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。 wUg=jnY
插入排序: 8In~qf
F!?f|z,/
package org.rut.util.algorithm.support; N48X[Q*
ox.kL
import org.rut.util.algorithm.SortUtil; (VC Jn<@@
/** GqP02P'2
* @author treeroot y'oH>l+n
* @since 2006-2-2 +#UawYLJ
* @version 1.0 #{k+^7aQ
*/ jgEYlZ
public class InsertSort implements SortUtil.Sort{ cuf]-C1_
!w!k0z]
/* (non-Javadoc) 0Nk!.gY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x=\W TC
*/ #+h#b%8
public void sort(int[] data) { cV`NQt <W
int temp; .
Wd0}?}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j,i)ecZ>
} >G [:Q
s
} YiL^KK
} }U}ppq0Eo
YoQQ ,
} %l%2 hvGZ
p]s)Xys
冒泡排序: d?/g5[
VGCd)&s
package org.rut.util.algorithm.support; )T
slI
x>J(3I5_b
import org.rut.util.algorithm.SortUtil; /;y`6WG%2
'w/S6j
/** t="nmjQs
* @author treeroot GbkDs-
* @since 2006-2-2 .F _u/"**
* @version 1.0 @6;ZP1
*/ {?mb.~(
public class BubbleSort implements SortUtil.Sort{ ']^]z".H
4 4WyfpTJ*
/* (non-Javadoc) ?jbx7')
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G;pc,\MF
*/ i8*(J-M
public void sort(int[] data) { mZnsr@KF
int temp; g\49[U}[~F
for(int i=0;i for(int j=data.length-1;j>i;j--){ h>z5m
if(data[j] SortUtil.swap(data,j,j-1); tC/+
} fNrpYR X
} zCS }i_ p
} tI.ho
} |*8X80<
4~vn%O6n
} %Go/\g
-_Z
选择排序: Uw)B(;Hy?
T#Z#YM k
package org.rut.util.algorithm.support; O/&Qzt
#! (2@N8
import org.rut.util.algorithm.SortUtil; I;{Ua*
IFt aoK
/** 9T2y2d!X
* @author treeroot x|Ms2.!
* @since 2006-2-2 3CSwcD
* @version 1.0 A(+V{1L'
*/ Hm~.u.)\.
public class SelectionSort implements SortUtil.Sort { Ga
<=Di):
;hd%wmE
/* +.u
HY`A
* (non-Javadoc) \5HVX/
* 8SupoS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T.WN9=N
*/ \MAv's4b@
public void sort(int[] data) { BY$L[U;@T
int temp; I5Rd~-="G
for (int i = 0; i < data.length; i++) { 6>b#nFVJ
int lowIndex = i; )L"J?wTe
for (int j = data.length - 1; j > i; j--) { qE6D"+1y7
if (data[j] < data[lowIndex]) { Z|3[Y@c\
lowIndex = j; {{ 1qkG9$
} zUWWXC%R
} YTfi g{a
SortUtil.swap(data,i,lowIndex); 2H~E~6G
} H<*n5r(c
} 5VGZ5,+<<
7e)j|a-!<
} EgOiJH
"DecS:\
Shell排序: \`*]}48Z
h~=~csya:
package org.rut.util.algorithm.support; Pf3F)y [=
{J;(K~>?m
import org.rut.util.algorithm.SortUtil; F]RZP/D`
AbX#wpp!
/**
"'Q~&B;@
* @author treeroot +4[Je$qYa
* @since 2006-2-2 DeQZDY //
* @version 1.0 J[\8:qE
*/ q9Lq+4\
public class ShellSort implements SortUtil.Sort{ V#~.n;d
&i*e&{L7
/* (non-Javadoc) >ATccv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #Xi9O.
