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Create pivot_index_array.py
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arrays_and_strings/pivot_index_array.py
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arrays_and_strings/pivot_index_array.py
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# author: bt3gl
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def pivotIndex(nums):
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s = sum(nums)
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left_sum = 0
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for i, x in enumerate(nums):
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if left_sum == (s - left_sum - x):
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return i
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left_sum += x
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return -1
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