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。 <}lah%4F
插入排序: z-MQGqxR
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package org.rut.util.algorithm.support; 7G+!9^
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import org.rut.util.algorithm.SortUtil; ,a&,R*r@&
/** +(=-95qZ
* @author treeroot ZP~H!
* @since 2006-2-2 (d#&m+
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* @version 1.0 ry|a_3X(I
*/ XMS:F]HN
public class InsertSort implements SortUtil.Sort{ no8\Oees
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/* (non-Javadoc) z6)N![X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /wEl\Kx
*/ (eF[nfM
public void sort(int[] data) { }Hb0@
b_
int temp; HWV A5E[`Y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ogIu\kiZ
} EmaS/]X[
} -r,v3n
} Yeg<MrS4D
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} MB;rxUbhe3
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冒泡排序: |yz[mP*;o
FaCW +9B
package org.rut.util.algorithm.support; 8SU0q9X.
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import org.rut.util.algorithm.SortUtil; hrnE5=iY
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/** g$NUu
* @author treeroot kcUn GiP
* @since 2006-2-2 d;<'28A
* @version 1.0 h[u@UGK%
*/ Aa_@&e
public class BubbleSort implements SortUtil.Sort{ 6~sU[thGW
2 T} >9X
/* (non-Javadoc) 4!Radl3`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a>l,H#w*vW
*/ aAe`o2Xs
public void sort(int[] data) { x"sbm
int temp; J-/w{T8:
for(int i=0;i for(int j=data.length-1;j>i;j--){ pq
r_{
if(data[j] SortUtil.swap(data,j,j-1); ,vLQx\m{
} U\Y0v.11
} ~S<aIk0l
} ZxSnqbyA*
} Yr"Of*VNH
5 eL
b/,R
} ]&H"EHC<$
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选择排序: x2t&Wpvt
Q>Klkd5(
package org.rut.util.algorithm.support; bvJ@H
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import org.rut.util.algorithm.SortUtil; |pS]zD
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/** 1K#[Ef4
* @author treeroot |hj!NhBe
* @since 2006-2-2 "P?O1
* @version 1.0 Dqo#+_v
*/ \"$P :Uv
public class SelectionSort implements SortUtil.Sort { VqvjOeCbH
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/* '*L6@e#U
* (non-Javadoc) LI@BB:)[
* SF-E>s!XL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .]h/M,xg
*/ z/"*-+j
public void sort(int[] data) { ~b*]jZwT
int temp; _ f";zd
for (int i = 0; i < data.length; i++) { sQA_ 6]`
int lowIndex = i; 2DPv7\fW
for (int j = data.length - 1; j > i; j--) { {e|.AD
if (data[j] < data[lowIndex]) { 0sU*3 r?
lowIndex = j; TW>GYGz
} B(1-u!pz
} deaB_cjdI
SortUtil.swap(data,i,lowIndex); xE;O =mI
} L(C`<iE&3
} izcaWt3 a
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} Dq~;h \='
4 @{?4k-cq
Shell排序: Jn=;gtD-*
+'c+X^_
package org.rut.util.algorithm.support; q 0F6MAXj
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import org.rut.util.algorithm.SortUtil; 2`riI*fQ
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/** -->0e{y
* @author treeroot v]{UH{6
* @since 2006-2-2 CR'%=N04^
* @version 1.0 qJ`:$U
*/ {*B0lr`
public class ShellSort implements SortUtil.Sort{ 1Zn8CmE V
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/* (non-Javadoc) 3E*m.jX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Q"|%#P
*/ J6s]vV q"
public void sort(int[] data) { ~x8nC%qPvq
for(int i=data.length/2;i>2;i/=2){ 1b1Ab
zN
for(int j=0;j insertSort(data,j,i); 3<W%z]k@M
} ~C%I'z'
}
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insertSort(data,0,1); YS^!'IyG/B
} +`GtZnt#
wxvi)|)
/** 9r]|P}yuS
* @param data ujxr/8mjV
* @param j 4{F1GW
* @param i *p
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*/ 4{kH;~
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private void insertSort(int[] data, int start, int inc) { WuUwd#e
int temp; 5_'lu
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *"w hup[
} <v0`r2^S{-
} q5R|
^uf
} XJe=+_K9
;WSW&2
} `?Q
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快速排序: &kIeW;X
_F%`7j
package org.rut.util.algorithm.support; /dYv@OU?
