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。 Zz'(!h Uy
插入排序: 5? &k? v@
rbHrG<+7zO
package org.rut.util.algorithm.support; {OL*E0
u-=S_e
import org.rut.util.algorithm.SortUtil; /JaH
/** %M2.h;9]*\
* @author treeroot 2l}FOdq
* @since 2006-2-2 $]<C C `
* @version 1.0 Mc#uWmc 7
*/ lbZ,?wm
public class InsertSort implements SortUtil.Sort{ dE7 kd=.o
-v'7;L0K
/* (non-Javadoc) B;r U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KdHR.;*
*/ r :{2}nE
public void sort(int[] data) { 9x0B9&
int temp; (\{9W
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r /63
} <*3{Twa1T
} ;nyV)+t+a
} s#/JMvQ#
s^TF+d?B
} ,A[40SZA
(C={/waJ
冒泡排序: G"T)+!6t
TRL4r_
package org.rut.util.algorithm.support; H$>D_WeJ
hZ Gr/5f
import org.rut.util.algorithm.SortUtil; 6;60}y
s3HwBA
/** ^3B{|cqf
* @author treeroot kj~)#KDN
* @since 2006-2-2 -==@7*x!Z
* @version 1.0 0}2Uj>!i
*/ LyH8T'C~
public class BubbleSort implements SortUtil.Sort{ p%EU,:I6
B q+RFo
/* (non-Javadoc) `<i|K*u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Xb\a^q
*/ b#(SDNo6
public void sort(int[] data) { [yM{A<\L
int temp; 'g$~ij ;x
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ir|Q2$W2^c
if(data[j] SortUtil.swap(data,j,j-1); {9vvj
} .7++wo!,
} O`~G'l&@T
} ck>|p09q'9
} 5V!L~#
C18pK8-
} y:WRpCZoa
dE!{=u(!i
选择排序: B(wk $2
;2q;RT`h
package org.rut.util.algorithm.support; #Z;ziM:
@a#qq`b;
import org.rut.util.algorithm.SortUtil; VQ5T$,&
QDYS}{A:V
/** WCA`34(
* @author treeroot /Mb?dVwA
* @since 2006-2-2 izsAn"v
* @version 1.0 M7^PWC
*/ [X0Wfb}{
public class SelectionSort implements SortUtil.Sort { JM!rop^
^crk8O@Fw
/* H$zjN8||"
* (non-Javadoc) 9a 9<I
* eUPG){"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '31pb9@fH
*/ EgM.wQHR]
public void sort(int[] data) { +Gqh
int temp; FiMP_ y*S
for (int i = 0; i < data.length; i++) { "2;$?*hO#
int lowIndex = i; X&nkc/erx
for (int j = data.length - 1; j > i; j--) { 5|f[evQj<S
if (data[j] < data[lowIndex]) { 7r 07N'
lowIndex = j; 3.U5Each-
} zB/$*Hd
} !;.i#c_u
SortUtil.swap(data,i,lowIndex); } R!-*Wk
} o[q
Kf
} #qWa[kB
]b4*`}\
} ftq&<8
y;<^[
Shell排序: Iz,a
Hrq
$]|fjB#D
package org.rut.util.algorithm.support; wcUf?`21,
RKFj6u
import org.rut.util.algorithm.SortUtil; mV^+`GWvo
Q<B=m6~
/** P$S>=*`n
U
* @author treeroot 6f,#O8]#5
* @since 2006-2-2 [_*%
* @version 1.0
YqX/7b+
*/ VFz(U)._
public class ShellSort implements SortUtil.Sort{ *i|O!h1St
NlXHOUw)u
/* (non-Javadoc) *2N$l>ql:k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \gaGTc2&
*/ Ug*:o d
public void sort(int[] data) { YQe9g>G&
for(int i=data.length/2;i>2;i/=2){ Rd|};-
for(int j=0;j insertSort(data,j,i); GV#"2{t
j
} O&!>C7
} S~0 mY}
m
insertSort(data,0,1); +Rn]6}5m\
} YbB8D-
s<Pk[7`*
/** ]n1@!qa48
* @param data .9{Sr[P
* @param j ag^EH"%zw
* @param i r7o63]
*/ )pLde_ k
private void insertSort(int[] data, int start, int inc) { Zc(uK{3W-
int temp; f?kA,!
