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。 cD%_+@GaU
插入排序: ]\JLlQ}#H
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package org.rut.util.algorithm.support; H1t`fyri2
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import org.rut.util.algorithm.SortUtil; h&|S*
/** ShIJ6LZ
* @author treeroot `MLOf
* @since 2006-2-2 ]Pp}=hcD
* @version 1.0 f,} (=
u
*/ /!i`K{
public class InsertSort implements SortUtil.Sort{ w=QlQ\
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/* (non-Javadoc) Vr^UEu.w?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vsj1!}X:
*/ W?:e4:Q
public void sort(int[] data) { /&i6vWMhP
int temp; =#Z+WD-E
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Bs3M7zRG
} j&N {j_M
} im&Nkk4n@
} : MEB] }
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} #FhgKwx
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冒泡排序: 8}?wi[T
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package org.rut.util.algorithm.support; /prR;'ks
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import org.rut.util.algorithm.SortUtil; <-h[I&."
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/** '>^!a!<G
* @author treeroot J*Q+$Ai~
* @since 2006-2-2 %Q080Ltet
* @version 1.0 ?8/T#ox
*/ *UZd!a)
public class BubbleSort implements SortUtil.Sort{ !{+a2wi
5-RA<d#
/* (non-Javadoc) %HD0N&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <~Oy3#{
*/ AX] cM)w
public void sort(int[] data) { OQJ#>*?
int temp; @$|8zPs
for(int i=0;i for(int j=data.length-1;j>i;j--){ "(YfvO+
if(data[j] SortUtil.swap(data,j,j-1); #z5$_z?_
} 4M)oA|1w
} $vLGX>H
} 98rO]rg
} .Cu0G1
u*m|o8
} @s|G18@
Y '+mC
选择排序: ;U&~tpd
B;^1W{%J
package org.rut.util.algorithm.support; vNQ|tmn
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import org.rut.util.algorithm.SortUtil; mo D)^':.
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/** >H,5MM!
* @author treeroot HoO1_{q"
* @since 2006-2-2 6ltV}Wt-
* @version 1.0 _oE 7<
*/ =X;h _GQ
public class SelectionSort implements SortUtil.Sort { )agrx76]3w
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/* (XNd]G
* (non-Javadoc) +[`
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* m^o?{
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "
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*/ N5b^
public void sort(int[] data) { pHzl/b8
int temp; v[\GhVb
for (int i = 0; i < data.length; i++) { {yFMY?6rf
int lowIndex = i; +,zV
[\
for (int j = data.length - 1; j > i; j--) {
tRbZX{
if (data[j] < data[lowIndex]) { i3vg7V.
lowIndex = j; qV)hCc/ ~
} i.0d>G><@
} @ek8t2??x
SortUtil.swap(data,i,lowIndex);
+O4//FC-"
} wWVB'MRXB,
} tkP& =$
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} )S9}uOG#
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Shell排序: mYFc53B
$wcTUl
package org.rut.util.algorithm.support; G6bvV*TRi
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import org.rut.util.algorithm.SortUtil; p{x6BVw?>
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/** `0`#Uf_/$
* @author treeroot rrSFmhQUk
* @since 2006-2-2 ^[VEr"X
* @version 1.0 @o6!
*/ i(YR-vYK
public class ShellSort implements SortUtil.Sort{ : cPV08i
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R[!
/* (non-Javadoc) I2gSgv%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ma6Wr !J
*/ ]l}bk]
public void sort(int[] data) { EX@Cf!GjN
for(int i=data.length/2;i>2;i/=2){ qOAhBZ~
for(int j=0;j insertSort(data,j,i); #V.u[:mO
} ,U~in)\
U
} %edTW[C`
insertSort(data,0,1); P! P` MX
} *G[` T%g
Mehp]5*
/** mr,GHx
* @param data +hcJ!$J7
* @param j X([@}ren
* @param i lNMJcl3
*/ 2RdpVNx\y
private void insertSort(int[] data, int start, int inc) { `)NTJc$):
int temp; 65GC7 >[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); G+tzp&G@
} (!a\23
} _ucixM#
} ZU`HaL$
I7C+XUQkQ
} 9hgIQl
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快速排序: ]dT]25V
(`<B#D;
package org.rut.util.algorithm.support; orFB*{/Z
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import org.rut.util.algorithm.SortUtil; !iAZEOkRR
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/** ceLr;}?Ws
* @author treeroot GuF-HP}xM
* @since 2006-2-2 (L!u[e0[#
* @version 1.0 u4xJ-Vu
*/ lUiO |
public class QuickSort implements SortUtil.Sort{ nyZ?m
uN0'n}c;1.
