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。 '?m2|9~
插入排序: Q3=5q w^
RFS}!_t+|
package org.rut.util.algorithm.support; KC; o
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import org.rut.util.algorithm.SortUtil; ;Qq_
/** 6RxI9{ry
* @author treeroot CeOA_M
* @since 2006-2-2 Sn'!Nq>
* @version 1.0 =$bF[3D
*/ CDtL.a\
public class InsertSort implements SortUtil.Sort{ Wz R)R9x]
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/* (non-Javadoc) |[5;dt_U/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2
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*/ :ln|n6X
public void sort(int[] data) { (i(E~^O
int temp; n7~3~i`D;
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t>%b[(a
} IFr"IOr'l
} mT@Gf>}/A
} D}}?{pe
E Lq1
} ;c]O *\/
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冒泡排序: uMGy-c
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package org.rut.util.algorithm.support; !<j4*av:G
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import org.rut.util.algorithm.SortUtil; [cEGkz
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/** A_ &IK;-go
* @author treeroot .j,xh )v"
* @since 2006-2-2 Hr}"g@ <
* @version 1.0 tAep_GR
*/ Glw|*{$
public class BubbleSort implements SortUtil.Sort{ $U7/w?gc'
=Oh$pZRymu
/* (non-Javadoc) ,-EN{ed
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^9hc`.5N&?
*/ Cpd>xXZz&S
public void sort(int[] data) { yr>J^Et%_
int temp; yVn%Bz'
[
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3HP
{
a
if(data[j] SortUtil.swap(data,j,j-1); j?$B@Zk
} DH_~,tK9
} mM/#(Ghl
} _'V o3b
} # Dgkl
yRyRH%p)
} 7u^wO<
bL0]Yuh
选择排序: ~MB)}!S:
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package org.rut.util.algorithm.support; ]x8Y]wAU&{
+U,t*U4,
import org.rut.util.algorithm.SortUtil; ]
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/** $?:IRgAr
* @author treeroot .@mZG<vg
* @since 2006-2-2 s/~[/2[bnf
* @version 1.0 ?
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*/ im:[ViR {
public class SelectionSort implements SortUtil.Sort { 9%ct
m^ar:mK@
/* Xu_1r8-|=b
* (non-Javadoc) r:0RvWif
* Dvz 6 E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VY~*QF~P
*/ =|$U`~YB
public void sort(int[] data) { c; .y
int temp; ]moBVRd
for (int i = 0; i < data.length; i++) { p\'X%R
int lowIndex = i; G^|b*n!!
for (int j = data.length - 1; j > i; j--) { UDJ#P9uy
if (data[j] < data[lowIndex]) { PPpaH!(D
lowIndex = j; k"BM1-f
} 5)k/4l '
} L!/{Z
SortUtil.swap(data,i,lowIndex); 9,Dw;|A]
} {#z47Rz
} u|ihUE!h
32J/
} <daH0l0
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Shell排序: $E:z*~?
^Vh^Z)gGi
package org.rut.util.algorithm.support; %O(W;O
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import org.rut.util.algorithm.SortUtil; bfJ<~ss/
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/** F!C<^q~!
* @author treeroot r_'];
* @since 2006-2-2 'S
v
V10$5
* @version 1.0 ,e`n2)
*/ Ug gg!zA
public class ShellSort implements SortUtil.Sort{ @wAYhnxq
eK3d_bF+
/* (non-Javadoc) :u@ w;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `N}'5{I
*/ ~U8#yo
public void sort(int[] data) { )r*F.m{&:
for(int i=data.length/2;i>2;i/=2){ /k\)q
for(int j=0;j insertSort(data,j,i); eeBw\f0
} Ix=(f0|
} !]7L9TGn
insertSort(data,0,1); 3dtL[aVwY
} -=1>t3~\
!14v Ovj4{
/** cZ.p
* @param data @v/Ae_q!
