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。 $4ZjN N@
插入排序: 3JJEj1O
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package org.rut.util.algorithm.support; #<*=) [
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import org.rut.util.algorithm.SortUtil; ziTE*rNJ
/** 2{;~Bgd
* @author treeroot EwX:^1f
* @since 2006-2-2 _my!YS5n
* @version 1.0 xh`4s
*/ Rw!wfh_+
public class InsertSort implements SortUtil.Sort{ p38RgEf
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/* (non-Javadoc) eRm 9LOp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =Hf`yH\#
*/ YM.Q?p4g
public void sort(int[] data) { *1c1XN<7
int temp; q)rxv7Iu\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Yx"un4
} M>g%wg7Ah
} l:- <CbG
} |$+
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} mGP&NOR0^y
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冒泡排序: u%b.#!
|kK_B
:K
package org.rut.util.algorithm.support; 9AP." RV
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import org.rut.util.algorithm.SortUtil; AXT(D@sI=
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/** =" ;G&)H-
* @author treeroot iOXsj
* @since 2006-2-2 BBDt^$
* @version 1.0 88g|(k/
*/ Scd_tw.]|
public class BubbleSort implements SortUtil.Sort{ pKNrEq
oxZXY]$y
/* (non-Javadoc) v\3$$T)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D/&nEMp6
*/ S pIdw0
public void sort(int[] data) { KvY1bMU!
int temp; +[Bl@RHe^
for(int i=0;i for(int j=data.length-1;j>i;j--){ B2T=O %
if(data[j] SortUtil.swap(data,j,j-1); d:3OC&
} 6Ij'z9nJw
} :R1F\FT*
} nh*hw[Ord
} L['g')g.
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} "1z#6vw5a
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选择排序: cxz\1Vphd
]=vRjw
package org.rut.util.algorithm.support; ):Pzsz7
TrR=3_;.7
import org.rut.util.algorithm.SortUtil; Dks"(0g
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/** b*TQKYT
* @author treeroot f^|r*@o
* @since 2006-2-2 bsv!z\}
* @version 1.0 %`\=qSf*
*/ cP^c}e*;NS
public class SelectionSort implements SortUtil.Sort { w,1&s};g\
wo5fGQJ
/* RC~ C}
* (non-Javadoc) tJII-\3"
* e'T|5I0K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x:iLBYf
*/ O&evv8 6L
public void sort(int[] data) { !0X/^Xv@=
int temp; a[ yyEgm2
for (int i = 0; i < data.length; i++) { W.nr&yiQ
int lowIndex = i; !SdP<{[
for (int j = data.length - 1; j > i; j--) { #n.XOet<\
if (data[j] < data[lowIndex]) { -+fW/Uo
lowIndex = j; K;*B$2Z#k
} Y3g<%6
} 6kHuKxY,
SortUtil.swap(data,i,lowIndex); NX8.
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} K$c?:?wmo
} 8+Abw)]s
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} WZN0`Od
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Shell排序: +2,EK
G]T&{3g-.
package org.rut.util.algorithm.support; PQXCT|iJ
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import org.rut.util.algorithm.SortUtil; .5!Q(
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/** ~\u~>mtchu
* @author treeroot eE" *c>I
* @since 2006-2-2 M3s:B& /
* @version 1.0 wit
*/ T/P
public class ShellSort implements SortUtil.Sort{ ZM_-g4[H
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/* (non-Javadoc) \L"0Pmt[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q1RUmIe_&
*/ Sr+ &
public void sort(int[] data) { V(M7d>N5G
for(int i=data.length/2;i>2;i/=2){ Dv}VmC""
for(int j=0;j insertSort(data,j,i); h3V;
J
} @+hO,WXN
} :oytJhxU
insertSort(data,0,1); ,e{1l
} pt%Y1<9Eh?
QJ,~K&?
/** a 1~@m[
* @param data OQ+kOE&
* @param j }i52MI1-XP
* @param i :8Ugz ~i
*/ !_?#f|
private void insertSort(int[] data, int start, int inc) { p{;FO?
int temp; ;eC8|
Xz
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @gi / 1 cq
} RpzW-
} 3-_`x9u*
} iz2;xa*
Tz{-L%*#
} Oe&gTXo
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快速排序: y|(?>\jBl
d[sY]_ dj
package org.rut.util.algorithm.support; nxs'qX(D
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import org.rut.util.algorithm.SortUtil; ^"+Vx9H"{
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/** (
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* @author treeroot !DXK\,;>
* @since 2006-2-2 +krDmU9(
* @version 1.0 lz(}N7SLa
*/ zRgl`zREr
public class QuickSort implements SortUtil.Sort{ ~y1k2n
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/* (non-Javadoc) B1 xlWdm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oI x!?,1
*/ #{zF~/Qq
public void sort(int[] data) { +,J!xy+~,
quickSort(data,0,data.length-1); h 2C9p2.
