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。 13/,^?
插入排序: 9ns( F:
wsB-(
0-
package org.rut.util.algorithm.support; {l$)X
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import org.rut.util.algorithm.SortUtil; Sy <E@1
/** ty['yV-;a
* @author treeroot h SS9mQ
* @since 2006-2-2 =<H ekiYM
* @version 1.0 +BtLd+)R
*/ <tbs,lcw;
public class InsertSort implements SortUtil.Sort{ 6Zn[l,\
:j3'+%'2
/* (non-Javadoc) ;W5.g8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }w35fG^
*/ P?>:YY53
public void sort(int[] data) { Hif|z[0$
int temp; (Ud"+a
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PU.j(0
} A]0R?N9wb_
} H4
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} v1yB
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} `;}qjm0a
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冒泡排序: Zc_F"KJL
vo
}4N[]Sb
package org.rut.util.algorithm.support; Kn$E{ F\
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import org.rut.util.algorithm.SortUtil; P??P"^hU
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/** .$cX:"_Mk
* @author treeroot ""
^n^$
* @since 2006-2-2 /7Sg/d%c
* @version 1.0 "6%{#TZ
*/ wS|k3^OV%
public class BubbleSort implements SortUtil.Sort{ N~v<8vJq`
l^bak]9 1
/* (non-Javadoc) Pl'lmUR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E.m2- P;4
*/ >wqWIw.w>
public void sort(int[] data) { >V)#y$Z
int temp; apJXRH`
for(int i=0;i for(int j=data.length-1;j>i;j--){ \Kui`X
if(data[j] SortUtil.swap(data,j,j-1); nnRb
} YR\(*LJL
} [AFR \{
} 63\
CE_p
} 3+'vNc
Bj6%mI42hl
} fI;nVRfp
aj1g9y
选择排序: "kcix!}&
[Y`E"1f2
package org.rut.util.algorithm.support; ]Gm4gd`
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nR3E
import org.rut.util.algorithm.SortUtil; ~5|R`%
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/** s~(`~Y4
* @author treeroot )Az0.}
* @since 2006-2-2 ImB5F'HI$
* @version 1.0 ^"lEa-g&
*/ ^2BiMH3j
public class SelectionSort implements SortUtil.Sort { Q$p3cepsK
;8MQ'#
/* M*T!nwb
* (non-Javadoc) :_HdOm
* au=@]n#<(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W^HE1Dt]
*/ 6X'0 T}
public void sort(int[] data) { n|H8O3@
int temp; Y#9bM$x7
for (int i = 0; i < data.length; i++) {
N6BOUU]
int lowIndex = i; WS4DzuZZ
for (int j = data.length - 1; j > i; j--) { W+GBSl
if (data[j] < data[lowIndex]) { (0y!{ (a
lowIndex = j; D5Rp<PBq,
} $rQ7"w J
} } @3q;u )
SortUtil.swap(data,i,lowIndex); D{d%*hlI 3
} t&JOASYC
} &%(Dd
`N}Vi6FG
} O`_, _
)j}#6r
Shell排序: mIrN~)C4\
FnOahLS
package org.rut.util.algorithm.support; #d<"Ub
1\lZ&KX$i
import org.rut.util.algorithm.SortUtil; <ir]bQT
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/** %'. x vC
* @author treeroot NuF?:L[
* @since 2006-2-2 7nxH>.,Q>
* @version 1.0 h4ntjk|{i7
*/ p/LV^TQ
public class ShellSort implements SortUtil.Sort{ \AI-x$5R*
7$0bgWi
/* (non-Javadoc) VL"Cxs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =_N$0
*/ !w/fwOo
public void sort(int[] data) { u!+;Iy7
for(int i=data.length/2;i>2;i/=2){ o)b-fAd@$
for(int j=0;j insertSort(data,j,i); `l70i2xcj
} V#Y"0l+~
} @|w/`!}9q
insertSort(data,0,1); "85)2*+
}
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8ZjRMr}
/** `{IL.9M!f
* @param data icVB?M,m
* @param j .n.N.e
* @param i |eye) E:
*/ f*xv#G
private void insertSort(int[] data, int start, int inc) { :YX5%6
int temp; iN0'/)ar
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fV6ddh
} 'F/uD1;
} e=#D1
} lc [)Ev
p,(W?.ZDN?