* @param j 0Y~5|OXJ
* @param i 1Sns$t%b
*/ 3ox|Mz<aZX
private void insertSort(int[] data, int start, int inc) { }b<w \9AF
int temp; -"Nvu
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uAk>VPuuZ
} &,/-<y-S
} *'n=LB8R
} {ueDwnZ
4>HQ2S{t
} O6q5qA
VF<VyWFC0`
快速排序: kk
CoOTe&
#xq|/JWs
package org.rut.util.algorithm.support; YcSPU(
? EhIK
import org.rut.util.algorithm.SortUtil; &y3;`A7,
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/** 1yc$b+TH
* @author treeroot [A;0IjKam
* @since 2006-2-2 U:aaa
* @version 1.0 Ci3
b(KR
*/ X4bZ4U*
public class QuickSort implements SortUtil.Sort{ WZbRR.TxO
U'} [:h~)
/* (non-Javadoc) leXdxpc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZtI@$ An
*/ $D*Yhv!/
public void sort(int[] data) { Ivq|-LDNc
quickSort(data,0,data.length-1); Z+Fh I^
} Fdx4jc13w
private void quickSort(int[] data,int i,int j){ ,nniSG((3
int pivotIndex=(i+j)/2; }hc+ENh
file://swap 2.a{,d
SortUtil.swap(data,pivotIndex,j); #Y'ub
5s
>+[{m<Eq
int k=partition(data,i-1,j,data[j]); ge{%B~x
SortUtil.swap(data,k,j); $cO-+Mr-~
if((k-i)>1) quickSort(data,i,k-1); Gx%f&H~Z^
if((j-k)>1) quickSort(data,k+1,j); ch/DBu
%LnG^L
} 4"+v:t)z6{
/** D<^K7tJui
* @param data EuD$^#
* @param i #6 $WuIG
* @param j k,/2]{#53d
* @return G|UeR=/
*/ !@)tkhP
private int partition(int[] data, int l, int r,int pivot) { drB$q[Ak9
do{ (%]M a
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~#P` 7G
SortUtil.swap(data,l,r); cMAY8$
} =A/$[POr
while(l SortUtil.swap(data,l,r); OV7SLf
return l; *Y ?&N2@c
} x{VUl
%cq8%RT
} 5pxw[c53#
O]9PYv=^
改进后的快速排序: B!1L W4^
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package org.rut.util.algorithm.support; <'P+2(Oi
#4^D'r>pJ
import org.rut.util.algorithm.SortUtil; |OBZSk1jp
KC-@2,c9V
/** idZ]d6
* @author treeroot %wmbFj}
* @since 2006-2-2 G>+iisb%
* @version 1.0 d((,R@N'
*/ aw1f;&K4
public class ImprovedQuickSort implements SortUtil.Sort { kNUNh[
CN#2-[T
private static int MAX_STACK_SIZE=4096; 4AN(4"$N
private static int THRESHOLD=10; k=.pcDX
/* (non-Javadoc) 8wzQr2:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SrvC34<7
*/ ia%U;M
public void sort(int[] data) { '# J/e0o@
int[] stack=new int[MAX_STACK_SIZE]; b5UIX Kim
g;</ |Z
int top=-1; DcNwtts
int pivot; ' "o2;J)7
int pivotIndex,l,r; 24d{ol)
@Yzb6@g"
stack[++top]=0; y6Ea_v
stack[++top]=data.length-1; 8G_KbS
!;&{Q^}
while(top>0){ P<R'S
int j=stack[top--]; PWN$x`h g[
int i=stack[top--]; 7V;wCm#b
>L88`
pivotIndex=(i+j)/2; 9*xv
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pivot=data[pivotIndex]; -T .C?Q g
}LdeU:E4
SortUtil.swap(data,pivotIndex,j); K55]W2I9
Q+^ "v]V`d
file://partition h8? E+0
l=i-1; jH]?vpP
r=j; |&0Cuwt
do{ oJor
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); w?A6S-z
SortUtil.swap(data,l,r); p!p:LSk"/b
} ,Zs*07!$f
while(l SortUtil.swap(data,l,r); 4k=LVu]Kcr
SortUtil.swap(data,l,j); "5$2b>_UE
[!>DQE
if((l-i)>THRESHOLD){ ;cW9NS3:
stack[++top]=i; q-d#bKIf
stack[++top]=l-1; {s~t>R p+
} E9PD1ADR
if((j-l)>THRESHOLD){ ?8@EBPpC
stack[++top]=l+1; pq<2:F:Kl
stack[++top]=j; C4t@;U=x
} oa8xuFu(n
`:;fc
} vI+X9C?
