*/ 10t9Qv/
public void sort(int[] data) { /JJU-A(
int temp; (oxe'\
for(int i=0;i for(int j=data.length-1;j>i;j--){ A=Dzd/CUO
if(data[j] SortUtil.swap(data,j,j-1); HPT$)NeNc
} GXf"a3
} Eufw1vDa
} u0\?aeg`
} 8eQ 4[wJY
jo/-'Lf{?
} u m,Zt
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选择排序: D&$%JT'3
dy`K5lC@
package org.rut.util.algorithm.support; {e,S}:$g4
6_rS!X
import org.rut.util.algorithm.SortUtil; Wu?4oF
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/** Yq}(O<ol
* @author treeroot $3w a%"
* @since 2006-2-2 +O2T%
* @version 1.0 @LqLtr@A
*/ CB:G4VqOT
public class SelectionSort implements SortUtil.Sort { ?u/RQ 1
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/* :OQx;>'
* (non-Javadoc) 1ti+
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* ]+Ik/+Nz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z2!O)8
*/ wgp{P>oBX
public void sort(int[] data) { 9Eu.Y
int temp; 5Ay\s:hb[u
for (int i = 0; i < data.length; i++) { =*_T;;E
int lowIndex = i; GB&<+5t2
for (int j = data.length - 1; j > i; j--) { aOIE9wO
if (data[j] < data[lowIndex]) { ^U)xQD"
lowIndex = j; 7&-B6Y4
} .0}]/%al
} tUaDwIu#
SortUtil.swap(data,i,lowIndex); PS7ta?V
QC
} X mJu{RbS
} <xv@us7
C5"=%v[gQv
} f_I6g uDPz
jv_z%`
Shell排序: -C1,$mkj
m:_'r"o
package org.rut.util.algorithm.support; K*NCIIDh
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import org.rut.util.algorithm.SortUtil; mW-4
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/** ^~XsHmcQ
* @author treeroot cdY|z]B
* @since 2006-2-2 >PHin%#
* @version 1.0 `\Z7It?aDs
*/ 7|bzopLJk
public class ShellSort implements SortUtil.Sort{ "&lQ5]N.%
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/* (non-Javadoc) ]jQj/`v1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r~N:|ip=
*/ mqUn3F3
public void sort(int[] data) { |soDt<y+L
for(int i=data.length/2;i>2;i/=2){ V'alzw7#
for(int j=0;j insertSort(data,j,i); S+9}W/
} 6N+ ]g/_a
} ,sF49CD
insertSort(data,0,1); l=4lhFG,Mk
} qJN!L))
&![3{G"+>l
/** ^V,?n@c!
* @param data JiH^N!
* @param j v{tw ;Z#
* @param i ~*NG~Kn"s
*/ #s%_ L
private void insertSort(int[] data, int start, int inc) { &pCa{p
int temp; ePLpGT
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); iX
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} ZMa@/\pf1
} d%?$UnQ
} v%^"N_]
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} ' ?tx?t
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快速排序: wjEyU:
[P_@-:(O
package org.rut.util.algorithm.support; rHngYcjR
Q> d<4]`
import org.rut.util.algorithm.SortUtil;
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/** ykMdH:
* @author treeroot {mO QRAKl
* @since 2006-2-2 sQ";
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* @version 1.0 3mP251"dIW
*/ :LrB9Cf$n
public class QuickSort implements SortUtil.Sort{ {wJ8%
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~$PY6s
/* (non-Javadoc) FW=`Fm@z%%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <ddXvUCX
*/ +YD_ L
public void sort(int[] data) { xky +"
quickSort(data,0,data.length-1); 4>R)2g
} RwyX,|
private void quickSort(int[] data,int i,int j){ ^L?2y/
int pivotIndex=(i+j)/2; Lqa|9|!
file://swap <Dk6o`7^N
SortUtil.swap(data,pivotIndex,j); to,\sc
0^('hS&
int k=partition(data,i-1,j,data[j]); omu)s
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SortUtil.swap(data,k,j); xu<oQBt
if((k-i)>1) quickSort(data,i,k-1); \0fS;Q^{j
if((j-k)>1) quickSort(data,k+1,j); 15J t
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vCX
54
} "rVf{
/** X:2)C-l?
* @param data &9OnN<mT1
* @param i jCp^CNbA
* @param j ;M<R
e
* @return 3sD/4 ?
