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。 !>TVDN>
插入排序: b] DF7 U
x~j>Lvw L
package org.rut.util.algorithm.support; ^ b{0|:
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import org.rut.util.algorithm.SortUtil; ]OL
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/** -M2c8P:.b
* @author treeroot <.HX_z3l
* @since 2006-2-2 m=j xTZK
* @version 1.0 )[|TxXz
d
*/ kl4FVZof
public class InsertSort implements SortUtil.Sort{ @]uvpI!h
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/* (non-Javadoc) Wz)s#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Jx.?8
*/ T?4MFx#
public void sort(int[] data) { $ jWe!]ASU
int temp; 1Jg&L~Ws"
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y2;uG2IS_g
} &m&Z^CA
} `wj<d>m
} KC9_H>
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} 5Mf bO3
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冒泡排序: J.W0F# ?
sgu#`@o
package org.rut.util.algorithm.support; HJ?p,V q5_
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import org.rut.util.algorithm.SortUtil; v^1_'PAXu
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/** ShbW[*5
* @author treeroot `qnSq(tNq
* @since 2006-2-2 Clr~:2g\
* @version 1.0 ?9'Ukw`
g
*/ Xb6X'rY
public class BubbleSort implements SortUtil.Sort{ =Y
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/* (non-Javadoc) U2m86@E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LfOXgn\
*/ B*!{LjXV
public void sort(int[] data) { o9&1Ct
int temp; G`8i{3:
for(int i=0;i for(int j=data.length-1;j>i;j--){ m%hI@'
if(data[j] SortUtil.swap(data,j,j-1); d#xi_L!
} ]awu7}C9Z
} luXcr
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} 0`VA}c
} mj:X'BVA
@ px2/x
} K,(37Id'
Kq&b1x
选择排序: 1(t{)Z<
-i*{8t
package org.rut.util.algorithm.support; RG[b+Qjn
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import org.rut.util.algorithm.SortUtil; u}Kc>/AF
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/** S bI7<_
* @author treeroot E>>@X^ =
* @since 2006-2-2 9jW/"
* @version 1.0 M9so3L<N0
*/ $fZVh%
public class SelectionSort implements SortUtil.Sort { ;|7]%Z}%
3H"bivK
/* vdA3
* (non-Javadoc) 7bJAOJ'_
* xh|NmZg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _voU^-
*/ $0+n0*fp
public void sort(int[] data) { $bSnbU<
int temp; #fdQ\)#q>
for (int i = 0; i < data.length; i++) { o^HzE;L}
int lowIndex = i; ]$7dkP
for (int j = data.length - 1; j > i; j--) { xg*)o* ?
if (data[j] < data[lowIndex]) { p+6L qk<
lowIndex = j; P(h[QAM
} ^}Vx5[
} e+416
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v
SortUtil.swap(data,i,lowIndex); -aj) _.d
} ]1YyP
} fbv%&z
\ k&(D*u
} j!m42
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Shell排序: A_nu:K-
jiAKV0lX
W
package org.rut.util.algorithm.support; RC{|:@]8
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import org.rut.util.algorithm.SortUtil; hf#[Vns
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/**
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* @author treeroot oW7\T!f
* @since 2006-2-2 &4]~s:F
* @version 1.0 lJ y\Ky(*
*/ A\xvzs.d
public class ShellSort implements SortUtil.Sort{ 8<#S:O4kA
oY;=$8y<q
/* (non-Javadoc) ?-.Qv1hs6p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $/R r|<
*/ L`"B;a&
public void sort(int[] data) { aJ;6!WFW
for(int i=data.length/2;i>2;i/=2){ *21foBfqh
for(int j=0;j insertSort(data,j,i); QVEGd"WvvO
} ik:fq&=
} hlIh(\JZ4s
insertSort(data,0,1); h
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} )wFr%wNe
:>G3N+A)
/** 6|{$]<'
* @param data {Kdr-aC
* @param j vBRW5@
* @param i Rq,ST:
*/ *U{E[<k{
private void insertSort(int[] data, int start, int inc) { Wu:@+~J.h
int temp; R\VM6>SN'S
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); X.YMb
.\<
} L~Hgf/%5
} k uEB
} >wPMJ>
2
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} 4=b{k,kzgA
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快速排序: Td|x~mZv:
P. V #
package org.rut.util.algorithm.support; qjc8 $#zXS
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import org.rut.util.algorithm.SortUtil; #"3az8u
