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。 *gd?>P7\0
插入排序: :WK"-v
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package org.rut.util.algorithm.support; vv2vW=\
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import org.rut.util.algorithm.SortUtil; cebs.sF:
/** MegE--h
* @author treeroot =f4[=C$&`
* @since 2006-2-2 <G~}N
* @version 1.0 &2io^AP
*/ m"gni #
public class InsertSort implements SortUtil.Sort{ 1p7cv~#95
^)f{q)to
/* (non-Javadoc) ;-KAUgL2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >d8x<|D
*/ b^[W_y
public void sort(int[] data) { *L%6qxl`V
int temp; M5GY>3P$c
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f0uUbJ5
} eVw\v#gd
} [j)\v^m
} .M9d*qp`S
}+91s'/c
} >=-GD2WK
h4CTTe)
冒泡排序: ORGv)>C|
bQ-Gp;]
package org.rut.util.algorithm.support; E`Jp(gK9F
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import org.rut.util.algorithm.SortUtil; <w0NPrS]
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/** ixIV=#
* @author treeroot 0jxO |N2)
* @since 2006-2-2 lx\qp`w
* @version 1.0 0U82f1ei
*/ cGgM8
public class BubbleSort implements SortUtil.Sort{ _ PXG AS
tcBC!_vF
/* (non-Javadoc) xS6(K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =?/N5O(
*/ lGdM80f
public void sort(int[] data) { B4]AFRI
int temp; ,CJAzGBS
for(int i=0;i for(int j=data.length-1;j>i;j--){ xGYSi5}z
if(data[j] SortUtil.swap(data,j,j-1); EY+/.=$x
} _W)`cr
} 4$yV%[j
} TZ?Os4+
} qqnclqkw&
hi!L\yi
} m7$8k@r
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选择排序: ^"3\iA:
wL 4ZW8_
package org.rut.util.algorithm.support; 2R^O,Vu*W
s%eyW _
import org.rut.util.algorithm.SortUtil; wgCvD
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/** CF]i}xpWV
* @author treeroot =%!e(N'p
* @since 2006-2-2 N>+ P WE$
* @version 1.0 S8
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*/ &J8Z@^
public class SelectionSort implements SortUtil.Sort { uxWFM
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/* a%Uw;6|{
* (non-Javadoc) 41u*w2j
* !CVuw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <0CzB"Ap
*/ #EJhAJ
public void sort(int[] data) { fJaubDxa
int temp; J.#(gFBBl\
for (int i = 0; i < data.length; i++) { ]b 3/Es+
int lowIndex = i; {vs 4vS6
for (int j = data.length - 1; j > i; j--) { C\
tprnY
if (data[j] < data[lowIndex]) { l^.K'Q1~a
lowIndex = j; $tI]rU
} XC=%H'p
} Y[2Wt%2\6
SortUtil.swap(data,i,lowIndex); m23+kj)+VY
} g3Z:{@m
} vu=me?m?(
_w 5RK(
} J , V
pgT9hle/
Shell排序: t)` p@]j
m9Ax\lf
package org.rut.util.algorithm.support; ?AEd(_a!q
-;^;2#](g
import org.rut.util.algorithm.SortUtil; nSS>\$
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/** /D<"wF }@J
* @author treeroot _5mc('
* @since 2006-2-2 -
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* @version 1.0 O`WIkBV!
*/ oh6B3>>+
public class ShellSort implements SortUtil.Sort{ :-?Ct
Z,K7Ot0
/* (non-Javadoc) qz 9tr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~3gru>qI&
*/ wJgX/W
public void sort(int[] data) { n-$VUo
for(int i=data.length/2;i>2;i/=2){ -D^L}b
for(int j=0;j insertSort(data,j,i); EFAGP${F
} =+Im*mgNn
} h{k_6ym
insertSort(data,0,1); h4/X
0@l`
} d6`OXTD
3\AM=`
/** 4[TR0bM%
* @param data 9Y/L?km_(
* @param j [*)Z!)
