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。 S@S4<R1{\
插入排序: 2
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package org.rut.util.algorithm.support; x{zZ%_F
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import org.rut.util.algorithm.SortUtil; c2,g%(
/** E8"&gblg
* @author treeroot n}e%c B
* @since 2006-2-2 Im!b-1
* @version 1.0 _G @Zn[v
*/ rPyjr(I"_
public class InsertSort implements SortUtil.Sort{ iM;Btv[|
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/* (non-Javadoc) 2p#d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QA;,/iw `
*/ G3+e5/0
public void sort(int[] data) {
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int temp; S;gy:n!t
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |2n*Ds'
} (Fuu V{x|
} TOKt{`2}
} _e;bB?S
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} <Opw"yY&q]
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冒泡排序: rw3tU0j
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package org.rut.util.algorithm.support; F?]J`F\I
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import org.rut.util.algorithm.SortUtil; }cGILH%
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/** ';8 ,RTe
* @author treeroot X[H .t$w5A
* @since 2006-2-2 7-n HPDp'
* @version 1.0 3`vKEThY)
*/ );TB(PQsBT
public class BubbleSort implements SortUtil.Sort{ dY0W=,X$7T
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/* (non-Javadoc) ]3,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DO-M0L
*/ &08dW9H
public void sort(int[] data) { hCF_pt+
int temp; AB,(%JT/2{
for(int i=0;i for(int j=data.length-1;j>i;j--){ s_RK x)w@
if(data[j] SortUtil.swap(data,j,j-1); dhxzW@'nIL
} }fkdv6mz
} z"\w9 @W
} &{glwVKV
} NB'G{),)Z
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} C9MK3vtD.
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选择排序: ^W%F?#ELN2
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package org.rut.util.algorithm.support; yHC[8l8%
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import org.rut.util.algorithm.SortUtil; _z%~m2SP
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/** lX2:8$?X
* @author treeroot 0<uLQVoR2n
* @since 2006-2-2 pM+9K:^B
* @version 1.0 Vj1V;dHv
*/ V_m!<sr (
public class SelectionSort implements SortUtil.Sort { 60nP'xfR
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/* L>E;cDB
* (non-Javadoc) \?Z7|
* 8(y%]#n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?SO!INJ
*/ 8%YyxoCH
public void sort(int[] data) { M=ag\1S&ZF
int temp; fK]%*i_"
for (int i = 0; i < data.length; i++) { cpw=2vnD
int lowIndex = i; 8au Gz
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for (int j = data.length - 1; j > i; j--) { mOHOv61
if (data[j] < data[lowIndex]) { Uf7ACv)Dn
lowIndex = j; "fhQ{b$i
} M=95E$6
}
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SortUtil.swap(data,i,lowIndex); Ja5od
} mS;WNlm\
} -}j(_]t
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} X)Tyxppf'
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Shell排序: /=AFle2(
3)o>sp)Ji$
package org.rut.util.algorithm.support; RyukQY~<W
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import org.rut.util.algorithm.SortUtil; RdyKd_0`Q
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/** 4ME$Z>eN
* @author treeroot <*^|Aj|#
* @since 2006-2-2 kb"Fw:0
* @version 1.0 q27q/q8
*/ F@Wi[K
public class ShellSort implements SortUtil.Sort{ <o3I<ci6
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/* (non-Javadoc) YryMB,\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !T:7xEr
*/ [4YRyx&:++
public void sort(int[] data) { No[9m_
for(int i=data.length/2;i>2;i/=2){ 5izpQ'>
for(int j=0;j insertSort(data,j,i); m*jE\+)=^
} T]1.":
} )=#Js<&3:
insertSort(data,0,1); xZ%3e
sp
} %uV,p!| )
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/** \nuzl
* @param data 3_boEYl0
* @param j Y?0x/2<
* @param i HOH5_E>d
*/ }aa]1X(u
private void insertSort(int[] data, int start, int inc) { 83_mR*tGNp
int temp; \8\TTkVSq
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3*j1v:x`
} $6 Hf[(/ e
} t.RDS2N|
} nSQ]qH&4d
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} }W!w
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快速排序: JgP%4)]LV
cp~6\F;c
package org.rut.util.algorithm.support; b%"/8rK
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import org.rut.util.algorithm.SortUtil; DoO
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/** x5smJ__/
* @author treeroot K%/\XnCY
* @since 2006-2-2 gN(kRhp
* @version 1.0 G)b:UJa"
*/ +8 \?7,FY
public class QuickSort implements SortUtil.Sort{ [)8O\/:
5?Q5cD2]\6
/* (non-Javadoc) 5&L*'kV@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'x?|tKzd
*/ > QN-K]YLL
public void sort(int[] data) { ,-k?"|tQ
quickSort(data,0,data.length-1); U61
LMH
} Zm++5b`W/[
private void quickSort(int[] data,int i,int j){ 0;=]MEk?