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import org.rut.util.algorithm.SortUtil; tsc`u>
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/** d{4;qM#
* @author treeroot GHGyeqNM
* @since 2006-2-2 iwJ_~
* @version 1.0 2HFn\kjj.s
*/ *(Dmd$|0|
public class QuickSort implements SortUtil.Sort{ qazA,|L!
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/* (non-Javadoc) RHC ZP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~'_cBJ
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*/ ;yJ:W8U]+;
public void sort(int[] data) { o]oiJvOr
quickSort(data,0,data.length-1); 0M HiW=
} Ax=HDW}
private void quickSort(int[] data,int i,int j){ T-%=tY+-
int pivotIndex=(i+j)/2; tVn?cS
file://swap R7bG!1SHl
SortUtil.swap(data,pivotIndex,j); 2cYBm^o|x
i
6G40!G=)
int k=partition(data,i-1,j,data[j]); uatUo
SortUtil.swap(data,k,j); yU
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YV-7
if((k-i)>1) quickSort(data,i,k-1); C.jWT1
if((j-k)>1) quickSort(data,k+1,j); f,HUr% @
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`3[
} =hKAwk/^
/** rR.It,,
* @param data B'}?cG]
* @param i p)IL(_X)
* @param j y>a?<*Y+e
* @return y'_8b=*
*/ ^AP8T8v
private int partition(int[] data, int l, int r,int pivot) { X.t4;
do{ q?(]
Y*
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]1!" q40)]
SortUtil.swap(data,l,r); 3%Y:+%VE
} @z@%vr=vX
while(l SortUtil.swap(data,l,r); qE~_}4\Z9
return l; y+(\:;y$7
} k]@]a
+Y%6y]8
} y"q
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改进后的快速排序: "bo0O7InOV
o:@Q1+p
package org.rut.util.algorithm.support; {6'Xz
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import org.rut.util.algorithm.SortUtil; >pU9}2fpT
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/** !a@)6or
* @author treeroot [C "\]LiX
* @since 2006-2-2 w"^h<]b
* @version 1.0 9"P|Csj
*/ bx3Q$|M?
public class ImprovedQuickSort implements SortUtil.Sort { <gp?}Lk
I_J&>}V'
private static int MAX_STACK_SIZE=4096; [*',pG
private static int THRESHOLD=10; s6bsVAO>
/* (non-Javadoc) bHwEd%f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m^_=^z+
*/ kU<t~+
public void sort(int[] data) { l[}4
X/
int[] stack=new int[MAX_STACK_SIZE]; c2npma]DZ
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int top=-1; y}odTeq
int pivot; Zzlf1#26\
int pivotIndex,l,r; ~ nsb
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stack[++top]=0; $GJT
stack[++top]=data.length-1; "%-Vrb=:Y
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while(top>0){ <g[z jV9p
int j=stack[top--]; %nZl`<M
int i=stack[top--]; {a7~P0$
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pivotIndex=(i+j)/2; vi,hWz8WB
pivot=data[pivotIndex]; 7j]v_2S`
~e{ @ 5.g
SortUtil.swap(data,pivotIndex,j); 1 R5pf
`%C -7D'?
