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。 #6y fIvap
插入排序: {>64-bU
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package org.rut.util.algorithm.support; i+Ne.h
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import org.rut.util.algorithm.SortUtil; W#d'SL#5
/** [vBP,_Tjx
* @author treeroot zB7^L^Y
* @since 2006-2-2 u ?F},VL;
* @version 1.0 ~yngH0S$[b
*/ dqU)(T=C
public class InsertSort implements SortUtil.Sort{ -'oxenu
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/* (non-Javadoc) =JTwH>fD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a~VW?wq
*/ <vs*aFq
public void sort(int[] data) { S"+#=C
int temp; j$u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N>s3tGh
} \(?d2$0m
} \ z*<^ONq
} 0jXDjk5'<
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} 4
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冒泡排序: ,
P1m#
J| 46i
package org.rut.util.algorithm.support; DDT]A<WUV
lS2`#l >
import org.rut.util.algorithm.SortUtil; `LwZ(M-hI
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N
/** CJ3/8*;w
* @author treeroot dn%'bt
* @since 2006-2-2 RXWdqaENx
* @version 1.0 KI\
9)
*/ a*,V\l|6
public class BubbleSort implements SortUtil.Sort{ 2*-qEUl1
ncsk(`lo
/* (non-Javadoc) 0|\JbM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1?TgI0HS
*/ qIy9{LF
public void sort(int[] data) { Vn^8nS
int temp; O" [#g
for(int i=0;i for(int j=data.length-1;j>i;j--){ `]&'yt
if(data[j] SortUtil.swap(data,j,j-1); "|WKK}
} d.>O`.Mu)}
} 8M['-
} pXNH
} aO:A pOAO
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} :W'.SRD
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选择排序: 5 "x1Pln
obX2/
package org.rut.util.algorithm.support; ZE/Aj/7Qy
Ox aS<vQ3
import org.rut.util.algorithm.SortUtil; ? a?]
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/** cnDBT3$~Z
* @author treeroot 'F1<m^
* @since 2006-2-2 nrTCq~LO(
* @version 1.0 2Y}A9Veb
*/ esv<b>`R
public class SelectionSort implements SortUtil.Sort { 4%>tk 8 [
5B{Eg?
/* ,+5!1>\
* (non-Javadoc) &4p~i Z
* ?G5,x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gF M~M(
*/ >ZAn2s
public void sort(int[] data) { '
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int temp; T !pHT'J
for (int i = 0; i < data.length; i++) { M%eTNsbNm
int lowIndex = i; lzz68cT
for (int j = data.length - 1; j > i; j--) { =*WfS^O
if (data[j] < data[lowIndex]) { [}l
1`>
lowIndex = j; ?zXlLud8
} rqM_#[Y?
} ${UH!n{
SortUtil.swap(data,i,lowIndex); /jU4mPb;\D
} - :x6X$=
} I\82_t8
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} ?l
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Shell排序: cl'qw##
zL+M-2hV
package org.rut.util.algorithm.support; yA<\?Ps
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import org.rut.util.algorithm.SortUtil; 7YU}-gi
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/** 1i|5ii*vc
* @author treeroot U&gl$/4U@
* @since 2006-2-2 |uA /72
* @version 1.0 {'zs4)vw
*/ pmDFmES
public class ShellSort implements SortUtil.Sort{ $I3}%'`+
}Do$oyAV$G
/* (non-Javadoc) IkLcL8P^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E-#}.}i5
*/ a&`Lfw"
public void sort(int[] data) { LkJ-M=y
for(int i=data.length/2;i>2;i/=2){ )}\J
for(int j=0;j insertSort(data,j,i); i~*#z&4A+
} z0tm3ovp
} {,o 0N\(
insertSort(data,0,1); Kx,<-]4
} RM`iOV,Y
*i7|~q/u
/** K&iU+
* @param data R?kyJ4S
* @param j :LR>U;2
* @param i )G|'PXI@,
*/ @(e/Y/
private void insertSort(int[] data, int start, int inc) { TP)}1@
int temp; lLL) S
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); yKOC1( ~
} flU?6\_UC
} wb-_CQ
} Mg{=(No
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} zAd%dbU|
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快速排序: sMWNzt
y)+lU
package org.rut.util.algorithm.support; h!]=)7x;
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import org.rut.util.algorithm.SortUtil; $%3%&+z$I
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/** (,
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* @author treeroot Md1ePp]
* @since 2006-2-2 a"X9cU[
* @version 1.0 BP0*`TY
*/ ]KRw[}z
public class QuickSort implements SortUtil.Sort{ /:aY)0F0<&
YZ^;xV
/* (non-Javadoc) HY7#z2L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 32,Y3!%
*/ p#AQXIF0
public void sort(int[] data) { 10e~Yc
quickSort(data,0,data.length-1); eq$.np
} |Skhx9};
private void quickSort(int[] data,int i,int j){ kG3m1: :
int pivotIndex=(i+j)/2; B["C~aF
file://swap 2G BE=T
SortUtil.swap(data,pivotIndex,j); X?OH//co
.0'FW!;FV
int k=partition(data,i-1,j,data[j]); &^^V*O
SortUtil.swap(data,k,j); 'C<4{agS
if((k-i)>1) quickSort(data,i,k-1); XlU`jv+
if((j-k)>1) quickSort(data,k+1,j); Meo.
