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。 hH8&g%{2
插入排序: ]ordqulq1
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package org.rut.util.algorithm.support; ^,>w`8
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import org.rut.util.algorithm.SortUtil; 5X) 8Nwbc
/** xh;V4zK@`
* @author treeroot e5|lz.o;
* @since 2006-2-2 fE-R(9K
* @version 1.0 )/T[Cnx.Nc
*/ 6>a6;[
public class InsertSort implements SortUtil.Sort{ 9P?0D
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/* (non-Javadoc) b2m={q(s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3e_tT8
*/ /Nf{;G!kg
public void sort(int[] data) { $TI^8 3
int temp; i+Z)`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9L=mS
} 7*!7EBb
} 95l)s],
} 1)ue-(o5
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} <RGH+4LF
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冒泡排序: T6U/}&{O
S
/hx\TzC
package org.rut.util.algorithm.support; /Z:j:l
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import org.rut.util.algorithm.SortUtil; `2mddx8
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/** -NBVUUAgN
* @author treeroot p['RV
* @since 2006-2-2 RY , <*
* @version 1.0 ^4dE8Ve"@
*/ s ^h@b!'7
public class BubbleSort implements SortUtil.Sort{ ar3L|MN
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/* (non-Javadoc) t#k]K]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z*\_+u~u
*/ m=dNJF
public void sort(int[] data) { !}(B=-
int temp; VW-qQe
for(int i=0;i for(int j=data.length-1;j>i;j--){ B~p%pTS+
if(data[j] SortUtil.swap(data,j,j-1); -'! J?~
} `Ij@;=(
} @)Qgy}*5
} |cvU2JI@
} F2"fOS
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} st-{xC#N#
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选择排序: 3SVGx<,2
Br1R++]
package org.rut.util.algorithm.support; T[oC='I+O
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import org.rut.util.algorithm.SortUtil; pgU[di
V;M_Y$`Lh
/** ]PXM;w
* @author treeroot GEBSUvM 7
* @since 2006-2-2 ci0A!wWD
* @version 1.0 AGlBvRX7e
*/ {{G)Ry*pb
public class SelectionSort implements SortUtil.Sort { $O"ss>8Se
g'"~'
/* #}`sfaT
* (non-Javadoc) ~6G
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* R~vGaxZ$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d$t"Vp
*/ Q:}]-lJg
public void sort(int[] data) { MpV<E0CmE
int temp; /bo}I-<2
for (int i = 0; i < data.length; i++) { Z)?$ZI@
int lowIndex = i; YQBLbtn6(
for (int j = data.length - 1; j > i; j--) { V6]6KP#D
if (data[j] < data[lowIndex]) { [Vd$FDki
lowIndex = j; X1j8tg
} iT]t`7R
} P}R:o
SortUtil.swap(data,i,lowIndex); -ng1RA>
} mRk)5{
} +QChD*
#:K=zV\
} gabfb#
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Shell排序: n]%-2`}(
|[\;.gT K
package org.rut.util.algorithm.support; N /4E
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import org.rut.util.algorithm.SortUtil; V9c.(QY|f
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/** 1`cH
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* @author treeroot `4Yo-@iVP
* @since 2006-2-2 s9- qR_
* @version 1.0 ejN/U{)jK'
*/ u`bD`kfT>
public class ShellSort implements SortUtil.Sort{ 'eM0i[E+`
JEUU~L;
/* (non-Javadoc) 0TU3
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 57\ 0MQO
*/ c=!>m
public void sort(int[] data) { 4~fYG| a
for(int i=data.length/2;i>2;i/=2){ `7"="T~ *
for(int j=0;j insertSort(data,j,i); 4G&`&fff]
} \Kl20?
} S?~0)EXj(
insertSort(data,0,1); gx&es\
} y|`-)fY
JEjxY&
/** 5EYGA\
* @param data .9~j%]q
* @param j ,H=k5WA4m
* @param i T{dQ4
c
*/ 0ho;L 0Nr'
private void insertSort(int[] data, int start, int inc) { U^m#!hp
int temp; [WwoGg*)mn
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 'l*X?ccKy
} _w^,j"
} %>Kba M1b
} pMfb(D"
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} 1@]&iZ]
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快速排序: C'6I< YX
'$ei3
package org.rut.util.algorithm.support; YxF@1_g
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import org.rut.util.algorithm.SortUtil; (7 I|lf
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/** t G_4>-Y#w
* @author treeroot ASqYA1p.
