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。 RzEzNV
插入排序: t3;Zx+Br
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package org.rut.util.algorithm.support; J&xZN8jW
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import org.rut.util.algorithm.SortUtil; `/8@Fj
/** Un6R)MVT
* @author treeroot M>AxVL
* @since 2006-2-2 7L!JP:v
* @version 1.0 9d5$cV
*/ T c WCr
public class InsertSort implements SortUtil.Sort{ /DQYlNa
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/* (non-Javadoc) da$FY7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zxyl+tU &
*/ XM$~HG
public void sort(int[] data) { gmGK3am
int temp; $Z]&3VxxY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /R#zu_i
} ">H*InF
} gaF6j!p
} o<G 9t6~
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} /_C2O"h
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冒泡排序: &\h7E
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package org.rut.util.algorithm.support; Ew8@{X
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import org.rut.util.algorithm.SortUtil; ]eL# bJ
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/** ?UXFz'
* @author treeroot ":!$Jnj,
* @since 2006-2-2 +,Eam6g{
* @version 1.0 ZEqW*piI
*/ ]M?i:A$B
public class BubbleSort implements SortUtil.Sort{ ~ ld.I4
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/* (non-Javadoc) 7({)ou x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <kn2
*/ -C=0Pg]ga
public void sort(int[] data) { 78&|^sq
int temp; "5hk%T'
for(int i=0;i for(int j=data.length-1;j>i;j--){ U&^q#['
if(data[j] SortUtil.swap(data,j,j-1); hkMeUxS
} 0m@+ &X>w
} -Jd|H*wWo
} QS#@xhH
} n:@!vV
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} \""^'pP@
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选择排序: UK =ELvt]
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package org.rut.util.algorithm.support; P>/:dt'GJ}
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import org.rut.util.algorithm.SortUtil; Ymut]`dX
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/** 5!c/J:z
* @author treeroot X=)V<2WO
* @since 2006-2-2 bLc5$U$!I
* @version 1.0 CoN[Yf3\
*/ Al$z.i?R
public class SelectionSort implements SortUtil.Sort { oi #B7
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/* (NJ{>@&
* (non-Javadoc) LlTD =tJ0
* EGu%;[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w\buQ6pR)
*/ (.J/Ql0Y
public void sort(int[] data) { MO`Y&<g~A
int temp; T.bFB+'E|
for (int i = 0; i < data.length; i++) { J
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int lowIndex = i; %cF`x_h[j
for (int j = data.length - 1; j > i; j--) { .D*Qu}
if (data[j] < data[lowIndex]) { -^p{J
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lowIndex = j; DE(XSzX
} ]*0zir/
} [|nK5(e9
SortUtil.swap(data,i,lowIndex); E7uIur=g!
} ]c(FgYc
} +R'8$
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Shell排序: 2yN!yIPR
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package org.rut.util.algorithm.support; !0{SVsc)
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import org.rut.util.algorithm.SortUtil; {*xE+ |
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/** o}N@Q-i gq
* @author treeroot LU3pCM{
* @since 2006-2-2 h&"9v~
* @version 1.0 V)$!WPL@
*/ C5 ~#lNC
public class ShellSort implements SortUtil.Sort{ t{k:H4
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/* (non-Javadoc) ff--y8h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h:Pfiw]
*/ ZFZ'&"+
public void sort(int[] data) { K+3-XhG
for(int i=data.length/2;i>2;i/=2){ UP](1lAf
for(int j=0;j insertSort(data,j,i); d4y#n=HnnV
} EC?5GNGT,
} /T _M't@j
insertSort(data,0,1); %i9S"
} ;,{_=n>
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/** @@Ib^sB%
* @param data ?9 huuJs7
* @param j AR |4^
* @param i 91R#/i
*/ YidcV lOsO
private void insertSort(int[] data, int start, int inc) { d`sZ"8}j
int temp; vC]X>P5 Px
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *byUqY3(
} i?T-6{3I
} Q 3WD!Z8y
} cU;Bm}U
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} wNa5qp
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快速排序: L>Y+}]~
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package org.rut.util.algorithm.support; f)sy-o!
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import org.rut.util.algorithm.SortUtil; 1RAkqw<E
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/** 1W|jC
* @author treeroot d1~#@6CIz
* @since 2006-2-2 .@ H:P
* @version 1.0 g->*@%?<w>
*/ Nl\`xl6y]
public class QuickSort implements SortUtil.Sort{ =,XCjiBeC
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/* (non-Javadoc) #`Su3~T=S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eWH0zswG
*/ ~WA@YjQ]
public void sort(int[] data) { tZ]gVgZg
quickSort(data,0,data.length-1); rPk|2l,E,3
} *Y> w0k
private void quickSort(int[] data,int i,int j){ QK_5gD`$a,
int pivotIndex=(i+j)/2; VEps|d3,,
file://swap |\(uO|)ju
SortUtil.swap(data,pivotIndex,j); a`wjZ"}'[
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int k=partition(data,i-1,j,data[j]); p?gm=b#
SortUtil.swap(data,k,j); l7QxngWw
if((k-i)>1) quickSort(data,i,k-1); ~,lt^@a
if((j-k)>1) quickSort(data,k+1,j); ')jItje|
'|H+5#
} h&4s%:_4
/** LL<xygd
* @param data >a8iY|QY
* @param i [8QK @5[
* @param j ;Gr
{
* @return 1I%u)[;>
*/ .fWy\r0
private int partition(int[] data, int l, int r,int pivot) { f:-)S8OJ
do{ sH6;__e
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (.-4Jn
SortUtil.swap(data,l,r); -XYvjW,|
} D07M!U
while(l SortUtil.swap(data,l,r); z:Am1B
return l; ~"+"6zg
} 1EU4/6!C
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} %a/3*vz/I%
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改进后的快速排序: 8lQ}-8
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package org.rut.util.algorithm.support; 217G[YE-
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import org.rut.util.algorithm.SortUtil; x80IS:TP
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/** VR(R.