V|1
96S#Q*6+R
} S/7?6y~
/** QNgfvy
* @param data 4Yya+[RY
* @param i }:hN}*H
* @param j /}$D&KwYg
* @return 7y'2
*/ PFPZ]XI%F
private int partition(int[] data, int l, int r,int pivot) { J`d;I#R%c
do{ 5Z*6,P0
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); % (x9~"
SortUtil.swap(data,l,r); YS+|n%?
} yk&PJ;%O<
while(l SortUtil.swap(data,l,r); ppK`7J>Z
return l; v<tr1cUT
} K)F6TvWv
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} 4b:q84
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改进后的快速排序: ZA6)@Mn
2N[/Cc2Tg/
package org.rut.util.algorithm.support; q2~@z-q)b
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import org.rut.util.algorithm.SortUtil; ($r-&]y
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/** m>ApN@n
* @author treeroot gX!-s*{E
* @since 2006-2-2 %oHK=],|1
* @version 1.0 `0Bk@B[>
*/ yw+LT,AQ.
public class ImprovedQuickSort implements SortUtil.Sort { )>U7+ Me
MC;2.e`
private static int MAX_STACK_SIZE=4096; h@yn0CU3.
private static int THRESHOLD=10; :pvJpu$]
/* (non-Javadoc) B0|!s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }GL@?kAGR5
*/ zX}t1:nc
public void sort(int[] data) { h3t);}Y}D9
int[] stack=new int[MAX_STACK_SIZE]; rki0! P`
}*s`R;B|,
int top=-1; ![9umsx
int pivot; EohvP[i
int pivotIndex,l,r; ?]PE!7H
b ]u01T-
stack[++top]=0; %+HZ4M+hV
stack[++top]=data.length-1;
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while(top>0){ XsbYWJdds
int j=stack[top--];
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int i=stack[top--]; :.aMhyh#*
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pivotIndex=(i+j)/2; ;Bwg'ThT
pivot=data[pivotIndex];
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(rm*KD"]
SortUtil.swap(data,pivotIndex,j); Yh2[
nF_
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file://partition ! N'HL-oT
l=i-1; |Q?^B a
r=j; XDohfa_
do{ N`et]'_A}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ce:p*
SortUtil.swap(data,l,r); "kd)dy95H
} " `FcW
while(l SortUtil.swap(data,l,r); zy(NJ
SortUtil.swap(data,l,j); x7ZaI{
B"?ivxM:U
if((l-i)>THRESHOLD){ #.j}:
stack[++top]=i; T: I34E[
stack[++top]=l-1; bYAtUEv
} .W
s\%S
if((j-l)>THRESHOLD){ 1s/548wu
stack[++top]=l+1; 6W[~@~D=
stack[++top]=j; %8{nuq+c
} wl7 (|\-
RG_.0'5=hc
} @8*lqV2
file://new InsertSort().sort(data); y4)iL?!J~
insertSort(data); M>[e1y>7
} z"P/Geb:O
/** `3yK<-
* @param data Z@,[a
*/ d$hBgJe>N
private void insertSort(int[] data) { QtQbr*q@%
int temp; =}zSj64
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OXJ'-EZH
} 0p]v#z}
} @2g
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} hjD%=Ri0Z
gVNoC-n)
} F.),|t$\
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归并排序: }`.d4mm
&EmG\vfE
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; 8W Etm}
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/** -}3nIk<N
* @author treeroot Vh{(*p
* @since 2006-2-2 Z@(KZ|
* @version 1.0 g%<n9AUl
*/ ]f_`w81[
public class MergeSort implements SortUtil.Sort{ h0$Y;=YA
6EeO\Qj{
/* (non-Javadoc) eG7Yyz+t$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9l(T>B2a
*/ vUCmm<y
public void sort(int[] data) { ;5DDV6
int[] temp=new int[data.length]; \PWH(E9
mergeSort(data,temp,0,data.length-1); ;y_ ]w6|n
} S5V:H Rj{?