file://partition j_Szw
w-
l=i-1; NQ9v[gv
r=j; AcH-TIgM/
do{ H9cPtP~a)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @]=40Yj~w
SortUtil.swap(data,l,r); ks4`h>i
} L|=5jn9 :
while(l SortUtil.swap(data,l,r); jJ,_-ui
SortUtil.swap(data,l,j); 6Z2 ,:j;
7GgZ: $d
if((l-i)>THRESHOLD){ N^Re
stack[++top]=i; `AJ[g>py^|
stack[++top]=l-1; 8|a./%gixs
} 3A7774n=P
if((j-l)>THRESHOLD){ c3vb~l)
stack[++top]=l+1; 6%v9o?:~l
stack[++top]=j; Y=Vbs x
} /).{h'^Hq\
R?{+&r.X
} CKsVs.:u
file://new InsertSort().sort(data); -pC8 L<
insertSort(data); 7{;it uqX
} ?"B]"%M&
/** @YJI'Hf67
* @param data :D.0\.p
*/ =*mT{q@
private void insertSort(int[] data) { ~Z\:Nx
int temp; =6%oW2E\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j|eA*UE
} \(o"/*
} f-b],YE
} ,?fJ0n:!%
YDt+1Kw}D
} y>^a~}Zq
Cm}2 >eH
归并排序: OmYVJt_
V2MOD{Maat
package org.rut.util.algorithm.support; NTg@UT<
IrLGAQ0
import org.rut.util.algorithm.SortUtil; ($[wCHU`!
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/** -fR:W{u
* @author treeroot >| R'dF}
* @since 2006-2-2 Wa_qD
* @version 1.0 4=zs&
*/ ._mep\#.:
public class MergeSort implements SortUtil.Sort{ U.%Kt,qB
yIMqQSt79z
/* (non-Javadoc) .HqFdsm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2eT?qCxqc
*/ K1B9t{T
public void sort(int[] data) { MmuT~d/
int[] temp=new int[data.length]; ^J!q>KJs
mergeSort(data,temp,0,data.length-1); bx@l6bpQ
} V~J5x >O
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private void mergeSort(int[] data,int[] temp,int l,int r){ 0#q=-M/?`
int mid=(l+r)/2; VtreOJ+
if(l==r) return ; x%{]'z
mergeSort(data,temp,l,mid); Vz{+3vfra6
mergeSort(data,temp,mid+1,r); ?6#won
for(int i=l;i<=r;i++){ :6^7l/p
temp=data; sp9gz~Kq
} J=4>zQLW
int i1=l; UM}u(;oo%)
int i2=mid+1; $vO&C6m$
for(int cur=l;cur<=r;cur++){ O] _4pP
if(i1==mid+1) 7nZPh3%
data[cur]=temp[i2++]; G#M)5'Q]U
else if(i2>r) C0rf
data[cur]=temp[i1++]; !40>LpL[
else if(temp[i1] data[cur]=temp[i1++]; !3ggQG!e
else d[ N1zQW
data[cur]=temp[i2++]; ~%TWF+
} gEA SYIQ
} \bA Yic
Z:;}
} C@rGa7
R%E7 |NAG
改进后的归并排序: bS.w<V
Ew
DSGcxM+
package org.rut.util.algorithm.support; YIU3}sJ!
d_RgKdR )k
import org.rut.util.algorithm.SortUtil; >t D=t8
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/** IgT`on3Y
* @author treeroot &4#Zi.]
* @since 2006-2-2 bp1AN9~
* @version 1.0 .8hI
ad
*/ 2hE(h
public class ImprovedMergeSort implements SortUtil.Sort { Ia&R/I
1I+9?fa
private static final int THRESHOLD = 10; 2|1fb-AR
&hCbXs=
/* '6KvB
* (non-Javadoc) <N<Q9}`V
* +Y\:Q<eMFg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I7f ^2
*/ f)I5=Ijy(
public void sort(int[] data) { tF2"IP.
