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。 -QR]BD%J*[
插入排序: ){z#Y#]dP
r%WHYhD
package org.rut.util.algorithm.support; )f8 ;ze
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import org.rut.util.algorithm.SortUtil; >mp Nn
/** g kV`ZT9
* @author treeroot B0Ay
* @since 2006-2-2 cHR*.
* @version 1.0 Nn-k hl|11
*/ dtTfV.y4w
public class InsertSort implements SortUtil.Sort{ J]zhwM
=hd0Ui>x
/* (non-Javadoc) FGie*t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~3%\8,0
*/ {T,}]oX
public void sort(int[] data) { =S6bP<q
int temp; Y~Vc|zM^(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nk_X_y
} Y2tBFeWY
} c`hENPhW
} *JZ9'|v_H
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} ;&f(7 Q+T_
xdDe@G;"
冒泡排序: 1*$6u5.=F
{QmK4(k?|c
package org.rut.util.algorithm.support; @%*@Rar
N!ay#V
import org.rut.util.algorithm.SortUtil; @$L|
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/** +4Wl
* @author treeroot #`U?,>2q
* @since 2006-2-2 y1~
QKz
* @version 1.0 kka{u[ruA
*/ 6/Yo0D>M$
public class BubbleSort implements SortUtil.Sort{ f<$*,P
B0p;Zh
/* (non-Javadoc) u rQvJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X(17ESQ/Y
*/ uOKD#
public void sort(int[] data) { (fr=[m$`
int temp; U(x$&um(l
for(int i=0;i for(int j=data.length-1;j>i;j--){ $FIJI^Kd7
if(data[j] SortUtil.swap(data,j,j-1); 5 8L@:>"
} N+5f.c+S-
} 1:M'|uc
} 23K#9!3
} >gq=W5vN(
@MFEBc}
} [T)>RF
x*tCm8`{
选择排序: jjv'"K2
V4CA*FEA
package org.rut.util.algorithm.support; xiQc\k$
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import org.rut.util.algorithm.SortUtil; W>?aZv
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/** vO"E4s
* @author treeroot =>Z4vWX*
* @since 2006-2-2 s(s_v ?k
* @version 1.0 !Q%r4Nr
*/ *!Gb_!98
public class SelectionSort implements SortUtil.Sort { cFJZ|Ld
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/* 5^l-3s?M
* (non-Javadoc) <; Td8O89_
* qT4`3nH:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dk")/ ib
*/ B=X_c5
public void sort(int[] data) { B%))HLo'
int temp; &?y|Pn
for (int i = 0; i < data.length; i++) { Q'ib7R;V,
int lowIndex = i; QZO<'q`L
for (int j = data.length - 1; j > i; j--) { -%[6q
if (data[j] < data[lowIndex]) { _$HC NFdh
lowIndex = j; ogdAJw6 9
} ^Ga_wJP8S
} LA6Ik_-F
SortUtil.swap(data,i,lowIndex); 7-9HCP
} ashVV~\8A
} abEdZ)$
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} 9N) Ea:N
uIJ
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Shell排序: M[R'
1ahb:Mjv
package org.rut.util.algorithm.support; :O;uP_r9
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import org.rut.util.algorithm.SortUtil; tf9a- s
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/** f-}_
* @author treeroot ]ddL'>$c$
* @since 2006-2-2 [ID#PUle
* @version 1.0 C$v
!emu
*/ 5Ak>/QF9
public class ShellSort implements SortUtil.Sort{ {?IUf~<
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/* (non-Javadoc) ZQ#AE VI,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p!K]c D
*/ "fd'~e$S#
public void sort(int[] data) { <bBgevL+_K
for(int i=data.length/2;i>2;i/=2){ @Z9>E+udQ
for(int j=0;j insertSort(data,j,i); <L3ig%#B
} )VxC v
} l-[5Zl;"
insertSort(data,0,1); *eUxarI
} FWyfFCK
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/** Yp9%u9tNq
* @param data i$'#7U
* @param j -$y/*'
* @param i LO,k'gg<
*/ sH)40QmO{
private void insertSort(int[] data, int start, int inc) { ]-u>HO g\
int temp; JB!KOzw
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =Xb:.