*/ y?P4EVknM3
private int partition(int[] data, int l, int r,int pivot) { >S}^0vNZX
do{ +d!"Zy2|B
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3Z_\.Z1R@
SortUtil.swap(data,l,r); a1dkB"Zp.p
} 2I$-&c]
while(l SortUtil.swap(data,l,r); O=
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return l; qbx}9pp}g
} _=YHO.
2'U+QK@
} &zV;p
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改进后的快速排序: 5c
($~EFr
a8}!9kL
package org.rut.util.algorithm.support; K#;EjR4H
AGGNJ4m
import org.rut.util.algorithm.SortUtil; Xn6'*u>+;[
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/** zBjbH=
* @author treeroot |V-)3#c
* @since 2006-2-2 H: rrY
* @version 1.0 /LC!|-1E
*/ wA< Fw
)
public class ImprovedQuickSort implements SortUtil.Sort { BTnrgs#[
'*=kt
private static int MAX_STACK_SIZE=4096; 3)*Twqt
private static int THRESHOLD=10; 3[Z7bhpV
/* (non-Javadoc) }. t8Cy9G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v|IG
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*/ _1ax6MwX
public void sort(int[] data) { >NJ`*M
int[] stack=new int[MAX_STACK_SIZE]; WH l vd
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int top=-1; .azA1@V|
int pivot; M0K+Vz=
int pivotIndex,l,r; hQ _gOI
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stack[++top]=0; 5:vy_e&
stack[++top]=data.length-1; gJYX
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while(top>0){ i%#
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int j=stack[top--]; dOFK;
int i=stack[top--]; 5pz(6gA
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pivotIndex=(i+j)/2; 9jf2b
pivot=data[pivotIndex]; <sor;;T
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SortUtil.swap(data,pivotIndex,j); f9a_:]F
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file://partition cz;gz4d8
l=i-1; I?X!v6
r=j; F.$NYr/|y
do{ }%Vx2Q
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); RxUzJ
SortUtil.swap(data,l,r); <2ymfL-q
} {GhM,-%e
while(l SortUtil.swap(data,l,r); d: LP8
SortUtil.swap(data,l,j); :<PwG]LO
[DSD[[
z[
if((l-i)>THRESHOLD){ !g7bkA
stack[++top]=i; I%tJLdL
stack[++top]=l-1; :>o2UH
} !8}x6
if((j-l)>THRESHOLD){ m!sMr^W
stack[++top]=l+1; Uu(FFd~3
stack[++top]=j; "zx4k8
} JG* Lc@ Q
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} rssn'h
file://new InsertSort().sort(data); us >$f20T
insertSort(data); ~T:L0||.%9
} fBZR
/** L9^h.Y7
* @param data V[fcP;
*/ ]#P>wW
private void insertSort(int[] data) { Q|Go7MQZ@k
int temp; @Rs3i;"W
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =x-@-\m
} 50HRgoP5Y
} J`[He$7)
} I3" GGp3L
tish%Qnpd
} |P`: NAf2
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归并排序: ,+o*>fD
>*e,+ok
package org.rut.util.algorithm.support; %Kc 2n9W
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import org.rut.util.algorithm.SortUtil; uS&NRf9A
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/** S T25RJC
* @author treeroot e!p?~70
* @since 2006-2-2 3ox
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* @version 1.0 X.FFBKjf[e
*/ f+>g_Q
public class MergeSort implements SortUtil.Sort{ qIg^R@
|iGfWJ^+
/* (non-Javadoc) ![hVTZ,hyZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'bx$}w N
*/ HWxwG'EEY,
public void sort(int[] data) { \Ss6F]K]
int[] temp=new int[data.length]; IrTMZG
mergeSort(data,temp,0,data.length-1); f) @-X!
} ^gd[U C-"w
9MR,3/&N
private void mergeSort(int[] data,int[] temp,int l,int r){ Mhiz{Td
int mid=(l+r)/2; k \V6q9*
if(l==r) return ; V^E.9fs,
mergeSort(data,temp,l,mid); *WK0dn
mergeSort(data,temp,mid+1,r); pipqXe
for(int i=l;i<=r;i++){ jblj]/
temp=data; +9[s(E?SY
} k/mO(i%qi
int i1=l; \K%A}gnHe
int i2=mid+1; >q^l
for(int cur=l;cur<=r;cur++){
vY'E+M"+@
if(i1==mid+1) D/Hob
data[cur]=temp[i2++]; |nq}#
else if(i2>r) q}MPl 2
data[cur]=temp[i1++]; ]}HuK#
else if(temp[i1] data[cur]=temp[i1++]; HZEDr}RN
else 1@ .Eh8y
data[cur]=temp[i2++]; 5,u'p8}.