} c*R\fQd
S5H}
快速排序: FH%:NO
Ks^wX
package org.rut.util.algorithm.support; N<KsQsy=
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import org.rut.util.algorithm.SortUtil; ;1_3E2E$
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5T8
/** !"E/6z2&(k
* @author treeroot i&)([C0z$
* @since 2006-2-2 V+U89j1g
* @version 1.0 o7PS1qcya<
*/ j}J=ZLr/V"
public class QuickSort implements SortUtil.Sort{ 2zv:j7
|h/{qpsu
/* (non-Javadoc) heWQPM|s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ix(,gDN
*/ n8\88d
public void sort(int[] data) { K2v[_a~@
quickSort(data,0,data.length-1); @a=jSB#B
} qrZ3`@C4k
private void quickSort(int[] data,int i,int j){ ,5T1QWn^f
int pivotIndex=(i+j)/2; Y}C|4"V
file://swap 1@TL>jq
SortUtil.swap(data,pivotIndex,j); /&czaAR-
;V f{3
int k=partition(data,i-1,j,data[j]); 5vS[{;<&
SortUtil.swap(data,k,j); -V"W
if((k-i)>1) quickSort(data,i,k-1); |v#D}E
if((j-k)>1) quickSort(data,k+1,j); !N][W#:
+.rOqkxJ
} k3Puq1H
/** {}RU'<D
* @param data {z;K0
* @param i nHZhP4W
* @param j E*,nKJu'r
* @return 3=Uy t
*/ ?Ycl!0m
private int partition(int[] data, int l, int r,int pivot) { oxI?7dy5
do{ KCp9P2kv.
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x",ktE>9
SortUtil.swap(data,l,r); rmWsob
} CQ{{J{pU"
while(l SortUtil.swap(data,l,r); JIYzk]Tj
return l; 68<W6z
} _sL;E<)y(
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} tef>Py
+nB0O/m'U
改进后的快速排序: RHbbj}B
x]R0zol
package org.rut.util.algorithm.support; ]!jfrj
{(tR<z)
import org.rut.util.algorithm.SortUtil; 0$=U\[og
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/** kaIns
* @author treeroot <7L-25 =
* @since 2006-2-2 *.D{d0A
* @version 1.0 Z TB6m`
*/ c@nh>G:y{&
public class ImprovedQuickSort implements SortUtil.Sort { %uiCC>cC
tehWGqx)
private static int MAX_STACK_SIZE=4096; XJwgh y?(
private static int THRESHOLD=10; MJH>rsTQ
/* (non-Javadoc) tqp i{e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0G Q8}r
*/ 2#/sIu-L
public void sort(int[] data) { 4 +p1`
int[] stack=new int[MAX_STACK_SIZE]; Yn?Xo_Y
TT#V'r\
int top=-1; J*:_3Wsy
int pivot; 9q[[
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int pivotIndex,l,r; Are0Nj&?