/* (non-Javadoc) ~Fo`Pr_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?sxf_0*
*/ w$`u_P|@E:
public void sort(int[] data) { }mS
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quickSort(data,0,data.length-1); ltHuN;C\
} 0Qg%48u
private void quickSort(int[] data,int i,int j){ {"0n^!
int pivotIndex=(i+j)/2; !v*#E{r"g=
file://swap Is97>aid
SortUtil.swap(data,pivotIndex,j); bBQHxH}vi
9lX[rBZ
int k=partition(data,i-1,j,data[j]); 9Dyw4'W.N
SortUtil.swap(data,k,j);
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if((k-i)>1) quickSort(data,i,k-1); R(2MI}T
if((j-k)>1) quickSort(data,k+1,j); V3_qqz}`r
5;[0Q
} Xm6M s<z6
/** R=W$3Ue~,
* @param data 7N0m7SC
* @param i #Z]<E6<=9
* @param j `KE(R8y
* @return (JiEV3GH
*/ Si|8xq$E;
private int partition(int[] data, int l, int r,int pivot) { t5QGXj
do{ FYK}AR<=
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .>'J ^^
SortUtil.swap(data,l,r); %Ip=3($Ku[
} z=LO$,JW`
while(l SortUtil.swap(data,l,r); '=IuwCB|;
return l; G+iJS!=
} Kt_HJ!
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} "H{#ib_c_
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改进后的快速排序: ~5Rh7
7RgnL<t~:8
package org.rut.util.algorithm.support; ;e~K<vMm;y
5a* Awv}
import org.rut.util.algorithm.SortUtil; .\)p3pC)
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/** Fh)YNW@
* @author treeroot =IIE]<z
* @since 2006-2-2 ,=P0rbtK
* @version 1.0 t;[Q&Jl
*/ +>v{#A_u
public class ImprovedQuickSort implements SortUtil.Sort { uMBb=
U4Pk^[,p1G
private static int MAX_STACK_SIZE=4096; $P&27
private static int THRESHOLD=10; U9AtC.IG!
/* (non-Javadoc) [92bGR{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <zu)=W'R]
*/ U3w*z6OG
public void sort(int[] data) { ,]?l(H $x'
int[] stack=new int[MAX_STACK_SIZE]; Iq47^
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int top=-1; Sq2yQSd
int pivot; iainl@3Qj
int pivotIndex,l,r; (yz8}L3
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stack[++top]=0; ,@2d4eg4
stack[++top]=data.length-1; Vs[!WJ
7
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while(top>0){ JDC,]
int j=stack[top--]; 5TdI
int i=stack[top--]; W&^2Fb
M~!LjJg;
pivotIndex=(i+j)/2; B?_ujH80m
pivot=data[pivotIndex]; m<22E0=g
Q&9& )8-
SortUtil.swap(data,pivotIndex,j); @aGS~^Uh
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file://partition vGPaW YV
l=i-1; )5bdWJ>l
r=j; ,#-^
do{ 9a_(_g>S
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /t?(IcP5
SortUtil.swap(data,l,r); @i:_JOl
} VAR/"
while(l SortUtil.swap(data,l,r); on1mu't_;
SortUtil.swap(data,l,j); K#p&XIY,
"i*Gi
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if((l-i)>THRESHOLD){ 8|,-P=%t
stack[++top]=i; cl-i6[F
stack[++top]=l-1; h-h}NCP
} FJ&zU<E
if((j-l)>THRESHOLD){
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stack[++top]=l+1; WJL,L[XC
stack[++top]=j; Wkv**X}
} [G|2m_
X]*W +
} B[MZPv)
file://new InsertSort().sort(data); Bj7\{x,?
insertSort(data); >heih%Ar0J
} z*>CP
/** cWM|COXL+
* @param data !ZV#~t:)
*/ O"9f^y*
private void insertSort(int[] data) { Z_Ma|V?6
int temp; }Mo9r4}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %jM|*^\%
} c#;LH5KI
} "Hjw
} Vt4}!b(O
3B"rI
} Q<``}:y|>
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归并排序: "WYcw\@U
+CNRSq"
package org.rut.util.algorithm.support; I.e'
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import org.rut.util.algorithm.SortUtil; c\4n 7m,y
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/** |/lIasI
* @author treeroot 90aPIs-
* @since 2006-2-2 1,`x1dcO!A
* @version 1.0 cCV"(Oo[H|
*/ {Q(6
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public class MergeSort implements SortUtil.Sort{ "x$S%:p
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/* (non-Javadoc) NV-9C$<n2!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W{m0z+N[B
*/ N<> dg
public void sort(int[] data) { O x$|ZEh
int[] temp=new int[data.length]; =3SL&
:8
mergeSort(data,temp,0,data.length-1); 83l)o$S
} =\%>O7c,8Y
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private void mergeSort(int[] data,int[] temp,int l,int r){ 3Ob"r`
int mid=(l+r)/2; -;`W"&`ss
if(l==r) return ; ^Q :K$!
