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。 k^K76m B
插入排序:
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package org.rut.util.algorithm.support; _8 K|2$X
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import org.rut.util.algorithm.SortUtil; Jg'#IM
/** 6
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* @author treeroot 9$X" D
* @since 2006-2-2 0$Mxu7 /
* @version 1.0 ;t9_*)[
*/ \oxf_4X
public class InsertSort implements SortUtil.Sort{ A~E S{Zkh
*!`&+w
/* (non-Javadoc) X{!,j}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R'B_YKHBY
*/ J7{D6@yLS
public void sort(int[] data) { o+}1M
int temp; X~o;jJC
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'NjeF6
} &DYC3*)Jih
} '*`n"cC:
} .,S`VNU
k-^^Ao*@
} NF |[j=?
4,QA {v
冒泡排序: $/Q\B(X3
dVLrA`'P*
package org.rut.util.algorithm.support; mz<,nR\
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import org.rut.util.algorithm.SortUtil; y[jp)&N`
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/** >{Mv+
* @author treeroot xgNV0;g,
* @since 2006-2-2 U5cbO{\3I
* @version 1.0 jb/C\2U4)
*/ /\Xe'&
public class BubbleSort implements SortUtil.Sort{ fYZd:3VdC
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/* (non-Javadoc) .sj/Lw}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3''Kg<k,I
*/ d?YSVmG
public void sort(int[] data) { sLTQm*jL
int temp; qycf;Kl:6
for(int i=0;i for(int j=data.length-1;j>i;j--){ vzSjfv
if(data[j] SortUtil.swap(data,j,j-1); Bmt8yR2
} UHfE.mTjM
} &l-d_dh
} ^P [#YO
} +B+cN[d
O<>+l*bk
} .pl,ujv
@*6_Rp"@
选择排序: 8>vNa
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package org.rut.util.algorithm.support; dn=srbJ
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import org.rut.util.algorithm.SortUtil; "k"+qR`fH
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/** n2c(x\DA&
* @author treeroot d= vD Pf
* @since 2006-2-2 v=dN$B5y3
* @version 1.0 q:jv9eL.O
*/ lQ[JA[
public class SelectionSort implements SortUtil.Sort { K'"s9b8
=:R${F
/* dYwEVu6q
* (non-Javadoc) 9~K>c
* $j(4FyH\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X9" T(`
*/ fD_3lbiL(
public void sort(int[] data) { rniL+/-uU
int temp; 8"ZcK xDk
for (int i = 0; i < data.length; i++) { v{1g`E
int lowIndex = i; 4>Q] \\Lc
for (int j = data.length - 1; j > i; j--) { T2|<YJ=
if (data[j] < data[lowIndex]) { $'#}f?
lowIndex = j; :=q9ay
} B<@a&QBTg
} MScUrW!TA
SortUtil.swap(data,i,lowIndex); v33[Rk'
} X^m@*,[s
} 1T,Bd!g
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} EjEXev<]
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Shell排序: <x$fD37
m<MN.R7
package org.rut.util.algorithm.support; _\,4h2(
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import org.rut.util.algorithm.SortUtil; rg%m
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/** FY+@fy
* @author treeroot ^:O*Sx.CA
* @since 2006-2-2 7
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* @version 1.0 W^H[rX}=
*/ lKRp9isn^
public class ShellSort implements SortUtil.Sort{ >Mm.MNU
3] U/^f3
/* (non-Javadoc) aH500
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LzB*d
*/ jM'Fb.>~
public void sort(int[] data) { D2:ShyYAS
for(int i=data.length/2;i>2;i/=2){ k5)IBO
for(int j=0;j insertSort(data,j,i); 3VQmo\li
} oye/tEMG
} d;r,?/C
insertSort(data,0,1); Z\)P|#L$
} yW"}%)
d
_B}QS"A
/** oJ=u
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* @param data diw5h};W
* @param j GL&rT&
* @param i p1ER<_fp
*/ o3OJI_
v&
private void insertSort(int[] data, int start, int inc) { "KY]2v.
int temp; bG)6p05Oa
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <(~geN
} "1ZVuI
} V F"c}
} #Pq6q.UB
t 9.iWIr
} I]d?F:cdX
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快速排序: 34vH+,!u
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package org.rut.util.algorithm.support; 8O*O5
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import org.rut.util.algorithm.SortUtil; \'nE{
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/** .noY[P8i
* @author treeroot )q%DRLD'G
* @since 2006-2-2 @hOY&
* @version 1.0 LFQPysC
*/ DJ NM=v
public class QuickSort implements SortUtil.Sort{ 6rAenK-%
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/* (non-Javadoc) w6k^|."