file://new InsertSort().sort(data); t,R4q*
insertSort(data); ynG@/S6)K
} mu&%ph=
/** [[vb w)u
* @param data fk?(mxx"
*/ LP5@ID2G
private void insertSort(int[] data) { Xe:e./@
int temp; $|!@$A j
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Uk= L?t
} 2/#%^,Kb2
} g.eMGwonTJ
} qZ DP-
dp#'~[ j
} Q%^!j_#
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归并排序: $ 2PpG|q
!6DH6<HC
package org.rut.util.algorithm.support; !ZTBiC5R
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import org.rut.util.algorithm.SortUtil; }|(v0]
p& +w
/** Tn(c%ytN
* @author treeroot iP+3)
* @since 2006-2-2 V75P@jv5J
* @version 1.0 *S{fyYyM
*/ p+O,C{^f
public class MergeSort implements SortUtil.Sort{ Y8%*S%yO
vHxLn/
/* (non-Javadoc) bf-V Q7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i[a1ij=
*/ CxJkT2
public void sort(int[] data) { =@0/.oSD
int[] temp=new int[data.length]; .3< sv
mergeSort(data,temp,0,data.length-1); %tJ@)
} !O*uQB
xE%sPWbj
private void mergeSort(int[] data,int[] temp,int l,int r){ )NL_))\
int mid=(l+r)/2; I\:(`)"r
if(l==r) return ; +'QE-#%{=
mergeSort(data,temp,l,mid); ^%~ux0%^T
mergeSort(data,temp,mid+1,r); *HXx;:
for(int i=l;i<=r;i++){ x*2I]4
temp=data; k1Thjt
} g|PRk9
int i1=l; a C<
int i2=mid+1; =P\Tk)(`
for(int cur=l;cur<=r;cur++){ kMY1Xb
if(i1==mid+1) [ _wenlkm
data[cur]=temp[i2++]; "`8~qZ7k
else if(i2>r) ju {\7X5
data[cur]=temp[i1++]; "Zq)y_1
else if(temp[i1] data[cur]=temp[i1++]; c6Z\ecH9
else m(?ZNtBQt
data[cur]=temp[i2++]; 55]E<2't
} %_%/ym
} UCF'%R
RYem(%jq
} i*-L_!cc:
H_<hZUB
改进后的归并排序: >lIQM3
z9)I@P"
package org.rut.util.algorithm.support; F1UTj"<e
[[;vZ
import org.rut.util.algorithm.SortUtil; -cW'g
WyDL ah^/
/** n%1I}?$fO
* @author treeroot i%eq!q
* @since 2006-2-2 `U[s d*C"
* @version 1.0 VQ((c:+!