} \YF'qWB
} }cI _$
} 0J9Ub
M4}zRr([.5
} 4:XVu
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快速排序: T:EUI]
Cv1CRmqq%
package org.rut.util.algorithm.support; 1`EkN0iZ
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import org.rut.util.algorithm.SortUtil; X0gWTs
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/** eWAgYe2
* @author treeroot \dc*!Es
* @since 2006-2-2 I r;Z+}4>Y
* @version 1.0 R~&i8n.
*/ ;0`p"T0
public class QuickSort implements SortUtil.Sort{ fKZgAISF
mrz@Y0mgL
/* (non-Javadoc) v<U +&D{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lKF<]25
*/ gELb(Y\ak
public void sort(int[] data) { *=ymK*
quickSort(data,0,data.length-1); HfgK0wIi
} Tx'ctd#Y
private void quickSort(int[] data,int i,int j){ #XlE_XD
int pivotIndex=(i+j)/2; d~b#dcv$"
file://swap kwd)5J
SortUtil.swap(data,pivotIndex,j); *PVv=SU
j,/t<@S>
int k=partition(data,i-1,j,data[j]); ?nAKB5=
SortUtil.swap(data,k,j); %d\|a~p:
if((k-i)>1) quickSort(data,i,k-1); JKsdPW<?
if((j-k)>1) quickSort(data,k+1,j); I^z$0
)bGd++2
} (\6R"2
/** zUhJr$N$
* @param data )tV^)n[w
* @param i `b{.K,
* @param j :>t?^r(
* @return @GiR~bKZ
*/ pH1 9"=p<
private int partition(int[] data, int l, int r,int pivot) { _Vq7Gxy$R
do{ >xt*( j&}
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fii\&p7z
SortUtil.swap(data,l,r); %Jpb&CEY
} F& 'HZX
while(l SortUtil.swap(data,l,r); Q4;br?2H
return l; d">Ya !W
} ]cv|A^
,j ('QvavJ
} fV;&)7d&
[i '\d}
改进后的快速排序: UI4Xv
adJoT-8P6
package org.rut.util.algorithm.support; cg,_nG]i
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import org.rut.util.algorithm.SortUtil; )pVxp]EI
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/** a`w)awb
* @author treeroot [^gSWU
* @since 2006-2-2 Xm`K@hJ@
* @version 1.0 XKsG2>l-W
*/ "*@iXJxv5
public class ImprovedQuickSort implements SortUtil.Sort { Mdh(Mp(w
r[$Qtj Q
private static int MAX_STACK_SIZE=4096; t3/!esay
private static int THRESHOLD=10; A&5$eGe9
/* (non-Javadoc) |jV4]7Luq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 55oLj.l^j
*/ ZUyM:$
public void sort(int[] data) { ?.A6HrAPB
int[] stack=new int[MAX_STACK_SIZE]; p Nu13o~
ftq~AF
int top=-1; }}qR~.[
int pivot; pAmTwe
int pivotIndex,l,r; r/Pg,si
_>5BFQ_
stack[++top]=0; nWZrB s
_
stack[++top]=data.length-1; xiRTp:>
&V( LeSI
while(top>0){ _@jKFDPL
int j=stack[top--]; vS<;:3
int i=stack[top--]; j)F~C8*
@F7QQs3
pivotIndex=(i+j)/2; U(./LrM05
pivot=data[pivotIndex]; ;T52aX
7<.f&1MgI
SortUtil.swap(data,pivotIndex,j); Gz *U?R-T
{/7'uD\
H
file://partition Fr%KO)s2
l=i-1; &8&WY1cU
r=j; u gfV'
do{ v!`M=0k
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); w#b~R^U
SortUtil.swap(data,l,r); 6ldDt?iSg
} r9vC&pWZ
while(l SortUtil.swap(data,l,r); nMc-kyl{
SortUtil.swap(data,l,j); G8oQSo;D
.Yu,&HR
if((l-i)>THRESHOLD){ U |4%ydG
stack[++top]=i; Ra*9d]N@
stack[++top]=l-1; 7SqsVq`[~
} V
u!,tpa.
