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。 ]<pnHh+2A
插入排序: =*icCng
Y=%SK8]Q;
package org.rut.util.algorithm.support; rcC}4mNe
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import org.rut.util.algorithm.SortUtil; 3
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/** 6hE. i
x
* @author treeroot PP{CK4
* @since 2006-2-2 DA/l`Pn
* @version 1.0 ]8}+%P,Q
*/ M*r/TT
public class InsertSort implements SortUtil.Sort{ m#D+Yh/y{n
t3#My2 =
/* (non-Javadoc) \k#|[d5W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) an4^(SY
*/ ,~R`@5+
public void sort(int[] data) { BVKr 2v
int temp; pzo9?/-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >y2;sJ4]D%
} ]%{.zl!
} BEQ$p)
h
} 8sDbvVh1F
i/&?e+i
} o]&w"3vOP0
P%#EH2J
冒泡排序: 9@Iz:!oqb
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package org.rut.util.algorithm.support; NF}QQwG3
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import org.rut.util.algorithm.SortUtil; $`2rtF
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/** yqy5i{Y
* @author treeroot (1
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* @since 2006-2-2 N2?o6)
* @version 1.0 ~*3obZ2>2
*/ 3'd(=hJ45$
public class BubbleSort implements SortUtil.Sort{ J3]!<v=
V~Zi #o
/* (non-Javadoc) ]x8_f6;D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0!D,74r
*/ L[]*vj
public void sort(int[] data) { fn%Gu s~
int temp; u|!On
for(int i=0;i for(int j=data.length-1;j>i;j--){ jRswGMx
if(data[j] SortUtil.swap(data,j,j-1); &C~R*
} CQf<En|1
} 9`"o,wGX3
} tQSj[Yl
} Qy)+YhE
4%8}vCs
} =!axQ[)A
Zz" b&`K
选择排序: kOe%w-_
DCJmk6p%0
package org.rut.util.algorithm.support; ]s*Fs]1+H
7eQE[C
import org.rut.util.algorithm.SortUtil; j\^0BTZ
T 4}SF
/** xW$F-n
* @author treeroot ]=s!cfu
* @since 2006-2-2 o/EN3J
* @version 1.0 dDuT,zP
*/ M18H1e@Al
public class SelectionSort implements SortUtil.Sort { Cm~h\+"
\9U4V>p
/* y8Q96zi
* (non-Javadoc) =h?Q.vad
* 49)A.Bh&!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @%4MFc0`!
*/ L53qQej<
public void sort(int[] data) { Q^^.@FU"x
int temp; \5+?wpH
for (int i = 0; i < data.length; i++) { b-/zt Z@u
int lowIndex = i; A)5-w`1
for (int j = data.length - 1; j > i; j--) { 4=j,:q
if (data[j] < data[lowIndex]) { Fq{Z-yVp
lowIndex = j; j3Ng] @N
} #RE
} _eB?G
SortUtil.swap(data,i,lowIndex); f@ &?K<
} 64Ot`=A"
} lpW|GFG
)$V &Nf
} vepZod}D
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Shell排序: ;5wmQFr
z|Z<S+=f
package org.rut.util.algorithm.support; &cjE+
=)56]ki}
import org.rut.util.algorithm.SortUtil; U'pm5Mc\q
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/** tEz6B}
* @author treeroot P;&rh U^[
* @since 2006-2-2 <Tq&Va_w
* @version 1.0 -Cb<T"7
*/ aR }|^ex
public class ShellSort implements SortUtil.Sort{ M`W%nvEDE
(S:+#v
/* (non-Javadoc) 4dDDi,)U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F^5<o
*/ u3!aKXnv<
public void sort(int[] data) { rm7$i9DH2
for(int i=data.length/2;i>2;i/=2){ &&iZ?JteZ
for(int j=0;j insertSort(data,j,i); jTNfGu0x
} GCxtW FXH
} _Qy3A T~
