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。 @R Jr
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插入排序: r&+w)U~
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package org.rut.util.algorithm.support; #||D,[ _=+
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import org.rut.util.algorithm.SortUtil; `nRF"T_
/** 8O_yZ
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* @author treeroot Us.k,
* @since 2006-2-2 Ae%AG@L
* @version 1.0 _\gCdNrD
*/ @*E=O |
public class InsertSort implements SortUtil.Sort{ Sf*gAwnW
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/* (non-Javadoc) <.2jQ#So
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lPD&Doa
*/ y'!"GrbZ
public void sort(int[] data) { !X9^ L^v}
int temp; ^zW=s$\Fo
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =Qf{
} \EXa 9X2
} ~)VI`36X
} V%B~ q`4
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} y\})C-&
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冒泡排序: -Jf}3$Ra
iuA_Jr
package org.rut.util.algorithm.support; <I#M^}`
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import org.rut.util.algorithm.SortUtil; +4Fw13ADE
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/** B}"V.Msv/
* @author treeroot <'QI_mP*
* @since 2006-2-2 )}P/xY0
* @version 1.0 l&*=
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*/ ^]D+H9Tl
public class BubbleSort implements SortUtil.Sort{ JLt%G^W>
^X?uAX-RP|
/* (non-Javadoc) :5F(,Z_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l"7#(a
*/ ;XQ27,K&
public void sort(int[] data) { !zsrORF{
int temp; kZ PL$\/A
for(int i=0;i for(int j=data.length-1;j>i;j--){
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if(data[j] SortUtil.swap(data,j,j-1); %@:6&
} |+KwyHE`9
} %E"v@
} ddN G:
} t 4VeXp6
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} `H 'wz7
#G_'5{V
选择排序: nW}
s
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package org.rut.util.algorithm.support; )\j
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import org.rut.util.algorithm.SortUtil; 0OQ*V~>f
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1{
/** m;A[2 6X
* @author treeroot yn"4qC#Z
* @since 2006-2-2 }dHdy{$
* @version 1.0 -SfU.XlZl
*/ Yg,;l-1
public class SelectionSort implements SortUtil.Sort { ^}{x).
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/* U82mO+}
* (non-Javadoc) fUGappb
* |2%|=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s2GF*{
*/ r/HCWs|
public void sort(int[] data) { e(xuy'4r
int temp; FUlhEH
for (int i = 0; i < data.length; i++) { N>,`TsUwW
int lowIndex = i; l GBg8/[
for (int j = data.length - 1; j > i; j--) { p:K%-^
if (data[j] < data[lowIndex]) { ,lStT+A
lowIndex = j; #r]Z2Y]
} .c~z^6x
} z#ki# o
SortUtil.swap(data,i,lowIndex); AS@(]T#R
} K5|~iW'
} P"l'? `
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} l_yF;5|?z
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Shell排序: pjX= :K|
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package org.rut.util.algorithm.support; ux)*B}/xh
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import org.rut.util.algorithm.SortUtil; z<mN-1PM7&
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/** N0-J=2
* @author treeroot N0Y4m_dm*
* @since 2006-2-2 y.J>}[\&x
* @version 1.0 }8#Ed;%K
*/ bT&{8a
public class ShellSort implements SortUtil.Sort{ ` =P_ed%&'
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/* (non-Javadoc) H$C*&p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lFnYQab
*/ lTP#6zqfv
public void sort(int[] data) { ~F@n `!c
for(int i=data.length/2;i>2;i/=2){ .pQ5lK(R
for(int j=0;j insertSort(data,j,i); cS7\,/4S
} kj[boxN
} WV.hQX9P
insertSort(data,0,1); DAP/
} .ex;4( -!
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/** L;u 5
* @param data Wp8>Gfb2
* @param j Ycspdl+(S$
* @param i vN\[2r%S
*/ V%PQlc.X
private void insertSort(int[] data, int start, int inc) { ?o?$HK
int temp; $zp|()_
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }Le]qoW['
} ;Vat\,45pg
} JJ
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} e4SS'0|
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} 4S~kNp$
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快速排序: \
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T@U,<[,
package org.rut.util.algorithm.support; BJWlx*U]
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import org.rut.util.algorithm.SortUtil; (k #xF"yI
t^"8M6BqC;
/** v$Fz^<Na
* @author treeroot
T`fT[BaY
* @since 2006-2-2 #jg-q|nd
* @version 1.0 ,^8':X"A{!
*/ `1(ED= |
public class QuickSort implements SortUtil.Sort{ IRx%L?
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/* (non-Javadoc) ]zaTX?F:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IiqqdU]
*/ ,o%by5j"^N
public void sort(int[] data) { V~j^
quickSort(data,0,data.length-1); OxGfLeP.R!
