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。 }hy,
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插入排序: GnzKDDH
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package org.rut.util.algorithm.support; o6[aP[~F
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import org.rut.util.algorithm.SortUtil; 2)zAX"#/
/** !ENDQ?1
* @author treeroot }[gk9uM_7
* @since 2006-2-2 @ysc?4% q
* @version 1.0 O<o>/HH$
*/ TppuEC>
public class InsertSort implements SortUtil.Sort{ FbWcq_
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/* (non-Javadoc) <_N<L\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lEWF~L5=:
*/ 9_
public void sort(int[] data) { t.`&Q|a
int temp; V|n}v?f_q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #oX8EMqs<
} 1\aJ[t
} bk}'wcX<+]
} Y%1 94fY$
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} f"}g5eg+
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冒泡排序: ~]_U!r[FA
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package org.rut.util.algorithm.support; 7a_tT;f;
Ok V*,n
import org.rut.util.algorithm.SortUtil; !5}u \
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/** G8t9Lx
* @author treeroot lPaTkZw
* @since 2006-2-2 TF1,7Qd
* @version 1.0 ' %&gER
*/ aJ/}ID
public class BubbleSort implements SortUtil.Sort{ d^(7\lw|
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/* (non-Javadoc) LpYG!K l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5w+KIHhN|
*/
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public void sort(int[] data) { uSgR|b;R]
int temp; 2t[P-on
for(int i=0;i for(int j=data.length-1;j>i;j--){ S
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if(data[j] SortUtil.swap(data,j,j-1); YEPQ/Pc
} b$;qtfJG
}
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} 1)o6jGQ
} K'_qi8Z
U
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} xWnOOE$i
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选择排序: &"r /&7:
F1)5"7f
package org.rut.util.algorithm.support; U EjP`
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import org.rut.util.algorithm.SortUtil; 3Cw}y55_y
g&*,j+$ }
/** K0YQ b&*k
* @author treeroot {sfA$ d0
* @since 2006-2-2 k5%W8dI
* @version 1.0 Vak\N)=u
*/ _70Z1_;
public class SelectionSort implements SortUtil.Sort { .He}f,!f<
bFIM07
/* @C|nc&E2s
* (non-Javadoc) R4y]<8}
* "ze-Mb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BW:HKH.k
*/ u4h0s1iI
public void sort(int[] data) { !-t,r%CG
int temp; JC MUK<CG
for (int i = 0; i < data.length; i++) { `Gj(>z*
int lowIndex = i; r7,}"Pl
for (int j = data.length - 1; j > i; j--) { /9e?uC6
if (data[j] < data[lowIndex]) { *`q?`#1&&.
lowIndex = j; \xlG 3nz
} +Bf?3 5LP
} _U_O0@xi
SortUtil.swap(data,i,lowIndex); _%[po%]
} VsJiE0'%
} ~Pj q3etk
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} Ptc+ypTu
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Shell排序: aeISb83Y |
GsmXcBzDw2
package org.rut.util.algorithm.support; Khb Ku0Z
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import org.rut.util.algorithm.SortUtil; sH.=Faos
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/** +fvD1xHI
* @author treeroot QtwQVOK
* @since 2006-2-2 /Kd7#@
* @version 1.0 kU+|QBA@
*/ m<49<O6o
public class ShellSort implements SortUtil.Sort{ H %c6I
9b&|'BBW
/* (non-Javadoc) TF%Xb>jy[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4-t^?T:qF
*/ a}uYv:
public void sort(int[] data) { |{&M#qXe
for(int i=data.length/2;i>2;i/=2){ qm3H/cC9+
for(int j=0;j insertSort(data,j,i); 43pe6 ^.
} hJ$9Hb
} A#6zINK#B
insertSort(data,0,1); )q[P&f(h
} 8Z0x*Ssk
e{7\pQK
/** W&=OtN
U!
* @param data r=&,2meo
* @param j [lg!*
* @param i G[\TbPh
*/ ]q.%_
private void insertSort(int[] data, int start, int inc) { X%+lgm+
int temp; J Cq>;br.
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); mwo:+^v(
} m/1FVC@*
}
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} [Q0V 5P~Q'
Bl*}*S PU
} +?Ii=* 7n
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快速排序: cf88Fd6l/
gLB(A\yG
package org.rut.util.algorithm.support; iCPm7AU
vY-CXWC7
import org.rut.util.algorithm.SortUtil; a(|6)w-
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/** )"S%'myj
* @author treeroot !1G
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* @since 2006-2-2 Y>8Qj+d
* @version 1.0 ${MzOi
*/ T@tsM|pI
public class QuickSort implements SortUtil.Sort{ F#gA2VCm
+Yc^w5 !(
/* (non-Javadoc) <NMJkl-r8r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /)6T>/
*/ n@8Y6+7i
public void sort(int[] data) { nbF<K?
quickSort(data,0,data.length-1); V
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} 6u0>3-[6OD
private void quickSort(int[] data,int i,int j){ ]~aj
int pivotIndex=(i+j)/2; #4JMb#q0E
file://swap nzC *mPX8
SortUtil.swap(data,pivotIndex,j); rO7_K>g?
