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。 )-2sk@y
插入排序: $bf&ct*$h
[V vTR#^
package org.rut.util.algorithm.support; $e(]L(o;
jg2UX
import org.rut.util.algorithm.SortUtil; cvoE4&m!
/** T6T3:DG_B
* @author treeroot m
2tw[6M
* @since 2006-2-2 6??o(ziK$
* @version 1.0 d4y?2p ?3
*/ r'!HWR
public class InsertSort implements SortUtil.Sort{ E
cS+/
q?R)9E$h
/* (non-Javadoc) X5s.F%Np!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X<pg^Y0
*/ >[,ywRJ#_}
public void sort(int[] data) { 'brt?oZ%
int temp; rE:"8d}z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h$F.(N IYe
} zDEX `~c
} J<p.J3I
} M:%6$``
2Fi~GY_
} 4r'QP .h
7'c ;$~
冒泡排序: +I>u${sVx*
<K^{36h
package org.rut.util.algorithm.support; HC%tJ:G
hxwo<wEg
import org.rut.util.algorithm.SortUtil; RK7vR~kf<
wjJM\BKr`
/** Z*AT &7
* @author treeroot GM1z@i\5
* @since 2006-2-2 M
@|n"(P
* @version 1.0 IJWUNKqo=
*/ H2f!c{t$p
public class BubbleSort implements SortUtil.Sort{ jkTh)Bm|'
2kP0//
/* (non-Javadoc) y.xt7
F1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R?%J
*/ h=:*cqp4
public void sort(int[] data) { AXnuXa(j
int temp; FU{$oCh/5
for(int i=0;i for(int j=data.length-1;j>i;j--){ xiWP^dIF
if(data[j] SortUtil.swap(data,j,j-1); kAu-=X
} 5=;LHS*
} D=B$ Pv9%
} $)HD`E
} >GbCRN~
6MewQ{h i
} RA%=_wPD
+
:i{Svb*_'
选择排序: >i6sJ)2?>
U(d K
package org.rut.util.algorithm.support; ?L%BD7
^{Vt
import org.rut.util.algorithm.SortUtil; d4#CZv[g/
:\!D 6\o6
/** Yk;-]qi7
* @author treeroot jOkc'
* @since 2006-2-2 ,A$#gLyk<
* @version 1.0 {7'Evfn)
*/ 1*x;jO>Hk
public class SelectionSort implements SortUtil.Sort { I]4L0r-
eD(;Wn
/* bvay7
* (non-Javadoc) R m&^[mv
* Z[ NO`!<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;S&PLgZ
*/ Qu
x1N
public void sort(int[] data) { m1 tYDZ"i
int temp; <Ny DrO"C3
for (int i = 0; i < data.length; i++) { +:IwP
int lowIndex = i; p\'0m0*
for (int j = data.length - 1; j > i; j--) { <W>T!;4!
if (data[j] < data[lowIndex]) { 8vp*U
lowIndex = j; 6-fdfU
} pmWt7 }
} +jEtu[ ;
SortUtil.swap(data,i,lowIndex); 1BjMVMH
} tj'xjX
} VRb+-T7"
v)f;dq ^z-
} Jbv[Ql#
]+"25V'L
Shell排序: 3}7`?$5
2l4*6rYa(
package org.rut.util.algorithm.support; '%H\k5^
zu,F 0;De
import org.rut.util.algorithm.SortUtil; <M
y+!3\A
PeX^aEc
/** H|.cD)&eYy
* @author treeroot &'V1p4'
* @since 2006-2-2 (u{?aG~
* @version 1.0 tk5zq-/d
*/ f-!P[6bY
public class ShellSort implements SortUtil.Sort{ nF)b4`Nd
f@j )t%mh
/* (non-Javadoc) f`gs/R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qk{+Y
*/ /q^\g4J
public void sort(int[] data) { m8T< x>
for(int i=data.length/2;i>2;i/=2){ n9 %&HDl4
for(int j=0;j insertSort(data,j,i); b2tUJ2p
} *QGyF`Go{
} HM]mOmL90N
insertSort(data,0,1); V JJ6q
} {f(RY j
R<)^--n
/** .eHOG]H
* @param data :~{Nf-y0`1
* @param j T2dv!}7p
* @param i QVR8b3T@
*/ <2V:tj)?P
private void insertSort(int[] data, int start, int inc) { {@&%Bq*&
