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。 .xqi7vVHZ
插入排序: R?u(aY)P
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package org.rut.util.algorithm.support; xO_>%F^?
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import org.rut.util.algorithm.SortUtil; rf H1Zl
/** (zFqb,P
* @author treeroot Mf14> `<`
* @since 2006-2-2 wU|@fm"
* @version 1.0 #czTX%+9(e
*/ A|LO!P,w
public class InsertSort implements SortUtil.Sort{ 3Ewdu
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/* (non-Javadoc) tAq0Z)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T9R#.y,
*/ .K84"Gdx
public void sort(int[] data) { lrZ]c:%k
int temp; G_?U?:!AC
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S?CT6moXA
} )!v"(i.5Xo
} \dJhDR
} T; tY7;<
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} 7;|"1H:cmw
keC'/\e
冒泡排序: YzjRD:
c #TY3Z|
package org.rut.util.algorithm.support; PS"rXaY
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import org.rut.util.algorithm.SortUtil; ^2}HF/
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/** f2[R2sto@
* @author treeroot q{`1[R
* @since 2006-2-2 M?YNK]
* @version 1.0 5IUdA?
*/ "x R6~8
public class BubbleSort implements SortUtil.Sort{ }$z(?b
Eu' ;f_s
/* (non-Javadoc) ]7}!3 m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~-Kx^3(#
*/ 2b7-=/[6
public void sort(int[] data) { fD@d.8nXd
int temp; zHA::6OgPN
for(int i=0;i for(int j=data.length-1;j>i;j--){ nHm29{G0
if(data[j] SortUtil.swap(data,j,j-1); l6#Y}<tq
} _%R^8FjH*
} +r'&6Me!
} kf>3T@
} 8OZasf
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} VxDIA_@y
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选择排序: C]2-V1,ZX
AuK$KGCI=
package org.rut.util.algorithm.support; )1!<<;@0
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import org.rut.util.algorithm.SortUtil; 27N;>
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/** OW#0$%f
* @author treeroot 0e<>2AL
* @since 2006-2-2 %d];h
* @version 1.0 <[\I`kzq
*/ keLeD1
public class SelectionSort implements SortUtil.Sort { d)1gpRp
AE>W$x8P
/* Bk\Y v0
* (non-Javadoc) Wz.iDRFl
* w\s`8S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :se$<d%
*/ xgMh@@e
public void sort(int[] data) { l#enbQ`-~
int temp; |hxiARr4
for (int i = 0; i < data.length; i++) { U Buh'?j
int lowIndex = i; lXTE#,XVf
for (int j = data.length - 1; j > i; j--) { i<F7/p "-
if (data[j] < data[lowIndex]) { MrB#=3pT
lowIndex = j; "x9yb0
} z |llf7:
} 4
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SortUtil.swap(data,i,lowIndex); nrMW5>&-`
} >)<?
} }P?e31@:
0&sa#g2
} %?+vtX
+ZNOvcsV
Shell排序: \1G'{#Q
,B'=$PO%
package org.rut.util.algorithm.support; y:98}gW`n
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import org.rut.util.algorithm.SortUtil; K7`6G[RMb
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/** DAb/B
* @author treeroot r|UJJ9i
* @since 2006-2-2 1l$C3c
* @version 1.0 pM@8T25=
*/ GqxnB k1
public class ShellSort implements SortUtil.Sort{ dvjj"F'Bf
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/* (non-Javadoc) 0]bt}rh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fY9+m}$S$
*/ exJc[G&t(
public void sort(int[] data) { ^%,{R},s
for(int i=data.length/2;i>2;i/=2){ YA$YT8iMe
for(int j=0;j insertSort(data,j,i); ,5v'hG
} =xm7i#1
} IWu=z!mO
insertSort(data,0,1);
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} x 4_MbUe
^+D/59I
/** I`{*QU
* @param data K bLSK
* @param j $h
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* @param i %CHw+wT&
*/ Cd)g8<
private void insertSort(int[] data, int start, int inc) { 0 YFXF
int temp; 3[u-
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lo>9 \ Po
} -$<oY88
} )nO ^Ay
} }R<t=):
t9U6\ru
} V?S}%-a
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快速排序: syBpF:`-W
Lbrl CB+
package org.rut.util.algorithm.support; 7he,(V
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*
import org.rut.util.algorithm.SortUtil; ]]K?Q
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/** */h(4Hz
* @author treeroot a6n@
* @since 2006-2-2 9SsVJ<9,R
* @version 1.0 [@lK[7 u
*/ |1!fuB A
public class QuickSort implements SortUtil.Sort{ tV(iC~/
-:%QoRCy
/* (non-Javadoc) C/Q20
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yS~Y"#F!.