Nvgi&iBh8
int k=partition(data,i-1,j,data[j]); y:RW:D&
SortUtil.swap(data,k,j); z2iMpZ
if((k-i)>1) quickSort(data,i,k-1); C2}y#A I
if((j-k)>1) quickSort(data,k+1,j); ENZym
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} rLsY_7!
/** DK74s
* @param data iT}>a30]B
* @param i x/DV> Nfn
* @param j ,~Mf2Y#m0p
* @return = LNU%0m
*/ -D~K9u]U_
private int partition(int[] data, int l, int r,int pivot) { H?=W]<!W{y
do{ `;j1H<L
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,Z~`aHhr
SortUtil.swap(data,l,r); 6Qkjr</
} tnJ7m8JmC
while(l SortUtil.swap(data,l,r); NV*
2
return l; ,D;8~llM
} R4'.QZ-x
Qn$'bK2V
} rr
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改进后的快速排序: A;;#]]48
jlBsm'M<m
package org.rut.util.algorithm.support; B~I ]3f
D,cD]tB2
import org.rut.util.algorithm.SortUtil; LA6XTgcu
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/** jA1S|gV
* @author treeroot +S~ u ,=
* @since 2006-2-2 TB>_#+:
* @version 1.0 E{Wn&?i>A
*/ i3)3.WK^
public class ImprovedQuickSort implements SortUtil.Sort { I0F[Z\U
=8l' [
private static int MAX_STACK_SIZE=4096; e8`d<U
private static int THRESHOLD=10; w~+*Vd~U
/* (non-Javadoc) j
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /(~
HHN nh
*/ &b@_ah+f
public void sort(int[] data) { OAkqPG&w
int[] stack=new int[MAX_STACK_SIZE]; %1{S{FB
vu.ug$T
int top=-1; RhJ 3>DL
int pivot; $(62j0mS>
int pivotIndex,l,r; vVB WhY]
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stack[++top]=0; 5i6Ji(
stack[++top]=data.length-1; `m'RvU c
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while(top>0){ ]4O!q}@Cd
int j=stack[top--]; Idu'+O4
int i=stack[top--]; #`@)lU+/
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pivotIndex=(i+j)/2; &DQ_qOKD
pivot=data[pivotIndex]; }D1?Z7p
s {*rBX8N
SortUtil.swap(data,pivotIndex,j); F4=X(P_6
tuH#Cy
file://partition l%V+]skS
l=i-1; +sx(q@
r=j; -wUT@a
do{ #: EhGlq8
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *=md!^x`
SortUtil.swap(data,l,r); k7JC~D
E#
} G9S3r3
while(l SortUtil.swap(data,l,r); v#d3W|
~
SortUtil.swap(data,l,j); m!INbIh
c@lF*"4
if((l-i)>THRESHOLD){ #+i5'p(4
stack[++top]=i; cm!vuoB~~
stack[++top]=l-1; 5bZ0}^FYF
} mb'{@
if((j-l)>THRESHOLD){ J^WX^".E
stack[++top]=l+1; shLMj)7!
stack[++top]=j; n1x3q/~
} $5#DU__F/
{Zs
EYUP
} vqF=kB"P
file://new InsertSort().sort(data); ]:#W$9,WL
insertSort(data); [IyC}lSW^-
} _Kli~$c& M
/** ,=pn}\R
* @param data TCgW^iu
*/ \^cXmyQ <%
private void insertSort(int[] data) { 7OPRf9+o
int temp; Tv,ZS
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nh+h3"-d
} y2B'0l
} /+<G@+(
} Cpn!}!Gnf
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} Y 6jgAq
;Rxc(tR!n
归并排序: 6/0bis
H
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package org.rut.util.algorithm.support; 2`V0k.$?p
3z k},8fu
import org.rut.util.algorithm.SortUtil; ~A(^<
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/** X4k|k>
* @author treeroot LCSJIt
* @since 2006-2-2 M>*xbBl
* @version 1.0 =QwT)KRB%
*/ Rd@?2)Xm
public class MergeSort implements SortUtil.Sort{ }+:X= @Z@
(F#2z\$;
/* (non-Javadoc) x45F-w{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2H1?f|0>
*/ "`KT7
public void sort(int[] data) { Q ~eh_>"
int[] temp=new int[data.length]; \h}sA
mergeSort(data,temp,0,data.length-1); 4^^=^c
} ,W$&OD
~'Korxa
private void mergeSort(int[] data,int[] temp,int l,int r){ F\<{:wu
int mid=(l+r)/2; @><8YN^)%
if(l==r) return ; XS>( Bu
mergeSort(data,temp,l,mid); +WCV"m
mergeSort(data,temp,mid+1,r); .07kG]
for(int i=l;i<=r;i++){ AI$\wp#aw
temp=data; G1SOvdq
} ~qE:Nz0@
int i1=l; "Qk)EY
int i2=mid+1; "!#KQ''R
for(int cur=l;cur<=r;cur++){ e=ry_@7
if(i1==mid+1) g]?QV2bX6
data[cur]=temp[i2++]; !3ji]q;uF
else if(i2>r) LO,:k+&A+
data[cur]=temp[i1++]; 4@jX{{^6%
else if(temp[i1] data[cur]=temp[i1++]; }(#;{_
else k P=~L=cK
data[cur]=temp[i2++]; cZ,}1?!
