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。 ;mvVo-r*q
插入排序: iRbe$v&N
c*(^:#"9
package org.rut.util.algorithm.support; 0/9]TIc
ivyaGAF}+o
import org.rut.util.algorithm.SortUtil; _x|.\j
/** YPf?
* @author treeroot `b%lojT.
* @since 2006-2-2 1X&jlD?
* @version 1.0 4 Tw~4b
*/ >[;=c0(
public class InsertSort implements SortUtil.Sort{ Vu=/<;-N
C,GZ
/* (non-Javadoc) t,IOq[Vtk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8ZLHN',
*/ .{} 8mFi1
public void sort(int[] data) { qZ&~&f|>e
int temp; i];P!Gm
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @BF1X.4-+
} KROD(
} py+\e"s
} S(?A3 H
[[zNAq)"
} _SJ:|I
2#r4dr0
冒泡排序: :tI
F*pC
,v,rY'
package org.rut.util.algorithm.support; 0H]{,mVs
a@d 15CN
import org.rut.util.algorithm.SortUtil; RHMXPsj
Lj9RF<39g
/** t(9q6x3|e
* @author treeroot q=V'pML
* @since 2006-2-2 x!\q69nd v
* @version 1.0 Q2uV/M1?
*/ [/%N2mj
public class BubbleSort implements SortUtil.Sort{ e}S+1G6r)
75lh07
/* (non-Javadoc) ^gZ,A]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d7
H *F
*/ TlRc8r|
public void sort(int[] data) { ^|]Dg &N.
int temp; rp{|{>'`.q
for(int i=0;i for(int j=data.length-1;j>i;j--){ x3Y)l1gh
if(data[j] SortUtil.swap(data,j,j-1); b*M?\ aA
} tiHR&v
} q$mc{F($D
} upL3M`
} I
"~.p='
Z0m`%(MJa
} sA77*T
v{fcQb
选择排序: i i-AE L
y& 1@d+Lf
package org.rut.util.algorithm.support; ?1a9k@[t
% hvK;B?Y|
import org.rut.util.algorithm.SortUtil; Jk6}hUH,
.\glNH1d
/** T9H*]LxK
* @author treeroot 1{
%y(?`
* @since 2006-2-2 qS FtQ4
* @version 1.0 JcA+ztPU
*/ F!wz{i6\h
public class SelectionSort implements SortUtil.Sort { c$%*p
(zY
nGkSS_X
/* =@?[.`
* (non-Javadoc) mpMAhm:
* (rkg0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X3X_=qzc
*/ G9 O6Fi
public void sort(int[] data) { ow.!4kx{ d
int temp; !NkCki"W
for (int i = 0; i < data.length; i++) { ACdPF_Y]
int lowIndex = i; h%Nd89//
for (int j = data.length - 1; j > i; j--) { ,7]hjf_h
if (data[j] < data[lowIndex]) { -` U|5
lowIndex = j; EZ]4cd/i
} EN2SI+
} U5OX.0
SortUtil.swap(data,i,lowIndex); pUb1#=
} <78|~SKAV
} _wS=*-fT
$2?AJ/2r$b
} 0!_?\)X
R=lw}jH [Z
Shell排序: ;*M@LP{*L
'#V@a
package org.rut.util.algorithm.support; _>Raw
7RL J
import org.rut.util.algorithm.SortUtil; MQ-u9=ys
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/** nQjpJ
/=
* @author treeroot v{VF>qEP
* @since 2006-2-2 og5VB
* @version 1.0 ehr-o7](
*/ *WQ?r&[_'
public class ShellSort implements SortUtil.Sort{ gM\>{ihM'
D=TS IJ@
/* (non-Javadoc) SG&,o=I$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ir_XU/ve
*/ $`E?=L`$
public void sort(int[] data) { q[,p#uJ]
for(int i=data.length/2;i>2;i/=2){ &uK(. @
for(int j=0;j insertSort(data,j,i); qTr P@F4`g
} Q=`yPK>{$N
} K)7T]z`
insertSort(data,0,1); l<f9$l^U
} -AdDPWn
/I=|;FGq
/** >.d/@3
'
* @param data o$sD9xx
* @param j
?<EzILM
* @param i si]VM_w6
*/ nn_O"fZi
private void insertSort(int[] data, int start, int inc) { ]?tRO
