Given a String of date of format YYYYMMDD, our task is to compute the life path number. Life Path Number is the number obtained by summation of individual digits of each element repeatedly till single digit, of datestring. Used in Numerology Predictions.
Examples:
Input : test_str = “19970314”
Output : 7
Explanation : 1 + 9 + 9 + 7 = 26 , 2 + 6 = 8 [ year ] ; 0 + 3 = 3 [ month ] ; 1 + 4 = 5 [ day ]. 5 + 3 + 8 = 16 ; 1 + 6 = 7.
Input : test_str = “19970104”
Output : 4
Explanation : 1 + 9 + 9 + 7 = 26 , 2 + 6 = 8 [ year ] ; 0 + 1 = 1 [ month ] ; 0 + 4 = 4 [ day ]. 4 + 1 + 8 = 13 ; 1 + 3 = 4.
Method 1: Using loop
The logic behind computing this is getting a summation of each digit and perform %10 at each step. This way result curlers to single digit if it goes to double-digit.
Python3
# Python3 code to demonstrate working of # Life Path Number # Using loop # initializing string test_str = "19970314" # printing original string print("The original string is : " + str(test_str)) res = 0for num in test_str: res += int(num) # modulation in case of 2 digit number if res > 9: res = res % 10 + res // 10 # printing result print("Life Path Number : " + str(res)) |
Output:
The original string is : 19970314 Life Path Number : 7
Method 2: Using recursion
Similar way as above, the difference being the recursive function is used for repeated modulation in case of digit count greater than 1.
Python3
# Python3 code to demonstrate working of # Life Path Number # Using recursion # initializing string test_str = "19970314" # printing original string print("The original string is : " + str(test_str)) # recursion function definition def lpn(num): return num if num < 10 else lpn(num // 10 + num % 10) # recursive function initial call res = lpn(int(test_str)) # printing result print("Life Path Number : " + str(res)) |
Output:
The original string is : 19970314 Life Path Number : 7
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