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。 ?L7z\b"_~
插入排序: P PmE.%_
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package org.rut.util.algorithm.support; _d,_&7
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import org.rut.util.algorithm.SortUtil; "-\I?k
/** hoPCbjkov
* @author treeroot 2}hEBw68
* @since 2006-2-2 HjL+Wg
* @version 1.0 .hn"NXy
*/ \vpUl
public class InsertSort implements SortUtil.Sort{ (LQ*U3J]_
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/* (non-Javadoc) &Q 3!ty
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F DXAe-|Q
*/ 0(HUy`]>
public void sort(int[] data) { 0riTav8
int temp; _sx]`3/86
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $Z$BF
} kOeW,:&65
} EtKy?]i
} M/ >^_zG
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} MT}9T
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冒泡排序: s}X2*o`,
05$CIS>!
package org.rut.util.algorithm.support; zGA1
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import org.rut.util.algorithm.SortUtil; #sN]6
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/** >pUR>?t"
* @author treeroot CKy' 8I9
* @since 2006-2-2 8)/d8@
* @version 1.0 FL9Dz4
*/ O_*%_S}F&
public class BubbleSort implements SortUtil.Sort{ 3Vs8"BFjz
0.=dOz r
/* (non-Javadoc) M;-PrJdyt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g-Vxl|hR
*/ 4Zo.c*
BZ
public void sort(int[] data) { PsaKzAg?
int temp; ,F!zZNW9
for(int i=0;i for(int j=data.length-1;j>i;j--){ Z<@0~t_:?p
if(data[j] SortUtil.swap(data,j,j-1); J>TNyVaoQ
} l|j
} /R!:l l2
} Jx!#y A;
} YZMSiDv[e
xG/B$DLn
} :Ugf3%sQ
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选择排序: X @RS
/
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package org.rut.util.algorithm.support; ,K
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import org.rut.util.algorithm.SortUtil; kNR -eG
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/** ~}pc&jz>q
* @author treeroot _Dr9 w&;<
* @since 2006-2-2 8BE] A_X
* @version 1.0 L7;8:^ v
*/ m}hEi
public class SelectionSort implements SortUtil.Sort { C3)*Mn3%P
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/* [MhKR }a
* (non-Javadoc) +saXN6
* ]l>LU2 sx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %PM&`c98z7
*/ {bHUZen
public void sort(int[] data) { !K*(# [
int temp; ,sI<AFI
for (int i = 0; i < data.length; i++) { x{4{.s%+:
int lowIndex = i; Bs)'Gk`1
for (int j = data.length - 1; j > i; j--) { 0Un?[O
if (data[j] < data[lowIndex]) { 0$JH5RC
lowIndex = j; 4P jC[A*
} lonV_Xx
} |W_;L6)
SortUtil.swap(data,i,lowIndex); ,.9k)\/V
} BX\/Am11
} s|IY
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} ,_iq$I;
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Shell排序: !6!Gx:
cX7 O*5C
package org.rut.util.algorithm.support; }D># AFs6#
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import org.rut.util.algorithm.SortUtil; *:bexD H
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/** s@Dln
Du.
* @author treeroot L"bZ~'y
* @since 2006-2-2 >3ax `8
* @version 1.0 V6Mt;e)C
*/ i/j53towe
public class ShellSort implements SortUtil.Sort{ 0civXZgj
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/* (non-Javadoc) L4,b ThSG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HS[($
*/ Q2/65$nW
public void sort(int[] data) { /sfJ:KP0
for(int i=data.length/2;i>2;i/=2){ ])}a^]0q
for(int j=0;j insertSort(data,j,i); m??Py"1y
} G %'xEr0n
} L!>nl4O>`
insertSort(data,0,1); m _cRK}>
} 28k=@k^q
CP~mKmMV
/** &&nbdu
* @param data Ve2{;`t
* @param j jp_|pC'
* @param i =Ox}WrU~
*/ #x;,RPw5
private void insertSort(int[] data, int start, int inc) { />Q}0Hg
int temp; \yl|*h3
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @-}*cQ4u?