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mw=keY9]
*/ -.vNb!=
public void sort(int[] data) { -EU~
%/=m+
quickSort(data,0,data.length-1); nyd'79~>G
} LoS%FI
private void quickSort(int[] data,int i,int j){ b=Q%Jxz?
int pivotIndex=(i+j)/2; YccD^w[`B
file://swap T:udw
SortUtil.swap(data,pivotIndex,j); N8]d0
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int k=partition(data,i-1,j,data[j]); u O~MT7~[X
SortUtil.swap(data,k,j); Uw>g^[V;
if((k-i)>1) quickSort(data,i,k-1); E`3[62C
if((j-k)>1) quickSort(data,k+1,j); Z9PG7h
]<E\J+5K
} k5GJrK+
/** eN
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* @param data xTdh/}
* @param i ZCkwK
* @param j !iGZo2LV
* @return 8~h.i1L
*/ ?u M2|Nk
private int partition(int[] data, int l, int r,int pivot) { mv9@Az9
do{ q VJC O-K|
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^G(+sb[t
SortUtil.swap(data,l,r); 2ISnWzq;
} locf6%2g~
while(l SortUtil.swap(data,l,r); e%&/K7I "?
return l; qznd'^[
} ?$X1X`@
6imQjtI
} e_CgZ
y+a]?`2
改进后的快速排序: ;jpsH?3g
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package org.rut.util.algorithm.support; T$9tO{
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import org.rut.util.algorithm.SortUtil; B976{;QvXV
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/** Y[ toN9,
* @author treeroot UPJ3YpK
* @since 2006-2-2 3+$~l5LY
* @version 1.0 5i1Xumh 4
*/ ZZ{:f+=?$
public class ImprovedQuickSort implements SortUtil.Sort { }Z}4_/E
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private static int MAX_STACK_SIZE=4096; aUX.4#|%
private static int THRESHOLD=10; Q>emyij
/* (non-Javadoc) 41jx+
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (Puag*
*/ q~:k[@`.
public void sort(int[] data) { 2_lb+@[W
int[] stack=new int[MAX_STACK_SIZE]; 8!{F6DG
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int top=-1; s@ vHU4
int pivot; Y5Jrkr)k
int pivotIndex,l,r; ns,qj}#
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stack[++top]=0; +\n8##oAI
stack[++top]=data.length-1; ;y"quJ'O
z<c@<M=Q*
while(top>0){ (:]on^|
int j=stack[top--]; }<hyW9
int i=stack[top--]; }?jL;CCe
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pivotIndex=(i+j)/2; {@c)!%2$
pivot=data[pivotIndex]; Oy^)lF/
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SortUtil.swap(data,pivotIndex,j); +84JvOkWi
D> |R.{
file://partition "
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l=i-1; nDvj*lZF
r=j; El$yM.M"
do{ -kVt_
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); MwN.Ll
SortUtil.swap(data,l,r); t_PAXj
} D/1f>sl
while(l SortUtil.swap(data,l,r); ivKhzU+
SortUtil.swap(data,l,j); 6ZCSCBW
dd +%d
if((l-i)>THRESHOLD){ `is."]%f
stack[++top]=i; l H@hV
stack[++top]=l-1; 9K\A4F}
} 4ACL|RF)A
if((j-l)>THRESHOLD){ 4]F:QS%
x
stack[++top]=l+1; O|opNr
stack[++top]=j; f?OFMac
} A3VXh^y+
t<Iy`r71
} QN!$4 1A?{
file://new InsertSort().sort(data); =N5~iMorD-
insertSort(data); J_]B,'
6
} [J'O5"T
/** }i7Gv K<[:
* @param data xU4,R cgo
*/ K/+Y9JP9
private void insertSort(int[] data) { bnb:4?d]
int temp; dvWQ?1l_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OaeGukhX&
} `@$qy&AJ
} =.Tc
l"O[
} [ &cCE
\^$g%a
} dWhki|c
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归并排序:
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package org.rut.util.algorithm.support; 8[zux 4<m
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import org.rut.util.algorithm.SortUtil; ,i>{yrsOh
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/** Qy>n]->%
* @author treeroot @2>A\0U
* @since 2006-2-2 &LRO^[d
* @version 1.0 S?ypka"L
*/ ~J:cod
public class MergeSort implements SortUtil.Sort{ Y8c#"vm(
%r1NRg8
/* (non-Javadoc) UMcQqV+vT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JDTlzu1hR
*/ 4CUzp.S`h