*/ 0"mr*hyj
public void sort(int[] data) { @8cn<+"b
for(int i=data.length/2;i>2;i/=2){ i06|P I
for(int j=0;j insertSort(data,j,i); T4;gF6(0]
} 78IY&q:v&0
} U6YQ*%mZ_
insertSort(data,0,1); \.=,}sV2Z
} L~Xzo
"~08<+
/** c$;Cpt@-j
* @param data byk9"QeY\
* @param j Se!B,'C%
* @param i 0.^67'
*/ aOmQ<N]a
private void insertSort(int[] data, int start, int inc) { %^iBTfq2hc
int temp; aM\Ph&c7e'
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |O*?[|`H
} 5^N`~
} WG&WPV/p
} VE^IA\J x
X/D%
cQ6
} NLev(B:OQH
t2FA|UF
快速排序: 07vzVsQ}p
?|GwuG8g
package org.rut.util.algorithm.support; 0)9n${P7d
$$T a
import org.rut.util.algorithm.SortUtil; tG0
&0`
S6{y%K2y&
/** )kE1g&
* @author treeroot Bdib)t[
* @since 2006-2-2 R`%O=S*]
* @version 1.0 0BP=SCi
*/ EV
R>R
public class QuickSort implements SortUtil.Sort{ wqJ1^>TB
'.XR,\g>
/* (non-Javadoc) wHs4~"EY9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @-O%u*%J
*/ or[! C%
public void sort(int[] data) { 2'}/aL|G
quickSort(data,0,data.length-1); w2V:g$~,
} 2&2t8.<
private void quickSort(int[] data,int i,int j){ 3o_@3-Y%
int pivotIndex=(i+j)/2; [h0)V(1KR
file://swap Shu=oweJ
SortUtil.swap(data,pivotIndex,j); /,+&O#SX
|bk$VT4\
int k=partition(data,i-1,j,data[j]); =qww|B92
SortUtil.swap(data,k,j);
YS>VQl
if((k-i)>1) quickSort(data,i,k-1); &[[Hfs2:-]
if((j-k)>1) quickSort(data,k+1,j); r@G34QC+
4z^VwKH\ j
} fczH^+mI
/** !PEP`wEKdp
* @param data e @|uG %
* @param i nO8e'&|
* @param j {fn1sGA
* @return N. 0~4H
%U
*/ `M ~-(,++
private int partition(int[] data, int l, int r,int pivot) { 9Hs5uBe
do{ dMa6hI{k
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F2',3
SortUtil.swap(data,l,r); %5<Xa
} y+M9{[ i/O
while(l SortUtil.swap(data,l,r); @zig{b 8
return l; 7Dz-xM_?
} E<tJ8&IGk
bD V/$@p
} gnw?Y 2
<a&$D
改进后的快速排序: hJ~=eYK?J
IGI$,C
package org.rut.util.algorithm.support; =gO4B-[
1*OZu.NdK
import org.rut.util.algorithm.SortUtil; AL[,&_&uV
-\8v{ry
/** !InC8+be
* @author treeroot 77%I%<#
* @since 2006-2-2 et@<MU@`
* @version 1.0 :Mq{ES%
*/ Uq(fk9`6
public class ImprovedQuickSort implements SortUtil.Sort { >'&|{s[m
;x-]1 xx_
private static int MAX_STACK_SIZE=4096; $kY ]HI
private static int THRESHOLD=10; \C"hL(4-
/* (non-Javadoc) {0\9HI@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jR^_1bu
*/ 1-8G2e
public void sort(int[] data) { US]I[Y6V
int[] stack=new int[MAX_STACK_SIZE]; yzyK$WN\[3
U;FJSy
int top=-1; g<YN#
int pivot; Jmun^Q/h
int pivotIndex,l,r; MJy(B><
1W{t?1[s
stack[++top]=0; 1"RC!
