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。 )83UF
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插入排序: ?\_\pa/+
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package org.rut.util.algorithm.support; eN]AJ%Ig
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import org.rut.util.algorithm.SortUtil; km%c0:
/** '*`25BiQ
* @author treeroot w]<a$C8*y:
* @since 2006-2-2
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* @version 1.0 pi/Jto25z
*/ 6p;G~,bd~
public class InsertSort implements SortUtil.Sort{ dCbRlW
|Z), OW
/* (non-Javadoc) |:yWDZg[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;"d>lyL
*/ O7]p `Xi8
public void sort(int[] data) { A"yiXc-N~\
int temp; 0Yh Mwg?
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0[\^Y<ec
} H]^hEQ3DT
} w+,Kpb<x[0
} ,RP"m#l!\
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} LIm{Y`XU
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冒泡排序: 8XS_I{}?
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package org.rut.util.algorithm.support; H%`$@U>
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import org.rut.util.algorithm.SortUtil; REEs}88);'
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/** D9hV`fA
* @author treeroot %MA o<,ha
* @since 2006-2-2 5X4 #T&.
* @version 1.0 >#9f{
*/ mNc?`G_R
public class BubbleSort implements SortUtil.Sort{ [2WJ];FJ
{~L{FG)O
/* (non-Javadoc) ;7;=)/-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +-s$Htx
*/ eUY/H1
public void sort(int[] data) { ]RBT9@-:U
int temp; -k4w$0)
for(int i=0;i for(int j=data.length-1;j>i;j--){ R]LRgfi9
if(data[j] SortUtil.swap(data,j,j-1); 5ov F$qn
} D7X8yv1
} &3@{?K
} IdHydY1
} %a'Nf/9=:
<`PW4zSI
} a/@F?\A
F rKI=8
选择排序: ?h$
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@Rc/^B:
package org.rut.util.algorithm.support; LBcnBo</v
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import org.rut.util.algorithm.SortUtil; Ht{Q=w/9
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/** 6k4ZzQ}
* @author treeroot >ocDh~@aP
* @since 2006-2-2 4G o$OQ`
* @version 1.0 \dx$G?R
*/ '5f6
M^}|2
public class SelectionSort implements SortUtil.Sort { +o ;}*
d~|/LR5
/* 6r]l8*34;
* (non-Javadoc) p;x3gc;0
* _aaQ1A`p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4#MPD
*/ !gyEw1Re7
public void sort(int[] data) { tCVaRP8eC+
int temp; 0etJ, _">
for (int i = 0; i < data.length; i++) { 3g{T+c*
int lowIndex = i; ;^"#3_7T]
for (int j = data.length - 1; j > i; j--) { KAFx^JLo
if (data[j] < data[lowIndex]) { bTd94
lowIndex = j; U65a_dakk
} xQ]^wT.Q
} _u]S/X-
SortUtil.swap(data,i,lowIndex); ^&|KuI+u
} c %f'rj
} v PJ=~*P=
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Is:J
} y@'~fI!E4
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Shell排序: =qNZ7>Qw
o9JZ-biH
package org.rut.util.algorithm.support; iD(+\:E
#;lB5) oe
import org.rut.util.algorithm.SortUtil; !RPPwvNk4
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/** ^5{0mn_4i
* @author treeroot . 1q4Q\B<
* @since 2006-2-2 .Bs~FIe^
* @version 1.0 e.n*IJ_fz
*/ hgU#2`fS
public class ShellSort implements SortUtil.Sort{ !xRboPg
U#mrbW
/* (non-Javadoc) 2@jlF!zC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y@#rGV>
*/ >39\u&)
public void sort(int[] data) { JA]qAr
for(int i=data.length/2;i>2;i/=2){ I7-6|J@#^
for(int j=0;j insertSort(data,j,i); k3-7Vyg
} .~C[D
T+,
} nuucYm%IF-
insertSort(data,0,1); !]l!I9
} gwQk
M4
4f-I,)qCBk
/** OBp&64
* @param data *S?vw'n
* @param j abczW[\
* @param i RHj<t");
*/ &f"kWOe$X
private void insertSort(int[] data, int start, int inc) { km=d'VvnI
int temp; Eo@b)h
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); CW .