int pivotIndex=(i+j)/2; o.|36#Fa
file://swap Er$&}9G+-
SortUtil.swap(data,pivotIndex,j); ?/hS1yD;
x#5[i;-c
int k=partition(data,i-1,j,data[j]); Q;=4']hYU
SortUtil.swap(data,k,j); S{]3e-?
if((k-i)>1) quickSort(data,i,k-1); =x(k)RTDu
if((j-k)>1) quickSort(data,k+1,j); \}=W*xxB
fMW=ss^fu-
} d_Zj W
/** s-x1<+E(
* @param data -H[@]Q4w
* @param i fo/sA9
* @param j 67}8EV!/k
* @return +
>:}
*/ a5pM ~.]
private int partition(int[] data, int l, int r,int pivot) { Pjvb}q=
do{ rij%l+%@#
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~mah.8G
SortUtil.swap(data,l,r); F/tRyq`D
} Wie0r@5E
while(l SortUtil.swap(data,l,r); F8tMZ,:
return l; {IBbN05 ;
} 5RO6YxQ
J &=5h.G$
} D?*du#6
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改进后的快速排序: g%m-*v*
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package org.rut.util.algorithm.support; Q($@{[lT
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import org.rut.util.algorithm.SortUtil; 0lYP!\J3]%
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/** MOB'rPIUI
* @author treeroot }y+a)2
* @since 2006-2-2 OzRo
* @version 1.0 w+!V,lU"^
*/ rXTdhw?+
public class ImprovedQuickSort implements SortUtil.Sort { "av/a
e9S*^2;
private static int MAX_STACK_SIZE=4096; ^n4aoj
private static int THRESHOLD=10; wu{%gtx/;^
/* (non-Javadoc) xZV|QVY;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b!"qbC1
*/ +[S<"}ls7
public void sort(int[] data) { &js$qgY
int[] stack=new int[MAX_STACK_SIZE]; |6Iw\YU
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int top=-1; o?.VW/"
int pivot; XJS^{=/
int pivotIndex,l,r; _wW"Tn]
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stack[++top]=0; ci 22fw0
stack[++top]=data.length-1; !@ AnwV]
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while(top>0){ #q&Nd2y
int j=stack[top--]; k#mL4$]V5N
int i=stack[top--]; 56NDU>j$
k4:=y9`R}$
pivotIndex=(i+j)/2; bsI?=lO
pivot=data[pivotIndex]; LT,zk)5
{ M[iYFg=
SortUtil.swap(data,pivotIndex,j); %t:13eM
%,Y^Tp
file://partition 76c:*bZ
l=i-1; cauKG@:2F
r=j; >w\3.6A
do{ }ri7@HCY4
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Yc5)
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SortUtil.swap(data,l,r); EF 8rh
} w5Ucj*A\
while(l SortUtil.swap(data,l,r); %5Elj<eHZ
SortUtil.swap(data,l,j); d1*0?G TT
4}YHg&@\d%
if((l-i)>THRESHOLD){ <
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stack[++top]=i; +tYskx/
stack[++top]=l-1; EzCi%>q
} YsTF10
if((j-l)>THRESHOLD){ 4QNwu7TeR
stack[++top]=l+1; 4!'4 l=jO
stack[++top]=j; kO/;lrwC
} '^2bC
"Vwk&~B%
} $B%3#-
file://new InsertSort().sort(data); AX )dZdd
insertSort(data); BBl9<ne$
} ?i~mt'O
/** 7~D5Gy
* @param data k>\s6
