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。 _I:/ZF5
插入排序: N/MUwx;P
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package org.rut.util.algorithm.support; t%E!o0+8Z
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import org.rut.util.algorithm.SortUtil; ,[P{HrHx
/** Z$/xy"
* @author treeroot o!kbK#k
* @since 2006-2-2 ~f$|HP}
* @version 1.0 t.xxSU5~%
*/ AP'*Nh@Ik(
public class InsertSort implements SortUtil.Sort{ ^\4h<M
{y=j?lD
/* (non-Javadoc) K/IWH[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wk5s)%V
*/ ^hZ0IM
public void sort(int[] data) { W04@!_) <
int temp; ahJ`$U4n
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n>BkTaI
} ;DFSzbF`
} x!5'`A!W%
} Vl&?U
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} M
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冒泡排序: -p]1=@A<}
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package org.rut.util.algorithm.support; |}BLF
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import org.rut.util.algorithm.SortUtil; 2mVD_ s[`
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/** Qz5sxi
* @author treeroot ZX9T YN
* @since 2006-2-2 J;.wXS_U8
* @version 1.0 4|riKo)
*/ E8$20Ue
public class BubbleSort implements SortUtil.Sort{ /Z'L^L%R
K|zZS%?$
/* (non-Javadoc) 6jE|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &Sw%<N*r
*/ u0|8Tgf
public void sort(int[] data) { }B\a<0L/
int temp; X' H[7 ^W
for(int i=0;i for(int j=data.length-1;j>i;j--){ RJ 8+h
if(data[j] SortUtil.swap(data,j,j-1); dCi?SIN
} $'BSH4~|.
} Pg,b-W?n*
} + jc!5i .
} Q=;U@k@>
&"f";
} n}F&1Z
3!XjtVhK?I
选择排序: $q6BP'7
Dz>^IMsY
package org.rut.util.algorithm.support; )h"<\%LU
uki#/GzaO
import org.rut.util.algorithm.SortUtil; Cl;oi}L
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/** vQosPS_2L
* @author treeroot \?[v{WP)
* @since 2006-2-2 LClNxm2X
* @version 1.0 cv998*|X:
*/ Ktb\ b w
public class SelectionSort implements SortUtil.Sort { >`Y.+4mE
^Cu\VV
/* Aw$x;3y
* (non-Javadoc) IUE~_7
* j9eTCJqB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -+(jq>t
*/ [#-b8Cu
public void sort(int[] data) { ALrw\qV
int temp; }\tdcTMgS
for (int i = 0; i < data.length; i++) { v- T$:cL
int lowIndex = i; ;X?}x%$
for (int j = data.length - 1; j > i; j--) { 1O/+8yw
if (data[j] < data[lowIndex]) { R;s?$;I
lowIndex = j; &]"
} ")O%86_Q:
} [Y|8\Ph`&
SortUtil.swap(data,i,lowIndex); ~ELNyI11
} 2`7==?
} GPkmf%FJ
PDJr<E?
} E7t+E)=8
hL/)|N~
Shell排序: o3Yb7h9
.`HYA*8_
package org.rut.util.algorithm.support; E27vR 7
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import org.rut.util.algorithm.SortUtil; ?5C!<3gM)
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/** V=R 3)GC
* @author treeroot P\yDa*m
* @since 2006-2-2 {P*pkc
* @version 1.0 \|H!~) h$1
*/ C7rNV0.Fq
public class ShellSort implements SortUtil.Sort{ E@@5BEB ~
'Y*E<6:
/* (non-Javadoc) ',Y.v"']4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H5DC[bZMb%
*/ Bc+w+
public void sort(int[] data) { qaY1xPWz"
for(int i=data.length/2;i>2;i/=2){ veMH
for(int j=0;j insertSort(data,j,i); /qMG=Z
} "@%7 -nu
} %-)H^i~]%
insertSort(data,0,1); $;1#To
} 3,p]/Z_
+MR.>"
/** 8$")%_1]
* @param data 9!6f-K
* @param j j/R[<47
* @param i Ja,wfRq
*/ s3~lT.