int temp; xXRlQ|84
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ng{"W|
} Z1y=L$t8
} .N>Th/K8
} ,J4rKGG
W\pO`FL
} WAUgbImc{
Xl %ax!/
快速排序: )ppIO"\
c-y`Hm2"
package org.rut.util.algorithm.support; PB(q9gf"1}
BY5ODc$
import org.rut.util.algorithm.SortUtil; \Q!I;
&cSZ?0R
/** YApm)O={
* @author treeroot 69?wZfj'
* @since 2006-2-2 I^l\<1"]
* @version 1.0 A-&XgOL
*/ ^2a 63_
public class QuickSort implements SortUtil.Sort{ @OGHS}-\
N\t( rp
/* (non-Javadoc) Rn_FYP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o()No_.8H
*/ )>]@@Trx
public void sort(int[] data) { J=t@2
quickSort(data,0,data.length-1); M~ku4ZP
} NiSH$MJ_
private void quickSort(int[] data,int i,int j){ [vTk*#Cl4
int pivotIndex=(i+j)/2; ^1-Vd5g
file://swap iF*L-
SortUtil.swap(data,pivotIndex,j); I /z`)
GO]5~4k
int k=partition(data,i-1,j,data[j]); >]<4t06D
SortUtil.swap(data,k,j); UJiy]y
if((k-i)>1) quickSort(data,i,k-1); i@L_[d^|j`
if((j-k)>1) quickSort(data,k+1,j); @#2KmM~I
xO{$6M3-~
} k@[{_@>4^
/** !T"jvDYH
* @param data IwVdx^9
* @param i H(gETRh
* @param j ae>B0#=
* @return `LOW)|6r`
*/ sXwa`_{
private int partition(int[] data, int l, int r,int pivot) { I&9Itn p$
do{ '\% Kd+k
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `{1~]?-&
SortUtil.swap(data,l,r); @q"HZO[
} y#{v\h
Cz
while(l SortUtil.swap(data,l,r); 8P*d
return l; `kYcTFk
} n09P!],Xa
eL_Il.:
} [ 0z-X7=e
)?;+<,
改进后的快速排序: [?55vYt
)m$MC25
package org.rut.util.algorithm.support; ;-^8lWt
dCA!
R"HD
import org.rut.util.algorithm.SortUtil; X#k:J
5ENEx
/** ~X<?&;6
* @author treeroot Z 5 Xis"j
* @since 2006-2-2 d:#z{V_
* @version 1.0 1\Z/}FT
*/ E1D0un
public class ImprovedQuickSort implements SortUtil.Sort { (9Of,2]&E
X$*]$Ge>
private static int MAX_STACK_SIZE=4096; ]@uuB\u
private static int THRESHOLD=10; * /^}
/* (non-Javadoc) $'n?V=4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;;K
~
*/ 4+J>/ xiZ
public void sort(int[] data) { qH(HcsgD
int[] stack=new int[MAX_STACK_SIZE]; 8?LHYdJ
@xeJ$
rlu
int top=-1; `>&K=C?
int pivot; 8`z
int pivotIndex,l,r; UaB2vuL*=
j@R"AP}
stack[++top]=0; s+E:
7T9P
stack[++top]=data.length-1; 3<>DDY2bl
LSrKi$
while(top>0){ 0"{-<Wot}
int j=stack[top--]; \U>|^$4 #5
int i=stack[top--]; bT^(D^
^B!()39R?
pivotIndex=(i+j)/2; <+Gf!0i
pivot=data[pivotIndex]; "hnvND4=
7/K L<T9@
SortUtil.swap(data,pivotIndex,j); X0knM}5
lS]6SkZ6
file://partition /vI"v4
l=i-1; k8b5~A,
r=j; On0,#i=
do{ <;*w97n
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [)?yH3
SortUtil.swap(data,l,r); ft1V1 c
} aVZ/e^kk-
while(l SortUtil.swap(data,l,r); _p'u!.a?!
SortUtil.swap(data,l,j); X>%li$9J.
TZhYgV
if((l-i)>THRESHOLD){ *i {e$Zv'
stack[++top]=i; e>x+Xj1
stack[++top]=l-1; 3oV2Ek<d
} 3+&k{UZjt
if((j-l)>THRESHOLD){ t +|t/1s2
stack[++top]=l+1; f!F5d1N
stack[++top]=j; 1\J9QZX0
} ]&s@5<S[
bg5i+a,?