int temp; =9GALoGL
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c$Kc,`2m7
} :o>=^N
} vW1^
} Y 3BJ@sqz
7~e,"^>T
} &Q883A
J
w\bwa!3Y
快速排序: )4L2&e`k)(
p"ZvA^d\
package org.rut.util.algorithm.support; nF <K84
uL`#@nI
import org.rut.util.algorithm.SortUtil; !C#oZU]P
hG?y)g\A
/** ]#)(D-i
* @author treeroot H5}61 JC/z
* @since 2006-2-2 'f\9'v
* @version 1.0 /?'~`4!(
*/ ("2X8(3z
public class QuickSort implements SortUtil.Sort{ M:/NW-:
{EoYU\x
/* (non-Javadoc) .Vbd-jr'M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n1."Qix0
*/ .SD-6GVD
public void sort(int[] data) { _O`p (6
quickSort(data,0,data.length-1); h0tiWHw
} P R%)3
private void quickSort(int[] data,int i,int j){
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int pivotIndex=(i+j)/2; MJXnAIG?2
file://swap Qr$'Q7
SortUtil.swap(data,pivotIndex,j); :y-;V
.<%tu 0
int k=partition(data,i-1,j,data[j]); >G6kF!V
SortUtil.swap(data,k,j); >1j#XA8
if((k-i)>1) quickSort(data,i,k-1); 1=R$ RI
if((j-k)>1) quickSort(data,k+1,j); 9zwD%3Ufn
L|CdTRgRCB
}
k pgA2u7
/** #n>U7j9`O
* @param data .G{cx=;
* @param i .l1x~(
* @param j ?+t;\
* @return [ohLG_9
*/ FS1\`#Bm)
private int partition(int[] data, int l, int r,int pivot) { 0cS$S Mn{
do{ U>2KjZB
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %R0 Wq4}
SortUtil.swap(data,l,r); GW,EyOE+~
} :#YC_
id
while(l SortUtil.swap(data,l,r); |?T=4~b
return l; ihrf/b
} fDy*dp4z
Bl b#h
} 0/R;g~q@
f .O^R~,
改进后的快速排序: Nny*C`uDF
;ElCWs->\
package org.rut.util.algorithm.support; J@5iD
YSP\+ZZ
import org.rut.util.algorithm.SortUtil; ]Dq6XR
!85bpQ.
/** Tb i?AJa}
* @author treeroot YV.' L
* @since 2006-2-2 *yhA8fJ
* @version 1.0 1>Sfv|ZP,
*/ )'+[,z ;s
public class ImprovedQuickSort implements SortUtil.Sort { _
$F=A
w+)${|N?
private static int MAX_STACK_SIZE=4096; aopPv&jY
private static int THRESHOLD=10; 5P!ZGbG
/* (non-Javadoc) /e2zH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \S;[7T
*/ $JY\q2
public void sort(int[] data) { OJ&'Z}LB
int[] stack=new int[MAX_STACK_SIZE]; [G}dPXD
wn[)/*(,$(
int top=-1; L$PbC!1
int pivot; )>ZT{eF
int pivotIndex,l,r; n41#
$g>bp<9v4
stack[++top]=0; syX?O'xJ
stack[++top]=data.length-1; clvg5{^q[
~+\=X`y
while(top>0){ poQ_r<I
int j=stack[top--]; ^#R`Uptib
int i=stack[top--]; +f/
I>9G
NY.Cr.}
pivotIndex=(i+j)/2; IBa0O|*6
pivot=data[pivotIndex]; >?^oxB"<Gc
5M5Bm[X
SortUtil.swap(data,pivotIndex,j); 4/(#masIL
eo]nkyYDP
file://partition FyEKqYl
l=i-1; 1/-3m Po
r=j; %0Ur3
do{ &~_F2]oM
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,WyEwc]
SortUtil.swap(data,l,r); p/Ul[7A4e
} KU8,8:yY
while(l SortUtil.swap(data,l,r); @aS)=|Ls\
SortUtil.swap(data,l,j); 1V2]@VQF
9k6s
if((l-i)>THRESHOLD){ cO5F=ZxR
stack[++top]=i; );!ND%
stack[++top]=l-1; \TP$2i%W
} s{^B98d+W
if((j-l)>THRESHOLD){ tD.#*.7
stack[++top]=l+1; zH1;h
stack[++top]=j; kK75 (x
} J1w[gf]J
fG0ZVV!