stack[++top]=data.length-1; (A~w IKY,
XM:\N$tg
while(top>0){ 70N Lv
int j=stack[top--]; X 3(*bj>P
int i=stack[top--]; N$P\$
;r95i1a'
pivotIndex=(i+j)/2; g
?{o2gG
pivot=data[pivotIndex]; X=%e'P*X
t+A9nvj)
SortUtil.swap(data,pivotIndex,j); 4&G
#Bi
6rN.)dL.#N
file://partition [(Ihu e
l=i-1; H~lvUHN
r=j; ?l^NKbw
do{ 8]xYE19=
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); S.*LsrSV
SortUtil.swap(data,l,r); (vwKC
D&
} nYy+5u]FG
while(l SortUtil.swap(data,l,r); r|Q/:UV?w
SortUtil.swap(data,l,j); 1krSX2L
6sNw#pqh
if((l-i)>THRESHOLD){ GyQvodqD
stack[++top]=i; D[3QQT7c
stack[++top]=l-1; &Yd6w}8
} SX[
if((j-l)>THRESHOLD){ r)[Xzn
stack[++top]=l+1; M^.>UZKyl
stack[++top]=j; [s~6,wz
} af}JS2=$
E[c6*I
} Dh)(?"^9A
file://new InsertSort().sort(data); O@`KGZEPY
insertSort(data); ~SYW@o
} .FA99|:
/** MCl-er"]D
* @param data "$A5:1;
*/ -mG ,_}F
private void insertSort(int[] data) { z(1`Iy
M
int temp; |F&02f!]@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pSodTG$E
} _tpOVw4I
} Gk:k
px
} 3|4<SMm
?$ M:4mX
} H}gp`YW:4
<AU0ir
归并排序: wx_j)Wij6
- 9a4ej5
package org.rut.util.algorithm.support;
fxc?+<P
KxQMPtHstz
import org.rut.util.algorithm.SortUtil; o~26<Lk
^n*:zmD
/** c uHF^l
* @author treeroot $aHHXd}@t2
* @since 2006-2-2 RhkTN'vO
* @version 1.0 UD ;UdehC
*/ +IG=|X
public class MergeSort implements SortUtil.Sort{ "pc
t#
'CCAuN>J
/* (non-Javadoc) [I}xR(a@n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #q6#nfi"
*/ >O~
public void sort(int[] data) { lg*?w/JX+
int[] temp=new int[data.length]; Hd_,`W@
mergeSort(data,temp,0,data.length-1); 0e(4+:0
} +6:jm54
i'[! 'HY
private void mergeSort(int[] data,int[] temp,int l,int r){ :jFZz%
int mid=(l+r)/2; $0Un'"`S
if(l==r) return ; R]4
h)"
mergeSort(data,temp,l,mid); 3;3 cTXR?=
mergeSort(data,temp,mid+1,r); .HPa\b\L>
for(int i=l;i<=r;i++){ ba^/Ar(B
temp=data; -x-EU#.G
} 6_>(9&g`zV
int i1=l; 2Mj_wc
int i2=mid+1; M"yOWD~s~
for(int cur=l;cur<=r;cur++){ o,{]<Sm
if(i1==mid+1) me$nP}%C&
data[cur]=temp[i2++]; 'u6n,yRm
else if(i2>r) a&u!KAQ
data[cur]=temp[i1++]; %uvA3N>
else if(temp[i1] data[cur]=temp[i1++]; $f+cd8j?o
else HJt
'@t=Ak
data[cur]=temp[i2++]; 6xx(o
} Wu'9ouw!