mergeSort(data,temp,l,mid); '7*=m^pc
mergeSort(data,temp,mid+1,r); UXk8nH
for(int i=l;i<=r;i++){ RLHe;-*b]I
temp=data; IfXLnD^||
} fp![Pbms.
int i1=l; dju&Ku
int i2=mid+1; >;3c;nf
for(int cur=l;cur<=r;cur++){ 4QZy-a*tA
if(i1==mid+1) ycAQPz}=I
data[cur]=temp[i2++]; VDmd+bvJV
else if(i2>r) \!V6` @0KC
data[cur]=temp[i1++]; xBG1up<z
else if(temp[i1] data[cur]=temp[i1++]; "\=_- `
else >aWJ+
data[cur]=temp[i2++]; uATBt
} *-Yw0Y[E
} +%Gm2e;_u
gwYd4
} e #OU {2X
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改进后的归并排序: 6kuSkd$.
x+TNF>%'D
package org.rut.util.algorithm.support; !aEp88u
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import org.rut.util.algorithm.SortUtil; zn~m;0Xi
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/** uU\iji\
* @author treeroot &^7)yS+C
* @since 2006-2-2 q%vUEQLBp
* @version 1.0 N+V-V-PVk
*/ H5I#/j
public class ImprovedMergeSort implements SortUtil.Sort { t3XMQ']
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private static final int THRESHOLD = 10; |5/[0V-vy
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/* mHMej@
* (non-Javadoc) vPsX!m[#
* KE3v3g<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U+i[r&{gb
*/ rh
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public void sort(int[] data) { %%>?<4t
int[] temp=new int[data.length]; Mvh_>-i
mergeSort(data,temp,0,data.length-1); #"M Pe4
} *j*
WE\
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private void mergeSort(int[] data, int[] temp, int l, int r) { ,'673PR
int i, j, k; FS}z_G|4]
int mid = (l + r) / 2; )-{Qa\6(%
if (l == r) %dU}GYL_
return; /YbL{G
)j}
if ((mid - l) >= THRESHOLD) eBV{B70k
mergeSort(data, temp, l, mid); 7| T:TbY>
else ^Bb_NcU
insertSort(data, l, mid - l + 1); @6!JW(,]\
if ((r - mid) > THRESHOLD) =KZ4:d5
mergeSort(data, temp, mid + 1, r); Vel;t<1
else /fq6-;co+
insertSort(data, mid + 1, r - mid); PS22$_}
("oA{:@d
for (i = l; i <= mid; i++) { 0R]CI
temp = data; bsry([N>w
} kt#W~n
for (j = 1; j <= r - mid; j++) { h,+=h;!
temp[r - j + 1] = data[j + mid]; z>:7}=H0
} <X |h*
int a = temp[l]; t_rDXhM
int b = temp[r]; c" 7pf
T
for (i = l, j = r, k = l; k <= r; k++) { gsp7N
if (a < b) { gNd
J=r4
data[k] = temp[i++]; M::iU_
a = temp; "/fs%F
} else { bZXNo
data[k] = temp[j--]; Mg$9'a"[\
b = temp[j]; d/>,U7eS[+
} RX1{?*r]Z
} H=#Jg;_w
} g8"7wf`0k
MGzF+ln^U
/** F/SsiUBS
* @param data RKkI/ Z0
* @param l o
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* @param i He!!oKK>
*/ lKUm_; m
private void insertSort(int[] data, int start, int len) { )^Pvm
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /AW>5r]
} -<!17jy
} dt+
4$
} A'1AU:d
} %i>e
tC:,!4 P$
堆排序: [?@wCY4=
Q'%o;z*
package org.rut.util.algorithm.support; 5Y=\~,%\oH
t=rAcyNM
import org.rut.util.algorithm.SortUtil; U/!&KsnT
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ci
/** !muYn-4M
* @author treeroot >Ryss@o
* @since 2006-2-2 v-fi9$#^
* @version 1.0 o`mIi
*/ hO.G'q$V
public class HeapSort implements SortUtil.Sort{ qd~98FS
8]":[s6x
/* (non-Javadoc) <>i+R#u{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n qLAby_
*/ -5v.1y=!L
public void sort(int[] data) { gQ=POJ=G
MaxHeap h=new MaxHeap(); S<!_
u q
h.init(data); Au} ;z6k
for(int i=0;i h.remove(); ^;$a_$|
System.arraycopy(h.queue,1,data,0,data.length); ]Y&)98
} |;9 A{#zM
_G[I2]