*/ UUDUda
public void sort(int[] data) { +@?Q "B5u}
quickSort(data,0,data.length-1); >`UqS`YQK
} dP_QkO
private void quickSort(int[] data,int i,int j){ Ag9GYm
int pivotIndex=(i+j)/2; 1ARtFR2C{b
file://swap }{N#JTmjB#
SortUtil.swap(data,pivotIndex,j); 'O)v@p "
c
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int k=partition(data,i-1,j,data[j]); ):PN0.H8
SortUtil.swap(data,k,j); xF!IT"5D
if((k-i)>1) quickSort(data,i,k-1); wA$7SWC
if((j-k)>1) quickSort(data,k+1,j); f4 S:L&
xcw:H&\w6
} Oh1U=V2~
/** ]7_>l>
* @param data Hj>9 #>b
* @param i M}o.= Iqa
* @param j zNX=V!$
* @return {mD0ug
*/ Db Qp(W0
private int partition(int[] data, int l, int r,int pivot) { 2x<BU3
do{ fQib?g/G
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); M
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SortUtil.swap(data,l,r); n R, QG8
} THq}>QI
while(l SortUtil.swap(data,l,r); -Ct+W;2
return l; c9[{P~y
} 3iw3:1RZUZ
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} <~uzHg%Y
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改进后的快速排序: tZ[9qms^_
d[l8qaD
package org.rut.util.algorithm.support; B bmw[Qf\
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import org.rut.util.algorithm.SortUtil; DL V ny]
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/** xBxiBhqzF
* @author treeroot 3y.+03
W
* @since 2006-2-2 @xdtl{5G
* @version 1.0
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*/ JvXuN~fI{[
public class ImprovedQuickSort implements SortUtil.Sort { poafGoH-Y
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private static int MAX_STACK_SIZE=4096; @lDnD%vZ`
private static int THRESHOLD=10; n>u_>2Ikkj
/* (non-Javadoc) 9<rs3 84
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v+x<X5u
*/ z{3`nd,
public void sort(int[] data) { h$`m0-'
int[] stack=new int[MAX_STACK_SIZE]; I@m(}
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int top=-1; c=tbl|Cq
int pivot; }5PC53q
int pivotIndex,l,r; 'yH
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stack[++top]=0; vX>{1`e{S
stack[++top]=data.length-1; ,$t1LV;o=
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while(top>0){ tb?TPd-OY
int j=stack[top--]; @:w^j0+h
int i=stack[top--]; -`5]%.E&8
xT&/xZLT
pivotIndex=(i+j)/2; A\S=>[ar-
pivot=data[pivotIndex]; p,z>:3M
uzQj+Po
SortUtil.swap(data,pivotIndex,j); VOj7Tz9UD
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file://partition cPZ\iGy
l=i-1; F6~
;f;
r=j; /D9#v1b
do{ _}47U7s8
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); jl}9R]Y_2
SortUtil.swap(data,l,r); J1(SL~e],
} ~c v|,
while(l SortUtil.swap(data,l,r); +vJ}'uR3P
SortUtil.swap(data,l,j); g
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if((l-i)>THRESHOLD){ N>EMVUVS
stack[++top]=i; ,k.")
stack[++top]=l-1; 0
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} u `w w
if((j-l)>THRESHOLD){ rhOxyY0
stack[++top]=l+1; U= GJuixy
stack[++top]=j; =W')jKe0
} umuj>
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} Heqr1btK
file://new InsertSort().sort(data); gcwJ{&
insertSort(data); Y/UvNb<lK
} Rmn|!C%%K
/** Zt41f PQ
* @param data /kr|}`#
Z
*/ Z/ml,4e
private void insertSort(int[] data) { u)EtEl7Wq
int temp; jHT^I
as
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _t]Q*i0p
} z{BgAI,
} GNHXtu6
} uUp>N^mmVH
4#W$5_Ny
} L}Sb0 o.
)/!HI0TU
归并排序: hyPS 6Y'1
^3vI
NF
package org.rut.util.algorithm.support; ,e 7
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import org.rut.util.algorithm.SortUtil; ;K l'[~z
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/** 0 7qjWo/t
* @author treeroot |Z>}#R!,P
* @since 2006-2-2 1:7fV@jw
* @version 1.0 PY4">~6\i
*/ OPUrz ?p2C
public class MergeSort implements SortUtil.Sort{ {gEz;:!):
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/* (non-Javadoc) G?~Yw'R^8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #Q_Scxf
*/ !j #8zN
public void sort(int[] data) { u*\QVOF
int[] temp=new int[data.length]; dw}ge,bBic
mergeSort(data,temp,0,data.length-1); Tl"r#
} oEZhKVyc.y
J7WNgl%
u
private void mergeSort(int[] data,int[] temp,int l,int r){ KX\=wFbP)
int mid=(l+r)/2; E rA*a3
if(l==r) return ; 9;*B*S~znW
mergeSort(data,temp,l,mid); DV?c%z`YO
mergeSort(data,temp,mid+1,r); ae3 Gn}tf
for(int i=l;i<=r;i++){ 0ZD)(ps|
temp=data; =<(6yu_
} `v(!IBP|
int i1=l; :zIB3nT^
int i2=mid+1; JC$_Pg!