} {j=`
} fuzB;Ea
} P q$0ih
;$WHTO(
} nl
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快速排序: g5
T
0z'GN#mT5
package org.rut.util.algorithm.support; S=(<m%f
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import org.rut.util.algorithm.SortUtil; h);^4cU
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/** y~fKLIoz"
* @author treeroot y{S8?$dU$:
* @since 2006-2-2 d2V X\
* @version 1.0 y(o)}m*0
*/ p}^5ru
public class QuickSort implements SortUtil.Sort{ RFMPh<Ac
3V<@Vkf5
/* (non-Javadoc) .4p3~r?=S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AH|gI2
*/ s'h;a5Q1'Q
public void sort(int[] data) { =hkYQq`Q
quickSort(data,0,data.length-1); } vmRm*8z
} |RFBhB/u
private void quickSort(int[] data,int i,int j){ ;eN
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int pivotIndex=(i+j)/2; &W,jR|B
file://swap yEq7ueJ'
SortUtil.swap(data,pivotIndex,j); K#YQB3rX
.^?zdW
int k=partition(data,i-1,j,data[j]); $P=C7;
SortUtil.swap(data,k,j); R|C2O[r}
if((k-i)>1) quickSort(data,i,k-1); U}LW8886
if((j-k)>1) quickSort(data,k+1,j); =eDIvNps
=j62tDS
} _p^"l2%D/
/** d=/0A\O
* @param data J0?kEr
* @param i |M7cB$y
* @param j qx t0Jr8
* @return X_]rtG
*/ BH">#&j[
private int partition(int[] data, int l, int r,int pivot) { O2?C *
do{ |'q%9#
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >#w;67he2
SortUtil.swap(data,l,r); ZEAUoC1E1
} SVZocTt
while(l SortUtil.swap(data,l,r); v1TFzcHl<
return l; Ho>Np&
} xWxc1tT`
9 3>4n\
} Qc; kj
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改进后的快速排序: gcU*rml
r3W3;L
package org.rut.util.algorithm.support; 4f([EV[6dK
lH}KFFbp
import org.rut.util.algorithm.SortUtil; c-sjYJXKM*
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/** d9K8[Q5^3
* @author treeroot `gX@b^
* @since 2006-2-2 .UG`pRC
* @version 1.0 ?13qDD:
*/ `#N/]4(j
public class ImprovedQuickSort implements SortUtil.Sort { |_V(^b}
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m
private static int MAX_STACK_SIZE=4096; y0%1YY
private static int THRESHOLD=10; q` q;og
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/* (non-Javadoc) rO'DT{Yt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5~L]zE
*/ 9
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public void sort(int[] data) { |A%9c.DG.
int[] stack=new int[MAX_STACK_SIZE];
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j]Jgz<
int top=-1; FACw;/rW
int pivot; Y@Uk P+{f=
int pivotIndex,l,r; j3gDGw;
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stack[++top]=0; vADiW~^Q^
stack[++top]=data.length-1; #c^V%
*m~-8_ >;
while(top>0){ +$h
int j=stack[top--]; [_,as
int i=stack[top--]; *doNPp)m
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pivotIndex=(i+j)/2; e$# *t
pivot=data[pivotIndex]; |A8@r&
5(3O/C{?~
SortUtil.swap(data,pivotIndex,j); "& ,ov#
IS2cU'
file://partition CSO'``16
l=i-1; &{}Mds
r=j; (W
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do{ ZK5nN9`
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); S+ kq1R
SortUtil.swap(data,l,r); Qp>leEs]+6
} CU'JvVe3
while(l SortUtil.swap(data,l,r); l~c[} wv
SortUtil.swap(data,l,j); Zxa.x?:?n
t`Kbm''d[
if((l-i)>THRESHOLD){ [#PE'i4
stack[++top]=i; eb62(:=N6
stack[++top]=l-1; Zf'*pp T&q
} g.lTNQm$u
if((j-l)>THRESHOLD){ p3I"LY
stack[++top]=l+1; 3JCo!n0
stack[++top]=j; ]&cnc8tC
} :xd;=;q5
. %RM8
} b)LT[>f
file://new InsertSort().sort(data); f7Gn$E|/r;
insertSort(data); d1b]+A G4
} ;cor\R
/** JMb_00r
* @param data oQ$yr^M
*/ p0+^wXi)
private void insertSort(int[] data) { bSB%hFp=Cp
int temp; SmRlZ!%e
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4,9$udiGY
} 6Sr]<I +:
} fab'\|Y
} 3H,E8>Vd
jvzioFCt
} W(, j2pU
3/G^V'Yu
归并排序: 34@ [ZKJ5
]<;,HGO
package org.rut.util.algorithm.support; );5o13h2
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import org.rut.util.algorithm.SortUtil; ~>2uRjvkwB
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/** ]v+<K63@T
* @author treeroot U7r8FL l
* @since 2006-2-2 nbi7rcT
* @version 1.0 {o=?@ $6C
*/ B`*,L\LZ*
public class MergeSort implements SortUtil.Sort{ | f#wbw
+vBi7#&
/* (non-Javadoc) Y
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q;M\fBQO}&
*/ \Wbmmd}8
public void sort(int[] data) { TT$Ao
int[] temp=new int[data.length]; ys[Li.s:
mergeSort(data,temp,0,data.length-1); }F`|_8L*v)
} R.~[$G!
