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。 ^68BxYUoD\
插入排序: g
:Z,
ab4
;zl/
package org.rut.util.algorithm.support; N;BS;W5I
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import org.rut.util.algorithm.SortUtil; hm5A@Z
/** D@yuldx'/
* @author treeroot =*u:@T=d5
* @since 2006-2-2 RZ:i60
* @version 1.0 M+N7JpR
*/ ErDt~FH
public class InsertSort implements SortUtil.Sort{ m#oZu {
dGb]`* E
/* (non-Javadoc) `xO&!DN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &_!g|-
*/ VC6S4FU4K
public void sort(int[] data) { H@8g 9;+
int temp; Y=6b oT
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G)E#wh_S^
} Y_)aoRjB
} 1wqsGad+;
} )n[ oP%
3GS oHsNk
} `[+nz
rLkO
B!hrr
冒泡排序: FB0y
82X}@5o2
package org.rut.util.algorithm.support; ~!,Q<?
k_=~ObA$g
import org.rut.util.algorithm.SortUtil; Ass8c]H@
3d{v5. C#X
/** oj7X9~ nd
* @author treeroot USnKj_e
* @since 2006-2-2 1{-W?n
* @version 1.0 "}bk
*2
*/ eqSCNYN
public class BubbleSort implements SortUtil.Sort{ s68EzFS
,T{(t@
/* (non-Javadoc) H>-?/H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +|OkT
*/ 6NCa=9
public void sort(int[] data) { #lax0IYY=
int temp; c?0uv2*Yh
for(int i=0;i for(int j=data.length-1;j>i;j--){ Qr;es,f
if(data[j] SortUtil.swap(data,j,j-1); j~G^J
} &/J[P dSb$
} V 'Gi2gNaP
} '"5"$)7
} .~a)
Y962rZ
} a$MMp= p
y@AKb
选择排序: E0c5c
kRgyvA,*;
package org.rut.util.algorithm.support; n%Xw6qV:
0>-l {4srs
import org.rut.util.algorithm.SortUtil; 2I:vie
*?gn@4Ly
/** Y. yM 1 z
* @author treeroot PZO 7eEt8
* @since 2006-2-2 xZS
* @version 1.0 `"m"qUd
*/ \1RQ),5 %]
public class SelectionSort implements SortUtil.Sort { ..7"&-?g{4
~aH*ZA*f
/* {R[lsdH(X
* (non-Javadoc) C["^%0lj
* b]mRn{r?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C9Fc(Y?_
*/ <P( K,L?r
public void sort(int[] data) { #l-,2C~
int temp; 2?ZHWS>U
for (int i = 0; i < data.length; i++) { [kFX>G4
int lowIndex = i; ls,gQ]B:P
for (int j = data.length - 1; j > i; j--) { >}<:5gZtA
if (data[j] < data[lowIndex]) { Bw"L!sZ
lowIndex = j; ~MO'%'@
} n <lU;
} U%_a@&<
SortUtil.swap(data,i,lowIndex); %M9^QHyo@
} {C*mn !u
} ,y2ur 2
t2+m7*76
} I_#)>%H
~srmlBi6
Shell排序: Y*f7& '[
"6pjkEt4
package org.rut.util.algorithm.support; 8c__ U<
~AK!_EOs`
import org.rut.util.algorithm.SortUtil; h+.^8fPR
BD=;4SLT
/** $F G4wA
* @author treeroot K(6=)
* @since 2006-2-2 5yxZ
5Ni!
* @version 1.0 zK:/
1
*/ %
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public class ShellSort implements SortUtil.Sort{ Rl3KE)<
'L3 \ I
/* (non-Javadoc) [ Q=)f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s/sH",
*/ [b;Oalw
public void sort(int[] data) { P).
