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。 Qt+|s&HGt
插入排序: 2ckAJcpEb/
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package org.rut.util.algorithm.support; v 4@=>L
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import org.rut.util.algorithm.SortUtil; 8&15kA
/** . &dh7`l
* @author treeroot 2o0.ttBAqZ
* @since 2006-2-2 0\G`AO;D
* @version 1.0 V=<OV]0
*/ Pn )^mt
public class InsertSort implements SortUtil.Sort{ ^;J@]&[
~
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/* (non-Javadoc) 3"28=)o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @@L@r6
*/ (p1y/"Xh
public void sort(int[] data) { +y!B`'J
int temp; ~#X,)L{y7v
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iI_ad7,u
} l3Vw?f
} 8 *@knkJ
} s1,kTde
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} VGbuEC [Y
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冒泡排序: ;p~ &G"-C`
eySV -f{
package org.rut.util.algorithm.support; DKV^c'
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import org.rut.util.algorithm.SortUtil; v#iKa+tx
x:TBZh?@$
/** zk+&5d4(
* @author treeroot |*4)G6J@n
* @since 2006-2-2 P8DT2|Z6f]
* @version 1.0 \cq
gCab/2
*/ 65FdA-4
public class BubbleSort implements SortUtil.Sort{ iz'#K?PF_
} D5*
/* (non-Javadoc) qaBjV6loy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &KfRZ`9H
*/ #JAU5d
public void sort(int[] data) { (bfHxkR.
int temp; D#>+]}5@x
for(int i=0;i for(int j=data.length-1;j>i;j--){ >G`=8Ku
if(data[j] SortUtil.swap(data,j,j-1); (k?,+jnR
} 4l! ^"=rh
} 3c5=>'^F
} xyO]Evg
} ygm4A j>
h.Cr;w,2R
} 0{ovLzW
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选择排序: yteJHaq
rvT75dV0
package org.rut.util.algorithm.support; w$J0/eX{A
8fpaY{]
import org.rut.util.algorithm.SortUtil; Xrnxpp!#^D
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/** S[fzy$">
* @author treeroot >SJ#
rZ
* @since 2006-2-2 &(!Sy?tNe
* @version 1.0 x{u7# s1|/
*/ pm<zw-
public class SelectionSort implements SortUtil.Sort { Wx}+Vq<q
*#j+,q!X
/* ~8'4/wh+8
* (non-Javadoc) ,RFcR[ak
* lhm=(7Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wAE,mw
*/ m
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public void sort(int[] data) { tN|sHgs
int temp; Y$3H$F.+
for (int i = 0; i < data.length; i++) { 9 F~U%
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int lowIndex = i; EZkg0FhkZ
for (int j = data.length - 1; j > i; j--) { q|J3]F !n
if (data[j] < data[lowIndex]) { x;NCW
lowIndex = j; KK-9[S-
} ehEXC
} A:3bL:
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SortUtil.swap(data,i,lowIndex); '>(R'g42n
} fRo_rj _
} T:Dp+m!\{
]saf<?fzr
} mLM$dk3
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Shell排序: iqCKVo7:M
hx$-d}W{
package org.rut.util.algorithm.support; o"@y=n/
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import org.rut.util.algorithm.SortUtil; IC}?oXs5G
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/** ADRjCk}I