* @author treeroot |4\1V=(
* @since 2006-2-2 [t4v/vQT
* @version 1.0 sVyV|!K
*/ t:10
public class ImprovedQuickSort implements SortUtil.Sort { KZKE&bTx
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private static int MAX_STACK_SIZE=4096; +bumWOQ'
private static int THRESHOLD=10; }40T'y
/* (non-Javadoc) TOwqr T/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w)dnmrKDZg
*/ uj.i(Us
public void sort(int[] data) { P%|~Ni_BTX
int[] stack=new int[MAX_STACK_SIZE]; 2cCiHEL #
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int top=-1; &%OY"Y~bI!
int pivot; 4c5BlD
int pivotIndex,l,r; %IsodtkDu
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stack[++top]=0; D:T]$<=9
stack[++top]=data.length-1; i{^T;uAE
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while(top>0){ QFP9"FM5F
int j=stack[top--]; H )ej]DXy
int i=stack[top--]; ACyK#5E
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pivotIndex=(i+j)/2; j[U#J
pivot=data[pivotIndex]; wm~7`&
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SortUtil.swap(data,pivotIndex,j); ceUe*}\cr
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file://partition Ge?Wmq>
l=i-1; 4l 67B]o
r=j; x9YQd69
do{ $toTMah
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E+]}KX:
SortUtil.swap(data,l,r); zud_BOq{f
} 8w5}9}xF
while(l SortUtil.swap(data,l,r); X%yG{\6:
SortUtil.swap(data,l,j); ?[JP[
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if((l-i)>THRESHOLD){ /3,/j)`a
stack[++top]=i; wQSan&81Q
stack[++top]=l-1; <- \|>r Q
} ;wwc;wQ'
if((j-l)>THRESHOLD){ ?X@!jB,Pv
stack[++top]=l+1; G80N8Lm
stack[++top]=j; 4)gG_k
} x7S\-<8
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} @j|E"VYY
file://new InsertSort().sort(data); &5 "!0
insertSort(data); U}w'/:H
} .\
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/** =UKxf
* @param data
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*/ vhBW1/w&F
private void insertSort(int[] data) { p}^G#h{
int temp; DhE-g<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b1C)@gl !Z
} gGrVpOzBj
} jrp>Y:
} t]HY@@0g
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} Mq\=pxC@
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归并排序: Cx TAd[az
R,3cJ
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package org.rut.util.algorithm.support; VM$n|[C~
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import org.rut.util.algorithm.SortUtil; Fx^wV^q3
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/** COw"6czX/
* @author treeroot T8+[R2_
* @since 2006-2-2 `G$>T#Dq
* @version 1.0 BA h'H&;V
*/ ei5YxV6I
public class MergeSort implements SortUtil.Sort{ >eTbg"\
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/* (non-Javadoc) >+{WiZ`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qPPe)IM'Sc
*/ =mYf]
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public void sort(int[] data) { xSudDhRP
int[] temp=new int[data.length]; B<d=;V
mergeSort(data,temp,0,data.length-1); LhL |ETrJ
} mG1~rI
U<'N=#A
J
private void mergeSort(int[] data,int[] temp,int l,int r){ TsFhrtnx&X
int mid=(l+r)/2; I# tlaz#
if(l==r) return ; ^5X?WA,Z99
mergeSort(data,temp,l,mid); 1ui)Hv=h*
mergeSort(data,temp,mid+1,r); UBwl2Di
for(int i=l;i<=r;i++){ f./K/
temp=data; ZVXPp-M
} H_?rbz} o
int i1=l; \HO)ss)"
int i2=mid+1; GxhE5f;
for(int cur=l;cur<=r;cur++){ v6 5C
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if(i1==mid+1) 'J?{/O ^
data[cur]=temp[i2++]; k-ZO/yPo
else if(i2>r) ,-6Oma
-
data[cur]=temp[i1++]; >` s"C
else if(temp[i1] data[cur]=temp[i1++]; s&$?m[w
else _}5vO$kdO
data[cur]=temp[i2++]; =f~<*wQ
} aBC5?V*e%
} 4v_Ac;2m&
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} c4AJ`f.5
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改进后的归并排序: ]he~KO[j<
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package org.rut.util.algorithm.support; $UzSPhv[
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import org.rut.util.algorithm.SortUtil; ZS.=GjK
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/** as@8L|i*
* @author treeroot Ur+U#}
* @since 2006-2-2 Ae7FtJO
* @version 1.0 ]zYIblpde
*/ <,:{Q75
public class ImprovedMergeSort implements SortUtil.Sort { X(tx8~z
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private static final int THRESHOLD = 10; [l-o*@
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/* +mrLMbBiD
* (non-Javadoc) 6) i-S<(
* K9@.l~n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) li[[AAWVm
*/ 9Y3"V3EZ
public void sort(int[] data) { '#c#.O
int[] temp=new int[data.length]; .'`aX
7{\
mergeSort(data,temp,0,data.length-1); u.yR oZ8/!