* @param i ZPHXzi3j
*/ {XgnZ`*
private void insertSort(int[] data, int start, int inc) { 5o#Yt
int temp; ,_D"?o
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); h>alGLN>
} 'CXRG$D
} %K(0 W8&
} p~2UUmV
LvJGvj
} @wp4 |G
[ |[>}z:
快速排序: `2`fiKm
JS2nXs1
package org.rut.util.algorithm.support; ahJ1n<
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import org.rut.util.algorithm.SortUtil; =oX>Ph+ P
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/** S_v(S^x6
* @author treeroot M"{uX
* @since 2006-2-2 (vc|7DX M
* @version 1.0 8!mc@$Z
*/ >`'O7.R
public class QuickSort implements SortUtil.Sort{ e}0:"R%E
p_{("zQ
/* (non-Javadoc) O oSb>Y/4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]"F5;p;y
*/ /qU>5;
public void sort(int[] data) { k%P;w1
quickSort(data,0,data.length-1); ~9=aT1S|
} w8iR|TV
private void quickSort(int[] data,int i,int j){ @*MC/fe
int pivotIndex=(i+j)/2; C5W>W4EM
file://swap b.F^vv"]]
SortUtil.swap(data,pivotIndex,j); Vw#{C>
:!fG; )=
int k=partition(data,i-1,j,data[j]); WKmbNvN^
SortUtil.swap(data,k,j); K>2 #UzW
if((k-i)>1) quickSort(data,i,k-1); AW,OHSXh6
if((j-k)>1) quickSort(data,k+1,j); ,e`'4H
ifK%6o6
} PXzT6)
/** !:CJPM6j3
* @param data vyI%3+N@
* @param i ,RxYd6
* @param j 0)!Ll*L!p
* @return &\C [@_
*/ VR5fqf|*
private int partition(int[] data, int l, int r,int pivot) { (*\jbK
do{ i)ASsYG!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); k~3.MU
SortUtil.swap(data,l,r); in-C/m#
} hWo=;#B*
while(l SortUtil.swap(data,l,r); ]3Dl)[R
return l; ,xI%A,
(,;
} ;heHefbvvd
x;\wY'
} xJZ@DR,#
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改进后的快速排序: x9W(cKB'S
/mM2M-
package org.rut.util.algorithm.support; O
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import org.rut.util.algorithm.SortUtil; v$wBxCY
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/** 2F`cv1 M
* @author treeroot FG@-bV
* @since 2006-2-2 N_Akmh0D
* @version 1.0 <spZ! #o
*/ oU6y4yO
public class ImprovedQuickSort implements SortUtil.Sort { gEQNs\Jn
L
*e#<n_%R
private static int MAX_STACK_SIZE=4096; 1w(JEqY3h:
private static int THRESHOLD=10; xI*#(!x"G
/* (non-Javadoc) }/P5>F<H[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B;K`q
*/ !T,AdNa8
public void sort(int[] data) { 8}e,%{q
int[] stack=new int[MAX_STACK_SIZE]; ul f2vD
sj?3M@l95W
int top=-1; AJ^#eY5
int pivot; {yA$V0`N{
int pivotIndex,l,r; 76cG90!Z
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stack[++top]=0; cLY c6
stack[++top]=data.length-1; qU6nJi+-I
1xE]6he4{T
while(top>0){ Mg,:UC:
int j=stack[top--]; dq1:s1
int i=stack[top--]; #-% A[7Cdp
>wHxmq8F5<
pivotIndex=(i+j)/2; (b,[C\RBF
pivot=data[pivotIndex]; JwnQ0
e
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SortUtil.swap(data,pivotIndex,j); I zbU)ud
dsx]/49<
file://partition BvrB:%_:
l=i-1; fFvF\
r=j; Zk8|K'oHx
do{ 6]zd.W
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C[!MS5
SortUtil.swap(data,l,r); wCf~O'XLw
} bI)u/
while(l SortUtil.swap(data,l,r); r7]zQIE
SortUtil.swap(data,l,j); ig LMv+{
}N0Qm[R
if((l-i)>THRESHOLD){ PQKaqv}N
stack[++top]=i; Cxod[$8
stack[++top]=l-1; K$K^=>I"o
} @H>@[+S#
if((j-l)>THRESHOLD){ Cv
ejb+
stack[++top]=l+1; ?Iyo9&1&
stack[++top]=j; obrl#(\P
} 'J&f%kx"
v[plT2"s
} mGUO6>g
file://new InsertSort().sort(data); OA/WtQ5
insertSort(data); |tR
OL9b
} x_Jwd^`t!