if((j-l)>THRESHOLD){ L:^'cl}
G
stack[++top]=l+1; |R[m&uOib
stack[++top]=j; "{0kg'fU
} Z=H
fOC
ohh 1DsB
} "1#,d#Q $
file://new InsertSort().sort(data);
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insertSort(data); JqZ%*^O
} Y|lMa?\E
/** G/`_$ c
* @param data (?3(=+t
*/ FP\[7?ZLn
private void insertSort(int[] data) { W4| ;JmT.r
int temp; l`u*,"$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
:D/R
} {"y6l
} rj5:YQEH;
} Sn+Yi
(nzzX?`nY
} C eg6o&^
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归并排序: m 8f_w
lk'RWy"pw
package org.rut.util.algorithm.support; Ar$LA"vu4
1GNAx\(
import org.rut.util.algorithm.SortUtil; l;C_A;y\
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/** u/zfx;K
* @author treeroot >9klh-f
* @since 2006-2-2 HvngjP{>
* @version 1.0 Tld{b
*/ 93rE5eGs
public class MergeSort implements SortUtil.Sort{ *5NffiA}-
npF[J x[
/* (non-Javadoc) Mu%'cwp$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O//e0?]W
*/ Psv!`K
public void sort(int[] data) { _Dv^~e1c
int[] temp=new int[data.length]; v7R&9kU{
mergeSort(data,temp,0,data.length-1); E5dXu5+ye
} ;Cy@TzO/|
8?$2;uGL
private void mergeSort(int[] data,int[] temp,int l,int r){ G1l(
int mid=(l+r)/2; WAEKvM4*i0
if(l==r) return ; Y `{U45
mergeSort(data,temp,l,mid); Z*)<E)
mergeSort(data,temp,mid+1,r); qq`RfZjL
for(int i=l;i<=r;i++){ )0Lq>6j9
temp=data; 'tbb"MEi4
} 4|(?Wt)5
int i1=l; A"'MRYT`
int i2=mid+1; cm]]9z_<
for(int cur=l;cur<=r;cur++){ (gZ!o_
if(i1==mid+1) VtO+=mZV
data[cur]=temp[i2++]; a:fHTU=\p
else if(i2>r) ~JXHBX
data[cur]=temp[i1++]; Vo%d;>!G\;
else if(temp[i1] data[cur]=temp[i1++]; w.8~A,5}Dh
else /\#5\dHj
data[cur]=temp[i2++]; 82X.
} /K^cU;E,
} z)%1 i
ZwMw g t
} ~K9U0ypH
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改进后的归并排序: -)oBh
~laZ(Bma);
package org.rut.util.algorithm.support; {UcItLjY
ng*%1;P
import org.rut.util.algorithm.SortUtil; K288&D|1WU
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/** R%%`wmG)"
* @author treeroot Bu1z$#AC
* @since 2006-2-2 Db=gS=Qm
* @version 1.0 sD8S2
*/ L|X5Ru
public class ImprovedMergeSort implements SortUtil.Sort { Bt,Xe~$z-
vrzX%'
private static final int THRESHOLD = 10; to3J@:V8e
/<0D
E22
/* +&OqJAu
* (non-Javadoc) WM"^#=+$
* vgj^ -
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vi8~j
*/ 8-:k@W
public void sort(int[] data) { ~-5@- V
int[] temp=new int[data.length]; er0D5f R
mergeSort(data,temp,0,data.length-1); j&A3s{S4A
} 0>iFXw:fn
=[JN'|Q+
private void mergeSort(int[] data, int[] temp, int l, int r) { |8 bO5l:
int i, j, k; :OCuxSc%5
int mid = (l + r) / 2; xV#a(>-4
if (l == r) Net)l@IB]
return; vLuQe0l{
if ((mid - l) >= THRESHOLD) ,SF.@^o@a
mergeSort(data, temp, l, mid); xXZKj
else %i8>w:@NW
insertSort(data, l, mid - l + 1); A Vm{#^p[(
if ((r - mid) > THRESHOLD) u!o]Co>
mergeSort(data, temp, mid + 1, r); -l H>8+
else iIaT1i4t.
