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。 #/-_1H
插入排序: Tx>K:`oB
?UZ?NY
package org.rut.util.algorithm.support; 6[ga$nF?
963aW*r
import org.rut.util.algorithm.SortUtil; DVp5hR_$
/** `C72sA{M.
* @author treeroot qRB7Ec_
* @since 2006-2-2 z~oDWANP
* @version 1.0 4gBp8*2
*/ >)nS2bOE
public class InsertSort implements SortUtil.Sort{ 9<1F[SS<s9
TJ_=1Y@z
/* (non-Javadoc) X`r*ob
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vT{ kL
*/ R)8s
public void sort(int[] data) { |(R5e
int temp; c0- ;VZ'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d IB }_L
} x~DLW1I
} MDa7 B +4
} qYB~VE03
Nh!_l
} =t0tK}Y+4
7(k^a)~PL
冒泡排序: sfD5!Z9#1
LDj<?'
package org.rut.util.algorithm.support; oOU1{[
Pcd *">v
import org.rut.util.algorithm.SortUtil; 0~WF{_0|
jA(vTR.`
/** gBw^,)Q{0Y
* @author treeroot D56<fg$
* @since 2006-2-2 LEW hb!U
* @version 1.0 `#s#it'y
*/ ~W#sTrK
public class BubbleSort implements SortUtil.Sort{ ^_5|BT@
n(ir[w#,]"
/* (non-Javadoc) EMvHFu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~Qj}ijWD
*/ HTjkR*E
public void sort(int[] data) { ~f>2U]F>5
int temp; -yH,5vD
for(int i=0;i for(int j=data.length-1;j>i;j--){ UXr5aZ7y
if(data[j] SortUtil.swap(data,j,j-1); 8;gXg
} lx0~>K]
} B{6<;u)[
} qv2!grp]*W
} R[[ ,q:4
m]Y;c_DO:
} K`%tGVY
0HeD{TH\
选择排序: h) (*q+a
IzLF'F
package org.rut.util.algorithm.support; -6~' cm
v1G"3fy9
import org.rut.util.algorithm.SortUtil; :%rS
=f
rfcN/:k
/** }M>rE
* @author treeroot lHfe<j]
* @since 2006-2-2 i\?*=\a
* @version 1.0 f>9s!Hpu_
*/ VDF)zA1V
public class SelectionSort implements SortUtil.Sort { Bik*b)9y2
PH3 >9/H
/* b0<o
* (non-Javadoc)
U^lW@u?:
* @J'YV{]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) + =$
*/ Fzq41jiS
public void sort(int[] data) { A&5:ATQ/|
int temp; 5N7H{vT_
for (int i = 0; i < data.length; i++) { @I3eK^#|P
int lowIndex = i; GRqT-/n"
for (int j = data.length - 1; j > i; j--) { 77 r(*.O|
if (data[j] < data[lowIndex]) { C|-pD
lowIndex = j; (K..k-o`.
} 0$ .m_0H
} T<b+s#n4
SortUtil.swap(data,i,lowIndex); []kN16F
} A#h /B+
} |AhF7Mj*
T)~9Wac
} /*)Tl
%D}H|*IPu
Shell排序: *Ust[u
W
!}{$
package org.rut.util.algorithm.support; B~o-l*
yl&UM
qI(
import org.rut.util.algorithm.SortUtil; s 0u{dqP
F_3:bX
/** l{c]p-
* @author treeroot r{?TaiK
* @since 2006-2-2 LaMLv<)k
* @version 1.0 _~'+Qe_o$5
*/ s,]%dG!