} iG{xDj{CKv
} M?qvI
"i\^GK=
} !!)NER-dv
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改进后的归并排序: riSgb=7q9
T=[/x=
package org.rut.util.algorithm.support; 50Ov>(f@7
K#x|/b'5d
import org.rut.util.algorithm.SortUtil; % 3<7HY]~
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/** +o K*5 Y
* @author treeroot rotu#?B
* @since 2006-2-2 %vRCs]
* @version 1.0 d M;v39
*/ 4
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public class ImprovedMergeSort implements SortUtil.Sort { rouaT
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private static final int THRESHOLD = 10; ,b t
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,-SWrp`f
/* x-~=@oiv
* (non-Javadoc) ~L"?C
* SL`nt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bg^<e}{<H
*/ !d1a9los
public void sort(int[] data) { r"`7ezun:
int[] temp=new int[data.length]; QVkrhwp
mergeSort(data,temp,0,data.length-1); A(+%DZ
} CsN^u H
a:F\4x=
private void mergeSort(int[] data, int[] temp, int l, int r) { /])P{"v$^
int i, j, k; )D&xyC}
int mid = (l + r) / 2; H'&[kgnQ@
if (l == r) rbrh;\<jM
return; ~re~Ys
if ((mid - l) >= THRESHOLD) #g<6ISuf
mergeSort(data, temp, l, mid); +tJ 7ZR%
else XfN(7d0
insertSort(data, l, mid - l + 1); 9A *gW j
if ((r - mid) > THRESHOLD) l_Zx'm
mergeSort(data, temp, mid + 1, r); x
kdC-S
else "6Z(0 iu:{
insertSort(data, mid + 1, r - mid); P=Su)c
M[(pLYq:
for (i = l; i <= mid; i++) { `Ay:;I
temp = data; ]88qjKL
} %a!gN
for (j = 1; j <= r - mid; j++) { IRTD(7"oyp
temp[r - j + 1] = data[j + mid]; ;3o7>yEv
} DKF
'*
int a = temp[l]; w1eFm:'
int b = temp[r]; *q+X?3
for (i = l, j = r, k = l; k <= r; k++) { G=|~SYz
if (a < b) { ilAhw4A
data[k] = temp[i++]; 3cF8DNh
a = temp; %< `D'V@
} else { M~~)tJYsu
data[k] = temp[j--]; 9*r^1PRc
b = temp[j]; |#'n VN.;
} : [7O=[pk
} _<=h#lH
} =}.gU WV
[v\m)5
/** '.k'*=cq0
* @param data c3r`T{Kf
* @param l b`@J"E}
* @param i iu3L9UfL[
*/ m.<u!MI
private void insertSort(int[] data, int start, int len) { pTXF^:8
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); gtePo[ZH.P
} W1EYVXN
} 3#Bb4\_v
} 8:>V'j
} $sS~hy*
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堆排序: T5z]=Pd"^
72 |O&`O
package org.rut.util.algorithm.support; >H ?k0M`L
~9E_L?TW*
import org.rut.util.algorithm.SortUtil; &}
{ #g
/(.:l +[w[
/** LD1&8kJ*l
* @author treeroot )Yv=:+f
* @since 2006-2-2 ? ^W1WEBm
* @version 1.0 1GqSY|FSGp
*/ B(k tIy
public class HeapSort implements SortUtil.Sort{ *UJ4\
om2N*W.gk
/* (non-Javadoc) %S'+x[4W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n,2
*/ ixSr*+
public void sort(int[] data) { y^ |u'XK
MaxHeap h=new MaxHeap(); D}LM(s3li7
h.init(data); gWzslgO6
for(int i=0;i h.remove(); U3Z=X TB
System.arraycopy(h.queue,1,data,0,data.length); 8-Y*b89
} 0%dOi
ko
tH44\~
private static class MaxHeap{ }\Rmwm-
fBj)HoHQW
void init(int[] data){ f&mi nBU
this.queue=new int[data.length+1]; t>/x-{bH\
for(int i=0;i queue[++size]=data; d?T!)w
fixUp(size); .
ump?