} ]Mj N)%hT
private void quickSort(int[] data,int i,int j){ @O
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int pivotIndex=(i+j)/2; 1
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file://swap J:0`*7
SortUtil.swap(data,pivotIndex,j); #X*=oG
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int k=partition(data,i-1,j,data[j]); vzZ"TSP
SortUtil.swap(data,k,j); 9KMtPBZ
if((k-i)>1) quickSort(data,i,k-1); goc"+K
if((j-k)>1) quickSort(data,k+1,j); >C -N0H
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} #z9@x}p5g
/** yOyuMZo6
* @param data #XeabcOQ
* @param i =8EGB\P
* @param j zJG=9C?
* @return [#/@v/`
*/ 'V}4_3#q
private int partition(int[] data, int l, int r,int pivot) { p~dj-w
do{ YH{FTVOt{C
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); IvM>z03
SortUtil.swap(data,l,r); Yn8aTg[J
} ;% 4N@Z
while(l SortUtil.swap(data,l,r); ykNPKzW:
return l; 2UEjn>2
} FyA0"
yGlOs]>n
} t#=FFQOt
dA$qzQ
改进后的快速排序: z&Lcl{<MA
Mgg m~|9)
package org.rut.util.algorithm.support; )OV2CP
YI),yj
import org.rut.util.algorithm.SortUtil; ?9;r|G
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/** W_h!Puj_
* @author treeroot yQquGu
* @since 2006-2-2 8Xz \,}$O
* @version 1.0 $ cYKVhf
*/ @fI2ZWN|
public class ImprovedQuickSort implements SortUtil.Sort { wQN/MYF[
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private static int MAX_STACK_SIZE=4096; a f UOIM
private static int THRESHOLD=10; q 1+{MPJ
/* (non-Javadoc) 9v(k<('_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S"Drg m.
*/ OLyl.#J
public void sort(int[] data) { oPR?Ar
int[] stack=new int[MAX_STACK_SIZE]; Pe?b#
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int top=-1; 7^DN8g"&\
int pivot; HMVyXulU
int pivotIndex,l,r; >d$Sh`a6
#>O>=#Q
stack[++top]=0; &\AW}xp
stack[++top]=data.length-1; ZUaqv
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while(top>0){ 0 LIRi%N5*
int j=stack[top--]; S/x CX!
int i=stack[top--]; Mt%=z9OLq9
lAo S 9w
pivotIndex=(i+j)/2; ++Fk8R/$U[
pivot=data[pivotIndex]; /@+[D{_Fw
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SortUtil.swap(data,pivotIndex,j); ?a'P;&@7
]%I|C++0
file://partition 3nX={72<b
l=i-1; _BBs{47{E
r=j; oE'Flc.
do{ 2t`d.s=
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); lW3wmSWn%
SortUtil.swap(data,l,r); m-XS_5x\
} Pze{5!
while(l SortUtil.swap(data,l,r); Z'o'd_g>I+
SortUtil.swap(data,l,j); Q7XlFjzcm
Fps:6~gD
if((l-i)>THRESHOLD){ L3y`*&e>
stack[++top]=i; J|:Zs1.<d
stack[++top]=l-1; }<g-0&GLm
} )A:|8m
if((j-l)>THRESHOLD){ y rmi:=N(
stack[++top]=l+1; 9\KMU@Ne
stack[++top]=j; zoHFTD4 g
} 8 ;o*c6+
4-Cca
} =SLCG.
file://new InsertSort().sort(data); w}r~Wk^dLI
insertSort(data); zM!2JC
} )m.U"giG++
/** m!_*Q
* @param data ]]8^j='P'
*/ a F%V
private void insertSort(int[] data) { *W$bhC'w
int temp; ZCz#B2Sf8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \2VYDBi?|
} N=~aj7B%
} E% d3}@
} jC_m0Iwc
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} *g!7PzJ'
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归并排序: 98LyzF9
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package org.rut.util.algorithm.support; F7 IZ;4cp
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import org.rut.util.algorithm.SortUtil; D'<'"kUd
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/** 55Ag<\7
* @author treeroot xvTz|Y
* @since 2006-2-2 YG
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* @version 1.0 =gQ^,x0R9
*/ -)Of\4kx
public class MergeSort implements SortUtil.Sort{ a<CACWsN.T
= ow=3Ku
/* (non-Javadoc) tzrvIVD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }0~X)Vgm(
*/ M*2
Nq=3
public void sort(int[] data) { *I9O+/,
int[] temp=new int[data.length]; -T{G8@V0I
mergeSort(data,temp,0,data.length-1);
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} 6o<(,\ad[
a9y+FCA
private void mergeSort(int[] data,int[] temp,int l,int r){ >p
9~'
int mid=(l+r)/2; oMHTB!A=2
if(l==r) return ; {fa3"k_ke
mergeSort(data,temp,l,mid); 52t6_!y+V
mergeSort(data,temp,mid+1,r); ,)ZI&BL5
for(int i=l;i<=r;i++){ ;"|QW?>$D
temp=data; P(cy@P,D
} Fx )BMP
int i1=l; /X%+z5
int i2=mid+1; %uDH_J|^
for(int cur=l;cur<=r;cur++){ Mh~E]8b
if(i1==mid+1) 45;ey }8
data[cur]=temp[i2++]; wEC,Mbn
else if(i2>r) <.hutU*1
data[cur]=temp[i1++]; pT/z`o$#V
else if(temp[i1] data[cur]=temp[i1++]; :f~qt%%/
else DB3qf>@?