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/** ?:8wDV
* @author treeroot "M`ehgCBr
* @since 2006-2-2 c<T'_93
* @version 1.0 VlLc[eVV
*/ !"dn!X
public class QuickSort implements SortUtil.Sort{ !Eof7LUE
<kY||
/* (non-Javadoc) 'J0Erk8(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,:G3 Y
)
*/ E\ 'X|/$a
public void sort(int[] data) { ab5uZ0@
quickSort(data,0,data.length-1); =2BB ~\G+
} JsA9Xdk`
private void quickSort(int[] data,int i,int j){ [>pqf
int pivotIndex=(i+j)/2; HJV8P2f8`
file://swap QqS?-
SortUtil.swap(data,pivotIndex,j); P2Or|_z
KR4vcI[4
int k=partition(data,i-1,j,data[j]); tOu:j [
SortUtil.swap(data,k,j); x>E**a?!L
if((k-i)>1) quickSort(data,i,k-1); X*cf|g
if((j-k)>1) quickSort(data,k+1,j); nV$ctdusQ
T -'B-g
} RR8Z 9D;
/** Nvef+L,v
* @param data 4_A9o9&_Rh
* @param i wd=xs7Dz<p
* @param j Q<e`0cu|p
* @return &;V3[
*W"
*/ IdvBQ [Gj
private int partition(int[] data, int l, int r,int pivot) { _tGR:E
do{ e 1k\:]6
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); cuw3}4m%
SortUtil.swap(data,l,r); OR\-%JX/5
} X?F$jX|c
while(l SortUtil.swap(data,l,r); uy,ySBY
return l; /_,} o7@t~
} _z3Hl?qk=
te+5@k#t
} gUrb\X
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改进后的快速排序: {]a 6o[}u
R+s_uwS
package org.rut.util.algorithm.support; jJ' LM>e
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import org.rut.util.algorithm.SortUtil; M~G1ZB
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/** {mlJ E>~%
* @author treeroot `tCOe
* @since 2006-2-2 ? }k~>. \
* @version 1.0 yk5T"#'+
*/ }UzO_&Z#6
public class ImprovedQuickSort implements SortUtil.Sort { LX
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private static int MAX_STACK_SIZE=4096; JMMsOA_]
private static int THRESHOLD=10; J{Z-4y
/* (non-Javadoc) zn |=Q$81
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @QAyXwp
*/ 6$'6x2,
public void sort(int[] data) {
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int[] stack=new int[MAX_STACK_SIZE]; u%#s_R
p,?8s%
int top=-1; '9,14e6
int pivot; lB\"*K;
int pivotIndex,l,r; ,]N!I%SI
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stack[++top]=0; jH*+\:UP-
stack[++top]=data.length-1; %;.|?gR
%5_eos&<^)
while(top>0){ ,u}n!quA
int j=stack[top--]; EO|r
int i=stack[top--]; ))n7.pB9/
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pivotIndex=(i+j)/2; mne^PSI:
pivot=data[pivotIndex]; ?-F SDNQ
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SortUtil.swap(data,pivotIndex,j); ^}2 ie|
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file://partition lPS A
l=i-1; t9&z|?Vz
r=j; E(T6s^8
do{
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ii?"`d +JA
SortUtil.swap(data,l,r); .P=uR8
} 9?*BN\E5S
while(l SortUtil.swap(data,l,r); 'aB0abr|
SortUtil.swap(data,l,j); o} #nf$v(
9 Byk/&$U
if((l-i)>THRESHOLD){ Z`xz |:D+
stack[++top]=i; PL8{|Q
stack[++top]=l-1; F}Bc +i#]
} iSxxy1R
if((j-l)>THRESHOLD){ 'JEZ;9}
stack[++top]=l+1; TJ9,c2d+
stack[++top]=j; AWLKve_
} %r5&CUE5?
FhB^E$r%
} Vgs( feGs
file://new InsertSort().sort(data); JF*JFOb
insertSort(data); F9e$2J)C
} W%09.bF
/** ]lF'o&v]
* @param data jlER_I]
*/ :^SpKe(7
private void insertSort(int[] data) { ->}K- n ),
int temp; qEE3x>&T]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z9$x9u
} VEd#LSh
} O0"i>}g4
} a4,bP*H
Do(7LidC5
} {e2 (
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归并排序: Iz2K
3V`K^X3
package org.rut.util.algorithm.support; vi0% jsI
u+s#Fee I
import org.rut.util.algorithm.SortUtil; .jr1<LE
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/** #hd<5+$U}l
* @author treeroot ~u8}s4
* @since 2006-2-2 5vYh~|
* @version 1.0 v%&f00
*/ %@Ks<"9
public class MergeSort implements SortUtil.Sort{ fB"3R-H?O
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/* (non-Javadoc) K4n1#]8i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &tD`~
*/ ?9!tMRb
public void sort(int[] data) { N)
{
int[] temp=new int[data.length]; ;lX:EU
mergeSort(data,temp,0,data.length-1); D{.%Dr?