private void insertSort(int[] data, int start, int inc) { &M46&^Jho
int temp; kStnb?nk
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 5Sm}nH
} a][f
} .:@Ykdm4I
} fKeT,U`W
'C`U"I
} _7H7
dV
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快速排序: DnC{YK
E)TN,@%
package org.rut.util.algorithm.support; iIMd!Q.)@
~D<IB#C
import org.rut.util.algorithm.SortUtil; D&od?3}E
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/** K~AR*1??[
* @author treeroot '10oK {m$
* @since 2006-2-2 j}%ja_9S
* @version 1.0 wb]%m1H`:
*/ cv?06x{
public class QuickSort implements SortUtil.Sort{ c9HrMgW
n!NS(.o
/* (non-Javadoc) tXoWwQD;Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q;R],7Re
*/ ;|pBFKx
public void sort(int[] data) { ,=UK}*e"
quickSort(data,0,data.length-1); E0Y-7&Fv
} RTE8Uq36
private void quickSort(int[] data,int i,int j){ RP~|PtLw_
int pivotIndex=(i+j)/2; tmv&U;0Z
file://swap Fpm|_f7
SortUtil.swap(data,pivotIndex,j); y`\@N"Cf
fa++MNf}3
int k=partition(data,i-1,j,data[j]); Ir
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SortUtil.swap(data,k,j); ruc++@J@
if((k-i)>1) quickSort(data,i,k-1); 1$D_6U:H0
if((j-k)>1) quickSort(data,k+1,j); +b.g$CRr
).Fpgxs
} >OL 3H$F
/** /q<__N
* @param data &:/hrighH
* @param i TV<'8L
* @param j R%{a1r>9h
* @return Rtb7|
*/ 19HM])Zw\
private int partition(int[] data, int l, int r,int pivot) { f({Ei`|
do{ {{B%f.
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ix([mQg
SortUtil.swap(data,l,r); q#T/
} 01}C^iD
while(l SortUtil.swap(data,l,r); Q~OxH'>>(
return l; qCljo5Tq'
} U@HK+C"M|
G`n_YH084
} <L"GqNuRQ
v{(^1cX
改进后的快速排序: 7uKNd
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PMNjn9d
package org.rut.util.algorithm.support; {l>yi
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import org.rut.util.algorithm.SortUtil; .ni_p 6!
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/** 2>cGH7EBD
* @author treeroot 5MN8D COF
* @since 2006-2-2 +?:7O=Y
* @version 1.0 z`!XhU
*/ %K>,xiD)
public class ImprovedQuickSort implements SortUtil.Sort { V#XppYU
,{BaePMp
private static int MAX_STACK_SIZE=4096; s!?`T1L
private static int THRESHOLD=10; lBK}VU^
/* (non-Javadoc) :[O
8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lwrCpD.
*/ ,quoRan
public void sort(int[] data) { L;*ljZ^c
int[] stack=new int[MAX_STACK_SIZE]; |.F$G<
n;@bLJ$W
int top=-1; v3aYc:C
int pivot; }q $5ig
int pivotIndex,l,r; U^Q:Y}^
b6U2GDm\s
stack[++top]=0; Y&S24aql
stack[++top]=data.length-1; #:[t^}
qv]}$WU
while(top>0){ vgsJeV`}I
int j=stack[top--]; V!lZ\)
int i=stack[top--]; lr`&mZ( j
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pivotIndex=(i+j)/2; Ov-icDMm
pivot=data[pivotIndex]; OW3sS+y
w2
a1mU/
SortUtil.swap(data,pivotIndex,j); \HKxh:F'
YL]Z<%aKt
file://partition |G?htZF
l=i-1; Y8m1M-#w
r=j; TygW0b 1
do{ K('hC)1
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7JEbH?lEN
SortUtil.swap(data,l,r); wgamshm"d
} 'eLqlu|T
while(l SortUtil.swap(data,l,r); M_"L9^^>N
SortUtil.swap(data,l,j); ) L#i%)+
!a7[8&
if((l-i)>THRESHOLD){ q(`/Vo4g(
stack[++top]=i; ^>jwh
stack[++top]=l-1; &3bx`C
} .?R!DYC`
if((j-l)>THRESHOLD){ 9aze>nxh.