} g>
m)XY
file://new InsertSort().sort(data); &3Lhb}m
insertSort(data); V\AY =u
} 3WM*4
/** 1amEQ
* @param data c-"vQ>ux+
*/ = |E8z
u%
private void insertSort(int[] data) { $>T(31)c
int temp; ;Sfe.ky@6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); BIEq(/-
} h; 6G~D
} fw5+eTQ^
} tRo` @eEX
{Ve3EYYm
} qP-_xpu]R
ix"BLn]YZ
归并排序: #pyFIUr=w
7\N }QP0"u
package org.rut.util.algorithm.support; Y`3\Z6KlV
[+L!c}#
import org.rut.util.algorithm.SortUtil; %rV|{@J `
<zm:J4&>T
/** }a;H2&bu
* @author treeroot egAYJK-,!
* @since 2006-2-2 qcC(#0A>
* @version 1.0 eVd:C8q
*/ ?*.:*A
public class MergeSort implements SortUtil.Sort{ _St":9'uU
@?RaU4e
/* (non-Javadoc) }$[@*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T\#Gc4
*/ 7yjun|Lt}X
public void sort(int[] data) { I>q!co9n
int[] temp=new int[data.length]; H^dw=kS
mergeSort(data,temp,0,data.length-1); tN.$4+
} hiv {A9a?
^Vi{._r
private void mergeSort(int[] data,int[] temp,int l,int r){ %{rPA3Xoy
int mid=(l+r)/2; _SkiO}c8
if(l==r) return ; 9Vl}f^Gn
mergeSort(data,temp,l,mid); !?>I
mergeSort(data,temp,mid+1,r); L={\U3 __k
for(int i=l;i<=r;i++){ -q8l"i>h=
temp=data; ^j2ve's:
} 9{e/ V)
int i1=l; o'Fyo4Qd
int i2=mid+1; ObJ-XNcNH
for(int cur=l;cur<=r;cur++){ <oi'yr
if(i1==mid+1) ?XeaoD/
data[cur]=temp[i2++]; !pC`vZG"
else if(i2>r) j#u{(W'r
data[cur]=temp[i1++]; *>2e4j]
else if(temp[i1] data[cur]=temp[i1++]; BHiG3fP
else ohs`[U=%~
data[cur]=temp[i2++]; B`||4*
} ox_DEg7l
} R"l6|9tmP
lEw;X78+
} Yf/e(nV
+43~4_Oj
改进后的归并排序: zhbSiw
S}cR+d1}h
package org.rut.util.algorithm.support; ~2nt33"
MPK rr
import org.rut.util.algorithm.SortUtil; )a5ON8?
y4r?M8]"r
/** K#'$_0.
* @author treeroot =>kg]
* @since 2006-2-2 4GH &u,
* @version 1.0 +XSe;xk;rD
*/ A@Lr(L
public class ImprovedMergeSort implements SortUtil.Sort {
?!<Q8=
7yXJ\(6R_
private static final int THRESHOLD = 10; F'F6 &a+
5;G0$M0
/* J{\(Y#|rHs
* (non-Javadoc) & ['L7
* Mlr'h}:H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j9yOkaVEg
*/ |i~-,:/-Y
public void sort(int[] data) { BsL+9lNue
int[] temp=new int[data.length]; @!j6y(@
mergeSort(data,temp,0,data.length-1); 8TG|frS
} P{BW^kAdH
W /*?y &
private void mergeSort(int[] data, int[] temp, int l, int r) { 2(x|
%
int i, j, k; X
@pm !c#
int mid = (l + r) / 2; c##tP*(
if (l == r) kr@!j@j$
return; !