} @D"#B@j
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private void mergeSort(int[] data,int[] temp,int l,int r){ Xk]5*C]6<
int mid=(l+r)/2; X@9_ukdpu
if(l==r) return ; 2k"a%#H8
mergeSort(data,temp,l,mid); /~7H<^}
mergeSort(data,temp,mid+1,r); :c)<B@NqNo
for(int i=l;i<=r;i++){ 30>TxL=&
temp=data; Eg-b5Z);
} #Opfc8pm'
int i1=l; FPMhHHM
int i2=mid+1; 4,s: G.g
for(int cur=l;cur<=r;cur++){ 'cw0FpQ;
if(i1==mid+1) 2WE
data[cur]=temp[i2++]; I6y&6g
else if(i2>r) RO wbzA)]r
data[cur]=temp[i1++]; "XC6 l4Z
else if(temp[i1] data[cur]=temp[i1++]; rxa"ji!)
else h#]}J}si
data[cur]=temp[i2++]; <mY`<(bc
} {, APZ`q|
} c#"\&~. P
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} w,3`Xq@
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改进后的归并排序: ZFW}Vnl
`yYgL@Zt
package org.rut.util.algorithm.support; dN |w;|M
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import org.rut.util.algorithm.SortUtil; J@Zm8r<
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/**
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* @author treeroot 5\=9&{WjND
* @since 2006-2-2 ts?b[v
* @version 1.0 &p;};n
*/ 6^{ hY^Z
public class ImprovedMergeSort implements SortUtil.Sort { :jp?FF^j;
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private static final int THRESHOLD = 10; '12|:t&7
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/* QV .A.DK
* (non-Javadoc) &@+K%qW[e
* gP(-Op
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @/$mZ]|T
*/ F|P2\SPL
public void sort(int[] data) { 1v2wP2]|;
int[] temp=new int[data.length]; sgX}`JH?z
mergeSort(data,temp,0,data.length-1); w,}}mC)\*
} n"FOCcTIs
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private void mergeSort(int[] data, int[] temp, int l, int r) { ljt1:@SN(
int i, j, k; 3:Z(tM&-O
int mid = (l + r) / 2; m]"YR_
if (l == r) C4 Wdt
return; 3Vw%[+lY9
if ((mid - l) >= THRESHOLD) J1R%w{
mergeSort(data, temp, l, mid); &-b=gnT
else -|)[s[T~m
insertSort(data, l, mid - l + 1); oQyG
if ((r - mid) > THRESHOLD) .k*2T<p$rC
mergeSort(data, temp, mid + 1, r); )D[xY0Y~
else }7.q[ ^oF
insertSort(data, mid + 1, r - mid); EL}v>sC
Tl%4L%
bE
for (i = l; i <= mid; i++) { LWQ BGiJj
temp = data; --^D)n
} rXm!3E6JL
for (j = 1; j <= r - mid; j++) { A\#?rK
temp[r - j + 1] = data[j + mid]; <BU|?T6~
} 'h=
>ej*
int a = temp[l]; *e>:K$r
int b = temp[r]; e0$mu?wd-
for (i = l, j = r, k = l; k <= r; k++) { bR8)s{p6
if (a < b) { SD.ze(P
data[k] = temp[i++]; OT *W]f
a = temp; GzB%vsv95
} else { "V^jAPDXb
data[k] = temp[j--]; %[Ds-my2
b = temp[j]; I^ >zr.zA
} -+PPz?0
} c''O+,L1+
} rSJ}qRXwU
=VY4y]V
/** {VNeh
* @param data ,3n}*"K
* @param l #TSM#Uqe
* @param i ncA2en?
*/ hT]p8m
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private void insertSort(int[] data, int start, int len) { {(q Un
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Bhs`Y/Ls-
} )?xt=9Lh
} HkV/+ {;S~
} CTP%
} cq=R
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堆排序: eS.]@E-T
A"k,T7B
package org.rut.util.algorithm.support; 0Gs]>B4r/
b
gDDys
import org.rut.util.algorithm.SortUtil; 3AL.UBj&}
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/** Y$Ke{6 4
* @author treeroot /vV 0$vg
* @since 2006-2-2 .Lp-'!i
* @version 1.0 d{trO;%#f
*/ LtU+w*Gj
public class HeapSort implements SortUtil.Sort{ wS^-o
v6n(<0:
/* (non-Javadoc) T*ic?!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c"$_V[m
*/ n$?oZ*;
public void sort(int[] data) { }rQ*!2Y?