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for(int i=data.length/2;i>2;i/=2){ f#JLE+0Y
for(int j=0;j insertSort(data,j,i); 9KXp0Q?-$
} 6tG9PG98q9
} (: ZOoL
insertSort(data,0,1); c
q3CN@
} $!obpZ~ }
rM bb%d:
/** %iD>^ Dp
* @param data !k<+-Lf:2
* @param j Jz%&-e3
* @param i %Si3t2W/
*/ x:l`e:`y9
private void insertSort(int[] data, int start, int inc) { sSD(mO<(
int temp; hH[JY(V
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); msY"Y*4
} R>gj"nB
} }clFaT>m?
} -Qn:6M>w^
t'9E~_!C
} $AsM 9D<BE
5YC(gv3/
快速排序: ix!u#7
)-jvp8%BK
package org.rut.util.algorithm.support; 4,<~t>M1
oTx#e[8f{
import org.rut.util.algorithm.SortUtil; B0R[f
Y
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/** }#E4t3
* @author treeroot ]L&_R^
* @since 2006-2-2 dr/!wr'&hS
* @version 1.0 ,#WXAAmm
*/ *$l8H[
public class QuickSort implements SortUtil.Sort{
w$B7..r
IRS^F;)
/* (non-Javadoc) Yhlk#>I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h/_z QR-
*/ xc*ys-Nv
public void sort(int[] data) { WMUw5h
quickSort(data,0,data.length-1); KqtI^qC8
} BAKfs/N
private void quickSort(int[] data,int i,int j){ w[|!$J?
int pivotIndex=(i+j)/2; fp>o ^+VB
file://swap Hpsg[d)!
SortUtil.swap(data,pivotIndex,j); 5 !NPqka}.
ZcdS?Z2k
int k=partition(data,i-1,j,data[j]); j:sac*6m
SortUtil.swap(data,k,j); Y":hb;&
if((k-i)>1) quickSort(data,i,k-1); xMuy[)b
if((j-k)>1) quickSort(data,k+1,j); G&n_vwZ%
vMC;5r6*d
} >2C;5ba
/** GuS3O)6Sg
* @param data z$YOV"N
* @param i `\.n_nM
* @param j I}8F3_b,#
* @return u>? VD%
*/ qBwqxxTc
private int partition(int[] data, int l, int r,int pivot) { "thu@~aC
do{ W%$p,^@S5
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `86b
SortUtil.swap(data,l,r); {9=U6m^R2
} 4a646jg)
while(l SortUtil.swap(data,l,r); )8N/t6Q
return l; tx.YW9xD
} RI%l& Hm
y-Ol1R3:c#
} @'U4-x
Jq; }q63:
改进后的快速排序: BF@VgozW
x)GoxH~#
package org.rut.util.algorithm.support; gM=~dBz
ahf$#UQLb
import org.rut.util.algorithm.SortUtil; 9GGBJTk-
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/** +,KuYa{lu
* @author treeroot ]O \6.>H
* @since 2006-2-2 UHg^F4>4
* @version 1.0 =kCpCpET
*/ ]pGr'T~Gj
public class ImprovedQuickSort implements SortUtil.Sort { zzx4;C",u
uL= \t=
private static int MAX_STACK_SIZE=4096; +HcH]D;
private static int THRESHOLD=10; FUOvH85f
/* (non-Javadoc) dy0!Zz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zZ wD)p?_g
*/ ov+qYBuFw
public void sort(int[] data) { |On6?5((e
int[] stack=new int[MAX_STACK_SIZE]; :,u+[0-S
nDo|^{!L`
int top=-1; un/R7"
int pivot; ^:q(ksssY
int pivotIndex,l,r; iVl"H@m/
]#q dA(Kl
stack[++top]=0; E }yxF.
