編程入門題目大全及答案1.編寫一個程序，輸出“Hello,World!”。答案：```pythonprint("Hello,World!")```2.計算并輸出1到100之間所有整數(shù)的和。答案：```pythontotal=sum(range(1,101))print(total)```3.編寫一個程序，接受用戶輸入的兩個數(shù)字，然后輸出它們的和。答案：```pythonnum1=float(input("Enterthefirstnumber:"))num2=float(input("Enterthesecondnumber:"))print("Thesumis",num1+num2)```4.創(chuàng)建一個程序，判斷一個給定的年份是否為閏年。答案：```pythonyear=int(input("Enterayear:"))if(year%4==0andyear%100!=0)or(year%400==0):print(year,"isaleapyear")else:print(year,"isnotaleapyear")```5.編寫一個程序，輸出9的乘法表。答案：```pythonforiinrange(1,10):forjinrange(1,10):print(f"{i}{j}={ij}",end="\t")print()```6.編寫一個程序，找出并輸出1到100之間所有的素數(shù)。答案：```pythondefis_prime(num):ifnum<=1:returnFalseforiinrange(2,int(num0.5)+1):ifnum%i==0:returnFalsereturnTrueprimes=[numfornuminrange(2,101)ifis_prime(num)]print(primes)```7.編寫一個程序，接受用戶輸入的字符串，并計算其中每個字符出現(xiàn)的次數(shù)。答案：```pythoninput_str=input("Enterastring:")char_count={}forcharininput_str:ifcharinchar_count:char_count[char]+=1else:char_count[char]=1print(char_count)```8.創(chuàng)建一個程序，接受用戶輸入的數(shù)字，然后輸出它的平方根。答案：```pythonimportmathnum=float(input("Enteranumber:"))print("Thesquarerootis",math.sqrt(num))```9.編寫一個程序，找出數(shù)組中的最大值和最小值。答案：```pythonnumbers=[34,56,12,89,3,23]max_num=max(numbers)min_num=min(numbers)print("Max:",max_num)print("Min:",min_num)```10.創(chuàng)建一個程序，接受用戶輸入的三個整數(shù)，并輸出其中的最大值。答案：```pythona=int(input("Enterfirstnumber:"))b=int(input("Entersecondnumber:"))c=int(input("Enterthirdnumber:"))ifa>=banda>=c:print("Thelargestnumberis",a)elifb>=aandb>=c:print("Thelargestnumberis",b)else:print("Thelargestnumberis",c)```11.編寫一個程序，接受用戶輸入的字符串，并反轉(zhuǎn)它。答案：```pythoninput_str=input("Enterastring:")reversed_str=input_str[::-1]print("Reversedstring:",reversed_str)```12.創(chuàng)建一個程序，接受用戶輸入的數(shù)字，并輸出它的階乘。答案：```pythonnum=int(input("Enteranumber:"))factorial=1foriinrange(1,num+1):factorial=iprint("Factorial:",factorial)```13.編寫一個程序，找出1000以內(nèi)所有能被7整除的數(shù)字。答案：```pythonforiinrange(1,1001):ifi%7==0:print(i)```14.創(chuàng)建一個程序，接受用戶輸入的數(shù)字，并判斷它是否在數(shù)組中。答案：```pythonnumbers=[12,34,45,67,89,23]num=int(input("Enteranumber:"))ifnuminnumbers:print("Numberisinthelist")else:print("Numberisnotinthelist")```15.編寫一個程序，接受用戶輸入的兩個字符串，并判斷它們是否相等。答案：```pythonstr1=input("Enterfirststring:")str2=input("Entersecondstring:")ifstr1==str2:print("Stringsareequal")else:print("Stringsarenotequal")```16.創(chuàng)建一個程序，找出數(shù)組中所有偶數(shù)的和。答案：```pythonnumbers=[1,2,3,4,5,6,7,8,9,10]even_sum=sum([numfornuminnumbersifnum%2==0])print("Sumofevennumbers:",even_sum)```17.編寫一個程序，接受用戶輸入的數(shù)字，并輸出它的二進制表示。答案：```pythonnum=int(input("Enteranumber:"))binary_str=bin(num)[2:]print("Binaryrepresentation:",binary_str)```18.創(chuàng)建一個程序，找出數(shù)組中所有奇數(shù)的和。答案：```pythonnumbers=[1,2,3,4,5,6,7,8,9,10]odd_sum=sum([numfornuminnumbersifnum%2!=0])print("Sumofoddnumbers:",odd_sum)```19.編寫一個程序，接受用戶輸入的字符串，并計算其中每個單詞出現(xiàn)的次數(shù)。答案：```pythoninput_str=input("Enterastring:")words=input_str.split()word_count={}forwordinwords:ifwordinword_count:word_count[word]+=1else:word_count[word]=1print(word_count)```20.創(chuàng)建一個程序，找出數(shù)組中所有數(shù)字的平均值。答案：```pythonnumbers=[1,2,3,4,5,6,7,8,9,10]average=sum(numbers)/len(numbers)print("Average:",average)```21.編寫一個程序，接受用戶輸入的數(shù)字，并輸出它的絕對值。答案：```pythonnum=int(input("Enteranumber:"))print("Absolutevalue:",abs(num))```22.創(chuàng)建一個程序，找出數(shù)組中所有數(shù)字的標(biāo)準(zhǔn)差。答案：```pythonimportmathnumbers=[1,2,3,4,5,6,7,8,9,10]mean=sum(numbers)/len(numbers)variance=sum((x-mean)2forxinnumbers)/len(numbers)std_deviation=math.sqrt(variance)print("Standarddeviation:",std_deviation)```23.編寫一個程序，接受用戶輸入的字符串，并輸出它的大寫形式。答案：```pythoninput_str=input("Enterastring:")upper_str=input_str.upper()print("Uppercasestring:",upper_str)```24.創(chuàng)建一個程序，找出數(shù)組中所有數(shù)字的中位數(shù)。答案：```pythonnumbers=[1,2,3,4,5,6,7,8,9,10]numbers.sort()mid=len(numbers)//2iflen(numbers)%2==0:median=(numbers[mid-1]+numbers[mid])/2else:median=numbers[mid]print("Median:",median)```25.編寫一個程序，接受用戶輸入的字符串，并輸出它的小寫形式。答案：```pythoninput_str=input("Enterastring:")lower_str=input_str.lower()print("Lowercasestring:",lower_str)```26.創(chuàng)建一個程序，找出數(shù)組中所有數(shù)字的眾數(shù)。答案：```pythonfromcollectionsimportCounternumbers=[1,2,2,3,3,3,4,4,4,4]counter=Counter(numbers)mode=counter.most_common(1)[0][0]print("Mode:",mode)```27.編寫一個程序，接受用戶輸入的數(shù)字，并輸出它的平方。答案：```pythonnum=int(input("Enteranumber:"))print("Square:",num2)```28.創(chuàng)建一個程序，找出數(shù)組中所有數(shù)字的最小公倍數(shù)（LCM）。答案：```pythondefgcd(a,b):whileb:a,b=b,a%bre