} KdoI
file://new InsertSort().sort(data); ]aPf-O*
insertSort(data); do8[wej<:
} ](JrEg$K
/** 6_`Bo%
* @param data f/Y&)#g>k
*/ 3q%z
private void insertSort(int[] data) { =`+D/
W\[Y
int temp; &{j!!LL
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?M:>2wl
} i]Mem M-
} 9^/Y7Wp/@
} a"@f< wU~
0Md>-H;ZY
} _$UJ'W})/
U`6|K$@
归并排序: O:0{vu9AQ
~xqiasE#K
package org.rut.util.algorithm.support; &PJ;B)b
xL15uWk-
import org.rut.util.algorithm.SortUtil; *O[/KR%
Z
)c\B
/** |^1g*fy?
* @author treeroot 7^i7U-A<A
* @since 2006-2-2 WWpMuB_G
* @version 1.0 %_|KiW
*/ Hhtl~2t!0
public class MergeSort implements SortUtil.Sort{ D&FDPaJM
Q"I(3 tp9[
/* (non-Javadoc) bUcp8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `}ak]Z_
*/ ;a?<7LIx
public void sort(int[] data) { uB)q1QQsqp
int[] temp=new int[data.length]; `t/j6e]
mergeSort(data,temp,0,data.length-1); _*H Hdd5I
} CR$wzjP j
\ ITd\)F%N
private void mergeSort(int[] data,int[] temp,int l,int r){ ec;
int mid=(l+r)/2; zTc;-,
if(l==r) return ; l>;hQ h
mergeSort(data,temp,l,mid); 4$iS@o|
mergeSort(data,temp,mid+1,r); (xG%H:6,
for(int i=l;i<=r;i++){ 4 bk`i*-O
temp=data; [RXLR#
} K+)3 LR^
int i1=l; 6,5h4[eF*
int i2=mid+1; NFTv4$5d
for(int cur=l;cur<=r;cur++){ rXW.F'=K6
if(i1==mid+1) a{xJ#_/6
data[cur]=temp[i2++]; qy'-'UlIr
else if(i2>r) {dxFd-K3
data[cur]=temp[i1++]; tMw65Xei6b
else if(temp[i1] data[cur]=temp[i1++]; 4FzTf7h^
else 9D14/9*(dU
data[cur]=temp[i2++]; ~Eg]Auk7
} },d^y:m
} K~d'*J-
ymm]+v5S.]