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private void mergeSort(int[] data,int[] temp,int l,int r){ %=!] 1
int mid=(l+r)/2; u'nQC*iJb
if(l==r) return ; hd6O+i
Y4
mergeSort(data,temp,l,mid); ?lML+
mergeSort(data,temp,mid+1,r); %&S9~E
D
for(int i=l;i<=r;i++){ 2VzYP~Jg
temp=data; 2+_a<5l~
} ,l Y4WO
int i1=l; Xv3pKf-K
int i2=mid+1; TJ1h[
for(int cur=l;cur<=r;cur++){ Wy%FF\D.Y
if(i1==mid+1) >n^780S|
data[cur]=temp[i2++]; U*b7 Pxq;
else if(i2>r) zz
/4 ()u
data[cur]=temp[i1++]; 3)yL#hXg)
else if(temp[i1] data[cur]=temp[i1++]; xHMFYt+0$G
else |kP utB
data[cur]=temp[i2++]; u"4B5D
} Evd|_ W-
} cPv(VjS1;
axpZ`BUc
} 3~VV2O
bF6J>&]!
改进后的归并排序: uFhaN\S
)U=]HpuzI
package org.rut.util.algorithm.support; sM+~x<}0
Vd(n2JMtG
import org.rut.util.algorithm.SortUtil;
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#*:^\z_Jd
/** $xWUzg1<U
* @author treeroot Qe{w)e0}`
* @since 2006-2-2 `XpQR=IOMb
* @version 1.0 z$WLx
*/ X8">DR&>Y
public class ImprovedMergeSort implements SortUtil.Sort { u~aRFQ:
Qz3Z_V4k9
private static final int THRESHOLD = 10; 5C&*PJ~WA
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/* SiUu**zC
* (non-Javadoc) yOt#6Vw
* 1[T7;i$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [q_+s
*/ UKQ"sC
public void sort(int[] data) { 4(8trD6
int[] temp=new int[data.length]; Px&_6}YWy
mergeSort(data,temp,0,data.length-1); 1I{8 |
} "i\#L`TkzX
VX&PkGi?o
private void mergeSort(int[] data, int[] temp, int l, int r) { ;0Pv49q
int i, j, k; nQoQNB
int mid = (l + r) / 2; N-]/MB8
if (l == r) |/vJ+aKq
return; <l$ d>,
if ((mid - l) >= THRESHOLD) X.#)CB0c1Q
mergeSort(data, temp, l, mid); P6R_W
else ,|B-Nq
insertSort(data, l, mid - l + 1); H#DvCw
if ((r - mid) > THRESHOLD) RQb}t,
mergeSort(data, temp, mid + 1, r); @1Q-.54a
else Pal=I)
insertSort(data, mid + 1, r - mid); OU"%,&J
fj))Hnt(|
for (i = l; i <= mid; i++) { i5t6$|u:&m
temp = data; ~y2zl
} -X~mW
for (j = 1; j <= r - mid; j++) { Cf3!Ud
temp[r - j + 1] = data[j + mid]; ?UZt30|1
} ?)y^ [9
int a = temp[l]; +)iMJ]>
int b = temp[r]; (rd
[tc
for (i = l, j = r, k = l; k <= r; k++) { Ca
PHF@6WN
if (a < b) { weSq|f
data[k] = temp[i++]; kB> ~Tb0
a = temp; X
3$ W60Q
} else { >
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data[k] = temp[j--]; 6e B;
b = temp[j]; n+Kv^Y`qxO
} -g]Rs!w'
} L"NHr~
} m&Mupl
+ti ?7|bK<
/** j
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* @param data [YfoQ1
* @param l N);w~)MYh
* @param i wOl?(w=|
*/ ||_hET
private void insertSort(int[] data, int start, int len) { m|;(0
rft
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -juG[zn
} uv27Vos
} YR9fw
} A913*O:\
} {K]5[bMT
{O^u^a\m
堆排序: kkF)Tro\
]:59c{O
package org.rut.util.algorithm.support; ^ RA'E@"
rNii,_
import org.rut.util.algorithm.SortUtil; FM >ae-L-
[d6!