/** R" )bDy?
* @param data %CUGm$nH
*/ 'I;!pUfVp
private void insertSort(int[] data) { km^^T_ M/
int temp; ]lw|pvtd
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); AcI,N~~
} VvFC -r,=G
} l\M_-:I+4
} VhjM>(
joKIrS0y
} r:&`$8$
53-v|'9'
归并排序: ;zM*bWh9
1&;QyTN
package org.rut.util.algorithm.support; -[U1]R
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import org.rut.util.algorithm.SortUtil; x8\A<(G_M=
J_Ltuso
/** Yt|6
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* @author treeroot YEkh3FrbwH
* @since 2006-2-2 6 3`{.yZ*z
* @version 1.0 &B!
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*/ +w@M~?>
public class MergeSort implements SortUtil.Sort{ ~%?`P/.o
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/* (non-Javadoc) |-V&O=!^+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1]IQg;q
*/ O+}qQNe<
public void sort(int[] data) { `wF8k{Pb
int[] temp=new int[data.length]; WD Fjp
mergeSort(data,temp,0,data.length-1); FnJ?C&xK
} ;nC.fBu
V=fEPM
private void mergeSort(int[] data,int[] temp,int l,int r){ it] E-^2>
int mid=(l+r)/2; p!k7C&]E
if(l==r) return ; |FD }e)
mergeSort(data,temp,l,mid); 5_XV%-wM
mergeSort(data,temp,mid+1,r); A,r*%&4~
for(int i=l;i<=r;i++){ vad12WrG<
temp=data; yG Wnod'
} pv^O"Bs
int i1=l; /Uo
y/}!
int i2=mid+1; "4vy lHIo
for(int cur=l;cur<=r;cur++){ Dfq(Iv
if(i1==mid+1) ;<G=M2
data[cur]=temp[i2++]; T3`ludm^u
else if(i2>r) tmqY2.
data[cur]=temp[i1++]; nqwAQhzy(
else if(temp[i1] data[cur]=temp[i1++]; 6s0_#wZC
else
~"UV]Udn
data[cur]=temp[i2++]; (JM4R8fR&
} %tG*C,l]
} It2" x;
)M__
t5L
} .U T@p
8]&i-VFof
改进后的归并排序: Q{B}ef
+cD!1IT:
package org.rut.util.algorithm.support; 6N)!aT9eo
3O7!`Nm@
import org.rut.util.algorithm.SortUtil; 7 ^w >Rj
NPFpq,P>
/** vN3Zr34
* @author treeroot wdUBg*X8
* @since 2006-2-2 ,t\* ZTt$
* @version 1.0 5)
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*/ pp7$J2s+j
public class ImprovedMergeSort implements SortUtil.Sort { ^pJ!isuqu
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private static final int THRESHOLD = 10; ChCrL[2
pv&y91
/* sZW^!z
* (non-Javadoc) oh$Q6G
* LBF 1;zjK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `'V4PUe
*/ XS$OyW_Q
public void sort(int[] data) { X^WrccNX
int[] temp=new int[data.length]; 7"8hC
mergeSort(data,temp,0,data.length-1); +[5.WC7J
} I4&::y^C
>Wz;ySEz
private void mergeSort(int[] data, int[] temp, int l, int r) { msVOH%wH
int i, j, k; LVJxn2x6
int mid = (l + r) / 2; sJ]taY ou
if (l == r) ;A#`]-i C
return; [,TkFbDq"J
if ((mid - l) >= THRESHOLD) JwJ7=P=c
mergeSort(data, temp, l, mid); PssMTEf
else 7EXI6jGJ|
insertSort(data, l, mid - l + 1);
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if ((r - mid) > THRESHOLD) o tk}y8
mergeSort(data, temp, mid + 1, r); U#3J0+!
