Hva er den kumulative summen?
Den kumulative summen betyr 'hvor mye så langt'. Definisjonen av den kumulative summen er summen av en gitt sekvens som øker eller blir større med flere tillegg. Det virkelige eksemplet på en kumulativ sum er den økende vannmengden i et svingbasseng.
java streng trim
Eksempel:
Input: 10, 15, 20, 25, 30 Output: 10, 25, 45, 70, 100 Input: 1, 2, 3, 4, 5 6, 7 ,8, 9, 10 Output: 1, 3, 6, 10, 15, 21, 28, 36, 45, 55
Program: 1
# Cumulative sum def Cumulative_sum(lists): cum_list = [] length = len(lists) cum_list = [sum(lists[0:x:1]) for x in range(0, length+1)] return cum_list[1:] lists = [10, 15, 20, 25, 30] print (Cumulative_sum(lists))
Produksjon:
10, 25, 45, 70, 100
Program: 2
list=[1, 2, 3, 4, 5, 6, 7, 8, 9, 10] cum_list=[] y = 0 for x in range(0,len(list)): y+=list[x] cum_list.append(y) print(cum_list)
Produksjon:
1, 3, 6, 10, 15, 21, 28, 36, 45, 55
Program 3: Brukerdefinert program
i = [] n = int(input('enter the no of elements in list:')) for x in range(0,n): element=int(input('enter the element' + str(x+1) + ':')) i.append(element) j=[sum(i[0:x+1]) for x in range(0,len(i))] print('Original list is: ',i) print('Cumulative sum list is: ',j)
Produksjon:
enter the no of elements in list: 10 enter the element1: 2 enter the element2: 3 enter the element3: 8 enter the element4: 6 enter the element5: 45 enter the element6: 32 enter the element7: 56 enter the element8: 32 enter the element9: 14 enter the element10: 25 Original list is: [2, 3, 8, 6, 45, 32, 56, 32, 14, 25] Cumulative sum list is: [2, 5, 13, 19, 64, 96, 152, 184, 198, 223]