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。 :yi} CM4
插入排序: So ~QZ%YA
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package org.rut.util.algorithm.support; YwZx{%f
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import org.rut.util.algorithm.SortUtil; pV\ >?
/** Z-_Xt^N
* @author treeroot lx2%=5+i;
* @since 2006-2-2 /CKn XU;
* @version 1.0 U1fqs{>
*/ CK|AXz+EN
public class InsertSort implements SortUtil.Sort{ 5&_")k3$*
'Ox "YE
/* (non-Javadoc) ZFH-srs{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]mNsG0r6
*/ L*|P'
public void sort(int[] data) { }.WO=IZ
int temp; [ybK
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o
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}f
} TXV^f*
} -k2|`t _
} ?|}qT05
7h41 E#
} 9B83HV4J
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冒泡排序: #D?w,<_8,
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package org.rut.util.algorithm.support; aTvLQ@MQ
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import org.rut.util.algorithm.SortUtil; p0l.f`B
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/** GiK,+M"d
* @author treeroot aZa1 eE
* @since 2006-2-2 $[Nf?`f(t_
* @version 1.0 7zU~X,
*/ U,fPG/9
public class BubbleSort implements SortUtil.Sort{ vflC{,{=k>
:M`~9MCRf
/* (non-Javadoc) *}Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w~pe?j_F$
*/ oOubqx
public void sort(int[] data) { Z0'LD<
int temp; mF4OLG3L0
for(int i=0;i for(int j=data.length-1;j>i;j--){ )$a6l8
if(data[j] SortUtil.swap(data,j,j-1); E KN<KnU%
} 1;{nU.If
} $83Qd
} /P46k4M1U
} ,VUOsNN4\
ux6)K= ]
} MU `!sb*
/n$R-Q
选择排序: P%Q'w
HB*BL+S06
package org.rut.util.algorithm.support; 'Ce?!UO
#}~?8/h!
import org.rut.util.algorithm.SortUtil; 0a@tPskV
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/** $/(``8li_
* @author treeroot [(TmAEON
* @since 2006-2-2 Q.V@Sawe5
* @version 1.0 nG?Z* n
*/ 8NE[L#k
public class SelectionSort implements SortUtil.Sort { Uqj$itqUQ
=eDC{/K
/* i=rA;2>
* (non-Javadoc) ;yjw(OAI*
* | "M1+(k7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ytqx0
*/ i*&b@.7N
public void sort(int[] data) { g_>E5z.
int temp; jJ2{g> P0P
for (int i = 0; i < data.length; i++) { {3K]Q=
int lowIndex = i; 0lOan
for (int j = data.length - 1; j > i; j--) { |m*l/@1
if (data[j] < data[lowIndex]) { >lek@euqw
lowIndex = j; $DnJ/hg;qD
} !B9Yw/Ba
} _PwPLSg
SortUtil.swap(data,i,lowIndex); @ IDY7x27
} :iQJ9Hdz
} <1x u&Z7
9ku|w#%I
} vtK.7AF
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Shell排序: V}Q`dEk2r
#\_FSr fX
package org.rut.util.algorithm.support; K9nW"0>
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import org.rut.util.algorithm.SortUtil; zc,X5R1
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/** dPV<:uO
* @author treeroot 5*90t{#
* @since 2006-2-2 rF{,]U9`
* @version 1.0 Zk|PQfi+
*/ MA%g-}
public class ShellSort implements SortUtil.Sort{ sdd%u~4,X
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,
/* (non-Javadoc) h+YPyeAs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &=T>($3r94
*/ 'b >3:&
public void sort(int[] data) { h{jm
for(int i=data.length/2;i>2;i/=2){ I-kK^_0mV<
for(int j=0;j insertSort(data,j,i); fti0Tz'
} _KyhX|
} KxFA@3
insertSort(data,0,1); p -!/p#
} o(D_ /]'8
@|OGxQoC
/** L$, Kdpj
* @param data cmd7-2
* @param j W~l.feW$i
* @param i #0^a-47PA<
*/ m>!o
Yy_
private void insertSort(int[] data, int start, int inc) { :r:x|[3.