public class ShellSort implements SortUtil.Sort{ v;1F[?@3Y
kJ:F *34e=
/* (non-Javadoc) ;QCrHqRT`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H6TD@kL9Wr
*/ yCz|{=7"j
public void sort(int[] data) { Ucw yxXI
for(int i=data.length/2;i>2;i/=2){ 5sO@OV\
y
for(int j=0;j insertSort(data,j,i); cgu~
} [V8fu
qE>
} M\<w#wZ
insertSort(data,0,1); E ]9\R
} Lv[OUW#S
266oTER]v:
/** 'T=~jA7SkT
* @param data E; $+f
* @param j 0C%W&;r0
* @param i AV8T
*/ 6vKS".4C
private void insertSort(int[] data, int start, int inc) { o]n!(f<(*
int temp; nKr9#JebRC
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Fm_y&7._
} FCj{AD
} WG71k8af
} -Y 9SngxM
'J)2g"T@
} =:,xxqy
-f1k0QwL
快速排序: ![6EUMx
TJ8E"t*)
package org.rut.util.algorithm.support; 1nknSw#
{:nQl}
import org.rut.util.algorithm.SortUtil; HmmS(fU
g9fq5E<G
/** #EGA#SKoq
* @author treeroot ,B}I?vN.
* @since 2006-2-2 MTGiAFE
* @version 1.0 "L&'Fd@ZU
*/ 4674SzL
public class QuickSort implements SortUtil.Sort{ [Qt?W gPj
#L}+H!Myh
/* (non-Javadoc) -5l6&Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |C%Pjl^YkV
*/ Scm36sT{
public void sort(int[] data) { J
T#d(Y
quickSort(data,0,data.length-1); qZEoiNH(Tj
} M6r^L6$N
private void quickSort(int[] data,int i,int j){ LK9g0_
int pivotIndex=(i+j)/2; wd@aw /
file://swap ^rl"rEA
SortUtil.swap(data,pivotIndex,j); s?Uh| BfB
_Us*+
2(4L
int k=partition(data,i-1,j,data[j]); aA`/E
SortUtil.swap(data,k,j); p{)5k
if((k-i)>1) quickSort(data,i,k-1); _96~rel_P
if((j-k)>1) quickSort(data,k+1,j); HS>f1!
,6^znOt
} C`jM0Q
/** d'6|: z9c
* @param data ~rr 4ok
* @param i hG~reVNf
* @param j <AlZ]~Yct
* @return q@5K6yE
*/ :q<Z'EnW
private int partition(int[] data, int l, int r,int pivot) { cV{%^0?D
do{ vP@v.6gS,
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %%ae^*[!n
SortUtil.swap(data,l,r); ^I
mP`*X
} }U w&Ny
while(l SortUtil.swap(data,l,r); wu9=N
^x
return l; 5BkV aF7Th
} U_l'3oPJw
O#EV5FeF.
} ~9\WFF/
}}<Z,/O
改进后的快速排序: BElJB&I
Il@Y|hK
package org.rut.util.algorithm.support; @.$Xv>Jt$
+y2[msBs
import org.rut.util.algorithm.SortUtil; 6C4'BCYW(
L%}zVCg
/** ; |/leu8
* @author treeroot e}VBRvr
* @since 2006-2-2 39F
Of
* @version 1.0 ^taBG3P
*/ |IoB?^_h
public class ImprovedQuickSort implements SortUtil.Sort { IL/Yc1
-F"QEL#
private static int MAX_STACK_SIZE=4096; Rv,JU6>i
private static int THRESHOLD=10; t&Os;x?To?
/* (non-Javadoc) /y7M lU9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E@05e
*/ W>(/ bX
public void sort(int[] data) { 3cS2gxF
int[] stack=new int[MAX_STACK_SIZE]; {j {+0V
Rd7_~.Bo
int top=-1; |sZ!