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _Z z"`
} VeeQmR?u-
} Tu95qL~^
}
W(a31d
`VY -3
} bDVz+*bU}
Eh&*"&fHR
快速排序: 0G ^73Z
z[Xs=S!]I
package org.rut.util.algorithm.support; E9TWLB5A)(
P,lKa.
import org.rut.util.algorithm.SortUtil; | YmQO#''
<x@brXA
/** )w_0lm'v{r
* @author treeroot If>k~aL7I
* @since 2006-2-2 C-'n4AY^
* @version 1.0 ;4p_lw@
*/ Bpt%\LK\~O
public class QuickSort implements SortUtil.Sort{ N-EVHe'}6
h'YC!hjp
/* (non-Javadoc) z}&w7O#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :5IbOpVM
*/ `wz@l:e
public void sort(int[] data) { kaf4GME]
quickSort(data,0,data.length-1); oV"#1lp*
} H!mNHY_fA
private void quickSort(int[] data,int i,int j){ kbS+3#+
int pivotIndex=(i+j)/2; =EwC6+8*M
file://swap H"lq!C`
SortUtil.swap(data,pivotIndex,j); Z~)Bh~^A
B
3<T#
int k=partition(data,i-1,j,data[j]); hvCX,^LoJ
SortUtil.swap(data,k,j); U86bn(9K
if((k-i)>1) quickSort(data,i,k-1); 5:v"^"S z
if((j-k)>1) quickSort(data,k+1,j); c+$alwL~
O& k+;r
} ]pr( hk
/** 5<h7+ %?t9
* @param data ovJwor
* @param i ~x;1&\'k
* @param j }qU(G3
* @return w&<-pIa`
*/ Xr'Y[E[
private int partition(int[] data, int l, int r,int pivot) { hAq7v']m
do{ A+v6N>}*
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }tue`">h
SortUtil.swap(data,l,r); 60p*$Vqy
} h^o>9s/|/H
while(l SortUtil.swap(data,l,r); '&?cW#J?
return l; wh8h1I
} A (z
lX_
t@(S=i7}-
} .`qw8e}y#'
x&>zD0\
:\
改进后的快速排序: @9S3u#vP
sbn|D\p
package org.rut.util.algorithm.support; VBV y3fnj
~5LlIpf36|
import org.rut.util.algorithm.SortUtil; r5yp
jT^
"`<tq#&C1
/** OSACH0h
* @author treeroot j_L1KB*
* @since 2006-2-2 C3 >X1nU
* @version 1.0 ^1y (N>W
*/ 6iAHus-
public class ImprovedQuickSort implements SortUtil.Sort { d7
|3A
%%`Q5I
private static int MAX_STACK_SIZE=4096; /J{
e_a
private static int THRESHOLD=10; sk*AlSlM
/* (non-Javadoc) j6x1JM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n<RvL^T=
*/
}>~';l
public void sort(int[] data) { $OEhdz&Fi
int[] stack=new int[MAX_STACK_SIZE]; etcpto=Mo
u~JCMM$
int top=-1; l_?r#Qc7
int pivot; 0!Zp4>l\Z
int pivotIndex,l,r; 0uw3[,I
pwu8LQ3b{O
stack[++top]=0; !YM;5vte+
stack[++top]=data.length-1; ,WvCslZ
>~+'V.CNW
while(top>0){ CLQE@kF;
int j=stack[top--]; J83{&N2u
int i=stack[top--]; $|0?$U7!