int temp; C&EA@U5X^
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lD#
yXLaC\
} ~~p )_
} ir|L@Jj,
} 4Y
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/:,}hy+U
} !SLfAFcS
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快速排序: \"5p)(
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package org.rut.util.algorithm.support; fX1Ib$v
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import org.rut.util.algorithm.SortUtil; ;vk>k0S
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/** +*eVi3
* @author treeroot 9%MgA ik(
* @since 2006-2-2 $}0\sj%
* @version 1.0 yVpru8+eD
*/ |gT8 QP
public class QuickSort implements SortUtil.Sort{ $HRl:KDdP~
(~"#=fs.L
/* (non-Javadoc) :#N]s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T/hz23nH
*/ #.,LWL]
public void sort(int[] data) { q+?q[:nR-
quickSort(data,0,data.length-1); Y%zWaH
} 6J-=6t|
private void quickSort(int[] data,int i,int j){ \t=#MzjR
int pivotIndex=(i+j)/2; .^ba*qb`{
file://swap 85A7YraL
SortUtil.swap(data,pivotIndex,j); c;#gvE
W}Rzn
int k=partition(data,i-1,j,data[j]); UMPW<>z
SortUtil.swap(data,k,j); x4?g>v*J
if((k-i)>1) quickSort(data,i,k-1); .`&k`
if((j-k)>1) quickSort(data,k+1,j); 7WNUHLEt
Jr(Z Ym'
} @v\8+0
/** ArT@BqWd
* @param data .rl Lt5b%
* @param i .GCJA`0h
* @param j nH+wU;M
* @return 8>I4e5Ym
*/ od&wfwk(
private int partition(int[] data, int l, int r,int pivot) { dI%N wl%
do{ _.m|Ml,`{
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); D'UIxc8
SortUtil.swap(data,l,r); [mG!-.ll
} :"K9(XKKU
while(l SortUtil.swap(data,l,r); 2f rwU~y
return l; | `?J2WGe
} @ykl:K%ke
@$~;vS
} ~svea>Fmr
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改进后的快速排序: S++jwP
#aE>-81SS&
package org.rut.util.algorithm.support; )3 '8T>^<K
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import org.rut.util.algorithm.SortUtil; *3fhVl=8^*
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/** pMf
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* @author treeroot ]#'&x%m
* @since 2006-2-2 5'|W(yR}
* @version 1.0 ;[:IC^9fv
*/ gA] 3h8%w
public class ImprovedQuickSort implements SortUtil.Sort { *(Z\"o!
aR)w~s\6
private static int MAX_STACK_SIZE=4096; DX/oHkLD'
private static int THRESHOLD=10; Y/L*0M.<
/* (non-Javadoc) wxF\enDY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c?Mbyay
*/ +u`4@~D#
public void sort(int[] data) { o"p['m*g
int[] stack=new int[MAX_STACK_SIZE]; D]WrPWL8v
e0]%ko"
int top=-1; 7gRR/&ZK
int pivot; P9jSLM
int pivotIndex,l,r; +iNp8
j.\0p-,
stack[++top]=0; E!=Iz5
stack[++top]=data.length-1; >H,E3Z
vm=d?*cR
while(top>0){ \9R=fA1 8
int j=stack[top--]; MG^YT%f
int i=stack[top--]; FA%V>&;`
y#/P||PM
pivotIndex=(i+j)/2; {r#uD5NJ/
pivot=data[pivotIndex]; d@ ]N
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SortUtil.swap(data,pivotIndex,j);
c^z)[
qu;$I'Ul%
file://partition 9&Z+K'$=
l=i-1; xiqeKoAD
r=j; tF.N
do{ mp*?GeV?M
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); O;0VKNn['
SortUtil.swap(data,l,r); jcRe),
} @qB>qD~WsD
while(l SortUtil.swap(data,l,r); G(bl)p^
SortUtil.swap(data,l,j); FgMQ=O 2
xZVZYvC,t
if((l-i)>THRESHOLD){ 'oUTY *
stack[++top]=i; Fx:4d$>;
stack[++top]=l-1; bR?xz-g%<3
} fk\]wFj
if((j-l)>THRESHOLD){ n8i: /ypB
stack[++top]=l+1; mRxeob
stack[++top]=j; ^,`]Q)P^
} `w)yR>lqh
XI,= W
} CQ7NQ^3k
file://new InsertSort().sort(data); 6lUC$B Y
insertSort(data); 7/)0{B4U'
} $h5QLN
/** wU"w
* @param data (#]9{C;
*/ BQ B<+o'
private void insertSort(int[] data) { Xi w
int temp; Yaz/L)Y;R
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U6YHq2<
} ;s+3#Py
} =>@
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} ~Q}!4LH
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} i9T<(sdK+
35:RsL
归并排序: zT93Sb
.eyJ<b9
package org.rut.util.algorithm.support; f*VXg[&\\F
JkKbw&65
import org.rut.util.algorithm.SortUtil; sj6LrE=1
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/** Q
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* @author treeroot }]^/`n
* @since 2006-2-2 3#eAXIW[
* @version 1.0 -vc
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*/ t[MM=6|Wb
public class MergeSort implements SortUtil.Sort{ "6v_<t`q"
n$ E$@
/* (non-Javadoc) S>jOVWB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E%a&6W
*/ #c~-8=
public void sort(int[] data) { l8e)|MSh
int[] temp=new int[data.length]; ";DozPU
mergeSort(data,temp,0,data.length-1); p$` ^A
} &kT!GU^n
f+\ UVq?
