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。 '}`|QJ
插入排序: 1lxsj{>U
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package org.rut.util.algorithm.support; GQNs :oRJ'
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import org.rut.util.algorithm.SortUtil; m]1=o7
/** S<hj6A
* @author treeroot rb/m;8v>
* @since 2006-2-2 ]m#.MZe
* @version 1.0 4)o_gm~6c4
*/ :?Xd&u0){
public class InsertSort implements SortUtil.Sort{ Al^n&Aa+\
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/* (non-Javadoc) \~(ww3e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H?dmNwkPY
*/ PgKA>50a
public void sort(int[] data) { 6~
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int temp; Wp0e?bK_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z=ayVsJ3
} 5aF03+ko
} ,1\nd{
} `Z3Qx~fx
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} hrwQh2sm
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冒泡排序: ZWC-<QO"<
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package org.rut.util.algorithm.support; ^lqcF.
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import org.rut.util.algorithm.SortUtil; TK )Kq
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/** >uok\sX
* @author treeroot OIF0X!
* @since 2006-2-2 hcw)qB,s
* @version 1.0 KzQ\A!qG
*/ _YXk,ME!Q
public class BubbleSort implements SortUtil.Sort{ 6]i"lqb
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/* (non-Javadoc) Hev S}L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &%~2Wm
*/ {iP^51fy
public void sort(int[] data) { Lm kv.XF
int temp; RVFQ!0
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for(int i=0;i for(int j=data.length-1;j>i;j--){ `laaT5G\y
if(data[j] SortUtil.swap(data,j,j-1); <a-I-~
} or_x0Q
} XE_|H1&j
} tHSe>*eC
} ,3G8afo
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} `;7^@ k
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选择排序: (k9{&mPJ
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package org.rut.util.algorithm.support; 6#xP[hlR[
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import org.rut.util.algorithm.SortUtil; 0`=#1u8
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/**
* P_
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* @author treeroot DLYk#d: q?
* @since 2006-2-2 NymS8hxR
* @version 1.0 =J0X{Ovn4z
*/ )bZS0f-
public class SelectionSort implements SortUtil.Sort { ^CUeq"GYoZ
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/* QN_Zd@K*A
* (non-Javadoc) Zx(VwB2
* 1F*gPhm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8LP L4l
*/ _ x&Y'X|
public void sort(int[] data) { 8(UUc>g
int temp; R07Kure
for (int i = 0; i < data.length; i++) { w/r
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int lowIndex = i; '>AOJaA
for (int j = data.length - 1; j > i; j--) { |3f?1:"Z
if (data[j] < data[lowIndex]) { \*x]xc/^
lowIndex = j; eK\1cs
} [HB>\
} YEoQIR
SortUtil.swap(data,i,lowIndex); xzg81sV7
} @U6Iw"@
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} 5V&3m@d0aq
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Shell排序: ANEW^\
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package org.rut.util.algorithm.support; !Q!==*1H
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import org.rut.util.algorithm.SortUtil; 4l+"J:,
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/** q/,>UtRr
* @author treeroot 53d8AJ_@X
* @since 2006-2-2 Qvh: hkR
* @version 1.0 5BCHWX*y
*/ 12;"=9e!
public class ShellSort implements SortUtil.Sort{ ^>02,X
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/* (non-Javadoc) !6:kJL}U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GU'/-6-T
*/ LutP&Ebt8
public void sort(int[] data) { "ewSh<t
for(int i=data.length/2;i>2;i/=2){ _p/
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for(int j=0;j insertSort(data,j,i); V|3}~(5=
} !6hUTjhW7z
} O,"4HZG
insertSort(data,0,1); ( /{Wu:e
} FU9q|!2Y
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/** >%k:++b{
* @param data _|`~CLE[
* @param j uh'{+E;=
* @param i ]NS{q85
*/ !E<y:$eH:
private void insertSort(int[] data, int start, int inc) { iB1"aE3
int temp; r9<OB`)3+
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 45e-A{G~
} n}(/>?/
} (055>D6
} S%zn {1F
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} Q[EpE,
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快速排序: zil^^wT0J
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package org.rut.util.algorithm.support; BH"f\oc
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import org.rut.util.algorithm.SortUtil; ZYr6Wn
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/** \^O&){q(9
* @author treeroot 1sgI,5liUs
* @since 2006-2-2 K
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* @version 1.0 U^iNOMs?