insertSort(data, mid + 1, r - mid); ti^v%+r1
T[-c|
for (i = l; i <= mid; i++) { vQ"s
temp = data; 5xDN&su
} P0e ""9JOo
for (j = 1; j <= r - mid; j++) { UMuuf6
temp[r - j + 1] = data[j + mid]; Q)`gPX3F
} &_d/ciq1f
int a = temp[l]; :z.Y$]F@
int b = temp[r]; zN+*R;Ds
for (i = l, j = r, k = l; k <= r; k++) { _]xt65TL
if (a < b) { &3Z.
#*
data[k] = temp[i++]; ~59`S#ax/l
a = temp; x
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8
} else { PCPf*G>
data[k] = temp[j--]; ny(GTKoUz
b = temp[j]; 8A^jD(|
} &
8'(
} 6_<s=nTX
} E0eQ9BXh
ZBmXaP[9
/** ~sIGI?5f
* @param data q|o|/ O-{
* @param l <*"pra{3
* @param i f{Fe+iPc
*/ LxlbD#<V
private void insertSort(int[] data, int start, int len) { ]hE+$sKd
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); dA1
C)gLi
} tB7K&ssi
} bug Fl>
} d"I28PIS"
} rjL?eTU"s
oWDSK^
堆排序: v0`qMBr1y
DVl[t8K!
package org.rut.util.algorithm.support; Kr/h`RM
8jggc#.
import org.rut.util.algorithm.SortUtil; =0h|yjnL/
HX3D*2v":
/** %e
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* @author treeroot x^)g'16`
* @since 2006-2-2 o)tKH@`vE
* @version 1.0
l*K I
*/ f4'El2>-86
public class HeapSort implements SortUtil.Sort{ v._Egk0
"[*S?QO(L
/* (non-Javadoc) & =73D1A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QSHJmk 6L
*/ \[hn]@@
public void sort(int[] data) { vZb|!#I
MaxHeap h=new MaxHeap(); 5=Kq@[(4
h.init(data); jq57C}X}2
for(int i=0;i h.remove(); ]6{(Hjt
System.arraycopy(h.queue,1,data,0,data.length); K`Bq(z?/
} #)^^_
}+Rgx@XZ\
private static class MaxHeap{ j?:`-\w5
URYZV8=B~
void init(int[] data){ ]}z'X!v_@
this.queue=new int[data.length+1]; +`;+RDKY*
for(int i=0;i queue[++size]=data; Z+Yeg
fixUp(size); _1>SG2h{fV
} 5vD3K!\u
} .E+OmJwD
I&L.;~
private int size=0; WD15pq l
f).*NX
private int[] queue; $!!R:Wn/R
;>NP.pnA)
public int get() { EjWgaV
return queue[1]; lij B#1<8*
} X<(6T
Q_ctX|.
public void remove() { 8y$5oD6g9
SortUtil.swap(queue,1,size--); vqq6B/r@Fu
fixDown(1); ,-@xq.D
} C<_Urnmn
file://fixdown RX:R*{]-
private void fixDown(int k) { }@d>, 1DU
int j; 9%sFJ
while ((j = k << 1) <= size) { .iFViVZC
if (j < size %26amp;%26amp; queue[j] j++; 5XDgs|8
if (queue[k]>queue[j]) file://不用交换 ^^%JoQ.