2knSS
if ((mid - l) >= THRESHOLD) ~H:=p
mergeSort(data, temp, l, mid); U&=pKbTe
else 8aC=k@YE
insertSort(data, l, mid - l + 1); _n!>*A!
if ((r - mid) > THRESHOLD) Kv9FqrDj
mergeSort(data, temp, mid + 1, r); kM[!UOnC!<
else $06('Hg&
insertSort(data, mid + 1, r - mid); 'U*#71S
dh.{lvlX|
for (i = l; i <= mid; i++) { jl]3B
temp = data; Yyd]s\W
} 'rS\9T
for (j = 1; j <= r - mid; j++) { zb4{nzX=
temp[r - j + 1] = data[j + mid]; j%D{z5,nKm
} iq?T&44&
int a = temp[l]; ~wF3$H.@;
int b = temp[r]; +> d;%K
for (i = l, j = r, k = l; k <= r; k++) { 9+$IulOvk
if (a < b) { 2+?W{yAEi
data[k] = temp[i++]; *DXX*9 0
a = temp; ?B$L'i[l
} else { F6{/iF
data[k] = temp[j--]; I{ki))F
b = temp[j]; =
Ezg3$%-
} xK)<763q>
} M2R krW#
} s;E(51V<>
W}"tf
L8
/** y\(xYB>T
* @param data eM5-v-
* @param l n%G[Y^^,
* @param i G@Sqg
*/ Z!Z{Gm3
private void insertSort(int[] data, int start, int len) { a(*"r:/lD
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )f8 ;ze
} &j ;91wEn
} 7E#h(bt j
} ixK9/5T
} Dgc6rv#
F|y0q:U
堆排序: r}sO},i
?'|GGtvm
package org.rut.util.algorithm.support; cHR*.
E.sZjo1
import org.rut.util.algorithm.SortUtil; =cb!2%?}
5O]ZX3z>
/** WNb2"W
* @author treeroot \x:U`T
* @since 2006-2-2 o8H\l\(
* @version 1.0 98| v.d
*/ FGie*t
public class HeapSort implements SortUtil.Sort{ >R_m@$`
$aB`A$'hK
/* (non-Javadoc) oM^vJ3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q4*{+$A
*/ &/2+'wCp5
public void sort(int[] data) { "L`BuAB
MaxHeap h=new MaxHeap(); {O).!
h.init(data); 2L[!~h2
for(int i=0;i h.remove(); 2<h~:
L
System.arraycopy(h.queue,1,data,0,data.length); `QRXQ c
} D5({&.X[-
8z7eL>)
private static class MaxHeap{ PhV/WjCZ
X8}\m%gCU
void init(int[] data){ *GY8#Az
this.queue=new int[data.length+1]; 2TQZu3$c
for(int i=0;i queue[++size]=data; %X^qWKix}m
fixUp(size); oR!h
eCnu
} lq]8zm<\)]
} rZ5xQ#IA
\,n
X/f
private int size=0; ;I80<SZ
^'du@XCf}
private int[] queue; fv+d3s?h
<HTz
public int get() { m\CU,9;;(
return queue[1]; 6R8>w,
} R]Z#VnL@qz
!>ZBb\EyK
public void remove() { fx4#R(N
SortUtil.swap(queue,1,size--); g:xg ~H2
fixDown(1); $%!06w#u
} <n2'm
file://fixdown AZ^>osr
private void fixDown(int k) { Anpp`>}N
int j; 6I=xjgwvf
while ((j = k << 1) <= size) { . XbDb
if (j < size %26amp;%26amp; queue[j] j++; fF>hca>
if (queue[k]>queue[j]) file://不用交换 lKU{jWA
break; `#85r{c$:
SortUtil.swap(queue,j,k); C+ Y;D:
k = j; Z+EZ</'(a
} \}9)`1D
} \o3s&{+y,
private void fixUp(int k) { xhCQRw
while (k > 1) { uPN^o.,/.
int j = k >> 1;
I![/bwObG
if (queue[j]>queue[k]) m@*aA}69
break; e]ST0J"
SortUtil.swap(queue,j,k); \fSruhD
k = j; vN@04a\h
} N+5f.c+S-
} {R[ V
RhT:]
} K4E2W9h
#lSGH 5Fp?
} >ifys)wg>
zVe,HKF/
SortUtil: "}%j'
#nft{AN
package org.rut.util.algorithm; -kP2Brm
9-&@Y
import org.rut.util.algorithm.support.BubbleSort; TNeL%s?B3
import org.rut.util.algorithm.support.HeapSort; {|j-e{*
import org.rut.util.algorithm.support.ImprovedMergeSort; $AvaOI.l
import org.rut.util.algorithm.support.ImprovedQuickSort; p`Tl)[*
import org.rut.util.algorithm.support.InsertSort; Y#-c<o}f
import org.rut.util.algorithm.support.MergeSort; OVgak>$
import org.rut.util.algorithm.support.QuickSort; EG &