*/ rEEoR'c6
public class QuickSort implements SortUtil.Sort{ (D5 dN\
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/* (non-Javadoc) ha+)ZF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D?ojxHe
*/ z\wY3pIr2
public void sort(int[] data) { EM9K^l`
quickSort(data,0,data.length-1); KITC,@xE_O
} )Y.H*ca
private void quickSort(int[] data,int i,int j){ [w&B>z=g$
int pivotIndex=(i+j)/2; zvjp]yTx"
file://swap *Ii_dpJ
SortUtil.swap(data,pivotIndex,j); 8i:E$7e tH
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int k=partition(data,i-1,j,data[j]); %mKM9>lf#
SortUtil.swap(data,k,j); *HiN:30DZ
if((k-i)>1) quickSort(data,i,k-1); Z4 y9d?g%b
if((j-k)>1) quickSort(data,k+1,j); D@@J7
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} zf+jQ
/** 4#?Sxs
* @param data MYyV{W*T>
* @param i \\w<.\Yh
* @param j X@;;
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* @return oPP`)b$x
*/ G`1!SEae
private int partition(int[] data, int l, int r,int pivot) { 66ULR&D8
do{ ejs_ ?
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); w)}' {]P"c
SortUtil.swap(data,l,r); /G*]3=cSe
} >1luLp/,$
while(l SortUtil.swap(data,l,r); ;ED` 7
return l; JmlMfMpXMs
} ')eg6IC0&T
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} pjG/`
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改进后的快速排序: f_\,H|zco)
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package org.rut.util.algorithm.support; t5t!-w\M$+
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import org.rut.util.algorithm.SortUtil; T$w`=7
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/** \N3A2L)l
* @author treeroot \PU7,*2
* @since 2006-2-2 E~]37!,\\9
* @version 1.0 k5M3g*
*/ :c03"jvYE
public class ImprovedQuickSort implements SortUtil.Sort { (rTn6[*
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private static int MAX_STACK_SIZE=4096; ,u.G6"<
private static int THRESHOLD=10; vG X
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/* (non-Javadoc) M/?*?B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \3K%>
*/ *z?Vy<u G
public void sort(int[] data) { P|U9f6^3
int[] stack=new int[MAX_STACK_SIZE]; `IC2}IiF
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int top=-1; P]h-**O
int pivot; g/3t@7*<
int pivotIndex,l,r; <D}yqq@|
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stack[++top]=0; 4eD>DW
stack[++top]=data.length-1; QYB66g:
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while(top>0){ UO~Xzx!e
int j=stack[top--]; /9QC$Z):<
int i=stack[top--]; ,M?K3lG\g[
8%\0v?a5
pivotIndex=(i+j)/2; p)&Yr
pivot=data[pivotIndex]; U 7_1R0h
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SortUtil.swap(data,pivotIndex,j); H;DCkVL
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file://partition zEBUR%9
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r=j; lEXER^6
do{ Mp-hNO}.Z
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6B8gMO
SortUtil.swap(data,l,r); %+8"-u
} cPp<+ ts
while(l SortUtil.swap(data,l,r); z79c30y]"
SortUtil.swap(data,l,j); j3t,Cx
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if((l-i)>THRESHOLD){ YP4lizs.
stack[++top]=i; hBRcI0R
stack[++top]=l-1; IIh \d.o
} Fo.p}j+>
if((j-l)>THRESHOLD){ 'nQQqx%v
stack[++top]=l+1; lnQfpa8j
stack[++top]=j; l$:?82{
} qmy3pnL
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} gcI?)F
file://new InsertSort().sort(data); /:GeXDJw
insertSort(data); jt?DogYx
} v\ <4y P
/** O[<YYL0
* @param data
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*/ [sc4ULS &
private void insertSort(int[] data) { {kOTQG?y
int temp; 8M6wc394
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &P:2`\'
} :jHDeF.A
} 5fDp"-
} N~!
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} lHI?GiB@
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归并排序: n4A#T#D!t3
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package org.rut.util.algorithm.support; 9D`p2cO
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import org.rut.util.algorithm.SortUtil; ,t|qhJF
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/** HceZT e@
* @author treeroot
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* @since 2006-2-2 4?',E ddo
* @version 1.0 V2oXg
*/ Xaw&41K
public class MergeSort implements SortUtil.Sort{ d`sIgll&n
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/* (non-Javadoc) AAc*\K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XCyAt;neon
*/ f+V^q4
public void sort(int[] data) {
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int[] temp=new int[data.length]; LUKt!I0l
mergeSort(data,temp,0,data.length-1); L43]0k
}
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private void mergeSort(int[] data,int[] temp,int l,int r){ 8S#TOeQ
int mid=(l+r)/2; S%IhpTSe6
if(l==r) return ; VlFhfOR6t
mergeSort(data,temp,l,mid); 3R?6{.