int[] temp=new int[data.length]; c/{FDN
mergeSort(data,temp,0,data.length-1); ,Z.sGv
} BHXi g~d
6CJMQi,kn
private void mergeSort(int[] data, int[] temp, int l, int r) { 8;PkuJR_]
int i, j, k; yNTd_XPL
int mid = (l + r) / 2; DE?v'7cmA
if (l == r) &W `xZyb3
return; UZZJtQt
if ((mid - l) >= THRESHOLD) 9KSi-2?H
mergeSort(data, temp, l, mid); _IH" SVub
else rg/{5f
insertSort(data, l, mid - l + 1); DwD$T%kF
if ((r - mid) > THRESHOLD) b7Y g~Lw
mergeSort(data, temp, mid + 1, r); 74s{b]jN'-
else |<%!9Z
insertSort(data, mid + 1, r - mid); KKeMi@N
%!|w(Povq
for (i = l; i <= mid; i++) { }d$-:l,w
temp = data; L`NIYH<^
} JAbUK[:K
for (j = 1; j <= r - mid; j++) { BD g]M/{
temp[r - j + 1] = data[j + mid]; <@<rU:o=V
} J[ds.~ $
int a = temp[l]; gN&i&%*!
int b = temp[r]; V\~.
for (i = l, j = r, k = l; k <= r; k++) { 5dBftTv?
if (a < b) { %36x'Dn?
data[k] = temp[i++]; }xZi Ct
a = temp; &&ioGy}1
} else { %pWn9
data[k] = temp[j--]; 6iC>CY3CG
b = temp[j]; bbm\y] !t
} dZM^?rq
} oy+|:[v:Fk
}
+2uSMr
qA*~B'
/** F_-Lu]*
* @param data j!;LN)s@?
* @param l W{p}N
* @param i <,d550GSm
*/ 37AVk`a
private void insertSort(int[] data, int start, int len) { 5>532X(0
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); j;x()iZ<
} ez4!5&TzRm
} *MF9_V)8V
} J0G@]H
} "> uN={Iy
Aoa8Q
E
堆排序: H`EhsYYK
gY}In+S
package org.rut.util.algorithm.support; Hxu5Dx5![
>A#5` $i
import org.rut.util.algorithm.SortUtil; _0/unJl`
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/** k.@![w\ea
* @author treeroot Z9{~t
* @since 2006-2-2 Hq@+m!
* @version 1.0 !oLn=
*/ sJHVnMA
public class HeapSort implements SortUtil.Sort{ ;m/e|_4;y
nF3}wCe)
/* (non-Javadoc) &|>@K#V8-;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &(F
c .3m
*/ g` rr3jP
public void sort(int[] data) { =]5tYIU
MaxHeap h=new MaxHeap(); T:}Q3
h.init(data); ~o}:!y
for(int i=0;i h.remove(); PK\Z Rl
System.arraycopy(h.queue,1,data,0,data.length); n.%QWhUB
} >KKWhJ
q?,PFvs"
private static class MaxHeap{ 3i^X9[.
F%>$WN#2
void init(int[] data){ C=D*
this.queue=new int[data.length+1]; 1ni+)p>]
for(int i=0;i queue[++size]=data; XcR=4q|7
fixUp(size); WP<L9A
} N['DqS =
} 1v@#b@NXM7
W/'1ftn?D
private int size=0; 0cG'37[
bWPsfUn#
private int[] queue; z4u.bU
]HKt7 %,
public int get() { jP@ @<dt
return queue[1]; {QG.> lB
} a`O'ZY
.jrNi=BP*
public void remove() { .#EU@Hc
SortUtil.swap(queue,1,size--); h*w9{[L
fixDown(1); w[~G^x&
} m^X51,+<
file://fixdown )g5?5f;
private void fixDown(int k) { OVK
)]- ~
int j; 84ij4ZYe
while ((j = k << 1) <= size) { tBo\R?YRs
if (j < size %26amp;%26amp; queue[j] j++; An2>]\L
if (queue[k]>queue[j]) file://不用交换 Kda'N$|`
break; mc{z
SortUtil.swap(queue,j,k); !Ko2yn}6l
k = j; 3(YvqPp&
} qs4jUm
} r@G*Fx8Z
private void fixUp(int k) { *ug~LK5Y.