data[cur]=temp[i2++]; n&3}F?
} gUY~
l= c
} ||4T*B06
S? #6{rx
} 5i+cjT2
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改进后的归并排序: 9;NXzO27
p0hE`!
package org.rut.util.algorithm.support; lBGYZ--
hkMVA
import org.rut.util.algorithm.SortUtil; 1Eb2X}XC
nF$HWp>
/** ?AK`M #M
* @author treeroot /xj`'8
* @since 2006-2-2 +QNsI2t;r
* @version 1.0 ^h^.;Iqr=
*/ ,B'fOJ.2
public class ImprovedMergeSort implements SortUtil.Sort { _@W1?;yD
SEVB.;
private static final int THRESHOLD = 10; A9;,y'm^8
KD.|oo
/* S%aup(wu6
* (non-Javadoc) EjMVlZC>
* y%?'<j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p6!5}dD(
*/ D -d
public void sort(int[] data) { 0TZB}c#qT
int[] temp=new int[data.length]; &gKDw!al
mergeSort(data,temp,0,data.length-1); F?[1m2
} .f"1(J8
)/)[}wN;j
private void mergeSort(int[] data, int[] temp, int l, int r) {
sC0u4w>Y
int i, j, k; 4}s'xMT!
int mid = (l + r) / 2; V~p01f"J
if (l == r) |1zfXG,R
return; lV$CBS
if ((mid - l) >= THRESHOLD) 9p{n7.
mergeSort(data, temp, l, mid); JOJuGB-d
else \Y>b#*m(4
insertSort(data, l, mid - l + 1); Q6D>(H#"0
if ((r - mid) > THRESHOLD) *@p"
mergeSort(data, temp, mid + 1, r); m2"wMt"*V
else 4.^T~n G
insertSort(data, mid + 1, r - mid); _QEw=*.<
n_Qua|R
for (i = l; i <= mid; i++) { qYJ<I'Ux O
temp = data; bX$1PYX
} |'z24 :8
for (j = 1; j <= r - mid; j++) { NyT%S?@y<
temp[r - j + 1] = data[j + mid]; g?Tev^D
} 6 &0r/r
int a = temp[l]; zyhM*eM.7
int b = temp[r]; )z\#
for (i = l, j = r, k = l; k <= r; k++) { uAqiL>y
if (a < b) { Rk7F;2
data[k] = temp[i++]; _ xTpW
a = temp; x"g)pGsT
} else { g'b|[ q
data[k] = temp[j--]; g(W+[kj)
b = temp[j]; yQMwt|C4
} 2]Il:>n,
} <D3mt Q
} qB (Pqv
D =mmBo
/** G{]RC^Zo
* @param data ,h*N9}xYTi
* @param l mvK^')
* @param i 9I]Bt=2z
*/ YLi6GY
private void insertSort(int[] data, int start, int len) { |T@SlNi]
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Jw8?o/1D@
} ]95VMyN
} )~)l^0X
} Y|><Ls6Q
} ij;NM:|Sd
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堆排序: E&
i (T2c
fs 2MYat
package org.rut.util.algorithm.support; Bh'fkW3
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import org.rut.util.algorithm.SortUtil; wpuK?fP
7)V"E-6h
/** l[c '%M |N
* @author treeroot s$isDG#Sr
* @since 2006-2-2 e)n ,Y
* @version 1.0 &TBFt;
*/
j!>P7 8
public class HeapSort implements SortUtil.Sort{ I51]+gEN
Or.u*!od&
/* (non-Javadoc) yy=hCjQ)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'k[qx}
*/ pQBn8H|Y
public void sort(int[] data) { d/
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MaxHeap h=new MaxHeap(); j=irx5:
h.init(data); G|f9l?p
for(int i=0;i h.remove(); wQUl!s7M;
System.arraycopy(h.queue,1,data,0,data.length); FHQ`T\fC$@
} TPJF?.le
'
p"p~Bx
private static class MaxHeap{ yiQ ?p:DM
&L$9Ii
void init(int[] data){ ?iP7Ki
this.queue=new int[data.length+1]; f(w>(1&/B
for(int i=0;i queue[++size]=data; B223W_0"o
fixUp(size); @!fUp
b
} KJ'ID
} bh1$
A
W+!UVUpW
private int size=0; P-Y_$Nv0g
/S"jO[n9b
private int[] queue; "u7[[.P)
PiKP.