} i`+w.zJOH8
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private void mergeSort(int[] data, int[] temp, int l, int r) { ;87PP7~
int i, j, k; dy+A$)gY<
int mid = (l + r) / 2; {]6-,/3UR
if (l == r) )Ra:s>
return; eQi^d/yi
if ((mid - l) >= THRESHOLD) 45 ^ Z5t
mergeSort(data, temp, l, mid); gs1yWnSv5
else A
l;a~45
insertSort(data, l, mid - l + 1); R([zlw~B5
if ((r - mid) > THRESHOLD) /%cDX:7X
mergeSort(data, temp, mid + 1, r); *Hx*s_F
else rfonM~3?'
insertSort(data, mid + 1, r - mid); #H7
SLQr\
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for (i = l; i <= mid; i++) { e\X[\ve
temp = data; /rpr_Xw}
} ^1 ){
@(
for (j = 1; j <= r - mid; j++) { 6
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temp[r - j + 1] = data[j + mid]; hr]+4!/
} Vja 4WK*
int a = temp[l]; waMV6w)<
int b = temp[r]; i1x4$}
for (i = l, j = r, k = l; k <= r; k++) { *w;?&)8%
if (a < b) { S
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data[k] = temp[i++]; f2c<-}wR
a = temp; .QP`Qn6 (P
} else { fBh"
data[k] = temp[j--]; X QLP|v;"
b = temp[j]; U LS>v
} B!mHO*g
} 3PkZXeH/
} fYuSfB+<
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/** c(1tOQk.
* @param data 7KiraKb|
* @param l N/F_,>E
* @param i R'Ue>k
*/ xp1/@Pw?
private void insertSort(int[] data, int start, int len) { KGDN)@D
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (LsVd2AbR
} S$SCW<LuN
} /\Nc6Z/ L
} FV9{u[3m
} X[Iy6qt
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堆排序: gH7 +#/
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package org.rut.util.algorithm.support; SOG(&)b
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import org.rut.util.algorithm.SortUtil; Zsapu1HoL\
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/** k% \;$u=%
* @author treeroot :sw5@JdJ
* @since 2006-2-2 D?y-Y
* @version 1.0 '?$@hqQn
*/ &M5v EPR
public class HeapSort implements SortUtil.Sort{ GTB\95j]
}],l m
/* (non-Javadoc) &wU"6E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (!@gm)#h
*/ >3g`6d
public void sort(int[] data) { ]N}/L
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MaxHeap h=new MaxHeap(); R<1%Gdz
h.init(data); \V 'fB5
for(int i=0;i h.remove(); .feB
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System.arraycopy(h.queue,1,data,0,data.length); ;m]
n l_vg
} W2h*t"5W
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private static class MaxHeap{ PO5,lcBD<
#O_%!7M{4
void init(int[] data){ M5RN Z%
this.queue=new int[data.length+1]; M
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for(int i=0;i queue[++size]=data; ta.Lq8/
fixUp(size); KiG19R$
} CV
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} %wl:>9]
v9J1Hha#
private int size=0; w!*ZS~v/r
m~;.kc
private int[] queue; U$DZht4>u
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public int get() { aVHID{Gf Z
return queue[1]; +uF}mZS^
} B!<B7Q
|{|B70v3Co
public void remove() { R7b-/
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SortUtil.swap(queue,1,size--); OE[7fDe'
fixDown(1); 5X3JQ"z
} tHaHBx1P
file://fixdown bkR~>F]FAu
private void fixDown(int k) { 0-OKbw5%=b
int j; CC@U'9]bH
while ((j = k << 1) <= size) { &b~X&{3,
if (j < size %26amp;%26amp; queue[j] j++; cb'Ya_
if (queue[k]>queue[j]) file://不用交换 s8:epcL`A
break; Msvs98LvW
SortUtil.swap(queue,j,k); ai/]E6r
k = j; i+QVs_jW
} 'N6oXE
} 7gLk~*
private void fixUp(int k) { vC&0UNe$
while (k > 1) { 1r4NP
int j = k >> 1; **-rPonM[
if (queue[j]>queue[k]) UazK0{t<f
break; RJ3uu NK7
SortUtil.swap(queue,j,k); 8|=
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k = j; =KO]w9+\
} @fA|y
} `B&