else sP ls
zC[
insertSort(data, mid + 1, r - mid); -%L6#4m4o
1x[)/@.'f
for (i = l; i <= mid; i++) { }[M`uZ
temp = data; :UQTEdc{
} RIIitgV_
for (j = 1; j <= r - mid; j++) { g55`A`5%C
temp[r - j + 1] = data[j + mid]; h[PYP5{L
} +wkjS r`e
int a = temp[l]; +zy=50,
int b = temp[r]; D}vmwg@3
for (i = l, j = r, k = l; k <= r; k++) { gB<3-J1R
if (a < b) { 9Lr'YRl[W
data[k] = temp[i++]; `3:.??7N
a = temp; sqW*
pi
} else { %Qj;, #z
data[k] = temp[j--]; %Q.&ZhB
b = temp[j]; ZcaX'5}!S
} F+@5C:<?
} t*?0D\b
2
} %JLk$sP9y`
yrR1[aT
/** !%c'$f/
* @param data .-<k>9S7_
* @param l IKi5 v~bE
* @param i B9wPU1
*/ 8cA~R-
private void insertSort(int[] data, int start, int len) { aXL{TD:]
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {RF-sqce
} &B|D;|7H
} zD<or&6
} )HvnoUO0
} d'Zqaaf k%
;INW`b~
堆排序: AZmb!}m+d
435;Vns\n
package org.rut.util.algorithm.support; 9ksE>[7
2Y7)WPn
import org.rut.util.algorithm.SortUtil; +=:#wzK@
Z.M,NR
/** lv]hTH 4T
* @author treeroot Op_RzZP`
* @since 2006-2-2 H=\3Jj(4
* @version 1.0 I}t#%/'YA
*/ }X=[WCKU
public class HeapSort implements SortUtil.Sort{ IV)<5'v
Pcw6!xH
/* (non-Javadoc) LGl2$#x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (<)]sp2
*/ AhNq/?Q Q~
public void sort(int[] data) { LA`*_|}qcR
MaxHeap h=new MaxHeap(); ak;*W
h.init(data); A]DTUdL
for(int i=0;i h.remove(); 0$-xw
System.arraycopy(h.queue,1,data,0,data.length); HvVts\f
} fXc m|U,ho
Lliqj1&
private static class MaxHeap{ N"3b{Qio
$ >EYhLBa
void init(int[] data){ MX@_=Sp-
this.queue=new int[data.length+1]; l~M_S<4n
for(int i=0;i queue[++size]=data; A7n\h-b
fixUp(size); CXC`sPY
} f{FDuIln
} 8)4P Ll
o";Z$tAJkC
private int size=0; zF`c8Tsx])
rf$X>M=G
private int[] queue; rp0ZvEX
d`F&aC
public int get() { ? 8LXP
return queue[1]; 4vwTs*eB`
} et }T%~T
[AW"
D3
public void remove() { rW0FA
SortUtil.swap(queue,1,size--); kbMYMx.[
fixDown(1); DrO2 y
} ?! `=X>5
file://fixdown s%W<dDINl
private void fixDown(int k) { sx`O8t
int j; QV&D l_
while ((j = k << 1) <= size) { 67VT\f
if (j < size %26amp;%26amp; queue[j] j++; di>cMS 4 c
if (queue[k]>queue[j]) file://不用交换 L*~J%7
break; xa
pq*oj
SortUtil.swap(queue,j,k); 1Tm^
k = j; T16{_
} /, ! B2
} jb^N|zb
private void fixUp(int k) { oDU ;E
while (k > 1) { g2T -TG'd
int j = k >> 1; [!U?}1YQ
if (queue[j]>queue[k]) .;*s`t
break; -
h9?1vc7
SortUtil.swap(queue,j,k); .3MIcj=p
k = j; ,Y>Bex_v
} ,.qMEMm
} r9ww.PpNk#
f?'JAC*
} k+DR]icv
'FS?a
} :M6+p'`j
uI DuGrt
SortUtil: G3{=@Z1
1rDqa(7
package org.rut.util.algorithm; =%>oR
NwZ@#D#[ Y
import org.rut.util.algorithm.support.BubbleSort; (bh95X
import org.rut.util.algorithm.support.HeapSort; pf_mf.