insertSort(data,0,1); =AFTB<7-^
} +/ A`\9QT
tK<GU.+
/** +k!Y]_&(:f
* @param data 9aLS%-x!+
* @param j &G5=?ub
* @param i Evz;eobW/
*/ x+V;UD=mH
private void insertSort(int[] data, int start, int inc) { >U~B"'!xV
int temp; ?[4!2T,Ca
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #+V5$
} cD-.thHO
} A>"v1Wk
} 4(aDi;x "w
zE{@'
} ;T0Y=yC
c#qOK
快速排序: !Jo3>!,j
dzYB0vut@
package org.rut.util.algorithm.support; 39;Z+s";
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import org.rut.util.algorithm.SortUtil; Te%'9-jk
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/** I0 y+,~\
* @author treeroot ICNS+KsI
* @since 2006-2-2 @=[/bG
* @version 1.0 Gt&x<
*/ o.tCw\M$g
public class QuickSort implements SortUtil.Sort{ !B==cNq
xF)AuGdp\
/* (non-Javadoc) mU1lEx$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )k F/"'o
*/ CPq{M.B
public void sort(int[] data) { L[zg2y
quickSort(data,0,data.length-1); eSZS`(#!(
} B;'Dh<J1
private void quickSort(int[] data,int i,int j){ *|n::9
int pivotIndex=(i+j)/2; { 7y.0_Y
file://swap P5;LM9W
SortUtil.swap(data,pivotIndex,j); t<O5_}R%d
w=I'
CMRt
int k=partition(data,i-1,j,data[j]); ;!4Bw"Gg
SortUtil.swap(data,k,j); aa<9%j
if((k-i)>1) quickSort(data,i,k-1); ~Mv@Bl
if((j-k)>1) quickSort(data,k+1,j); GS |sx
T`g.K6$b
} r3o_mO?X
/** L&1VPli
* @param data ; Xy\7tx
* @param i s)$N&0\
* @param j EG5'kYw2
* @return $'3`$
*/ nG;wQvc
private int partition(int[] data, int l, int r,int pivot) { LOyL:~$
do{ xq:.|{HUk
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <dx
xXzLT
SortUtil.swap(data,l,r); _//)|.6c3
} bWv4'Y!p
while(l SortUtil.swap(data,l,r); -If-c'"G
return l; DSY:aD!
} U^4
/rbQ
SCl$+9E
} ./@!k[
#n^P[Zw
改进后的快速排序: -bHQy:
YmM+x=G:
package org.rut.util.algorithm.support; ]%I cUd}
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import org.rut.util.algorithm.SortUtil; @sly-2{e1
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/** ~LPxVYhK
* @author treeroot ~\tI9L?|A
* @since 2006-2-2 -;_`>OU{
* @version 1.0 r]eeKV,{p
*/ >9c$2d|>
public class ImprovedQuickSort implements SortUtil.Sort { ]!J 6S.@#+
@SA*7[?P
private static int MAX_STACK_SIZE=4096; PF@+~FI
private static int THRESHOLD=10; vS-k0g;
/* (non-Javadoc) ._m+@Uy]H}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Mgx5d
*/ :mLcb.E
public void sort(int[] data) { C=ni5R
int[] stack=new int[MAX_STACK_SIZE]; ua1ov7w$]
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int top=-1; <va3L y)c&
int pivot; I0 a,mO;m
int pivotIndex,l,r; v8"plx=3
\P]w^
stack[++top]=0; >ir'v5
stack[++top]=data.length-1; M:|Z3p K
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while(top>0){ J#B%
#X
int j=stack[top--]; {S(d5o8
int i=stack[top--]; E4RvVfA0F
c6sGjZdR
pivotIndex=(i+j)/2; zyTP|SXk
pivot=data[pivotIndex]; >*H>'O4
2't<Hl1qN
SortUtil.swap(data,pivotIndex,j); cZKK\hf<
!=@Lyt)_b
file://partition S!qJqZ<Bv
l=i-1; `k65&]&d
r=j; b:/ ;
do{ {J q[N}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T;jp2 #
SortUtil.swap(data,l,r); kM5N#|!