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} rv26vnJy"
} nB.u5
} B4/\RC2
Z]\IQDC
} )2Dm{T
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快速排序: Pf?zszvs
h;RKF\U:"
package org.rut.util.algorithm.support; E!6 Nf[
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import org.rut.util.algorithm.SortUtil; a(|,KWHn
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/** ,b!]gsds
* @author treeroot O@)D%*;v
* @since 2006-2-2 JXNfE,_
* @version 1.0 Ed ,O>(
*/ z'rB_l
public class QuickSort implements SortUtil.Sort{ +H `FC
E==vk~cz
/* (non-Javadoc) %.mHV7c)%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w.9'TR
*/ 7w8I6
public void sort(int[] data) { I7@g,~s
quickSort(data,0,data.length-1); kM o7mkV
} meM61ue_2
private void quickSort(int[] data,int i,int j){ KU5|~1t 4
int pivotIndex=(i+j)/2; {klyVb
file://swap #CcWsI>+w>
SortUtil.swap(data,pivotIndex,j); :,*{,^2q:
u^Ss8}d
int k=partition(data,i-1,j,data[j]); zZ})$Ny(
SortUtil.swap(data,k,j); !-<PV
if((k-i)>1) quickSort(data,i,k-1); 0!(BbQnWI
if((j-k)>1) quickSort(data,k+1,j); uNS ]n}
c_+y~X)i
} RLL2'8"A
/** =c1t]%P,
* @param data 0f]LOg
* @param i nApkK1?
* @param j k2t#O%_f
* @return 50VH>b_
*/ *E1 v
private int partition(int[] data, int l, int r,int pivot) { Q ,6[
do{ O9Fg_qfuT_
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -'wFaW0%I
SortUtil.swap(data,l,r); (;1Pgh
} $%5f
while(l SortUtil.swap(data,l,r); GJB=5nE
return l; e/nc[
} :f|X$>
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} ,f2tG+P
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改进后的快速排序: { kF"<W
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package org.rut.util.algorithm.support; *LZ^0c: r
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import org.rut.util.algorithm.SortUtil; %I>-_el
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/** q(YFt*(;w
* @author treeroot A=a~ [vre
* @since 2006-2-2 -|\SNbPTV
* @version 1.0 *M^t@ h l
*/ {24Y1ohK
public class ImprovedQuickSort implements SortUtil.Sort { @w]z"UCwV@
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private static int MAX_STACK_SIZE=4096; Xj+oV
private static int THRESHOLD=10; WUesTA>
/* (non-Javadoc) RLtIn!2OU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @cT= t0*
*/ zbM*/:Y
public void sort(int[] data) { BMlu>,
int[] stack=new int[MAX_STACK_SIZE]; n"P29"
NIasce e
int top=-1; fNllF,8}
int pivot; YLO/J2['
int pivotIndex,l,r; JRT,%;*,
*k%3J9=-1