for(int cur=l;cur<=r;cur++){ g]MgT-C|
if(i1==mid+1) | LZ+_
data[cur]=temp[i2++]; G a$2o6
else if(i2>r) @~=d4Wj6
data[cur]=temp[i1++]; FS)C<T]t
else if(temp[i1] data[cur]=temp[i1++]; 'SE5sB
else &-IkM%_A9
data[cur]=temp[i2++]; S_AN.8T
} B;iJ$gt]
} phA{jJy?
OS(Ua
} w?fq%-6f*
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改进后的归并排序: R SWw4}
YuO!Y9iEm
package org.rut.util.algorithm.support; [ x.]
q2Sc{E>[
import org.rut.util.algorithm.SortUtil; A]'XC"lS
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/** 2S@Cj{R(
* @author treeroot nYC S %\"
* @since 2006-2-2 ?:vB_@
* @version 1.0 {^:i}4ZRl
*/ ^5!"[RB\
public class ImprovedMergeSort implements SortUtil.Sort { ?*q-u9s9
rV%;d[LB
private static final int THRESHOLD = 10; ki`ur%h
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/* $Vs5d=B
* (non-Javadoc) 8v^AVg
* N#Nc{WU'B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?$\sMkn
*/ PEtr8J$uB
public void sort(int[] data) { 5}9rpN{y
int[] temp=new int[data.length]; <pT1p4T<
mergeSort(data,temp,0,data.length-1); Y!u">M#@
} dqt}:^L*0g
zLS?:yq
private void mergeSort(int[] data, int[] temp, int l, int r) { zU|'IW&
int i, j, k; {oo(HD;5
int mid = (l + r) / 2; iqd7
if (l == r) 2mthUq9b*
return; h5E<wyd96.
if ((mid - l) >= THRESHOLD) caTKi8
mergeSort(data, temp, l, mid); ?|<p^:
else \rbvlO?}
insertSort(data, l, mid - l + 1); 8Sf}z@~]
if ((r - mid) > THRESHOLD) ~fpk`&nhe
mergeSort(data, temp, mid + 1, r); aHles5
else sPX~>8}|VP
insertSort(data, mid + 1, r - mid); 'A/{7*,
Co<F<eXe
for (i = l; i <= mid; i++) { B]#iZ,Tp
temp = data; #@M'*X_%}K
} Ao9=TC'v$'
for (j = 1; j <= r - mid; j++) { riglEA[^
temp[r - j + 1] = data[j + mid]; FePWr7Ze
} RDqQ6(e"
int a = temp[l]; :WSszak
int b = temp[r]; OOz;/kay
for (i = l, j = r, k = l; k <= r; k++) { y<8o!=Tb5
if (a < b) { @A%\;oo
data[k] = temp[i++]; #@uF?8u
a = temp; %SMP)4Y/R
} else { 59_VC('
data[k] = temp[j--]; b~rlh=(o#_
b = temp[j]; Eo<N
} @7Nc*-SM
} 'yAHB* rQR
} a/q8v P
+\B.3%\-
/** +227SPLd
* @param data !?{%9
* @param l C #@5:$
* @param i S)@) @3
*/ _~b]/]|z#N
private void insertSort(int[] data, int start, int len) { OimqP
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);
(Vy`u)gG
} tjDCfJx*
} w}(Ht_6q{
} }~NWOJ3;
}
{0} Q5
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堆排序: B}h8c
\v.YP19
package org.rut.util.algorithm.support; .t%`"C
^ G>/;mZ
import org.rut.util.algorithm.SortUtil; =/^{Pn
FPuF1@K
/** j2!^iGS}
* @author treeroot z]Mu8
* @since 2006-2-2 6Y=MW{=F
* @version 1.0 `SESj)W(y
*/ 6:Zd,N=
public class HeapSort implements SortUtil.Sort{ l$!g#?w
^: V6=
/* (non-Javadoc) (qy82F-|2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x4S0C[k
*/ l`<u\],
public void sort(int[] data) { 0o&c8?@j
MaxHeap h=new MaxHeap(); - z"D_5
h.init(data); l*4_
for(int i=0;i h.remove(); D5fhOq+g
System.arraycopy(h.queue,1,data,0,data.length); i<uk}
} P*8DM3':
)@.6u9 \
private static class MaxHeap{ UYOR@x #
lJXihr
void init(int[] data){ <nT).S>+
this.queue=new int[data.length+1]; x5nw/''[2
for(int i=0;i queue[++size]=data; f5|Ew&1EP
fixUp(size); 1ml{oqNj
} vWpkU<&3|