*/ (|y@ftr@
private void insertSort(int[] data) { `n e9&+
int temp; nqcD#HUv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Et)j6xz/F
} 8..g\ZT
} 7V~
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}
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} -li;w
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归并排序: f+QDjJ?z
8)}A}x
package org.rut.util.algorithm.support; ^p\n/#B
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import org.rut.util.algorithm.SortUtil; FJsg3D*@J
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/** hBW,J$B
* @author treeroot p;2NO&
* @since 2006-2-2 [Ue"#w
* @version 1.0 :&O6Y-/B
*/ PV/ hnVUl
public class MergeSort implements SortUtil.Sort{ &=-{adm
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/* (non-Javadoc) 1-pxM~Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tW3Nry
*/ ~ \7peH%
public void sort(int[] data) { zids2/_*
int[] temp=new int[data.length]; <r8s=<:
mergeSort(data,temp,0,data.length-1); "Za 'K+4
} 2wYY0=k2
=G1
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private void mergeSort(int[] data,int[] temp,int l,int r){ D}pNsQ
int mid=(l+r)/2; gBy7q09r
if(l==r) return ; &[-b#&y
mergeSort(data,temp,l,mid); thQ)J |1
mergeSort(data,temp,mid+1,r); +~EFRiP]
for(int i=l;i<=r;i++){ E&b!Y'
temp=data; io4/M<6<
} {F*81q\
int i1=l; hr GfA
int i2=mid+1; (#r>v
h (
for(int cur=l;cur<=r;cur++){ 9Jf.Ls
if(i1==mid+1) #)<WQZ)
data[cur]=temp[i2++]; :c&F\Q=
else if(i2>r) zCpXF<_C
data[cur]=temp[i1++]; 53?B.\
else if(temp[i1] data[cur]=temp[i1++]; OjY#xO+'
else $4rMYEn08
data[cur]=temp[i2++]; /m*+N9)
} Z E},xU%
} _n3"
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} P%kJq^&
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改进后的归并排序: ,*{9g6
:=,lG ou
package org.rut.util.algorithm.support; 7@9R^,M4:
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import org.rut.util.algorithm.SortUtil; fBt`D
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/** >^+c s^jCM
* @author treeroot 9]*hP](
* @since 2006-2-2 7V7iIbi
* @version 1.0 J~1=?</
*/ aECQ(]q
public class ImprovedMergeSort implements SortUtil.Sort { L[p[m~HjG^
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private static final int THRESHOLD = 10; ^/v!hq_#%&
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/* 3h>56{P
* (non-Javadoc) :~dI2e\:
* Kx5VR4f`J@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PLDp=T%
*/ p |xMXoa`
public void sort(int[] data) { kX:d?*{KB
int[] temp=new int[data.length]; ugMfpT)
mergeSort(data,temp,0,data.length-1); 81/t)Cp
} %DF-;M"8
a2`|6M;
private void mergeSort(int[] data, int[] temp, int l, int r) { jM|-(Es.)
