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。 E1D0un
插入排序: uQYenCNXS
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package org.rut.util.algorithm.support; 4x-K0
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import org.rut.util.algorithm.SortUtil; dK41NLGQ
/** /RI"a^&9A
* @author treeroot Al+}4{Q+?
* @since 2006-2-2 z#B(1uI
* @version 1.0 d*_rJE}B
*/ ^#!\VGnL
public class InsertSort implements SortUtil.Sort{ y&(pt!I
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/* (non-Javadoc) vP%}XEF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <-DQ(0xg
*/ 9p, PW A
public void sort(int[] data) { C@Wd Pjxj
int temp; LT#EYnG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3<>DDY2bl
} "j8`)XXa(
} 0"{-<Wot}
} [P`<y#J3F
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} <+Gf!0i
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冒泡排序: iu.Jp92
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package org.rut.util.algorithm.support; -TS5g1
,AH2/^:%c
import org.rut.util.algorithm.SortUtil; mNOxe
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/** |W*5<2Q9
* @author treeroot I)MRAo
* @since 2006-2-2 {f\{{JJ]
* @version 1.0 %c@PTpAM
*/ 3e9UD N2
public class BubbleSort implements SortUtil.Sort{ m=25HH7enb
^% L;FGaA
/* (non-Javadoc) hi/Z>1ZOX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ n&2OfBJ
public void sort(int[] data) { tgj5l#P
int temp; LIll@2[
for(int i=0;i for(int j=data.length-1;j>i;j--){ F!g;}_s9
if(data[j] SortUtil.swap(data,j,j-1); &g~NkJc0c
} LqLhZBU9
} F*_+k
} m'-QVZ{(M%
} *M.,Yoj
n#sK31;yb
} QO:Z8{21So
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选择排序: 1p8pH$j'
S9[Y1qH>K
package org.rut.util.algorithm.support; P(!%Pp
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import org.rut.util.algorithm.SortUtil; Uy|Tu~
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/** juI)Do2_
* @author treeroot 0mNL!"
* @since 2006-2-2 $/
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* @version 1.0 DOOF--ua
*/ tRo` @eEX
public class SelectionSort implements SortUtil.Sort { {Ve3EYYm
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/* sL,|+>7T^M
* (non-Javadoc) #pyFIUr=w
* RL[F 9g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xo4lM
*/ v\E6N2.S
public void sort(int[] data) { RKZBI?@4
int temp; i-9W8A
for (int i = 0; i < data.length; i++) { jX0^1d@
int lowIndex = i; <fE^S
for (int j = data.length - 1; j > i; j--) { R@#xPv4o%
if (data[j] < data[lowIndex]) { eVd:C8q
lowIndex = j; WcY $=\7
} P)Rq\1:
} HL-'\wtl
SortUtil.swap(data,i,lowIndex); Q5A,9ovNZ
} G'`^U}9V\
} "gFw:t"VV
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} (b.4&P"0
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Shell排序: putRc??o;
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package org.rut.util.algorithm.support; ^CgN>-xZ?#
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import org.rut.util.algorithm.SortUtil; ;NQ}c"9
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/** -q8l"i>h=
* @author treeroot ^j2ve's:
* @since 2006-2-2 L c
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* @version 1.0 >cpv4Pgm
*/ $@l=FV_;
public class ShellSort implements SortUtil.Sort{ l%xTF@4e
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/* (non-Javadoc) \4>w17qng
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eSHsE3}h
*/ <Mu T7x-
public void sort(int[] data) { xel|,|*Yq
for(int i=data.length/2;i>2;i/=2){ 5V~vND*
s
for(int j=0;j insertSort(data,j,i); 'h^Ya?g
} L)4~:f)B
} Kzz/]
insertSort(data,0,1); l-Ha*>gX[j
} UFLx'VXd
l *{Bz5hc
/** HCCq9us
* @param data / !y~Q|<|=
* @param j 2.N)N%@
* @param i YQyI{
*/ `,]_r4~ ~
private void insertSort(int[] data, int start, int inc) { K#'$_0.