} dU9;sx
_&]7
改进后的归并排序: yP7b))AW9
R3G\Gchd
package org.rut.util.algorithm.support; f"Iui
[~8U],?1
import org.rut.util.algorithm.SortUtil; t]SB.ja
-+[Lc_oNPx
/** ;j9%D`u<
* @author treeroot *OA(v^@tx7
* @since 2006-2-2 6CFnE7TQf
* @version 1.0 nFJW\B&(`
*/ f+9eB
public class ImprovedMergeSort implements SortUtil.Sort { wn@~80)$
Gy\]j
private static final int THRESHOLD = 10; (l%?YME
}<~(9_+
/* <%YW/k"o
* (non-Javadoc) =6U5^+|d
* x1Gx9z9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2OUx@Vj
*/ dm}1"BU<
public void sort(int[] data) { lW5Lwyt8
int[] temp=new int[data.length]; E0I/]0
mergeSort(data,temp,0,data.length-1); _]@u)$
} cD]H~D}M
rG?5z"
private void mergeSort(int[] data, int[] temp, int l, int r) { q;#AlquY @
int i, j, k; ;SE*En
int mid = (l + r) / 2; GZi`jp
if (l == r) gM&O dT+i
return; @2T8H
if ((mid - l) >= THRESHOLD) }vh
<x6
mergeSort(data, temp, l, mid); `V9bd}M%~;
else H<|}pZ
insertSort(data, l, mid - l + 1); S"*k#ao
if ((r - mid) > THRESHOLD) B9|s`o)!
mergeSort(data, temp, mid + 1, r); %l8!p'a
else LBq2({="
insertSort(data, mid + 1, r - mid); ftpPrtaP
a+HK
fK
for (i = l; i <= mid; i++) { O#k; O*s'
temp = data; |= cc >]
} X'b3CS4
for (j = 1; j <= r - mid; j++) { cO]w*Hti
temp[r - j + 1] = data[j + mid]; rmggP(
} 2pmj*Y3"8
int a = temp[l]; K&&T:'=/
int b = temp[r]; 3ibQbk
for (i = l, j = r, k = l; k <= r; k++) { {X<g93
if (a < b) { j5D Cc,s
data[k] = temp[i++]; C7F\Y1Wj
a = temp; OCu_v%G0
} else { 1Du5Z9AM
data[k] = temp[j--]; "Bwz
Fh
b = temp[j]; 0\U*
} a>l,H#w*vW
} Tv1oy%dK
} s<LnUF1b
x"sbm
/** D7nK"]HG;l
* @param data O[= L#wi
* @param l 8Tg1 >q<
* @param i K !ILO
*/ 3Qd/X&P
private void insertSort(int[] data, int start, int len) { TO]7cC
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }J6:D]Q
} ^;ZpK@Luk
} -HGRrWS
} Yr"Of*VNH
} &[{sA;
)C"ixZ>2xQ
堆排序: $1 B?@~&
0R? @JC
package org.rut.util.algorithm.support; h! uyTgq
Y=|p}>.}
import org.rut.util.algorithm.SortUtil; %\HE1d5;
fZpi+I
/** J:"@S%gy%
* @author treeroot LU;zpXg\
* @since 2006-2-2 @]IRB1X
* @version 1.0 cY5;~lO
*/ OvQzMXU^I
public class HeapSort implements SortUtil.Sort{ xTuJ~$(
m-$}'mEO
/* (non-Javadoc) EpO2%|@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @5wc 3y
*/ "f
89
public void sort(int[] data) { |hj!NhBe
MaxHeap h=new MaxHeap(); (/nnN4\=
h.init(data); DzMg^Kp
for(int i=0;i h.remove(); E9mu:T
System.arraycopy(h.queue,1,data,0,data.length); h2x9LPLBxT
} baD063P;
bK!h{Rr
private static class MaxHeap{ C_>XtcU
oh:9v+
void init(int[] data){ %\,9S`0
this.queue=new int[data.length+1]; _BA; H+M
for(int i=0;i queue[++size]=data; LI@BB:)[
fixUp(size); #8M?y*<I
}
:QP1!
} ~}j+~
)EB+(c~E
private int size=0; vu@.;-2E%
'fl.&"/r
private int[] queue; {H(l"KuL
.xwskzJ3
public int get() { pTi7Xy!Cw
return queue[1]; 9tv,,I;iU
} bwhH2 ^ !