stack[++top]=data.length-1; :I7MP
mB
:lp=c`
while(top>0){ WU\):n
int j=stack[top--]; HW d,1
int i=stack[top--]; OGVhb>LO1
V:+}]"yJ,
pivotIndex=(i+j)/2; nxJhK
T
pivot=data[pivotIndex]; ?|L)!LYx
1ERz:\
SortUtil.swap(data,pivotIndex,j); N,O[pTwj
}I;W
file://partition Pf!K()<uJ
l=i-1; #A/jGv^
r=j; PM|K*,3J
do{ 6lhVwgy3A
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); f(C0&"4e
SortUtil.swap(data,l,r); Fivv#4YO
} Md~mI8
while(l SortUtil.swap(data,l,r); 'D-imLV<<
SortUtil.swap(data,l,j); V-
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99eS@}RC
if((l-i)>THRESHOLD){ }cP3i
stack[++top]=i; OO$<Wgh
stack[++top]=l-1; E*ic9Za8`h
} q4Z\y
if((j-l)>THRESHOLD){ Uarb
[4OZ
stack[++top]=l+1; -8o8lz
stack[++top]=j; f;b(W
} hZFbiGQr\
(;n|>l?*
} &x;nP 6mV
file://new InsertSort().sort(data); n% *u;iG
insertSort(data); o1Xk\R{
} =thgNMDm"
/** *yf+5q4t
* @param data ?T^$,1-
*/ b+C>p2 %
private void insertSort(int[] data) { |%tR#!&[:g
int temp; X23TS`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dRu@5
:BP
} s<5t}{x
} }ri"u;.R
} Hp,r
@
S<>e(x3g]
} =HSE
tVe*J@i\$
归并排序: ~@-Az([H
U{;i 864:}
package org.rut.util.algorithm.support; E:i3
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+Q'/c0o
import org.rut.util.algorithm.SortUtil; r^@*Cir
S`R
( _eD@
/** fg,~[%1
* @author treeroot "ex?
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* @since 2006-2-2 }&!rIU
* @version 1.0 9]S}m[8k
*/ TX*P*-'
public class MergeSort implements SortUtil.Sort{ #fFEo)YG
zX5p'8-
/* (non-Javadoc) ./6L&?*`~;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I*24%z9
*/ S'A~9+
public void sort(int[] data) { W9u(
int[] temp=new int[data.length]; yEz2F3[ S
mergeSort(data,temp,0,data.length-1); ypml22)kz
} O|OPdD
8RocObY_W
private void mergeSort(int[] data,int[] temp,int l,int r){ N.VzA
6C
int mid=(l+r)/2; c\R!z&y~
if(l==r) return ; qV(Plt%
mergeSort(data,temp,l,mid); AQFx>:in
mergeSort(data,temp,mid+1,r); Dm5UQe
for(int i=l;i<=r;i++){ sd=i!r)ya
temp=data; B[Tw0rQ
} 8..itty
int i1=l; HFf|
>&c&
int i2=mid+1; c
shZR(b
for(int cur=l;cur<=r;cur++){ H%/$Rqg
if(i1==mid+1) HL_MuyE
data[cur]=temp[i2++]; W58\V
else if(i2>r) eR3!P8t
data[cur]=temp[i1++]; S4tdWA
else if(temp[i1] data[cur]=temp[i1++]; U2K>\/ -~
else |_ ;-~bmb
data[cur]=temp[i2++]; CqF<
BE
} !>! l=Z
} aoCyYnZD
Xe*
L^8+
} "cti(0F-d
M ,<%j
改进后的归并排序: ,;{mH]"s
wlkS+$<
package org.rut.util.algorithm.support; A]>0lB
$YW z~^f
import org.rut.util.algorithm.SortUtil; yyZjMnuD
=b;v:HC
/** rb9x||
* @author treeroot ()P?f ed
* @since 2006-2-2 2sf/^XC1