private void mergeSort(int[] data,int[] temp,int l,int r){
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int mid=(l+r)/2; +Eel|)Z*Q
if(l==r) return ; G2b"R{i/,
mergeSort(data,temp,l,mid); i(V
mergeSort(data,temp,mid+1,r); !/X>k{
for(int i=l;i<=r;i++){ &-m}w :j=
temp=data; at1oxmy
} hf;S#.k
int i1=l; +RnWeBXAT
int i2=mid+1; ?8;WP&
for(int cur=l;cur<=r;cur++){ <;cch6Z
if(i1==mid+1) N,:G5WxW
data[cur]=temp[i2++]; Dn#UcMO>W
else if(i2>r)
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data[cur]=temp[i1++]; PfGiJ]:V-u
else if(temp[i1] data[cur]=temp[i1++]; !sYZ1;WAO
else
:z6?
data[cur]=temp[i2++]; 6o*'Q8h
} U/xzl4m6
} MPYYTQ1FB
_xnJfW_
} >ul&x!?@
6X$nZM|g,
改进后的归并排序: +>yspOEz
fuWAw^&
package org.rut.util.algorithm.support; vFeR)Ox's
Pon0(:#1
import org.rut.util.algorithm.SortUtil; ;alt% :$n
KIKIag#
/** ^==Tv+T9U
* @author treeroot 'z@]hm#
* @since 2006-2-2 -lXQQ#V
-
* @version 1.0 C'jCIL
*/ CIRMAX
public class ImprovedMergeSort implements SortUtil.Sort { f 0~Z@\
7e D`
is
private static final int THRESHOLD = 10; w7 \vrS>&
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/* J?tnS6V
* (non-Javadoc) 6="o&!
* k0TQFx.A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fG{3S:TQq
*/ .k#O[^~]
public void sort(int[] data) { dF|R`Pa2ML
int[] temp=new int[data.length]; 1f?Fuw
mergeSort(data,temp,0,data.length-1); uzLm TmM+
} `m$,8f%j6_
JIc9csr:b
private void mergeSort(int[] data, int[] temp, int l, int r) { @]42.oP
int i, j, k; 8:uh0
int mid = (l + r) / 2; :_+U[k(#
if (l == r) K9K.mGYc
return; m |.0$+=
if ((mid - l) >= THRESHOLD) ISTAJ8"
D
mergeSort(data, temp, l, mid); u;b 6uE
else +aqQa~}r
insertSort(data, l, mid - l + 1); [$fB]7A
if ((r - mid) > THRESHOLD) =PnNett}a
mergeSort(data, temp, mid + 1, r); !~j9Oc^
else {96NtR0Z
insertSort(data, mid + 1, r - mid); Zjs,R{
]{I>HA5[
for (i = l; i <= mid; i++) { y{XNB}E
temp = data; *$/Go8t4u
} ucbtPTFYvr
for (j = 1; j <= r - mid; j++) { 8
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temp[r - j + 1] = data[j + mid]; *Tmqs@L
} FRQkD%k
int a = temp[l]; .mOm@<Xdg
int b = temp[r]; Oo
^AE
for (i = l, j = r, k = l; k <= r; k++) { !A14\
if (a < b) { 1k"i"kRM
data[k] = temp[i++]; vi[~Qt
a = temp; B =DV!oUg
} else { pTJ_DH
data[k] = temp[j--]; )5Cqyp~P
b = temp[j]; >z,Y%A
} &?gcnMg$,J
} R/2L9Lcv
} HD,6
#}8VUbJ
/** OSom-?|w
* @param data P8tCzjrV
* @param l $-E<{
* @param i "'>fTk_
*/ r8A'8g4cM
private void insertSort(int[] data, int start, int len) { !u`f?=s;
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); O_5;?$[m
} e0#{'_C
} @#9xSs#
} tao9icl*`
} :MH=6
kjSzuqB
堆排序: -7 EwZRS@9
77 ?TRC
package org.rut.util.algorithm.support; sr~VvciIy
% 5BSXAc
import org.rut.util.algorithm.SortUtil; C3 m_sv#e
Gr3 q
/** DG3Mcf@5
* @author treeroot ADMeOdgca
* @since 2006-2-2 Q0Gfwl
* @version 1.0 HS1{4/
*/ jank<Q&w
public class HeapSort implements SortUtil.Sort{ j\.e6&5%SS
^Je*k)COn
/* (non-Javadoc) :rvBx"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -{yG+1
*/ T{BGg
public void sort(int[] data) { 0+A#k7c6p
MaxHeap h=new MaxHeap(); ZV07;`I
h.init(data); za8+=?