int temp; ^IyYck'y+
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); u'k+t`V&
} [ LQOP3f
} IG7,-3
} 6QJ.=.>b
C]fX=~?bGQ
} _q}Cnp5
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快速排序: P#Whh
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package org.rut.util.algorithm.support; Mlr'h}:H
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import org.rut.util.algorithm.SortUtil; jE=m4_Ntn
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/** @!j6y(@
* @author treeroot 8TG|frS
* @since 2006-2-2 UG_PrZd
* @version 1.0 h?$J;xn
*/ W /*?y &
public class QuickSort implements SortUtil.Sort{ 2(x|
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X
@pm !c#
/* (non-Javadoc) ExN$J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `.dwG3R
*/ gz~ug35
public void sort(int[] data) { +0j{$MPZ
quickSort(data,0,data.length-1); U&=pKbTe
} Rkp
+}@Y_
private void quickSort(int[] data,int i,int j){ Bo14t*(
int pivotIndex=(i+j)/2; q`.=/O'
file://swap Lb?q5_
SortUtil.swap(data,pivotIndex,j); )q.ZzijG/
8 R7w$3pp\
int k=partition(data,i-1,j,data[j]); dh.{lvlX|
SortUtil.swap(data,k,j); jl]3B
if((k-i)>1) quickSort(data,i,k-1); Yyd]s\W
if((j-k)>1) quickSort(data,k+1,j); {:b~^yW
Ju&FwY+
} ylb)SXBf
/** iq?T&44&
* @param data ~wF3$H.@;
* @param i +> d;%K
* @param j >8x)\'w
* @return 4mKH
|\g
*/ SSTn|
private int partition(int[] data, int l, int r,int pivot) { *M*WjEOA
do{ xWqV~NnE
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :475FPy]
SortUtil.swap(data,l,r); <}h<By)
} tN_=&|{WE4
while(l SortUtil.swap(data,l,r); $}0!dR2
return l; 2y|n!p
T
} $Ff6nc=
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} a7uL{*ZR
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改进后的快速排序: ){z#Y#]dP
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package org.rut.util.algorithm.support; 8SLE*c^8
n*' :,m
import org.rut.util.algorithm.SortUtil; $G 6kS@A
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/** &<_q00F
* @author treeroot :Ny[?jtc
* @since 2006-2-2 gmn b
* @version 1.0 evD=]iVD
*/ !syyOfu`}
public class ImprovedQuickSort implements SortUtil.Sort { fAz4>_4
%Y0BPTt$
private static int MAX_STACK_SIZE=4096; avM8-&h
private static int THRESHOLD=10; `HnZ{PKf
/* (non-Javadoc) `s Im&.d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L+T'TC:
*/ !Q<3TfC
public void sort(int[] data) { Wd+G)Mu_=
int[] stack=new int[MAX_STACK_SIZE]; :SW
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int top=-1; TQ:e!
32
int pivot; \kf
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int pivotIndex,l,r; PC+Soh*
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stack[++top]=0; KKb7dZbt<
stack[++top]=data.length-1;
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while(top>0){ GA`
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int j=stack[top--]; r..f$FF)\
int i=stack[top--]; =qoOr~
*JZ9'|v_H
pivotIndex=(i+j)/2; D|<_96_m
pivot=data[pivotIndex]; ZR%$f-
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SortUtil.swap(data,pivotIndex,j); -5]lHw}
%.wR@9?
file://partition Q9h=1G\K
l=i-1; 5} <OB-9
r=j; ZR0 OqSp]
do{ 'vu]b#l3
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ZZwIB3sNhf
SortUtil.swap(data,l,r); zBwqIJfM
} u|.|dv'mbp
while(l SortUtil.swap(data,l,r); ,)!%^~v
SortUtil.swap(data,l,j); ntB#2S
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if((l-i)>THRESHOLD){ lj8ficANo
stack[++top]=i; S!x;w7j
stack[++top]=l-1; ?azLaAG
} RJd*(!y
if((j-l)>THRESHOLD){ y1~
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stack[++top]=l+1; vXwMo4F*
stack[++top]=j; d0|{/4IWw;
} 3djw
trjeGSt&
} 0S4Y3bac&
file://new InsertSort().sort(data); JY"J}
insertSort(data); /.rj\,
} ,3eN&
/** 0bJT0_
* @param data $bF+J8%D
*/ c+7I
private void insertSort(int[] data) { 7J`v#
int temp; ;;rx)|\<R
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^&y*=6C
} t5S|0/f
} J}4RJ9
} &'i>d&
sa/9r9hc+
} 1M?x,N_W
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归并排序: {iq^CHAVK
c&%3k+j
package org.rut.util.algorithm.support; xaB#GdD
7mv([}Va
import org.rut.util.algorithm.SortUtil; nRw.82eK.
