##Pyth, 6 bytes
Pyth, 6 bytes
x_+0Q0
Appends a 0, reverses and finds the index of the first 0
##Pyth, 6 bytes
*.*er8x_+0Q0
Uses same algorithm as jelly answerAppends a 0, reverses and finds the index of the first 0
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Visit Stack Exchange##Pyth, 6 bytes
x_+0Q0
Appends a 0, reverses and finds the index of the first 0
##Pyth, 6 bytes
*.*er8x_+0Q0
Uses same algorithm as jelly answerAppends a 0, reverses and finds the index of the first 0