* @since 2006-2-2 U1\7Hcs$
* @version 1.0 4 m:h&^`N
*/ X[B P0:`t
public class QuickSort implements SortUtil.Sort{ R)NSJ-A!2
!%>RHh[
/* (non-Javadoc) { _9O4 +
&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =?5)M_6)
*/ FnvpnU",
public void sort(int[] data) { k:0j;\Sx
quickSort(data,0,data.length-1); zWY988fX0
} 0Lo8pe`DH
private void quickSort(int[] data,int i,int j){ .NOAp
int pivotIndex=(i+j)/2; :i.@d?
file://swap L(y70T
SortUtil.swap(data,pivotIndex,j); l=?e0d>O
(< +A w7
int k=partition(data,i-1,j,data[j]); (Pc>D';{S
SortUtil.swap(data,k,j); Fh #QS'[
if((k-i)>1) quickSort(data,i,k-1); $/wm k7T
if((j-k)>1) quickSort(data,k+1,j); e]4$H.dP
2<D| {
} X^\D"fmE.
/** { 'b;lA]0
* @param data <)7aNW.
* @param i b\P:a_vq
* @param j (&}[2pb!
* @return )Q 2IYCj{
*/ gN/<g8
private int partition(int[] data, int l, int r,int pivot) { C;W@OS-;
do{ >|taU8^|G}
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); JFT$1^n
SortUtil.swap(data,l,r); z; GQnAG@
} wGyVmC
while(l SortUtil.swap(data,l,r); __=53]jGE
return l; 3FBL CD3
} !se1W5ke#
&'uP?r9c$
} #Y7jNrxE
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改进后的快速排序: V}y]<
sT^R0Q'>
package org.rut.util.algorithm.support; MK1\
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import org.rut.util.algorithm.SortUtil; :nx+(xgw
o=rR^Z$G
/** OZ&/&?!XE
* @author treeroot M7=,J;@
* @since 2006-2-2 u8-6s+
O
* @version 1.0 eHr0],
*/ b A+_/1C
public class ImprovedQuickSort implements SortUtil.Sort { E)-;sFz
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private static int MAX_STACK_SIZE=4096; f,G*e367:
private static int THRESHOLD=10; `~XksyT
/* (non-Javadoc) ~F"S]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j
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*/ ]?6wU-a
public void sort(int[] data) { 8iIp[9~=
int[] stack=new int[MAX_STACK_SIZE]; /.]u%;%r[
2%@tnk|@
int top=-1; &5W;E+Pub
int pivot; T}fo
int pivotIndex,l,r; 3x~7N
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stack[++top]=0; x,gk]C f
stack[++top]=data.length-1; _dKMBcl)E
8T1`9ITl:
while(top>0){ T5:Q_o]
int j=stack[top--]; |Y3w6 !$
int i=stack[top--]; |=0vgwd"S
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pivotIndex=(i+j)/2; yCQvo(V[F
pivot=data[pivotIndex]; HV a9b;
V0;"Qa@q
SortUtil.swap(data,pivotIndex,j); 7_\G|Zd
^lp=4C9
file://partition Q.N!b7r7
l=i-1; N<Sl88+U
r=j; a>47k{RSzE
do{ w)7y{ya$
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;W-
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SortUtil.swap(data,l,r); 2 7)IfE
} gmVN(K}SR5
while(l SortUtil.swap(data,l,r); a2P)@R
SortUtil.swap(data,l,j); ;EBKzB
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if((l-i)>THRESHOLD){ _r:Fmn_%-
stack[++top]=i; ad}8~6}_&
stack[++top]=l-1; 71{Q#%5U~
} )U~|QdZ
if((j-l)>THRESHOLD){ %9cT#9!7
stack[++top]=l+1; W&hW N9iR
stack[++top]=j; m7^f%<l
} "z9C@T
DO~
D?/ia
} 'KH+e#?Ar
file://new InsertSort().sort(data); 4X^$"lM
insertSort(data); d88A.Z3w
} 9~hW8{#
/** 8&JB_%Gb
* @param data y i$+rPF1
*/ }u;K<<h:
private void insertSort(int[] data) { x,C8):\t`B
int temp; LK} g<!o(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2E1`r@L
} f2e;N[D
} r^5%0_F]
} 8i',~[
I8XP`Ccq
} qur2t8gnxq
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归并排序: f#z:ILG=
Bz/ba *
package org.rut.util.algorithm.support; 7(}'jZ
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import org.rut.util.algorithm.SortUtil; %SC Jmn2
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/** rR6}
* @author treeroot /B t!xSI
* @since 2006-2-2 26p[x'W
* @version 1.0 @)d_zWE
*/ LK DfV
public class MergeSort implements SortUtil.Sort{ UOb`@#