int pivot; qjAWeS/
int pivotIndex,l,r; /N>e&e[35\
1T_QX9
stack[++top]=0; h0oMTiA
stack[++top]=data.length-1; ]9=h%5Ji>
AB Xl
while(top>0){ x6afI<dm
int j=stack[top--]; UX<Qcjm$e
int i=stack[top--]; F["wDO
SjjIr ^
pivotIndex=(i+j)/2; *{undZ?(>
pivot=data[pivotIndex]; v1k)hFjPK
5m=I*.qE
SortUtil.swap(data,pivotIndex,j); {*ZY(6^
`I$<S(h7
file://partition _ ~RpGX
l=i-1; Ko&hj XHx
r=j; V]c;^
do{ KD1=Y80P
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^[Ua46/" m
SortUtil.swap(data,l,r); )yY6rI;:
} }),w1/#5u8
while(l SortUtil.swap(data,l,r); t&5%?QyM
SortUtil.swap(data,l,j); be5,U\&z
VN0mDh?E
if((l-i)>THRESHOLD){ +(O~]Q-Ez
stack[++top]=i; SYeadsvF
stack[++top]=l-1; TvNY:m6.%
} FG3UZVUg9
if((j-l)>THRESHOLD){ dw~p?[
stack[++top]=l+1; f"7M^1)h2%
stack[++top]=j; p_ Fy>j
} ]Q
"p\@\!
wi8Yl1p]!z
} /:<IIqO.
file://new InsertSort().sort(data); _UE)*l m+
insertSort(data); Uw-p758dD
} hqk}akXt
/** LAx4Xp/
* @param data @`-[;?>
*/ 6OiSK@<Hk
private void insertSort(int[] data) { ]J9cVp
int temp; 133I.XBU
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V Km!Ri$
} `G1&Z]z
} !|2VWI}
} kVI#(uO
OI}
&m^IOo
} r[.>P$U
obK*rdg,
归并排序: ~Au,#7X)
]fnnZ
package org.rut.util.algorithm.support; d_S*#/k
bW#@OrsS
import org.rut.util.algorithm.SortUtil; s{ V*1$e~
]maYUKqv}'
/** UgB'[@McS
* @author treeroot 2>}xhQJ
* @since 2006-2-2 C^t(^9
* @version 1.0 krq/7|
*/ Z'^U ad6
public class MergeSort implements SortUtil.Sort{ 7z\m;
1
PCd0 ?c
/* (non-Javadoc) KucV3-I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VHOfaCE
*/ c[}(OH
public void sort(int[] data) { C
]Si|D
int[] temp=new int[data.length]; .%'(9E
mergeSort(data,temp,0,data.length-1); ES <1tG
} GN#<yv$av
in<Rq"L
private void mergeSort(int[] data,int[] temp,int l,int r){ "+KJop
int mid=(l+r)/2; 9/ SXs0
if(l==r) return ; gu)=wu0
mergeSort(data,temp,l,mid); }],Z;:
mergeSort(data,temp,mid+1,r); WqxUX H
for(int i=l;i<=r;i++){ O 2{)WWOT
temp=data; lcON+j
} h@7FY
int i1=l; ?^'
7+8C*J
int i2=mid+1; I O%6 O
for(int cur=l;cur<=r;cur++){ dAP|:&y@
if(i1==mid+1) 2LCB])X
data[cur]=temp[i2++]; !>x|7
else if(i2>r) lX:|iB
data[cur]=temp[i1++]; OE)~yKy
else if(temp[i1] data[cur]=temp[i1++]; ?EMK8;
else X.ONa_
data[cur]=temp[i2++]; 2c<&eX8"
} $=sXAK9
} IUGz =%[
z
sQo$p
} i$^)UZJ&0
[=uo1%
改进后的归并排序: eZ a:o1y
qLncn}oNM
package org.rut.util.algorithm.support; %zC[KE*~
v]2S`ffP
import org.rut.util.algorithm.SortUtil; q,<[hBri-
F Kc;W
/** E}CiQUx
* @author treeroot R cY>k
* @since 2006-2-2 *IlaM'[*
* @version 1.0 8T;IZ(s
*/ QYXx:nIrg
public class ImprovedMergeSort implements SortUtil.Sort { I~PDaZP
B}OY/J/*8
private static final int THRESHOLD = 10; Gx?+9CV
p6EDQwlf
/* +c:3o*
* (non-Javadoc) 4A{|[}!