L%hVts'
pivotIndex=(i+j)/2; 1Tb'f^M$
pivot=data[pivotIndex]; XGs
d"UW
tTX@Bb8
SortUtil.swap(data,pivotIndex,j); [,@gSb|D?
r~<I5MZY
file://partition &Fw8V=Pw
l=i-1; JDa=+\_
r=j; |._9;T-Yde
do{ ;*~y4'{z
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); KG2ij~v
SortUtil.swap(data,l,r); {[
E7Cf
} ;usv/8
while(l SortUtil.swap(data,l,r); LTof$4s
SortUtil.swap(data,l,j); +Jf45[D
Oo)MxYPU
if((l-i)>THRESHOLD){ hny(:Dj
stack[++top]=i; @i" ^b
stack[++top]=l-1; *>=|"ff
} R)[ l3
if((j-l)>THRESHOLD){ nQ\)~MKd
stack[++top]=l+1; 'N7AVj
stack[++top]=j; dn? #}^,"
} QqF&lMH
9f wFSJx
} &5x
]9
file://new InsertSort().sort(data); -pF3q2zb
insertSort(data); x)^/3
} z?b[ 6DLV;
/** )bl''
yO
* @param data {6/Yu:;
*/ *E"OQsIl
private void insertSort(int[] data) { 4ONou&T
int temp; $@VQ{S
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); BGe&c,feIc
} )`4g, W
} ZRD@8'1p
} _QS +{
@P$_2IU"
} f^EDiG>b`
.lcI"%>
归并排序: =m+'orJ1
T({]fc!c
package org.rut.util.algorithm.support; 2O*(F>>dT
t V]BcDp
import org.rut.util.algorithm.SortUtil; hYj!*P)uV
)|d]0/<
/** c~bTK"
u
* @author treeroot %wc=Mf
* @since 2006-2-2 ;X9nYH
* @version 1.0 ]jkaOj
*/ ,j'>}'wG)
public class MergeSort implements SortUtil.Sort{ dHAI4Yf4U
\nX5$[
/* (non-Javadoc) K~U5jpc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I_h8)W
*/ cTq}H_hC
public void sort(int[] data) { C}7c:4c
int[] temp=new int[data.length]; !8z,}HUdK
mergeSort(data,temp,0,data.length-1); z. 6-D
} A.D@21py
gGtl*9a=
private void mergeSort(int[] data,int[] temp,int l,int r){ ]V `L\
int mid=(l+r)/2; 2$Fy?08q
if(l==r) return ; nw)yK%`;M
mergeSort(data,temp,l,mid); 2a\?Q|1C
mergeSort(data,temp,mid+1,r); ;q3"XLV(T[
for(int i=l;i<=r;i++){ P:p@Iep
temp=data; [q<Vm-
} Z2%ySO
int i1=l; |z5`h
int i2=mid+1; 5Az4 <
for(int cur=l;cur<=r;cur++){ |k3^
eeLk
if(i1==mid+1) K<_bG<tm_
data[cur]=temp[i2++]; @N?u{|R:d
else if(i2>r) [VsTyqV a
data[cur]=temp[i1++]; ~S$\ PG4
else if(temp[i1] data[cur]=temp[i1++]; l<89[{9o
else FA+'E
data[cur]=temp[i2++]; {hE\ECT-
} =/|2f; Q
} Zeeixg-1<
npJyVh47
} 3Dm`8Xt
pKxq\U
改进后的归并排序: )PU_'n=>
5Y#W$Fx($R
package org.rut.util.algorithm.support; $O)fHD'
[5iBXOmpS=
import org.rut.util.algorithm.SortUtil; ;mi+[`E
2brxV'tk
/** |#)S`Ua1
* @author treeroot {FrcpcrQa
* @since 2006-2-2 %]iDhXLr
* @version 1.0 $4&%<'l3I
*/ c(R=f+
public class ImprovedMergeSort implements SortUtil.Sort { k4AF
.U`I
(PM!{u=
private static final int THRESHOLD = 10; MoFAQe
tr<iFT}C
/* XITh_S4fs=
* (non-Javadoc) SGp}(j>
* Q)$RE{*-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 15 /lX
*/ \QZ~w_
public void sort(int[] data) { {zri6P+s
int[] temp=new int[data.length]; pI>[^7
mergeSort(data,temp,0,data.length-1); Q.$|TbVfds
} v'vYNh
l?UFe$9(
private void mergeSort(int[] data, int[] temp, int l, int r) { IGtpL[. ;/
int i, j, k; A%zX LV=3O
int mid = (l + r) / 2; %:DH_0
if (l == r) whoQA}X>
return; /jtU<uX
if ((mid - l) >= THRESHOLD) t.ci!#/d
mergeSort(data, temp, l, mid); !qQB}sAf
else |@+/R .l
insertSort(data, l, mid - l + 1); S]O0zv^}
if ((r - mid) > THRESHOLD) $BPTk0Y
mergeSort(data, temp, mid + 1, r); @rV|7%u
else SdJGhU
insertSort(data, mid + 1, r - mid); 9 :ubPqt
!