/** 6!ve6ZB[p
* @author treeroot K Lg1(W(
* @since 2006-2-2 3}0\W.jH
* @version 1.0 6'r8.~O
*/ DPTk5o[
public class HeapSort implements SortUtil.Sort{ .$%p0Yx+
,erf{"Nh
/* (non-Javadoc) s9;6&{@%wO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $(aq;DR
*/ (Q^sK\
public void sort(int[] data) { 0N.h: 21(4
MaxHeap h=new MaxHeap(); ej`%}e%2
h.init(data); MC}t8L=
for(int i=0;i h.remove(); XH"+oW
System.arraycopy(h.queue,1,data,0,data.length); /x6p
} 5^u$zfR
CWn\KR
private static class MaxHeap{ vxOqo)yO
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void init(int[] data){ (+>
2&@@<
this.queue=new int[data.length+1]; 3'0Pl8
for(int i=0;i queue[++size]=data; d(T4Kd$r
fixUp(size); {r,Uik-nL
} wA=r]BT
} N{;!xIv
;sZG=y@
private int size=0; s[yWBew
Cbw *?9d
private int[] queue; &AQqI
fu/8r%:h
public int get() { hmO2s/~
return queue[1]; q@|+`>h
} C82_)@96
`@~e<s`j
public void remove() { Y'iX
SortUtil.swap(queue,1,size--); ~t`^|cr|
fixDown(1); XA>W>|
} M&Ka^h;N
file://fixdown LVj1NP
private void fixDown(int k) { 2$JGhgDI
int j; 4G c
M
while ((j = k << 1) <= size) { #z*,CU#S9d
if (j < size %26amp;%26amp; queue[j] j++; H_DCdUgC'
if (queue[k]>queue[j]) file://不用交换 n~N>;mP
break; ]gk1q{Ql<
SortUtil.swap(queue,j,k); ze+YQF
k = j; RP4/:sO
} yB b%#GW
} uJ!&T
private void fixUp(int k) { Ms{";qiG
while (k > 1) { (vs<Fo|]
int j = k >> 1; *'<AwG&
if (queue[j]>queue[k]) 5)k8(kH
break; uN|A}/hr]
SortUtil.swap(queue,j,k); `g)}jo`W
k = j; Bt+^H6cb
} $)i`!7`4=
} c/;;zc
oL<#9)+2*
} )ZG;.j
3o<d=@`r
} )dXa:h0RZ
^X=Q{nB
SortUtil: y+k_&ss
!#tVQ2O
package org.rut.util.algorithm; &`"DG$N(
$*yYmF
import org.rut.util.algorithm.support.BubbleSort; *]6g-E?:@
import org.rut.util.algorithm.support.HeapSort; o.+;]i}D
import org.rut.util.algorithm.support.ImprovedMergeSort; Dp@XAyiA[
import org.rut.util.algorithm.support.ImprovedQuickSort; ^9g$/8[^c_
import org.rut.util.algorithm.support.InsertSort; z;c>Q\Q
import org.rut.util.algorithm.support.MergeSort; b$ G{^
import org.rut.util.algorithm.support.QuickSort;
FaL\6w
import org.rut.util.algorithm.support.SelectionSort; 1^~&"s U
import org.rut.util.algorithm.support.ShellSort; bjZJP\6
067c/c
/** _Cmmx`ln
* @author treeroot "[ bkdL<
* @since 2006-2-2 +#}GmUwPG$
* @version 1.0 DJP6Z
*/ i]JTKL{\q
public class SortUtil { M&Uy42,MR
public final static int INSERT = 1; Njq}M/{U
public final static int BUBBLE = 2; ]-=L7a
public final static int SELECTION = 3; =$>=EBH,cm
public final static int SHELL = 4; ]g_VPx"
public final static int QUICK = 5; 4ot<Uw5
public final static int IMPROVED_QUICK = 6;
TBj 2(Z
public final static int MERGE = 7; LU1I
`E
public final static int IMPROVED_MERGE = 8; Y0LZbT3
public final static int HEAP = 9; IkrB}
Y-VDi.]W
public static void sort(int[] data) { ]z'&oz
sort(data, IMPROVED_QUICK); =~D? K9o
} 3uL
f0D
private static String[] name={ qt"D!S_
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" dbp\tWaW
}; :6n#y-9^1
o+A7hBM^
private static Sort[] impl=new Sort[]{ mw@Pl\=
new InsertSort(), +C(-f
new BubbleSort(), H4$qM_N
new SelectionSort(), 'o AmA=
new ShellSort(), GABZsdFZ!
new QuickSort(), xL}i9ozZ
new ImprovedQuickSort(), w^yb`\$
new MergeSort(), l45/$G7
new ImprovedMergeSort(), LUOjaX
new HeapSort() JGs:RD'
}; --yF%tRMP
h\s/rZg=r
public static String toString(int algorithm){ 2g.lb&3W
return name[algorithm-1]; EX8JlA\-W
} )M0YX?5AR
r`H}f#.KR
public static void sort(int[] data, int algorithm) { agIqca;
impl[algorithm-1].sort(data); DUp`zW;B
} wk(25(1q
8-Abg:)
public static interface Sort { |/Nh#
public void sort(int[] data); 18&"j 8'm
} eYOY
z.vQ1~s
public static void swap(int[] data, int i, int j) { C @(@n!o:!
int temp = data; x|H`%Z
data = data[j]; !_QI<=X
data[j] = temp; 7!O"k#
} mdi!Q1pS
} {u'szO}k