private static class MaxHeap{ *;e@t4
;c-
]bhBB
void init(int[] data){ 2{B(j&{
this.queue=new int[data.length+1]; ]p&< nK,
for(int i=0;i queue[++size]=data; Jrd4a~XP
fixUp(size); Vt=(2d5:p
} (F[/~~
} V9j1j}
r
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private int size=0; 3E}NiD\V}
j8Q5d`
private int[] queue; E<CxKY9
9jR[:[
public int get() { 8$v zpu
return queue[1]; /;NE]{K
} Bd9hf`%2
%7>AcTN~
public void remove() { 3V
Mh)
SortUtil.swap(queue,1,size--); CQjZAv
fixDown(1); r7"A u"
} dH2]ZE0V
file://fixdown gO:Z6}3vM
private void fixDown(int k) { 'uf2
nUo
int j; [j}7 @Mr`\
while ((j = k << 1) <= size) { *rn]/w8ZW
if (j < size %26amp;%26amp; queue[j] j++;
}d~wDg<#
if (queue[k]>queue[j]) file://不用交换 '"w}gx
break; c@9Z&2)
SortUtil.swap(queue,j,k); x , Vh
k = j; 4Wla&yy
} 1Y"35)CR)
} =Esbeb7P
private void fixUp(int k) { nl'J.dJe
while (k > 1) { yMbcFDlBr
int j = k >> 1; <Hh5u~
if (queue[j]>queue[k]) ;4kx >x*H
break; 2rO)qjiH
SortUtil.swap(queue,j,k); M*O(+EM
k = j; IQw
%|^
} 974eY
} PPCTc|G
Q&upxE4-~
} <DXmZ1
D#d8 ^U
} tCbr<Ug
VPM|Rj:d
SortUtil: +#*&XX5A#?
kQwm"Z
package org.rut.util.algorithm; +2EHmuJ;
~TG39*m
import org.rut.util.algorithm.support.BubbleSort; r}R^<y@I
import org.rut.util.algorithm.support.HeapSort; E#<7\p>
import org.rut.util.algorithm.support.ImprovedMergeSort; EvqUNnjR
import org.rut.util.algorithm.support.ImprovedQuickSort; 18.Y/nZAgQ
import org.rut.util.algorithm.support.InsertSort; f^!11/Wv
import org.rut.util.algorithm.support.MergeSort; Yz2{LW[K
import org.rut.util.algorithm.support.QuickSort; BZJKiiD
import org.rut.util.algorithm.support.SelectionSort; C!7U<rI
import org.rut.util.algorithm.support.ShellSort; @1<omsl
#.)xm(Ys
/** T/wM(pr'
* @author treeroot Mu'^OX82
* @since 2006-2-2 +MNSZLP]
* @version 1.0 tg7C;rJ
*/ {5QosC+o6Q
public class SortUtil { H}h~~7E
public final static int INSERT = 1; 0
OAqA?Z
public final static int BUBBLE = 2; M)"]$TM
public final static int SELECTION = 3; !K3i-zY
public final static int SHELL = 4; DYo<5^0
public final static int QUICK = 5; wi\z>'R
public final static int IMPROVED_QUICK = 6; Y_[g_
public final static int MERGE = 7; 068WlF cWV
public final static int IMPROVED_MERGE = 8; y _'e yR@)
public final static int HEAP = 9; C~ZE95g
3VcT7y*{P
public static void sort(int[] data) { $R%+*
sort(data, IMPROVED_QUICK); U_x0KIm
} "JzfL(yt
private static String[] name={ /&D'V_Q`*
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" v#<\:|XAg
}; 2q"_^deI5*
=MTj4VXh"
private static Sort[] impl=new Sort[]{ <#xrrRhm}
new InsertSort(), R=\v3m
new BubbleSort(), ]`zjRRd
new SelectionSort(), b
A)b`1lI
new ShellSort(), >.J'L5
x$
new QuickSort(), W[R]^2QAG
new ImprovedQuickSort(), $zC6(C(l
new MergeSort(), cs K>iN
new ImprovedMergeSort(), UvPp~N7,
new HeapSort() gf0PMc3l
}; /:#j?c
PM~bM3Ei
public static String toString(int algorithm){ W
*YW6
return name[algorithm-1]; j6n2dMRvSE
} #"Fg%36Zd
99F>n[5
public static void sort(int[] data, int algorithm) { 4@DVc7\x$
impl[algorithm-1].sort(data); D^,\cZbY
} M'\pkzx
CxJfrI_W
public static interface Sort { pNp^q/-yB
public void sort(int[] data); T?H\&2CLT
} ZJ^s}
0SJ{@*
public static void swap(int[] data, int i, int j) { 7'_nc!ME
int temp = data; Sdgb#?MR|
data = data[j]; %S{o5txo
data[j] = temp; :~t<L%tYF
} qPsyqn?Y|
} d4d\0[