} ~|. vz!A
} $Oi@B)=4d+
0MX``/Z72
} XfYhLE
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改进后的归并排序: a534@U4,
f]37Xl%I
package org.rut.util.algorithm.support; C">w3#M%
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import org.rut.util.algorithm.SortUtil; EH~XN9b
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/** 8}<4f|?
* @author treeroot {v~.zRW%]r
* @since 2006-2-2 5&N55?G6
* @version 1.0 a^QyYX}\qR
*/ c0Oc-,6J
public class ImprovedMergeSort implements SortUtil.Sort { j_Qkw ?
Jrm 9,7/
private static final int THRESHOLD = 10; kZJ.G
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/* D0HLU
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* (non-Javadoc) uSU[Y,'x
* RT$.r5l_@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yk!TQY4
*/ /
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public void sort(int[] data) { OD`?BM
int[] temp=new int[data.length]; v\3}5v%YI
mergeSort(data,temp,0,data.length-1); 3r]N\c
} -
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b$k|D)_|
private void mergeSort(int[] data, int[] temp, int l, int r) { Cp[
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int i, j, k; j&
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int mid = (l + r) / 2; 6|AD]/t^K
if (l == r) YH^h?s
return; RJO40&Z<Z
if ((mid - l) >= THRESHOLD) v cZg3:j
mergeSort(data, temp, l, mid); dyNKok#
else q#!]5
insertSort(data, l, mid - l + 1); JOvRUDZ
if ((r - mid) > THRESHOLD) <C6*-j1oz
mergeSort(data, temp, mid + 1, r); w] =q>p
else s+l3]Hd
insertSort(data, mid + 1, r - mid); %9lx)w
Vp~c$y+
for (i = l; i <= mid; i++) { OPP^n-iPr
temp = data; ">D7wX,.>
} WjVj@oC
for (j = 1; j <= r - mid; j++) { mf\eg`'4?
temp[r - j + 1] = data[j + mid]; GfMCHs
} Kfl#78$d
int a = temp[l]; Z<^TO1xs9B
int b = temp[r]; 67{>x[
for (i = l, j = r, k = l; k <= r; k++) { eg$y,Tx
if (a < b) { `7mRUDz
data[k] = temp[i++]; k}h\RCy%f
a = temp; k;W`6:Kjp
} else { a }m>
data[k] = temp[j--]; QFYO_$1Y)
b = temp[j]; Y&JK*d
} n13#}i{tm
} "x
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} 1*o=I-nOa
YN >k5\M_v
/** MrGq{,6C
* @param data >*FH JCe
* @param l XwNJHOaF
* @param i s%c>Ge
*/ 4T<4Rb[
private void insertSort(int[] data, int start, int len) { JX! @j3
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &3t[p=
} O<EFm}Ae
} $VRVMY [q
} WXzSf.8p|
} dW`!/OaQD
|>U:Pb(
堆排序: 0`D`
Je<t
01^+HEbm
package org.rut.util.algorithm.support; ]/klKqz
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import org.rut.util.algorithm.SortUtil;
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VvSe`E*
/** *eLKD_D`!C
* @author treeroot X@j.$0eK
* @since 2006-2-2 k6b0&il
* @version 1.0 _>k&M7OU4
*/ ?0%3~E`l:
public class HeapSort implements SortUtil.Sort{ 1O{(9nNj
8uZM%7kI6+
/* (non-Javadoc) fKYR DGn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4,)EG1
*/ O7of9F~"
public void sort(int[] data) { {#o0vWS>
MaxHeap h=new MaxHeap(); RL|d-A+;
h.init(data); do$+ Eh
for(int i=0;i h.remove(); v+b#8
System.arraycopy(h.queue,1,data,0,data.length); XHER [8l
}
c1x{$
"xK#%eJjWd
private static class MaxHeap{ N9}27T+4
rUL_=>3
void init(int[] data){ *\!>22*
this.queue=new int[data.length+1]; =}1)/gcM