*/ 6e.?L
public class ImprovedMergeSort implements SortUtil.Sort { BmGY#D,
P]b *hC
private static final int THRESHOLD = 10; 8*t8F\U#
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/* SBynu
* (non-Javadoc) +X &b
* Zr
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?*h2:a$
*/ &mJ
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public void sort(int[] data) { h8me.=S&
int[] temp=new int[data.length]; g(Dr/D
mergeSort(data,temp,0,data.length-1); S LSbEm
} }HC6m{vH(
\vQjTM-7
private void mergeSort(int[] data, int[] temp, int l, int r) { v;m}<3@'
int i, j, k; tjIT4
int mid = (l + r) / 2; ="*:H)
if (l == r) ;)nV
return; ~xSAR;8
if ((mid - l) >= THRESHOLD) ollk {N
mergeSort(data, temp, l, mid); sq~9
l|F
else A:-r2;xB
insertSort(data, l, mid - l + 1); q!+&|F
if ((r - mid) > THRESHOLD) d5O_~xf&
mergeSort(data, temp, mid + 1, r); IxQ(g#sj_k
else gZLzE*NZ
insertSort(data, mid + 1, r - mid); 5o&noRIIr
gN("{j1Q
for (i = l; i <= mid; i++) { @ZUrr_|
temp = data; 6*]g~)7`Q~
} 50l!f7
for (j = 1; j <= r - mid; j++) { ,-GkP>8f(
temp[r - j + 1] = data[j + mid]; Ja@zeD)f"
} wQV[ZfU^h
int a = temp[l]; CMI V"-
int b = temp[r]; ~7}aW#
for (i = l, j = r, k = l; k <= r; k++) { bXw!fYm&
if (a < b) { [~[)C]-=
data[k] = temp[i++];
RZg8y+jM
a = temp; 5!pof\/a
} else { NEb M>1>^
data[k] = temp[j--]; ZFNn(n
b = temp[j]; ^UEExjf
} c'8pTP%[
} c4'k-\JvT
} jLZ^EM-
{r,MRZaa
/** !lk
-MN.
* @param data :4V8Iz 71
* @param l ".Q``d&X
* @param i bI_T\Eft
*/ +KzbaBK
private void insertSort(int[] data, int start, int len) { qP}187Q1
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ev}ugRxt|k
} (WISf}[l;
} z9B""ws
} x&kM /z?/
} ?{Rv/np=F
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堆排序: CC8)yO
-xXz}2S4
package org.rut.util.algorithm.support; :47bf<w|Y
5@kNvi
import org.rut.util.algorithm.SortUtil; <V~B8C!)
~7$4w# of0
/** _,?<r&>v6
* @author treeroot KT>eE
* @since 2006-2-2 oN\IQ7oI
* @version 1.0 \pVmSac,
*/ Ww[Xqmg
public class HeapSort implements SortUtil.Sort{ q|}%6ztv-
Q^H8gsv
/* (non-Javadoc) (1pR=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m'b9 f6
*/ Sl!#!FGI
public void sort(int[] data) { ,Y\`n7Ww
MaxHeap h=new MaxHeap(); !d)Vr5x
h.init(data); w I7iE4\vz
for(int i=0;i h.remove(); 26&$vgO~:
System.arraycopy(h.queue,1,data,0,data.length); oE
H""Bd
} 9[5qN!P;y
[@&0@/s*t'
private static class MaxHeap{ U_8 Z&
fVXZfq6
void init(int[] data){ 6`
8H k;
this.queue=new int[data.length+1]; bl8EzO
for(int i=0;i queue[++size]=data; FkH HTO
fixUp(size); =,])xzG%
} Biva{'[m
} RI[=N:C^
#aeKK7[
private int size=0; `Nnaw+<]
=1vl-*uYh
private int[] queue; Nf!g1D"U
EDA%qNd]j
public int get() { S#{jyU9 ]
return queue[1]; KmYSYNr@,
} v/m} {&K
R_7[7/a
public void remove() { wi gs1
SortUtil.swap(queue,1,size--); jGSY$nt9
fixDown(1); S <RbC
} n?[JPG2X
file://fixdown i0TbsoKh:
private void fixDown(int k) { (\8~W*ej"
int j; RXD*;B$v
while ((j = k << 1) <= size) { X>la!}sV
if (j < size %26amp;%26amp; queue[j] j++; UD!-.I]
if (queue[k]>queue[j]) file://不用交换 dKk#j@[n"
break; H:k?#7D(
SortUtil.swap(queue,j,k); yZ:AJNb
k = j; i!a.6Gq
} )/y7Fh
} 3OlXi9>3
private void fixUp(int k) { z]%c6ty
while (k > 1) { 0aRHXc2<
int j = k >> 1; 'nMj<:0wlD
if (queue[j]>queue[k]) &}y?Lt
break; #hZ`r5GvTj
SortUtil.swap(queue,j,k); q^ w@l
k = j; P2!+ZJ&
} 28!