} kH1hsDe|&y
while(l SortUtil.swap(data,l,r); ";38vjIV
SortUtil.swap(data,l,j); YQOdwcLG
J@Eqqyf"
if((l-i)>THRESHOLD){ R0y={\*B5k
stack[++top]=i; KE:PRX
stack[++top]=l-1; T1hr5V<U
} /*g3TbUs
if((j-l)>THRESHOLD){ WyVFhAuU
stack[++top]=l+1; Eq^k @
stack[++top]=j; (Da/$S.
} / <WB%O
\|nF55W [
} a'f"Zdh%w
file://new InsertSort().sort(data); . $uvQpyh
insertSort(data); ')t
:!#
} }$3eRu +
/** 6 ]W!>jDc
* @param data #k8bZ?*:
*/ C4],7"Sw
private void insertSort(int[] data) { xRYL{+
int temp; t9SzZ2E
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C{!L +]/
} Mit,X
} V%'`nJ!
} pDb5t>
'gk.J
} B
PTQm4TN
PHl{pE*
归并排序: &=H{ 36i@
%"PG/avo
package org.rut.util.algorithm.support; s42M[BW]
,~8:^*0s
import org.rut.util.algorithm.SortUtil; !/+ZKx("9
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/** q\ FF)H
* @author treeroot ES!$JWK|
* @since 2006-2-2 Ov"]&e(I[
* @version 1.0 PE3FuJGz
*/ Mg;%];2Nt
public class MergeSort implements SortUtil.Sort{ $Z6g/bD`E
mZ
39 s
/* (non-Javadoc) % eWzr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ia
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*/ !!Z#'Wq
public void sort(int[] data) { 4s nL((
int[] temp=new int[data.length]; =LV7K8FSd
mergeSort(data,temp,0,data.length-1); ;EbGW&T
} 3Yf&F([t
Ig75bZz
private void mergeSort(int[] data,int[] temp,int l,int r){ occ^bq
int mid=(l+r)/2; T%~w~stW
if(l==r) return ; I&~kwOP
mergeSort(data,temp,l,mid); \Zz"%i
mergeSort(data,temp,mid+1,r); z+I'N4*^
for(int i=l;i<=r;i++){ G 'IqAKJ
temp=data; [G2@[CtY1
} rF:C({y
int i1=l; z(2pl}
int i2=mid+1; <+ UEM~)
for(int cur=l;cur<=r;cur++){ qd#?8
if(i1==mid+1) qp_lMz
data[cur]=temp[i2++]; .gTla
else if(i2>r) kcKcIn{
data[cur]=temp[i1++]; \"Z^{Y[,;
else if(temp[i1] data[cur]=temp[i1++]; &<6E*qM
else *,<A[XP
data[cur]=temp[i2++]; vdw5T&Q{{C
} z<aB GG
} D/)wg$MI
l+!!S"=8)~
} KBJw7rra
&5puGnTZ
改进后的归并排序: [P.M>"c\
wBZ=IMDu\
package org.rut.util.algorithm.support; k#Qav1_
>QO^h<.>
import org.rut.util.algorithm.SortUtil; )3# gpM
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/** X{4jyi-<
* @author treeroot /a.4atb0
* @since 2006-2-2 |f), dC
* @version 1.0 |U{9Yy6p
*/ |{W4JFKJ
public class ImprovedMergeSort implements SortUtil.Sort { ly"Jl8/<
pgbm2mT9
private static final int THRESHOLD = 10;
0$)s? \
EdFCaW}""
/* >KHR;W 03
* (non-Javadoc) 0/K?'&$yvb
* u3 k%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <knf^D<"
*/ $/;D8P5/&=
public void sort(int[] data) { 0WT]fY?IS
int[] temp=new int[data.length]; a (AKVk\
mergeSort(data,temp,0,data.length-1); ]D?//
} ta"uxL\gge
J1OZG6|e
private void mergeSort(int[] data, int[] temp, int l, int r) { G8=2=/ !