stack[++top]=0; }M+2 ,#l
stack[++top]=data.length-1; !?%'Fy6t
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while(top>0){ |4tnG&=
int j=stack[top--]; LG6k
KG
int i=stack[top--]; g3"eEg5 NY
YR$)yl
pivotIndex=(i+j)/2; zEu15!~
pivot=data[pivotIndex]; &GetRDr
KE
k]<b=
SortUtil.swap(data,pivotIndex,j); E
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HGJfj*JH
file://partition ""2g{!~r
l=i-1; fL7u419=
r=j; =O?#>3A}
do{ sHwn,4|iY
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .xIu
SortUtil.swap(data,l,r); vs|_l!n3
} Q[U_
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while(l SortUtil.swap(data,l,r); $F,&7{^
SortUtil.swap(data,l,j); mhXSbo9w-
ygz6 ~(
if((l-i)>THRESHOLD){ Q#$#VT!F
stack[++top]=i; qp6*v&
stack[++top]=l-1; kk*:S* ,
} >tFv&1iR
if((j-l)>THRESHOLD){ NcVsQV
stack[++top]=l+1; Y3J;Kk#AH
stack[++top]=j; "Nx3_mQ
} A7SE>e>
EE<^q?[3^
} ^Nu0+S
file://new InsertSort().sort(data); \h&ui]V
insertSort(data); N1Pm4joH%
} 0-9.u`)#yu
/** Z;XiA<|
* @param data AvNU\$B4aG
*/ |y*-)t
private void insertSort(int[] data) { *i>?YT
int temp; k5=VH5{S
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V;V,G+0Re
} OSsxO(;g
} aYyUe>
} 8%;K#,>
O^AF+c\n
} cIIt ;q[
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归并排序: e~wJO~
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package org.rut.util.algorithm.support; k'd(H5A
7wU$P
import org.rut.util.algorithm.SortUtil; 4[eQ5$CB<u
s.)nS$
/** >(t_
* @author treeroot E9yBa=#*c
* @since 2006-2-2 =`l).GnN2`
* @version 1.0 }uTe(Rf
*/ DG&[.dR+
public class MergeSort implements SortUtil.Sort{ d5x>kO'[l
3N]
/* (non-Javadoc) 8] BOq:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p
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*/ L,XWX8
public void sort(int[] data) { 0K&\5xXM
int[] temp=new int[data.length]; 8>}^W
mergeSort(data,temp,0,data.length-1); c<8RRYs
} }5)sS}C
2eOde(K+
private void mergeSort(int[] data,int[] temp,int l,int r){ ZN:~etd
int mid=(l+r)/2; &$vW
if(l==r) return ; UBUZ}ZIbN
mergeSort(data,temp,l,mid); Dw@0P
mergeSort(data,temp,mid+1,r); ]/p)XHKo
for(int i=l;i<=r;i++){ dtdz!'q)Y
temp=data; [,F5GW{x
} |Q'l&Gt6
int i1=l; WaVP+Ap
int i2=mid+1; ?}N@bsl08w
for(int cur=l;cur<=r;cur++){ 4gTD HQP
if(i1==mid+1) s57-<&@J9
data[cur]=temp[i2++]; Ng6(2Wt0e
else if(i2>r) `dYM+ jpa
data[cur]=temp[i1++]; 0$n0fu
else if(temp[i1] data[cur]=temp[i1++]; %EZG2J jO)
else ~ "]6
data[cur]=temp[i2++]; y<G@7?