M
} oJ\g0|\qwe
} f?51sr
q]I aRho
private int size=0; )c{>@WM~
8hD[z}
private int[] queue; fg3Jv*
Z|%h-~
public int get() { >Vjn]V5y
return queue[1]; _eOC,J<-~
} HFZ'xp|3dn
oDMPYkpTu
public void remove() { o+'|j#P
SortUtil.swap(queue,1,size--); VMRfDaO9
fixDown(1); <D ~hhGb
} $3G^}A"
file://fixdown e,/]]E/o
private void fixDown(int k) { >kK@tJn
int j; _&BK4?H@b
while ((j = k << 1) <= size) { 3HpqMz
if (j < size %26amp;%26amp; queue[j] j++; ]s AuL!
if (queue[k]>queue[j]) file://不用交换 Lo{wTYt:J
break; %m\:AK[}
SortUtil.swap(queue,j,k); TA-2{=8
k = j; 1>j,v+
} k`8O/J
} LSou]{R
private void fixUp(int k) { p%>sc
while (k > 1) { Wvf>5g)?
int j = k >> 1; 6r<a
if (queue[j]>queue[k]) V%r`v%ktF
break;
x2"1,1%H7
SortUtil.swap(queue,j,k); x?{UWh%
k = j; +ig%_QED[\
} :^3 )[.m
} dDpAS#'s\
|6JKB'
} QIGU i,R
l5{60$g
} TjTG+uQ
g2|Myz)
SortUtil: U]sAYp^$
z}!g2d
package org.rut.util.algorithm; iAu/ t
5;/n`Bd
import org.rut.util.algorithm.support.BubbleSort; !Zj]0,^
import org.rut.util.algorithm.support.HeapSort; .P)lQk\
import org.rut.util.algorithm.support.ImprovedMergeSort; \Mg_Q$
import org.rut.util.algorithm.support.ImprovedQuickSort; 8@m$(I+
import org.rut.util.algorithm.support.InsertSort; U|}
?{x
import org.rut.util.algorithm.support.MergeSort; 4`5yrCd
import org.rut.util.algorithm.support.QuickSort; ^z{szy?Fg
import org.rut.util.algorithm.support.SelectionSort; :25LQf^nz
import org.rut.util.algorithm.support.ShellSort; 7&ED>Bk
9=>fx
/** LORcf 1X/
* @author treeroot k8w\d+!v
* @since 2006-2-2 T$%|=gq
* @version 1.0 WTfjn|a
*/ rm[C{Pn
public class SortUtil { U
g "W6`
public final static int INSERT = 1; pZnp!!G
public final static int BUBBLE = 2; Tlw'05\{J
public final static int SELECTION = 3; h@Q^&%w
public final static int SHELL = 4; :>1nkm&Eg
public final static int QUICK = 5; MVYd\)\o
public final static int IMPROVED_QUICK = 6; Y MX9Z||
public final static int MERGE = 7; Nc:s+ o
public final static int IMPROVED_MERGE = 8; .Kb3VNgwvm
public final static int HEAP = 9; L'= \|r
RxP H[7oZ
public static void sort(int[] data) { -'&/7e6>y
sort(data, IMPROVED_QUICK); %j7b0pb
} za_b jE
private static String[] name={ 3z8i0
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" +hyOc|5
};
~non_pJ
EgjJywNhd2
private static Sort[] impl=new Sort[]{ &`r/+B_W
new InsertSort(), jf9+H!?^N
new BubbleSort(), 0,%{r.\S
new SelectionSort(), P%3pM*.
new ShellSort(), -YA,Stc-
new QuickSort(), 6mM9p)"$
new ImprovedQuickSort(), [X(4( 1i
new MergeSort(), b#VtPn]
new ImprovedMergeSort(), R;< q<i_l
new HeapSort() =oBpS=<7
}; /(dP)ysc
'75T2Ud
public static String toString(int algorithm){ w#"\*SKK
return name[algorithm-1]; idI w7hi4
} Vj*-E
kKX' Y+
public static void sort(int[] data, int algorithm) { zxyl+tU &
impl[algorithm-1].sort(data); )Qbd/zd\U
} oZ'a}kF
:{7+[LcH7
public static interface Sort { W2vL<
public void sort(int[] data); 7Uenr9)M
} 28MMH
Q
lTx_E#^s
public static void swap(int[] data, int i, int j) { *6Wiq5M>.
int temp = data; B8@mL-Z-;
data = data[j]; ^? fOccfQ{
data[j] = temp; fUT[tkb/!
} - x
} ai!u+L