* @author treeroot M-KjRl
* @since 2006-2-2 8;7Y}c
* @version 1.0
v#0R
*/ }fw;{&s{z
public class ShellSort implements SortUtil.Sort{ GW$(E*4q
v%3mhk#
/* (non-Javadoc) HxJKS*H;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qPdNI1 |
*/ -X(%K6{
public void sort(int[] data) { c_xtwdkL9
for(int i=data.length/2;i>2;i/=2){ =?UCtYN,P
for(int j=0;j insertSort(data,j,i); ~~]/<d
} GDC`\cy
} WAiEINQ^)
insertSort(data,0,1); 42LlR
0
} VAf~,T]Ww
'01H8er
/** |i-Q fpn
* @param data xKKL4ws
* @param j 2A@9jl s
* @param i {O*<1v9<
*/ *zX*k7LnV
private void insertSort(int[] data, int start, int inc) { D"fE )@Q@Y
int temp; WlP#L`
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %7BVJJp2
} QZk:G+$
} yG58?5\9
} #5O'XH5_
V%&t'H{
} -CW&!oW
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快速排序: Ltpd:c
C,C%1
package org.rut.util.algorithm.support; "Iu[)O%
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import org.rut.util.algorithm.SortUtil; B M{GSX
")7,ZN;
/** L f[>U
* @author treeroot sChMIbq!Av
* @since 2006-2-2 94r8DkI
* @version 1.0 .EVy?-
*/ 7\d{F)7E
public class QuickSort implements SortUtil.Sort{ 6\4ny 0
WM BntB
/* (non-Javadoc) hNUAwTH6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^[XxE Lx
*/ 5gW`;Cdbyc
public void sort(int[] data) { HTI1eLZ2
quickSort(data,0,data.length-1); c+AZ(6O?\
} 1(M0C[P
private void quickSort(int[] data,int i,int j){ 8Q^yh6z
int pivotIndex=(i+j)/2; }[Uh4k8P
file://swap Q^/5hA
SortUtil.swap(data,pivotIndex,j); -yeQQ4b
0m,A`*o
int k=partition(data,i-1,j,data[j]); X"b4U\A
SortUtil.swap(data,k,j); 49}yw3-
if((k-i)>1) quickSort(data,i,k-1); "s2?cQv{#
if((j-k)>1) quickSort(data,k+1,j); i^sK+v
zvL&V
.>
} k|-`d
/** c\UVMyE
* @param data }gyJaMA
* @param i @Fqh]1t
* @param j (6z^m?t?
* @return exV6&bdu
*/ wXDF7tJh
private int partition(int[] data, int l, int r,int pivot) { 'P}"ZHW
do{ +V1EqC*
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W^0F(9~!(
SortUtil.swap(data,l,r); m_~
p G
} qAm$yfYs`
while(l SortUtil.swap(data,l,r); l?(nkg["nY
return l; g~.,-V}
} qf+jfc(Iby
%([$v6y
} @B
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改进后的快速排序: pOD|
nWN~G
package org.rut.util.algorithm.support; V4qHaG
b$[_(QUw
import org.rut.util.algorithm.SortUtil; (.P;VH9R\
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/** VgZ<T,SuW
* @author treeroot Gk,{{:M:5
* @since 2006-2-2 MLY19 ;e
* @version 1.0 F
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*/ ADA%$NhJ!
public class ImprovedQuickSort implements SortUtil.Sort { O+`^]D7
#`:s:bwM:
private static int MAX_STACK_SIZE=4096; ;|w &n
private static int THRESHOLD=10; z=!$3E ecr
/* (non-Javadoc) C!XI0d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [V{JuG;s
*/ KoiU\r
public void sort(int[] data) { 64s+
0}
int[] stack=new int[MAX_STACK_SIZE]; "%urT/Fv&
%H>vMR-,~
int top=-1; /V~L:0%
int pivot; P~_CDh.N
int pivotIndex,l,r; 0{v?