break; ~?gzq~~t
SortUtil.swap(queue,j,k); Hi^35
k = j; >-!r9"8@
} Zr=ib
} C1b*v&1{
private void fixUp(int k) { tl|ijR
while (k > 1) { # Mu<8`T-
int j = k >> 1; 7%e1cI
if (queue[j]>queue[k]) gNqAj# m
break; 4sTMgBzw
SortUtil.swap(queue,j,k); lr,q{;
k = j; h\(B#SN
} ML=eL*}l
} vm8$:W2 }
8) HBh7/
} }MP>]8Aq
i0>]CJG
} tAERbiH
<:">mV+/
SortUtil: =NadAyv
[@/ /#}5v
package org.rut.util.algorithm; ! D$Ooamq
[
7g><
import org.rut.util.algorithm.support.BubbleSort; p}uncIod
import org.rut.util.algorithm.support.HeapSort; Q=WySIF.
import org.rut.util.algorithm.support.ImprovedMergeSort; |#k@U6`SG
import org.rut.util.algorithm.support.ImprovedQuickSort; [EKQR>s)
import org.rut.util.algorithm.support.InsertSort; }"|K(hq
import org.rut.util.algorithm.support.MergeSort; .4E&/w+
import org.rut.util.algorithm.support.QuickSort; 3U0`,c\ao*
import org.rut.util.algorithm.support.SelectionSort; Fx2bwut.K
import org.rut.util.algorithm.support.ShellSort; yPal<c
3eF-8Z(f
/** x U4 +|d
* @author treeroot z*!%g[3I
* @since 2006-2-2 NGbG4-w-
* @version 1.0 H5Io{B%=
*/ y2^Y/)
public class SortUtil { =o$sxb
E(
public final static int INSERT = 1; y]f"@9G#
public final static int BUBBLE = 2; 2I,^YWR
public final static int SELECTION = 3; .?loO3 m
public final static int SHELL = 4; >7QvK3S4%
public final static int QUICK = 5; c_4[e5z
public final static int IMPROVED_QUICK = 6; ^y<<>Y'I
public final static int MERGE = 7; y#3j`. $3p
public final static int IMPROVED_MERGE = 8; GJ_7h_4
public final static int HEAP = 9; QD0"rxZJ
?M\{&mlF
public static void sort(int[] data) { 3v1iy/ /
sort(data, IMPROVED_QUICK); ;5659!;
} oY933i@l)P
private static String[] name={ v]B3m
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" G?Q3/y(
}; PoxK{Y
]7Tkkw$
private static Sort[] impl=new Sort[]{ 4b98KsYg
new InsertSort(), iT2B'QI=<
new BubbleSort(), J4fi'
new SelectionSort(), e,W%uH>X
new ShellSort(), NTYg[VTr
new QuickSort(), %H]ptH5
new ImprovedQuickSort(), uM_wjP
new MergeSort(), n[lJLm^(_C
new ImprovedMergeSort(), ^\4h<M
new HeapSort() B><d9d
}; cj$[E]B3V*
UG+d-&~Ll
public static String toString(int algorithm){ 5kCUaPu
return name[algorithm-1]; PoG-Rqe
} e4?>-
Uq^#r iq
public static void sort(int[] data, int algorithm) { zh8nc%X{
impl[algorithm-1].sort(data); Vex{.Vh,"
} Cv6'`",Yzm
: y%d
public static interface Sort { g/CSGIIT
public void sort(int[] data); S[PE$tYT#t
} ;:\<gVi:
|}=acc/
public static void swap(int[] data, int i, int j) { X= 5xh
int temp = data; nn@-W]
data = data[j]; a7r%X -
data[j] = temp; |}BLF
} xhVO3LW'
} QdF5Cwf4