* @version 1.0 c !5OK4+Z
*/ v1;`.PWD
public class ImprovedMergeSort implements SortUtil.Sort { fPspJug
3J@#V '
private static final int THRESHOLD = 10; o{:D
6KV&E8Gn
/* ?Bk"3{hl
* (non-Javadoc) }G-qOt
* `<
VoZ/v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #opFUX-
*/ cDLS)
public void sort(int[] data) { t6j(9[gGq
int[] temp=new int[data.length]; N>@AsI
mergeSort(data,temp,0,data.length-1); `oq
3G }
} bu\,2t}B
VP|9Cm=Fg
private void mergeSort(int[] data, int[] temp, int l, int r) { }!B<MGBd
int i, j, k; )%)?M
*
int mid = (l + r) / 2; l=kgRh
if (l == r) 0PTB3-
return; _Z2VS"yH
if ((mid - l) >= THRESHOLD) CK.Z-_M
mergeSort(data, temp, l, mid); ^W'\8L
else W"z!sf5U
insertSort(data, l, mid - l + 1); _:=w6jCk
if ((r - mid) > THRESHOLD) 9;q@;)'5
mergeSort(data, temp, mid + 1, r); E-&=I> B5
else S[* e K
Z
insertSort(data, mid + 1, r - mid); ?^k-)V
hC~lH eH
for (i = l; i <= mid; i++) { $zDW)%nAX
temp = data; #&&^5r-b-
} 3\6jzD
for (j = 1; j <= r - mid; j++) { K2)),_,@5+
temp[r - j + 1] = data[j + mid]; >WG$!o +R
} ~vG~Z*F
int a = temp[l]; 6rdm=8WFA
int b = temp[r]; !MQo=k
for (i = l, j = r, k = l; k <= r; k++) { %z1WdiC
if (a < b) { nwW`Q>+#U
data[k] = temp[i++]; YdIV_&-W
a = temp; 7?B]X%
} else { L
+-B,466
data[k] = temp[j--]; T4._S:~
b = temp[j]; #jK{)%}mA
} fE7[Sk
} HL*jRl
} 7&OU!gp
tUL(1:-C
/** ;nSaZ$`5
* @param data .2Gn)dZU
* @param l c tTbvXP
* @param i a&4>xZU #
*/ rOH8W
private void insertSort(int[] data, int start, int len) { O*!+D-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8[
:FU
} aFd
,
} 0;r+E*`DA
} X~%Wg*Hm
} 2'_Oi-&
f4]nz:2
堆排序: LYv+Sv
GfPe0&h
package org.rut.util.algorithm.support; A0o6-M]'0
$OmcEd
import org.rut.util.algorithm.SortUtil; w%j 6zsTz
~@MIG
/** N]} L*o&
* @author treeroot .\LWV=B
* @since 2006-2-2 ?cowey\m
.
* @version 1.0 (\,mA-%E
*/ ]:Ocu--
public class HeapSort implements SortUtil.Sort{ Y#3m|b45n
NNb17=q_v
/* (non-Javadoc) o#Rao#bD:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k7f[aM 5]
*/ ayHI(4!$j
public void sort(int[] data) { }a-ikFQ]
MaxHeap h=new MaxHeap(); 5{[3I|m{
h.init(data); \D>'
for(int i=0;i h.remove(); b{(!Ls_ &
System.arraycopy(h.queue,1,data,0,data.length); Su-LZ'C\
} OA&N WAm4
ps_CQh0
private static class MaxHeap{ h9&<-k
,TeDJ\k
void init(int[] data){ BDD^*Y
this.queue=new int[data.length+1]; 82efqzT
for(int i=0;i queue[++size]=data; qeH#c=DQ
fixUp(size); ir3iW*5k
} g}L2\i688
} 6@; w%Ea
DTAEfs!ZW
private int size=0; LHR%dt|M
?)5}v4b
private int[] queue; RkP7}ZA;
H /*^$>0Uo
public int get() { mzfj!0zR*
return queue[1]; FV!