public int get() { #j~FlY5
return queue[1]; Pl/ dUt_
} z;>$["t]6
Sc[#]2 }
public void remove() { !6'N-b1
SortUtil.swap(queue,1,size--); X?'cl]1?
fixDown(1); ML905n u
} /%& d:
file://fixdown BS##nS-[
private void fixDown(int k) { oN,1ig
int j; 0qJ (RB
while ((j = k << 1) <= size) { ~|}]
if (j < size %26amp;%26amp; queue[j] j++; gPKf8{#%e
if (queue[k]>queue[j]) file://不用交换 +-@n}xb@
break; nXRa_M(z8
SortUtil.swap(queue,j,k);
[Jt}^
k = j; 1 jidBzu<
} cpjwc@UMe
} cb9-~*1
private void fixUp(int k) { +-<G(^
while (k > 1) { 9S|sTf
int j = k >> 1; l)[|wPf
if (queue[j]>queue[k]) 1<BKTMBq?{
break; $z%(He
SortUtil.swap(queue,j,k); P?h1nxm`'
k = j; ?@G s7'
} !l
$d^y345
} Zt!# KSF7%
+^Xf:r`
G
} lr>NG,N
=-si|
1Z
} <YU?1y?V
@njNP^'Kx
SortUtil: 2o?j{K
u8zL[]>
package org.rut.util.algorithm; Km(i}:6"
;W?#l$R
import org.rut.util.algorithm.support.BubbleSort; ;gZ
^c]\
import org.rut.util.algorithm.support.HeapSort; nEsD+}E?
import org.rut.util.algorithm.support.ImprovedMergeSort; Nnh\FaI
import org.rut.util.algorithm.support.ImprovedQuickSort; "'z}oS
import org.rut.util.algorithm.support.InsertSort; i=xh;yb|
import org.rut.util.algorithm.support.MergeSort; U*C^g}iA
import org.rut.util.algorithm.support.QuickSort; :|W=2(>
import org.rut.util.algorithm.support.SelectionSort; PGP#$JC
import org.rut.util.algorithm.support.ShellSort; ni ?k' \\
\AwkK3
/** unFRfec{
* @author treeroot ;TJpD0
* @since 2006-2-2 UOZ+&DL,L
* @version 1.0 6MVu"0#
*/ vu+g65"
public class SortUtil { KmNnW1T
public final static int INSERT = 1; =5\*Zh1
public final static int BUBBLE = 2; Jo {:]:
public final static int SELECTION = 3; b{<?E };%
public final static int SHELL = 4; Yg8*)u0
public final static int QUICK = 5; H'k}/<%Q
public final static int IMPROVED_QUICK = 6; 9-pt}U
public final static int MERGE = 7; n2K1X!E$
public final static int IMPROVED_MERGE = 8; =%m{|HQ`
public final static int HEAP = 9; +aOdaNcI
M@xU59$@
public static void sort(int[] data) { wtYgHC}X
sort(data, IMPROVED_QUICK); ~M}{rl.n=
} 6B?jc/V.R
private static String[] name={ @R5^J{T
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" q!c=f!U?\l
};
5_;-Qw
G!6b
)4L-
private static Sort[] impl=new Sort[]{ |6Q5bV
new InsertSort(), xF[%R{Mn'
new BubbleSort(), WML--<dU
new SelectionSort(), ii?T:T@
new ShellSort(), U823q-x
new QuickSort(), xh2r?K@k>
new ImprovedQuickSort(), 4k225~GQ:C
new MergeSort(), G[>NP#P
new ImprovedMergeSort(), _f^6F<!
new HeapSort() Rf!v{\
}; KUJ Lx
%+l95Dv1
public static String toString(int algorithm){ n[Q(q[ULV
return name[algorithm-1]; b=5w>*
} UQu6JkbLL
osXEzr(
public static void sort(int[] data, int algorithm) { /0/ouA>+
impl[algorithm-1].sort(data); z,aMbgt
} 8{ZTHY-
JQQ[jl;
public static interface Sort { pWxk^qhe/
public void sort(int[] data); +mWf$+w
} xq((]5P y
h^ Cm\V
public static void swap(int[] data, int i, int j) { 1'o[9-
int temp = data; _bCAZa&&
data = data[j]; t"4* ]S
data[j] = temp; c]uieig0~
} ?z.?(xZ 6
} g[(@@TiG