9 f-T>}
stack[++top]=0; swG^L$r`
stack[++top]=data.length-1; xj{X#[q):
J[YA1
while(top>0){ v6oPAqj,r
int j=stack[top--]; riZFcVsB
int i=stack[top--]; :tdx:
VbM5]UT/
pivotIndex=(i+j)/2; /}2
bsiJT
pivot=data[pivotIndex]; >?'q P ]
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SortUtil.swap(data,pivotIndex,j); ,.]e~O4R
WRh&4[G'
file://partition &[*_ -
l=i-1; X~0l1 @!
r=j; |/arxb&
do{ aen(Mcd3bg
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); IG`~^-}7lR
SortUtil.swap(data,l,r); 2P$l XGjh
} Cd'P
while(l SortUtil.swap(data,l,r); ce2d)FG}e
SortUtil.swap(data,l,j); FO_nS
,p1 (0i
if((l-i)>THRESHOLD){ & /-@R|
stack[++top]=i; .`Z{ptt>
stack[++top]=l-1; FvG9PPd
} "x9xJ
if((j-l)>THRESHOLD){ z:u`W#Rf
stack[++top]=l+1; $2]1 3j
stack[++top]=j; MGc=TQ.
} @EfCNOy
Rt7}e09HV
} *Vfas|3hZI
file://new InsertSort().sort(data); z$ysp!
insertSort(data); ?#}=!$p
} :m8ED[9b
/** ||`w MWq
* @param data n#z^uq|v
*/ |GK [I
private void insertSort(int[] data) { ^eM=h
int temp; rctn0*MP
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lx$Y-Tb^F
} gK(E0p"
} XYod>[.x
} l]WV?^*
hNDhee`%6
} (N;Jw^C@
mI9h| n
归并排序:
cD0
F1M@$S,
package org.rut.util.algorithm.support; "oz@w'rG
7;CeQx/W)W
import org.rut.util.algorithm.SortUtil; [2i+f<
cnLC> _hY
/** =#BeAsFfO
* @author treeroot rO]C`bg
* @since 2006-2-2 *!Am6\+
* @version 1.0 yp@mxI@1
*/ $k'f)E
public class MergeSort implements SortUtil.Sort{ 3Xd+>'H
T:)>Tcv}:
/* (non-Javadoc) |]GEJUWtCd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V2g$"W?3
*/ ljiq +tT
public void sort(int[] data) { OzO_E8Kb\
int[] temp=new int[data.length]; !ox &`
mergeSort(data,temp,0,data.length-1); bx6@FKns}
} 7[D0n7B@
C{!Czz.N
private void mergeSort(int[] data,int[] temp,int l,int r){ ykM#EyN
int mid=(l+r)/2; g,,cV+
if(l==r) return ; u`bWn
mergeSort(data,temp,l,mid); '')G6-c/
mergeSort(data,temp,mid+1,r); 7y[B[$P
for(int i=l;i<=r;i++){ _Fz)2h,3
temp=data; Ku&(+e
} ,1~Zqprn
int i1=l; //J:p,AF
int i2=mid+1; ]G1j\ wnF
for(int cur=l;cur<=r;cur++){ `4k;`a
if(i1==mid+1) s{s0#g
data[cur]=temp[i2++]; 6,@M0CX
else if(i2>r) +ixDB0"\
data[cur]=temp[i1++]; >hQR
else if(temp[i1] data[cur]=temp[i1++]; +vU.#C_2
else 3M@>kIT8
data[cur]=temp[i2++]; +uT=Wb \
} W/\7m\B
} 66|lQE&n
dHp6G^Y
} L1F){8[
vo::y"
改进后的归并排序: il#rdJ1@t
e<p$Op
package org.rut.util.algorithm.support; ?0?'
CC)9Ks\
import org.rut.util.algorithm.SortUtil; kBONP^xI
A%GJ|h,i
/** ko5\*!|:lj
* @author treeroot 8p5'}Lq
* @since 2006-2-2 VqbiZOZ@
* @version 1.0 ]$L[3qA.
