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。 7i,}F|#8
插入排序: \-gZ_>)
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package org.rut.util.algorithm.support; L@XhgQ
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import org.rut.util.algorithm.SortUtil; (pNA8i%=G
/** =EgiV<6vcH
* @author treeroot C|8.$s<
* @since 2006-2-2 "8>*O;xk
* @version 1.0 Ns?y)
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*/ H"6Sj-<=
public class InsertSort implements SortUtil.Sort{ w-pdpbHV
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +v{<<
*/ @;!s"!~sv
public void sort(int[] data) { $d'GCzYvZ
int temp; g`k_o<'JC
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 43^%f-J5
} E80C0Q+V
} HI*xk
} s8Xort&
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} :%~+&qS
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冒泡排序: a39Kl_\
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package org.rut.util.algorithm.support; O|}97a^
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import org.rut.util.algorithm.SortUtil; Tl6%z9rY@
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/** )<nr;n
* @author treeroot !c(B c^
* @since 2006-2-2 89?$xm _m
* @version 1.0 *+{umfZy
*/ aOFF"(]Cl
public class BubbleSort implements SortUtil.Sort{ |t5K!?{i
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/* (non-Javadoc) R-+k>_96|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HZ* <BjE:"
*/ VQI
public void sort(int[] data) { 9
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int temp; GcmN40
for(int i=0;i for(int j=data.length-1;j>i;j--){ l_Mi'}j
if(data[j] SortUtil.swap(data,j,j-1); ' !>t( Sa
} L}7c{6!F7
} N&n2\Y
} n.Iu|,?q
} icLf;@
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} * _ {w0U)
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选择排序: )o-rg
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package org.rut.util.algorithm.support; ~_OtbNj#
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import org.rut.util.algorithm.SortUtil; !)FM/Xj,o
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/** }@>=,A4Y
* @author treeroot 7vax[,aI
* @since 2006-2-2 t`1E4$Bb\
* @version 1.0 G'T/I\tB
*/ u|t<f`ze
public class SelectionSort implements SortUtil.Sort { F$T@OT6
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/* 1'@/jR
* (non-Javadoc) tEh YQZ
* Au(zvgP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8(J&_7u
*/ 8T6.Zhv
public void sort(int[] data) { bR"hl? &c
int temp; p}_n
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for (int i = 0; i < data.length; i++) { U2l7@uDr;
int lowIndex = i; "$#X[.
for (int j = data.length - 1; j > i; j--) { `&xo;Vnc
if (data[j] < data[lowIndex]) { vs}_1o
lowIndex = j; B/u0^!
} 2YI#J.6]H
} r*CI6yP
SortUtil.swap(data,i,lowIndex); {eo4J&as
} N'[bA
} -F\xZ
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} IMjz#|c
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Shell排序: QwPLy O
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package org.rut.util.algorithm.support; DdJ>1504
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import org.rut.util.algorithm.SortUtil; ocOzQ13@Y
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/** /cM<
* @author treeroot H=b54.J8&
* @since 2006-2-2 e}>8rnR{
* @version 1.0 m!{Xu y
*/ M5DQ{d<r
public class ShellSort implements SortUtil.Sort{ mkH{%7n
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/* (non-Javadoc) l+g\xUP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A<-Prvryt
*/ 5=]q+&y\H
public void sort(int[] data) { r#ES|
for(int i=data.length/2;i>2;i/=2){ xDv5'IGBb
for(int j=0;j insertSort(data,j,i); 6M^P]l
} baJ(Iy$XT
} T;!7GW4E
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insertSort(data,0,1); tg%s#lLeH
} >;a_i>[
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/** =xzDpn>f
* @param data d67Q@')00
* @param j ]XX9.Xh=-
* @param i 6~g`B<(?
*/ ti6\~SY
private void insertSort(int[] data, int start, int inc) { v[4A_WjT
int temp; $qOV#,@
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |Yq0zc!
} C/AqAW1
} uLFnuK
} rz/^_dV
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} %@JNX}Y'
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快速排序: ukM11LD5x
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package org.rut.util.algorithm.support; 5m2`$y-nb
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import org.rut.util.algorithm.SortUtil; [>+}2-#
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/** ' *h y!f]
* @author treeroot i"|="O0v5
* @since 2006-2-2 L%4[,Rsw
* @version 1.0 P%HvL4R
*/ Oa7x(wS
public class QuickSort implements SortUtil.Sort{ Ut"~I)S{LT
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/* (non-Javadoc) :5 XNV6^|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v4_p3&aj
*/ +bC-_xGuh
public void sort(int[] data) { %{GYTc \'X
quickSort(data,0,data.length-1); |M&i#g<A;
} qm30,$\c`~
private void quickSort(int[] data,int i,int j){ `>M;f%s
int pivotIndex=(i+j)/2; c6zghP3dR
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SortUtil.swap(data,pivotIndex,j); ERSo&8
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int k=partition(data,i-1,j,data[j]); 88c-K{}3
SortUtil.swap(data,k,j); 2de[ yz
if((k-i)>1) quickSort(data,i,k-1); /58]{MfrJ
if((j-k)>1) quickSort(data,k+1,j); q:Lw!'Zh
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} }~gBnq_DDU
/** )Rhy^<xH
* @param data E+XpgR5
* @param i `LD#fg*
* @param j 8S;]]*cD~
* @return ;O8Uc&:P
*/ P_:A%T
private int partition(int[] data, int l, int r,int pivot) { l!Bc0
do{ :=J~t@
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); aDJ\%
SortUtil.swap(data,l,r); lgR;V]^YX
} }` &an$Mu
while(l SortUtil.swap(data,l,r); Yt^<^l77D
return l; ym*,X@Qg^
} L`"PaIMz
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} "zU}]|R
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改进后的快速排序: ?_S f
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package org.rut.util.algorithm.support; %<^B\|d'?