"[P3b"=gW
public void remove() { MG=8`J-`
SortUtil.swap(queue,1,size--); O'IU1sU
fixDown(1); Q<u?BA/
} :8eI_X
file://fixdown ?R)dxuj
private void fixDown(int k) { #S9J9k
int j; {|>Wwa2e
while ((j = k << 1) <= size) { [m{sl(Q
if (j < size %26amp;%26amp; queue[j] j++; N,K/Ya)1
if (queue[k]>queue[j]) file://不用交换 wH!$TAZ:Yw
break; O<Q8%Az
SortUtil.swap(queue,j,k); mrRid}2
k = j; izcaWt3 a
} XX/s@C
} 17?YN<
private void fixUp(int k) { UJh;Hp:
while (k > 1) { 1xEOYM)
int j = k >> 1; =q]!"yU[d
if (queue[j]>queue[k]) I ?Dp*u*
break; ;6``t+]q
SortUtil.swap(queue,j,k); Z6${nUX
k = j; kd !?N
} @kh<b<a4
} 4j=K3m
JqMF9|{H
} 6Jq[]l"v
,k~' S~w.
} 1UJ rPM%
V6P-?Nd
SortUtil: p&RC#wYu
siI%6Gn;
package org.rut.util.algorithm; `WXlq#:K
>nSt<e
import org.rut.util.algorithm.support.BubbleSort; Rs5 lL-I
import org.rut.util.algorithm.support.HeapSort; \X&8EW
import org.rut.util.algorithm.support.ImprovedMergeSort; Z[IM\# "
import org.rut.util.algorithm.support.ImprovedQuickSort; LWJ ?p-X
import org.rut.util.algorithm.support.InsertSort; '42$O
import org.rut.util.algorithm.support.MergeSort; I4jRz*Ufe?
import org.rut.util.algorithm.support.QuickSort; {rR(K"M
import org.rut.util.algorithm.support.SelectionSort; }r@dZBp:
import org.rut.util.algorithm.support.ShellSort; 9}9VZ r?
J6s]vV q"
/** -ymDRoi
* @author treeroot -MS#YcsV
* @since 2006-2-2 ]87BP%G
* @version 1.0 :sg}e
*/ Dj96t5R
public class SortUtil { ) %Fwfb
public final static int INSERT = 1;
lvWwr!w
public final static int BUBBLE = 2; an"~n`g
public final static int SELECTION = 3; NCkI[d]B@
public final static int SHELL = 4; ISNL='%
public final static int QUICK = 5; wxvi)|)
public final static int IMPROVED_QUICK = 6; VSY p
public final static int MERGE = 7; h*l$!nEN
public final static int IMPROVED_MERGE = 8; =XR6rR8
public final static int HEAP = 9; \wA:58 -j
Cty#|6k
public static void sort(int[] data) { ` 'Qb?F6
sort(data, IMPROVED_QUICK); K2M=)B
} =D$ED^W
private static String[] name={ %a~/q0o>
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5_'lu
}; &;-zy%#l
U)bv,{-q
private static Sort[] impl=new Sort[]{ ,J|,wNDU!K
new InsertSort(), =|P
&G~]
new BubbleSort(), [o#% Eg;
new SelectionSort(), i$E [@
new ShellSort(), T3P9
new QuickSort(), KCTX2eNN&h
new ImprovedQuickSort(), V#dga5*]
new MergeSort(), '?9zL*
new ImprovedMergeSort(), h[]9F.[
new HeapSort() 6"Fn$ :l?
}; t>cGfA
;Z{D@g+
public static String toString(int algorithm){ ElQ?|HsQ6p
return name[algorithm-1]; 7v%c.
} \_1a#|97e
WSHPhhM
public static void sort(int[] data, int algorithm) { nf
/*n
impl[algorithm-1].sort(data); p?Azn>qBa
} lNL=Yu2p_
xW`y7Q }p
public static interface Sort { \Vf:/9^
public void sort(int[] data); g&FTX>wX
} g.Xk6"kO
%)r ~GCd
public static void swap(int[] data, int i, int j) { r+FEgSDa]
int temp = data; Gc|)4c
data = data[j]; mtv8Bm=<
data[j] = temp; @[3c1B6K
} S\TXx79PhC
} *vaYI3{qN