} 3zO'=gwJ
} 4No!`O-!&
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.<
} (]|rxmycA
y:0j$%^
改进后的归并排序: K#=)]qIk
{=AK|
package org.rut.util.algorithm.support; n=vW oU9
C} #:<Jx
import org.rut.util.algorithm.SortUtil; ("t;
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C^@~
/** /"t*gN=wrF
* @author treeroot vG'JMzAm
* @since 2006-2-2 =H_|007C
* @version 1.0 F<y5zqGy@
*/ ,6Kx1 c
public class ImprovedMergeSort implements SortUtil.Sort { N/A.1W
*pMgjr
private static final int THRESHOLD = 10; +"!,rZ7,A
Bv^{|w
/* K8.=bGyg
* (non-Javadoc) ;as4EqiK
* #Nt?4T<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -WIT0F4o;
*/ S6 F28 d[j
public void sort(int[] data) { C3af>L@}
int[] temp=new int[data.length]; 9-DDly [)4
mergeSort(data,temp,0,data.length-1); nT0FonK>
} .y {qsL^P
goi5I(yn^
private void mergeSort(int[] data, int[] temp, int l, int r) { 3QDz0ct
int i, j, k; {]~b^=qE$
int mid = (l + r) / 2; L$7
NT}L
if (l == r) NZ`( d
return; C,R_`%b%
if ((mid - l) >= THRESHOLD) T?W`g>yM
mergeSort(data, temp, l, mid); pHlw&8(f"
else k,S'i#4q4
insertSort(data, l, mid - l + 1); Int6xoz
if ((r - mid) > THRESHOLD) B*A{@)_
mergeSort(data, temp, mid + 1, r); 4r!8_$fN?G
else 95;q] =U
insertSort(data, mid + 1, r - mid); ~/J:p5?L
xI}h{AF7
for (i = l; i <= mid; i++) { N^A&DrMF
temp = data; LuS]D%
} N<$U:!Z
for (j = 1; j <= r - mid; j++) { \+mc
temp[r - j + 1] = data[j + mid]; aDuO!?Cm
} 0[g8
int a = temp[l]; 0t<]Uf
int b = temp[r]; s4bLL
for (i = l, j = r, k = l; k <= r; k++) { ~HsPYc8Fz
if (a < b) { |?0Cm|?
data[k] = temp[i++]; FA?xp1E
a = temp; =h^cfyj
} else { ?fDF Rms
data[k] = temp[j--]; OwrzD~
b = temp[j]; ZKyK#\v<
} pPm[<^\# S
} ,x}p1EZ
} #*;(%\q}
>}h/$bU
/** =NwmhV
* @param data j8?z@iG
* @param l a9qB8/Gg[
* @param i >I AwNr
*/ EO$_]0yI;_
private void insertSort(int[] data, int start, int len) { Fku9hB
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .?9+1.`
} d paZ6g
} GEXT8f(7
} N7k<q=r-
} y%
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hN$6Kx>{
堆排序: utKtxLX"
_Dl!iV05:
package org.rut.util.algorithm.support; B\A2Vm`&
)e|Cd} 2
import org.rut.util.algorithm.SortUtil; *;. l/
oHdss;q
/** mw";l$Aq}
* @author treeroot !1K<iz_8
* @since 2006-2-2 " &'Jw
* @version 1.0 "knSc0,u
*/ Xjc{={@p3
public class HeapSort implements SortUtil.Sort{ 7F.t>$'
B5pMcw
/* (non-Javadoc) (-DA%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $/5<f<%u&)
*/ u{xjFx-
public void sort(int[] data) { m{Jo'*%8f
MaxHeap h=new MaxHeap(); 0{g @j{Lbz
h.init(data); s`M[/i3Nm
for(int i=0;i h.remove(); tJo,^fdfv
System.arraycopy(h.queue,1,data,0,data.length); \]=qGMwFs
} 6*%3O=*
2j8^Z
private static class MaxHeap{ :Jwc'y-]
jC>l<d_
void init(int[] data){ eW#U<x%P
this.queue=new int[data.length+1]; ]uO 8
for(int i=0;i queue[++size]=data; pZp|F
fixUp(size); t_ 5b
} ~(kIr?^
} 6z@OGExmd#
PI~LbDE
private int size=0; w
V&{w7
vUl5%r2O4
private int[] queue; E"!C3SC [
'jWd7w~(
public int get() { q/-8sO}q
return queue[1]; -]"=b\Q
} *f|9A/*B3
iaO;i1K5U
public void remove() { rBLkowDP*
SortUtil.swap(queue,1,size--); #=/eu=
fixDown(1); {Buoo~
} /l_$1<c
file://fixdown &RP!9{F<
private void fixDown(int k) { 4K` N3
int j; }ny,Nl
while ((j = k << 1) <= size) { 6dQa|ACX_
if (j < size %26amp;%26amp; queue[j] j++; 6He 7A@Eh
if (queue[k]>queue[j]) file://不用交换 ^Cb7R/R3
break; ?PORPv#
SortUtil.swap(queue,j,k); U*F|Z4{W
k = j; F_;oZ
} ^ a%U *>P
} ,\Gn
private void fixUp(int k) { a6=mE?JTB
while (k > 1) { 1L1_x'tT%
int j = k >> 1; .{
^4I
if (queue[j]>queue[k]) 2f\;#-
break; '8`{u[:
SortUtil.swap(queue,j,k); I$0JAy
k = j; i$[wgvJIV
} W Da;wt
} I7b(fc-r
ZxkX\gl91
} )}L*8 LV
YAnt}]u!"