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private void mergeSort(int[] data,int[] temp,int l,int r){ 9!FX*}dC
int mid=(l+r)/2; !jCgTo
y
if(l==r) return ; )vp0X\3q`
mergeSort(data,temp,l,mid);
v+c>iI
mergeSort(data,temp,mid+1,r); d2k-MZuT6
for(int i=l;i<=r;i++){ %uW=kr
temp=data; gP^2GnjHL8
} Dg&84,bv^
int i1=l; #6`5-5Ks;
int i2=mid+1; P3M$&::D-
for(int cur=l;cur<=r;cur++){ 6{Wo5O{!\
if(i1==mid+1) f:c'j`
data[cur]=temp[i2++]; aSL`yuXu
else if(i2>r) 1+l 8%G=hB
data[cur]=temp[i1++]; rIyH/=;
else if(temp[i1] data[cur]=temp[i1++]; Hbm 4oYN
else _;lw,;ftA
data[cur]=temp[i2++]; $( hT{C,K
} $] 6u#5
} lj4Fg*/Yn
Zt=|q$"
} Q&9yrx.
)uPJ?
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改进后的归并排序: S-Uod y
NBikYxa
package org.rut.util.algorithm.support; .~z'm$s1o
9shfy4?k
import org.rut.util.algorithm.SortUtil; gI+8J.AG=
FG? Mc'r&
/** fi+}hGj(r
* @author treeroot . [|UNg
* @since 2006-2-2 0|3I^b
* @version 1.0 &|yLTx
*/ IwYeKN6s
public class ImprovedMergeSort implements SortUtil.Sort { {#,<)wFV\
}^"6 :;,
private static final int THRESHOLD = 10; .;#T<S"
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/* c-Lz luWi
* (non-Javadoc) d2\!tJm
* Ni$'#
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Epzg|L1)
*/ fFQ|dE;cF
public void sort(int[] data) { TlG>)Z@/
int[] temp=new int[data.length]; b#j:)PA0C
mergeSort(data,temp,0,data.length-1); 2HbnE&
} Di9RRHn&q
"c^! LV
private void mergeSort(int[] data, int[] temp, int l, int r) { nt.LiM/L
int i, j, k; QX,$JM3
int mid = (l + r) / 2; kZ]H[\Fs
if (l == r) GP:<h@:798
return; =BJLj0=N
if ((mid - l) >= THRESHOLD) %sa?/pjK
mergeSort(data, temp, l, mid); j"W>fC/u
else +UzQJt/>>
insertSort(data, l, mid - l + 1); W4^L_p>Tm^
if ((r - mid) > THRESHOLD) 6FS%9.Ws
mergeSort(data, temp, mid + 1, r); kY0HP a
else $|4@Zx4vf
insertSort(data, mid + 1, r - mid); [W[{
4 Xu
bS_#3T
for (i = l; i <= mid; i++) { ~.a"jYb7A}
temp = data; (vXr2Z<l
} Sp`l>BL
for (j = 1; j <= r - mid; j++) { FO{=^I5YA
temp[r - j + 1] = data[j + mid]; 1 ZdB6U0
} %6K7uvTq
int a = temp[l]; $l.*;h *
int b = temp[r]; qwTz7r
for (i = l, j = r, k = l; k <= r; k++) { r]B8\5|<d
if (a < b) { 2y[Q
data[k] = temp[i++]; 0G%9
@^B
a = temp; s!6lZ mPM
} else { n#_B4UqW%
data[k] = temp[j--]; u{1R=ML
b = temp[j]; "ra$x2|=}
} 9QZaa(vN
} lu utyK!
} qF)J#$4;6
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/**
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* @param data pEyZH!W
* @param l I&PJ[U#~a
* @param i )f8>kz(
*/ h]7_
N,
private void insertSort(int[] data, int start, int len) { y\Wn:RR1 [
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2+]5}'M
} ,EqQU|
} *v<f#hB"
} kk4 |4
} #G9
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sz7*x{E
堆排序: kc'$4 J4Tw
%VHy?!/
package org.rut.util.algorithm.support; (leX` SN0u
Iix,}kzss
import org.rut.util.algorithm.SortUtil; r&=ulg
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/** ct+F\:e
* @author treeroot $QbJT`,mr
* @since 2006-2-2 W'G|sk
* @version 1.0 d_[H|H9i6
*/ 1(' wg!