public void sort(int[] data) {
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int[] temp=new int[data.length]; !p&[:+qN
mergeSort(data,temp,0,data.length-1); _"b[UT}m
} 2pKkg>/S
U3R;'80 f
private void mergeSort(int[] data,int[] temp,int l,int r){ M0+xl+c+
int mid=(l+r)/2; g4Y1*`}2f
if(l==r) return ; P2U^%_~
mergeSort(data,temp,l,mid); %rU8^'Gu
mergeSort(data,temp,mid+1,r); xL-]gwq
for(int i=l;i<=r;i++){ >iZ"#1ZL2O
temp=data; d:j65yu
} [;?CO<
int i1=l; Owe"x2D\
int i2=mid+1; UDBMf2F]
for(int cur=l;cur<=r;cur++){ }:04bIaV
if(i1==mid+1) IE^xk@
data[cur]=temp[i2++]; >-%tvrS%
else if(i2>r) "s$$M\)T
data[cur]=temp[i1++]; {WYJQKs8
else if(temp[i1] data[cur]=temp[i1++]; DW@|H
else jN[P$}#b`
data[cur]=temp[i2++]; F'~\!dNL
} No|T#=BZ[
} %<^IAMkp
dH5 Go9`~R
} 4l2/eh]Hc(
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改进后的归并排序: mz[Q]e~&i
{5GXN! f
package org.rut.util.algorithm.support; -:$#koW
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import org.rut.util.algorithm.SortUtil; K:<j=j@51
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/** pXoD*o b
* @author treeroot ktA5]f;
* @since 2006-2-2
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* @version 1.0 d~0k}|>
*/ (dH "b
*
public class ImprovedMergeSort implements SortUtil.Sort { I_dO*k%l
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private static final int THRESHOLD = 10; 51sn+h<w
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/* MWl2;qi
* (non-Javadoc) ><&>JgM
* *eF'<._[U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V_x8
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*/ 3i*HwEh
public void sort(int[] data) { c:d.mkF\
int[] temp=new int[data.length]; e+TSjm
mergeSort(data,temp,0,data.length-1); <n;9IU
} !l(O$T9T
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private void mergeSort(int[] data, int[] temp, int l, int r) { ?LwBF;Y
int i, j, k; H(QbH)S$6
int mid = (l + r) / 2; ^o LMgz
if (l == r) -4;$NiB?
return; vWs#4JoG
if ((mid - l) >= THRESHOLD) {%&!x;%
mergeSort(data, temp, l, mid); 59@PY! c>
else x+Ws lN2a
insertSort(data, l, mid - l + 1); CVAX?c{
if ((r - mid) > THRESHOLD) N 4!18{/2
mergeSort(data, temp, mid + 1, r); Ib&]1ger#=
else +$;#bw)yH
insertSort(data, mid + 1, r - mid); ]4X08Cm^
5qL;@Y
for (i = l; i <= mid; i++) { O{<uW-
temp = data; ~VKuRli|m
} Ux!q(9<_
for (j = 1; j <= r - mid; j++) { <Od5}
temp[r - j + 1] = data[j + mid]; (g*mC7 HN
} y0R9[;b07
int a = temp[l]; * YR>u@
int b = temp[r]; :'$V7LZ5
for (i = l, j = r, k = l; k <= r; k++) { M669G;w(K
if (a < b) { `'vNHY
data[k] = temp[i++]; kM;}$*?
a = temp; hU~up a<dD
} else { 4}r.g0L
data[k] = temp[j--]; 1)BIh~1{p
b = temp[j]; N|3a(mtiZ'
} DUMC4+i
} 1G}\IK1+
} \gW6E^
#trb4c{{5
/** ;uhpo
* @param data .5E6MF
* @param l +v)+ k
* @param i bCg)PJuB
*/ rUW/d3y
private void insertSort(int[] data, int start, int len) { 0PdX>h.t
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g@Z7f y7
} T!2gOe
} 9$WA<1PK+
} #PGpB5vnaA
} (
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堆排序: iGw\A!}w\
p;<aZ&@O
package org.rut.util.algorithm.support; VD90JU]X<
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import org.rut.util.algorithm.SortUtil; /_V4gwb}|-
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/** o<L=l Q
* @author treeroot =kBWY9:$,
* @since 2006-2-2 \Z^Tk
* @version 1.0 *@fVog r^
*/ 1$nuh@-ys
public class HeapSort implements SortUtil.Sort{ ,D93A
BUU ) Sz
/* (non-Javadoc) S<Uv/pn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t}2M8ue(&
*/ S*(ns<L
public void sort(int[] data) {
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'
MaxHeap h=new MaxHeap(); ?#J;[y\^
h.init(data); gacE?bW'
for(int i=0;i h.remove(); 10ZL-7D#m
System.arraycopy(h.queue,1,data,0,data.length); dRXdV7-!