int i, j, k; e??tp]PLn
int mid = (l + r) / 2; ~C[p}MED
if (l == r) m>yb}+
return; },58B
if ((mid - l) >= THRESHOLD) -e<d//>
mergeSort(data, temp, l, mid); k(LZ,WSR
else HJ#3wk "W
insertSort(data, l, mid - l + 1); ,/0Q($oz
if ((r - mid) > THRESHOLD) $A~UA
mergeSort(data, temp, mid + 1, r); zVN/|[KP4
else GL;@heP
insertSort(data, mid + 1, r - mid); y/=:F=H@w
Gk_%WY*
for (i = l; i <= mid; i++) { 58xaVOhb
temp = data; O/g|E47
} p3tu_If
for (j = 1; j <= r - mid; j++) { DV+M;rs
temp[r - j + 1] = data[j + mid]; ?bFP'.
} k1tJ$}
int a = temp[l]; X&C&DTB
int b = temp[r]; j("$qpv
for (i = l, j = r, k = l; k <= r; k++) { vJZ0G:1
if (a < b) { 8vQGpIa,
data[k] = temp[i++]; \H<gKZquR
a = temp; >,c$e' h
} else { - 7MR2)U
data[k] = temp[j--]; wEju`0#;
b = temp[j]; O-m=<Fk>
D
} -& Qm"-?:
} t^_0w[
} V{!fag
#yNSQd
/** Br/qOO:n$}
* @param data u.v
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* @param l _N8Tu~lqV
* @param i *R9s0;&:
*/ be&5vl
private void insertSort(int[] data, int start, int len) { L8OW@)|
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6Gt~tlt:L
} 9%fd\o@X
} oCtg{*vp
} )ph**g
} L1J \C
/V'^$enK!}
堆排序: U@t"o3E
$DPMi9,7^
package org.rut.util.algorithm.support; /|7@rH([{
tW<i;2 l
import org.rut.util.algorithm.SortUtil; 2n]UNC
}YV,uJH[
/** !`kX</ha.
* @author treeroot 7#
>;iGuz
* @since 2006-2-2 %v}SJEXFp
* @version 1.0 ggluQGA
*/ 2_S%vA<L
public class HeapSort implements SortUtil.Sort{ 2MT_5j5[N
lT.Q)(
/* (non-Javadoc) x"g-okLN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BdWRm=
*/ sk'<K5~
public void sort(int[] data) { m7<HK,d
MaxHeap h=new MaxHeap(); dA,irb I0W
h.init(data); %>,B1nt
for(int i=0;i h.remove(); F;
upb5
System.arraycopy(h.queue,1,data,0,data.length); zzlqj){F
} jbQ N<`!