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/* (non-Javadoc) M
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hs)Cf)8u
*/ e,|gr"$/
public void sort(int[] data) { /3M8;>@u
int[] temp=new int[data.length]; *H!BThft4
mergeSort(data,temp,0,data.length-1); 'LMj.#A<g
} f-18nF7{
H=@KlSC^
private void mergeSort(int[] data,int[] temp,int l,int r){ j!agD_J
int mid=(l+r)/2; N>(w+h+
if(l==r) return ; r#OPW7mhE
mergeSort(data,temp,l,mid); .e7tq\k
mergeSort(data,temp,mid+1,r); W yM1s+@
for(int i=l;i<=r;i++){ - VJx)g
temp=data; =803rNe
} vCP[7KhGj
int i1=l; X\`']\l
int i2=mid+1; L2>e@p\>
for(int cur=l;cur<=r;cur++){ |Y
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if(i1==mid+1) Cn/WNCzst&
data[cur]=temp[i2++]; %T]$kF++&
else if(i2>r) u"&?u+1j
data[cur]=temp[i1++]; hEHd$tH06
else if(temp[i1] data[cur]=temp[i1++]; pl).U#7`
else H^|TV]^;N
data[cur]=temp[i2++]; ^i|R6oO_5
} %W~w\mT
} nYSe0w
:.5l
} *k7BE_&*0Z
kqCsEtm]
改进后的归并排序: -gvfz&Lz
:|n[z jK/S
package org.rut.util.algorithm.support; {.2\}7.c
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import org.rut.util.algorithm.SortUtil; '4uu@?!dVk
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/** @Fc:9a@
* @author treeroot .=;IdLO,Bf
* @since 2006-2-2 %>$<s<y
* @version 1.0 bB?E(>N;
*/ U>lf-iI2B
public class ImprovedMergeSort implements SortUtil.Sort { 8)>x) T
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private static final int THRESHOLD = 10; OK]Q Db
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/* j Mn,N9Mf
* (non-Javadoc) yMWh#[phH
* e' M&Eh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Imv#7{ndq
*/ N" L&Z4Z
public void sort(int[] data) { l$&~(YE f
int[] temp=new int[data.length]; 4`i8m
mergeSort(data,temp,0,data.length-1); )I&.6l!#
} n725hY6}<l
p=:Vpg<!
private void mergeSort(int[] data, int[] temp, int l, int r) { ZGZNZ}~#
int i, j, k; n1PptR
int mid = (l + r) / 2; e%cTFwX?n
if (l == r) 94-BcN
return; +4-T_m/W/
if ((mid - l) >= THRESHOLD) U,P>P+\@
mergeSort(data, temp, l, mid); 4fsd5#
else 'yPKQ/y$x
insertSort(data, l, mid - l + 1); l(NQk> w
if ((r - mid) > THRESHOLD) AY5iTbL1
mergeSort(data, temp, mid + 1, r); ai-s9r'MI?
else 7}VqXUwabx
insertSort(data, mid + 1, r - mid); :m<&Ff}
J-
S.m(
for (i = l; i <= mid; i++) { 1<G+KC[F
temp = data; x.-d)]a!
} ?Ujg.xo\
for (j = 1; j <= r - mid; j++) { gl+d0<Rzw
temp[r - j + 1] = data[j + mid]; Z jmQ
} d 5yEgc;z
int a = temp[l]; mxqD'^n#
int b = temp[r]; Mm$\j*f/
for (i = l, j = r, k = l; k <= r; k++) { (|BY<Ac3
if (a < b) { E<\$3G-do
data[k] = temp[i++]; bqED5;d'#
a = temp; nx'c=gp
} else { O=3/qs6m
data[k] = temp[j--]; ~bZ=]i
b = temp[j]; 0cycnOd
} m}'_Poc
} g$s;;V/8e
} ZHK>0>;
;Xt<\^e
/** %[$HX'Y
* @param data ~gpxK{
* @param l Kd-1EU
* @param i ) bFl-
*/ yus3GqPI
private void insertSort(int[] data, int start, int len) { N;
}$!sNIm
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ZwDL
} lfj5?y
} OL
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} fF)Q;~_VA
} 8vVE
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堆排序: AfA"QCyO
1@v<
package org.rut.util.algorithm.support; <}J!_$A
a|FkU%sjzZ
import org.rut.util.algorithm.SortUtil; 5e+j51
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/** 6axxyh%
* @author treeroot \!\:p/f
* @since 2006-2-2 0 SSdp<
* @version 1.0 b11I$b
#
*/ -LiGO #U
public class HeapSort implements SortUtil.Sort{ Jb"FY:/Qv+
R@K\
/* (non-Javadoc) D<J'\mo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8lV:-"+5
*/ |E >h*Y
public void sort(int[] data) { K+`GVmD
MaxHeap h=new MaxHeap(); NTt4sWP!I
h.init(data); ipn-HUrE@
for(int i=0;i h.remove(); aLh(8 ;$
System.arraycopy(h.queue,1,data,0,data.length); sYS
8]JU
} #p(c{L!