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stack[++top]=0; n!Y}D:6c6
stack[++top]=data.length-1; _~P&8
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while(top>0){ *M>~$h7
int j=stack[top--]; :2wT)w z
int i=stack[top--]; x'6i9]+r
9JILK9mVO
pivotIndex=(i+j)/2; 8|L 5nQ
pivot=data[pivotIndex]; *&+zI$u(
yOP$~L#TWs
SortUtil.swap(data,pivotIndex,j); Es\J%*\u
m0^~VK |
file://partition Y 9st3
l=i-1; yWT1CID
r=j; vI48*&]wTf
do{ ^R(=4%8%"
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $?[pcgv
SortUtil.swap(data,l,r); ?zVE7;r4U
} J'WOqAnPZ
while(l SortUtil.swap(data,l,r); =`CK`x
SortUtil.swap(data,l,j); Yg 2P(
#8BI`.t)j
if((l-i)>THRESHOLD){ R;&k/v
stack[++top]=i; _oefp*iWS
stack[++top]=l-1; 7 ,uD7R_
} *UG?I|l|I
if((j-l)>THRESHOLD){ \-[ >bsg
stack[++top]=l+1; !u4eI0?R?
stack[++top]=j; mGmZ}H'{
} 4V
mUTMY
n 1^h;2gz
} Ruwp"T}mF
file://new InsertSort().sort(data); ,&* BhUC
insertSort(data); E2`9H-6e
} Q?`s4P)14o
/** ]zIIi%
* @param data \SYeDy
*/ "s t+2#{
private void insertSort(int[] data) { txX>zR*)
int temp; Z\n^m^Z
=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EF9Y=(0|
} qn}VW0!
} iVmy|ewd
} wCj)@3F
Lso%1M
} mW,b#'hy
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归并排序: 'bg'^PN>z
=k1sF3.V'c
package org.rut.util.algorithm.support; ']1a
E7B?G3|z3
import org.rut.util.algorithm.SortUtil; CqU ^bVs
GI:!,9
/** $_\x}`c~.
* @author treeroot \E05qk_;K
* @since 2006-2-2 tk:G6Bkid
* @version 1.0 Bcb
'4*:
*/ ;W\?lGOs{
public class MergeSort implements SortUtil.Sort{ QWC C
Y\4B2:Qd9
/* (non-Javadoc) )N\ BC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =xSf-\F
*/ G}}Lp~
public void sort(int[] data) { +4[9Eb'k=
int[] temp=new int[data.length]; ]-;JHB5A_:
mergeSort(data,temp,0,data.length-1); zq3f@xOK
} +u&3pK>f
$uRi/%Q9
private void mergeSort(int[] data,int[] temp,int l,int r){ $}us+hGZ
int mid=(l+r)/2; -<" ;|v4
if(l==r) return ; 3&+nV1
mergeSort(data,temp,l,mid); #|=lU4Bf
mergeSort(data,temp,mid+1,r); 'Ddzlip
for(int i=l;i<=r;i++){ hyhm{RC?[
temp=data; ~Ra8(KocD
} q{f (T\
int i1=l; s<3M_mt
int i2=mid+1; q; C6ID`
for(int cur=l;cur<=r;cur++){ S&J5QZjC
if(i1==mid+1) \
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data[cur]=temp[i2++]; 3Lv5>[MnN
else if(i2>r) S{{wcH$n'i
data[cur]=temp[i1++]; VG50n<m9
else if(temp[i1] data[cur]=temp[i1++]; Q=#FvsF#z3
else Z=a~0&G
data[cur]=temp[i2++]; g!cW`B'
} T&Z*=ShH
} `9\^.g)
g{K \
} m )r,
j;-2)ZLm
改进后的归并排序: ]U}B~Y
J
L1]auO*
package org.rut.util.algorithm.support; Gj[5ew?@
|nqN95'u+]
import org.rut.util.algorithm.SortUtil; 79h'sp6;
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/** la^K|!|
* @author treeroot mDuS-2G=D