stack[++top]=l+1; H5Z$*4%G
stack[++top]=j; q35f&O;
} Jtr"NS?a]
~/98Id}v
} syaPpM
Q-
file://new InsertSort().sort(data); nm6h%}xND<
insertSort(data); ~]nSSD)\
} f"%{%M$K
/** c(!6^qk]!`
* @param data ]ooIrY8
*/ )}"wesNo".
private void insertSort(int[] data) { nQ5n-A&["
int temp; @\f^0^G
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ] lrWgm
} n[G &ksQI
} 2/"u5
} IIn"=g=9
G/7cK\^u
} IOqwCD[
xx#zN0I>-y
归并排序: `< xn8h9p
"|q qUKJZ
package org.rut.util.algorithm.support; orWbU
UC
;[M}MFc/`
import org.rut.util.algorithm.SortUtil; 9f&C
>pp5;h8!
/** "nw;NIp!
* @author treeroot b[o"7^H
* @since 2006-2-2 OmIg<v0\;
* @version 1.0 DXJ`oh
*/ i*/Yz*<
public class MergeSort implements SortUtil.Sort{ D/vOs[X
o,
NT e5
/* (non-Javadoc) 5N/%v&1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EfCx`3~EX
*/ -o$QS,
public void sort(int[] data) { '}B+r@YCN
int[] temp=new int[data.length]; Q9Kve3u-i
mergeSort(data,temp,0,data.length-1); mi,E-
} G!>z;5KuS
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private void mergeSort(int[] data,int[] temp,int l,int r){ kBD>-5Sn_T
int mid=(l+r)/2; $5ak_@AC
if(l==r) return ; \=:~ki=@B
mergeSort(data,temp,l,mid); )qo {c1X
mergeSort(data,temp,mid+1,r); d@XV:ae
for(int i=l;i<=r;i++){ +n{#V;J
temp=data; gcdlT7F)b-
} CG Y]r.O*
int i1=l; -f% '
int i2=mid+1; q*_/to
for(int cur=l;cur<=r;cur++){ %oZ6l*
if(i1==mid+1) 925|bX6I
data[cur]=temp[i2++]; }BZ"S-hZ
else if(i2>r) KK iE@_z
data[cur]=temp[i1++]; "B3N*R(["
else if(temp[i1] data[cur]=temp[i1++]; !F A]
else x:),P-~w
data[cur]=temp[i2++]; m[~V/N3
} Xejo_SV&?
} jL%x7?*U0
8Kg n"M3
} j|U#)v/
8ZM&(Lz7u
改进后的归并排序: *K|W
/'_&
pA9+Cr!0Q
package org.rut.util.algorithm.support; &7PG.Ff!r
nExU#/*~^
import org.rut.util.algorithm.SortUtil; wO'TBP
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/** ^p[rc@+
* @author treeroot ?OcJ)5C4
* @since 2006-2-2 UTH*bL5/J2
* @version 1.0 kCR_tn
4
*/ o4m\~as)Y
public class ImprovedMergeSort implements SortUtil.Sort { k5:G-BQ:
9
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private static final int THRESHOLD = 10; Nl^;A><u
6$kq aS##
/* $c0h.t
* (non-Javadoc) e+~\+:[?