/^Jma7n
for (i = l; i <= mid; i++) { |k:ecw
temp = data; bRhc8#kw)
} He}uE0^
for (j = 1; j <= r - mid; j++) { p:/#nmC<
temp[r - j + 1] = data[j + mid]; &Oxf^x["]
} 3om_Z/k
int a = temp[l]; ZITic&>W
int b = temp[r];
^tFbg+.
for (i = l, j = r, k = l; k <= r; k++) { KbcmK(`_
if (a < b) { c=52*&
data[k] = temp[i++]; $ncJc
a = temp; ptlcG9d-
} else { \D<w:\P
data[k] = temp[j--]; a
St
b = temp[j]; ]c=nkS
} H E'1Wa0r
} ?uBZ"^'
} zBKfaQI,
?##3E,
/"9
/** ?c;T4@mB
* @param data ~hk;OB;
* @param l E;vF
:?|
* @param i G""L1?
*/ +pefk+
private void insertSort(int[] data, int start, int len) { Bc!ZHW*&
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;
{ MK
} WA$Ug
} r) SG!;X
} &l0-0T>
} FB\lUO)U\c
us0{y7(p
堆排序: 6zf3A:]&{
cj5;XK
package org.rut.util.algorithm.support; !gKz=-C
Bw`7ND}&
import org.rut.util.algorithm.SortUtil; yltzf
#%
|_A DG
/** Ny6 daf3f
* @author treeroot iem@K
* @since 2006-2-2 0]._|Ubn6)
* @version 1.0 9eh9@~mU"l
*/ XeJ|Z)qZ
public class HeapSort implements SortUtil.Sort{ `-J$7)d@
mx ]a@tu
/* (non-Javadoc) jO9w7u6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i"HENJyCb
*/ 0)^$9Z
public void sort(int[] data) { G8Qo]E9-/
MaxHeap h=new MaxHeap(); !idQ-&
h.init(data); (3[Lz+W.u
for(int i=0;i h.remove(); kR1dk4I4
System.arraycopy(h.queue,1,data,0,data.length); K@0/iWm*
} uh8+Y%V
p
#zL0P>P'a
private static class MaxHeap{ N;6@f*3_i
/ad]pdF
void init(int[] data){ hHoc>S6^M
this.queue=new int[data.length+1]; +,H6)'#Z
for(int i=0;i queue[++size]=data; )dMXn2O
fixUp(size); wBb J
\
} rF*L@HI
} KVC$o+<'`%
|rhCQ"H
private int size=0; )=:gO`"D
8!!iwmH{
private int[] queue; M.(shIu!+
-2\%?A6L
public int get() { j0]|$p
return queue[1]; `O'@TrI
} [tP6FdS/M=
UojHlTg#bT
public void remove() { f5droys9
SortUtil.swap(queue,1,size--); Og8'K=O#
fixDown(1); |fd}B5!c
} GY[+HgT
file://fixdown Z
^w5x :
private void fixDown(int k) { xwm-)~L4T
int j; bB#6Xx
while ((j = k << 1) <= size) { QSNLo_z
if (j < size %26amp;%26amp; queue[j] j++; YdT-E
if (queue[k]>queue[j]) file://不用交换 r8uc. z2%
break; t622b?w
SortUtil.swap(queue,j,k); |}O9'fyU8
k = j; FX6*`
} =q4QBAW
} vA(')"DDT
private void fixUp(int k) { kV mJG#
while (k > 1) { 1q&gTv