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/** 7h!nt=8Y
* @author treeroot EbVC4uY
* @since 2006-2-2 nGK=Nf.5
* @version 1.0 $7xfLS8Vo
*/ oa5L5Zr,A
public class MergeSort implements SortUtil.Sort{ jjv'"K2
F3$8l[O_
/* (non-Javadoc) "?<`]WG\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EV* |\ te
*/ mr_NArF
public void sort(int[] data) { !B{(EL=g
int[] temp=new int[data.length]; Z\QNn
mergeSort(data,temp,0,data.length-1); Dp#27Yzc
} Uvi@HB HJ
NU{eoqaT
private void mergeSort(int[] data,int[] temp,int l,int r){ l
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int mid=(l+r)/2; Eg&Q,dH[
if(l==r) return ; p<Tg}fg
mergeSort(data,temp,l,mid); [xGL0Z%)t
mergeSort(data,temp,mid+1,r); 'cIFbjJ
for(int i=l;i<=r;i++){ i? #U>0!
temp=data; '&gUAt
} Dk")/ ib
int i1=l; B=X_c5
int i2=mid+1; c$u#U~~
for(int cur=l;cur<=r;cur++){ )liNjY@
if(i1==mid+1) =M4wP3V/
data[cur]=temp[i2++]; {S%;By&[
else if(i2>r) uV'C_H
data[cur]=temp[i1++]; j
*N^.2
else if(temp[i1] data[cur]=temp[i1++]; n4"xVDL
else i
!SN"SY
data[cur]=temp[i2++]; LA6Ik_-F
} $m+Pl[s
} Tn38]UL
8jLO-^X<<
} 3rX8H`R
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改进后的归并排序: C8:y+pH_U;
[E}pU8.t6
package org.rut.util.algorithm.support; pf=CP%L
!+Sd%2o
import org.rut.util.algorithm.SortUtil; *iPBpEWC
5hAs/i9_
/** IUh)g1u41O
* @author treeroot 5y~B/.YY
* @since 2006-2-2
)$2h:dw_
* @version 1.0 |l?*' =
*/ .
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public class ImprovedMergeSort implements SortUtil.Sort { n{c-3w.uD
4'`*Sce}
private static final int THRESHOLD = 10; b3-+*5L
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/* =VZ0+Yl
* (non-Javadoc) zn\$6'"
* lJ4/bL2I/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VZA>ErB
*/ S?~/
V ]
public void sort(int[] data) { kAoh#8=
int[] temp=new int[data.length]; @Z9>E+udQ
mergeSort(data,temp,0,data.length-1); ?T[K{t;~jo
} `
B+Pl6l)F
l-[5Zl;"
private void mergeSort(int[] data, int[] temp, int l, int r) { *eUxarI
int i, j, k; ~$4!C'0
int mid = (l + r) / 2; Vvl8P|x.<
if (l == r) I{u+=0^Y
return; 7{
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if ((mid - l) >= THRESHOLD) DEKO]i
mergeSort(data, temp, l, mid); ~NO'8Mr
else sRGIHT#
insertSort(data, l, mid - l + 1); ]LSlo593
if ((r - mid) > THRESHOLD) ]i'gU(+;`
mergeSort(data, temp, mid + 1, r); LBhDP5qF
else RsP^T:M}$
insertSort(data, mid + 1, r - mid); &-`a`
8d\/
for (i = l; i <= mid; i++) { i}ti
temp = data; 'Z^KpW
} 7C^W <SUo
for (j = 1; j <= r - mid; j++) { ",Fqpu&M
temp[r - j + 1] = data[j + mid]; AaJnRtBS~
} ~`Rooh3m
int a = temp[l]; _~E_#cNn
int b = temp[r]; 1`EkN0iZ
for (i = l, j = r, k = l; k <= r; k++) { k|_LF[* Z
if (a < b) { *
n>YS
data[k] = temp[i++]; (
ESmP
a = temp; i.>d#S
} else { ~C ;gEE-
data[k] = temp[j--]; 1cPjgBxv#
b = temp[j]; hc5iIJ]
} hk+"c^g:j<
} EN2/3~syO-
} ]A dL
F%e5j9X`
/** zvP>8[
* @param data }q[IhjD%
* @param l {(qH8A
* @param i RB/;qdqR
*/ `}&}2k
private void insertSort(int[] data, int start, int len) { -#"7F:N1
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); N'RUtFqj
} :jioF{,
} Y^J/jA0\B
} $ &fm^1
} "+KAYsVtU
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堆排序: t_ZWd#x+;
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G# W6
package org.rut.util.algorithm.support; \{M/Do:
&IgH]?t
import org.rut.util.algorithm.SortUtil; gpzZs<ST
9jTm g%
/** ?;)F_aHp
* @author treeroot lC(g&(\{
* @since 2006-2-2 .LHzaeJCX
* @version 1.0 "?TKz:9r
*/ piKR*|F
public class HeapSort implements SortUtil.Sort{ 9\D 0mjn=l
,2_!hm/
/* (non-Javadoc) "jG-)k`a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >^hy@m
*/ &26H
public void sort(int[] data) { 2k3yf_N
MaxHeap h=new MaxHeap(); u9R:2ah&K
h.init(data); rCdf*;
for(int i=0;i h.remove(); P _3U4J
System.arraycopy(h.queue,1,data,0,data.length); &24z`ZS[w6
} s.G6?1VXlY
9,zM.g9Qv
private static class MaxHeap{ CHRO9
R~&i8n.