for(int i=0;i h.remove(); S:c
lyx
System.arraycopy(h.queue,1,data,0,data.length); )EN,Ry
} 9Lqz:4}
`EiL~*
private static class MaxHeap{ LBcqFvj{&
%Wc$S]>i
void init(int[] data){ #4Cf-$J
this.queue=new int[data.length+1]; {|e7^_ ke
for(int i=0;i queue[++size]=data; E/E|*6R
fixUp(size); &(20*Vn,O
} UG<<.1JL
} WkoYkkuzj
pU u')y
private int size=0; >Q)S-4iR
g
G|4+' t
private int[] queue; 4&~*;an7
YIYuqtnSJ
public int get() { >EgMtZ88.<
return queue[1]; W7IAW7w8U
} rE\&FVx
b_@bS<wsF}
public void remove() { F<,"{L
SortUtil.swap(queue,1,size--); g#5t8w
fixDown(1); I;mc:@R<
} Ej`G(
file://fixdown fqol-{F.V
private void fixDown(int k) { {_4zm&
int j;
o7AI
while ((j = k << 1) <= size) { !,*Uvs@b
if (j < size %26amp;%26amp; queue[j] j++; 2}ywNVS
if (queue[k]>queue[j]) file://不用交换 L_>LxF43
break; McvLU+
SortUtil.swap(queue,j,k); ay28%[Q b4
k = j; JOki4N
} <Oj'0NK-
} ?j}
Fxr
private void fixUp(int k) { oMN
Qv%U
while (k > 1) { az Oib=3fz
int j = k >> 1; 'EkjySZ]F{
if (queue[j]>queue[k]) X|60W
break; <|:$_&(
SortUtil.swap(queue,j,k); `iwGPG!
k = j; cty
} dwm>!h
} `h1>rP
NbUibxJ
} eZ(o _
{.UK{nA?sm
} |%=c<z+8
m9aP]I3g]\
SortUtil: .r-kH&)"GU
}cg 1CT5
package org.rut.util.algorithm; U[!wu]HMF
Zg >!5{T
import org.rut.util.algorithm.support.BubbleSort; g^:7mG6C
import org.rut.util.algorithm.support.HeapSort; o(xt%'L`t
import org.rut.util.algorithm.support.ImprovedMergeSort; Ly6) ,[q~
import org.rut.util.algorithm.support.ImprovedQuickSort; _Tma1~Gq
import org.rut.util.algorithm.support.InsertSort; 0O?!fd n
import org.rut.util.algorithm.support.MergeSort; bj 0-72V
import org.rut.util.algorithm.support.QuickSort; W-vEh
import org.rut.util.algorithm.support.SelectionSort; X""}]@B9z
import org.rut.util.algorithm.support.ShellSort; 6^nxw>-
4n.EA,:g:(
/** Qexv_:C
* @author treeroot cA+O]",}
* @since 2006-2-2 m pM,&7}
* @version 1.0 iIg99c7/&9
*/ ?yvjX90
public class SortUtil { cX48?srG
public final static int INSERT = 1; [2zS@p
public final static int BUBBLE = 2; =]sM,E,n
public final static int SELECTION = 3; 4)d#dy::\
public final static int SHELL = 4; w;T?m,"
public final static int QUICK = 5; ~ponYc.Y
public final static int IMPROVED_QUICK = 6; K_BF=C.k
public final static int MERGE = 7; {`[u XH?3d
public final static int IMPROVED_MERGE = 8; z)pp{
public final static int HEAP = 9; rh(77x1|(G
ZRoOdo94
public static void sort(int[] data) { AW`+lE'?
sort(data, IMPROVED_QUICK); 1;[ZkRbzL
} 4m/L5W:K
private static String[] name={ X1lL@ `r.5
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" u_ym=N57`
}; -r6LndQs
%|By ?i
private static Sort[] impl=new Sort[]{ WR4 \dsgCU
new InsertSort(), #pp6 ycy
new BubbleSort(), =tfS@o/n
new SelectionSort(), `T$CUlt6
new ShellSort(), 4031~A8
new QuickSort(), mybjcsV4
new ImprovedQuickSort(), ZCCwx71j
new MergeSort(), FtxmCIVIV~
new ImprovedMergeSort(), bA3pDt).p
new HeapSort() gA:N>w&<X
}; Twr<MXa
~,P."
public static String toString(int algorithm){ 5TcirVO82
return name[algorithm-1]; +J%9%DqF
} Klk[h
Fu#mMn0c
public static void sort(int[] data, int algorithm) { $ ~2qEe.h
impl[algorithm-1].sort(data); ai(J%"D"
} _#6ekl|%
Y,C3E>}Dq
public static interface Sort { !l1ycQM
public void sort(int[] data); 9\W }p\c
} a$'=a09
Wq]Lb:&