} F12$BKDH
|qpFR)l
} .TNGiUzG
?nZe.z-%6
改进后的归并排序: WG
+]
~bz$] o-<
package org.rut.util.algorithm.support; 9K-,#a
2x~Pq_?y
import org.rut.util.algorithm.SortUtil; M,<UnAVP-
aI1tG
/** 0bteI*L
* @author treeroot ZtY?X- 4_
* @since 2006-2-2 ~Gl5O`w(
* @version 1.0 d
'\^S}
*/ 0 gR_1~3
public class ImprovedMergeSort implements SortUtil.Sort { S}qGf%
rA}mp]
private static final int THRESHOLD = 10; k+~2
vmS
-K/c~'%'*
/* f6 s .xQ
* (non-Javadoc) 9U Hh#
* *bUOd'vh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0bOT&Z^
*/ *'@sm*
public void sort(int[] data) { QwL*A `@
int[] temp=new int[data.length]; 25<qo{
mergeSort(data,temp,0,data.length-1); $GYy[8{:V
} 1p=bpJC
2 a*+mw
private void mergeSort(int[] data, int[] temp, int l, int r) { MeV*]*
int i, j, k; B qLL]%F
int mid = (l + r) / 2; 03"FK"2S
if (l == r) .@$A~/ YU
return; 6W:FT Pt44
if ((mid - l) >= THRESHOLD) j1=su~
mergeSort(data, temp, l, mid); Hz%<V*\{
else r 5t{I2
insertSort(data, l, mid - l + 1); 4RfBXVS
if ((r - mid) > THRESHOLD) 1\nzfxx
mergeSort(data, temp, mid + 1, r); O`T_'.Lk
else zx@L sp
insertSort(data, mid + 1, r - mid); c/V0AKkS
8
Rln\
for (i = l; i <= mid; i++) { syCT)}T6z
temp = data; RwhKW?r+
} 1fC)&4W
for (j = 1; j <= r - mid; j++) { IkO[R1K
temp[r - j + 1] = data[j + mid]; <k{_YRB
} tlB-s;
int a = temp[l];
n%Oq"`w4
int b = temp[r]; Q{CRy-ha
for (i = l, j = r, k = l; k <= r; k++) { $F NH:r<
if (a < b) { )Br#R:#
data[k] = temp[i++]; |(CgX6 l3
a = temp; >=;hnLu
} else { `U&'71B^
data[k] = temp[j--]; 1L?d/j
b = temp[j]; 204"\mv
} #qv!1$}2
} u=Xpu,q
} P"o|kRO
*$Zy|&[Z
/** +O^} t
* @param data u?F.%j-
* @param l AnK X4Q
* @param i 3*\hGt,ZP
*/ aU_l"+5>vq
private void insertSort(int[] data, int start, int len) { CeM%?fr5
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2/\I/QkTs
} Mi\-
9-
} YFW/
Fa\7
} }$g"|;<ha
} ;#mm_*L%@
t<`d*M2w
堆排序: g:@4/+TSt
F>GPi!O
package org.rut.util.algorithm.support; [f}`reRlZ
5.D0 1?k
import org.rut.util.algorithm.SortUtil; Pq@-`sw
yYSoJqj
Q
/** DQ9aq.;
* @author treeroot <{@ D^L6h
* @since 2006-2-2 \U##b~Z,g
* @version 1.0 Y#6LNI
*/ {?"X\5n0
public class HeapSort implements SortUtil.Sort{ H )CoByaj
lJ,\^\q
/* (non-Javadoc) 8kvA^r`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >V4r'9I
*/ f1sp6S0V\
public void sort(int[] data) { $4qM\3x0,
MaxHeap h=new MaxHeap(); reM~q-M~o@
h.init(data); OR37
for(int i=0;i h.remove(); A.h0 H]*Ma
System.arraycopy(h.queue,1,data,0,data.length); \v$zU
} rhZp
<4~SFTWY
private static class MaxHeap{ u%Mo.<PI
_!Pi+l4p/}
void init(int[] data){ D7muf
this.queue=new int[data.length+1]; H328I}7
for(int i=0;i queue[++size]=data; ivB,s5<
fixUp(size); *{5/" H5
} ;=k{[g 'gv
} -yb7s2o
kD7'BP/#
private int size=0; _18Z]XtX
5NhAb$q2Y
private int[] queue; qq3/K9 #y
?%#no{9
public int get() { 0C\cM92o
return queue[1]; s,AJR
[
} 2.]d~\
Dy8H(_
public void remove() { LC$M_Cpw
SortUtil.swap(queue,1,size--); f.bw A x
fixDown(1); 2aX$7E?