} dk@iAL*v
m8z414o
private static class MaxHeap{ l/6(V:
Yp6%
@c6\
void init(int[] data){ $m0-IyXcv
this.queue=new int[data.length+1]; 2VgVn,c
for(int i=0;i queue[++size]=data; csms8J
fixUp(size); e%v0EJ},
} nCSXvd/
} '-KrneZ!
E@S5|CM
private int size=0; : t6.J
9|&%"~6'
private int[] queue; o3xfif
] KR\<MJK
public int get() { f*GdHUZ*
return queue[1]; ,?>:Cdz4
} e(;nhU3a*,
X?Z#k~JR
public void remove() { .5YIf~!59
SortUtil.swap(queue,1,size--); x2 m
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fixDown(1); qC$h~Epp4
} xN]88L}Tn
file://fixdown zFGZ;?i
private void fixDown(int k) { `DcZpd.n
int j; sXm,y$\m
while ((j = k << 1) <= size) { Tq=OYJq5U
if (j < size %26amp;%26amp; queue[j] j++; <-m?l6
if (queue[k]>queue[j]) file://不用交换 uZ7~E._
break; 0G"I}Jp{
SortUtil.swap(queue,j,k); ]aVFWzey
k = j; mtu`m6Xix
} a]u1_ $)
} /?Fa<{
private void fixUp(int k) { 6=xbi{m$
while (k > 1) { J#tY$PE
int j = k >> 1; U,)@+?U+h
if (queue[j]>queue[k]) ~}F$1;t0
break; JYU0&nZl4
SortUtil.swap(queue,j,k); kqie|_y
k = j; ;\N${YIn
} 6Y(Vs>
} 0(~,U!g[=
3-Xc3A=w
} Ib665H7w
3gzcpFNqX
} v5!G/TZ1
KZ}F1Mr
SortUtil: FD*w4U5
,
,=7deR
package org.rut.util.algorithm; 8C!D=Vhh
-Y"'=zkO
import org.rut.util.algorithm.support.BubbleSort; @(_M\>!%M
import org.rut.util.algorithm.support.HeapSort; fooQqWC)
import org.rut.util.algorithm.support.ImprovedMergeSort; Q-LDFnOFwp
import org.rut.util.algorithm.support.ImprovedQuickSort; muqIh!nn
import org.rut.util.algorithm.support.InsertSort; A(>kp=~
import org.rut.util.algorithm.support.MergeSort; ]jL`*tI\S
import org.rut.util.algorithm.support.QuickSort; 3d0Yq
import org.rut.util.algorithm.support.SelectionSort; (e$/@3*
import org.rut.util.algorithm.support.ShellSort; C/L+:b&x~
p|b&hgA
/** ]C
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* @author treeroot z<rYh96uA
* @since 2006-2-2 mVBF2F<4
* @version 1.0 5c~OG6COx
*/ 1li1&
public class SortUtil { ped3}i+|]
public final static int INSERT = 1; >{dj6Wo
public final static int BUBBLE = 2; #' =rv
public final static int SELECTION = 3; `Oc`I9
public final static int SHELL = 4; L8FLHT+R-
public final static int QUICK = 5; G'>z~I]6S
public final static int IMPROVED_QUICK = 6; !y>MchNv
public final static int MERGE = 7; |# zznT"
public final static int IMPROVED_MERGE = 8; mne=9/sE"
public final static int HEAP = 9; ,DT=(
u/% 4WgA
public static void sort(int[] data) { AF
qut
sort(data, IMPROVED_QUICK); W1UG\d`2
} 3ee?B~Tun
private static String[] name={ Q\DD^Pbq
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" kS$HIOt823
}; *WQ}ucE^#
:z EhPx;B7
private static Sort[] impl=new Sort[]{ +C{ %pF
new InsertSort(), [akyCb
new BubbleSort(), z5CWgN
new SelectionSort(), q?=eD^]
new ShellSort(), a%-P^M;a2
new QuickSort(), Xj\SJ*
new ImprovedQuickSort(), q >9F21 W
new MergeSort(), aeESS;JxJj
new ImprovedMergeSort(), A|BvRZd
new HeapSort() nx(O]R,Sw
}; L}&U%eD
E6-alBi%
public static String toString(int algorithm){ ZU&I`q|Y6
return name[algorithm-1]; ?^F#}>C
} c0Tda
U+!H/R)(
public static void sort(int[] data, int algorithm) { R,hX *yVq
impl[algorithm-1].sort(data); NC 0H5
} 2
AZ[gr@c
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public static interface Sort { nD\X3g`V
public void sort(int[] data); S-8O9
} [`^x;*C
iaR^] |7_
public static void swap(int[] data, int i, int j) { _ "ysJ&
int temp = data; :B=p%C
data = data[j]; urHQb5|T}
data[j] = temp; Zcg=a_
} vXnTPjbE
} ;X u&['