} >fI\f <ez
private void quickSort(int[] data,int i,int j){ 2SC-c `9)
int pivotIndex=(i+j)/2; M.t,o\xl
file://swap h`\$8oV
SortUtil.swap(data,pivotIndex,j); UHvA43
lWj*tnnn[
int k=partition(data,i-1,j,data[j]); 7)jN:+4N
SortUtil.swap(data,k,j); 6[k<&;
if((k-i)>1) quickSort(data,i,k-1); M' z.d
if((j-k)>1) quickSort(data,k+1,j); LxhS
9
@ewaj!
} 'hU5]}=
/** ^rO"U[To
* @param data vRC >=y*=
* @param i Vf pT5W<
* @param j *{#C;"
* @return {:!>Y1w>
*/ XH~(=^/_
private int partition(int[] data, int l, int r,int pivot) { rIcgf1v70
do{ ~9FL]qo
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Gm:s;w-;v
SortUtil.swap(data,l,r); b`D]L/}pr
} "[?DS
while(l SortUtil.swap(data,l,r); s2SV
return l; d=^QK{8
} 0}NDi|o
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} U MRFTwY
B;(U?gC
改进后的快速排序: bpZA%{GS
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package org.rut.util.algorithm.support; \f^xlX3&`
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import org.rut.util.algorithm.SortUtil; N
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/** rHw#<oV
* @author treeroot k*N!U[]
* @since 2006-2-2 Cwls e-
* @version 1.0 <L4$f(2
*/ tcXXo&ZS
public class ImprovedQuickSort implements SortUtil.Sort { v2rO>NY4
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private static int MAX_STACK_SIZE=4096; @z ",1^I
private static int THRESHOLD=10; 6ScB:8M
/* (non-Javadoc) vx($o9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &^#iS<s1
*/ $L0sBW&
public void sort(int[] data) { N gF7$@S
int[] stack=new int[MAX_STACK_SIZE]; H5Eso*v@
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int top=-1; Jg=!GU/::
int pivot; Z
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int pivotIndex,l,r; ;@qS#7SRB
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stack[++top]=0; .kU^)H"l
stack[++top]=data.length-1; g=nb-A{#
uc+{<E3,%
while(top>0){ *tj(,:!
int j=stack[top--]; O>pX(DS
L
int i=stack[top--]; 4@fv%LOQo
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pivotIndex=(i+j)/2; Ga02Zk
pivot=data[pivotIndex]; ,on]Fts
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SortUtil.swap(data,pivotIndex,j); R]%"YQ V
7P3pjgh
file://partition @ U=y}vi8
l=i-1; %r1#G.2YW
r=j; &,G2<2_ b
do{ !gW`xVGv
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \;N+PE
SortUtil.swap(data,l,r); o+{,>t
} @ywtL8"1~
while(l SortUtil.swap(data,l,r); Jfr'OD2$ %
SortUtil.swap(data,l,j); FCNYfjB%
5n2!Y\
if((l-i)>THRESHOLD){ C lf;+G0
stack[++top]=i; w*XM*yJHU
stack[++top]=l-1; &6OY^6<
} wJ2cAX;"
if((j-l)>THRESHOLD){ nE8z1hBUq
stack[++top]=l+1; ^L$`)Ja
stack[++top]=j; VnW6$W?g
} YSGE@
hQx*#:ns
} D^O[_/i&
file://new InsertSort().sort(data);
p*lP9[7
insertSort(data); ,e'm@d$Q*
} lgiKNZgB?
/** 7<]&pSt=
* @param data gq+0t
*/ ]2f-oz*hU
private void insertSort(int[] data) { ?P[:,0_
int temp; 3G4WKg.^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +I5\`By=
} QDY uJ&!h
} vaF1e:(
} &q|vvF<G
IQ\!wWKmY
} Xk|a%%O*H
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归并排序: %%X/gvaJ
Xxh^4vKjX
package org.rut.util.algorithm.support; &cyB}Gv
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import org.rut.util.algorithm.SortUtil; axC{azo|
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/** 6
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* @author treeroot YC%xW*
* @since 2006-2-2 Y~*p27@fR
* @version 1.0 M/W9"N[ta
*/ }*!L~B!
public class MergeSort implements SortUtil.Sort{ zZ-/S~l
pSQ2wjps
/* (non-Javadoc) , Zie2I?q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |g{50r'=
*/ J ##a;6@
public void sort(int[] data) { W<&/5s
int[] temp=new int[data.length]; 5KB Z-,
mergeSort(data,temp,0,data.length-1); C\"C12n{
} ).,twf58
vh2/d.MO
private void mergeSort(int[] data,int[] temp,int l,int r){ tlO=>
int mid=(l+r)/2; [4qvQ7Y
!