import org.rut.util.algorithm.support.ImprovedMergeSort; T.qNCJmB
import org.rut.util.algorithm.support.ImprovedQuickSort; npNB{J[
import org.rut.util.algorithm.support.InsertSort; /*c\qXA5
import org.rut.util.algorithm.support.MergeSort; as>L[jyG/
import org.rut.util.algorithm.support.QuickSort; C,.Ee3T
import org.rut.util.algorithm.support.SelectionSort; *Otg*,\
import org.rut.util.algorithm.support.ShellSort; mI>,.&eo
]TyisaT
/** &JtV'@>v
* @author treeroot ^tCd L@$AS
* @since 2006-2-2 78/N
* @version 1.0 *>+,(1Fz
*/ E_bO9nRHV
public class SortUtil { Y
"VY%S^
public final static int INSERT = 1; {U_$&f9s
public final static int BUBBLE = 2; z$kenhFG/
public final static int SELECTION = 3; J:kmqk!
public final static int SHELL = 4; Yp:KI7
public final static int QUICK = 5; ($~RoQ=0S
public final static int IMPROVED_QUICK = 6; Y)}Rb6qGW
public final static int MERGE = 7; s$a09x
public final static int IMPROVED_MERGE = 8; iIP8`!
O
public final static int HEAP = 9; l}lIi8
g{P%s'%*
public static void sort(int[] data) { P8?Fm`
sort(data, IMPROVED_QUICK); pm9%%M$
} gB4U*D0[e~
private static String[] name={ V}zEK0n(6
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" p+Y>F\r&w
}; <dvy"Dx
+
Q6l*:<|c
private static Sort[] impl=new Sort[]{ Zw~+Pb
new InsertSort(), uy}%0vLo
new BubbleSort(), `3Uj{w/Q:L
new SelectionSort(), yOwA8^q
new ShellSort(), E=#0I]v[
new QuickSort(), %bdjBa}
new ImprovedQuickSort(), "1-}A(X
new MergeSort(), _IdRF5<4
new ImprovedMergeSort(), HWVtop/
new HeapSort() o#hjvg
}; L*x[?x;)@
\2vg{
public static String toString(int algorithm){ nO)X!dp}J
return name[algorithm-1]; =k oSUVO0
} 51QRM32Y
7k( Kq5w.
public static void sort(int[] data, int algorithm) { t&(PN%icD
impl[algorithm-1].sort(data); gy;+_'.j
} :Pv*,qHE
+d%L\^?F
public static interface Sort { oy;K_9\
public void sort(int[] data); =2
*rA'im
} 1\r|g2Z
:
9Fr3pRIJ
public static void swap(int[] data, int i, int j) { po}F6m8bX
int temp = data; 6AWKLFMV
data = data[j]; {N#KkYH{"
data[j] = temp; DSj(]U~r
} YQS5P#
} i>joT><B