* d
{lP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?:^mBb)T
*/ n?#!VN3
public void sort(int[] data) { Z>F^C}8f
int[] temp=new int[data.length]; Nd:R"
p*8
mergeSort(data,temp,0,data.length-1); \u`)kJ5o1
} |1Dc!V'?"
M|T4~Q U&
private void mergeSort(int[] data, int[] temp, int l, int r) { "_L?2ta
int i, j, k; ci,+Bjc
int mid = (l + r) / 2; DG(7|`(aY
if (l == r) +y[@T6_
return; q<e&0u4
if ((mid - l) >= THRESHOLD) nGZX7Fx5
mergeSort(data, temp, l, mid); J2GcBzRH
else )g|
BMmB
insertSort(data, l, mid - l + 1); 8B!aO/Km
if ((r - mid) > THRESHOLD) :/YO ni1h
mergeSort(data, temp, mid + 1, r); JnD{J`:
else &a> lWE
insertSort(data, mid + 1, r - mid); Y izE5[*
>Sk[vI0Y
for (i = l; i <= mid; i++) { PZ:u_*Vu`
temp = data; I^*'.z!4Q
} 1`f_P$&Z_J
for (j = 1; j <= r - mid; j++) { @
\.;b9
temp[r - j + 1] = data[j + mid]; "SWMk!
} -9P2`XQ^
int a = temp[l]; |ifHSc.j<
int b = temp[r]; C>^D*C(
for (i = l, j = r, k = l; k <= r; k++) { 9z
m|Lbj
if (a < b) { m(D]qYwh
data[k] = temp[i++]; X{Yw+F,j
a = temp; >QQ(m\a$
} else { KYJ1}5n
data[k] = temp[j--]; (lA.3 4.p
b = temp[j]; VCNT4m
} Mro4`GL
} gLD`wfZR
} {!ZyCi19
^jdL@#k00
/** |wxGpBau
* @param data ~KjJ\b)R
* @param l ;:&?=d
* @param i VBoMT:#
*/ HCA{pR`
private void insertSort(int[] data, int start, int len) { -ML6d&cm
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); B,$l4m4
} &znH!AQ0
} <>SdVif]
} wyc D>hc
} )\/
=M*
yT OyDm-
堆排序: XR# ;{p+b
6@;ha=[+
package org.rut.util.algorithm.support; TDK@)mP
wWW~_zP0
import org.rut.util.algorithm.SortUtil; ]rd/;kg.S
4C_c\;d
/** huFz97?y(
* @author treeroot H{ M)-
* @since 2006-2-2 `%K`gYhG1
* @version 1.0 iMP
*/ Zp`T
public class HeapSort implements SortUtil.Sort{ dLh6:Gh8_I
|fsm8t<~8
/* (non-Javadoc) -*VKlZ8-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -H(vL=
*/ H(u+#PIIw
public void sort(int[] data) { d<p 2/aA
MaxHeap h=new MaxHeap(); @B1{r|-<^
h.init(data); SDJH;c0
for(int i=0;i h.remove(); Pd=,$UQp
System.arraycopy(h.queue,1,data,0,data.length); aA*9,
} l4'~}nn(Y
>}+Q:iNQ)2
private static class MaxHeap{ a^nAZ
uq7T{7~<
void init(int[] data){ Os),;W0w4
this.queue=new int[data.length+1]; V}8$p8#<@
for(int i=0;i queue[++size]=data; #m. AN
fixUp(size); >O{7/)gS^
} %n$^-Vc&
} 'E]A.3-Mt
y%B X]~
private int size=0; 9G+f/k,P
S0w> hr
private int[] queue; 7Ur?ep
,\ldz(D?+
public int get() { ,TC~~EWq
return queue[1]; t\y-T$\\
} ``4wX-y
_g|acBF
public void remove() { h* .w"JO
SortUtil.swap(queue,1,size--); Ueyw;Y
fixDown(1); D5]{2z}k
} $3
8gs{+
file://fixdown 9BON.` |_
private void fixDown(int k) { 0Oxz3r%}r
int j; _vYzF+
while ((j = k << 1) <= size) { hY;_/!_
if (j < size %26amp;%26amp; queue[j] j++; Df=q-iq<{/
if (queue[k]>queue[j]) file://不用交换 ?C;JJ#Ho
break;
,+L
KJl
SortUtil.swap(queue,j,k); SE `l(-tL
k = j; 8OAg~mQ15(
} \KM|f9-b
} }=GM?,7b
private void fixUp(int k) { F>Jg~ FD*
while (k > 1) { T0|H9>M
int j = k >> 1; g()m/KS<
if (queue[j]>queue[k]) I-:`cON=G
break; 1bRL"{m^)-
SortUtil.swap(queue,j,k); m6n hC
k = j; 7kz-V.