if(l==r) return ; 5D/Td#T04
mergeSort(data,temp,l,mid); *fi`DiO
mergeSort(data,temp,mid+1,r); ,.{M1D6'R`
for(int i=l;i<=r;i++){ W="pu5q$5
temp=data; g,YF$:e
} BPW.&2?<
int i1=l; V+sZ;$
int i2=mid+1; nO6UlY
for(int cur=l;cur<=r;cur++){ IG}yGGn
if(i1==mid+1) 4Kj8i
data[cur]=temp[i2++]; qYe`</
else if(i2>r) L=#B>Eu
data[cur]=temp[i1++]; s'tXb=!HO
else if(temp[i1] data[cur]=temp[i1++]; \``w>Xy8
else F',1R"/}
data[cur]=temp[i2++]; z I9jxwXU
} ysp,:)-%G@
} fMf;
s3ASA.*
} +-t&li%F
(Q `Ps/
改进后的归并排序: x^[0UA]S9
u$nmnd`g
package org.rut.util.algorithm.support; cJm},
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"
import org.rut.util.algorithm.SortUtil; K
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l8M}82_
/** 'Eia=@
* @author treeroot DfkGNBY
* @since 2006-2-2 @CR<&^s5V
* @version 1.0 #l)o<Z
*/ wk'(g_DP
public class ImprovedMergeSort implements SortUtil.Sort { 3:sc%IDP
1A;,"8kBd
private static final int THRESHOLD = 10; XH0Vs.w
c;29GHs2
/* HIj:?y
* (non-Javadoc) o|84yT!~
* A0.xPru1p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o^uh3,.
*/ Ia9!ucN7DA
public void sort(int[] data) { ?o]NV
int[] temp=new int[data.length]; (u8OTq@
mergeSort(data,temp,0,data.length-1); Wvd-be
} &2y9J2aA
'Q7t5v@FF
private void mergeSort(int[] data, int[] temp, int l, int r) { jfvlkE-uK
int i, j, k; P-^-~/>n
int mid = (l + r) / 2; Lo[;{A$u
if (l == r) ='Oxy
return; (Ww
SisC~
if ((mid - l) >= THRESHOLD) 4,)QV_?
mergeSort(data, temp, l, mid); # NK{]H$fd
else #"C*dNAB
insertSort(data, l, mid - l + 1); ~h +B&F+5
if ((r - mid) > THRESHOLD) =fy.'+
mergeSort(data, temp, mid + 1, r); ]t17= Lr?
else 1G(wESe
insertSort(data, mid + 1, r - mid); 2,|@a\H
G'HLnx}Yi
for (i = l; i <= mid; i++) { N1n\tA?
temp = data; 5M8
} Pa; *%7
for (j = 1; j <= r - mid; j++) { Cx) N;x
temp[r - j + 1] = data[j + mid]; h4slQq~K
} )=N.z6?
int a = temp[l]; h_Er$ZT64
int b = temp[r]; >9g^-~X;v
for (i = l, j = r, k = l; k <= r; k++) { E/% F0\B
if (a < b) { w3>G3=b
data[k] = temp[i++]; KJ-Q$
M
a = temp; (a,`Y.
} else { 0icB2Jm:D}
data[k] = temp[j--]; JO87rG
b = temp[j]; s.Mrd~(Drz
} 03
v\v9<T
} #s}tH$MT#
} =/xXB
f|!@H><
/** {qry2ZT5
* @param data LM.#~7jC
* @param l jNIz:_c-~
* @param i !P6y_Frpe
*/ ri9n.-xs
private void insertSort(int[] data, int start, int len) { Eh`W J~
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); M9yqJPS}B
} #TP Y%
}
G0r(xP?
} ,5sv;
} {5fq4AA6
noT}NX%
堆排序: zzKU s "u
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TN"
package org.rut.util.algorithm.support; QX-M'ur99
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import org.rut.util.algorithm.SortUtil; ;ZrFy=Iv
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/** "bjbJC&T
* @author treeroot 6~k qU4lL
* @since 2006-2-2 P_@ty~u
* @version 1.0 M?$tHA~OX
*/ 52
DSKL
public class HeapSort implements SortUtil.Sort{ O#U_mgfzJ
4vH.B)S-
/* (non-Javadoc) 6>EoU-YX}l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =\<!kJ\yH
*/ OBP iLCq
public void sort(int[] data) { twTRw:.!f
MaxHeap h=new MaxHeap(); 5bWy=Xk
B
h.init(data); {\=NZ\
for(int i=0;i h.remove(); r2Q) Q
System.arraycopy(h.queue,1,data,0,data.length); Lhgs|*M
} C4C!-12
TF,a`?c`
private static class MaxHeap{ Od]wh
c$3ZEe
void init(int[] data){ 6Qm .k$[
this.queue=new int[data.length+1]; dnX^ ?