* ,]46I.]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4]?<hH 9
*/ a%kQl^I4
public void sort(int[] data) { gp>3I!bo[K
int[] temp=new int[data.length]; g)#W>.Asd
mergeSort(data,temp,0,data.length-1); (7*%K&x
} , w{e
&;^YBW :I
private void mergeSort(int[] data, int[] temp, int l, int r) { Fv~20G(O
int i, j, k; <0b)YJb4M
int mid = (l + r) / 2; c~z82iXNO
if (l == r) l`oZ)?ur
return; )bS yB29S
if ((mid - l) >= THRESHOLD) ~Sj9GxTe
mergeSort(data, temp, l, mid); sDPs
G5q<
else |TS>hwkI
insertSort(data, l, mid - l + 1); O(fM?4w
if ((r - mid) > THRESHOLD) 7gf05Z'=
mergeSort(data, temp, mid + 1, r); hQYL`Dni
else /]K^
rw[
insertSort(data, mid + 1, r - mid); a1EOJ^}0
&"yx<&c}
for (i = l; i <= mid; i++) { y0sR6TY)f
temp = data; T|nDTezr
} z@!`:'ak
for (j = 1; j <= r - mid; j++) { $"+djI?E9
temp[r - j + 1] = data[j + mid]; ULs\+U
} 1oR7iD^
int a = temp[l]; Zq+v6fk_Mn
int b = temp[r]; >3p\m
for (i = l, j = r, k = l; k <= r; k++) { [k.t WA,&
if (a < b) { tXNm$Cq.|
data[k] = temp[i++]; fObg3S92
a = temp; bo2H]PL*
} else { A,JmX
data[k] = temp[j--]; u(@$a4z
b = temp[j]; 3@kf@Vf
} SF7\<'4\N
} KaPAa:Q
} ,]bhy p
Vc 1\i
/** a!a-b~#cx
* @param data
?9!6%]2D
* @param l 2L3)#22m*
* @param i J[l7di5
*/ `g(Y*uCp
private void insertSort(int[] data, int start, int len) { GZEc l'h*
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <CS(c|7
} zwhe
} f86XkECZ;`
} |?!~{-o
} "Lzi+1
p2#)A"
堆排序: p)`{Sos
yMG1XEhuG
package org.rut.util.algorithm.support; (ceNO4"cZ
?:vv50
import org.rut.util.algorithm.SortUtil; RiDJ> 6S
_dqzB$JV
/** ~5NXd)2+Ks
* @author treeroot Zq^At+8+
* @since 2006-2-2 +[M6X}
TQ
* @version 1.0 [A~y%bI"
*/ 51#_Vg
public class HeapSort implements SortUtil.Sort{ vx1c,8
'.on)Zd.
/* (non-Javadoc) B-xGX$<z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p,
h9D_
*/ E%yNa]\P
public void sort(int[] data) { %aHB"vi6
MaxHeap h=new MaxHeap(); 2y//'3[
h.init(data); SON-Z"v
for(int i=0;i h.remove(); +NeOSQSj
System.arraycopy(h.queue,1,data,0,data.length); (uXL^oja
} rV2WnAb[H&
]s]vZ
private static class MaxHeap{ )P%ZA)l%_o
lG9bLiFY
void init(int[] data){ eX?OYDDC0j
this.queue=new int[data.length+1]; Tl%`P_J)-S
for(int i=0;i queue[++size]=data; EMh7z7}Rr
fixUp(size); ERUz3mjA/
} ]_Vx{oT7
} hW%TM3l}
,`|3KE9
private int size=0; y<?kzt
0g
+7uGp:
private int[] queue; &TnS4O
>W%EmnLK
public int get() { iIvc43YV%
return queue[1]; ?8I?'\F;
}
zkt+7,vI
<->{
public void remove() { R]vV*
SortUtil.swap(queue,1,size--); KxI&G%z
fixDown(1); O(#)m>A
} &T+atL `N
file://fixdown %D UH@j
private void fixDown(int k) { F5LuSy+v
int j; l>2E (Y|
while ((j = k << 1) <= size) { $~~Jw]
if (j < size %26amp;%26amp; queue[j] j++; p2Z?T}fa}&
if (queue[k]>queue[j]) file://不用交换 "An,Q82oHf
break; }QN1|mP2
SortUtil.swap(queue,j,k); JUsQ,ETn
k = j; >NO[UX%yP
} D|lzGt
} Y#]+Tm(+
private void fixUp(int k) { 5 f@)z"j
while (k > 1) { ?L5zC+c!