while (k > 1) { \w9}O2lL
int j = k >> 1; Tigw+2
if (queue[j]>queue[k]) 6St=r)_
break; |Xt G9A>
SortUtil.swap(queue,j,k); xAmtm"
k = j; S^O9}<2g
} !'f7;%7s
} q4ROuE|d
@ @[xTyA
} Nt>^2Mv
fit{n]g
} EJ:O 1
{Jn0G;
SortUtil: 3%v)!dTa<^
*l5?_tF
package org.rut.util.algorithm; #W\}v(Ke
;i@S}LwL
import org.rut.util.algorithm.support.BubbleSort; Yf0 KG
import org.rut.util.algorithm.support.HeapSort; =VC18yA
import org.rut.util.algorithm.support.ImprovedMergeSort; I}f`iBG
import org.rut.util.algorithm.support.ImprovedQuickSort; @SfQbM##%
import org.rut.util.algorithm.support.InsertSort; IDct!53~
import org.rut.util.algorithm.support.MergeSort; k
9i
W1
import org.rut.util.algorithm.support.QuickSort; :EX>Y<`]
import org.rut.util.algorithm.support.SelectionSort; fWHvVyQ.
import org.rut.util.algorithm.support.ShellSort; 4v[y^P
ZTmy} @l
/** s'HsLe0|
* @author treeroot 2 6#p,P
* @since 2006-2-2 y3~=8!Tj?Q
* @version 1.0 b6k`R4S3
*/ o78u>O y
public class SortUtil { sn"((BsO<
public final static int INSERT = 1; Ny^ 1#R
public final static int BUBBLE = 2; jY6GWsh:9
public final static int SELECTION = 3; %QP[/5vQ
public final static int SHELL = 4; *_D/_Rp7
public final static int QUICK = 5; N{J
1C6
public final static int IMPROVED_QUICK = 6; 0O3O^
0
public final static int MERGE = 7; XgxE M1(
public final static int IMPROVED_MERGE = 8; 2w|5SK_
public final static int HEAP = 9; gL<n?FG4b
qu B[S)2}
public static void sort(int[] data) { 5 -i,Tx&:
sort(data, IMPROVED_QUICK); !h?HfpYv
} ~J\qkQ
private static String[] name={ vF\>;pcT
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N+&uR!:.C
}; >u=
"FHJ_$!
private static Sort[] impl=new Sort[]{ Q,?_;,I}
new InsertSort(), xG!~TQ
new BubbleSort(), ^ ` LqNG
new SelectionSort(), P2n8H Fi
new ShellSort(), cSL6V2F
new QuickSort(), *\ii+f-
new ImprovedQuickSort(), I`_2Q:r
new MergeSort(), (%_X{R'
new ImprovedMergeSort(), l";Yw]:^
new HeapSort()
f' A$':Y
};
fHiL%]z
ElO|6kOBYG
public static String toString(int algorithm){ ?G `m;S
return name[algorithm-1]; _E'?U
} CL0lMZ
-A#p22D,5
public static void sort(int[] data, int algorithm) { kcS7)"/ zC
impl[algorithm-1].sort(data); i1evB9FZ1z
} $J1`.Q>)4
rHKO13WF
public static interface Sort { ^ZMbJe%L
public void sort(int[] data); O Z
./suR)
} $RDlM
IuY9Q8
public static void swap(int[] data, int i, int j) { |WB-N g
int temp = data; ixA.b#!1
data = data[j]; 8N&'n
data[j] = temp; oAO{4xP
} XG|N$~N+ 2
} |d0ZB_ci