} (([I]q
} 'DAltr<
EF;,Gjh5p
} tV`&-H
@-6?i)
} 7:o+iP4 6
c^S&F9/U*
SortUtil: :C%47qv
,P@QxnQ
package org.rut.util.algorithm; a$+#V=bA
|=3 *;}
import org.rut.util.algorithm.support.BubbleSort; L>nO:`>h
import org.rut.util.algorithm.support.HeapSort; 60PYCqWc
import org.rut.util.algorithm.support.ImprovedMergeSort; `pYE[y+
import org.rut.util.algorithm.support.ImprovedQuickSort; 1g i}H)
import org.rut.util.algorithm.support.InsertSort; $FCw$ +w
import org.rut.util.algorithm.support.MergeSort; v*DFiCQD
import org.rut.util.algorithm.support.QuickSort; 1URsHV!xcM
import org.rut.util.algorithm.support.SelectionSort; qJMp1DC
import org.rut.util.algorithm.support.ShellSort; hEcYpng~
E& ]_U$
/** n4*'B*
* @author treeroot 8|<f8Z65!
* @since 2006-2-2 Wf1-"Q
* @version 1.0 ;U7t
*/ b-b;7a\N
public class SortUtil { g
=\13#F
public final static int INSERT = 1; EG1x
public final static int BUBBLE = 2; `q1}6U/k
public final static int SELECTION = 3; *]9XDc]{j1
public final static int SHELL = 4; v<fWc971
public final static int QUICK = 5; Kz^ hQd
public final static int IMPROVED_QUICK = 6; Vx(;|/:
public final static int MERGE = 7; UJs?9]x>
public final static int IMPROVED_MERGE = 8; dh,7iQ
s
public final static int HEAP = 9; +}]wLM}\UF
"b;k.Fx
public static void sort(int[] data) { B#4S/d{/
sort(data, IMPROVED_QUICK); Px#4pmz
} 73#9NZR
private static String[] name={ )XZ,bz*jn
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :\T_'Shq
}; Nuo<` 6mV@
lc-*8eS
private static Sort[] impl=new Sort[]{ D2-O7e
new InsertSort(), dK7 ^
new BubbleSort(), 6!o/~I#
new SelectionSort(), {&b-}f"m
new ShellSort(), KKMWD\
new QuickSort(), ],#ZPUn
new ImprovedQuickSort(), C890+(D~
new MergeSort(), Ut=0~x.=<
new ImprovedMergeSort(), F6h/0i
new HeapSort() B)(w%\M4^
}; c{ZqQtfM
n/:Z{
public static String toString(int algorithm){ wf^cyCR0
return name[algorithm-1]; {S# 5g2
} _2x uzmz0
nFSG<#x\
public static void sort(int[] data, int algorithm) { m./*LXU
impl[algorithm-1].sort(data); <`b|L9
} U@MOvW)
E ,Dlaq
public static interface Sort { <kk'v'GW@
public void sort(int[] data); `_6@3-%
} W>UjUq);
+# A|Zp<
public static void swap(int[] data, int i, int j) { J78Qj[v
int temp = data; SlM>";C\
data = data[j]; O{O9}]6
data[j] = temp; agGgJ@
} ~6=Wq64
} VN1#8{