int j = k >> 1; pf2[,v/
if (queue[j]>queue[k]) b[sx_b
break; XtXEB<4Z
SortUtil.swap(queue,j,k); qaqBOHI6G
k = j; ]S&&|Fc
} i)o2klIkB
} ."TxX.&HE
J &o|QG
} cW~}:;D4
|+"<wEKI
} T] R|qlZ
5/q}`T9i%7
SortUtil: sz5MH!/PJ
fWCo;4<5?
package org.rut.util.algorithm; x5|I
%G3h?3
import org.rut.util.algorithm.support.BubbleSort; FGPB:
import org.rut.util.algorithm.support.HeapSort; a_[Eh fE
import org.rut.util.algorithm.support.ImprovedMergeSort; *]. 7dec/
import org.rut.util.algorithm.support.ImprovedQuickSort; sW Qfr$^A
import org.rut.util.algorithm.support.InsertSort; `uq8G
import org.rut.util.algorithm.support.MergeSort; A;G;^s
import org.rut.util.algorithm.support.QuickSort; @d^Grm8E
import org.rut.util.algorithm.support.SelectionSort; F;>V>" edl
import org.rut.util.algorithm.support.ShellSort; u~r=)His
>L|;|X!m9\
/** @+;$jRwq
* @author treeroot @v$Y7mw3D
* @since 2006-2-2
bo<~jb{
* @version 1.0 q?,).x
nN
*/ kJWn<5%ayg
public class SortUtil { K}2Erm%A@y
public final static int INSERT = 1; (ScxLf=]
public final static int BUBBLE = 2; qBU-~"2t
public final static int SELECTION = 3; hMzs*gK
public final static int SHELL = 4; x*
DarSk
public final static int QUICK = 5; g6W)4cC8a
public final static int IMPROVED_QUICK = 6; S_iMVHe
public final static int MERGE = 7; )r';lGh2#
public final static int IMPROVED_MERGE = 8; "C?#SO
B
public final static int HEAP = 9; BmBj7
"MxnFeLM#
public static void sort(int[] data) { Okgv!Nt8)A
sort(data, IMPROVED_QUICK); w _u\p a
} rJd,Rdt.
private static String[] name={ NnO~dRx{
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" cy*?&~;
}; Q.bXM?V)
A_n7w
private static Sort[] impl=new Sort[]{ Pih tf4i
new InsertSort(), !y#"l$"xK
new BubbleSort(), <3(LWxw
new SelectionSort(), uvgdY
new ShellSort(), h}-3\8 >
new QuickSort(), 1ofKt=|=
new ImprovedQuickSort(), |o,YCzy|5
new MergeSort(), SD#]$v
new ImprovedMergeSort(), M])ZK
new HeapSort() %/EVUN9=
}; <
|e,05aM
p$SX
public static String toString(int algorithm){ r)qnl9?;`]
return name[algorithm-1]; JgG$?n\
} agkA}O
5NBV[EP
public static void sort(int[] data, int algorithm) { U6=..K!q
impl[algorithm-1].sort(data); \%u3
} &9/O!3p)
b>_o xK
public static interface Sort { #1J &7F1
public void sort(int[] data); Yi
.u"sh]
} TPVVck-T8
BMhy=+\
public static void swap(int[] data, int i, int j) { [vge56h
int temp = data; U
-Y03
data = data[j]; AUeu1(
data[j] = temp; <m:m &I
8@
} 7}1~%:6
} ;sfb 4x4