} M iIH&z
;:1d<Q|
SortUtil: avxI\twAU
"Q9S<O8)
package org.rut.util.algorithm; NhQIpzL)
eCdx(4(\a
import org.rut.util.algorithm.support.BubbleSort; mLX1w)=r
import org.rut.util.algorithm.support.HeapSort; VpSk.WY/ e
import org.rut.util.algorithm.support.ImprovedMergeSort; ie+&@u
import org.rut.util.algorithm.support.ImprovedQuickSort; *FDz20S
import org.rut.util.algorithm.support.InsertSort; QxvxeK!Y
import org.rut.util.algorithm.support.MergeSort; ut%t`Y(
]
import org.rut.util.algorithm.support.QuickSort; t ]{qizfOB
import org.rut.util.algorithm.support.SelectionSort; c/
%5IhX?
import org.rut.util.algorithm.support.ShellSort; 7r?O(0>
K0 .f4o
/** LB%_FT5
* @author treeroot KY/}jJW
* @since 2006-2-2 fEc}c.!5
* @version 1.0 a%f{mP$m
*/ Nk=F.fp|/
public class SortUtil { Us.yKAHPV
public final static int INSERT = 1; pWH8ex+
public final static int BUBBLE = 2; j~c7nWfX
public final static int SELECTION = 3; '"QC^Joz
public final static int SHELL = 4; {n%-^9b1{&
public final static int QUICK = 5; |o~<Ti6]
public final static int IMPROVED_QUICK = 6; "T5?<c
public final static int MERGE = 7; ^T"9ZBkb
public final static int IMPROVED_MERGE = 8; uHBX}WH
public final static int HEAP = 9; t+Mr1e
XP5q4BM
public static void sort(int[] data) { =:`1!W0I
sort(data, IMPROVED_QUICK); AC3K*)`E
} (u85$_C
private static String[] name={ K1uN(T.Ju
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (FZL>
}; 8h9t8?
a*&P>Lwe7&
private static Sort[] impl=new Sort[]{ 6"WR}S0o
new InsertSort(), *2crhI*@>
new BubbleSort(), >JS\H6
new SelectionSort(), {y<[1Pms
new ShellSort(), L5%~H?K(
new QuickSort(), >`=
'~y8
new ImprovedQuickSort(), FOpOS?Cr'
new MergeSort(), PYr#vOH
new ImprovedMergeSort(), {r.#R|
4v
new HeapSort() mJewUc!<5
}; gwQL9
UYx
lJoMJS;S]}
public static String toString(int algorithm){ &J^@TgqL^
return name[algorithm-1]; |DfYH~@(
} ,^O**k9F
K2nq2Gbn
public static void sort(int[] data, int algorithm) { 1iaNb[:QX
impl[algorithm-1].sort(data); {@g3AG%
} I%%\;Dy
x*5'
6
public static interface Sort { : QSlctW
public void sort(int[] data); CZE5RzG
} t)g1ICt
Zb-TCS+3l
public static void swap(int[] data, int i, int j) { hd9fD[5
int temp = data; AM##:4
data = data[j]; yXY8 oE
data[j] = temp; }r`!p5\$K0
} 0sVCTJ@
} zm2&\8J