t,9+G<)>H
private static class MaxHeap{ 2V@5:tf
Y_Gd_+oJ
void init(int[] data){ =v<w29P(g
this.queue=new int[data.length+1]; YcA. Bn|as
for(int i=0;i queue[++size]=data; jOV6%
fixUp(size); sa8O<Ab
} */e$S[5
} "0!h-bQN
Ve(<s
private int size=0; dCoP
qKy
9Rk(q4.OP
private int[] queue; dT0W8oL
sLA.bp.O
public int get() { 4<($ZN8
return queue[1]; +S{m!j%B
} zls^JTE
[]A9j?_w
public void remove() { ]ltCJq
SortUtil.swap(queue,1,size--); :=hL}(~]
fixDown(1); Yd3lL:M
} "zq'nV=
file://fixdown )3CM9P'0
private void fixDown(int k) { 5&8BO1V.
int j; J920A^)j!
while ((j = k << 1) <= size) { 0HWSdf|w
if (j < size %26amp;%26amp; queue[j] j++; K F'fg
R
if (queue[k]>queue[j]) file://不用交换 c$ /.Xp
break; /
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SortUtil.swap(queue,j,k); ~3bV~H#~m
k = j; {Z/iYHv~#c
} J6CSu7Voa
} 0hoMf=bb$
private void fixUp(int k) { c6F?#@?
while (k > 1) { p-"C^=l
int j = k >> 1; sR/Yv
if (queue[j]>queue[k]) +~V_^-JG&
break; <ci(5M
SortUtil.swap(queue,j,k); #+o$Tg
k = j; JAHg_!
} o*204BGB
} MX]#|hEeQ
i]<@
} Oey
Ph9^V
<zqIq9}r
} (.$$U3\
jlb8<xIC]
SortUtil: M;XU"8
#fF5O2E'3
package org.rut.util.algorithm; R>"pJbS;L
J?{sTj"KB
import org.rut.util.algorithm.support.BubbleSort; j?C[ids<
import org.rut.util.algorithm.support.HeapSort; %S^ke`MhF
import org.rut.util.algorithm.support.ImprovedMergeSort; imADjBR]
import org.rut.util.algorithm.support.ImprovedQuickSort; N=u(
3So
import org.rut.util.algorithm.support.InsertSort; I0l3"5X
a
import org.rut.util.algorithm.support.MergeSort; ;L:UYhDbUx
import org.rut.util.algorithm.support.QuickSort; 9=}#.W3.
import org.rut.util.algorithm.support.SelectionSort; \
3E%6L
import org.rut.util.algorithm.support.ShellSort; |d&Kr0QIV
n=b!c@f4
/** ?6*\M
* @author treeroot J,v024TM
* @since 2006-2-2 y=9fuGL6
* @version 1.0 rui 8x4c
*/ T=w0T-[f
public class SortUtil { W/RB|TMT
public final static int INSERT = 1; 9/8+R%
public final static int BUBBLE = 2; -ik$<>{X
public final static int SELECTION = 3; E
@r &K
public final static int SHELL = 4; s-6$C
public final static int QUICK = 5; L7lpOy4k
public final static int IMPROVED_QUICK = 6; M`7lYw\Or!
public final static int MERGE = 7; @ebY_*
public final static int IMPROVED_MERGE = 8; N\s-{7K
public final static int HEAP = 9; k3LHLJZ#
YO.ddy*59
public static void sort(int[] data) { 0{d)f1
sort(data, IMPROVED_QUICK); &9gI?b8
} KY2z)#/
private static String[] name={ cC9Zc#aK
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" LTx,oa:ma
}; \*5z0A9)5)
S^1ZsD.
private static Sort[] impl=new Sort[]{ k0FAI0~(
new InsertSort(), E}zGY2Xx
new BubbleSort(), ]/p>p3@1C
new SelectionSort(), EFU)0IAL[
new ShellSort(), !`H!!Kg0L
new QuickSort(), c;KMox/
new ImprovedQuickSort(), ,WsG,Q(K
new MergeSort(), guCCu2OTA%
new ImprovedMergeSort(), OGH,K'l
new HeapSort() '4GN%xi
}; BC#`S&R
:V6t5I'_
public static String toString(int algorithm){ ?;w`hA3ei
return name[algorithm-1]; ,y0 &E8Z
} kxrYA|x
SPe%9J+
public static void sort(int[] data, int algorithm) { cAx$W6S
impl[algorithm-1].sort(data); ,ZYPffu<*
} }] 1C=~lC
`)8SIx
public static interface Sort { |BtFT
public void sort(int[] data); jc32s}/H
} +u |SX/C
lP4s"8E`h
public static void swap(int[] data, int i, int j) { a$iDn_{
int temp = data; s,mt%^x[
data = data[j]; /ZL6gRRA|
data[j] = temp; non5e)w3@
} lQgavP W!
} 2.{zfr