* @since 2006-2-2 # 00?]6`z
* @version 1.0 {V8uk$
*/ i#*lK7
public class ImprovedMergeSort implements SortUtil.Sort { 7[0CVWs,
4jjo%N
private static final int THRESHOLD = 10; }n"gX>e~
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/* .VohW=D3
* (non-Javadoc) |M18/{
* =hI;5KF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TS=U%)Ik
*/ 0E{DO<~
public void sort(int[] data) { 7E5=Qx
int[] temp=new int[data.length]; 5Ux= 5a
mergeSort(data,temp,0,data.length-1); <@0S]jy
} Q6N?cQtOT
3|EAOoWnK
private void mergeSort(int[] data, int[] temp, int l, int r) { h&~9?B
int i, j, k; 2~V"[26t
int mid = (l + r) / 2; 6(ER$
if (l == r) k(@W
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return; ]a[2QQ+g
if ((mid - l) >= THRESHOLD) J\J3'u
mergeSort(data, temp, l, mid); P=s3&NDD
else u0qTP]
insertSort(data, l, mid - l + 1); ] 8<`&~a
if ((r - mid) > THRESHOLD) ZQ-6n1O
mergeSort(data, temp, mid + 1, r); x<.(fRv
else ^}J,;Zhu5
insertSort(data, mid + 1, r - mid); .;(a;f+{;
19%zcYTe
for (i = l; i <= mid; i++) { C3
BoH&
temp = data; d vo|9 >
} JcfGe4
for (j = 1; j <= r - mid; j++) { ZzP&Zrm
temp[r - j + 1] = data[j + mid]; oqg +<m
} ,v?FR
}v
int a = temp[l]; _'n]rQ'
int b = temp[r]; 9XUk.Nek
for (i = l, j = r, k = l; k <= r; k++) { b%0@nu4
if (a < b) { b7gN|Hw5 H
data[k] = temp[i++]; _G2)=yj]
a = temp; xP27j_*m>
} else { $-s8tc(
data[k] = temp[j--]; /wkrfYRs
b = temp[j]; MIN}5kc<
} O:imX>|u
} {]dvzoE]
} "EE(O9q
_3#_6>=M
/** $)KNp dXh
* @param data U_Q;WPJ
* @param l cxx8I
* @param i '+c@U~d*7
*/ lAo4)
private void insertSort(int[] data, int start, int len) { {CFy
%
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (Bv~6tj~J
} gtqtFrleG
} S@TfZ3Go|
} &MB1'~Q,hq
} ~n(LBA
0r?]b*IEK
堆排序: I$XwM
Tl+PRR6D*
package org.rut.util.algorithm.support; `P$X`;SwE
Fzn!
import org.rut.util.algorithm.SortUtil; 05
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lwjA07i
/** 6uX,J(V,
* @author treeroot 64^l/D(
* @since 2006-2-2 7loWqZ
* @version 1.0 PI"6d)S2
*/ ='-/JH~
public class HeapSort implements SortUtil.Sort{ 5XuQQ!`
w@\4ft6d
/* (non-Javadoc) kL<HG Qt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z>dvth
*/ r"t,/@`n
public void sort(int[] data) { bw!*=<
MaxHeap h=new MaxHeap(); 1Ve~P"w
h.init(data); ~B7<Yg
for(int i=0;i h.remove(); VZ7E#z+nM#
System.arraycopy(h.queue,1,data,0,data.length); *?>52 -&b
} ih|&q
,vBB". LY'
private static class MaxHeap{ &2n5m&
VJ1rU mO~
void init(int[] data){ -MORd{GF
this.queue=new int[data.length+1]; =)x+f/c]
for(int i=0;i queue[++size]=data; 1)f <
fixUp(size); >gl.ILo
} =Q6JXp
} y I[kaH"J
42:,*4t(
private int size=0; RVF<l?EI4R
/2Ok;!.