} A/U, |
Z^vcODeC$
private int size=0; iN@+,]Yjl
JlN<w
private int[] queue; ' +[fJ> Le
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public int get() { Mhj.3nN
return queue[1]; km#Rh^
} oSqkAAGz\
79Si^n1\
public void remove() { K9N\E"6ZP
SortUtil.swap(queue,1,size--); 5"&{Egc_
fixDown(1); ;K<W<v5m0N
} N2S7=`5/T
file://fixdown roG f
&
private void fixDown(int k) { Lr`G. e
int j; Sg}]5Mn`
while ((j = k << 1) <= size) { aJ}Cqk
if (j < size %26amp;%26amp; queue[j] j++; FrBJv<
if (queue[k]>queue[j]) file://不用交换 /\1MG>#K
break; V9i[dF
SortUtil.swap(queue,j,k); VWR6/,N^_
k = j; (GJW3
} T*sB Wn'am
} W"L;8u
private void fixUp(int k) { d|(@#*{T]
while (k > 1) { -&\?Q_6
int j = k >> 1; a8!/V@a
if (queue[j]>queue[k]) _3?7iH
break; V:8ph`1
SortUtil.swap(queue,j,k); yzQ^KqLH
k = j; %?[H=v(b
} Yhkn(k2
} ^l"
{:r8X
} c'r7sI%Yi
qdeS*rp\
} -P>f2It
;F!wyTF>}
SortUtil: 92HxZ*t7km
d;10[8:5=
package org.rut.util.algorithm; R@)L@M)u;
Vr=c06a2
import org.rut.util.algorithm.support.BubbleSort; U[ $A=e?\Y
import org.rut.util.algorithm.support.HeapSort; N [iv.B
import org.rut.util.algorithm.support.ImprovedMergeSort; ,5L[M&5
import org.rut.util.algorithm.support.ImprovedQuickSort; qhiO( !jK
import org.rut.util.algorithm.support.InsertSort; Z#lZn!EbK
import org.rut.util.algorithm.support.MergeSort; 4-: TQp(
import org.rut.util.algorithm.support.QuickSort; `d[ja,
import org.rut.util.algorithm.support.SelectionSort; }6V` U9^g
import org.rut.util.algorithm.support.ShellSort; 3bp'UEF^k
oAgO3x
/** f}1R,N_fC
* @author treeroot +u:Q+PkM
* @since 2006-2-2 ,TAzJ
* @version 1.0 9e|]H+y
*/ ^"!j m
public class SortUtil { ]M;aVw<!
public final static int INSERT = 1; tzeS D C
public final static int BUBBLE = 2; aN5 w
public final static int SELECTION = 3; b8@gv OB
public final static int SHELL = 4; s-He
public final static int QUICK = 5; BiUOjQC#
public final static int IMPROVED_QUICK = 6; .v3~2r*&
public final static int MERGE = 7; YQI&8~z
public final static int IMPROVED_MERGE = 8; T]%:+_,
public final static int HEAP = 9; phA^ kdW
$m;rOKVU
public static void sort(int[] data) { KF[P
/cFI
sort(data, IMPROVED_QUICK); MH>CCT
} >dW~o_u'QN
private static String[] name={ i$A0_ZJKjZ
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =A,6KY=E
}; }I\hOL
\*V`w@
private static Sort[] impl=new Sort[]{ Z+< zKn}
new InsertSort(), k-b0Eogp]
new BubbleSort(), 2vit{
new SelectionSort(), PfI~`ke
new ShellSort(), buRK\C
new QuickSort(), "Oh(&N:U
new ImprovedQuickSort(), iS{8cN3R
new MergeSort(), y:N
QLL>
new ImprovedMergeSort(), >e7w!v]
new HeapSort() ;nPjyu'g
}; =2z9Aq{
P%6-W5<
public static String toString(int algorithm){ + W ?
/A]
return name[algorithm-1]; ad1%"~1
} $Y!$I.+
_[,oP s:+
public static void sort(int[] data, int algorithm) { 'Zdjd]
impl[algorithm-1].sort(data); xi]qdiA
} I3A@0'Vm;L
Rmrv@.dr!
public static interface Sort { >!vb ;a!
public void sort(int[] data); B!=JRfT
} u*ZRU
4U
fBptjt_
public static void swap(int[] data, int i, int j) { TqM(I[J7\
int temp = data; R~$W
data = data[j]; fJ3*'(
data[j] = temp; ?=%Q$|]-
} '=_}&
} 7B`,q-x.