} IKaW],sr#
file://fixdown =e0MEV#s.
private void fixDown(int k) { C' {B
int j; -$Kc"rX
while ((j = k << 1) <= size) { g9NE>n(3
if (j < size %26amp;%26amp; queue[j] j++; s@GE(Pu7
if (queue[k]>queue[j]) file://不用交换 yeBfzKI{b
break; XsDZ<j%x89
SortUtil.swap(queue,j,k); Ts3!mjn
k = j; 7oc Ng
} "]Uj _d
} Bjj=UtI
private void fixUp(int k) { f8V
)nM+v"
while (k > 1) { 2J%L%6z8~
int j = k >> 1; IXlk1tHN4I
if (queue[j]>queue[k]) BE],PCpPr
break; 0c1=M|2
SortUtil.swap(queue,j,k); l!W!Gz0to
k = j; (I(U23A~
} /m,i,NX07
} b\zq,0%
-B!
a
O65^
} ;' |CSjco
>n(dyU @
} Sa0IRC<LV
Xwjm T
SortUtil: b?VByJl
7/_|/4&
package org.rut.util.algorithm; a=x&sz\x
dmcY]m
import org.rut.util.algorithm.support.BubbleSort; 9j5|o([J
import org.rut.util.algorithm.support.HeapSort; VS_\bIC
import org.rut.util.algorithm.support.ImprovedMergeSort; q?)5yukeF
import org.rut.util.algorithm.support.ImprovedQuickSort; TU6YS<
import org.rut.util.algorithm.support.InsertSort; aY;34SF
import org.rut.util.algorithm.support.MergeSort; e'c3.sQ|?
import org.rut.util.algorithm.support.QuickSort; 'HCRi Z<
import org.rut.util.algorithm.support.SelectionSort; ;l<Hen*
import org.rut.util.algorithm.support.ShellSort; 49O_A[(d
=<)/lz] H
/** (l9jczi
* @author treeroot /u`Opv&I
* @since 2006-2-2 <P&X0S`O
* @version 1.0 [eBt Dc*w
*/ Evqy e;
public class SortUtil { L; A#N9
public final static int INSERT = 1; ^,?>6O
public final static int BUBBLE = 2; ="f-I9y
public final static int SELECTION = 3; Io>U-Zd\>
public final static int SHELL = 4; "}ur"bU1
public final static int QUICK = 5; gB+CM?
LKq
public final static int IMPROVED_QUICK = 6; ygX!'evY
public final static int MERGE = 7; ,,6lQ]wG
public final static int IMPROVED_MERGE = 8; *~cNUyd
public final static int HEAP = 9; Ux{QYjFE
heB![N0:
public static void sort(int[] data) { fA0wQz]u
sort(data, IMPROVED_QUICK); 4>H0a
}
"*V'
private static String[] name={ =CS$c?
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &gJ@"`r4
}; ,KF>@3f
6 OvH"/X4
private static Sort[] impl=new Sort[]{ zlTLp-^Y
new InsertSort(), SB5qm?pT8<
new BubbleSort(), b"`fS`@/MW
new SelectionSort(), H@ty'z?
new ShellSort(), AW9%E/{
new QuickSort(), DT6BFx
new ImprovedQuickSort(), rM6S%rS
new MergeSort(), {{[@ X
new ImprovedMergeSort(), z|Xt'?9&n
new HeapSort() Z0D&ayzkh^
}; T nyLVIP
0}'/p N>
public static String toString(int algorithm){ !U(KQ:j
return name[algorithm-1]; K|6}g7&X
} xG Y!r"[
f,LeJTX=
public static void sort(int[] data, int algorithm) { AXi4{Q,
impl[algorithm-1].sort(data); eb,QT\/G
} ;- Vs|X
K;s`
public static interface Sort { ^L
Xr4
public void sort(int[] data); 9ao?\]&t
} ;ByCtVm2
#q9BU:
public static void swap(int[] data, int i, int j) { E%stFyr9`/
int temp = data; Do^yer~
data = data[j]; -xJ\/"A
data[j] = temp; upJy,|5
} }v?l0Gk(
} %?qzP'