private int[] queue; def\=WyK
[+!+Yn6:
public int get() { U8</aQLGF
return queue[1];
!FvL2L
} G+\&8fi0
vYq"W%
public void remove() { kovJ9
SortUtil.swap(queue,1,size--); .&h|r>*|J
fixDown(1); Sw>,Q-32
} >4Qj+ou
file://fixdown \VypkbE+
private void fixDown(int k) { $y UPua/-
int j; cE?p~fq<
while ((j = k << 1) <= size) { r[#*..Y
if (j < size %26amp;%26amp; queue[j] j++; ?KE:KV[Y
if (queue[k]>queue[j]) file://不用交换 @ 0/EKWF
break; GC(QV}9z"
SortUtil.swap(queue,j,k); #IJ6pg>K
k = j; X +/^s)
} \KKE&3=
} ~y/qm
[P
private void fixUp(int k) { ^S(QvoaQ
while (k > 1) { A-h[vP!v|
int j = k >> 1; .}E@7^X
if (queue[j]>queue[k]) :W+%jn
break; )q[Wzx_ j<
SortUtil.swap(queue,j,k); (-@I'CFd
k = j; KHM,lj*
} SPauno <M
} db>"2EE
$^YHyfh
} cqcH1aSv
'>T hn{
} n8FIxl&u
:w7?]y6~S
SortUtil: F|P?|
r&~]6
U
package org.rut.util.algorithm; Q@*9|6-
?!3u?Kd
import org.rut.util.algorithm.support.BubbleSort; O8-Z >;
import org.rut.util.algorithm.support.HeapSort; 29&F_
import org.rut.util.algorithm.support.ImprovedMergeSort; Bp4#"y2
import org.rut.util.algorithm.support.ImprovedQuickSort; l-SVI9|<0
import org.rut.util.algorithm.support.InsertSort; 9Fg:
import org.rut.util.algorithm.support.MergeSort; hW\'EJ
import org.rut.util.algorithm.support.QuickSort; iEbW[sX[4
import org.rut.util.algorithm.support.SelectionSort; 7Q~$&G
import org.rut.util.algorithm.support.ShellSort; *9`k$'
gm1RQ^n,@.
/** aFL<(,~r
* @author treeroot MFipXE!
* @since 2006-2-2 H)Z$j&S{
* @version 1.0 f{|n/j;n=C
*/ 'vKae
public class SortUtil { J8[aVG
public final static int INSERT = 1; w,X J8+B
public final static int BUBBLE = 2; Vw`%|x"Xz
public final static int SELECTION = 3; th5UzpB4
public final static int SHELL = 4; *r|13|k
public final static int QUICK = 5; #fXy4iL l
public final static int IMPROVED_QUICK = 6; >xXq:4l>}
public final static int MERGE = 7; 9j5B(_J^
public final static int IMPROVED_MERGE = 8; XMaw:Fgr
public final static int HEAP = 9; z$VVt?K
GY"c1KE$
public static void sort(int[] data) { kc2
8Q2
sort(data, IMPROVED_QUICK); jV<5GWq
} +^.xLTX`$
private static String[] name={ Wxi;Tq9C@_
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Q v},X~^R
}; {#&D=7LP
JtF)jRB0,
private static Sort[] impl=new Sort[]{ 0QEcJ]Qb8
new InsertSort(), TjpAJW@-
new BubbleSort(), |:`)sx3@#
new SelectionSort(), ${97G#
new ShellSort(), C%/@U[;
new QuickSort(), V3/OKI\o
new ImprovedQuickSort(), X@7:FzU9
new MergeSort(), .73sY5hdTN
new ImprovedMergeSort(), X3y28 %R
new HeapSort() !"ydl2
}; @}'?o_/C
@k/|%%uP
public static String toString(int algorithm){ ]puDqu5!
return name[algorithm-1]; .fK~IKA
} "po;[
Ia2
\#gguq?[
public static void sort(int[] data, int algorithm) { \t? ;p-+ta
impl[algorithm-1].sort(data); !HXyvyDN
} -1ci.4F&
IcNZUZGE
public static interface Sort { {RD9j1
public void sort(int[] data); f3<2531/}
} dx.Jv/Mb
%mOQIXr1s
public static void swap(int[] data, int i, int j) { aED73:b
int temp = data; ho!qXS
data = data[j]; TnuA uui*
data[j] = temp; EV;"]lC9
} {9~3y2:
} Ctk1\quz