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import org.rut.util.algorithm.SortUtil; p7.j>w1F
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/** f-at@C1L%L
* @author treeroot 8Lm}x_
* @since 2006-2-2 8
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* @version 1.0 OyTE d5\3
*/ lZyxJDZ A
public class ImprovedQuickSort implements SortUtil.Sort { *.g0;\HF
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private static int MAX_STACK_SIZE=4096; y\}39Z(]
private static int THRESHOLD=10; UzLe#3MU
/* (non-Javadoc) hAHZN^x&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X^L)5n+$X
*/ \U^0E> d
public void sort(int[] data) { fC!]M hA"i
int[] stack=new int[MAX_STACK_SIZE]; 1$cX`D`
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int top=-1; RI,Z&kXj2o
int pivot; u_0&`zq
int pivotIndex,l,r; ppv/A4Kv
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stack[++top]=0; OKDBzl
stack[++top]=data.length-1; Vq7L:,N9
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while(top>0){ ~N</;{}fL4
int j=stack[top--]; L%D:gy9o
int i=stack[top--]; eBZ^YY<*g
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pivotIndex=(i+j)/2; m%8idjnG
pivot=data[pivotIndex]; -#yLH
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SortUtil.swap(data,pivotIndex,j); vfW
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file://partition o)NQE?
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r=j; -49z.(@ki
do{ d1=kHU4_9
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =F>@z4[P-
SortUtil.swap(data,l,r); MGUzvSf
} 7
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while(l SortUtil.swap(data,l,r); +-=o16*{ !
SortUtil.swap(data,l,j); NL})_.Og
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if((l-i)>THRESHOLD){ d',OQ,~{
stack[++top]=i; 9v7l@2/
stack[++top]=l-1; qPgLSZv
} 76i)m!
if((j-l)>THRESHOLD){ Nr.maucny
stack[++top]=l+1; 3EGQ$
stack[++top]=j;
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} I`%\ "bF@
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} R#ayN*
file://new InsertSort().sort(data); 8=
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insertSort(data); e=b>:n
}
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/** W}6(; tI
* @param data _sU| <1
*/ zh2gU@"
private void insertSort(int[] data) { R(dVE\u
int temp; sS$"6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w#v8a$tT
} Z
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} Wb! "L`m
} 79:Wo>C3-
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} p1B~:9y9X
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归并排序: k(n{$
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package org.rut.util.algorithm.support; G\8ps~3T
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import org.rut.util.algorithm.SortUtil; d/>owCwQ
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/** (;1FhIi&
* @author treeroot !mFx= +
* @since 2006-2-2 imcq
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* @version 1.0 v?b9TE
*/ hQ!sl O
public class MergeSort implements SortUtil.Sort{ ~RSOUrR
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/* (non-Javadoc) K9v@L6pY=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %U]_1"d,<\
*/ ]d#Lfgo
public void sort(int[] data) { 3`@alhD'
int[] temp=new int[data.length]; Vl;GQe
mergeSort(data,temp,0,data.length-1); w9D<^(_}/
} vywd&7gK
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private void mergeSort(int[] data,int[] temp,int l,int r){ \VL[,z=q.
int mid=(l+r)/2; %-? :'F!1
if(l==r) return ; l?CUd7P(a
mergeSort(data,temp,l,mid); G{*m] 0Q
mergeSort(data,temp,mid+1,r); bH}6N>Fp
for(int i=l;i<=r;i++){ MS{purD
temp=data; FC.d]XA%/d
} ` aTkIo:ms
int i1=l; ]^,<Ez
int i2=mid+1; @=o1q=5@8
for(int cur=l;cur<=r;cur++){ Q9X7-\n
if(i1==mid+1) bSmF"H0cP
data[cur]=temp[i2++]; ,: X+NQ
else if(i2>r) /{pVYY
data[cur]=temp[i1++]; eto3dJ!R
else if(temp[i1] data[cur]=temp[i1++]; 9g3J{pKcZ
else ~YO-GX(
data[cur]=temp[i2++]; /60`"xH
} X+;F5b9z
} HA%%WSuf
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} y=y=W5#;77
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改进后的归并排序: *ayn<Vlh`^
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package org.rut.util.algorithm.support; k8^!5n
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import org.rut.util.algorithm.SortUtil; aaq{9Y#
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/** '| Enc"U
* @author treeroot <VD^f
* @since 2006-2-2 ?qr-t+
* @version 1.0 }J}a;P4
*/ c-z2[a8
public class ImprovedMergeSort implements SortUtil.Sort { qJ QE|VM&
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private static final int THRESHOLD = 10; &wR