*/ +\W"n_PPy
public class ImprovedMergeSort implements SortUtil.Sort { >^ Y9p~
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private static final int THRESHOLD = 10; JQtH},Tr
<!+o8z]
/* ,88Y1|:X
* (non-Javadoc) `2@-'/$\I|
* xS(sR x+A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ee|@l3)
*/ >N,G@{FR
public void sort(int[] data) { CD[7h
int[] temp=new int[data.length]; *jJ62-o
mergeSort(data,temp,0,data.length-1); VLO>{"{'
} :?p{ga9
p0tv@8C>
private void mergeSort(int[] data, int[] temp, int l, int r) { 'sA&Pm
int i, j, k; z N
t7DK
int mid = (l + r) / 2; /tUl(Fp J`
if (l == r) 4/h2_
return; ]Yj>~k:K
if ((mid - l) >= THRESHOLD) Gg!))I+
mergeSort(data, temp, l, mid); jNyC%$
else y&CUT:M6
insertSort(data, l, mid - l + 1); 9.@(&
if ((r - mid) > THRESHOLD) fC-^[Af)
mergeSort(data, temp, mid + 1, r); p;5WLAF
else b9YpUm7#
insertSort(data, mid + 1, r - mid); +p[~hM6?
6
%=BYDF
for (i = l; i <= mid; i++) { JxvwquI
temp = data; =3T?U_u@
} }+lxja]C
for (j = 1; j <= r - mid; j++) { H,I}R
temp[r - j + 1] = data[j + mid]; :D,YR(])
} ew"Fr1UGYZ
int a = temp[l]; lvN{R{7>
int b = temp[r]; oby*.61?5l
for (i = l, j = r, k = l; k <= r; k++) { ;?[~]"
if (a < b) { [a`i{(!
data[k] = temp[i++]; 5{5ABV
a = temp; x'KsQlI/
} else { OP&[5X+Y
data[k] = temp[j--]; D!P?sq _5r
b = temp[j]; [yyV`&
} o2|(0uN'
} MvW>ktkU
} 5^Y/RS i
L,ra=SV F
/** =I5XG"",
* @param data N\fT6#5B
* @param l nZT@d;]U9
* @param i |-mazvA
*/ jgstx3
private void insertSort(int[] data, int start, int len) { \1Bgs^
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9?:S:Sq
} J#kdyBmuO
} w*
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} c]]F`B
} s6D-?G*u%8
H94.E|Q\+
堆排序: p3S c4
>ob/@
package org.rut.util.algorithm.support; w|HZI,~
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import org.rut.util.algorithm.SortUtil; ]M2<I#hF.
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/** 8F*
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* @author treeroot HZm
i?
* @since 2006-2-2 X2`>@GR/>
* @version 1.0 g@2.A;N0
*/ Z]Y4NO;
public class HeapSort implements SortUtil.Sort{ `#f=&S?k
caP
/* (non-Javadoc) |z'?3?,~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j+9
S
*/ R]Oy4U,f
public void sort(int[] data) { (*ng$zZ$
MaxHeap h=new MaxHeap(); ETOc4hMO
h.init(data); hkJZqUA
for(int i=0;i h.remove(); jE#8&P~
System.arraycopy(h.queue,1,data,0,data.length); CwvNxH#LVu
} /RM-+D:Y
W,~1KUTc
private static class MaxHeap{ 78)^vvn5~
k~#|8eLv
void init(int[] data){ Q8x{V_Pot
this.queue=new int[data.length+1]; K5>:WiY
for(int i=0;i queue[++size]=data; @QG1\W'
fixUp(size); `k&K"jA7$
} l:eN u}{&
} KV_Ga8hs
@"8QG^q8de
private int size=0; DKl7|zG4
}/spo3,6
private int[] queue; J7GsNFL
fYy.>m+P1
public int get() { ^0Q*o1W
return queue[1]; yxN!*~BvL
} \zU5G#LQ
?U08A{ c
public void remove() { e_], O_Z
SortUtil.swap(queue,1,size--); .@Uz/j?>
fixDown(1); [MS.5+1Y
} !j9i=YDb
file://fixdown mPin\-I
private void fixDown(int k) { B:~;7A\
int j; <gLtX[v!CL
while ((j = k << 1) <= size) { 05B+WJ1
if (j < size %26amp;%26amp; queue[j] j++; m;f?}z_\$
if (queue[k]>queue[j]) file://不用交换 }qhK.e
break; 5$U>M
SortUtil.swap(queue,j,k); YSo7~^1W"
k = j; N| Pm|w*?