for(int i=0;i queue[++size]=data; ui^v.YCMI
fixUp(size); *\wf(o>Q
} K;f=l5
} A`b
)7+mB
}% ?WS
private int size=0; ;77q~_g$
A'? W5~F
private int[] queue; D-5~CK4`
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public int get() { xWty2/!h
return queue[1]; 0h 2MmI#
} [WunA,IuR
<=~'Pd-f(
public void remove() { 5z:/d `P[
SortUtil.swap(queue,1,size--); %gx>|
fixDown(1); tgm(tDL
} Yf^/YLLS
file://fixdown O[')[uo8s
private void fixDown(int k) { gq?~*4H
int j; n%P,"V
while ((j = k << 1) <= size) { Rv+p4RgA
if (j < size %26amp;%26amp; queue[j] j++; ?x =Sm|Ej
if (queue[k]>queue[j]) file://不用交换 Fd0\T#k
break; ^TY8,qDA
SortUtil.swap(queue,j,k); SVyJUd_
k = j; =}4lx^`oeT
} l'Z `%}R
} 3_k3U
private void fixUp(int k) { N_8L8ds5
while (k > 1) { [$GQ]Y
int j = k >> 1; 2$QuR~
if (queue[j]>queue[k]) t!vlZNc
break; x1*@PiO,.
SortUtil.swap(queue,j,k); Z{.L_]$I
k = j; \U'TL_Ql
} 5'O.l$)y
} u&Dd9kMz
iJK rNRj
} 4K*DEVS
]z /
} 'Xzi$}E D
^-7{{/
SortUtil: nnO@$T
g|l|)T.s
package org.rut.util.algorithm; +^.Q%b0Xx
/T2f~1R
import org.rut.util.algorithm.support.BubbleSort; j~Xn\~*n
import org.rut.util.algorithm.support.HeapSort; [Z?vC
import org.rut.util.algorithm.support.ImprovedMergeSort; ?rH=< #@
import org.rut.util.algorithm.support.ImprovedQuickSort; ]^\+B4
import org.rut.util.algorithm.support.InsertSort; =!Y{Mz
import org.rut.util.algorithm.support.MergeSort; 6hm6h7$F1
import org.rut.util.algorithm.support.QuickSort; gb0ZGnI
import org.rut.util.algorithm.support.SelectionSort; &U/~*{
import org.rut.util.algorithm.support.ShellSort; QCWk[Gx
cB[.ET$
/** 4)nQBFX
* @author treeroot *:A)j?(
* @since 2006-2-2 `Lu\zR%<
* @version 1.0 }UWRH.;v
*/ eL!G, W
public class SortUtil { /C}fE]n{X
public final static int INSERT = 1; Kq0hT4w
public final static int BUBBLE = 2; J#W>%2"s
public final static int SELECTION = 3; L:F:ZOM6`
public final static int SHELL = 4; jNNl5.
public final static int QUICK = 5; t|zLR
public final static int IMPROVED_QUICK = 6; 6Gs,-Kb:
public final static int MERGE = 7; Cx/duodp
public final static int IMPROVED_MERGE = 8; ^5~[G%G4
public final static int HEAP = 9; S. OGLLprp
jQ31u
public static void sort(int[] data) { $rC`)"t
sort(data, IMPROVED_QUICK); DDhc ^(
} h@D4~(r
private static String[] name={ 9? W38EF
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;nJCd1H
}; )FqE8oN-
3?uP$(l
private static Sort[] impl=new Sort[]{ ",rA
new InsertSort(),
'[#uf/~W
new BubbleSort(), P5P<-T{-c
new SelectionSort(), n1W}h@>8
new ShellSort(), :r/rByd'
new QuickSort(), _n{6/
new ImprovedQuickSort(), Cst>'g-yB
new MergeSort(), }J$PO*Q@'
new ImprovedMergeSort(), n%<.,(.(S
new HeapSort() zj;y`ENj
}; F<w/@.&m
#zt+U^#)
public static String toString(int algorithm){ vP'R7r2Yx
return name[algorithm-1]; 3-8Vw$u
} {UYqRfgbZ
uyG4zV\h*
public static void sort(int[] data, int algorithm) { $P@P}%2
impl[algorithm-1].sort(data); q+o(`N'~G
} MU&5&)m
"v3u$-xN1
public static interface Sort { aV(*BE/@F
public void sort(int[] data); lv ^=g
} I/)dXk~
{+t'XkA
public static void swap(int[] data, int i, int j) { ~ab"q%
int temp = data; {hRAR8
data = data[j]; Qg
_?..%
data[j] = temp; O!]wJ
} Z9aDE@A
} r% '2a+}D