MaxHeap h=new MaxHeap(); G`P+J
h.init(data); ;8v5 qz
for(int i=0;i h.remove(); >mV""?r]
System.arraycopy(h.queue,1,data,0,data.length); SeTU`WLEm
} y5ExEXa
<?g{Rn
private static class MaxHeap{ (j/O=$mJ
p4Y9$(X
void init(int[] data){ ,-"]IR!,w
this.queue=new int[data.length+1]; }* t~&l0
for(int i=0;i queue[++size]=data; cs5Xd
fixUp(size); p~b$+8#+
} w '"7~uN
} 3OZ}&[3
1_QO>T'
private int size=0; :h3JDQe:.
x V e!
private int[] queue; CP'-CQ\Q
7.t$#fzi
public int get() { wf4Q}l2,d
return queue[1]; F)IP~BE-k
} =3:ltI.'*I
~;W%s
public void remove() { W{h7+X]Y
SortUtil.swap(queue,1,size--); %Fv)$ :b
fixDown(1); vK C>t95
} 4kM<L}J#
file://fixdown )'g vaT
private void fixDown(int k) { >xjy
P!bca
int j; <b\urtoJ
while ((j = k << 1) <= size) { MI }D%n*
if (j < size %26amp;%26amp; queue[j] j++; z)B=<4r
if (queue[k]>queue[j]) file://不用交换 >gE_?%a[
break; R[c_L=
SortUtil.swap(queue,j,k); ;gyE5n-{
k = j; 34=0.{qn
} .<B1i
} hTm}j,H
private void fixUp(int k) { I}WJ0}R
while (k > 1) { ;'p'8lts
int j = k >> 1; h]#)41y<
if (queue[j]>queue[k]) * y B-N;I
break; K0\WN"ua;
SortUtil.swap(queue,j,k); &g!/@*[Nhh
k = j; (G VGoh&
} )3AT=b
} Z7^}G=*
#O
WSy'Qnt
} \abl|;fj
S(6ZX>wv:
} "ir*;|
EHZSM5hu
SortUtil: "Tv7*3>
~-+Zu<
package org.rut.util.algorithm; -eMRxa>
qAS^5|(b[
import org.rut.util.algorithm.support.BubbleSort; =+p+_}C
import org.rut.util.algorithm.support.HeapSort; @2gMtf?<
import org.rut.util.algorithm.support.ImprovedMergeSort; '}u31V"SS
import org.rut.util.algorithm.support.ImprovedQuickSort; Pa}vmn1$
import org.rut.util.algorithm.support.InsertSort; F?=u:
import org.rut.util.algorithm.support.MergeSort; Eg*3**gTO
import org.rut.util.algorithm.support.QuickSort; Z-@}~#E
import org.rut.util.algorithm.support.SelectionSort; !UTJ) &
import org.rut.util.algorithm.support.ShellSort; MQ44uHJ
5qy}~dQ
/** 3o>t~Sfi
* @author treeroot ^|C|=q~:
* @since 2006-2-2 ja/[PHq"
* @version 1.0 ?=kswf
*/ *-_Npu6
public class SortUtil { Qx;A; n!lw
public final static int INSERT = 1; 7o. 'F
public final static int BUBBLE = 2; &iZYBa
public final static int SELECTION = 3; kdCOcJB
public final static int SHELL = 4; s/M~RB!w
public final static int QUICK = 5; J~q+G
public final static int IMPROVED_QUICK = 6; dI-5%Um
public final static int MERGE = 7; ydQS"]\g
public final static int IMPROVED_MERGE = 8; 16|S 0 )
public final static int HEAP = 9; __j8jEV
nY)Pxahm 7
public static void sort(int[] data) { `Tj}4f
sort(data, IMPROVED_QUICK); 3;NRW+
} 7VcVI? ?
private static String[] name={ n^N]iw{G
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 1!3kAcBP
}; +`8)U 3u0
"N]o5d
private static Sort[] impl=new Sort[]{ wVDB?gy%#
new InsertSort(), : qRT9n$
new BubbleSort(), P~e$iBH'
new SelectionSort(), dU6LB+A
new ShellSort(), I0K!Kcu5Iu
new QuickSort(), de9l;zF
new ImprovedQuickSort(), x[UO1% _o-
new MergeSort(), I})t
new ImprovedMergeSort(), K/`RZ!
new HeapSort() GDp p`'\
}; Cg pT(E\E
OPW"ABJ
public static String toString(int algorithm){ PU5mz.&0'
return name[algorithm-1]; C+XZDY(=Z
} acQNpT
;
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public static void sort(int[] data, int algorithm) { ~qxXou,J
impl[algorithm-1].sort(data); Y&