XKp$v']u
private static class MaxHeap{ E`E$ }iLs
s|40v@M
void init(int[] data){ |W't-}yf
this.queue=new int[data.length+1]; }iGpuoXT`
for(int i=0;i queue[++size]=data; @|I:A
fixUp(size); R$>]7-N}
} @ P:b\WCI
} 0[A4k:
{;:QY1QT
private int size=0; 48}L!m @
cb36 ~{
private int[] queue; P:~Xaz\F
XOOWrK7O
public int get() { NxOiT#YH
return queue[1]; M.DU^-7
} J#k3iE}
'(ZJsw
public void remove() { Mn)>G36(
SortUtil.swap(queue,1,size--); Oup5LH!sW
fixDown(1); p#14
} 8PN/*Sa
file://fixdown 0P MF)';R
private void fixDown(int k) { "zN2+X"&
int j; :ik$@5wp
while ((j = k << 1) <= size) { L#
if (j < size %26amp;%26amp; queue[j] j++; yQP!Vt^
if (queue[k]>queue[j]) file://不用交换 `/|S.a#g
break; 7!-3jU@m
SortUtil.swap(queue,j,k); %:jVx
k = j; 2X];zY
} 2/*F}w/
} #9R[%R7Nz
private void fixUp(int k) { I
JPpF`
while (k > 1) { o0yyP,?yh
int j = k >> 1; v~l_6V}
if (queue[j]>queue[k]) *
':LBc=%
break; *.'9 eC0s
SortUtil.swap(queue,j,k); F'v3caE
k = j; A~2U9f+\
} t>f61<27eB
} FWi c/7
g&79?h4UXQ
} q5Bj0r[/o
,5Vc
} >rbHpLm1`
8Ce|Q8<8]
SortUtil: y15 MWZ
$`KddW0_
package org.rut.util.algorithm; KC"#
%1Ex{H hb
import org.rut.util.algorithm.support.BubbleSort; L&gC
import org.rut.util.algorithm.support.HeapSort; NZu\ Ae
import org.rut.util.algorithm.support.ImprovedMergeSort; s!lLdR[g
import org.rut.util.algorithm.support.ImprovedQuickSort; %NyV2W=~X
import org.rut.util.algorithm.support.InsertSort; 3CKd[=-Z
import org.rut.util.algorithm.support.MergeSort; d65fkz==A)
import org.rut.util.algorithm.support.QuickSort; S_Tv Ix/7&
import org.rut.util.algorithm.support.SelectionSort; X2RM*y|
import org.rut.util.algorithm.support.ShellSort; /0S2Omh
<>|&%gmz
/** DGs=.U-=e
* @author treeroot {S9't;%]
* @since 2006-2-2 WFGcR9mN?
* @version 1.0 ">8]Oi;g
*/ /J0YF
public class SortUtil { i8h(b2odQ
public final static int INSERT = 1; r>>4)<C7J
public final static int BUBBLE = 2; U~;Rzoe)q*
public final static int SELECTION = 3; 0Q>yv;M
public final static int SHELL = 4; 2H,^i,
public final static int QUICK = 5; sIVVF#0}]
public final static int IMPROVED_QUICK = 6; Q140b;Z
public final static int MERGE = 7; z~O#0Q!
public final static int IMPROVED_MERGE = 8; v?s]up @@h
public final static int HEAP = 9; BLepCF38
8+7n"6GY2/
public static void sort(int[] data) { Q3@MRR^tY
sort(data, IMPROVED_QUICK); X0QY:?
} wgN)*dpuI
private static String[] name={ P#8+GN+bF
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" aEO`` W
}; 4R c_C0O
3?}\Hw
private static Sort[] impl=new Sort[]{ ;^[VqFpeS
new InsertSort(), UQ7E7yY#
new BubbleSort(), vb&1 S
new SelectionSort(), =XRTeIZ
new ShellSort(), TO,XN\{y
new QuickSort(), o@6hlLr
new ImprovedQuickSort(), gv6}GE
new MergeSort(), Zb \E!>V
new ImprovedMergeSort(), IIZu&iZo\
new HeapSort() wsfN \6e
}; |9fvj6?Y
t PJW|wo
public static String toString(int algorithm){ H3}eFl=i2
return name[algorithm-1]; hJ)\Vo
} 7EfLd+
=6sA49~M
public static void sort(int[] data, int algorithm) { +i\ +bR
impl[algorithm-1].sort(data); A`#/:O4|f
} 7Gos-_s
>V01%fLd
public static interface Sort { I^u$H&
public void sort(int[] data); ~ z< &vQ=
} #`g..3ey
E$4_.Z8sRw
public static void swap(int[] data, int i, int j) { |vGb,&3
int temp = data; (Yv )%2
data = data[j]; "X[sW%# F
data[j] = temp; Dc1tND$X3g
} MV(Sb:RZ
} FX->_}kL=