mergeSort(data,temp,mid+1,r); p/ au.mc
for(int i=l;i<=r;i++){ r"$~Gg.%(
temp=data; kJNu2S
} c.{t +OR
int i1=l; j|w_BO 9
int i2=mid+1; L
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for(int cur=l;cur<=r;cur++){ \F8:6-
if(i1==mid+1) W8N__
data[cur]=temp[i2++]; :Oh*Q(>
else if(i2>r) (X/dP ~
data[cur]=temp[i1++]; 2*pNIc
else if(temp[i1] data[cur]=temp[i1++]; *}RV)0mif
else COFCa&m9c
data[cur]=temp[i2++]; r 3FUddF'
} B#, TdP]/
} ['_W<
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} JWVn@)s
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改进后的归并排序: `7
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package org.rut.util.algorithm.support; xz*MFoE
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import org.rut.util.algorithm.SortUtil; >p>B-m
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/** kn= fW1
* @author treeroot 2'-o'z<
* @since 2006-2-2 RN ~pC
* @version 1.0 4YyVh.x
*/ W0\
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public class ImprovedMergeSort implements SortUtil.Sort { I!u fw\[
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private static final int THRESHOLD = 10; ve*m\DU
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/* [;$9s=:[
* (non-Javadoc) ;t\C!A6
* KvNw'3Ua
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i'MpS
*/ V!zU4!@qP
public void sort(int[] data) { m/p:W/0L
int[] temp=new int[data.length]; 'M=V{.8U
mergeSort(data,temp,0,data.length-1); r%FfJM@!
} l5<&pb#b
qrkJ:
private void mergeSort(int[] data, int[] temp, int l, int r) { ~mk>9Gp
int i, j, k; ,Wlw#1fP
int mid = (l + r) / 2; 1+9}Xnxb
if (l == r) ,niQs+'<
return; S&{#sl#e
if ((mid - l) >= THRESHOLD) AI9#\$aGV
mergeSort(data, temp, l, mid); @%gth@8
else k[8{N
insertSort(data, l, mid - l + 1); C7_nA:Rc
if ((r - mid) > THRESHOLD) 8?G534*r@2
mergeSort(data, temp, mid + 1, r); 7"p%c`*;
else <>R\lPI2
insertSort(data, mid + 1, r - mid); pe>[Ts`2F
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for (i = l; i <= mid; i++) { )|`w;F>
temp = data; n1)~/
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} 0xzS9
for (j = 1; j <= r - mid; j++) { !w{(}n2Wq
temp[r - j + 1] = data[j + mid]; x]pZcx9
} lJ(];/%
int a = temp[l]; P|rreSv*
int b = temp[r]; *B%ulsm
for (i = l, j = r, k = l; k <= r; k++) { \PM5B"MDZ
if (a < b) { p&W{g$D>
data[k] = temp[i++]; f!13Ob<8r
a = temp; P*3PDa@
} else { f;]C8/ W
data[k] = temp[j--]; j)Y68fKK
b = temp[j]; ^wMZG'/
} g$^I/OK?
} U^d!*9R
} =m/BH^|&W
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/**
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* @param data hs?cV)hDS
* @param l ITf4PxF
* @param i Tw@:sWC
*/ s E0ldN"
private void insertSort(int[] data, int start, int len) { xAu&O\V
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Zz^!QlF
} `+ 5,=S
} b
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} 4nU+Wj?T
} Ht&%`\9s
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堆排序: %]fi;Z
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package org.rut.util.algorithm.support; !"s~dL,7
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import org.rut.util.algorithm.SortUtil; u8b^DB#+W
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/** c|(&6(r
* @author treeroot {7+y56[yu
* @since 2006-2-2 +~'ap'k m
* @version 1.0 o`~%}3
*/ O"m(C[+[
public class HeapSort implements SortUtil.Sort{ LNI]IITx/
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/* (non-Javadoc) xF7q9'/F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k_](u91
*/ Gp}}MGk
public void sort(int[] data) { z1m$8-4
MaxHeap h=new MaxHeap(); -"/l)1ox,
h.init(data); t+2,;G
for(int i=0;i h.remove(); 1LonYAHF
System.arraycopy(h.queue,1,data,0,data.length); iU "{8K,
} %-#rzeaW
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private static class MaxHeap{ $uCY\xqZ
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void init(int[] data){ F.@U
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this.queue=new int[data.length+1]; %617f=(E?!
for(int i=0;i queue[++size]=data; X$9
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fixUp(size); &ngG_y8}&
} M}qrF~
} d
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private int size=0; ILMXWw
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private int[] queue; faPgp
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public int get() { \4"01:u'
return queue[1]; mH5[(?
} 95b65f
SZL('x,"^
public void remove() { :2E?|}`7\
SortUtil.swap(queue,1,size--); /6nj
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fixDown(1); t{o&$s93
} G ,?l
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file://fixdown *k<{ nj@y
private void fixDown(int k) { 2; ~jKR[~
int j; (sL!nRw
while ((j = k << 1) <= size) { #*x8)6Ct
if (j < size %26amp;%26amp; queue[j] j++; jZP~!q
if (queue[k]>queue[j]) file://不用交换 [@`Ki
break; 7$|L%Sk
SortUtil.swap(queue,j,k); e2vLUlL8
k = j;
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} y3Lq"?h
} ];hK5
private void fixUp(int k) { g"|Z1iy|9
while (k > 1) { ,B||8W9
int j = k >> 1; m1,yf*U
if (queue[j]>queue[k]) T;Zv^:]0
break; )&wJ