void init(int[] data){ K~JXP5`(
this.queue=new int[data.length+1]; L=WB'*N
for(int i=0;i queue[++size]=data; Kp_^ 2V?
fixUp(size); D&r2k
9
} M~&X?/8
} l]o)KM<
tug\X
private int size=0; /i)1BaF
FI$#x%A
private int[] queue; ]/{987
Du2v,n5@
public int get() { 15 ^5yRXC
return queue[1]; Ho:X.Z9A^
} Z'I0e9Jw
dECH/vJ^
public void remove() { B=`"!?we
SortUtil.swap(queue,1,size--); xz$S5tgDQK
fixDown(1); ';z5]O~
} W^^}-9
file://fixdown )4P5i
b
private void fixDown(int k) { Z/ypWoV(
int j; WrGz`
while ((j = k << 1) <= size) { SAEV "
if (j < size %26amp;%26amp; queue[j] j++; 8?7gyp!k_f
if (queue[k]>queue[j]) file://不用交换 4{r_EV[(
break; U@$=0*
SortUtil.swap(queue,j,k); nBVknyMFNF
k = j; Hf'yRKACj
} tyLR_@i%%
} fii\&p7z
private void fixUp(int k) { `(9B(&t^,
while (k > 1) { :tA|g
int j = k >> 1; [}OL@num
if (queue[j]>queue[k]) S}hg*mWn{$
break; \O7?!i
SortUtil.swap(queue,j,k); Y{8L ~U:
k = j; U&|$B|[
} CKTD27})
} ^gdg0y!5~
(pjmE7`"P
} j{nkus2
Mlpq2I_x
} y{eZrX|
qKL_1
~
SortUtil: 8elT/Wl
?ExfxR!~
package org.rut.util.algorithm; ~%Ws"1
rr[9sk`^H
import org.rut.util.algorithm.support.BubbleSort; Xm`K@hJ@
import org.rut.util.algorithm.support.HeapSort; f-\l<o(
import org.rut.util.algorithm.support.ImprovedMergeSort; ^saJfr x
import org.rut.util.algorithm.support.ImprovedQuickSort; Oed&B
import org.rut.util.algorithm.support.InsertSort; Lh &L5p7
import org.rut.util.algorithm.support.MergeSort; *TuoC5
import org.rut.util.algorithm.support.QuickSort; _W:
S>ij(
import org.rut.util.algorithm.support.SelectionSort; b)u9#%Q
import org.rut.util.algorithm.support.ShellSort; OD"eB?
K@{jY\AZNx
/** (D8'qx-M
* @author treeroot p;n )YY$
* @since 2006-2-2 jkNZv. )p
* @version 1.0 ^;YD3EZw
*/ mId{f
public class SortUtil { 2597#O
public final static int INSERT = 1; GX_Lxc_<f
public final static int BUBBLE = 2; e_ 6
i896
public final static int SELECTION = 3; ej<z]{`05
public final static int SHELL = 4; d1j v>tu
public final static int QUICK = 5; ,`|KNw5
public final static int IMPROVED_QUICK = 6; wH#k~`M
public final static int MERGE = 7; )K2n!Fbd
public final static int IMPROVED_MERGE = 8; !wrl.A/P
public final static int HEAP = 9; q@(N 38D
TF^]^XS'
public static void sort(int[] data) { x@k9]6/zs
sort(data, IMPROVED_QUICK); HRw,D=
} E_y h9lk
private static String[] name={ YT:5J%"
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3S5QqAm
}; i([A8C_A
fg1 zT~
private static Sort[] impl=new Sort[]{ |n&6z
new InsertSort(), )US)-\^
new BubbleSort(), L"b5P2{c
new SelectionSort(), L]tyL)
new ShellSort(), ):[[Ch_
new QuickSort(), da<1,hF
new ImprovedQuickSort(), O>>8%=5Q
new MergeSort(), ! 9N%=6\
new ImprovedMergeSort(), >ab=LDoM
new HeapSort() PHOW,8)dZh
}; g+CHF?O
eeX>SL5'i
public static String toString(int algorithm){ UmJg-~
return name[algorithm-1]; ~gAx
} Gce_gZH7{
%q!nTGU~
public static void sort(int[] data, int algorithm) { /;>EyWW
impl[algorithm-1].sort(data); bVrvb`0
} ]zm6;/S
%$}iM<
public static interface Sort { l;C_A;y\
public void sort(int[] data); _8`|KY
} NdZ:
7
5u!cA4e"
public static void swap(int[] data, int i, int j) { 1hN!
2Y:
int temp = data; [+1
i$d
data = data[j]; <*\J 6:^n
data[j] = temp; *5NffiA}-
} ])JJ`Z8Bk
} ~+g5?y