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Python 2022-01-29 04:46:39
dictionary changed size during iteration
# to avoid this problem, make a copy of keys: for i in list(d) # Can also solve this problem here: # https://leetcode.com/problems/binary-trees-with-factors/ arr = [2,4,5,10] dp = collections.defaultdict(int) # this would create error since dp[x/i] is... Add solution -
Python 2022-01-28 07:42:16
iterate over list of strings python
# Iterate through a string using a for loop name="Nagendra" for letter in name: print(letter) # Iterate through a string using a for loop index = 0 while index<len(name): print(index) index += 1 #Iterate through a list of strings us... Add solution -
Java 2022-01-27 21:15:33
how to read from json files in java
package com.howtodoinjava.demo.jsonsimple; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import org.json.simple.JSONArray; import org.json.simple.JSONObject; import org.json.simple.parser.JSONPa... Add solution -
Java 2022-01-22 09:05:37
ArrayList remove(int index) method in java
import java.util.ArrayList; public class ArrayListRemoveIndexMethodExample { public static void main(String[] args) { ArrayList<Integer> al = new ArrayList<Integer>(5); al.add(56); al.add(29); al.add(76); al... Add solution -