ke
} "M!]t,?S
f'oO/0lx
} sOyL
^cnTZzT#Q
} V"Sa9P{y"
:u9OD` D
SortUtil: euyd(y$'k
j6: jN-z
package org.rut.util.algorithm; =`KA@~XH4
;xl0J*r
import org.rut.util.algorithm.support.BubbleSort; \V_Tc`
import org.rut.util.algorithm.support.HeapSort; hjgB[
&U>
import org.rut.util.algorithm.support.ImprovedMergeSort;
W<@9ndvH
import org.rut.util.algorithm.support.ImprovedQuickSort; +Zg@X.z
import org.rut.util.algorithm.support.InsertSort; DP8%/CV!*
import org.rut.util.algorithm.support.MergeSort; lS96Z3k"SB
import org.rut.util.algorithm.support.QuickSort; Due@'
import org.rut.util.algorithm.support.SelectionSort; }1#prQ0F
import org.rut.util.algorithm.support.ShellSort; YZk.{#^ c
XkhGU?={
/** =G9I7Y@
* @author treeroot rk-GQ#SKU
* @since 2006-2-2 fpa~~E-
* @version 1.0 :OFs"bC
*/ PWBcK_4i%
public class SortUtil { KDS}"/
public final static int INSERT = 1; KjNA PfL
public final static int BUBBLE = 2; /os,s[w
public final static int SELECTION = 3; }3}H}
public final static int SHELL = 4; aJ"m`5]=%
public final static int QUICK = 5; *N&~Uq^
public final static int IMPROVED_QUICK = 6; % aqP{mOO
public final static int MERGE = 7; &"?S0S>r!
public final static int IMPROVED_MERGE = 8; bgYUsc*uR
public final static int HEAP = 9; NXCvS0/h
='t}d>l
public static void sort(int[] data) { %XBMi~
sort(data, IMPROVED_QUICK); Nl'@Y^8N
} Lb,wn{
private static String[] name={ d.0K~M
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z0[d;m*
}; ]Zz.n5c
ueyQ&+6r
private static Sort[] impl=new Sort[]{ 2}n7f7[/b
new InsertSort(), )~ 0TGy|
new BubbleSort(), mKBO<l{S
new SelectionSort(), X`fb\}~R(
new ShellSort(), cN-$;Ent
new QuickSort(), jVPX]8
new ImprovedQuickSort(), c`@";+|r
new MergeSort(), PbnAY{J
new ImprovedMergeSort(), rS!M0Hq>t
new HeapSort() a*&(cn
}; q5G`q&O5
{e5DQ 21.
public static String toString(int algorithm){ iax0V
return name[algorithm-1]; bd\%K`JQ{
} s1]m^,
G}Ko*:fWS
public static void sort(int[] data, int algorithm) { ?C`r3
impl[algorithm-1].sort(data); *XOLuPL>6)
} X;1yQ|su
Ms#rvn!J
public static interface Sort { p ,.6sk
public void sort(int[] data); aJQzM
} ?<` ;lu/eL
9:*[Q"v
public static void swap(int[] data, int i, int j) { 6>]w1
H
int temp = data; ;0U*N &
f
data = data[j]; %P7qA
data[j] = temp; |\W53,n9
} |R2p^!m
} pm=m~