for(int i=0;i queue[++size]=data; }#Gq*^w
fixUp(size); EpsjaOmAF
} h%*@82DKK
} Wp2$L-T&$
#PJHwvr
private int size=0; "z6xS;
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@YAp
private int[] queue; ;ifPqLkO
N R0"yJV>
public int get() { nd4Z5=X
return queue[1]; fb*h.6^y9
} ZCC T
t|jp]Vp
public void remove() { :Q-QY)hH
SortUtil.swap(queue,1,size--); |mp~d<&
fixDown(1); Ww&r
} !+(c/ gwBh
file://fixdown gx ]5)O
private void fixDown(int k) { y`Nprwb
int j; 2P(6R.8;6
while ((j = k << 1) <= size) { LyuA("xB#
if (j < size %26amp;%26amp; queue[j] j++; &`^PO$
if (queue[k]>queue[j]) file://不用交换 FD[o94`%
break; V7}]39m(s
SortUtil.swap(queue,j,k); =73aME}
k = j; h; "pAE
} F+ Dke>j
} "PePiW(i+
private void fixUp(int k) { &rbkw<=j
while (k > 1) { %5yP^BL0
int j = k >> 1; ;ZtN9l
if (queue[j]>queue[k]) fG_<HJS(~
break; !+V."*]l
SortUtil.swap(queue,j,k); a9N$I@bi]
k = j; zc.r&(d
} 8quH#IhB
} ZTg[}+0e
bHK[Z5
} 9~5LKg7Ac
Tf{lH9ca$
} F"| ;
{TVQ]G%'b
SortUtil: Memb`3
1/tyne=m
package org.rut.util.algorithm; ym;I(TC+
l0K_29^
import org.rut.util.algorithm.support.BubbleSort; V
M{Sng
import org.rut.util.algorithm.support.HeapSort; JKY
import org.rut.util.algorithm.support.ImprovedMergeSort; lKBI3oYn
import org.rut.util.algorithm.support.ImprovedQuickSort; q5G`N>"V
import org.rut.util.algorithm.support.InsertSort; Y1-=H)G
import org.rut.util.algorithm.support.MergeSort; W!R7D%nX
import org.rut.util.algorithm.support.QuickSort; 's\rQ-TV
import org.rut.util.algorithm.support.SelectionSort; %%+@s
import org.rut.util.algorithm.support.ShellSort; h )% e
P/,ezVb=
/** Y;1s=B9
* @author treeroot u-u:7VtH0=
* @since 2006-2-2 U7xKu75G1
* @version 1.0 o\N^Uu
*/ Egi(z9|Pp
public class SortUtil { 9ePR6WS4
public final static int INSERT = 1; r*kz`cJ
public final static int BUBBLE = 2; :qvA'.L/;z
public final static int SELECTION = 3; R+5yyk\
public final static int SHELL = 4; ~sVbg$]\ G
public final static int QUICK = 5; ^5q}M'
public final static int IMPROVED_QUICK = 6; )CoJ9PO7
public final static int MERGE = 7; TdL/tg!
public final static int IMPROVED_MERGE = 8; y3Ul}mVhA
public final static int HEAP = 9; wJg&OQc9
C
{G647
public static void sort(int[] data) { ? ]H'egG6
sort(data, IMPROVED_QUICK); X3j|J/
} [!j;jlh7},
private static String[] name={ =l4F/?u]f@
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z5`U+ (
}; %*^s%NI
@@5JuI-!
private static Sort[] impl=new Sort[]{ {`+:!X
new InsertSort(), jL*s(Yq
new BubbleSort(), gg&Dej2{
new SelectionSort(), 7e:7RAX
new ShellSort(), "Z#MR`;&29
new QuickSort(), }+fBJ$
new ImprovedQuickSort(), ,T8fo\a4
new MergeSort(), )(h<vo)-zX
new ImprovedMergeSort(), c8oE,-~
new HeapSort() +:3p*x%1H
}; )VeeAu)p
5 J
7XVe>
public static String toString(int algorithm){ BYZllwxwTE
return name[algorithm-1]; @N6KZn|R
} nnuJY$O;M
b8h6fB:2
public static void sort(int[] data, int algorithm) { ~EO=;a_
impl[algorithm-1].sort(data); ge[&og/$
} 97n,^t2F\
=/kT|
public static interface Sort { \]qwD m/
public void sort(int[] data); qz
}PTx
}
A&C?|M?M
q)!G5j3
public static void swap(int[] data, int i, int j) { q]DE\*@
int temp = data; F>ps&h
data = data[j]; Qy\Koo
data[j] = temp; e^h4cC\^
} '<aFd)-
} lTZcbaO?]