public class HeapSort implements SortUtil.Sort{ `Fqth^RK?p
G':3U
/* (non-Javadoc) 5Ds[?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [@$ SLl^Y
*/ ]:%DDlRb
public void sort(int[] data) { ?G{0{c2
MaxHeap h=new MaxHeap(); q~`hn(S
h.init(data); 2mY!gVi
for(int i=0;i h.remove(); <^S\&v1C_
System.arraycopy(h.queue,1,data,0,data.length); Bc>j5^)8w
} y6 (L=$+B
4[ uqsJB
private static class MaxHeap{
e=]SIR()`
|mT%IR
void init(int[] data){ =4TQ*;V:
this.queue=new int[data.length+1]; hY}Q|-|
for(int i=0;i queue[++size]=data; M1jT+
fixUp(size); kD#T_d
} VoCg,gow
} 'h$:~C
&X4anH>O
private int size=0; @52#ZWy
w4
yrAj
2
private int[] queue; S2X@t>u-
cXXZ'y>FP
public int get() {
-"-.Z
return queue[1]; ,fjY|ip
} Va!G4_OT
^[hAj>7_8$
public void remove() { =OufafZb
SortUtil.swap(queue,1,size--); Iv6 lE:)
fixDown(1); FDoPW~+[
} U~
X
file://fixdown . _+cvXy
private void fixDown(int k) { DJGafX^
int j; 9.)z]Gav
while ((j = k << 1) <= size) { !vX4_!%
if (j < size %26amp;%26amp; queue[j] j++; ~EtGR #
N
if (queue[k]>queue[j]) file://不用交换 v^A+LZ*d
break; QQ?t^ptv
SortUtil.swap(queue,j,k); Y9BQLu4F
k = j; 8W3zrnc
} 5OM#_.p
} le*+(aw
private void fixUp(int k) { :N8n6)#1=
while (k > 1) { d` GN!^
int j = k >> 1; <B@NSj
if (queue[j]>queue[k]) F .S^KK
break; F:/x7]7??Z
SortUtil.swap(queue,j,k); ?NBae\6r
k = j; !7t&d
} bQD8#Ml1
} zw#n85=
=r]l"T
} Xg~9<BGsi
stiF`l
} 81nD:]7
)\])?q61
SortUtil: j_C"O,WS
Nu qmp7C
package org.rut.util.algorithm; eA N{BPN[
c0wLc,)G
import org.rut.util.algorithm.support.BubbleSort; !'_7MM
import org.rut.util.algorithm.support.HeapSort; !B`z|#
import org.rut.util.algorithm.support.ImprovedMergeSort; F{mUxo#T
import org.rut.util.algorithm.support.ImprovedQuickSort; 8#!g;`~ D
import org.rut.util.algorithm.support.InsertSort; A%#M#hD/
import org.rut.util.algorithm.support.MergeSort; sOqFEvzo1%
import org.rut.util.algorithm.support.QuickSort; ^i@anbH
import org.rut.util.algorithm.support.SelectionSort; S(@kdL
import org.rut.util.algorithm.support.ShellSort; =
#-zK:4
Y"
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/** 97Dq;
* @author treeroot *VsGa<V
* @since 2006-2-2 ,X!) z Amm
* @version 1.0 aiPm.h>
*/ YCRE- 5!
public class SortUtil { y`9#zYgqA
public final static int INSERT = 1; zS:2?VXxq
public final static int BUBBLE = 2; ]9_gbQ
public final static int SELECTION = 3; eipg,EI
public final static int SHELL = 4; +-tFg XG
public final static int QUICK = 5; pW+uVv,
public final static int IMPROVED_QUICK = 6; { <Gyjq
public final static int MERGE = 7; ;PaU"z+Je~
public final static int IMPROVED_MERGE = 8; D%+yp
public final static int HEAP = 9; FS}b9sQ)
}etdXO_^
public static void sort(int[] data) { +iQ@J+k
sort(data, IMPROVED_QUICK); k, N{
} F]M-r{
private static String[] name={ t]I9[5Pq\
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" kq X=3Zo
}; *zUK3&n~I
?OW!D?
private static Sort[] impl=new Sort[]{ g} !{_z
new InsertSort(), \me5"ZU
new BubbleSort(), -]wEk%j
new SelectionSort(), )l9KDObis
new ShellSort(), ECt<\h7}
new QuickSort(), OPN\{<`*d
new ImprovedQuickSort(), kNK0KL
new MergeSort(), =F|9ac9X
new ImprovedMergeSort(), 5Pf=Uj6D
new HeapSort() o2dO\$'
}; 7;+G)44
Hc\C0V<
public static String toString(int algorithm){ UYxn?W.g
return name[algorithm-1]; SY|K9$M^
} z&QfZs
o/3.U=px~
public static void sort(int[] data, int algorithm) { [.4{s
impl[algorithm-1].sort(data); e1g3a1tnWl
} /4O))}TX
fY^CIb$Y
public static interface Sort { M(L6PyEa!Y
public void sort(int[] data); #
bHkI~
}
!p$p 7
_<RTes
public static void swap(int[] data, int i, int j) { #OPEYJ;*9d
int temp = data; WzstO}?P(
data = data[j]; p-IJ':W
data[j] = temp; dwk%!%
} tC|?Kl7
} i.'"`pn_