} S'B7C>i`#N
/,c9&it(M
public void remove() { O#CxS/M5
SortUtil.swap(queue,1,size--); 3Akb|r
fixDown(1); Z!^iPB0~D
} }NiJDs
file://fixdown ) l0=jb
private void fixDown(int k) { ].7)^
int j;
lf[(
while ((j = k << 1) <= size) { }7wQFKME
if (j < size %26amp;%26amp; queue[j] j++; *.ZV.(
if (queue[k]>queue[j]) file://不用交换 )I$_wB!UV
break; /$/\$f$
SortUtil.swap(queue,j,k); GriL< =?t
k = j; kplyZ
} 3:dQN;=
} qwiM.b5
private void fixUp(int k) { 0_,V}
while (k > 1) { pU<->d;->
int j = k >> 1; r#d~($[93
if (queue[j]>queue[k]) OI::0KOv
break;
QU8?/
SortUtil.swap(queue,j,k); DLJu%5F
k = j; `?2S4lN/
} +'y$XR~W {
} `+Wl
fk;
eiJ $}\qJL
} GyRU/0'BME
yLipuMNV
} <Mxy&9}ic
{[NBTT9&
SortUtil: Ycn*aR2
gM^ Hs7o,
package org.rut.util.algorithm; _LCK|H%v'
bt-y6,> +E
import org.rut.util.algorithm.support.BubbleSort; j@&F[ r
import org.rut.util.algorithm.support.HeapSort; 9p9:nx\
import org.rut.util.algorithm.support.ImprovedMergeSort; [8l8m6
import org.rut.util.algorithm.support.ImprovedQuickSort;
" q0lh
import org.rut.util.algorithm.support.InsertSort; Rm&i"
import org.rut.util.algorithm.support.MergeSort; rB<
UOe
import org.rut.util.algorithm.support.QuickSort; |z-A;uL <
import org.rut.util.algorithm.support.SelectionSort; 3tA6r
import org.rut.util.algorithm.support.ShellSort; z|<6y~5,
1<Qb"FN!2
/** ri.;&
* @author treeroot ApG_Gd.
* @since 2006-2-2 Pz:,q~
* @version 1.0 18zv]v
%
*/ o vvR{MTc
public class SortUtil { g-bHf]'
public final static int INSERT = 1; qa.nm4"6+
public final static int BUBBLE = 2; Xt_8=Q
public final static int SELECTION = 3; f)Z$,&
public final static int SHELL = 4; ^"(CZvq
public final static int QUICK = 5; %}J[EV
public final static int IMPROVED_QUICK = 6; J4;w9[a$
public final static int MERGE = 7; l#Ipo5=
public final static int IMPROVED_MERGE = 8; xVfAlN37(
public final static int HEAP = 9; -B* = V
x&@. [FJhO
public static void sort(int[] data) { [U5[;BNRD
sort(data, IMPROVED_QUICK); wa\Yc,R
} qRZv[T%*Q
private static String[] name={ mCb(B48]%X
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "3(""0Q
}; SIYBMe
#^|y0:
private static Sort[] impl=new Sort[]{ EZ:pcnL{
new InsertSort(), HIsIW%B
new BubbleSort(), GL-v</2'U
new SelectionSort(), Tvqq# ;I
new ShellSort(), {p[{5k 0
new QuickSort(),
c@7d4Jz
new ImprovedQuickSort(), zo6|1xq
new MergeSort(), v[{g"C
new ImprovedMergeSort(), m!Cvd9X=
new HeapSort() lqe|1vN
}; H=RzY-\a%
e=Ko4Ao2y
public static String toString(int algorithm){ 6?$yBu9l
return name[algorithm-1]; 1y'8bt~7Pf
} )eIC5>#.
;-sZaU;
public static void sort(int[] data, int algorithm) { "jV:L
impl[algorithm-1].sort(data); IJa6W`}
} q)te/J@
'2Q[g0VR
public static interface Sort { K)b@,/ 5
public void sort(int[] data); A0X'|4I
} JYbsta
x3DUz
public static void swap(int[] data, int i, int j) { f#mNx
int temp = data; :j^IXZW
data = data[j]; y_mTO4\C2
data[j] = temp; ^Gi9&fS,
} corNw+|/w
} Y*VF1M,2_