} Ra5'x)m36)
} ^gzNP#A<'o
private void fixUp(int k) { "PaGDhS
while (k > 1) { fR4l4 GU?)
int j = k >> 1; M7R&J'SAY
if (queue[j]>queue[k]) t3$gwO$
break; JF%=Bc $C
SortUtil.swap(queue,j,k); 3|Sy'J0'K
k = j; C-u/{CP
} Ok&>[qu
} HY;?z`=
%uVJLz
} 1:zu$|%7
g@i>R>
} 4D$sFR|?t
*\KvcRMGUa
SortUtil: b',bi.FH
b0Ov+ )7#
package org.rut.util.algorithm; `?^w
rJZs
5g`
import org.rut.util.algorithm.support.BubbleSort; ZT8Ji?_n
import org.rut.util.algorithm.support.HeapSort; Lzx$"R-
import org.rut.util.algorithm.support.ImprovedMergeSort; 'S7@+kJ
import org.rut.util.algorithm.support.ImprovedQuickSort; w"agn}CK
import org.rut.util.algorithm.support.InsertSort; nFnF_
import org.rut.util.algorithm.support.MergeSort; QX.6~*m1
import org.rut.util.algorithm.support.QuickSort; noNF;zT
import org.rut.util.algorithm.support.SelectionSort; /Jf`x>eiH
import org.rut.util.algorithm.support.ShellSort; v7FRTrqjj
|vN@2h(|"
/** 8UT%:DlxQ
* @author treeroot F[D0x26^
* @since 2006-2-2 XYHCggy
* @version 1.0 M
|?p3%
*/ ?w37vsN
public class SortUtil { V/}>>4
public final static int INSERT = 1; qzt2j\v
public final static int BUBBLE = 2; I"32[?0
(;
public final static int SELECTION = 3; $Cd ;0gdv
public final static int SHELL = 4; nP\V1pgA
public final static int QUICK = 5; DJYXC,r
public final static int IMPROVED_QUICK = 6; !Vr45l
public final static int MERGE = 7; =j+oKGkoCa
public final static int IMPROVED_MERGE = 8; Ge:-|*F
public final static int HEAP = 9; 6~h1iY_~
M1]6lg[si
public static void sort(int[] data) { YD46Z~$
sort(data, IMPROVED_QUICK); _8b]o~[Z+
} ?e y&Un"
private static String[] name={ MAe<.DHY
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `x$}~rP&)!
}; 'CX.qxF1;p
n22hVw
private static Sort[] impl=new Sort[]{ xcZ%,7
new InsertSort(), M&djw`B
new BubbleSort(), Uk*;C
new SelectionSort(), iCnUnR{
new ShellSort(), TdP{{&'9
new QuickSort(), 3H'nRK},
new ImprovedQuickSort(), rw8J:?0x
new MergeSort(), nN=:#4
>Y
new ImprovedMergeSort(), pO/SV6N
new HeapSort() vbA7I<;
}; A2|o=mOH
))IgB).3M
public static String toString(int algorithm){ 7t-*L}~WA
return name[algorithm-1]; `@$"L/AJ
} B}q
X}j'L&{F@
public static void sort(int[] data, int algorithm) { 0?F@iB~1F
impl[algorithm-1].sort(data); MeI2i
} &@W4^-9
2&gVZ z
public static interface Sort { !/4V^H
public void sort(int[] data); c[h'`KXJf-
} g/l0}%
&=z1$ih>2\
public static void swap(int[] data, int i, int j) { o7Cnyy#:
int temp = data; lv00sa2z
data = data[j]; ~w1{zxs
data[j] = temp; fsrg2:kQ
} +(<n |~
} <RoX| zJw