int i, j, k; 5oR/Q|^
int mid = (l + r) / 2; hS 7o=G[
if (l == r) -PH!U Hg
return; aYPD4yX"/
if ((mid - l) >= THRESHOLD) H+2m
mergeSort(data, temp, l, mid); t"L-9kCM
else e8ZMB$byP
insertSort(data, l, mid - l + 1); p7d[)*
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if ((r - mid) > THRESHOLD) ;bxL$1
mergeSort(data, temp, mid + 1, r); _^"0"<,
else -H(\[{3{V
insertSort(data, mid + 1, r - mid); K#<cuHGC
Ju 0
for (i = l; i <= mid; i++) { lQnqPQY
temp = data; B&k"B?9mL
} /qX=rlQ/ n
for (j = 1; j <= r - mid; j++) { eZ[O:W vk:
temp[r - j + 1] = data[j + mid]; |oI]
} $bT<8:g
int a = temp[l]; P% ZCACzV
int b = temp[r]; OKp0@A)8
for (i = l, j = r, k = l; k <= r; k++) { 1{7*0cv$iL
if (a < b) { (*\*7dIo
data[k] = temp[i++]; v08Xe*gNU
a = temp; ;`MKi5g
} else { W|aFEY
data[k] = temp[j--]; 57 eA(uI
b = temp[j]; 5 U{}A\q
} WTP~MJ#C
} l^*'W(%
} gx)!0n;
r @
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/** ^u[n!R\
* @param data PQFr4EY?i
* @param l DU>#eR0G
* @param i h1'j1uI
*/ (lBwkQNQGd
private void insertSort(int[] data, int start, int len) { ^saH^kg1"
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <;
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} AqHH^adzA:
} !uJDhC
} Q(J6;s#b
} 8KU5x#
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堆排序: =u#xPI0:
wN4N2
package org.rut.util.algorithm.support; XFU['BI
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import org.rut.util.algorithm.SortUtil; $8"G9r
ggn:DE"
/** a*gzVE7W#n
* @author treeroot p Y[dJxB
* @since 2006-2-2 c8cPGm#i
* @version 1.0 vUU)zZB~
*/ @L ,hA
v^
public class HeapSort implements SortUtil.Sort{ 4)XZ'~|
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/* (non-Javadoc) =5jng.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lQSKY}h
*/ )LP=IT
public void sort(int[] data) { 93aRWEu3
MaxHeap h=new MaxHeap(); `/0S]?a.{B
h.init(data);
1:+f@#
for(int i=0;i h.remove(); R!8 qkG
System.arraycopy(h.queue,1,data,0,data.length); / .ddx<
} ,xeJf6es
;$Q&2}L[
private static class MaxHeap{ DiLZ5^`]
9+o`/lk1
void init(int[] data){ .7|kxJq
this.queue=new int[data.length+1]; #o]/&T=N=
for(int i=0;i queue[++size]=data; X!vBD
fixUp(size); ^+m6lsuA
} '4""Gz
} 0$~zeG"
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private int size=0; C;C= g1I}
TZ2-%k#
private int[] queue; muc>4!Q
Pq@%MF]5
public int get() { Av#_cL
return queue[1]; u\9t+wi}<
} `(rnD
XDWR]
public void remove() { fi6i{(K
SortUtil.swap(queue,1,size--); O_u2V'jy9
fixDown(1); FXi"o
$N
} ~F
,mc.
file://fixdown -J$,W`#z
private void fixDown(int k) { ~x:B@Ow
int j; CE'd`_;HLn
while ((j = k << 1) <= size) { >8*J ;(:W
if (j < size %26amp;%26amp; queue[j] j++; "?<$>\@;
q
if (queue[k]>queue[j]) file://不用交换 lLb"><8a
break; P'dH*}H
SortUtil.swap(queue,j,k); :Rq>a@Rp
k = j; Kn!n}GtR
} 8 )W{C>
} ?%RN? O(
private void fixUp(int k) { VX!UT=;
while (k > 1) { NR*s7>
int j = k >> 1; ZT\=:X*e
if (queue[j]>queue[k]) {b<;?Du s^
break; jC;^2e
SortUtil.swap(queue,j,k); EPE9HvN
k = j; [-*1M4D9
} gg-4ce/
} U0PQ[Y#\
VKjDK$
} }5 2]
V@QWJZ"
} xTy[X"sJ
yMQZulCWE
SortUtil: xzqgem`[\
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package org.rut.util.algorithm; @.PVUP
lBbUA)z6
import org.rut.util.algorithm.support.BubbleSort; jI-\~
import org.rut.util.algorithm.support.HeapSort; ]Ywj@-*q
import org.rut.util.algorithm.support.ImprovedMergeSort; SP,#KyWP0)
import org.rut.util.algorithm.support.ImprovedQuickSort; UY)e6 Zd
import org.rut.util.algorithm.support.InsertSort; 9&>)4HNd?
import org.rut.util.algorithm.support.MergeSort; nMniHB'
import org.rut.util.algorithm.support.QuickSort; uEK9
import org.rut.util.algorithm.support.SelectionSort; eq|G\XJ
import org.rut.util.algorithm.support.ShellSort; }3"FQ/6C
o
IUjd
/** b R6g^Yf
* @author treeroot zPC&p{S>
* @since 2006-2-2 ranLHm.nB
* @version 1.0 VeJM=s.y7
*/ w}OJ2^
public class SortUtil { &_